*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Design tokens aligned with https://www.qwickton.com/ (production CSS) */
:root {
  --qk-bg-deep: #e2e8f0;
  --qk-bg-mid: #f1f5f9;
  --qk-surface: #ffffff;
  --qk-surface-elevated: #f8fafc;
  --qk-surface-tint: #eef2ff;
  --qk-border: #e2e8f0;
  --qk-border-strong: #cbd5e1;
  --qk-text: #0f172a;
  --qk-text-muted: #475569;
  --qk-text-soft: #64748b;
  --qk-accent: #3d5aed;
  --qk-accent-hover: #2d47d9;
  --qk-accent-bright: #5b73f5;
  --qk-accent-muted: rgba(61, 90, 237, 0.12);
  --qk-glow: rgba(91, 115, 245, 0.28);
  --qk-danger: #dc2626;
  --qk-success: #059669;
  --qk-input-bg: #ffffff;
  --qk-input-bg-soft: #f8fafc;
  --qk-overlay-scrim: rgba(15, 23, 42, 0.48);
  --qk-radius-sm: 12px;
  --qk-radius-md: 16px;
  --qk-radius-lg: 22px;
  --qk-font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --qk-font-heading: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --qk-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Consolas, "Liberation Mono", monospace;
  --qk-ai-violet: #7c3aed;
  --qk-ai-cyan: #0891b2;
  --qk-ai-glow-mix: rgba(124, 58, 237, 0.12);
  --qk-shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 24px rgba(15, 23, 42, 0.055);
  --qk-shadow-card-hover: 0 2px 8px rgba(15, 23, 42, 0.04), 0 12px 40px rgba(15, 23, 42, 0.09);
  --qk-header-blur: 20px;
  --qk-header-surface: rgba(255, 255, 255, 0.76);
  --qk-header-border: rgba(15, 23, 42, 0.07);
  --qk-header-shadow: 0 1px 0 rgba(255, 255, 255, 0.94) inset, 0 8px 40px rgba(15, 23, 42, 0.055),
    0 0 0 1px rgba(15, 23, 42, 0.035);
  --qk-nav-rail-bg: rgba(15, 23, 42, 0.035);
  --qk-nav-rail-border: rgba(15, 23, 42, 0.06);
  --qk-ease-premium: cubic-bezier(0.22, 1, 0.36, 1);
  /* <details> expand/collapse — grid-template-rows 0fr → 1fr */
  --qk-details-dur: 0.48s;
  --qk-details-ease: var(--qk-ease-premium);
  --qk-ring-focus: 0 0 0 3px rgba(61, 90, 237, 0.2);
  --sidebar-w: 276px;
}

/* Dark theme (set via html[data-theme="dark"] from JS) */
[data-theme="dark"] {
  color-scheme: dark;
  --qk-bg-deep: #0c1222;
  --qk-bg-mid: #0f172a;
  --qk-surface: #111c33;
  --qk-surface-elevated: #152238;
  --qk-surface-tint: #1a2440;
  --qk-border: #273554;
  --qk-border-strong: #3d4f72;
  --qk-text: #e8edf7;
  --qk-text-muted: #94a3b8;
  --qk-text-soft: #7c8aa0;
  --qk-accent: #7c8df5;
  --qk-accent-hover: #9aa9ff;
  --qk-accent-bright: #a5b4fc;
  --qk-accent-muted: rgba(99, 102, 241, 0.18);
  --qk-glow: rgba(129, 140, 248, 0.35);
  --qk-input-bg: #0f172a;
  --qk-input-bg-soft: #162032;
  --qk-overlay-scrim: rgba(2, 6, 23, 0.72);
  --qk-header-surface: rgba(15, 23, 42, 0.82);
  --qk-header-border: rgba(148, 163, 184, 0.12);
  --qk-header-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
  --qk-nav-rail-bg: rgba(15, 23, 42, 0.5);
  --qk-nav-rail-border: rgba(148, 163, 184, 0.1);
  --qk-shadow-card: 0 1px 2px rgba(0, 0, 0, 0.2), 0 8px 32px rgba(0, 0, 0, 0.35);
  --qk-shadow-card-hover: 0 4px 24px rgba(0, 0, 0, 0.35);
  --qk-ring-focus: 0 0 0 3px rgba(129, 140, 248, 0.35);
}

[data-theme="dark"] body {
  background-color: var(--qk-bg-mid);
  background-image:
    radial-gradient(ellipse 120% 90% at 100% -20%, rgba(99, 102, 241, 0.14), transparent 55%),
    radial-gradient(ellipse 80% 60% at -5% 40%, rgba(14, 165, 233, 0.08), transparent 50%),
    radial-gradient(ellipse 55% 40% at 50% 100%, rgba(124, 58, 237, 0.1), transparent 55%),
    linear-gradient(180deg, #0f172a 0%, var(--qk-bg-mid) 42%, var(--qk-bg-deep) 100%);
}

[data-theme="dark"] .sidebar {
  background: rgba(17, 28, 51, 0.92);
  border-right-color: var(--qk-border);
}

[data-theme="dark"] .menu-toggle {
  background: var(--qk-surface-elevated);
  border-color: var(--qk-border);
}

[data-theme="dark"] .offline-banner {
  background: linear-gradient(90deg, #7f1d1d, #b45309);
}

::selection {
  background: rgba(61, 90, 237, 0.18);
  color: var(--qk-text);
}

html {
  font-family: var(--qk-font);
  scroll-behavior: smooth;
  scroll-padding-top: calc(env(safe-area-inset-top, 0px) + 4.5rem);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overscroll-behavior-y: auto;
  overflow-x: clip;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: clip;
  color: var(--qk-text);
  line-height: 1.6;
  /* Same layered background as qwickton.com */
  background-color: var(--qk-bg-mid);
  background-image:
    radial-gradient(ellipse 120% 90% at 100% -20%, rgba(61, 90, 237, 0.09), transparent 55%),
    radial-gradient(ellipse 80% 60% at -5% 40%, rgba(14, 165, 233, 0.06), transparent 50%),
    radial-gradient(ellipse 55% 40% at 50% 100%, var(--qk-ai-glow-mix), transparent 55%),
    linear-gradient(180deg, #ffffff 0%, var(--qk-bg-mid) 42%, var(--qk-bg-deep) 100%);
  background-attachment: fixed;
  overscroll-behavior-y: auto;
}

/* Google AdSense (incl. Auto ads): no horizontal spill, predictable box model on mobile/tablet/desktop */
ins.adsbygoogle,
iframe[src*="googlesyndication.com"],
iframe[src*="doubleclick.net"],
iframe[id^="aswift_"],
iframe[name^="google_ads_iframe"] {
  max-width: 100% !important;
  box-sizing: border-box !important;
}

ins.adsbygoogle {
  display: block;
}

ins.adsbygoogle[data-ad-status="unfilled"] {
  display: none !important;
  min-height: 0 !important;
}

.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  z-index: 10050;
}

.skip-link:focus {
  position: fixed;
  top: max(0.65rem, env(safe-area-inset-top));
  left: max(0.65rem, env(safe-area-inset-left));
  width: auto;
  height: auto;
  margin: 0;
  padding: 0.5rem 0.95rem;
  overflow: visible;
  clip: auto;
  white-space: normal;
  border-radius: var(--qk-radius-sm);
  background: var(--qk-accent);
  color: #fff;
  text-decoration: none;
  font-weight: 650;
  font-size: 0.88rem;
  border: none;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.35), var(--qk-ring-focus);
  outline: none;
}

#main:focus {
  outline: none;
}

#main:focus-visible {
  box-shadow: 0 0 0 2px var(--qk-accent);
  border-radius: 4px;
}

/* Full-viewport decorative canvas (graph / nodes) — UI remains HTML above */
.fx-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.58;
}

[data-theme="dark"] .fx-bg:not(.fx-bg--off) {
  opacity: 0.42;
}

.fx-bg--off {
  display: none !important;
}

.noscript-msg {
  margin: 0;
  padding: 0.75rem 1.25rem;
  font-size: 0.9rem;
  line-height: 1.45;
  color: var(--qk-text);
  background: var(--qk-surface-tint);
  border-bottom: 1px solid var(--qk-border);
}

.img-studio-seo {
  margin: 0 0 0.85rem;
  max-width: 52rem;
  line-height: 1.55;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* —— Sidebar (nav rail, light) —— */
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  z-index: 40;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  padding: 1.1rem 0.65rem 0.75rem;
  overflow-x: hidden;
  transition: transform 0.3s var(--qk-ease-premium);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-right: 1px solid var(--qk-border);
  box-shadow: 4px 0 24px rgba(15, 23, 42, 0.04);
}

.sidebar .sidebar-nav {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-gutter: stable;
  padding-right: 0.15rem;
}

.sidebar-footer {
  margin-top: auto;
  padding: 0.55rem 0.15rem 0;
  border-top: 1px solid var(--qk-border);
}

.sidebar-footer__toolbar {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.4rem;
}

.sidebar-footer .theme-switcher {
  display: flex;
  flex: 1 1 auto;
  flex-wrap: nowrap;
  gap: 0.2rem;
  margin: 0;
  min-width: 0;
}

.theme-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
}

.theme-btn {
  flex: 1 1 auto;
  min-width: 4.5rem;
  padding: 0.38rem 0.55rem;
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--qk-font-heading);
  color: var(--qk-text-muted);
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  border-radius: 8px;
  cursor: pointer;
  transition:
    background 0.12s ease,
    color 0.12s ease,
    border-color 0.12s ease;
}

.sidebar-footer .theme-btn {
  min-width: 0;
  flex: 1 1 0;
  padding: 0.22rem 0.28rem;
  font-size: 0.68rem;
  border-radius: 6px;
}

.theme-btn:hover {
  color: var(--qk-text);
  border-color: rgba(61, 90, 237, 0.35);
}

.theme-btn.is-active {
  color: var(--qk-accent-hover);
  background: var(--qk-surface);
  border-color: rgba(61, 90, 237, 0.45);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

.fx-ui-sound {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  margin: 0.35rem 0 0.65rem;
  line-height: 1.45;
  color: var(--qk-text-soft);
  cursor: pointer;
}

.sidebar-footer .fx-ui-sound {
  flex: 0 0 auto;
  align-items: center;
  margin: 0;
  gap: 0.28rem;
  padding: 0.15rem 0.2rem;
  border-radius: 6px;
  line-height: 1.2;
  white-space: nowrap;
}

.sidebar-footer .fx-ui-sound__txt {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--qk-text-soft);
}

.fx-ui-sound input {
  margin-top: 0.18rem;
  flex-shrink: 0;
}

.sidebar-footer .fx-ui-sound input {
  margin: 0;
  width: 0.95rem;
  height: 0.95rem;
}

.fx-ui-sound:has(input:disabled) {
  opacity: 0.55;
  cursor: not-allowed;
}

.labs-meter {
  margin-top: 0.5rem;
  height: 8px;
  border-radius: 999px;
  background: var(--qk-border, #e0e4ef);
  overflow: hidden;
}

.labs-meter span {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  transition: width 0.2s ease, background 0.2s ease;
}

.labs-meter__fill--lo {
  background: linear-gradient(90deg, #dc2626, #f97316);
}

.labs-meter__fill--mid {
  background: linear-gradient(90deg, #eab308, #84cc16);
}

.labs-meter__fill--hi {
  background: linear-gradient(90deg, #22c55e, #14b8a6);
}

[data-theme="dark"] .labs-meter {
  background: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .theme-btn.is-active {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}

.theme-btn:focus-visible {
  outline: none;
  box-shadow: var(--qk-ring-focus);
}

.sidebar-footer__pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.3rem;
}

.sidebar-cmd-btn {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.45rem 0.65rem !important;
  font-size: 0.82rem !important;
}

.sidebar-shortcuts-btn {
  width: 100%;
  margin-top: 0.45rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.4rem 0.6rem !important;
  font-size: 0.8rem !important;
}

.sidebar-footer .sidebar-cmd-btn,
.sidebar-footer .sidebar-shortcuts-btn {
  margin-top: 0 !important;
  padding: 0.28rem 0.35rem !important;
  font-size: 0.72rem !important;
  gap: 0.25rem;
  line-height: 1.2;
}

.sidebar-footer .kbd-mini {
  font-size: 0.62rem;
  padding: 0.06rem 0.28rem;
}

.kbd-mini {
  font-family: var(--qk-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.12rem 0.35rem;
  border-radius: 6px;
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  color: var(--qk-text-soft);
}

/* Command palette — fixed overlay (not native <dialog>; reliable in WebViews / in-app browsers) */
body.cmd-palette-open {
  overflow: hidden;
}

.cmd-palette-layer {
  position: fixed;
  inset: 0;
  z-index: 10070;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(0.75rem, env(safe-area-inset-top, 0px)) 0.75rem max(1rem, env(safe-area-inset-bottom, 0px));
  box-sizing: border-box;
  pointer-events: none;
}

.cmd-palette-layer[hidden] {
  display: none !important;
}

.cmd-palette__backdrop {
  position: absolute;
  inset: 0;
  background: var(--qk-overlay-scrim);
  backdrop-filter: blur(4px);
  pointer-events: auto;
}

@keyframes qk-dialog-panel-in {
  from {
    opacity: 0;
    transform: translateY(-0.5rem) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.cmd-palette-layer:not([hidden]) .cmd-palette__panel {
  animation: qk-dialog-panel-in 0.4s var(--qk-details-ease) both;
  transform-origin: 50% 0;
}

.cmd-palette__panel {
  position: relative;
  z-index: 1;
  width: min(32rem, calc(100vw - 2rem));
  max-width: 100%;
  pointer-events: auto;
  background: var(--qk-surface);
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-md);
  box-shadow: var(--qk-shadow-card-hover), 0 0 0 1px rgba(61, 90, 237, 0.06) inset;
  padding: 0.85rem 1rem 0.75rem;
}

.cmd-palette__title {
  margin: 0 0 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--qk-text-soft);
}

.cmd-palette__input {
  margin-bottom: 0.5rem;
}

.cmd-palette__list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: min(70dvh, 32rem);
  overflow-y: auto;
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-sm);
  background: var(--qk-input-bg-soft);
}

.cmd-palette__section {
  list-style: none;
  padding: 0.4rem 0.75rem 0.2rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--qk-text-soft);
  border-bottom: 1px solid transparent;
}

.cmd-palette__empty {
  list-style: none;
  padding: 1rem 0.75rem;
  font-size: 0.86rem;
  color: var(--qk-text-muted);
}

.cmd-palette__hintrow {
  list-style: none;
  padding: 0.65rem 0.75rem 0.85rem;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--qk-text-soft);
  font-style: italic;
  border-top: 1px dashed var(--qk-border);
  background: var(--qk-surface-tint);
}

.cmd-palette__li {
  list-style: none;
  border-bottom: 1px solid var(--qk-border);
}

.cmd-palette__li:last-child {
  border-bottom: none;
}

.cmd-palette__row {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.cmd-palette__fav {
  flex-shrink: 0;
  width: 2.25rem;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  color: var(--qk-text-soft);
  transition: color 0.12s ease, background 0.12s ease;
}

.cmd-palette__fav:hover,
.cmd-palette__fav:focus-visible {
  color: var(--qk-accent);
  background: var(--qk-surface-tint);
  outline: none;
}

.cmd-palette__fav.is-on {
  color: #eab308;
}

.cmd-palette__item {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  text-align: left;
  padding: 0.55rem 0.75rem 0.55rem 0;
  font-size: 0.88rem;
  color: var(--qk-text);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background 0.1s ease;
}

.cmd-palette__item-glyph {
  flex-shrink: 0;
  width: 1.75rem;
  text-align: center;
  font-size: 1rem;
  line-height: 1.35;
  opacity: 0.92;
}

.cmd-palette__item-body {
  flex: 1;
  min-width: 0;
}

.cmd-palette__item:hover,
.cmd-palette__item.is-active {
  background: var(--qk-surface-tint);
}

.cmd-palette__item-title {
  font-weight: 600;
  display: block;
}

.cmd-palette__item-desc {
  display: block;
  font-size: 0.76rem;
  color: var(--qk-text-muted);
  margin-top: 0.15rem;
  line-height: 1.35;
}

.cmd-palette__hint {
  margin: 0.55rem 0 0;
  font-size: 0.72rem;
  color: var(--qk-text-soft);
}

.cmd-palette__hint kbd {
  font-family: var(--qk-mono);
  font-size: 0.68rem;
  padding: 0.1rem 0.28rem;
  border-radius: 4px;
  border: 1px solid var(--qk-border);
  background: var(--qk-input-bg-soft);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0 0.5rem 1.2rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--qk-border);
}

.sidebar-logo {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  flex-shrink: 0;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
    url("favicon.svg") center / 100% 100% no-repeat;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.35) inset,
    0 6px 20px var(--qk-glow);
}

.sidebar-title {
  font-family: var(--qk-font-heading);
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--qk-text);
}

.sidebar-sub {
  display: block;
  font-size: 0.75rem;
  color: var(--qk-text-soft);
  margin-top: 0.15rem;
  line-height: 1.35;
  max-width: 15rem;
}

.nav-label {
  display: block;
  font-size: 0.62rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--qk-text);
  padding: 0.95rem 0.6rem 0.35rem;
  opacity: 0.92;
}

.nav-label--strong {
  font-weight: 900;
  color: var(--qk-text);
}

.nav-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.5rem 0.72rem;
  margin-bottom: 2px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--qk-text-muted);
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  transition:
    background 0.18s ease,
    color 0.18s ease,
    box-shadow 0.18s ease,
    transform 0.1s ease;
}

.nav-item:hover {
  background: var(--qk-nav-rail-bg);
  color: var(--qk-text);
}

.nav-item.is-active {
  color: var(--qk-text);
  font-weight: 600;
  background: var(--qk-accent-muted);
  box-shadow: inset 3px 0 0 var(--qk-accent);
}

.nav-item:focus-visible {
  outline: none;
  box-shadow: var(--qk-ring-focus), inset 3px 0 0 var(--qk-accent);
}

.nav-item:active:not(.is-active) {
  transform: scale(0.99);
}

a.nav-item {
  text-decoration: none;
  box-sizing: border-box;
}

/* Static pages with site-chrome.js: wrapper is transparent in layout */
.qk-chrome-root {
  display: contents;
}

/* Match main app / legal-page backdrop when using site-chrome.js */
body.qk-chrome-page {
  margin: 0;
  min-height: 100dvh;
  color: var(--qk-text);
  background:
    radial-gradient(1200px 560px at 10% -10%, rgba(61, 90, 237, 0.15), transparent 70%),
    radial-gradient(980px 520px at 100% 0%, rgba(16, 185, 129, 0.1), transparent 72%),
    var(--qk-bg);
}

/* —— Mobile menu button (animated hamburger → close); fixed top-right, above drawer —— */
.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0;
  color: var(--qk-text);
  border: 1px solid var(--qk-border);
  border-radius: 14px;
  background: var(--qk-surface);
  cursor: pointer;
  box-shadow: var(--qk-shadow-card);
  align-items: center;
  justify-content: center;
  transition:
    background 0.2s var(--qk-ease-premium),
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.15s ease;
}

.menu-toggle:hover {
  border-color: rgba(61, 90, 237, 0.35);
  box-shadow: var(--qk-shadow-card-hover);
}

.menu-toggle:focus-visible {
  outline: none;
  box-shadow: var(--qk-ring-focus), var(--qk-shadow-card);
}

.menu-toggle:active {
  transform: scale(0.96);
}

.menu-toggle__bars {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 24px;
  height: 18px;
}

.menu-toggle-bar {
  display: block;
  width: 22px;
  height: 2.5px;
  background: var(--qk-text);
  border-radius: 2px;
  transition:
    transform 0.3s var(--qk-ease-premium),
    opacity 0.25s ease,
    background 0.2s ease;
  transform-origin: center;
}

.menu-toggle:hover .menu-toggle-bar {
  background: var(--qk-text-muted);
}

.menu-toggle[aria-expanded="true"] {
  border-color: rgba(61, 90, 237, 0.45);
  background: var(--qk-accent-muted);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar {
  background: var(--qk-accent-hover);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(1) {
  transform: translateY(8.5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(3) {
  transform: translateY(-8.5px) rotate(-45deg);
}

.mobile-bottom-bar {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  padding: 0.45rem max(0.65rem, env(safe-area-inset-left)) max(0.55rem, env(safe-area-inset-bottom))
    max(0.65rem, env(safe-area-inset-right));
  gap: 0.35rem;
  justify-content: space-between;
  align-items: stretch;
  background: color-mix(in oklab, var(--qk-header-surface) 92%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--qk-border);
  box-shadow: 0 -8px 28px rgba(15, 23, 42, 0.08);
}

.mobile-bottom-bar__btn {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.12rem;
  padding: 0.38rem 0.35rem;
  border: 1px solid var(--qk-border);
  border-radius: 12px;
  background: var(--qk-input-bg-soft);
  color: var(--qk-text);
  font-family: inherit;
  font-size: 0.65rem;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(61, 90, 237, 0.15);
  transition: border-color 0.15s ease, transform 0.12s ease;
}

.mobile-bottom-bar__btn:hover,
.mobile-bottom-bar__btn:focus-visible {
  border-color: rgba(61, 90, 237, 0.45);
  outline: none;
}

.mobile-bottom-bar__btn:active {
  transform: scale(0.98);
}

.mobile-bottom-bar__btn--primary {
  flex: 1.15;
  border-color: rgba(61, 90, 237, 0.35);
  background: linear-gradient(160deg, rgba(61, 90, 237, 0.14), rgba(61, 90, 237, 0.06));
}

.mobile-bottom-bar__icon {
  font-size: 1.05rem;
  line-height: 1;
  opacity: 0.92;
}

.mobile-bottom-bar__lbl {
  line-height: 1.15;
  white-space: nowrap;
}

.scroll-top-fab {
  display: none;
  position: fixed;
  right: max(0.65rem, env(safe-area-inset-right));
  bottom: calc(5rem + env(safe-area-inset-bottom, 0px));
  z-index: 52;
  width: 2.85rem;
  height: 2.85rem;
  padding: 0;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(61, 90, 237, 0.35);
  border-radius: 50%;
  background: linear-gradient(155deg, rgba(61, 90, 237, 0.95), rgba(43, 75, 232, 0.92));
  color: #fff;
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 8px 22px rgba(61, 90, 237, 0.28);
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(255, 255, 255, 0.2);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(10px);
  transition:
    opacity 0.22s var(--qk-ease-premium),
    visibility 0.22s var(--qk-ease-premium),
    transform 0.22s var(--qk-ease-premium);
}

.scroll-top-fab.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.scroll-top-fab:hover,
.scroll-top-fab:focus-visible {
  outline: none;
  filter: brightness(1.06);
}

.scroll-top-fab:active {
  transform: scale(0.96);
}

.scroll-top-fab.is-visible:active {
  transform: scale(0.96);
}

/* Overlay: fade in (replaces display:none for smooth transition) */
.sidebar-backdrop {
  position: fixed;
  inset: 0;
  z-index: 35;
  background: var(--qk-overlay-scrim);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.32s var(--qk-ease-premium),
    visibility 0.32s var(--qk-ease-premium);
}

body.nav-open {
  overflow: hidden;
  touch-action: none;
}

/* Sidebar is a fixed rail from 768px up; below that = drawer + hamburger */
@media (max-width: 767px) {
  .menu-toggle {
    display: flex;
    position: fixed;
    top: max(0.55rem, env(safe-area-inset-top));
    right: max(0.75rem, env(safe-area-inset-right));
    left: auto;
    /* Above ads, dialogs’ stacking, topbar — stay on the top paint layer */
    z-index: 2147483647;
    isolation: isolate;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    pointer-events: auto;
    touch-action: manipulation;
    -webkit-tap-highlight-color: rgba(61, 90, 237, 0.2);
  }

  .mobile-bottom-bar {
    display: flex;
    z-index: 50;
  }

  .sidebar-backdrop.is-open {
    z-index: 55;
  }

  .sidebar.is-open {
    z-index: 56;
  }

  body.nav-open .scroll-top-fab {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
  }

  .scroll-top-fab {
    display: flex;
  }

  .main-scroll {
    padding-bottom: max(0.75rem, env(safe-area-inset-bottom, 0px));
  }

  /* Pinned app footer clears the fixed mobile quick bar */
  .main-wrap > .foot--app {
    margin-bottom: calc(4.05rem + env(safe-area-inset-bottom, 0px));
  }

  .topbar {
    padding-right: calc(48px + 0.75rem + 0.5rem + env(safe-area-inset-right, 0px));
  }

  .topbar-inner {
    flex-wrap: nowrap;
    align-items: center;
    width: 100%;
    max-width: none;
    gap: 0.5rem 0.75rem;
  }

  .topbar-headings {
    flex: 1;
    min-width: 0;
    max-width: none;
  }

  .topbar .topbar-eyebrow {
    display: none;
  }

  .topbar .page-desc {
    display: none;
  }

  .topbar .page-guide {
    margin-top: 0.22rem;
    font-size: 0.72rem;
    line-height: 1.35;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .topbar .page-title {
    font-size: clamp(1.05rem, 4vw, 1.35rem);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  @media (max-width: 380px) {
    .topbar-wordmark {
      display: none;
    }
  }

  .sidebar {
    transform: translate3d(-105%, 0, 0);
    will-change: transform;
    box-shadow: 8px 0 40px rgba(15, 23, 42, 0.12);
    /* Drawer is visually off-canvas but can still steal taps on some mobile browsers — let hits pass through when closed. */
    pointer-events: none;
  }

  .sidebar.is-open {
    transform: translate3d(0, 0, 0);
    pointer-events: auto;
  }

  .sidebar-backdrop.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .main-wrap {
    margin-left: 0 !important;
    padding-top: env(safe-area-inset-top, 0px);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
    pointer-events: auto;
  }

  .main-scroll {
    pointer-events: auto;
  }
}

@media (min-width: 768px) {
  .sidebar {
    transform: translate3d(0, 0, 0);
    pointer-events: auto;
    will-change: auto;
  }

  .menu-toggle {
    display: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar,
  .sidebar-backdrop,
  .menu-toggle-bar {
    transition-duration: 0.01ms !important;
  }

  .view {
    animation-duration: 0.01ms !important;
  }

  .formula-io,
  .calc-seo-details,
  .calc-solve-details,
  .home-more {
    transition-duration: 0.01ms !important;
  }

  .formula-io__summary::after,
  .calc-seo-summary::after,
  .calc-solve-summary::after,
  .home-more summary::after {
    transition-duration: 0.01ms !important;
  }

  .cmd-palette__panel,
  .shortcuts-dialog__panel {
    animation-duration: 0.01ms !important;
  }

  .scroll-top-fab {
    transition-duration: 0.01ms !important;
  }

  .file-btn__face {
    transition-duration: 0.01ms !important;
  }
}

/* —— Main —— */
.main-wrap {
  position: relative;
  z-index: 1;
  margin-left: var(--sidebar-w);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.offline-banner {
  margin: 0;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  line-height: 1.4;
  text-align: center;
  color: #fff;
  background: linear-gradient(90deg, #9a3412, #c2410c);
  flex-shrink: 0;
}

.offline-banner[hidden] {
  display: none !important;
}

/* Scroll region: workspace only; site footer sits outside so About / Privacy stay visible */
.main-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: auto;
  overscroll-behavior-x: none;
  scrollbar-gutter: stable;
  padding-bottom: max(0.75rem, env(safe-area-inset-bottom));
}

/* Mobile scroll reliability (address bar + swipe/back-forward + momentum) */
@media (hover: none) and (pointer: coarse) {
  html {
    scroll-behavior: auto;
  }

  body {
    background-attachment: scroll;
  }

  .main-wrap {
    min-height: 100svh;
    min-height: 100dvh;
  }

  .main-scroll {
    overscroll-behavior-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  flex-shrink: 0;
  padding: clamp(0.55rem, 1.5vw, 1.1rem) clamp(1rem, 2vw, 2rem);
  padding-top: max(0.55rem, env(safe-area-inset-top));
  padding-left: max(1rem, env(safe-area-inset-left));
  padding-right: max(1rem, env(safe-area-inset-right));
  backdrop-filter: blur(var(--qk-header-blur));
  -webkit-backdrop-filter: blur(var(--qk-header-blur));
  background: var(--qk-header-surface);
  border-bottom: 1px solid var(--qk-header-border);
  box-shadow: var(--qk-header-shadow);
}

.topbar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(61, 90, 237, 0.45), rgba(8, 145, 178, 0.35), transparent);
  opacity: 0.85;
}

.topbar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 0.65rem 1.15rem;
  width: 100%;
  max-width: 56rem;
}

.topbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 0;
  padding: 0.15rem 0;
  margin: 0;
  text-decoration: none;
  color: var(--qk-text);
  border-radius: 12px;
  outline-offset: 3px;
  transition: opacity 0.15s ease, background 0.15s ease;
}

.topbar-brand:hover {
  opacity: 0.92;
}

.topbar-brand:focus-visible {
  outline: none;
  box-shadow: var(--qk-ring-focus);
}

.topbar-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  flex-shrink: 0;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.2) inset,
    0 4px 14px rgba(61, 90, 237, 0.25);
}

.topbar-wordmark {
  font-family: var(--qk-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--qk-text);
}

.topbar-headings {
  flex: 1;
  min-width: min(100%, 10rem);
}

.topbar-titleline {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
  margin-top: 0.2rem;
}

@media (min-width: 901px) {
  .topbar-inner {
    flex-wrap: nowrap;
    align-items: center;
  }

  .topbar-titleline {
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: baseline;
    gap: 0.5rem;
    margin-top: 0.1rem;
  }

  .topbar-headings {
    display: flex;
    flex-direction: column;
    min-width: 0;
  }

  .topbar-titleline .page-desc {
    margin: 0;
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .topbar-titleline .page-desc::before {
    content: "·";
    margin-right: 0.5rem;
    color: var(--qk-text-soft);
    font-weight: 600;
  }

  .topbar-titleline .page-title {
    margin: 0;
    flex-shrink: 0;
  }
}

.topbar-eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--qk-accent);
}

.page-title {
  margin: 0;
  font-family: var(--qk-font-heading);
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.2;
  color: var(--qk-text);
}

.page-desc {
  margin: 0.45rem 0 0;
  color: var(--qk-text-muted);
  font-size: 0.95rem;
  max-width: 42rem;
  line-height: 1.65;
}

.page-guide {
  margin: 0.28rem 0 0;
  color: var(--qk-text-soft);
  font-size: 0.78rem;
  max-width: 48rem;
  line-height: 1.45;
}

@media (max-width: 900px) {
  .page-desc {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
}

.content {
  flex: 1;
  padding: clamp(0.65rem, 1.5vw, 1.35rem) clamp(0.75rem, 2.2vw, 2rem);
  padding-bottom: max(1.25rem, env(safe-area-inset-bottom));
  max-width: 1120px;
}

.view:not(.is-visible) {
  display: none !important;
  animation: none;
}

.view.is-visible {
  display: block;
  animation: viewIn 0.22s var(--qk-ease-premium);
}

.view.is-visible.view--calc {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-height: 0;
}

/* Non-home routes: one optical “page” per tool (see body[data-tool] from showView) */
main.content > section.view[data-view]:not([data-view="home"]).is-visible {
  position: relative;
  isolation: isolate;
  width: 100%;
  max-width: 100%;
}

main.content > section.view[data-view]:not([data-view="home"]).is-visible > *:first-child {
  margin-top: 0;
}

body[data-tool]:not([data-tool="home"]) main.content {
  scroll-behavior: auto;
}

/* Keep tall text tools from forcing page scroll — inner scroll on textarea */
#view-text #text-in,
#view-diff .textarea,
#view-compress #gzip-in,
#view-compress #gzip-out {
  max-height: min(42dvh, 380px);
  min-height: 96px;
}

@keyframes viewIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* —— Home —— */
.hero {
  margin-bottom: 2rem;
}

.hero-panel {
  position: relative;
  padding: clamp(1.1rem, 2.5vw, 1.65rem) clamp(1rem, 2.5vw, 1.75rem);
  border-radius: var(--qk-radius-lg);
  border: 1px solid var(--qk-border);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.95) 0%, var(--qk-surface-elevated) 45%, rgba(238, 242, 255, 0.65) 100%);
  box-shadow: var(--qk-shadow-card), 0 0 0 1px rgba(255, 255, 255, 0.6) inset;
  overflow: hidden;
}

.hero-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--qk-radius-lg) var(--qk-radius-lg) 0 0;
  background: linear-gradient(90deg, var(--qk-accent), var(--qk-accent-bright), var(--qk-ai-cyan));
  opacity: 0.92;
}

[data-theme="dark"] .hero-panel {
  background: linear-gradient(165deg, rgba(17, 28, 51, 0.98) 0%, var(--qk-surface-elevated) 50%, rgba(26, 36, 64, 0.9) 100%);
  box-shadow: var(--qk-shadow-card);
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.trust-strip__item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--qk-text-muted);
}

.trust-strip__dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  flex-shrink: 0;
  background: linear-gradient(145deg, var(--qk-accent-bright), var(--qk-ai-cyan));
  box-shadow: 0 0 10px rgba(61, 90, 237, 0.35);
}

.hero-badge {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  margin-bottom: 0.85rem;
  font: inherit;
  font-family: inherit;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--qk-accent-hover);
  background: var(--qk-accent-muted);
  border: 1px solid rgba(61, 90, 237, 0.22);
  border-radius: 999px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
}

.hero-badge:focus-visible {
  outline: 2px solid var(--qk-accent);
  outline-offset: 3px;
}

.hero-quip {
  margin: -0.25rem 0 0.75rem;
  max-width: 42rem;
  font-size: 0.92rem;
  line-height: 1.5;
  font-style: italic;
  color: var(--qk-text-muted);
}

.hero-title {
  font-family: var(--qk-font-heading);
  font-size: clamp(1.4rem, 3vw, 1.95rem);
  font-weight: 700;
  margin: 0 0 0.55rem;
  letter-spacing: -0.035em;
  line-height: 1.2;
  color: var(--qk-text);
}

.hero-text {
  margin: 0;
  color: var(--qk-text-muted);
  max-width: 42rem;
  font-size: 1.02rem;
  line-height: 1.65;
}

.home-tip {
  margin: 1.1rem 0 0;
  max-width: 44rem;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--qk-text-soft);
}

.home-tip__badge {
  display: inline-block;
  margin-right: 0.45rem;
  padding: 0.12rem 0.45rem;
  border-radius: 6px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  color: var(--qk-text-muted);
  vertical-align: middle;
}

.home-tip .kbd-inline {
  font-family: var(--qk-mono);
  font-size: 0.72rem;
  padding: 0.1rem 0.32rem;
  border-radius: 5px;
  border: 1px solid var(--qk-border);
  background: var(--qk-input-bg-soft);
  color: var(--qk-text);
}

.home-capabilities {
  margin: 0.85rem 0 0.55rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.55rem;
}

.home-capability {
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-sm);
  background: var(--qk-input-bg-soft);
  padding: 0.58rem 0.64rem;
}

.home-capability strong {
  display: block;
  font-size: 0.86rem;
  color: var(--qk-text);
  font-family: var(--qk-font-heading);
  font-weight: 700;
}

.home-capability span {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.77rem;
  line-height: 1.4;
  color: var(--qk-text-muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 1rem;
}

.tool-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 1.2rem 1.25rem;
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-md);
  background: var(--qk-surface);
  box-shadow: var(--qk-shadow-card);
  color: inherit;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.2s var(--qk-ease-premium), transform 0.2s var(--qk-ease-premium),
    box-shadow 0.2s var(--qk-ease-premium);
}

.tool-card:hover {
  border-color: rgba(61, 90, 237, 0.35);
  transform: translateY(-3px);
  box-shadow: var(--qk-shadow-card-hover);
}

.tool-card:active {
  transform: translateY(-1px);
}

.tool-card:focus-visible {
  outline: none;
  border-color: var(--qk-accent);
  box-shadow: var(--qk-ring-focus), var(--qk-shadow-card-hover);
}

.tool-card-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  line-height: 1;
  border-radius: 12px;
  background: var(--qk-accent-muted);
  border: 1px solid rgba(61, 90, 237, 0.18);
  color: var(--qk-accent-hover);
}

.tool-card-title {
  font-family: var(--qk-font-heading);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.02em;
  color: var(--qk-text);
}

.tool-card-desc {
  font-size: 0.82rem;
  color: var(--qk-text-soft);
  line-height: 1.45;
}

/* —— Cards —— */
.card {
  background: var(--qk-surface);
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-md);
  padding: 1.3rem 1.4rem;
  margin-bottom: 1.2rem;
  box-shadow: var(--qk-shadow-card);
  transition:
    box-shadow 0.22s var(--qk-ease-premium),
    transform 0.22s var(--qk-ease-premium);
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .card:hover {
    box-shadow: var(--qk-shadow-card-hover);
    transform: translateY(-2px);
  }
}

@media (prefers-reduced-motion: reduce), (hover: none) {
  .card:hover {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card {
    transition: none;
  }
  .card:hover {
    transform: none;
  }
}

.card-title {
  margin: 0 0 0.85rem;
  font-family: var(--qk-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--qk-text);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
}

.md-split {
  align-items: start;
}

.md-preview-label {
  margin: 0 0 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--qk-text-muted);
}

.md-preview-pane {
  min-height: 12rem;
}

.md-preview {
  min-height: 12rem;
  max-height: 22rem;
  overflow: auto;
  padding: 1rem 1.1rem;
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-sm);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--qk-text);
}

.md-preview.markdown-body h1,
.md-preview.markdown-body h2,
.md-preview.markdown-body h3 {
  margin: 1.1em 0 0.45em;
  font-family: var(--qk-font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.md-preview.markdown-body h1 {
  font-size: 1.35rem;
  border-bottom: 1px solid var(--qk-border);
  padding-bottom: 0.35rem;
}

.md-preview.markdown-body h2 {
  font-size: 1.15rem;
}

.md-preview.markdown-body h3 {
  font-size: 1.02rem;
}

.md-preview.markdown-body p {
  margin: 0.65em 0;
}

.md-preview.markdown-body ul,
.md-preview.markdown-body ol {
  margin: 0.5em 0 0.5em 1.25rem;
  padding: 0;
}

.md-preview.markdown-body li {
  margin: 0.25em 0;
}

.md-preview.markdown-body code {
  font-family: var(--qk-mono);
  font-size: 0.86em;
  padding: 0.12em 0.35em;
  border-radius: 4px;
  background: var(--qk-input-bg);
  border: 1px solid var(--qk-border);
}

.md-preview.markdown-body pre {
  margin: 0.75em 0;
  padding: 0.75rem 0.9rem;
  overflow: auto;
  font-family: var(--qk-mono);
  font-size: 0.82rem;
  line-height: 1.45;
  background: var(--qk-input-bg);
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-sm);
}

.md-preview.markdown-body pre code {
  padding: 0;
  border: none;
  background: transparent;
  font-size: inherit;
}

.md-preview.markdown-body blockquote {
  margin: 0.75em 0;
  padding: 0.35em 0 0.35em 0.9rem;
  border-left: 3px solid var(--qk-accent);
  color: var(--qk-text-muted);
}

.md-preview.markdown-body a {
  color: var(--qk-accent);
}

.jwt-out-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 0.85rem;
}

.jwt-sig-wrap {
  grid-column: 1 / -1;
}

.jwt-out-label {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--qk-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.jwt-pre {
  margin-top: 0;
  max-height: 200px;
}

.jwt-pre--muted {
  opacity: 0.88;
  color: var(--qk-text-muted);
}

.hint {
  margin: 0 0 0.85rem;
  color: var(--qk-text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.fineprint {
  margin: 0.85rem 0 0;
  font-size: 0.78rem;
  color: var(--qk-text-soft);
  line-height: 1.45;
}

/* —— Form controls —— */
.textarea,
.input {
  width: 100%;
  padding: 0.62rem 0.88rem;
  border-radius: var(--qk-radius-sm);
  border: 1px solid var(--qk-border);
  background: var(--qk-input-bg);
  color: var(--qk-text);
  font-family: inherit;
  font-size: 0.92rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.textarea:hover,
.input:hover {
  border-color: var(--qk-border-strong);
}

.textarea:focus,
.input:focus {
  outline: none;
  border-color: rgba(61, 90, 237, 0.55);
  box-shadow: var(--qk-ring-focus);
}

.textarea.mono,
.input.mono {
  font-family: var(--qk-mono);
  font-size: 0.8rem;
  line-height: 1.45;
}

.textarea {
  resize: vertical;
  min-height: 100px;
}

.input.sm {
  width: auto;
  max-width: 130px;
}

.input-color {
  height: 48px;
  padding: 4px;
  cursor: pointer;
  border-radius: var(--qk-radius-sm);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.38rem;
  margin-bottom: 0.85rem;
}

.field span {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--qk-text-soft);
  letter-spacing: 0.02em;
}

.field.inline {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
}

.field.inline span {
  white-space: nowrap;
}

.row-input {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: flex-end;
}

.flex-1 {
  flex: 1;
  min-width: 0;
}

.btn-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.85rem;
}

.btn-toolbar.wrap {
  margin-top: 0;
  margin-bottom: 0.85rem;
}

.btn {
  padding: 0.5rem 1.05rem;
  border: none;
  border-radius: 10px;
  background: var(--qk-accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.875rem;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.15) inset, 0 4px 14px rgba(61, 90, 237, 0.3);
  transition: background 0.15s ease, transform 0.12s ease, box-shadow 0.15s ease;
}

.btn:hover:not(:disabled) {
  background: var(--qk-accent-hover);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.18) inset, 0 6px 20px rgba(61, 90, 237, 0.38);
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--qk-ring-focus), 0 4px 14px rgba(61, 90, 237, 0.25);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.btn.secondary {
  background: var(--qk-surface-elevated);
  color: var(--qk-text);
  border: 1px solid var(--qk-border);
  box-shadow: none;
}

.btn.secondary:hover:not(:disabled) {
  background: var(--qk-input-bg-soft);
  border-color: var(--qk-border-strong);
}

.btn.secondary:focus-visible {
  box-shadow: var(--qk-ring-focus);
}

/* File pickers: hidden input + styled face (no raw “No file chosen”) */
.file-btn {
  display: inline-flex;
  max-width: 100%;
  cursor: pointer;
  vertical-align: middle;
  -webkit-tap-highlight-color: transparent;
}

.file-btn--block {
  display: flex;
  width: 100%;
}

.file-btn__face {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  width: 100%;
  padding: 0.65rem 0.85rem;
  border-radius: 12px;
  border: 1px solid var(--qk-border);
  background: linear-gradient(155deg, var(--qk-surface-elevated) 0%, var(--qk-input-bg-soft) 100%);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.55) inset;
  color: var(--qk-text);
  transition:
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease,
    transform 0.12s ease;
}

[data-theme="dark"] .file-btn__face {
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
}

.file-btn:hover .file-btn__face {
  border-color: rgba(61, 90, 237, 0.42);
  background: linear-gradient(155deg, var(--qk-surface) 0%, var(--qk-input-bg-soft) 100%);
}

.file-btn:active .file-btn__face {
  transform: scale(0.992);
}

.file-btn input:focus-visible + .file-btn__face {
  outline: 2px solid var(--qk-accent);
  outline-offset: 2px;
}

.file-btn__icon {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 10px;
  background-color: color-mix(in oklab, var(--qk-accent) 11%, var(--qk-input-bg-soft));
  border: 1px solid rgba(61, 90, 237, 0.22);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 1.28rem;
}

.file-btn__icon--img {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233d5aed' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='18' height='18' rx='2' ry='2'/%3E%3Ccircle cx='8.5' cy='8.5' r='1.5'/%3E%3Cpath d='M21 15l-5-5L5 21'/%3E%3C/svg%3E");
}

.file-btn__icon--doc {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233d5aed' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z'/%3E%3Cpath d='M14 2v6h6M16 13H8M16 17H8M10 9H8'/%3E%3C/svg%3E");
}

.file-btn__icon--stack {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233d5aed' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 16V8a2 2 0 0 0-1-1.73l-7-4a2 2 0 0 0-2 0l-7 4A2 2 0 0 0 3 8v8a2 2 0 0 0 1 1.73l7 4a2 2 0 0 0 2 0l7-4A2 2 0 0 0 21 16z'/%3E%3Cpath d='M3.27 6.96L12 12.01l8.73-5.05M12 22.08V12'/%3E%3C/svg%3E");
}

[data-theme="dark"] .file-btn__icon--img,
[data-theme="dark"] .file-btn__icon--doc,
[data-theme="dark"] .file-btn__icon--stack {
  filter: brightness(1.25);
}

.file-btn__body {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
  flex: 1;
}

.file-btn__title {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-btn__hint {
  font-size: 0.72rem;
  line-height: 1.35;
  color: var(--qk-text-muted);
  font-weight: 500;
}

/* Compact row (toolbar / open next to buttons) */
.file-btn--compact {
  max-width: min(100%, 17rem);
}

.file-btn--compact .file-btn__face {
  padding: 0.48rem 0.65rem;
  gap: 0.55rem;
  border-radius: 10px;
}

.file-btn--compact .file-btn__icon {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 8px;
  background-size: 1.1rem;
}

.file-btn--compact .file-btn__title {
  font-size: 0.8125rem;
}

.file-btn--compact .file-btn__hint {
  font-size: 0.68rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Full-width drop zone (generators, vault modal) */
.file-btn--zone .file-btn__face {
  min-height: 4.35rem;
  padding: 1rem 1.1rem;
  border-style: dashed;
  border-width: 1.5px;
  border-color: rgba(61, 90, 237, 0.32);
  background: linear-gradient(
    160deg,
    color-mix(in oklab, var(--qk-input-bg-soft) 92%, var(--qk-accent) 5%),
    var(--qk-surface-elevated)
  );
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.45) inset;
}

.file-btn--zone:hover .file-btn__face {
  border-color: rgba(61, 90, 237, 0.48);
}

.file-btn--zone.file-btn--dropping .file-btn__face {
  border-color: rgba(61, 90, 237, 0.75);
  border-style: solid;
  box-shadow:
    0 0 0 3px rgba(61, 90, 237, 0.14),
    0 1px 0 rgba(255, 255, 255, 0.45) inset;
  background: linear-gradient(
    160deg,
    color-mix(in oklab, var(--qk-input-bg-soft) 85%, var(--qk-accent) 12%),
    var(--qk-surface)
  );
}

.vault-run-img__lead {
  margin: 0 0 0.65rem;
  line-height: 1.45;
}

.tool-modal__body .vault-run-img {
  margin-top: 0.15rem;
}

.stats {
  margin: 0.5rem 0;
  font-size: 0.88rem;
  color: var(--qk-text-muted);
}

.msg {
  margin: 0.55rem 0 0;
  font-size: 0.88rem;
  color: var(--qk-success);
}

.msg-error {
  color: var(--qk-danger);
}

/* Range */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 999px;
  background: var(--qk-border);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(180deg, #fff, #f1f5f9);
  border: 2px solid var(--qk-accent);
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.12);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--qk-accent);
  cursor: pointer;
}

select.input {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23475569'%3E%3Cpath d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.65rem center;
  padding-right: 2rem;
}

/* —— Image canvas (dark preview area like tool pages) —— */
.canvas-wrap {
  border: 1px solid var(--qk-border-strong);
  border-radius: var(--qk-radius-md);
  overflow: auto;
  background: #0f1419;
  margin: 0.85rem 0;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

.canvas-wrap canvas {
  display: block;
  max-width: 100%;
  height: auto;
  cursor: crosshair;
}

.canvas-wrap--draw canvas {
  cursor: crosshair;
  touch-action: none;
}

.slider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.85rem;
  margin: 0.85rem 0;
}

.slider-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.38rem;
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--qk-text-soft);
}

.slider-grid input[type="range"] {
  width: 100%;
}

.resize-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: flex-end;
  margin-top: 0.85rem;
}

/* —— Table —— */
.table-scroll {
  overflow: auto;
  max-height: 420px;
  margin-top: 1rem;
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-sm);
  background: var(--qk-input-bg);
  box-shadow: var(--qk-shadow-card);
}

.table-scroll table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  font-family: var(--qk-mono);
}

.table-scroll th,
.table-scroll td {
  border: 1px solid var(--qk-border);
  padding: 0.45rem 0.55rem;
  text-align: left;
}

.table-scroll th {
  background: var(--qk-surface-tint);
  position: sticky;
  top: 0;
  z-index: 1;
  font-weight: 600;
  color: var(--qk-text-muted);
}

.table-scroll tr:nth-child(even) {
  background: var(--qk-input-bg-soft);
}

/* —— Diff —— */
.diff-out {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-sm);
  font-family: var(--qk-mono);
  font-size: 0.76rem;
  line-height: 1.5;
  max-height: 360px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.diff-line-add {
  background: rgba(5, 150, 105, 0.12);
  color: #047857;
}

.diff-line-rem {
  background: rgba(220, 38, 38, 0.1);
  color: #b91c1c;
}

/* —— Color —— */
.color-swatch {
  min-height: 180px;
  border-radius: var(--qk-radius-md);
  border: 1px solid var(--qk-border);
  box-shadow: var(--qk-shadow-card);
}

.chk {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-right: 1rem;
  margin-bottom: 0.5rem;
  font-size: 0.87rem;
  cursor: pointer;
  color: var(--qk-text-muted);
}

.pre-out {
  margin-top: 0.85rem;
  padding: 1rem 1.1rem;
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-sm);
  font-family: var(--qk-mono);
  font-size: 0.76rem;
  line-height: 1.5;
  overflow: auto;
  max-height: 280px;
  white-space: pre-wrap;
}

.unit-result {
  font-family: var(--qk-font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--qk-accent);
  margin-top: 0.45rem;
}

.qr-box {
  margin-top: 1rem;
  padding: 1rem;
  display: inline-block;
  background: #fff;
  border-radius: var(--qk-radius-sm);
  border: 1px solid var(--qk-border);
  box-shadow: var(--qk-shadow-card);
}

.qr-box canvas {
  display: block;
}

.foot {
  flex-shrink: 0;
  padding: clamp(1.1rem, 2.2vw, 1.75rem) clamp(0.75rem, 2.2vw, 2rem) max(1.15rem, env(safe-area-inset-bottom));
  padding-left: max(0.75rem, env(safe-area-inset-left));
  padding-right: max(0.75rem, env(safe-area-inset-right));
  border-top: 1px solid var(--qk-border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.5) 0%, var(--qk-surface-elevated) 100%);
  color: var(--qk-text-soft);
  font-size: 0.82rem;
  line-height: 1.55;
}

[data-theme="dark"] .foot {
  background: linear-gradient(180deg, transparent 0%, rgba(15, 23, 42, 0.65) 100%);
}

.foot p {
  margin: 0;
  max-width: 720px;
}

.foot-lead {
  color: var(--qk-text-muted);
  font-size: 0.88rem;
}

.foot-lead strong {
  color: var(--qk-text);
  font-weight: 700;
}

.foot-note {
  margin-top: 0.55rem !important;
  font-size: 0.8rem;
  opacity: 0.95;
}

.foot-meta {
  margin-top: 0.65rem !important;
  font-size: 0.78rem;
  opacity: 0.92;
}

.foot-meta a {
  color: var(--qk-accent-hover);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 90, 237, 0.25);
}

.foot-meta a:hover {
  border-bottom-color: var(--qk-accent);
}

/* Main SPA: policy links row always in view (footer not inside .main-scroll) */
.foot--app .foot-meta--nav {
  text-align: center;
  max-width: none;
  font-size: 0.8rem;
  line-height: 1.65;
}

.foot--app .foot-lead,
.foot--app .foot-note {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  max-width: 44rem;
}

.foot--app .foot-meta:not(.foot-meta--nav) {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  max-width: 48rem;
}

@media (min-width: 768px) {
  .main-wrap > .foot--app {
    margin-bottom: 0;
  }
}

/* —— Standalone legal / info pages (about, privacy, cookies, terms) —— */
.legal-page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(1200px 560px at 10% -10%, rgba(61, 90, 237, 0.15), transparent 70%),
    radial-gradient(980px 520px at 100% 0%, rgba(16, 185, 129, 0.1), transparent 72%),
    var(--qk-bg);
  color: var(--qk-text);
}

.legal-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem 1rem;
  padding: max(0.75rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right))
    max(0.75rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
  border-bottom: 1px solid var(--qk-border);
  background: color-mix(in oklab, var(--qk-header-surface) 88%, transparent);
  backdrop-filter: blur(var(--qk-header-blur));
  -webkit-backdrop-filter: blur(var(--qk-header-blur));
  box-shadow: var(--qk-header-shadow);
}

.legal-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--qk-text);
  font-family: var(--qk-font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.legal-header__brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  vertical-align: middle;
}

/* Brand only — policy / hub links live in the footer (same as main app chrome) */
.legal-header--minimal {
  justify-content: flex-start;
}

.legal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.82rem;
}

.legal-nav a {
  color: var(--qk-text-muted);
  font-weight: 700;
  text-decoration: none;
  padding: 0.35rem 0.66rem;
  border-radius: 999px;
  border: 1px solid rgba(61, 90, 237, 0.16);
  background: color-mix(in oklab, var(--qk-surface-elevated) 82%, transparent);
}

.legal-nav a:hover {
  color: var(--qk-accent-hover);
  border-color: rgba(61, 90, 237, 0.36);
  transform: translateY(-1px);
}

.legal-nav a[aria-current="page"] {
  color: var(--qk-text);
  border-color: rgba(61, 90, 237, 0.48);
  background: color-mix(in oklab, var(--qk-surface-tint) 88%, white 12%);
}

.legal-main {
  flex: 1;
  width: 100%;
  max-width: 68rem;
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2rem) max(1rem, env(safe-area-inset-right)) max(2rem, env(safe-area-inset-bottom))
    max(1rem, env(safe-area-inset-left));
}

.legal-main article {
  max-width: 56rem;
  margin: 0 auto;
  border: 1px solid color-mix(in oklab, var(--qk-border) 82%, white 18%);
  border-radius: calc(var(--qk-radius-md) + 4px);
  padding: clamp(1rem, 2.2vw, 1.5rem) clamp(1rem, 2.4vw, 2rem);
  background:
    linear-gradient(170deg, color-mix(in oklab, var(--qk-surface-elevated) 92%, white 8%), var(--qk-surface-elevated));
  box-shadow: var(--qk-shadow-card);
}

.legal-main h1 {
  margin: 0 0 0.75rem;
  font-family: var(--qk-font-heading);
  font-size: clamp(1.55rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--qk-text);
}

.legal-main .legal-lead {
  margin: 0 0 1.5rem;
  font-size: 0.95rem;
  color: var(--qk-text-muted);
  line-height: 1.6;
}

.legal-main h2 {
  margin: 1.65rem 0 0.6rem;
  font-family: var(--qk-font-heading);
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--qk-text);
}

.legal-main p,
.legal-main li {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--qk-text-muted);
}

.legal-main ul {
  margin: 0.65rem 0 1rem;
  padding-left: 1.1rem;
}

.legal-main ol {
  margin: 0.65rem 0 1rem;
  padding-left: 1.2rem;
}

.legal-main a {
  color: var(--qk-accent-hover);
  font-weight: 600;
}

/* Prominent deep-link CTA for tool landing pages */
.legal-main a[href*="index.html?tool"],
.legal-main a[href*="index.html?mt"] {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  margin: 0.4rem 0;
  padding: 0.6rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(61, 90, 237, 0.28);
  background: linear-gradient(135deg, rgba(61, 90, 237, 0.16), rgba(61, 90, 237, 0.08));
  color: var(--qk-text);
  font-weight: 700;
  text-decoration: none;
  min-height: 44px;
  box-sizing: border-box;
  -webkit-tap-highlight-color: rgba(61, 90, 237, 0.15);
}

.legal-main a[href*="index.html?tool"]::before,
.legal-main a[href*="index.html?mt"]::before {
  content: "Open in Qwickton";
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  opacity: 0.82;
}

.legal-main a[href*="index.html?tool"]:hover,
.legal-main a[href*="index.html?mt"]:hover {
  transform: translateY(-1px);
  border-color: rgba(61, 90, 237, 0.55);
  box-shadow: 0 8px 20px rgba(61, 90, 237, 0.18);
}

.legal-main code {
  font-family: var(--qk-mono);
  font-size: 0.86em;
  padding: 0.12em 0.35em;
  border-radius: 4px;
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
}

.legal-main .legal-updated {
  font-size: 0.78rem;
  color: var(--qk-text-soft);
  margin-bottom: 1.25rem;
}

.legal-foot {
  margin-top: auto;
}

.legal-foot .foot-lead,
.legal-foot .foot-note {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  max-width: 42rem;
}

.legal-foot .foot-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem 0.55rem;
  text-align: center;
  max-width: 48rem;
  margin-left: auto !important;
  margin-right: auto !important;
}

/* Tool index visual upgrade */
.tool-index-grid {
  margin-top: 1rem;
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.tool-index-section {
  border: 1px solid color-mix(in oklab, var(--qk-border) 82%, white 18%);
  border-radius: var(--qk-radius-md);
  background: var(--qk-input-bg-soft);
  padding: 0.85rem 0.9rem;
}

.tool-index-section h2,
.tool-index-section h3 {
  margin: 0.2rem 0 0.35rem;
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--qk-accent);
}

.tool-index-section ul {
  margin-bottom: 0;
}

.tool-index-section a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.15rem 0;
  -webkit-tap-highlight-color: rgba(61, 90, 237, 0.12);
}

/* —— Calculator —— */
.calc-seo-title {
  margin: 0 0 0.65rem;
  font-family: var(--qk-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--qk-text);
}

.calc-seo-lead {
  margin: 0 0 1.1rem;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--qk-text-muted);
  max-width: 46rem;
}

.calc-seo-lead code {
  font-family: var(--qk-mono);
  font-size: 0.84rem;
  padding: 0.12rem 0.35rem;
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  border-radius: 6px;
}

/* Smooth expand/collapse: CSS grid rows 0fr → 1fr (summary + body) */
.formula-io,
.calc-seo-details,
.calc-solve-details,
.home-more {
  display: grid;
  grid-template-rows: auto 0fr;
  transition: grid-template-rows var(--qk-details-dur) var(--qk-details-ease);
}

.formula-io {
  transition:
    grid-template-rows var(--qk-details-dur) var(--qk-details-ease),
    box-shadow 0.28s var(--qk-details-ease);
}

.formula-io[open],
.calc-seo-details[open],
.calc-solve-details[open],
.home-more[open] {
  grid-template-rows: auto 1fr;
}

.formula-io > :not(summary),
.calc-seo-details > :not(summary),
.calc-solve-details > :not(summary),
.home-more > :not(summary) {
  min-height: 0;
  overflow: hidden;
}

.calc-seo-details {
  margin: 0 0 0.65rem;
  border-radius: var(--qk-radius-sm);
  border: 1px solid var(--qk-border);
  background: var(--qk-surface-tint);
  padding: 0.4rem 0.65rem 0.55rem;
}

.calc-seo-summary {
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--qk-accent-hover);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.calc-seo-summary::-webkit-details-marker {
  display: none;
}

.calc-seo-summary::after {
  content: "";
  flex: 0 0 auto;
  margin-left: auto;
  width: 0.42rem;
  height: 0.42rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  opacity: 0.65;
  transform: rotate(-45deg);
  transition: transform var(--qk-details-dur) var(--qk-details-ease);
}

.calc-seo-details[open] .calc-seo-summary::after {
  transform: rotate(45deg);
}

.calc-seo-details .calc-seo-lead {
  margin: 0.55rem 0 0;
  font-size: 0.82rem;
  line-height: 1.5;
}

.calc-inline-link {
  color: var(--qk-accent-hover);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 90, 237, 0.35);
}

.calc-inline-link:hover {
  border-bottom-color: var(--qk-accent);
}

.calc-input {
  font-size: 1.05rem !important;
  padding: 0.75rem 1rem !important;
}

.calc-result {
  margin-top: 1rem;
  min-height: 3.25rem;
  padding: 1rem 1.15rem;
  border-radius: var(--qk-radius-md);
  background: linear-gradient(135deg, var(--qk-surface-tint) 0%, var(--qk-surface-elevated) 100%);
  border: 1px solid var(--qk-border);
  font-family: var(--qk-font-heading);
  font-size: clamp(1.35rem, 4vw, 2.15rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--qk-text);
  line-height: 1.25;
}

.calc-solve-details {
  margin-top: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--qk-radius-sm);
  border: 1px solid var(--qk-border);
  background: var(--qk-surface);
}

.calc-solve-details[hidden] {
  display: none !important;
}

.calc-solve-summary {
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 650;
  color: var(--qk-accent-hover);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.calc-solve-summary::-webkit-details-marker {
  display: none;
}

.calc-solve-summary::after {
  content: "";
  flex: 0 0 auto;
  margin-left: auto;
  width: 0.42rem;
  height: 0.42rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  opacity: 0.7;
  transform: rotate(-45deg);
  transition: transform var(--qk-details-dur) var(--qk-details-ease);
}

.calc-solve-details[open] .calc-solve-summary::after {
  transform: rotate(45deg);
}

.calc-solve-steps {
  margin: 0.55rem 0 0;
  padding-left: 1.15rem;
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--qk-text-muted);
  font-family: var(--qk-mono);
}

.calc-solve-steps li {
  margin-bottom: 0.35rem;
}

.calc-solve-steps li:last-child {
  margin-bottom: 0;
}

.calc-eq {
  font-weight: 600;
  color: var(--qk-text-muted);
  font-size: 0.55em;
  vertical-align: middle;
}

.calc-eq-mark {
  color: var(--qk-text-soft);
  font-weight: 600;
  margin: 0 0.15em;
  font-size: 0.55em;
  vertical-align: middle;
}

.calc-ans {
  color: var(--qk-accent-hover);
  font-weight: 800;
}

.calc-err {
  margin-top: 0.65rem !important;
}

.calc-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--qk-border);
}

.calc-chips-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--qk-text-soft);
  margin-right: 0.25rem;
}

.chip {
  padding: 0.38rem 0.75rem;
  font-size: 0.82rem;
  font-family: var(--qk-mono);
  font-weight: 500;
  color: var(--qk-text-muted);
  background: var(--qk-surface-elevated);
  border: 1px solid var(--qk-border);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.chip:hover {
  border-color: rgba(61, 90, 237, 0.45);
  color: var(--qk-accent-hover);
  background: var(--qk-surface);
}

.chip:active {
  transform: scale(0.97);
}

.chip:focus-visible {
  outline: none;
  box-shadow: var(--qk-ring-focus);
}

/* —— Calculator layout (normal + advanced, history, formulas) —— */
.calc-page-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(200px, 280px);
  gap: clamp(0.5rem, 2vw, 1rem);
  align-items: start;
  margin-bottom: 0.65rem;
}

@media (max-width: 960px) {
  .calc-page-grid {
    grid-template-columns: 1fr;
  }

  .calc-side {
    position: static;
    max-height: min(40dvh, 16rem);
  }
}

.calc-main {
  margin-bottom: 0;
}

.calc-side {
  position: sticky;
  top: calc(0.75rem + env(safe-area-inset-top, 0px));
}

.calc-side-title {
  margin: 0 0 0.5rem;
  font-family: var(--qk-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--qk-text);
}

.calc-history-lead {
  margin: 0 0 0.85rem;
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--qk-text-muted);
}

.calc-history-sample {
  font-family: var(--qk-mono);
  font-size: 0.8rem;
  color: var(--qk-accent-hover);
  font-weight: 600;
}

.calc-history-list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  max-height: min(36dvh, 18rem);
  overflow-y: auto;
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-sm);
  background: var(--qk-input-bg-soft);
}

.calc-history-empty {
  padding: 0.85rem 1rem;
  font-size: 0.86rem;
  color: var(--qk-text-soft);
}

.calc-history-link {
  display: block;
  padding: 0.65rem 0.85rem;
  font-size: 0.8rem;
  font-family: var(--qk-mono);
  line-height: 1.45;
  color: var(--qk-text-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--qk-border);
  transition: background 0.12s ease, color 0.12s ease;
}

.calc-history-link:hover {
  background: var(--qk-surface);
  color: var(--qk-accent-hover);
}

.calc-history-list li:last-child .calc-history-link {
  border-bottom: none;
}

.calc-history-clear {
  width: 100%;
}

.calc-history-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
}

@media (max-width: 400px) {
  .calc-history-actions {
    grid-template-columns: 1fr;
  }
}

.calc-mode-row {
  display: inline-flex;
  gap: 0.35rem;
  padding: 0.2rem;
  margin-bottom: 0.85rem;
  border-radius: 999px;
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
}

.calc-mode-btn {
  padding: 0.45rem 1.1rem;
  font-family: var(--qk-font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--qk-text-muted);
  background: transparent;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.calc-mode-btn:hover {
  color: var(--qk-text);
}

.calc-mode-btn.is-active {
  background: var(--qk-surface);
  color: var(--qk-accent-hover);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
}

.calc-mode-btn:focus-visible {
  outline: none;
  box-shadow: var(--qk-ring-focus);
}

.calc-angle-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-bottom: 0.85rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--qk-radius-sm);
  background: var(--qk-surface-tint);
  border: 1px solid var(--qk-border);
}

.calc-angle-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--qk-text-soft);
}

.calc-radio {
  font-size: 0.86rem;
  color: var(--qk-text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.calc-actions {
  flex-wrap: wrap;
}

.calc-numpad-section {
  margin-top: 0.65rem;
}

.view--calc .calc-result {
  min-height: 2.5rem;
  padding: 0.65rem 0.85rem;
  margin-top: 0.65rem;
  font-size: clamp(1.1rem, 3.5vw, 1.75rem);
}

.view--calc .calc-seo-lead {
  margin-bottom: 0.65rem;
  font-size: 0.82rem;
  line-height: 1.45;
}

.view--calc .calc-input {
  padding: 0.55rem 0.75rem !important;
  font-size: 1rem !important;
}

.view--calc .calc-key {
  min-height: 2.35rem;
  font-size: 0.88rem;
}

.calc-numpad-label {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--qk-text-soft);
}

.calc-numpad {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.calc-numpad-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.4rem;
}

.calc-numpad--sci .calc-numpad-row {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.calc-key {
  min-height: 2.65rem;
  padding: 0.4rem 0.35rem;
  font-family: var(--qk-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--qk-text);
  background: var(--qk-surface-elevated);
  border: 1px solid var(--qk-border);
  border-radius: 10px;
  cursor: pointer;
  touch-action: manipulation;
  transition: border-color 0.12s ease, background 0.12s ease, transform 0.08s ease;
}

.calc-key:hover {
  border-color: rgba(61, 90, 237, 0.4);
  background: var(--qk-surface);
}

.calc-key:active {
  transform: scale(0.98);
}

.calc-key:focus-visible {
  outline: none;
  box-shadow: var(--qk-ring-focus);
}

.calc-key--muted {
  color: var(--qk-text-soft);
  font-size: 0.82rem;
}

.calc-key--sci {
  font-size: 0.8rem;
  padding: 0.35rem 0.25rem;
}

.calc-adv-panel {
  margin-top: 0.75rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--qk-border);
}

.calc-formulas-card {
  margin-top: 0;
}

.calc-formulas-title {
  margin: 0 0 0.5rem;
  font-family: var(--qk-font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--qk-text);
}

.calc-formulas-intro {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--qk-text-muted);
  max-width: 52rem;
}

.calc-formula-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: 0.65rem;
}

.calc-formula-block {
  padding: 0.75rem 0.85rem;
  border-radius: var(--qk-radius-md);
  background: var(--qk-surface-elevated);
  border: 1px solid var(--qk-border);
  min-width: 0;
}

.calc-formula-h {
  margin: 0 0 0.45rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--qk-text);
}

.formula-io-hint {
  margin: 0 0 0.45rem;
  font-size: 0.75rem;
  color: var(--qk-text-soft);
  line-height: 1.4;
}

.formula-smart-hint {
  margin: 0 0 0.55rem;
  font-size: 0.76rem;
  line-height: 1.45;
  color: var(--qk-text-muted);
}

.formula-io__fields--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 720px) {
  .formula-io__fields--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.formula-io {
  border: 1px solid var(--qk-border);
  border-radius: 10px;
  margin-bottom: 0.4rem;
  background: var(--qk-surface);
  overflow: hidden;
}

.formula-io:last-child {
  margin-bottom: 0;
}

.formula-io[open] {
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.formula-io__summary {
  cursor: pointer;
  padding: 0.45rem 0.55rem;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.65rem;
  font-size: 0.84rem;
  line-height: 1.35;
  user-select: none;
}

.formula-io__summary::after {
  content: "";
  margin-left: auto;
  align-self: center;
  width: 0.42rem;
  height: 0.42rem;
  border-right: 2px solid var(--qk-text-soft);
  border-bottom: 2px solid var(--qk-text-soft);
  flex-shrink: 0;
  transform: rotate(-45deg);
  transition: transform var(--qk-details-dur) var(--qk-details-ease);
}

.formula-io[open] .formula-io__summary::after {
  transform: rotate(45deg);
}

.formula-io__summary::-webkit-details-marker {
  display: none;
}

.formula-io__name {
  font-weight: 700;
  color: var(--qk-text);
}

.formula-io__eq {
  font-family: var(--qk-mono);
  color: var(--qk-text-muted);
  font-size: 0.76rem;
}

.formula-io__panel {
  padding: 0.45rem 0.55rem 0.6rem;
  border-top: 1px dashed var(--qk-border);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.formula-io__fields {
  display: grid;
  gap: 0.35rem;
}

.formula-io__fields--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.formula-io__fields--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 520px) {
  .formula-io__fields--3 {
    grid-template-columns: 1fr;
  }
}

.formula-field span {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--qk-text-soft);
  margin-bottom: 0.15rem;
}

.formula-field .input {
  width: 100%;
}

.formula-io__go {
  align-self: flex-start;
  padding: 0.4rem 0.85rem !important;
  font-size: 0.82rem !important;
}

.formula-io__out {
  display: block;
  margin: 0;
  font-family: var(--qk-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--qk-accent-hover);
  line-height: 1.45;
  min-height: 1.35em;
  word-break: break-word;
}

.tz-hint {
  margin: 0 0 0.5rem;
}

.tz-compare-out {
  display: block;
  margin-top: 0.65rem;
  white-space: pre-line;
  font-family: var(--qk-mono);
  font-size: 0.86rem;
  line-height: 1.55;
}

@media (max-width: 520px) {
  #view-calculator .content {
    padding-left: max(0.45rem, env(safe-area-inset-left));
    padding-right: max(0.45rem, env(safe-area-inset-right));
    padding-top: 0.5rem;
  }

  #view-calculator .card {
    padding: 0.65rem 0.72rem;
  }

  .calc-page-grid {
    gap: 0.45rem;
    margin-bottom: 0.45rem;
  }

  .calc-side {
    max-height: min(30dvh, 10.5rem);
  }

  .calc-seo-title {
    font-size: 0.98rem;
    margin-bottom: 0.35rem;
  }

  .calc-key {
    min-height: 2.12rem !important;
    font-size: 0.8rem !important;
    padding: 0.3rem 0.22rem !important;
  }

  .calc-numpad-row {
    gap: 0.28rem;
  }

  .calc-formula-grid {
    gap: 0.45rem;
  }

  .calc-formula-block {
    padding: 0.55rem 0.58rem;
  }

  .formula-io__summary {
    padding: 0.4rem 0.45rem;
    font-size: 0.8rem;
  }
}

/* Calculator: one-screen fit + no zoom-delay on real phones (keypad is primary) */
@media (max-width: 520px) and (hover: none) and (pointer: coarse) {
  body[data-tool="calculator"] main.content {
    padding-top: max(0.35rem, env(safe-area-inset-top));
    padding-bottom: max(0.45rem, env(safe-area-inset-bottom));
  }

  #view-calculator .content {
    padding-top: 0.35rem;
  }

  #view-calculator .card {
    padding: 0.52rem 0.62rem;
  }

  #view-calculator .calc-seo-title {
    font-size: 0.86rem;
    line-height: 1.28;
    margin: 0 0 0.32rem;
  }

  #view-calculator .calc-seo-details {
    margin-bottom: 0.35rem;
  }

  #view-calculator .calc-mode-row {
    margin-bottom: 0.35rem;
  }

  #view-calculator .calc-mode-btn {
    padding: 0.38rem 0.55rem;
    font-size: 0.82rem;
  }

  #view-calculator .field > span {
    font-size: 0.78rem;
  }

  .view--calc .calc-input {
    padding: 0.45rem 0.6rem !important;
    font-size: 0.92rem !important;
  }

  .view--calc .calc-result {
    margin-top: 0.42rem;
    padding: 0.42rem 0.52rem;
    min-height: 2rem;
    font-size: clamp(0.98rem, 4.5vw, 1.32rem);
  }

  #view-calculator .calc-actions {
    gap: 0.28rem;
    margin-top: 0.32rem;
  }

  #view-calculator .calc-actions .btn {
    font-size: 0.76rem;
    padding: 0.38rem 0.5rem;
  }

  #view-calculator .calc-numpad-section {
    margin-top: 0.45rem;
  }

  #view-calculator .calc-numpad-label {
    margin-bottom: 0.35rem;
    font-size: 0.68rem;
  }

  #view-calculator .calc-numpad {
    gap: 0.28rem;
  }

  #view-calculator .calc-key {
    min-height: 1.95rem !important;
    font-size: 0.76rem !important;
    padding: 0.26rem 0.18rem !important;
    border-radius: 8px;
  }

  #view-calculator .calc-numpad-row {
    gap: 0.24rem;
  }

  #view-calculator .calc-chips {
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 0.28rem;
    padding-bottom: 0.15rem;
    margin-top: 0.45rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  #view-calculator .calc-chips-label {
    flex-shrink: 0;
    font-size: 0.68rem;
  }

  #view-calculator .calc-chips .chip {
    flex-shrink: 0;
    font-size: 0.68rem;
    padding: 0.22rem 0.4rem;
  }

  #view-calculator .calc-side {
    max-height: min(22dvh, 7.5rem);
  }

  #view-calculator .calc-history-list {
    max-height: min(16dvh, 6rem);
  }

  #view-calculator .calc-history-lead {
    margin-bottom: 0.45rem;
    font-size: 0.78rem;
  }

  #view-calculator .calc-formulas-card {
    margin-top: 0.35rem;
  }
}

/* —— Math lab —— */
.mono-inline {
  font-family: var(--qk-mono);
  font-size: 0.88em;
  padding: 0.08em 0.28em;
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  border-radius: 6px;
}

.math-hub-intro {
  margin-bottom: 0;
}

.math-hub-title {
  margin: 0 0 0.35rem;
  font-family: var(--qk-font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--qk-text);
}

.math-hub-lead {
  margin: 0;
  max-width: 56rem;
}

.math-tabs-wrap {
  padding: 0.65rem 0.75rem 0.85rem;
  position: relative;
  z-index: 4;
  pointer-events: auto;
}

.math-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--qk-border);
  position: relative;
  z-index: 5;
  pointer-events: auto;
}

.math-tab {
  position: relative;
  z-index: 6;
  padding: 0.38rem 0.65rem;
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--qk-font-heading);
  color: var(--qk-text-muted);
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  border-radius: 999px;
  cursor: pointer;
  pointer-events: auto;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(61, 90, 237, 0.2);
  transition: background 0.12s ease, color 0.12s ease;
}

.math-tab:hover {
  color: var(--qk-text);
}

.math-tab.is-active {
  background: var(--qk-accent-muted);
  border-color: rgba(61, 90, 237, 0.35);
  color: var(--qk-accent-hover);
}

.math-tab:focus-visible {
  outline: none;
  box-shadow: var(--qk-ring-focus);
}

.math-panel {
  min-height: 0;
}

.math-panel[hidden] {
  display: none !important;
}

.math-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: 0.75rem;
}

.math-cell {
  padding: 0.55rem 0.6rem;
  border-radius: var(--qk-radius-sm);
  background: var(--qk-surface-elevated);
  border: 1px solid var(--qk-border);
  min-width: 0;
}

.math-cell--wide {
  grid-column: 1 / -1;
}

.math-cell-title {
  margin: 0 0 0.45rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--qk-text);
}

.math-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.35rem;
}

.math-row--wrap {
  align-items: flex-end;
}

.math-out {
  margin: 0.25rem 0 0;
  font-family: var(--qk-mono);
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--qk-accent-hover);
  font-weight: 600;
  word-break: break-word;
}

.matrix-2x2 {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.math-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--qk-text-soft);
  margin-bottom: 0.2rem;
}

.view.is-visible.view--math {
  display: flex !important;
  flex-direction: column;
  gap: 0.65rem;
}

.calc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.calc-table th,
.calc-table td {
  padding: 0.45rem 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--qk-border);
  vertical-align: top;
}

.calc-table th {
  font-weight: 600;
  color: var(--qk-text-soft);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.calc-table tbody tr:last-child th,
.calc-table tbody tr:last-child td {
  border-bottom: none;
}

.main-scroll::-webkit-scrollbar,
.sidebar::-webkit-scrollbar,
.table-scroll::-webkit-scrollbar,
.diff-out::-webkit-scrollbar,
.pre-out::-webkit-scrollbar,
.calc-history-list::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.main-scroll::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb,
.table-scroll::-webkit-scrollbar-thumb,
.diff-out::-webkit-scrollbar-thumb,
.pre-out::-webkit-scrollbar-thumb,
.calc-history-list::-webkit-scrollbar-thumb {
  background: var(--qk-border-strong);
  border-radius: 999px;
}

/* Toasts */
.toast-host {
  position: fixed;
  bottom: max(1rem, env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  pointer-events: none;
  max-width: min(90vw, 24rem);
}

.toast {
  padding: 0.55rem 1rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 999px;
  box-shadow: 0 8px 32px rgba(15, 23, 42, 0.35);
  opacity: 0;
  transform: translateY(12px) scale(0.98);
  transition:
    opacity 0.22s var(--qk-ease-premium),
    transform 0.22s var(--qk-ease-premium);
}

.toast--show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.toast--error {
  background: linear-gradient(135deg, #7f1d1d, #991b1b);
}

@media (prefers-reduced-motion: reduce) {
  .toast {
    transition-duration: 0.01ms;
  }
}

/* Shortcuts dialog */
.shortcuts-dialog {
  padding: 0;
  border: none;
  background: transparent;
  max-width: calc(100vw - 2rem);
  width: min(28rem, 100%);
}

.shortcuts-dialog::backdrop {
  background: var(--qk-overlay-scrim);
  backdrop-filter: blur(4px);
}

.shortcuts-dialog[open] .shortcuts-dialog__panel {
  animation: qk-dialog-panel-in 0.4s var(--qk-details-ease) both;
  transform-origin: 50% 0;
}

.shortcuts-dialog__panel {
  background: var(--qk-surface);
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-md);
  padding: 1.15rem 1.25rem 1rem;
  box-shadow: var(--qk-shadow-card-hover);
}

.shortcuts-dialog__title {
  margin: 0 0 0.85rem;
  font-family: var(--qk-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--qk-text);
}

.shortcuts-list {
  margin: 0;
  padding: 0;
}

.shortcuts-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.65rem 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--qk-border);
  font-size: 0.86rem;
  align-items: baseline;
}

.shortcuts-row:last-of-type {
  border-bottom: none;
}

.shortcuts-row dt {
  margin: 0;
  font-weight: 600;
  color: var(--qk-text-muted);
}

.shortcuts-row dd {
  margin: 0;
  text-align: right;
  color: var(--qk-text);
}

.shortcuts-row kbd {
  font-family: var(--qk-mono);
  font-size: 0.72rem;
  padding: 0.12rem 0.35rem;
  border-radius: 6px;
  border: 1px solid var(--qk-border);
  background: var(--qk-input-bg-soft);
}

.shortcuts-note {
  font-size: 0.75rem;
  color: var(--qk-text-soft);
}

.shortcuts-foot {
  margin: 0.85rem 0 1rem;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--qk-text-soft);
}

.shortcuts-dialog__close {
  width: 100%;
}

/* JSON status bar */
.json-bar,
.field-bar {
  margin: 0.35rem 0 0;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--qk-text-soft);
  font-family: var(--qk-mono);
}

.unit-actions {
  margin-top: 0.75rem;
}

/* Tool vault — arcade-style “hard” tiles + search */
.vault-layout {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Categories + chips in their own card (avoids clipping inside search hero on some browsers) */
.vault-cat-stack {
  position: relative;
  z-index: 2;
  overflow: visible;
}

#vault-micro-categories {
  scroll-margin-top: max(4.75rem, calc(env(safe-area-inset-top, 0px) + 3.25rem));
}

.vault-panel {
  border: 2px solid var(--qk-border-strong);
  background: linear-gradient(165deg, var(--qk-surface) 0%, var(--qk-surface-elevated) 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    0 3px 0 var(--qk-border-strong),
    0 8px 24px rgba(15, 23, 42, 0.06);
}

[data-theme="dark"] .vault-panel {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 3px 0 var(--qk-border-strong),
    0 10px 28px rgba(0, 0, 0, 0.35);
}

.vault-intro {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--qk-text-muted);
}

.vault-intro strong {
  color: var(--qk-accent);
  font-size: 1.15em;
}

.vault-toolbar {
  margin-bottom: 0.65rem;
}

.vault-search-wrap {
  display: flex;
  align-items: stretch;
  gap: 0;
  max-width: 38rem;
  border: 2px solid var(--qk-border-strong);
  border-radius: 12px;
  background: var(--qk-input-bg-soft);
  box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.06);
  overflow: hidden;
}

[data-theme="dark"] .vault-search-wrap {
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.35);
}

.vault-search-addon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  flex-shrink: 0;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--qk-accent);
  background: linear-gradient(180deg, var(--qk-surface-tint) 0%, var(--qk-input-bg-soft) 100%);
  border-right: 2px solid var(--qk-border);
  user-select: none;
}

.vault-search {
  flex: 1;
  min-width: 0;
  border: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  background: transparent;
}

.vault-search:focus {
  outline: none;
}

.vault-search-wrap:focus-within {
  border-color: var(--qk-accent);
  box-shadow:
    inset 0 2px 4px rgba(15, 23, 42, 0.06),
    0 0 0 3px var(--qk-accent-muted);
}

.vault-pixel-btn {
  font-family: inherit;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  border: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.vault-search-clear {
  width: 2.5rem;
  flex-shrink: 0;
  font-size: 1.15rem;
  color: var(--qk-text-muted);
  background: linear-gradient(180deg, var(--qk-surface-elevated) 0%, var(--qk-input-bg-soft) 100%);
  border-left: 2px solid var(--qk-border) !important;
  transition: color 0.12s ease, background 0.12s ease;
}

.vault-search-clear:hover,
.vault-search-clear:focus-visible {
  color: var(--qk-danger);
  background: var(--qk-surface-tint);
  outline: none;
}

.vault-search-clear:active {
  background: var(--qk-input-bg-soft);
}

.vault-result-meta {
  margin: 0.45rem 0 0;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--qk-text-soft);
  font-family: var(--qk-mono);
  letter-spacing: 0.02em;
}

.vault-cat-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin: 0 0 0.45rem;
}

.vault-cat-head__label {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--qk-accent);
}

.vault-cat-head__hint {
  font-size: 0.72rem;
  color: var(--qk-text-soft);
}

.vault-cat-meta {
  margin: 0 0 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--qk-text-muted);
  font-family: var(--qk-mono);
  letter-spacing: 0.02em;
  line-height: 1.4;
  min-height: 1.35rem;
}

.vault-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  z-index: 4;
  pointer-events: auto;
  min-height: 2.85rem;
  padding: 0.35rem 0.15rem 0.15rem;
  margin: 0 -0.15rem;
  border-radius: 12px;
  /* Solid fallbacks: some WebViews drop the whole rule if color-mix() is invalid */
  background: var(--qk-input-bg-soft);
  border: 1px dashed var(--qk-border-strong);
  color: var(--qk-text);
  scroll-margin-top: max(4.75rem, calc(env(safe-area-inset-top, 0px) + 3.25rem));
}

@supports (background: color-mix(in oklab, white 50%, black)) {
  .vault-chips {
    background: color-mix(in oklab, var(--qk-input-bg-soft) 88%, transparent);
    border: 1px dashed color-mix(in oklab, var(--qk-border-strong) 65%, transparent);
  }
}

@media (max-width: 720px) {
  .vault-chips {
    flex-wrap: nowrap;
    overflow-x: auto;
    /* overflow-y: hidden clipped chip labels in some WebViews; horizontal scroll only */
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity;
    gap: 0.42rem;
    padding: 0.45rem 0.35rem 0.55rem;
    margin: 0 -0.35rem 0 -0.25rem;
    scrollbar-width: thin;
  }

  .vault-chips .vault-chip {
    flex: 0 0 auto;
    scroll-snap-align: start;
  }
}

.vault-chip {
  position: relative;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 2px solid var(--qk-border-strong);
  background: linear-gradient(180deg, var(--qk-surface-elevated) 0%, var(--qk-input-bg-soft) 100%);
  color: var(--qk-text);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.38rem 0.7rem 0.4rem;
  border-radius: 10px;
  cursor: pointer;
  pointer-events: auto;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(61, 90, 237, 0.2);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.65),
    0 3px 0 var(--qk-border-strong);
  transition:
    border-color 0.12s ease,
    background 0.12s ease,
    transform 0.08s ease,
    box-shadow 0.08s ease;
}

[data-theme="dark"] .vault-chip {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 3px 0 var(--qk-border-strong);
}

.vault-chip__glyph {
  font-size: 1rem;
  line-height: 1;
  /* drop-shadow can make emoji/glyphs disappear on some GPU/WebView stacks */
}

.vault-chip__txt {
  white-space: nowrap;
}

.vault-chip:hover,
.vault-chip:focus-visible {
  border-color: var(--qk-accent);
  outline: none;
}

.vault-chip:focus-visible {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.65),
    0 3px 0 var(--qk-accent),
    var(--qk-ring-focus);
}

.vault-chip.is-active {
  background: linear-gradient(180deg, var(--qk-accent-muted) 0%, var(--qk-surface-tint) 100%);
  border-color: var(--qk-accent);
  color: var(--qk-accent);
  box-shadow:
    inset 0 2px 6px rgba(61, 90, 237, 0.12),
    0 2px 0 var(--qk-accent-hover);
}

@media (hover: hover) {
  .vault-chip:active {
    transform: translateY(2px);
    box-shadow:
      inset 0 2px 5px rgba(15, 23, 42, 0.12),
      0 1px 0 var(--qk-border-strong);
  }

  .vault-chip.is-active:active {
    box-shadow:
      inset 0 2px 8px rgba(61, 90, 237, 0.18),
      0 1px 0 var(--qk-accent);
  }
}

@media (prefers-reduced-motion: reduce) {
  .vault-chip {
    transition: none;
  }

  .vault-chip:active {
    transform: none;
  }
}

.vault-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.65rem;
  position: relative;
  z-index: 3;
  pointer-events: auto;
  scroll-margin-top: max(4.75rem, calc(env(safe-area-inset-top, 0px) + 3.25rem));
}

.vault-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 2rem 1rem;
  border: 2px dashed var(--qk-border);
  border-radius: var(--qk-radius-md);
  background: var(--qk-input-bg-soft);
}

.vault-empty__title {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--qk-text-soft);
}

.vault-empty__msg {
  margin: 0;
  font-size: 0.9rem;
  color: var(--qk-text-muted);
  line-height: 1.5;
}

.vault-more {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  padding: 0.25rem 0 0.75rem;
}

.vault-card {
  contain: layout style;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  text-align: left;
  padding: 0.85rem 1rem;
  border-radius: 14px;
  border: 2px solid var(--qk-border-strong);
  background: linear-gradient(165deg, var(--qk-surface) 0%, var(--qk-surface-elevated) 100%);
  cursor: pointer;
  font: inherit;
  color: inherit;
  pointer-events: auto;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(61, 90, 237, 0.15);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    0 3px 0 var(--qk-border);
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease,
    transform 0.1s ease;
}

[data-theme="dark"] .vault-card {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 3px 0 var(--qk-border);
}

@media (hover: hover) {
  .vault-card:hover {
    border-color: var(--qk-accent);
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.55),
      0 4px 0 var(--qk-accent);
    transform: translateY(-2px);
  }
}

.vault-card:active {
  transform: translateY(1px);
  box-shadow:
    inset 0 2px 6px rgba(15, 23, 42, 0.08),
    0 2px 0 var(--qk-border-strong);
}

@media (prefers-reduced-motion: reduce) {
  .vault-card:hover,
  .vault-card:active {
    transform: none;
  }
}

.vault-card__icon {
  font-size: 1.35rem;
  line-height: 1;
  margin-bottom: 0.15rem;
  filter: drop-shadow(0 1px 0 rgba(255, 255, 255, 0.4));
}

.vault-card__cat {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--qk-text-soft);
}

.vault-card__title {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--qk-text);
}

.vault-card__desc {
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--qk-text-muted);
}

.vault-detail__head {
  margin-bottom: 1rem;
}

.vault-detail__title {
  margin: 0.5rem 0 0.25rem;
  font-size: 1.25rem;
  font-family: var(--qk-font-heading);
}

.vault-detail__desc {
  margin: 0;
  color: var(--qk-text-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.vault-runner {
  margin-top: 0.5rem;
}

.vault-run-hint {
  margin: 0 0 0.75rem;
  color: var(--qk-text-muted);
  font-size: 0.88rem;
}

.vault-run-out {
  margin: 0.75rem 0 0;
  padding: 0.75rem 1rem;
  border-radius: var(--qk-radius-sm);
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  font-family: var(--qk-mono);
  font-size: 0.82rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.vault-run-unit .vault-u-val {
  max-width: 14rem;
}

.vault-run-text .field,
.vault-run-compute .field {
  margin-bottom: 0.65rem;
}

/* Cash tally — simple layout + banknote / coin visuals */
.vault-denom {
  margin-top: 0.25rem;
}

.vault-denom .denom-lead {
  margin: 0 0 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--qk-radius-md);
  background: var(--qk-surface-tint);
  border: 1px solid var(--qk-border);
}

.vault-denom .denom-lead__title {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 800;
  font-family: var(--qk-font-heading);
  color: var(--qk-text);
}

.vault-denom .denom-lead__sub {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--qk-text-muted);
}

.vault-denom .denom-sym-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 0.6rem 0.9rem;
  margin-bottom: 1.1rem;
}

.vault-denom .denom-sym-bar__label {
  flex: 1 1 100%;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--qk-text-soft);
}

.vault-denom .denom-sym-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.vault-denom .denom-sym-btn {
  min-width: 2.85rem;
  min-height: 2.75rem;
  font-weight: 800;
  font-size: 1.05rem;
  padding: 0.4rem 0.55rem;
  border-radius: 10px;
}

.vault-denom .denom-sym-btn.is-active {
  border-color: var(--qk-accent);
  background: var(--qk-accent-muted);
  color: var(--qk-accent);
}

.vault-denom .denom-custom-sym {
  flex: 1 1 14rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin: 0;
}

.vault-denom .denom-custom-sym__lbl {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--qk-text-soft);
}

.vault-denom .denom-custom-sym .input {
  max-width: 11rem;
  min-height: 2.75rem;
}

.vault-denom .denom-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 800px) {
  .vault-denom .denom-board {
    grid-template-columns: 1fr 1fr;
    gap: 1.15rem;
  }
}

.vault-denom .denom-panel {
  padding: 1rem 1rem 1.1rem;
  border-radius: var(--qk-radius-md);
  border: 1px solid var(--qk-border);
  background: var(--qk-surface);
}

.vault-denom .denom-panel--notes {
  background: linear-gradient(180deg, rgba(5, 150, 105, 0.06) 0%, var(--qk-surface) 48%);
}

.vault-denom .denom-panel--coins {
  background: linear-gradient(180deg, rgba(217, 119, 6, 0.07) 0%, var(--qk-surface) 48%);
}

.vault-denom .denom-panel__head {
  margin-bottom: 0.75rem;
}

.vault-denom .denom-panel__h {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  font-weight: 800;
  font-family: var(--qk-font-heading);
  color: var(--qk-text);
}

.vault-denom .denom-panel__tip {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--qk-text-soft);
}

.vault-denom .denom-panel__tip strong {
  color: var(--qk-text-muted);
  font-weight: 700;
}

.vault-denom .denom-stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
  min-height: 2rem;
}

.vault-denom .denom-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.65rem 0.75rem;
  padding: 0.65rem 0.7rem;
  border-radius: 14px;
  border: 1px solid var(--qk-border);
  background: var(--qk-input-bg-soft);
}

.vault-denom .denom-row--coin {
  background: linear-gradient(135deg, var(--qk-input-bg-soft) 0%, var(--qk-surface-elevated) 100%);
}

.vault-denom .denom-mini {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Banknote — paper grain, guilloche-like lines, security thread */
.vault-denom .denom-mini--bill {
  position: relative;
  width: 7.75rem;
  height: 3.2rem;
  border-radius: 5px;
  overflow: hidden;
  border: 1px solid rgba(100, 80, 50, 0.35);
  background-color: #f7f0dc;
  background-image:
    radial-gradient(ellipse 120% 90% at 78% 45%, rgba(255, 255, 255, 0.45), transparent 52%),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 2px,
      rgba(80, 60, 40, 0.04) 2px,
      rgba(80, 60, 40, 0.04) 3px
    ),
    repeating-linear-gradient(
      95deg,
      rgba(180, 160, 120, 0.07) 0px,
      rgba(180, 160, 120, 0.07) 1px,
      transparent 1px,
      transparent 4px
    ),
    linear-gradient(168deg, #fffdf7 0%, #f0e6d2 38%, #dcc9a8 72%, #c4a574 100%);
  box-shadow:
    inset 0 1px 2px rgba(255, 255, 255, 0.75),
    0 4px 10px rgba(15, 23, 42, 0.12);
}

[data-theme="dark"] .vault-denom .denom-mini--bill {
  border-color: rgba(251, 191, 36, 0.25);
  background-color: #2a1f0f;
  background-image:
    radial-gradient(ellipse 120% 90% at 78% 45%, rgba(255, 255, 255, 0.06), transparent 55%),
    repeating-linear-gradient(-12deg, transparent, transparent 2px, rgba(0, 0, 0, 0.12) 2px, rgba(0, 0, 0, 0.12) 3px),
    linear-gradient(168deg, #3d2e18 0%, #5c3d14 55%, #7a5418 100%);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.08), 0 4px 12px rgba(0, 0, 0, 0.35);
}

.vault-denom .denom-bill-thread {
  position: absolute;
  left: 24%;
  top: 9%;
  bottom: 9%;
  width: 10px;
  border-radius: 2px;
  background: linear-gradient(180deg, #c5d2e0 0%, #6b7c8f 42%, #9eb0c2 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
  opacity: 0.92;
  z-index: 1;
}

.vault-denom .denom-bill-fibre {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    90deg,
    transparent 0,
    transparent 5px,
    rgba(0, 0, 0, 0.025) 5px,
    rgba(0, 0, 0, 0.025) 6px
  );
  pointer-events: none;
  z-index: 0;
}

/* Coin — reeded edge + metallic body */
.vault-denom .denom-mini--coin {
  position: relative;
  width: 3.35rem;
  height: 3.35rem;
  border-radius: 50%;
  z-index: 0;
  background: transparent;
  box-shadow: 0 3px 10px rgba(15, 23, 42, 0.18);
}

.vault-denom .denom-mini--coin::before {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  z-index: 0;
  background: repeating-conic-gradient(
    from 0deg,
    #5c4a2e 0deg 4deg,
    #8b7344 4deg 8deg,
    #4a3b24 8deg 12deg
  );
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.2);
}

.vault-denom .denom-mini--coin::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  z-index: 1;
  background:
    radial-gradient(circle at 30% 25%, #fffef5 0%, #f0d060 22%, #c9941c 48%, #6b5420 88%, #2a2210 100%);
  box-shadow:
    inset 0 3px 6px rgba(255, 255, 255, 0.55),
    inset 0 -5px 12px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .vault-denom .denom-mini--coin::after {
  background: radial-gradient(circle at 30% 25%, #78716c 0%, #57534e 35%, #44403c 70%, #1c1917 100%);
  box-shadow: inset 0 2px 5px rgba(255, 255, 255, 0.12), inset 0 -4px 10px rgba(0, 0, 0, 0.5);
}

.vault-denom .denom-mini__inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 0 0.2rem;
}

.vault-denom .denom-mini--coin .denom-mini__inner {
  border-radius: 50%;
}

.vault-denom .denom-mini__val {
  font-family: Georgia, "Times New Roman", serif;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 0.8rem;
  line-height: 1.05;
  text-align: center;
  letter-spacing: 0.02em;
  color: #3d2914;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.45);
}

.vault-denom .denom-mini--coin .denom-mini__val {
  font-family: var(--qk-mono);
  font-size: 0.72rem;
  color: #2a2210;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.35);
}

[data-theme="dark"] .vault-denom .denom-mini--bill .denom-mini__val {
  color: #fde68a;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .vault-denom .denom-mini--coin .denom-mini__val {
  color: #f5f5f4;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.75);
}

.vault-denom .denom-fields {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-width: 0;
}

.vault-denom .denom-field {
  margin: 0;
}

.vault-denom .denom-field__lbl {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--qk-text-muted);
  margin-bottom: 0.2rem;
}

.vault-denom .denom-field .input {
  width: 100%;
  min-height: 2.85rem;
  font-size: 1rem;
}

.vault-denom .denom-rm {
  align-self: start;
  min-width: 2.6rem;
  min-height: 2.6rem;
  padding: 0;
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1;
  border-radius: 10px;
}

.vault-denom .denom-add {
  width: 100%;
  min-height: 2.65rem;
  font-weight: 700;
  border-radius: 10px;
}

.vault-denom .denom-scoreboard {
  margin: 1.1rem 0 0.65rem;
  padding: 1rem 1.15rem;
  border-radius: 14px;
  border: 1px solid var(--qk-border-strong);
  background: var(--qk-surface-elevated);
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
}

[data-theme="dark"] .vault-denom .denom-scoreboard {
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

.vault-denom .denom-score {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.35rem 0.75rem;
  padding: 0.4rem 0;
  font-size: 0.9rem;
  color: var(--qk-text-muted);
  border-bottom: 1px solid var(--qk-border);
}

.vault-denom .denom-score:last-of-type {
  border-bottom: none;
}

.vault-denom .denom-score--grand {
  margin-top: 0.25rem;
  padding-top: 0.75rem;
  border-top: 2px solid var(--qk-border-strong);
  border-bottom: none;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--qk-text);
}

.vault-denom .denom-score__k {
  font-weight: 700;
}

.vault-denom .denom-score__v,
.vault-denom .denom-score__grand {
  font-family: var(--qk-mono);
  font-weight: 700;
  color: var(--qk-accent);
}

.vault-denom .denom-actions {
  margin-top: 0.45rem;
  gap: 0.5rem;
}

@media (prefers-reduced-motion: reduce) {
  .vault-denom .denom-mini--bill,
  .vault-denom .denom-mini--coin {
    box-shadow: none;
  }
}

/* Coin toss — modes, procedural-audio note in UI */
.vault-cointoss {
  margin-top: 0.25rem;
}

.vault-cointoss .cointoss-hero {
  margin-bottom: 1rem;
}

.vault-cointoss .cointoss-lead {
  margin: 0 0 0.85rem;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--qk-text-muted);
}

.vault-cointoss .cointoss-modes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.vault-cointoss .cointoss-mode {
  flex: 1 1 auto;
  min-width: 5.5rem;
  min-height: 2.65rem;
  padding: 0.4rem 0.65rem;
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: 10px;
  border: 2px solid var(--qk-border-strong);
  background: var(--qk-input-bg-soft);
  color: var(--qk-text-muted);
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease, color 0.12s ease;
}

.vault-cointoss .cointoss-mode.is-active {
  border-color: var(--qk-accent);
  background: var(--qk-accent-muted);
  color: var(--qk-accent);
}

.vault-cointoss .cointoss-mode[data-mode="ht"].is-active {
  border-color: #059669;
  background: rgba(5, 150, 105, 0.14);
  color: #047857;
}

.vault-cointoss .cointoss-mode[data-mode="yn"].is-active {
  border-color: #2563eb;
  background: rgba(37, 99, 235, 0.12);
  color: #1d4ed8;
}

.vault-cointoss .cointoss-mode[data-mode="ab"].is-active {
  border-color: #9333ea;
  background: rgba(147, 51, 234, 0.12);
  color: #7e22ce;
}

[data-theme="dark"] .vault-cointoss .cointoss-mode[data-mode="ht"].is-active {
  border-color: #34d399;
  background: rgba(52, 211, 153, 0.12);
  color: #6ee7b7;
}

[data-theme="dark"] .vault-cointoss .cointoss-mode[data-mode="yn"].is-active {
  border-color: #60a5fa;
  background: rgba(96, 165, 250, 0.12);
  color: #93c5fd;
}

[data-theme="dark"] .vault-cointoss .cointoss-mode[data-mode="ab"].is-active {
  border-color: #c084fc;
  background: rgba(192, 132, 252, 0.12);
  color: #d8b4fe;
}

.vault-cointoss .cointoss-mode:focus-visible {
  outline: none;
  box-shadow: var(--qk-ring-focus);
}

.vault-cointoss .cointoss-stage {
  display: flex;
  justify-content: center;
  margin: 1rem 0 1.35rem;
  perspective: 880px;
}

.vault-cointoss .cointoss-coin-wrap {
  position: relative;
  filter: drop-shadow(0 12px 28px rgba(15, 23, 42, 0.14));
}

[data-theme="dark"] .vault-cointoss .cointoss-coin-wrap {
  filter: drop-shadow(0 14px 32px rgba(0, 0, 0, 0.45));
}

/* Silver token — distinct from the old gold coin */
.vault-cointoss .cointoss-coin {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  width: min(13.5rem, 90vw);
  aspect-ratio: 1;
  border-radius: 50%;
  cursor: default;
  user-select: none;
  position: relative;
  transform-style: preserve-3d;
  background:
    radial-gradient(ellipse 130% 85% at 50% 6%, rgba(255, 255, 255, 0.95) 0%, transparent 42%),
    radial-gradient(circle at 50% 50%, #f8fafc 0%, #e2e8f0 26%, #94a3b8 58%, #475569 88%, #1e293b 100%);
  border: 3px solid rgba(51, 65, 85, 0.55);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.45),
    inset 0 7px 20px rgba(255, 255, 255, 0.5),
    inset 0 -14px 26px rgba(15, 23, 42, 0.3),
    0 5px 0 rgba(15, 23, 42, 0.16);
  transition: filter 0.15s ease, box-shadow 0.15s ease;
}

.vault-cointoss .cointoss-coin::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  z-index: 0;
  background: repeating-conic-gradient(
    from 0deg,
    #64748b 0deg 3.5deg,
    #cbd5e1 3.5deg 7deg,
    #475569 7deg 10.5deg
  );
  box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.25);
}

.vault-cointoss .cointoss-coin::after {
  content: "";
  position: absolute;
  inset: 11%;
  border-radius: 50%;
  z-index: 1;
  pointer-events: none;
  box-shadow:
    inset 0 0 0 1px rgba(15, 23, 42, 0.14),
    inset 0 3px 10px rgba(15, 23, 42, 0.12),
    0 0 0 1px rgba(255, 255, 255, 0.38);
}

.vault-cointoss .cointoss-coin > * {
  position: relative;
  z-index: 2;
}

[data-theme="dark"] .vault-cointoss .cointoss-coin {
  background:
    radial-gradient(ellipse 130% 85% at 50% 6%, rgba(148, 163, 184, 0.4) 0%, transparent 42%),
    radial-gradient(circle at 50% 50%, #57534e 0%, #44403c 32%, #292524 70%, #0c0a09 100%);
  border-color: rgba(148, 163, 184, 0.4);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.1),
    inset 0 5px 14px rgba(255, 255, 255, 0.07),
    inset 0 -12px 22px rgba(0, 0, 0, 0.55),
    0 4px 0 rgba(0, 0, 0, 0.42);
}

[data-theme="dark"] .vault-cointoss .cointoss-coin::before {
  background: repeating-conic-gradient(
    from 0deg,
    #292524 0deg 3.5deg,
    #78716c 3.5deg 7deg,
    #44403c 7deg 10.5deg
  );
}

[data-theme="dark"] .vault-cointoss .cointoss-coin::after {
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    inset 0 3px 10px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(0, 0, 0, 0.25);
}

/* Softer rim / field when a result is showing so the colored face reads */
.vault-cointoss .cointoss-coin.is-heads::before,
.vault-cointoss .cointoss-coin.is-tails::before {
  opacity: 0.42;
}

.vault-cointoss .cointoss-coin.is-heads::after,
.vault-cointoss .cointoss-coin.is-tails::after {
  opacity: 0.5;
}

.vault-cointoss .cointoss-coin.is-flipping {
  animation: cointossSpin 0.28s ease-in-out;
  filter: brightness(1.12) saturate(1.05);
}

/* H/T — gold coin, green vs blue outcomes */
.vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-heads {
  background: radial-gradient(circle at 32% 26%, #ecfdf5 0%, #6ee7b7 32%, #10b981 58%, #047857 88%, #022c22 100%);
  box-shadow:
    inset 0 5px 14px rgba(255, 255, 255, 0.52),
    inset 0 -8px 18px rgba(0, 0, 0, 0.22),
    0 0 0 4px rgba(16, 185, 129, 0.55);
}

.vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-tails {
  background: radial-gradient(circle at 32% 26%, #eff6ff 0%, #93c5fd 32%, #3b82f6 58%, #1d4ed8 88%, #172554 100%);
  box-shadow:
    inset 0 5px 14px rgba(255, 255, 255, 0.48),
    inset 0 -8px 18px rgba(0, 0, 0, 0.26),
    0 0 0 4px rgba(59, 130, 246, 0.5);
}

/* Yes / No — teal vs rose */
.vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-heads {
  background: radial-gradient(circle at 32% 26%, #ecfdf5 0%, #86efac 30%, #22c55e 56%, #15803d 86%, #14532d 100%);
  box-shadow:
    inset 0 5px 14px rgba(255, 255, 255, 0.5),
    inset 0 -8px 18px rgba(0, 0, 0, 0.22),
    0 0 0 4px rgba(34, 197, 94, 0.5);
}

.vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-tails {
  background: radial-gradient(circle at 32% 26%, #fff1f2 0%, #fda4af 30%, #f43f5e 56%, #be123c 86%, #881337 100%);
  box-shadow:
    inset 0 5px 14px rgba(255, 255, 255, 0.48),
    inset 0 -8px 18px rgba(0, 0, 0, 0.24),
    0 0 0 4px rgba(244, 63, 94, 0.48);
}

/* A / B — violet vs amber */
.vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-heads {
  background: radial-gradient(circle at 32% 26%, #f5f3ff 0%, #c4b5fd 30%, #8b5cf6 56%, #6d28d9 86%, #3b0764 100%);
  box-shadow:
    inset 0 5px 14px rgba(255, 255, 255, 0.5),
    inset 0 -8px 18px rgba(0, 0, 0, 0.22),
    0 0 0 4px rgba(139, 92, 246, 0.5);
}

.vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-tails {
  background: radial-gradient(circle at 32% 26%, #fffbeb 0%, #fcd34d 30%, #f59e0b 56%, #b45309 86%, #78350f 100%);
  box-shadow:
    inset 0 5px 14px rgba(255, 255, 255, 0.5),
    inset 0 -8px 18px rgba(0, 0, 0, 0.24),
    0 0 0 4px rgba(245, 158, 11, 0.55);
}

.vault-cointoss .cointoss-coin__glyph {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 800;
  font-size: clamp(2.75rem, 14vw, 3.75rem);
  line-height: 1;
  color: #0f172a;
  text-shadow: 0 2px 0 rgba(255, 255, 255, 0.55), 0 -1px 0 rgba(15, 23, 42, 0.08);
}

.vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-heads .cointoss-coin__glyph {
  color: #064e3b;
}

.vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-tails .cointoss-coin__glyph {
  color: #1e3a8a;
}

.vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-heads .cointoss-coin__glyph {
  color: #14532d;
}

.vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-tails .cointoss-coin__glyph {
  color: #881337;
}

.vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-heads .cointoss-coin__glyph {
  color: #4c1d95;
}

.vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-tails .cointoss-coin__glyph {
  color: #78350f;
}

[data-theme="dark"] .vault-cointoss .cointoss-coin__glyph {
  color: #f1f5f9;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.55);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-heads .cointoss-coin__glyph {
  color: #d1fae5;
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-tails .cointoss-coin__glyph {
  color: #dbeafe;
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-heads .cointoss-coin__glyph {
  color: #bbf7d0;
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-tails .cointoss-coin__glyph {
  color: #fecdd3;
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-heads .cointoss-coin__glyph {
  color: #e9d5ff;
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-tails .cointoss-coin__glyph {
  color: #fde68a;
}

.vault-cointoss .cointoss-coin__word {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(28, 20, 16, 0.88);
  max-width: 11rem;
  text-align: center;
  line-height: 1.25;
}

.vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-heads .cointoss-coin__word {
  color: rgba(6, 78, 59, 0.95);
}

.vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-tails .cointoss-coin__word {
  color: rgba(30, 58, 138, 0.95);
}

.vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-heads .cointoss-coin__word {
  color: rgba(20, 83, 45, 0.95);
}

.vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-tails .cointoss-coin__word {
  color: rgba(136, 19, 55, 0.95);
}

.vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-heads .cointoss-coin__word {
  color: rgba(76, 29, 149, 0.95);
}

.vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-tails .cointoss-coin__word {
  color: rgba(120, 53, 15, 0.95);
}

[data-theme="dark"] .vault-cointoss .cointoss-coin__word {
  color: rgba(250, 250, 249, 0.92);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-heads .cointoss-coin__word {
  color: rgba(167, 243, 208, 0.98);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-tails .cointoss-coin__word {
  color: rgba(191, 219, 254, 0.98);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-heads .cointoss-coin__word {
  color: rgba(187, 247, 208, 0.98);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-tails .cointoss-coin__word {
  color: rgba(254, 205, 211, 0.98);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-heads .cointoss-coin__word {
  color: rgba(233, 213, 255, 0.98);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-tails .cointoss-coin__word {
  color: rgba(253, 230, 138, 0.98);
}

.vault-cointoss .cointoss-coin__hint {
  font-family: var(--qk-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: rgba(28, 20, 16, 0.55);
  margin-top: 0.15rem;
}

.vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin__hint {
  color: rgba(5, 95, 70, 0.75);
}

.vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin__hint {
  color: rgba(30, 64, 175, 0.75);
}

.vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin__hint {
  color: rgba(107, 33, 168, 0.75);
}

[data-theme="dark"] .vault-cointoss .cointoss-coin__hint {
  color: rgba(250, 250, 249, 0.45);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin__hint {
  color: rgba(167, 243, 208, 0.65);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin__hint {
  color: rgba(191, 219, 254, 0.65);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin__hint {
  color: rgba(233, 213, 255, 0.65);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-heads {
  background: radial-gradient(circle at 32% 26%, #064e3b 0%, #047857 35%, #065f46 72%, #022c22 100%);
  border-color: rgba(52, 211, 153, 0.35);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ht"] .cointoss-coin.is-tails {
  background: radial-gradient(circle at 32% 26%, #1e3a8a 0%, #1d4ed8 38%, #2563eb 72%, #172554 100%);
  border-color: rgba(96, 165, 250, 0.35);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-heads {
  background: radial-gradient(circle at 32% 26%, #14532d 0%, #166534 38%, #15803d 72%, #052e16 100%);
  border-color: rgba(74, 222, 128, 0.35);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="yn"] .cointoss-coin.is-tails {
  background: radial-gradient(circle at 32% 26%, #881337 0%, #be123c 40%, #e11d48 72%, #4c0519 100%);
  border-color: rgba(251, 113, 133, 0.4);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-heads {
  background: radial-gradient(circle at 32% 26%, #4c1d95 0%, #7c3aed 38%, #6d28d9 72%, #2e1065 100%);
  border-color: rgba(196, 181, 253, 0.35);
}

[data-theme="dark"] .vault-cointoss[data-cointoss-mode="ab"] .cointoss-coin.is-tails {
  background: radial-gradient(circle at 32% 26%, #78350f 0%, #b45309 38%, #d97706 72%, #451a03 100%);
  border-color: rgba(252, 211, 77, 0.35);
}

/* Counter + stopwatch (dedicated micro-tool; lighter than embedding in coin toss) */
.vault-cntsw {
  contain: layout style;
}

.vault-cntsw-lead {
  margin: 0 0 1rem;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--qk-text-muted);
}

.vault-cntsw .cntsw-panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15.5rem, 1fr));
  gap: 1rem;
  align-items: stretch;
}

.vault-cntsw .cntsw-card {
  padding: 1rem 1.05rem;
  border-radius: var(--qk-radius-md);
  border: 1px solid var(--qk-border);
  background: var(--qk-surface-tint);
  contain: layout style;
}

.vault-cntsw .cntsw-card__h {
  margin: 0 0 0.65rem;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--qk-text-soft);
}

.vault-cntsw .cntsw-counter {
  font-family: var(--qk-mono);
  font-size: clamp(2.25rem, 8vw, 3rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  margin: 0.25rem 0 0.85rem;
  color: var(--qk-text);
}

.vault-cntsw .cntsw-timer {
  font-family: var(--qk-mono);
  font-size: clamp(1.65rem, 5vw, 2.1rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--qk-accent);
  margin: 0.25rem 0 0.85rem;
  line-height: 1.15;
}

.vault-cntsw .cntsw-toolbar {
  flex-wrap: wrap;
  gap: 0.45rem;
}

.vault-cntsw .cntsw-toolbar .btn {
  min-height: 2.35rem;
}

.vault-cntsw .cntsw-more {
  margin-top: 1.15rem;
  padding: 0.9rem 1rem;
  border-radius: var(--qk-radius-md);
  border: 1px solid var(--qk-border);
  background: var(--qk-surface-tint);
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--qk-text-muted);
}

.vault-cntsw .cntsw-more .linkish {
  display: inline;
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  font: inherit;
  font-weight: 700;
  color: var(--qk-accent);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.vault-cntsw .cntsw-more .linkish:hover,
.vault-cntsw .cntsw-more .linkish:focus-visible {
  color: var(--qk-accent-hover);
  outline: none;
}

.vault-cointoss .cointoss-flip {
  min-height: 2.85rem;
  font-weight: 800;
  font-size: 1rem;
}

.vault-cointoss .cointoss-actions {
  flex-wrap: wrap;
  gap: 0.5rem;
}

.vault-cointoss .cointoss-history {
  margin: 0.85rem 0 0;
  text-align: center;
  font-family: var(--qk-mono);
  font-size: 0.8rem;
}

.vault-cointoss .cointoss-more {
  margin-top: 1.25rem;
  padding: 0.9rem 1rem;
  border-radius: var(--qk-radius-md);
  border: 1px solid var(--qk-border);
  background: var(--qk-surface-tint);
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--qk-text-muted);
}

.vault-cointoss .cointoss-more .linkish {
  display: inline;
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  font: inherit;
  font-weight: 700;
  color: var(--qk-accent);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.vault-cointoss .cointoss-more .linkish:hover,
.vault-cointoss .cointoss-more .linkish:focus-visible {
  color: var(--qk-accent-hover);
  outline: none;
}

@keyframes cointossSpin {
  0% {
    transform: rotateY(0deg) rotateX(0deg) scale(1);
  }
  45% {
    transform: rotateY(92deg) rotateX(8deg) scale(0.94);
  }
  100% {
    transform: rotateY(0deg) rotateX(0deg) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .vault-cointoss .cointoss-coin.is-flipping {
    animation: none;
  }
}

.vault-related-wrap {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--qk-border);
}

.vault-related__h {
  margin: 0 0 0.35rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--qk-text-soft);
}

.vault-related__hint {
  margin: 0 0 0.65rem;
}

.vault-related {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.5rem;
}

.vault-related__btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
  text-align: left;
  padding: 0.55rem 0.65rem;
  border-radius: 10px;
  border: 2px solid var(--qk-border-strong);
  background: linear-gradient(180deg, var(--qk-surface-elevated) 0%, var(--qk-input-bg-soft) 100%);
  cursor: pointer;
  font: inherit;
  color: inherit;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45), 0 2px 0 var(--qk-border);
  transition: border-color 0.12s ease, transform 0.08s ease, box-shadow 0.08s ease;
}

.vault-related__btn:hover {
  border-color: var(--qk-accent);
}

.vault-related__btn:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.08), 0 1px 0 var(--qk-border);
}

.vault-related__t {
  font-weight: 600;
  font-size: 0.82rem;
}

.vault-related__d {
  font-size: 0.72rem;
  color: var(--qk-text-muted);
  line-height: 1.35;
}

/* Generators — categories */
.gen-cat-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--qk-border);
}

.gen-cat-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--qk-accent);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: 8px;
}

.gen-cat-link:hover,
.gen-cat-link:focus-visible {
  background: var(--qk-surface-tint);
  outline: none;
}

.gen-cat-anchor {
  scroll-margin-top: 5rem;
}

.gen-cat-label {
  margin: 0 0 0.75rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--qk-text-soft);
}

.gen-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 820px) {
  .gen-split {
    grid-template-columns: 1fr;
  }
}

.gen-opt-row {
  flex-wrap: wrap;
  align-items: flex-end;
}

.bc-wrap {
  margin-top: 0.75rem;
  padding: 0.75rem;
  background: var(--qk-input-bg-soft);
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-sm);
  overflow: auto;
}

.bc-svg {
  display: block;
  max-width: 100%;
  height: auto;
}

.pp-preview-wrap {
  margin-top: 0.75rem;
}

.pp-preview {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--qk-radius-sm);
  border: 1px solid var(--qk-border);
}

.gen-file {
  margin-top: 0.5rem;
}

/* Home — smart suggestions */
.home-smart-hint {
  margin-top: 0.75rem;
  max-width: 44rem;
}

.home-suggested {
  margin: 0 0 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--qk-radius-md);
  border: 1px solid rgba(61, 90, 237, 0.15);
  background: linear-gradient(135deg, var(--qk-surface-tint) 0%, var(--qk-input-bg-soft) 100%);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

.home-suggested[hidden] {
  display: none !important;
}

.home-micro-tools {
  margin-top: 1.75rem;
  scroll-margin-top: 0.75rem;
}

.home-micro-tools__lead {
  margin: 0.35rem 0 1rem;
  max-width: 48rem;
}

.home-standalone-pages {
  margin-top: 1.5rem;
  scroll-margin-top: 0.75rem;
}

.home-standalone-pages__lead {
  margin: 0.35rem 0 0.85rem;
  max-width: 52rem;
}

.home-flows {
  margin-top: 0.95rem;
  position: relative;
  overflow-x: visible;
  overflow-y: visible;
}

.home-flows__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.45rem 0.9rem;
  margin-bottom: 0.8rem;
}

.home-flow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(236px, 1fr));
  gap: 0.72rem;
}

a.home-flow-btn {
  text-decoration: none;
  color: inherit;
  box-sizing: border-box;
}

.home-flow-btn {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.3rem;
  min-height: 8.6rem;
  text-align: left;
  border: 1px solid color-mix(in oklab, var(--qk-border-strong) 78%, transparent);
  border-radius: calc(var(--qk-radius-sm) + 2px);
  background:
    radial-gradient(120% 160% at 100% -10%, rgba(61, 90, 237, 0.14), transparent 52%),
    linear-gradient(155deg, var(--qk-surface) 0%, var(--qk-input-bg-soft) 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.6),
    0 4px 14px rgba(15, 23, 42, 0.06);
  padding: 0.8rem 0.85rem 0.78rem;
  cursor: pointer;
  transition:
    border-color 0.2s var(--qk-ease-premium),
    transform 0.2s var(--qk-ease-premium),
    box-shadow 0.2s var(--qk-ease-premium),
    background 0.2s var(--qk-ease-premium);
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(61, 90, 237, 0.14);
}

.home-flow-btn__kicker {
  display: inline-flex;
  align-items: center;
  border: 1px solid color-mix(in oklab, var(--qk-accent) 45%, transparent);
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--qk-accent-strong);
  background: color-mix(in oklab, var(--qk-accent) 9%, transparent);
}

.home-flow-btn:hover,
.home-flow-btn:focus-visible {
  border-color: rgba(61, 90, 237, 0.5);
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.65),
    0 10px 24px rgba(61, 90, 237, 0.16);
  outline: none;
}

.home-flow-btn__title {
  display: block;
  font-family: var(--qk-font-heading);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--qk-text);
}

.home-flow-btn__desc {
  display: block;
  margin-top: 0.1rem;
  font-size: 0.79rem;
  line-height: 1.45;
  color: var(--qk-text-muted);
}

.home-flow-btn__cta {
  margin-top: auto;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: color-mix(in oklab, var(--qk-accent-strong) 80%, var(--qk-text));
}

.home-flow-btn:active {
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .home-flow-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .home-flows {
    margin-top: 0.85rem;
  }

  .home-flow-grid {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(86%, 1fr);
    grid-template-columns: none;
    overflow-x: auto;
    overflow-y: hidden;
    gap: 0.65rem;
    padding: 0.05rem 0.1rem 0.35rem 0;
    scroll-snap-type: x mandatory;
    scroll-padding-left: 0.1rem;
    -webkit-overflow-scrolling: touch;
  }

  .home-flow-grid::-webkit-scrollbar {
    height: 5px;
  }

  .home-flow-grid::-webkit-scrollbar-thumb {
    background: color-mix(in oklab, var(--qk-border-strong) 70%, transparent);
    border-radius: 999px;
  }

  .home-flow-btn {
    min-height: 8.2rem;
    scroll-snap-align: start;
  }
}

#view-viewers .pre-out {
  margin-top: 0.7rem;
  min-height: 180px;
}

#view-viewers #view-editor {
  margin-top: 0.55rem;
}

#view-pdf-meta {
  align-self: center;
}

.home-suggest-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.65rem;
  margin-bottom: 0.55rem;
}

.home-suggest-row:last-child {
  margin-bottom: 0;
}

.home-suggest-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--qk-text-soft);
  min-width: 5rem;
}

.home-suggest-main {
  font-size: 0.88rem;
}

.home-suggest-chip {
  border: 1px solid var(--qk-border);
  background: var(--qk-surface);
  color: var(--qk-text);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}

.home-suggest-chip:hover {
  border-color: var(--qk-accent);
  background: var(--qk-input-bg-soft);
}

.home-more {
  margin-top: 1rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--qk-radius-md);
  border: 1px dashed var(--qk-border-strong);
  background: var(--qk-input-bg-soft);
}

.home-more summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--qk-text-muted);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.home-more summary::-webkit-details-marker {
  display: none;
}

.home-more summary::after {
  content: "";
  flex: 0 0 auto;
  margin-left: auto;
  width: 0.45rem;
  height: 0.45rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  opacity: 0.55;
  transform: rotate(-45deg);
  transition: transform var(--qk-details-dur) var(--qk-details-ease);
}

.home-more[open] summary::after {
  transform: rotate(45deg);
}

.home-card-grid--secondary {
  margin-top: 0.75rem;
}

.canvas-wrap--sig {
  background: #fff;
  border-radius: var(--qk-radius-sm);
}

.sig-canvas {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  touch-action: none;
  cursor: crosshair;
}

.sig-live-wrap {
  margin-top: 0.75rem;
}

.sig-live-label {
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--qk-text-soft);
}

/* Micro-tool popup (vault tools open in a sheet over the directory) */
body.tool-modal-open {
  overflow: hidden;
}

.tool-modal {
  position: fixed;
  inset: 0;
  z-index: 8500;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
  pointer-events: none;
}

.tool-modal[hidden] {
  display: none !important;
}

.tool-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.48);
  pointer-events: auto;
  backdrop-filter: blur(2px);
}

[data-theme="dark"] .tool-modal__backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.tool-modal__sheet {
  position: relative;
  width: min(42rem, 100%);
  max-height: min(88vh, 100%);
  margin: 0 auto;
  padding: 0 env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  border-radius: var(--qk-radius-md) var(--qk-radius-md) 0 0;
  border: 1px solid var(--qk-border);
  border-bottom: none;
  background: var(--qk-surface);
  box-shadow: 0 -12px 40px rgba(15, 23, 42, 0.18);
  display: flex;
  flex-direction: column;
  min-height: 0;
  pointer-events: auto;
  outline: none;
  transform: translate3d(0, 0, 0);
  contain: layout paint;
  transition: transform 0.22s ease, opacity 0.2s ease;
}

@media (min-width: 720px) {
  .tool-modal {
    align-items: center;
    padding: 1rem;
  }

  .tool-modal__sheet {
    border-radius: var(--qk-radius-md);
    border: 1px solid var(--qk-border);
    max-height: min(86vh, 720px);
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.22);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tool-modal__sheet {
    transition: none;
  }
}

.tool-modal__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem 0.65rem;
  border-bottom: 1px solid var(--qk-border);
  flex-shrink: 0;
}

.tool-modal__head-text {
  min-width: 0;
}

.tool-modal__eyebrow {
  margin: 0 0 0.2rem;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--qk-text-soft);
}

.tool-modal__title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--qk-text);
}

.tool-modal__desc {
  margin: 0.35rem 0 0;
  font-size: 0.86rem;
  line-height: 1.45;
  color: var(--qk-text-muted);
}

.tool-modal__close {
  flex-shrink: 0;
  min-width: 2.5rem;
  min-height: 2.5rem;
  padding: 0.35rem;
  font-size: 1.1rem;
  line-height: 1;
}

.tool-modal__body {
  padding: 0.75rem 1rem 1rem;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  min-height: 0;
  flex: 1;
}

/* Floating quick-guide helper */
.assist-fab {
  position: fixed;
  right: max(0.8rem, env(safe-area-inset-right));
  bottom: max(0.9rem, env(safe-area-inset-bottom));
  z-index: 9300;
  width: 2.65rem;
  height: 2.65rem;
  border-radius: 999px;
  border: 1px solid rgba(61, 90, 237, 0.34);
  background: linear-gradient(150deg, var(--qk-accent), #2b4be8);
  color: #fff;
  font-size: 1.12rem;
  font-weight: 800;
  box-shadow: 0 10px 22px rgba(61, 90, 237, 0.34);
}

.assist-fab:hover {
  transform: translateY(-1px);
}

body.assist-open {
  overflow: hidden;
}

.assist-modal {
  position: fixed;
  inset: 0;
  z-index: 9200;
}

.assist-modal[hidden] {
  display: none !important;
}

.assist-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
}

.assist-modal__sheet {
  position: relative;
  width: min(34rem, calc(100% - 1.25rem));
  margin: min(8vh, 4rem) auto 0;
  border: 1px solid var(--qk-border);
  border-radius: var(--qk-radius-md);
  background: var(--qk-surface);
  box-shadow: 0 24px 64px rgba(15, 23, 42, 0.24);
  padding: 0.95rem 1rem 1rem;
}

.assist-modal__head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.assist-modal__eyebrow {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--qk-text-soft);
  font-weight: 800;
}

.assist-modal__title {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 800;
  color: var(--qk-text);
  flex: 1;
}

.assist-modal__close {
  min-width: 2.2rem;
  min-height: 2.2rem;
  padding: 0.2rem;
  line-height: 1;
}

.assist-modal__desc {
  margin: 0.65rem 0 0.55rem;
  color: var(--qk-text-muted);
  font-size: 0.9rem;
}

.assist-modal__steps {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--qk-text);
}

.assist-modal__steps li {
  margin: 0.4rem 0;
  line-height: 1.5;
}

.assist-modal__actions {
  margin-top: 0.85rem;
  display: flex;
  justify-content: flex-end;
}