/**
 * main.css — SoChoosey layout, typography, and base components
 *
 * Requires tokens.css to be loaded first.
 * Animation stage visuals  → animations.css  (Module 5)
 * Settings modal           → modal.css        (Module 7)
 * Accessibility overrides  → accessibility.css
 *
 * CSS logical properties are used throughout (padding-inline vs padding-left)
 * so that Arabic RTL layout works correctly without extra overrides.
 */


/* ═══════════════════════════════════════════════════════════════════════════
   FONT FACES
   TODO (pre-production): replace Google Fonts CDN links in index.html with
   self-hosted woff2 files in /assets/fonts/Nunito/ and /assets/fonts/Inter/.
   The @font-face rules live here; for now the fonts are served by Google.
   Weights loaded: Nunito 700, 800 — Inter 400, 500, 600.
   ═══════════════════════════════════════════════════════════════════════════ */


/* ═══════════════════════════════════════════════════════════════════════════
   RESET
   ═══════════════════════════════════════════════════════════════════════════ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

ul:not([class]),
ol:not([class]) {
  list-style: none;
}

img,
svg {
  display: block;
  max-inline-size: 100%;
}

/* Browsers default form controls to the system font — override to inherit. */
button,
input,
select,
textarea {
  font: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}


/* ═══════════════════════════════════════════════════════════════════════════
   BASE
   ═══════════════════════════════════════════════════════════════════════════ */

html {
  font-size: 100%;       /* Respects user's browser font size preference    */
  scroll-behavior: smooth;
  overflow-x: hidden;    /* Prevent horizontal blowout on narrow viewports  */
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--fw-regular);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scrollbar-gutter: stable;  /* Reserve scrollbar space — prevents layout shift */
  min-block-size: 100dvh;
}


/* ═══════════════════════════════════════════════════════════════════════════
   TYPOGRAPHY
   ═══════════════════════════════════════════════════════════════════════════ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

h1 { font-size: var(--text-4xl); font-weight: var(--fw-extrabold); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  line-height: var(--leading-relaxed);
}

/* Bare anchor links (no class) get brand styling. */
a:not([class]) {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  transition: color var(--transition-fast);
}

a:not([class]):hover {
  color: var(--color-primary-hover);
}

/* Global focus ring — applies to all interactive elements. */
:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}


/* ═══════════════════════════════════════════════════════════════════════════
   ACCESSIBILITY UTILITIES
   ═══════════════════════════════════════════════════════════════════════════ */

/* Skip-to-content link — invisible until focused, WCAG 2.4.1 bypass block. */
.skip-link {
  position: absolute;
  inset-block-start: var(--space-2);
  inset-inline-start: var(--space-2);
  z-index: var(--z-toast);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--color-text-inverse);
  outline-offset: 2px;
}

/* Tooltip — used by the "how we pick" info button.
   Full styling extended in accessibility.css once that module is built.  */

/* Wrapper gives the tooltip an anchor for position: absolute. */
.how-we-pick-wrap {
  position: relative;
}

.tooltip {
  position: absolute;
  z-index: var(--z-dropdown);
  max-inline-size: 22rem;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
  /* Default: appear above the button, horizontally centred. */
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  white-space: normal;
}

/* Downward caret — points at the button when tooltip is above. */
.tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--color-surface-raised);
}

/* Flipped: tooltip below the button when it would overflow the top viewport edge. */
.tooltip--below {
  bottom: auto;
  top: calc(100% + 8px);
}

/* Upward caret — points at the button when tooltip is below. */
.tooltip--below::after {
  top: auto;
  bottom: 100%;
  border-top-color: transparent;
  border-bottom-color: var(--color-surface-raised);
}

/* Empty state is permanently hidden — a default list is always loaded on init. */
.animation-stage__empty { display: none; }

/* Spin row within stage-actions */
.stage-actions__spin-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
}

/* Visually hidden but announced by screen readers.
   Use for icon button labels and aria-live winner announcements.          */
.sr-only {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}


/* ═══════════════════════════════════════════════════════════════════════════
   NAVIGATION
   Sticky full-width bar. Logo on the inline-start, actions on inline-end.
   Sticky so it stays visible during long SEO content scroll.
   ═══════════════════════════════════════════════════════════════════════════ */

.nav {
  position: sticky;
  inset-block-start: 0;
  z-index: var(--z-sticky);
  block-size: var(--nav-height);
  inline-size: 100%;
  display: flex;
  align-items: center;
  padding-inline: var(--space-4);
  background-color: var(--color-surface-raised);
  border-block-end: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.nav__logo-img {
  block-size: 2rem;
  inline-size: auto;
}

/* Gradient text on the wordmark for the energetic brand feel. */
.nav__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--fw-extrabold);
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__spacer {
  flex: 1;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Settings gear and language switcher buttons. 44×44px WCAG touch target. */
.nav__icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  inline-size: 2.75rem;
  block-size: 2.75rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.nav__icon-btn:hover {
  color: var(--color-text);
  background-color: var(--color-surface);
}

/* Language button: allow extra width to fit the 2-char code label. */
#lang-btn {
  inline-size: auto;
  padding-inline: var(--space-2);
  gap: var(--space-1);
}

.lang-code {
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.05em;
}


/* ═══════════════════════════════════════════════════════════════════════════
   APP SHELL
   Max-width container centered in the viewport.
   Mobile-first: single column by default, two-column at 768px+.
   ═══════════════════════════════════════════════════════════════════════════ */

.app {
  max-inline-size: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
  padding-block: var(--space-6);
}

/* Single column on mobile, overridden to two columns in the desktop query. */
.app__columns {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}


/* ═══════════════════════════════════════════════════════════════════════════
   ANIMATION COLUMN (left on desktop, full width on mobile)
   ═══════════════════════════════════════════════════════════════════════════ */

.col-animation {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-inline-size: 0;  /* Prevent grid overflow with long content */
}

/* ── Animation type picker ──────────────────────────────────────────────────
   Mobile: single scrollable row of 7 cards.
   Desktop: wrapping grid (see media query below).                         */

.animation-picker {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
}

.animation-picker__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  min-inline-size: 0;
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  background-color: var(--color-surface-raised);
  cursor: pointer;
  user-select: none;
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.animation-picker__card:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.animation-picker__card.is-active {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.animation-picker__icon {
  block-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  line-height: var(--leading-none);
}

.animation-picker__label {
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  text-align: center;
  line-height: var(--leading-tight);
}

.animation-picker__card.is-active .animation-picker__label {
  color: var(--color-primary);
}

/* ── Animation stage ────────────────────────────────────────────────────────
   Container for whichever animation engine is currently active.
   Animation-specific rendering (canvas, elements) lives in animations.css.  */

.animation-stage {
  position: relative;
  min-block-size: var(--stage-min-height);
  border-radius: var(--radius-xl);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
}

/* Fullscreen mode — covers the entire viewport. */
.animation-stage.is-fullscreen {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  min-block-size: 100dvh;
  border-radius: 0;
  border: none;
  overflow: visible;
}

/* Spin row moved inside the stage during fullscreen — pinned to bottom center. */
.animation-stage.is-fullscreen .stage-actions__spin-row {
  position: absolute;
  inset-block-end: var(--space-8);
  inset-inline-start: 50%;
  transform: translateX(-50%);
  flex: unset;
  z-index: 1;
}

/* ── Stage action buttons ────────────────────────────────────────────────── */

.stage-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}


/* ═══════════════════════════════════════════════════════════════════════════
   LIST COLUMN (right on desktop, full width on mobile)
   ═══════════════════════════════════════════════════════════════════════════ */

.col-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-inline-size: 0;
}

/* ── List panel card ─────────────────────────────────────────────────────── */

.list-panel {
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

/* Collapsible sections: presets, saved lists, build form, history. */
.list-section {
  border-block-end: 1px solid var(--color-border);
}

.list-section:last-child {
  border-block-end: none;
}

.list-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  cursor: pointer;
  user-select: none;
  transition: background-color var(--transition-fast);
}

.list-section__header:hover {
  background-color: var(--color-surface);
}

.list-section__title {
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.list-section__toggle {
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
}

.list-section.is-open .list-section__toggle {
  transform: rotate(180deg);
}

.list-section__body {
  padding: 0 var(--space-4) var(--space-4);
  display: none;
}

.list-section.is-open .list-section__body {
  display: block;
}

/* ── Pill buttons — presets and saved lists ──────────────────────────────── */

.list-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.list-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  cursor: pointer;
  /* Block size + padding totals ≥44px for WCAG touch target compliance. */
  min-block-size: 2.25rem;
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast);
}

/* Preset pills: dashed border, transparent fill. */
.list-pill--preset {
  border: 2px dashed var(--color-border-strong);
  background-color: transparent;
  color: var(--color-text-muted);
}

.list-pill--preset:hover,
.list-pill--preset.is-active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Saved list pills: solid border. */
.list-pill--saved {
  border: 2px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
}

.list-pill--saved:hover,
.list-pill--saved.is-active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Delete × inside saved list pills. */
.list-pill__remove {
  display: flex;
  align-items: center;
  justify-content: center;
  inline-size: 1rem;
  block-size: 1rem;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.list-pill__remove:hover {
  color: var(--color-error);
  background-color: var(--color-error-light);
}

/* ── Value chips (tags in the active list) ───────────────────────────────── */

.value-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding-block: var(--space-2);
}

.value-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
}

.value-chip__remove {
  display: flex;
  align-items: center;
  justify-content: center;
  inline-size: 0.875rem;
  block-size: 0.875rem;
  border-radius: var(--radius-full);
  color: currentColor;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.value-chip__remove:hover {
  opacity: 1;
}

/* ── Build form ──────────────────────────────────────────────────────────── */

.build-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.form-row {
  display: flex;
  gap: var(--space-2);
}

/* ── Equal probability badge ─────────────────────────────────────────────── */

.probability-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background-color: var(--color-success-light);
  color: var(--color-success);
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
}


/* ═══════════════════════════════════════════════════════════════════════════
   BUTTONS
   Base: .btn
   Variants: --primary, --secondary, --ghost, --danger, --spin
   Sizes: default, --sm, --lg, --icon
   ═══════════════════════════════════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  line-height: var(--leading-none);
  border: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  user-select: none;
  /* WCAG AA minimum touch target height. */
  min-block-size: 2.75rem;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    filter var(--transition-fast),
    transform var(--transition-fast);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

/* Filled primary — main CTAs. */
.btn--primary {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-md);
}

.btn--primary:hover:not(:disabled) {
  box-shadow: var(--shadow-lg);
  filter: brightness(1.08);
}

/* Outlined secondary — secondary actions. */
.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--secondary:hover:not(:disabled) {
  background-color: var(--color-primary-light);
}

/* Ghost — low-emphasis actions. */
.btn--ghost {
  background-color: transparent;
  color: var(--color-text-muted);
}

.btn--ghost:hover:not(:disabled) {
  background-color: var(--color-surface);
  color: var(--color-text);
}

/* Danger — destructive actions. */
.btn--danger {
  background-color: var(--color-error);
  color: var(--color-text-inverse);
}

.btn--danger:hover:not(:disabled) {
  background-color: var(--color-error-hover);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  min-block-size: 2.25rem;
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  font-family: var(--font-display);
  font-weight: var(--fw-extrabold);
  border-radius: var(--radius-lg);
  min-block-size: 3.5rem;
}

/* Icon-only — square button, no padding. */
.btn--icon {
  padding: 0;
  inline-size: 2.75rem;
  block-size: 2.75rem;
  border-radius: var(--radius-md);
}

/* Spin — hero gradient, prominent shadow. */
.btn--spin {
  background: var(--gradient-hero);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-lg);
  letter-spacing: 0.03em;
  flex: 1;
}

.btn--spin:hover:not(:disabled) {
  box-shadow: var(--shadow-xl);
  filter: brightness(1.06);
}


/* ═══════════════════════════════════════════════════════════════════════════
   FORM CONTROLS
   ═══════════════════════════════════════════════════════════════════════════ */

.input {
  inline-size: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  background-color: var(--color-surface-inset);
  color: var(--color-text);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  min-block-size: 2.75rem;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.input::placeholder {
  color: var(--color-text-muted);
}

.input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus);
}

.textarea {
  resize: vertical;
  min-block-size: 5rem;
}

.label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-muted);
  margin-block-end: var(--space-1);
}


/* ═══════════════════════════════════════════════════════════════════════════
   WINNER ANNOUNCEMENT — ARIA LIVE REGION
   Invisible to sighted users; screen readers announce updates automatically.
   The visible winner overlay is rendered by celebration.js (Module 8).
   ═══════════════════════════════════════════════════════════════════════════ */

.winner-announcement {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}


/* ═══════════════════════════════════════════════════════════════════════════
   AD SLOTS
   Placeholder containers for Google AdSense units.
   The actual ad script tag must carry data-cfasync="false" in index.html.
   Do NOT enable Cloudflare Rocket Loader — it breaks AdSense.
   ═══════════════════════════════════════════════════════════════════════════ */

.ad-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  overflow: hidden;
}

/* 728×90 leaderboard — below the two columns, desktop only. */
.ad-slot--leaderboard {
  inline-size: 100%;
  min-block-size: 5.625rem;  /* 90px */
  margin-block-start: var(--space-6);
  display: none;  /* hidden on mobile; shown in desktop query below */
}

/* 300×250 rectangle — inside list column, mobile only. */
.ad-slot--rectangle {
  inline-size: 18.75rem;   /* 300px */
  block-size: 15.625rem;   /* 250px */
  margin-inline: auto;
}


/* ═══════════════════════════════════════════════════════════════════════════
   SEO CONTENT — use-case cards, fairness points, FAQ accordion
   ═══════════════════════════════════════════════════════════════════════════ */

.seo-use-cases,
.seo-fairness,
.seo-faq {
  margin-block-start: var(--space-16);
}

.seo-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--fw-bold);
  margin-block-end: var(--space-8);
  text-align: center;
}

/* ── Use-case cards ── */

.seo-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-6);
}

.seo-card {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.seo-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--fw-bold);
}

.seo-card__body {
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  font-size: var(--text-sm);
}

/* ── Fairness points ── */

.seo-points {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.seo-point {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-block-start: var(--space-4);
  border-block-start: 3px solid var(--color-primary);
}

.seo-point__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--fw-bold);
}

.seo-point__body {
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  font-size: var(--text-sm);
}

/* ── FAQ accordion ── */

.faq-accordion {
  display: flex;
  flex-direction: column;
  max-inline-size: 72ch;
  margin-inline: auto;
}

.faq-accordion__item {
  border-block-end: 1px solid var(--color-border);
}

.faq-accordion__item:first-child {
  border-block-start: 1px solid var(--color-border);
}

.faq-accordion__details {
  padding-block: var(--space-4);
}

.faq-accordion__question {
  font-weight: var(--fw-semibold);
  font-size: var(--text-base);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-text);
}

.faq-accordion__question::-webkit-details-marker { display: none; }

.faq-accordion__question::after {
  content: '+';
  font-size: var(--text-xl);
  font-weight: var(--fw-normal);
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform 200ms ease;
}

.faq-accordion__details[open] .faq-accordion__question::after {
  transform: rotate(45deg);
}

.faq-accordion__answer {
  margin-block-start: var(--space-3);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  font-size: var(--text-sm);
}


/* ═══════════════════════════════════════════════════════════════════════════
   HISTORY ENTRIES — history.js (Module 9)
   Rendered inside the collapsible history section of the list panel.
   ═══════════════════════════════════════════════════════════════════════════ */

.history-entry {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-block: var(--space-2);
  border-block-end: 1px solid var(--color-border);
}

.history-entry:last-child {
  border-block-end: none;
}

.history-entry__icon {
  font-size: var(--text-xl);
  line-height: 1;
  flex-shrink: 0;
}

.history-entry__content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-inline-size: 0;
}

.history-entry__winner {
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-entry__meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Empty-state message inside collapsible panels. */
.list-empty {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-block: var(--space-2);
}

/* "Only one item left" warning inside the winner overlay. */
.winner-overlay__onemsg {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
}


/* ═══════════════════════════════════════════════════════════════════════════
   WINNER OVERLAY — celebration.js (Module 8)
   Full-viewport overlay displayed after every spin.
   The dark backdrop, GSAP-animated text, and Lottie frame are children.
   The celebration canvas sits above the content (pointer-events: none).
   ═══════════════════════════════════════════════════════════════════════════ */

.winner-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

/* Without this rule, "display: flex" above beats the browser's built-in
   [hidden] { display: none } user-agent rule, leaving the overlay
   rendered (and intercepting all clicks) even when hidden is set. */
.winner-overlay[hidden] {
  display: none;
  pointer-events: none;
}

.winner-overlay__bg {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
}

.winner-overlay__canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}

.winner-overlay__inner {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
  max-inline-size: 32rem;
  max-block-size: 90vh;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
  padding: var(--space-8) var(--space-6);
}

.winner-overlay__intro {
  font-size: var(--text-lg);
  font-weight: var(--fw-semibold);
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.02em;
  opacity: 0;
}

.winner-overlay__name {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 8vw, var(--text-5xl));
  font-weight: var(--fw-extrabold);
  color: #ffffff;
  text-shadow: 0 2px 24px rgba(108, 71, 255, 0.7);
  line-height: var(--leading-tight);
  word-break: break-word;
  opacity: 0;
}

.winner-overlay__lottie {
  inline-size: 8rem;
  block-size: 8rem;
  flex-shrink: 0;
}

.winner-overlay__particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}

.winner-particle {
  position: absolute;
  border-radius: var(--radius-full);
  animation: particleFloat 4s ease-out forwards;
}

@keyframes particleFloat {
  0%   { opacity: 0.9; transform: translateY(0) scale(1);      }
  100% { opacity: 0;   transform: translateY(-70vh) scale(0.3); }
}

.winner-overlay__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.winner-overlay__dismiss {
  padding-inline: var(--space-6);
  color: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
}

.winner-overlay__dismiss:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.winner-overlay__remove {
  background: transparent;
  color: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.35);
}

.winner-overlay__remove:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.6);
  color: #ffffff;
}

.winner-overlay__verify {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.5);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  cursor: pointer;
  opacity: 0;
  transition:
    color var(--transition-fast),
    opacity var(--transition-base);
}

.winner-overlay__verify.is-visible {
  opacity: 1;
}

.winner-overlay__verify:hover {
  color: rgba(255, 255, 255, 0.9);
}


/* ═══════════════════════════════════════════════════════════════════════════
   VERIFY PANEL — prove-it.js (Module 10)
   Collapsible cryptographic proof panel inside the winner overlay.
   Appears below the "Verify this result" link when the user clicks it.
   Styled for dark-overlay context (white text on transparent dark card).
   ═══════════════════════════════════════════════════════════════════════════ */

.verify-panel {
  inline-size: 100%;
  text-align: start;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.verify-panel[hidden] { display: none; }

.verify-panel__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--fw-bold);
  color: #ffffff;
  text-align: center;
}

.verify-panel__intro {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  line-height: var(--leading-relaxed);
}

.verify-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-block-end: var(--space-4);
  border-block-end: 1px solid rgba(255, 255, 255, 0.08);
}

.verify-section:last-child {
  padding-block-end: 0;
  border-block-end: none;
}

.verify-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.verify-hash-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.verify-hash {
  font-family: ui-monospace, 'Cascadia Code', 'Menlo', monospace;
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.85);
  word-break: break-all;
  flex: 1 1 0;
  line-height: var(--leading-relaxed);
  user-select: all;
}

.verify-copy-btn {
  flex-shrink: 0;
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  padding-block: var(--space-1);
  padding-inline: var(--space-3);
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  min-block-size: 2rem;
  min-inline-size: 3.5rem;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.verify-copy-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
}

.verify-copy-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.verify-link {
  font-size: var(--text-xs);
  color: rgba(108, 71, 255, 0.9);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  align-self: flex-start;
}

.verify-link:hover {
  color: #ffffff;
}

.verify-steps {
  list-style: decimal;
  padding-inline-start: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.verify-step {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.7);
  line-height: var(--leading-relaxed);
}

.verify-step code {
  font-family: ui-monospace, 'Cascadia Code', 'Menlo', monospace;
  font-size: 0.85em;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.08);
  padding-inline: 0.25em;
  border-radius: 2px;
}

.verify-note {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.55);
  line-height: var(--leading-relaxed);
}


/* ═══════════════════════════════════════════════════════════════════════════
   REDUCED MOTION
   Global blanket override. Celebration.js also checks this at runtime and
   skips GSAP / Lottie / confetti when true.
   ═══════════════════════════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}


/* ═══════════════════════════════════════════════════════════════════════════
   DESKTOP LAYOUT — min-width: 768px
   ═══════════════════════════════════════════════════════════════════════════ */

@media (min-width: 768px) {

  .nav {
    padding-inline: var(--space-8);
  }

  .app {
    padding-inline: var(--space-8);
    padding-block: var(--space-8);
  }

  /* Two-column: animation column grows, list column fixed width. */
  .app__columns {
    flex-direction: row;
    align-items: start;
  }

  .col-animation {
    flex: 1 1 0;
    min-inline-size: 0;
  }

  .col-list {
    flex: 0 0 var(--list-col-width);
    inline-size: var(--list-col-width);
  }

  /* On desktop the picker is a 7-column grid instead of a scroll row. */
  .animation-picker {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    overflow-x: unset;
    scroll-snap-type: unset;
    padding-block-end: 0;
    scrollbar-width: unset;
  }

  .animation-picker__card {
    min-inline-size: unset;
    scroll-snap-align: unset;
  }

  .stage-actions {
    flex-wrap: nowrap;
  }

  /* Leaderboard ad visible; rectangle ad in list column hidden. */
  .ad-slot--leaderboard {
    display: flex;
  }

  .ad-slot--rectangle {
    display: none;
  }
}