/**
 * VelinStyle Homepage — Component Expo polish layer (1.2.0)
 * Extends home.css with section chrome, mega nav, quality badges, richer labs.
 */

/* Page atmosphere — dual wash + depth (compatible gradient syntax) */
body.expo-body {
  background-color: var(--velin-color-bg);
  background-image:
    radial-gradient(
      ellipse 120% 60% at 10% 0%,
      color-mix(in oklab, var(--velin-color-primary) 14%, transparent),
      transparent 58%
    ),
    radial-gradient(
      ellipse 90% 50% at 100% 0%,
      color-mix(in oklab, var(--velin-color-secondary, var(--velin-color-primary)) 11%, transparent),
      transparent 52%
    ),
    linear-gradient(
      180deg,
      var(--velin-color-bg),
      color-mix(in oklab, var(--velin-color-surface-dim, var(--velin-color-surface)) 55%, var(--velin-color-bg))
    );
  background-attachment: fixed, fixed, scroll;
  background-repeat: no-repeat;
}

/* ─── Simplified mega nav ─── */
.expo-nav {
  gap: var(--velin-space-2);
}

.expo-nav__menu {
  display: none;
  flex: 1;
  align-items: center;
  gap: 0.25rem;
  min-width: 0;
}

@media (min-width: 64rem) {
  .expo-nav__menu { display: flex; }
  .expo-nav__links { display: none !important; }
}

.expo-nav__group {
  position: relative;
}

.expo-nav__group > button {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 2.5rem;
  padding: 0.35rem 0.7rem;
  border: 0;
  border-radius: var(--velin-radius-md);
  background: transparent;
  color: var(--velin-color-text-muted);
  font: inherit;
  font-size: var(--velin-text-sm);
  font-weight: var(--velin-weight-semibold);
  cursor: pointer;
}

.expo-nav__group > button:hover,
.expo-nav__group > button[aria-expanded="true"] {
  color: var(--velin-color-text);
  background: var(--velin-color-surface-dim);
}

.expo-nav__panel {
  position: absolute;
  top: calc(100% + 0.4rem);
  inset-inline-start: 0;
  z-index: 1200;
  min-width: 16rem;
  max-width: min(28rem, 80vw);
  padding: 0.75rem;
  border: 1px solid var(--velin-color-border);
  border-radius: var(--velin-radius-lg);
  background: var(--velin-color-surface);
  box-shadow: var(--velin-shadow-lg, 0 18px 40px rgb(0 0 0 / 0.16));
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 0.25rem 0.75rem;
}

.expo-nav__group > button[aria-expanded="true"] + .expo-nav__panel {
  display: grid;
}

.expo-nav__panel a {
  color: var(--velin-color-text);
  text-decoration: none;
  font-size: var(--velin-text-sm);
  padding: 0.45rem 0.55rem;
  border-radius: var(--velin-radius-md);
}

.expo-nav__panel a:hover {
  background: var(--velin-color-surface-dim);
  color: var(--velin-color-primary);
}

.expo-nav__panel--single {
  grid-template-columns: 1fr;
  min-width: 12rem;
}

.expo-nav__panel[hidden] {
  display: none !important;
}

.expo-nav__search {
  display: none;
  min-width: 12rem;
  max-width: 18rem;
  flex: 1 1 12rem;
}

@media (min-width: 48rem) {
  .expo-nav__search { display: block; }
}

.expo-nav__search .velin-search,
.expo-nav__search .velin-search__field {
  width: 100%;
}

.expo-nav__search .velin-search__input {
  width: 100%;
  min-height: 2.5rem;
  background: color-mix(in oklab, var(--velin-color-surface-dim) 80%, var(--velin-color-surface));
  border: 1px solid var(--velin-color-border);
  color: var(--velin-color-text);
}

.expo-nav__search .velin-search__results {
  z-index: 1400;
  max-height: min(70vh, 24rem);
  overflow: auto;
  background: var(--velin-color-surface);
  border: 1px solid var(--velin-color-border);
  box-shadow: var(--velin-shadow-lg, 0 18px 40px rgb(0 0 0 / 0.2));
}

.expo-nav__menu-btn {
  display: inline-flex;
}

@media (min-width: 64rem) {
  .expo-nav__menu-btn { display: none; }
}

.expo-toc-mobile { display: none !important; }

.expo-site-nav {
  display: grid;
  gap: 0.35rem;
}

.expo-site-nav a {
  display: block;
  padding: 0.55rem 0.65rem;
  border-radius: var(--velin-radius-md);
  color: var(--velin-color-text);
  text-decoration: none;
}

.expo-site-nav a:hover,
.expo-site-nav a:focus-visible {
  background: var(--velin-color-surface-dim);
}

.expo-site-nav .expo-kicker {
  margin: 0.75rem 0 0.25rem;
}

.expo-token-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  width: 100%;
  margin-block-end: 0.35rem;
}

.expo-token-compare {
  display: grid;
  gap: var(--velin-space-4);
}

@media (min-width: 56rem) {
  .expo-token-compare { grid-template-columns: 1.2fr 0.8fr; }
}

.expo-token-surface--control {
  opacity: 0.92;
  border-style: dashed;
}

.expo-carousel-slide {
  padding: var(--velin-space-4);
  background: var(--velin-color-surface-dim);
  border-radius: var(--velin-radius-md);
  min-height: 4.5rem;
}

.expo-bottom-nav-demo {
  margin-top: var(--velin-space-3);
  border: 1px solid var(--velin-color-border);
  border-radius: var(--velin-radius-md);
  overflow: hidden;
}

.expo-case__modes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-block: 0.5rem 0.75rem;
}

.expo-case__media[data-mode="mobile"] img {
  max-width: 14rem;
  margin-inline: auto;
  display: block;
}

.expo-more {
  padding-block: var(--velin-space-4);
}

.expo-axe-list {
  margin: 0.5rem 0 0;
  padding-inline-start: 1.1rem;
  font-size: var(--velin-text-sm);
  color: var(--velin-color-text-muted);
  display: grid;
  gap: 0.35rem;
}

.expo-test-card[data-pass="true"] {
  outline: 1px solid color-mix(in oklab, var(--velin-color-success) 45%, var(--velin-color-border));
}

.expo-test-card[data-pass="false"] {
  outline: 1px solid color-mix(in oklab, var(--velin-color-danger) 45%, var(--velin-color-border));
}

/* ─── Section cards (tokenized stages — keep visual depth) ─── */
.expo-main {
  gap: clamp(2.25rem, 5vw, 4rem);
}

.expo-section {
  --expo-surface-glow: color-mix(in oklab, var(--velin-color-primary) 0%, transparent);
  padding: clamp(1.15rem, 2.8vw, 2rem);
  border: 1px solid color-mix(in oklab, var(--velin-color-border) 85%, var(--velin-color-primary));
  border-radius: var(--velin-radius-xl, 1.25rem);
  background-color: var(--velin-color-surface);
  background-image:
    linear-gradient(
      160deg,
      var(--expo-surface-glow),
      transparent 42%
    ),
    linear-gradient(
      165deg,
      color-mix(in oklab, var(--velin-color-surface) 88%, var(--velin-color-bg)),
      var(--velin-color-surface)
    );
  background-repeat: no-repeat;
  box-shadow:
    var(--velin-shadow-sm, 0 1px 2px rgb(0 0 0 / 0.06)),
    0 14px 36px color-mix(in oklab, var(--velin-color-text) 8%, transparent),
    inset 0 1px 0 color-mix(in oklab, #fff 8%, transparent);
}

.expo-section[data-surface="base"] {
  --expo-surface-glow: color-mix(in oklab, var(--velin-color-primary) 5%, transparent);
}

.expo-section[data-surface="raised"] {
  --expo-surface-glow: color-mix(in oklab, var(--velin-color-info, var(--velin-color-primary)) 9%, transparent);
  box-shadow:
    var(--velin-shadow-md, 0 4px 12px rgb(0 0 0 / 0.1)),
    0 18px 42px color-mix(in oklab, var(--velin-color-text) 10%, transparent),
    inset 0 1px 0 color-mix(in oklab, #fff 10%, transparent);
}

.expo-section[data-surface="feature"] {
  --expo-surface-glow: color-mix(in oklab, var(--velin-color-primary) 14%, transparent);
  border-color: color-mix(in oklab, var(--velin-color-primary) 28%, var(--velin-color-border));
}

.expo-section[data-surface="proof"] {
  --expo-surface-glow: color-mix(in oklab, var(--velin-color-success, var(--velin-color-primary)) 10%, transparent);
  border-color: color-mix(in oklab, var(--velin-color-primary) 24%, var(--velin-color-border));
}

/* Hero is a full-bleed band: no card chrome, only top/bottom hairlines */
.expo-section.expo-hero {
  border-radius: 0;
  border-inline: 0;
  border-block-start: 0;
  border-block-end: 1px solid color-mix(in oklab, var(--velin-color-border) 85%, var(--velin-color-primary));
  background-image:
    linear-gradient(
      160deg,
      color-mix(in oklab, var(--velin-color-primary) 12%, transparent),
      transparent 46%
    ),
    linear-gradient(
      180deg,
      color-mix(in oklab, var(--velin-color-surface) 92%, var(--velin-color-bg)),
      var(--velin-color-bg)
    );
  box-shadow: inset 0 -1px 0 color-mix(in oklab, var(--velin-color-primary) 12%, transparent);
}

.expo-preview,
.expo-variants,
.expo-surface,
.expo-form-panel,
.expo-variant-card,
.expo-anim-tile,
.expo-test-card,
.expo-case,
.expo-compare__pane,
.expo-mini-surface,
.expo-token-surface,
.expo-util-target {
  box-shadow:
    var(--velin-shadow-sm, 0 1px 2px rgb(0 0 0 / 0.08)),
    0 10px 28px color-mix(in oklab, var(--velin-color-text) 6%, transparent);
}

/* Ghost / outline controls stay visible on dark surfaces */
.expo-preview .velin-btn--ghost,
.expo-hero .velin-btn--ghost {
  color: var(--velin-color-text);
  border-color: color-mix(in oklab, var(--velin-color-border) 70%, var(--velin-color-text));
  background: color-mix(in oklab, var(--velin-color-surface) 55%, transparent);
}

.expo-preview .velin-btn--outline,
.expo-hero .velin-btn--outline {
  color: var(--velin-color-text);
  border-color: color-mix(in oklab, var(--velin-color-primary) 55%, var(--velin-color-border));
}

/* Quality strips removed — claims live in Test Center only */
.expo-quality { display: none; }

.expo-measure-note {
  margin: 0 0 var(--velin-space-4);
  font-size: var(--velin-text-sm);
  color: var(--velin-color-text-muted);
}

.expo-measure-note a {
  color: inherit;
  text-underline-offset: 0.15em;
}

.expo-demo-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.35rem;
}

.expo-demo-links a {
  font-size: 0.72rem;
  color: var(--velin-color-primary);
  text-decoration: none;
  border-bottom: 1px dotted color-mix(in oklab, var(--velin-color-primary) 40%, transparent);
}

.expo-demo-links a:hover {
  border-bottom-style: solid;
}

/* Richer animation cards */
.expo-anim-grid {
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}

.expo-anim-tile {
  align-content: start;
  justify-items: stretch;
  text-align: start;
  min-height: 11rem;
  gap: 0.65rem;
  padding: 1rem;
  background: var(--velin-color-surface);
  transition: transform 180ms var(--expo-ease), box-shadow 180ms var(--expo-ease);
}

.expo-anim-tile:hover {
  transform: translateY(-2px);
  box-shadow: var(--velin-shadow-md, 0 8px 20px rgb(0 0 0 / 0.1));
}

.expo-anim-tile strong {
  font-size: var(--velin-text-base);
}

.expo-anim-tile p {
  margin: 0;
  font-size: var(--velin-text-sm);
  color: var(--velin-color-text-muted);
  line-height: 1.35;
}

.expo-anim-tile__stage {
  display: grid;
  place-items: center;
  min-height: 3.5rem;
  padding: 0.65rem;
  border-radius: var(--velin-radius-md);
  border: 1px dashed var(--velin-color-border);
  background: var(--velin-color-bg);
}

/* Token lab enhancements */
.expo-token-surface {
  --expo-accent: var(--velin-color-primary);
  --expo-border-w: 1px;
  --expo-type-scale: 1;
  border-width: var(--expo-border-w);
}

.expo-token-surface .velin-btn--primary {
  background: var(--expo-accent);
  border-color: var(--expo-accent);
}

.expo-token-surface .velin-card__title,
.expo-token-surface .velin-nav__brand {
  font-size: calc(1em * var(--expo-type-scale));
}

.expo-token-surface .velin-card__text,
.expo-token-surface .velin-label,
.expo-token-surface .velin-input {
  font-size: calc(1em * var(--expo-type-scale));
}

.expo-token-readout {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  font-family: var(--velin-font-mono, ui-monospace, monospace);
  font-size: 0.72rem;
  color: var(--velin-color-text-muted);
}

.expo-token-readout code {
  padding: 0.15rem 0.4rem;
  border-radius: var(--velin-radius-sm);
  background: var(--velin-color-surface-dim);
}

/* Test Center */
.expo-test-center__stage {
  border: 1px solid var(--velin-color-border);
  border-radius: var(--velin-radius-lg);
  padding: var(--velin-space-4);
  background: var(--velin-color-surface);
  display: grid;
  gap: var(--velin-space-3);
}

/* Current nav link must stay AAA-readable on dark surfaces */
.expo-test-center__stage .velin-nav__link {
  color: var(--velin-color-text);
}

.expo-test-center__stage .velin-nav__link[aria-current="page"] {
  color: var(--velin-color-text);
  font-weight: var(--velin-weight-bold);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  background: transparent;
}

.expo-test-center__stage .velin-nav__brand {
  color: var(--velin-color-text);
}

.expo-test-center__stage .velin-btn--outline {
  color: var(--velin-color-text);
  border-color: var(--velin-color-border-strong, var(--velin-color-text));
  background: transparent;
}

.expo-test-center__stage .velin-btn--primary {
  /* keep primary fill; ensure label stays on-primary */
  color: var(--velin-color-on-primary, #fff);
}

.expo-measure-note,
.expo-a11y-note {
  color: var(--velin-color-text);
  opacity: 0.92;
}

.expo-measure-note a {
  color: var(--velin-color-primary-text, var(--velin-color-text));
  text-decoration: underline;
}

.expo-test-center__stage {
  min-height: 10rem;
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--velin-color-border) 40%, transparent);
}

.expo-test-center__stage[data-contrast="high"] {
  --velin-color-text: #000;
  --velin-color-bg: #fff;
  --velin-color-surface: #fff;
  --velin-color-border: #000;
  outline: 3px solid #000;
}

.expo-test-center__stage[data-motion="reduce"] * {
  animation: none !important;
  transition: none !important;
}

.expo-test-card[data-pass="true"] {
  background: color-mix(in oklab, var(--velin-color-success) 8%, var(--velin-color-bg));
}

.expo-test-card h3 {
  font-size: var(--velin-text-sm);
  margin: 0;
}

/* Showcase richer cards */
.expo-case__meta-block {
  display: grid;
  gap: 0.35rem;
}

.expo-case__meta-block small {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--velin-color-text-muted);
  font-weight: var(--velin-weight-semibold);
}

/* Docs footer denser */
.expo-links {
  padding-top: 0.35rem;
  border-top: 1px dashed color-mix(in oklab, var(--velin-color-border) 80%, transparent);
}

@media (max-width: 63.99rem) {
  .expo-nav__menu { display: none; }
}