/* ============================================
   emoji-site — Design System
   Premium dark-mode emoji reference
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors — Dark Mode (default) */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a28;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-glass-border: rgba(255, 255, 255, 0.1);

  --text-primary: #f0f0f5;
  --text-secondary: #9090a8;
  --text-tertiary: #606078;
  --text-accent: #a78bfa;

  --accent-primary: #8b5cf6;
  --accent-secondary: #6d28d9;
  --accent-glow: rgba(139, 92, 246, 0.3);
  --accent-gradient: linear-gradient(135deg, #8b5cf6, #ec4899);

  --success: #34d399;
  --success-bg: rgba(52, 211, 153, 0.15);

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.12);

  /* Sizing */
  --container-max: 1280px;
  --container-narrow: 960px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--accent-glow);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}

/* --- Light Mode --- */
@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #f8f8fc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0f0f8;
    --bg-card: rgba(0, 0, 0, 0.03);
    --bg-card-hover: rgba(0, 0, 0, 0.06);
    --bg-glass: rgba(255, 255, 255, 0.8);
    --bg-glass-border: rgba(0, 0, 0, 0.08);

    --text-primary: #1a1a2e;
    --text-secondary: #64648a;
    --text-tertiary: #9090a8;
    --text-accent: #7c3aed;

    --accent-primary: #7c3aed;
    --accent-secondary: #5b21b6;
    --accent-glow: rgba(124, 58, 237, 0.2);

    --success-bg: rgba(52, 211, 153, 0.12);

    --border-subtle: rgba(0, 0, 0, 0.05);
    --border-medium: rgba(0, 0, 0, 0.1);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.15);
  }
}

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

/* --- Background Ambiance --- */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 20% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(236, 72, 153, 0.06) 0%, transparent 50%),
              radial-gradient(ellipse at 50% 50%, rgba(59, 130, 246, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  animation: ambiance 20s ease-in-out infinite alternate;
}

@keyframes ambiance {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-2%, -1%) scale(1.05); }
}

/* --- Layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* --- Header / Hero --- */
.hero {
  text-align: center;
  padding: 80px 0 48px;
}

.hero__logo {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  line-height: 1.1;
}

.hero__tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  font-weight: 400;
  max-width: 500px;
  margin: 0 auto 40px;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 40px;
}

.hero__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.hero__stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.hero__stat-label {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* --- Search --- */
.search {
  position: relative;
  max-width: 560px;
  margin: 0 auto 48px;
}

.search__icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-tertiary);
  pointer-events: none;
  transition: color var(--duration-normal) var(--ease-out);
}

.search__input {
  width: 100%;
  padding: 16px 20px 16px 52px;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 400;
  color: var(--text-primary);
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  outline: none;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-sm);
}

.search__input::placeholder {
  color: var(--text-tertiary);
}

.search__input:focus {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow), var(--shadow-md);
  background: var(--bg-card-hover);
}

.search__input:focus ~ .search__icon {
  color: var(--accent-primary);
}

.search__count {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-weight: 500;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.search__count.visible {
  opacity: 1;
}

/* --- Category Pills --- */
.categories {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  padding: 0 16px;
}

.category-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  user-select: none;
  white-space: nowrap;
}

.category-pill:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-medium);
  transform: translateY(-1px);
}

.category-pill.active {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
  box-shadow: 0 2px 12px var(--accent-glow);
}

.category-pill__icon {
  font-size: 1.1em;
}

/* --- Emoji Grid --- */
.emoji-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 8px;
  margin-bottom: 64px;
}

.emoji-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px 8px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  min-height: 100px;
}

.emoji-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
  border-radius: inherit;
}

.emoji-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-md);
}

.emoji-card:hover::before {
  opacity: 0.06;
}

.emoji-card__char {
  font-size: 2.2rem;
  line-height: 1;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
  transition: transform var(--duration-normal) var(--ease-spring);
}

.emoji-card:hover .emoji-card__char {
  transform: scale(1.2);
}

.emoji-card__name {
  font-size: 0.65rem;
  color: var(--text-tertiary);
  text-align: center;
  line-height: 1.3;
  position: relative;
  z-index: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  max-width: 100%;
}

/* Copy indicator on cards */
.emoji-card__copied {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--success-bg);
  border-radius: inherit;
  opacity: 0;
  pointer-events: none;
  z-index: 2;
  transition: opacity var(--duration-fast);
}

.emoji-card__copied.show {
  opacity: 1;
}

.emoji-card__copied-text {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--success);
}

/* --- Group Section --- */
.group-section {
  margin-bottom: 56px;
}

.group-section__title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  padding-left: 4px;
}

.group-section__subtitle {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 20px;
  padding-left: 4px;
}

.subgroup-section {
  margin-bottom: 32px;
}

.subgroup-section__title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
  padding-left: 4px;
  text-transform: capitalize;
}

/* --- Emoji Detail Page --- */
.emoji-detail {
  padding: 60px 0 80px;
}

.emoji-detail__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  transition: all var(--duration-normal) var(--ease-out);
}

.emoji-detail__back:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
}

.emoji-detail__hero {
  text-align: center;
  margin-bottom: 48px;
}

.emoji-detail__char {
  font-size: 8rem;
  line-height: 1;
  margin-bottom: 24px;
  display: inline-block;
  animation: emojiEntrance 0.6s var(--ease-spring);
}

@keyframes emojiEntrance {
  0% { transform: scale(0.5) rotate(-10deg); opacity: 0; }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

.emoji-detail__name {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.emoji-detail__version {
  font-size: 0.9rem;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}

/* Copy button */
.copy-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent-gradient);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: 0 4px 16px var(--accent-glow);
  position: relative;
  overflow: hidden;
}

.copy-button:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 6px 24px var(--accent-glow), var(--shadow-lg);
}

.copy-button:active {
  transform: translateY(0) scale(0.98);
}

.copy-button.copied {
  background: var(--success);
  box-shadow: 0 4px 16px rgba(52, 211, 153, 0.3);
}

.copy-button__icon {
  width: 18px;
  height: 18px;
}

/* Info Cards */
.emoji-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 48px 0;
}

.info-card {
  padding: 20px;
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.info-card__label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.info-card__value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-all;
}

.info-card__value code {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.9em;
  background: var(--bg-card);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* Skin Tone Picker */
.skin-tones {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin: 32px 0;
  padding: 16px;
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.skin-tone-btn {
  font-size: 2rem;
  background: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  padding: 8px;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  line-height: 1;
}

.skin-tone-btn:hover {
  background: var(--bg-card-hover);
  transform: scale(1.15);
}

.skin-tone-btn.active {
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* Related Emojis */
.related {
  margin-top: 64px;
}

.related__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.breadcrumbs a {
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.breadcrumbs a:hover {
  color: var(--accent-primary);
}

.breadcrumbs__sep {
  opacity: 0.4;
}

/* --- Toast Notification --- */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 12px 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--success);
  z-index: 1000;
  opacity: 0;
  transition: all var(--duration-slow) var(--ease-spring);
  pointer-events: none;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 48px 24px;
  border-top: 1px solid var(--border-subtle);
  margin-top: 64px;
}

.footer__text {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  line-height: 1.8;
}

.footer__link {
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.footer__link:hover {
  color: var(--accent-primary);
}

/* --- No Results --- */
.no-results {
  text-align: center;
  padding: 80px 24px;
  display: none;
}

.no-results.show {
  display: block;
}

.no-results__emoji {
  font-size: 4rem;
  margin-bottom: 16px;
}

.no-results__text {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.no-results__hint {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

/* --- Scroll Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Group Page --- */
.group-header {
  text-align: center;
  padding: 60px 0 40px;
}

.group-header__icon {
  font-size: 4rem;
  margin-bottom: 16px;
}

.group-header__title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.group-header__count {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero {
    padding: 48px 0 32px;
  }

  .hero__logo {
    font-size: 2.5rem;
  }

  .hero__tagline {
    font-size: 1rem;
  }

  .hero__stats {
    gap: 20px;
  }

  .emoji-grid {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 6px;
  }

  .emoji-card {
    padding: 12px 6px 10px;
    min-height: 80px;
  }

  .emoji-card__char {
    font-size: 1.8rem;
  }

  .emoji-card__name {
    font-size: 0.6rem;
  }

  .emoji-detail__char {
    font-size: 5rem;
  }

  .emoji-detail__name {
    font-size: 1.5rem;
  }

  .categories {
    gap: 6px;
  }

  .category-pill {
    padding: 6px 12px;
    font-size: 0.8rem;
  }

  .search__input {
    padding: 14px 18px 14px 48px;
    font-size: 0.95rem;
  }

  .skin-tones {
    gap: 8px;
    flex-wrap: wrap;
  }

  .skin-tone-btn {
    font-size: 1.6rem;
    padding: 6px;
  }
}

@media (max-width: 480px) {
  .emoji-grid {
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  }

  .hero__stats {
    flex-direction: column;
    gap: 12px;
  }

  .emoji-info {
    grid-template-columns: 1fr;
  }
}

/* --- Loading State --- */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 0;
}

.loading__spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-subtle);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Keyboard Shortcut Hint --- */
.search__hint {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  pointer-events: none;
  opacity: 0.5;
  transition: opacity var(--duration-normal);
}

.search__input:focus ~ .search__hint {
  opacity: 0;
}

.kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 6px;
  font-size: 0.7rem;
  font-family: inherit;
  font-weight: 600;
  color: var(--text-tertiary);
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: 6px;
}

/* --- Adoption UI --- */
.emoji-card.adopted {
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
}

.emoji-card__adopted {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--accent-primary);
  color: white;
  font-size: 0.6rem;
  padding: 4px;
  text-align: center;
  border-bottom-left-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
  opacity: 0.9;
}

.adopt-action-container {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.adopt-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #34d399, #10b981);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
  text-decoration: none;
}

.adopt-btn:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 6px 24px rgba(16, 185, 129, 0.4), var(--shadow-lg);
}

.adopted-badge {
  font-size: 1.1rem;
  color: var(--text-primary);
  background: var(--bg-glass);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--accent-primary);
  box-shadow: 0 0 10px var(--accent-glow);
}

.view-pet-btn {
  font-size: 0.9rem;
  color: var(--accent-primary);
  text-decoration: underline;
  transition: color 0.2s;
}
.view-pet-btn:hover {
  color: var(--accent-secondary);
}

/* --- Top Bar & Toggle --- */
.top-bar {
  display: flex;
  justify-content: flex-end;
  padding: 16px 0;
}

.toggle-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toggle-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-card);
  border: 1px solid var(--border-medium);
  transition: .4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-secondary);
  transition: .4s;
}

input:checked + .slider {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

input:checked + .slider:before {
  background-color: white;
  transform: translateX(20px);
}

.slider.round {
  border-radius: 24px;
}

.slider.round:before {
  border-radius: 50%;
}

/* --- OS Versions --- */
.os-versions-section {
  margin: 48px 0;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.os-versions-section h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  text-align: center;
}

.os-grid {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.os-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  min-width: 120px;
  transition: transform var(--duration-fast);
}

.os-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-medium);
}

.os-card img {
  width: 72px;
  height: 72px;
  object-fit: contain;
}

.os-card span {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}