/* ==========================================================================
   EmojiCopy Modern Design System & Styles
   Ultra-fast, glassmorphism, responsive, dark/light theme
   ========================================================================== */

:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-primary: #0a0d14;
  --bg-secondary: #121622;
  --bg-surface: rgba(22, 27, 40, 0.75);
  --bg-surface-elevated: rgba(30, 38, 56, 0.85);
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --bg-input: rgba(14, 18, 28, 0.8);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --accent-glow: rgba(99, 102, 241, 0.35);
  
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-medium: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(99, 102, 241, 0.4);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 25px var(--accent-glow);
  
  --font-brand: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-emoji: "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji", sans-serif;

  --composer-height: 145px;
  --header-height: 72px;
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-surface: rgba(255, 255, 255, 0.85);
  --bg-surface-elevated: rgba(255, 255, 255, 0.95);
  --bg-card: rgba(0, 0, 0, 0.02);
  --bg-card-hover: rgba(0, 0, 0, 0.05);
  --bg-input: #ffffff;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-medium: rgba(0, 0, 0, 0.14);
  --border-accent: rgba(99, 102, 241, 0.5);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 4px 20px rgba(99, 102, 241, 0.25);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 20%, rgba(236, 72, 153, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(168, 85, 247, 0.06) 0%, transparent 50%);
  background-attachment: fixed;
  overflow-x: hidden;
}

/* App Container */
.app-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 24px 80px 24px;
}

/* Header & Top Bar */
.app-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 24px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.brand-logo-badge {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 4px 14px var(--accent-glow);
  transform-origin: center;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.brand-wrapper:hover .brand-logo-badge {
  transform: scale(1.08) rotate(-4deg);
}

.brand-title {
  font-family: var(--font-brand);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-title .pro-badge {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-primary);
  border: 1px solid var(--border-accent);
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.icon-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
}

.icon-btn:hover {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border-color: var(--border-medium);
  transform: translateY(-1px);
}

.icon-btn.active {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-primary);
  border-color: var(--border-accent);
}

/* ==========================================================================
   Composer Bar (Sticky Buffer Bar)
   ========================================================================== */
.composer-section {
  position: sticky;
  top: 16px;
  z-index: 900;
  margin-bottom: 24px;
}

.composer-card {
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.composer-card:focus-within {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.composer-input-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.composer-input-wrapper {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.composer-input {
  width: 100%;
  height: 52px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0 16px;
  font-family: var(--font-emoji), var(--font-main);
  font-size: 1.45rem;
  color: var(--text-primary);
  outline: none;
  transition: all 0.2s;
}

.composer-input:focus {
  border-color: var(--border-accent);
  background: var(--bg-surface-elevated);
}

.composer-input::placeholder {
  font-size: 0.98rem;
  font-family: var(--font-main);
  color: var(--text-muted);
}

/* Composer Buttons */
.composer-btn-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent-gradient);
  color: #ffffff;
  border: none;
  height: 52px;
  padding: 0 26px;
  border-radius: var(--radius-md);
  font-family: var(--font-brand);
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  box-shadow: 0 4px 18px var(--accent-glow);
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  white-space: nowrap;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.5);
}

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

.btn-secondary {
  height: 52px;
  padding: 0 16px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

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

/* Composer Meta Row */
.composer-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 4px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.composer-meta-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: 6px;
}

.stat-val {
  font-weight: 600;
  color: var(--text-primary);
}

.mode-toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.switch-control {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--bg-card-hover);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  transition: background 0.2s;
}

.switch-control::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background: #ffffff;
  border-radius: 50%;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.switch-checkbox:checked + .switch-control {
  background: var(--accent-primary);
}

.switch-checkbox:checked + .switch-control::after {
  transform: translateX(16px);
}

.switch-checkbox {
  display: none;
}

/* ==========================================================================
   Toolbox Controls (Search, Tone, Size, Categories)
   ========================================================================== */
.toolbox-section {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 24px;
}

.search-and-modifiers-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 14px;
  align-items: center;
}

/* Search Box */
.search-box-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 16px;
  color: var(--text-muted);
  font-size: 1.15rem;
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: 48px;
  padding: 0 44px 0 46px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
}

.search-input:focus {
  border-color: var(--border-accent);
  background: var(--bg-surface-elevated);
  box-shadow: 0 0 15px var(--accent-glow);
}

.search-shortcut-tag {
  position: absolute;
  right: 14px;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 6px;
  border-radius: 4px;
  background: var(--bg-card-hover);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  pointer-events: none;
}

.search-clear-btn {
  position: absolute;
  right: 14px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 4px;
  display: none;
}

.search-clear-btn:hover {
  color: var(--text-primary);
}

/* Skin Tone Selector */
.skin-tone-picker {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 5px 8px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

.skin-tone-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding-left: 4px;
  font-weight: 500;
}

.tone-swatch {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), border-color 0.2s;
  position: relative;
}

.tone-swatch:hover {
  transform: scale(1.15);
}

.tone-swatch.active {
  border-color: #ffffff;
  transform: scale(1.18);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.4);
}

/* Size Selector Segment */
.size-selector {
  display: flex;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 4px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

.size-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.size-btn:hover {
  color: var(--text-primary);
}

.size-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--accent-glow);
}

/* Category Navigation Pills */
.category-nav-wrapper {
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 4px;
}

.category-nav-wrapper::-webkit-scrollbar {
  display: none;
}

.category-nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  min-width: max-content;
}

.cat-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
}

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

.cat-pill.active {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--border-accent);
  color: var(--accent-primary);
  font-weight: 600;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.2);
}

.cat-pill-icon {
  font-family: var(--font-emoji);
  font-size: 1.05rem;
}

/* ==========================================================================
   Emoji Display Grid & Sections
   ========================================================================== */
.emoji-main-view {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.category-section {
  scroll-margin-top: 240px;
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.category-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-brand);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

.category-icon {
  font-family: var(--font-emoji);
}

.category-count {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-card-hover);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* Emoji Grid */
.emoji-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(54px, 1fr));
  gap: 8px;
}

/* Dynamic Grid Sizes */
.emoji-grid.size-sm {
  grid-template-columns: repeat(auto-fill, minmax(44px, 1fr));
  gap: 6px;
}

.emoji-grid.size-md {
  grid-template-columns: repeat(auto-fill, minmax(58px, 1fr));
  gap: 8px;
}

.emoji-grid.size-lg {
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  gap: 10px;
}

/* Individual Emoji Item Button */
.emoji-item {
  position: relative;
  aspect-ratio: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.18s, border-color 0.18s, box-shadow 0.18s;
  outline: none;
}

.emoji-char {
  font-family: var(--font-emoji);
  line-height: 1;
  transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.size-sm .emoji-char { font-size: 1.4rem; }
.size-md .emoji-char { font-size: 1.9rem; }
.size-lg .emoji-char { font-size: 2.6rem; }

.emoji-item:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-accent);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
  transform: translateY(-2px);
  z-index: 5;
}

.emoji-item:hover .emoji-char {
  transform: scale(1.18);
}

.emoji-item:active {
  transform: scale(0.92);
}

/* Favorite Pin on Emoji */
.fav-indicator {
  position: absolute;
  top: 4px;
  right: 4px;
  font-size: 0.65rem;
  color: #fbbf24;
  opacity: 0.9;
}

/* Search No Results State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-surface);
  border: 1px dashed var(--border-medium);
  border-radius: var(--radius-lg);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.empty-state-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ==========================================================================
   Toast Notification & Modal
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: var(--bg-surface-elevated);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-accent);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), 0 0 20px var(--accent-glow);
  padding: 12px 24px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  animation: toastIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.toast.hide {
  animation: toastOut 0.25s ease forwards;
}

.toast-emoji-sample {
  font-family: var(--font-emoji);
  font-size: 1.3rem;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(15px) scale(0.95);
  }
}

/* Emoji Detail Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 28px;
  max-width: 440px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  position: relative;
  transform: scale(0.92);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-backdrop.open .modal-card {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.modal-close-btn:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.modal-emoji-preview {
  text-align: center;
  margin-bottom: 16px;
}

.modal-emoji-char {
  font-family: var(--font-emoji);
  font-size: 5rem;
  line-height: 1;
  display: inline-block;
  filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.25));
}

.modal-emoji-title {
  font-family: var(--font-brand);
  font-size: 1.35rem;
  font-weight: 700;
  margin-top: 8px;
}

.modal-emoji-category {
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-weight: 600;
}

.modal-details-table {
  width: 100%;
  margin: 18px 0;
  font-size: 0.88rem;
  border-collapse: collapse;
}

.modal-details-table td {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-details-table td:first-child {
  color: var(--text-muted);
}

.modal-details-table td:last-child {
  text-align: right;
  font-family: monospace;
  color: var(--text-primary);
}

.modal-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

/* Footer */
.app-footer {
  margin-top: 60px;
  padding-top: 30px;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 900px) {
  .search-and-modifiers-row {
    grid-template-columns: 1fr auto;
  }
  .size-selector {
    display: none;
  }
}

@media (max-width: 640px) {
  .app-container {
    padding: 0 16px 60px 16px;
  }
  
  .composer-section {
    top: 10px;
  }
  
  .composer-card {
    padding: 12px 14px;
    gap: 10px;
  }

  .composer-input {
    height: 46px;
    font-size: 1.25rem;
  }

  .btn-primary {
    height: 46px;
    padding: 0 16px;
    font-size: 0.95rem;
  }

  .btn-secondary {
    height: 46px;
    padding: 0 12px;
  }

  .search-and-modifiers-row {
    grid-template-columns: 1fr;
  }

  .skin-tone-picker {
    justify-content: space-between;
  }

  .brand-subtitle {
    display: none;
  }
}

/* ==========================================================================
   Language Switcher & Multilingual UI
   ========================================================================== */
.lang-switcher-dropdown {
  position: relative;
  display: inline-block;
}

.lang-switcher-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(10px);
}

.lang-switcher-btn:hover,
.lang-switcher-btn[aria-expanded="true"] {
  border-color: var(--accent-primary);
  background: var(--bg-card);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.lang-flag {
  font-size: 1.1rem;
  line-height: 1;
}

.lang-code {
  letter-spacing: 0.05em;
}

.lang-chevron {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform 0.2s;
}

.lang-switcher-btn[aria-expanded="true"] .lang-chevron {
  transform: rotate(180deg);
}

.lang-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  list-style: none;
  padding: 6px;
  margin: 0;
  display: none;
  z-index: 1000;
  backdrop-filter: blur(16px);
  animation: fadeInDown 0.18s ease-out;
}

.lang-dropdown-menu.show {
  display: block;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.lang-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.15s;
}

.lang-menu-item:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.lang-menu-item.active {
  background: rgba(108, 92, 231, 0.15);
  color: var(--accent-primary);
  font-weight: 600;
}

.lang-menu-flag {
  font-size: 1.15rem;
}

.lang-menu-name {
  flex: 1;
}

.lang-check {
  font-size: 0.85rem;
  color: var(--accent-primary);
}

/* ==========================================================================
   Rich SEO Content & FAQ Section
   ========================================================================== */
.seo-content-section {
  margin-top: 60px;
  margin-bottom: 30px;
}

.seo-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.seo-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.seo-intro-desc {
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.65;
  margin-bottom: 32px;
  max-width: 800px;
}

.seo-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.seo-feature-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  transition: transform 0.2s, border-color 0.2s;
}

.seo-feature-box:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
}

.seo-feature-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.seo-feature-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* FAQ Accordion */
.seo-faq-wrapper {
  border-top: 1px solid var(--border-subtle);
  padding-top: 36px;
}

.seo-faq-main-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-accordion-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item[open] {
  border-color: var(--accent-primary);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.faq-chevron {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: transform 0.2s;
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
  color: var(--accent-primary);
}

.faq-answer {
  padding: 0 20px 18px 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Footer Language Navigation */
.footer-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}

.footer-lang-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
}

.footer-lang-label {
  color: var(--text-muted);
}

.footer-lang-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-lang-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  font-weight: 500;
  transition: all 0.15s;
}

.footer-lang-link:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.footer-lang-link.active {
  background: rgba(108, 92, 231, 0.15);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  font-weight: 600;
}

.copyright-line {
  color: var(--text-muted);
  font-size: 0.85rem;
}