/* ============================================
   HowToTypeAnything - Enhanced Static Site Styles
   Clean, Modern, User-Friendly Design
   ============================================ */

/* CSS Variables */
:root {
  /* Colors - Modern Dark Theme (Default) */
  --color-bg: #0a0c10;
  --color-bg-elevated: #12151c;
  --color-bg-card: #181c26;
  --color-bg-card-hover: #1e232f;
  --color-border: #2a3142;
  --color-border-subtle: #1f2433;
  
  --color-text: #f0f2f5;
  --color-text-secondary: #a0a8b8;
  --color-text-muted: #6a7386;
  
  --color-primary: #4f8fff;
  --color-primary-hover: #3a7beb;
  --color-primary-glow: rgba(79, 143, 255, 0.15);
  --color-primary-text: #ffffff;
  
  --color-accent: #a855f7;
  --color-accent-glow: rgba(168, 85, 247, 0.15);
  --color-success: #10b981;
  --color-warning: #f59e0b;
  
  /* Gradient backgrounds */
  --gradient-hero: linear-gradient(135deg, #12151c 0%, #0a0c10 50%, #12151c 100%);
  --gradient-card: linear-gradient(145deg, #1e232f 0%, #181c26 100%);
  --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(79, 143, 255, 0.08) 0%, transparent 60%);
}

/* Light Mode Theme */
.light-mode {
  --color-bg: #f8fafc;
  --color-bg-elevated: #ffffff;
  --color-bg-card: #ffffff;
  --color-bg-card-hover: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-subtle: #f1f5f9;
  
  --color-text: #1e293b;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-glow: rgba(59, 130, 246, 0.1);
  
  --color-accent: #8b5cf6;
  --color-accent-glow: rgba(139, 92, 246, 0.1);
  --color-success: #10b981;
  --color-warning: #f59e0b;
  
  --gradient-hero: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f8fafc 100%);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
  --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(59, 130, 246, 0.05) 0%, transparent 60%);
}

:root {
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Container */
  --container-max: 1200px;
  --header-height: 68px;
  
  /* 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(--color-primary-glow);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--spacing-md);
  background: var(--color-primary);
  color: var(--color-primary-text);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 1000;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.skip-link:focus {
  top: var(--spacing-md);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Focus States */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

/* ============================================
   Ad Containers (Raptive)
   Raptive will inject ads into these containers on the live domain.
   ============================================ */
.ad-container {
  padding: var(--spacing-lg) 0;
}

.ad-container:has(.ad-slot:empty) {
  display: none;
}

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

.ad-below-hero {
  margin-top: calc(-1 * var(--spacing-lg));
}

.ad-between-sections {
  padding: var(--spacing-xl) 0;
}

.ad-above-footer {
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  border-top: 1px solid var(--color-border-subtle);
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 12, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
  height: var(--header-height);
}

.light-mode .site-header {
  background: rgba(248, 250, 252, 0.85);
}

/* Theme Toggle Button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--color-bg-card-hover);
  color: var(--color-text);
  border-color: var(--color-primary);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.theme-toggle .icon-moon {
  display: none;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--spacing-lg);
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.85;
}

.logo-img {
  height: 46px;
  width: auto;
  object-fit: contain;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav-list {
  display: none;
  list-style: none;
  gap: var(--spacing-xs);
}

@media (min-width: 1050px) {
  .nav-list {
    display: flex;
  }
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-sm) 0.75rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text);
  background-color: var(--color-bg-card);
}

.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-glow);
}

.nav-search-btn,
.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-search-btn:hover,
.mobile-menu-btn:hover {
  color: var(--color-text);
  background-color: var(--color-bg-card);
  border-color: var(--color-border-subtle);
}

@media (min-width: 950px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* Mobile Menu */
.nav-list.open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   Hero Section - Enhanced
   ============================================ */
.hero {
  position: relative;
  z-index: 50;
  padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  text-align: center;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: var(--gradient-glow);
  pointer-events: none;
}

.hero h1 {
  position: relative;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.hero-intro {
  position: relative;
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto var(--spacing-2xl);
  line-height: 1.7;
}

/* Search - Enhanced */
.search-wrapper {
  position: relative;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.search-input {
  width: 100%;
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: 1.0625rem;
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
}

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

.search-input:focus {
  border-color: var(--color-primary);
  background-color: var(--color-bg-elevated);
  box-shadow: var(--shadow-glow);
}

/* Inline Search Results */
.search-results {
  position: absolute;
  top: calc(100% + var(--spacing-sm));
  left: 0;
  right: 0;
  max-height: 400px;
  overflow-y: auto;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 9999;
}

.search-results[hidden] {
  display: none;
}

.search-results-list {
  list-style: none;
  padding: var(--spacing-sm);
}

.search-result-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--spacing-md);
  align-items: center;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.search-result-item:hover {
  background-color: var(--color-bg-elevated);
}

.search-result-item + .search-result-item {
  border-top: 1px solid var(--color-border-subtle);
}

.search-result-symbol {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  font-size: 1.5rem;
  background: var(--color-primary-glow);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.search-result-info {
  min-width: 0;
}

.search-result-name {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-xs) 0;
  letter-spacing: 0.01em;
  text-align: left;
}

.search-result-shortcuts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  font-size: 0.8125rem;
}

.search-result-shortcut {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
}

.search-result-shortcut-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  font-weight: 600;
}

.search-result-shortcut-value {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text);
}

.search-result-copy {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--color-primary-text);
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b7be8 100%);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.search-result-copy:hover {
  background: linear-gradient(135deg, var(--color-primary-hover) 0%, #2d6ad4 100%);
  transform: translateY(-1px);
}

.search-result-copy:active {
  transform: translateY(0);
}

.search-no-results {
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--color-text-secondary);
}

.search-no-results p {
  margin-bottom: var(--spacing-sm);
}

.search-no-results a {
  color: var(--color-primary);
  text-decoration: none;
}

.search-no-results a:hover {
  text-decoration: underline;
}

@media (max-width: 640px) {
  .search-result-item {
    grid-template-columns: auto 1fr;
    gap: var(--spacing-sm);
  }
  
  .search-result-copy {
    grid-column: 1 / -1;
    width: 100%;
  }
  
  .search-result-symbol {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
  }
}

/* Example Chips - Scrolling Marquee */
.example-chips-container {
  position: relative;
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.example-chips-track {
  display: flex;
  gap: var(--spacing-sm);
  animation: scroll-chips 25s linear infinite;
  width: max-content;
}

.example-chips-container:hover .example-chips-track {
  animation-play-state: paused;
}

@keyframes scroll-chips {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.chip {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.875rem;
  font-family: inherit;
  font-weight: 500;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.chip:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
  background-color: var(--color-primary-glow);
}

/* Hero Buttons - Enhanced */
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
}

/* Quick Copy in Hero */
.hero-quick-copy {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-top: var(--spacing-xl);
}

.hero-quick-copy-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  text-align: left;
}

.hero-quick-copy-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

.hero-quick-copy-link {
  font-size: 0.8125rem;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.hero-quick-copy-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* Buttons - Enhanced */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  min-height: 52px;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  text-decoration: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.btn-primary {
  color: var(--color-primary-text);
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b7be8 100%);
  border-color: var(--color-primary);
  box-shadow: 0 4px 20px rgba(79, 143, 255, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-hover) 0%, #2d6ad4 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(79, 143, 255, 0.4);
}

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

.btn-secondary:hover {
  background-color: var(--color-bg-card-hover);
  border-color: var(--color-text-muted);
  transform: translateY(-2px);
}

/* ============================================
   Sections - Enhanced
   ============================================ */
.section {
  padding: var(--spacing-4xl) 0;
  position: relative;
  z-index: 1;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-sm);
}

.section-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-fast);
}

.section-link:hover {
  gap: var(--spacing-sm);
}

.section-link::after {
  content: '\2192';
}

/* Divider between sections */
.section + .section {
  border-top: 1px solid var(--color-border-subtle);
}

/* ============================================
   Card Grid - Enhanced
   ============================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.card-grid-2 {
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.card-grid-small {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

.card-grid-3 {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

/* Section intro text */
.section-intro {
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
  line-height: 1.6;
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
  text-align: center;
}

/* Tool Cards - Enhanced for 6-card grid */
.tool-card {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-xl);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-normal);
  min-height: 220px;
}

.tool-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.tool-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--spacing-sm);
}

.tool-card-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0 0 var(--spacing-md);
}

.tool-card-features {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--spacing-lg);
  flex-grow: 1;
}

.tool-card-features li {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding: var(--spacing-xs) 0;
  padding-left: 1.25rem;
  position: relative;
}

.tool-card-features li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 0.75rem;
}

.tool-card-btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
  background-color: var(--color-primary-glow);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-fast);
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.card {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-xl);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
  background: var(--color-primary-glow);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.card:hover .card-icon {
  background: rgba(79, 143, 255, 0.25);
  transform: scale(1.05);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Small Category Cards - Enhanced */
.card-small {
  flex-direction: row;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
}

.card-small::before {
  display: none;
}

.card-symbol {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  font-size: 1.5rem;
  flex-shrink: 0;
  color: var(--color-primary);
  background: var(--color-primary-glow);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.card-small:hover .card-symbol {
  background: rgba(79, 143, 255, 0.25);
}

.card-label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

/* Hidden state for filtering */
.filterable.hidden {
  display: none;
}

/* ============================================
   Most Copied Symbols Grid - Enhanced
   ============================================ */
.symbol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: var(--spacing-md);
}

@media (min-width: 640px) {
  .symbol-grid {
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  }
}

.symbol-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80px;
  padding: var(--spacing-md);
  font-family: inherit;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  overflow: visible;
}

.symbol-btn-char {
  font-size: 2rem;
  color: var(--color-text);
  line-height: 1;
}

.symbol-btn-name {
  font-size: 0.625rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
  text-align: center;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.symbol-btn:hover {
  background-color: var(--color-bg-card-hover);
  border-color: var(--color-primary);
  transform: scale(1.08);
  z-index: 10;
  box-shadow: var(--shadow-md);
}

.symbol-btn:active {
  transform: scale(1.02);
}

/* Copied Feedback - Enhanced */
.copied-feedback {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary-text);
  background: linear-gradient(135deg, var(--color-success), #059669);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  animation: fadeInOut 1.2s ease forwards;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.copied-feedback::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--color-success);
}

@keyframes fadeInOut {
  0% { opacity: 0; transform: translateX(-50%) translateY(6px); }
  15% { opacity: 1; transform: translateX(-50%) translateY(0); }
  85% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-6px); }
}

/* ============================================
   Guides List - Enhanced
   ============================================ */
.guides-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-sm);
  list-style: none;
}

.guides-grid {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 900px) {
  .guides-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .guides-grid {
    grid-template-columns: 1fr;
  }
}

.guide-item {
  padding: 0;
}

.guide-link {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-text);
  text-decoration: none;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-weight: 500;
}

.guide-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background-color: var(--color-primary-glow);
  padding-left: calc(var(--spacing-lg) + 4px);
}

.guide-link::before {
  content: '\2192';
  margin-right: var(--spacing-md);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.guide-link:hover::before {
  color: var(--color-primary);
}

.guides-note {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.guides-note a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.guides-note a:hover {
  text-decoration: underline;
}

/* ============================================
   Footer - Enhanced
   ============================================ */
.site-footer {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border-subtle);
  text-align: center;
}

.footer-tagline,
.footer-copyright {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  margin-left: auto;
  margin-right: auto;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md) var(--spacing-xl);
}

.footer-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

/* ============================================
   Modal - Enhanced
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
}

.modal-overlay[hidden] {
  display: none;
}

.modal {
  width: 100%;
  max-width: 420px;
  padding: var(--spacing-2xl);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.modal-title {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.modal-instructions {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.modal-instructions kbd {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.modal-symbol-input {
  width: 100%;
  padding: var(--spacing-lg);
  font-size: 2.5rem;
  text-align: center;
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-xl);
}

.modal-symbol-input:focus {
  border-color: var(--color-primary);
}

.modal-close {
  width: 100%;
}

/* ============================================
   Tool Pages - Enhanced Styles
   ============================================ */
.page-header {
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  background: var(--gradient-hero);
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: var(--gradient-glow);
  pointer-events: none;
}

.page-header h1 {
  position: relative;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

.page-intro {
  position: relative;
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  max-width: 720px;
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

/* Category Tabs - Enhanced */
.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-sm);
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.category-tab {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.9375rem;
  font-family: inherit;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.category-tab:hover {
  color: var(--color-text);
  background-color: var(--color-bg-elevated);
}

.category-tab.active {
  color: var(--color-primary-text);
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b7be8 100%);
  box-shadow: 0 2px 8px rgba(79, 143, 255, 0.3);
}

/* Symbol Grid with Labels - Enhanced */
.symbol-keyboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: var(--spacing-md);
}

.symbol-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  padding: var(--spacing-md);
  font-family: inherit;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  overflow: visible;
}

.symbol-card:hover {
  background-color: var(--color-bg-card-hover);
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  z-index: 10;
}

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

.symbol-card-char {
  font-size: 2rem;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  line-height: 1;
}

.symbol-card-name {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.4;
  max-width: 100%;
}

/* Alt Code Results - Enhanced */
.alt-code-results {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.alt-code-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.alt-code-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.alt-code-symbol {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  font-size: 2.25rem;
  background: var(--color-primary-glow);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  grid-row: span 2;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.alt-code-symbol:hover {
  border-color: var(--color-primary);
  background-color: rgba(79, 143, 255, 0.2);
  transform: scale(1.05);
}

.alt-code-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  align-self: end;
}

.alt-code-details {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm) var(--spacing-xl);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.alt-code-details dt {
  font-weight: 500;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.alt-code-details dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
}

.alt-code-details dl {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

/* No results message */
.no-results {
  text-align: center;
  padding: var(--spacing-4xl);
  color: var(--color-text-secondary);
}

.no-results-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.3;
}

/* Error state */
.error-message {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-secondary);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 767px) {
  .hero {
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .card-grid,
  .card-grid-3 {
    grid-template-columns: 1fr;
  }
  
  .card-grid-small {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .tool-card {
    min-height: auto;
  }
  
  .symbol-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
  }
  
  .symbol-btn {
    min-height: 70px;
  }
  
  .symbol-btn-char {
    font-size: 1.75rem;
  }
  
  .symbol-keyboard-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .alt-code-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .alt-code-symbol {
    grid-row: auto;
    margin: 0 auto var(--spacing-md);
  }
  
  .alt-code-details {
    justify-content: center;
  }
}

/* ============================================
   Symbol Keyboard Page Styles
   ============================================ */

/* Page Hero */
.page-hero {
  background: var(--gradient-hero);
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  text-align: center;
  position: relative;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-glow);
  pointer-events: none;
}

.page-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

.page-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.6;
}

/* Symbol Search */
.symbol-search-wrapper {
  position: relative;
  max-width: 500px;
  margin: 0 auto;
}

.symbol-search-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) 3rem;
  font-size: 1rem;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.symbol-search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

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

.symbol-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* Category Filter */
.category-filter-section {
  background-color: var(--color-bg-elevated);
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border-subtle);
  position: sticky;
  top: var(--header-height);
  z-index: 90;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

.category-filter-section.filter-hidden {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-100%);
  pointer-events: none;
}

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

.category-tab {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.category-tab:hover {
  color: var(--color-text);
  background-color: var(--color-bg-card);
  border-color: var(--color-border);
}

.category-tab.active {
  color: var(--color-primary-text);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Symbol Count */
.symbol-count-section {
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.symbol-count {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  text-align: center;
}

/* Popular Symbols Section */
.popular-symbols-section {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border-subtle);
}

.popular-symbols-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.popular-symbols-subtitle {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.popular-symbols-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: var(--spacing-sm);
}

.symbol-key-popular {
  background-color: var(--color-bg);
}

/* All Symbols Title */
.all-symbols-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

/* Symbol Grid */
.symbol-grid-section {
  padding: var(--spacing-2xl) 0 var(--spacing-3xl);
}

.symbols-heading {
  margin-bottom: var(--spacing-lg);
}

.symbol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: var(--spacing-sm);
}

.symbol-key {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-xs);
  min-height: 80px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  gap: var(--spacing-xs);
}

.symbol-key:hover {
  background-color: var(--color-bg-card-hover);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.symbol-key:active {
  opacity: 0.9;
}

.symbol-key.copied {
  background-color: var(--color-success);
  border-color: var(--color-success);
}

.symbol-key.copied .symbol-key-char,
.symbol-key.copied .symbol-key-name {
  color: white;
}

.symbol-key-char {
  font-size: 1.5rem;
  color: var(--color-text);
  line-height: 1;
}

.symbol-key-name {
  font-size: 0.625rem;
  color: var(--color-text-secondary);
  text-align: center;
  line-height: 1.2;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* Symbol Tooltip */
.symbol-tooltip {
  position: absolute;
  z-index: 1000;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-lg);
  transform: translateX(-50%);
  pointer-events: none;
  min-width: 200px;
  max-width: 280px;
}

.symbol-tooltip::before {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent;
  border-bottom-color: var(--color-bg-card);
}

.tooltip-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border-subtle);
}

.tooltip-symbol {
  font-size: 1.5rem;
  color: var(--color-text);
}

.tooltip-name {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.tooltip-shortcuts {
  margin-bottom: var(--spacing-sm);
}

.tooltip-shortcut {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  padding: 2px 0;
}

.tooltip-shortcut strong {
  color: var(--color-text);
  font-weight: 600;
}

.tooltip-hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  padding-top: var(--spacing-xs);
  border-top: 1px solid var(--color-border-subtle);
}

/* No Results */
.no-results {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-lg);
  color: var(--color-text-muted);
}

/* How To Section */
.how-to-section {
  background-color: var(--color-bg-elevated);
  padding: var(--spacing-3xl) 0;
  border-top: 1px solid var(--color-border-subtle);
}

.how-to-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.how-to-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
}

.how-to-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  font-size: 1.25rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.how-to-card h3 {
  font-size: 1.125rem;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.how-to-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* SEO Content Section */
.seo-content-section {
  padding: var(--spacing-3xl) 0;
  border-top: 1px solid var(--color-border-subtle);
}

.seo-content {
  max-width: 800px;
  margin: var(--spacing-xl) auto 0;
}

.seo-content p {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.seo-content ul {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.seo-content li {
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
}

.seo-content li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.seo-content strong {
  color: var(--color-text);
}

/* Error message */
.error-message {
  text-align: center;
  color: var(--color-warning);
  padding: var(--spacing-xl);
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--color-success);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 500;
  font-size: 0.9375rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 1000;
}

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

.toast-icon {
  font-size: 1.125rem;
}

/* Symbol Keyboard Responsive */
@media (max-width: 768px) {
  .page-hero {
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
  }
  
  .page-subtitle {
    font-size: 1rem;
  }
  
  .category-filter-section {
    padding: var(--spacing-md) 0;
  }
  
  .category-tabs {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: var(--spacing-sm);
    -webkit-overflow-scrolling: touch;
  }
  
  .category-tabs::-webkit-scrollbar {
    display: none;
  }
  
  .symbol-grid,
  .popular-symbols-grid {
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    gap: var(--spacing-xs);
  }
  
  .symbol-key {
    min-height: 70px;
    padding: var(--spacing-xs);
  }
  
  .symbol-key-char {
    font-size: 1.25rem;
  }
  
  .symbol-key-name {
    font-size: 0.5625rem;
    -webkit-line-clamp: 1;
  }
  
  .how-to-grid {
    grid-template-columns: 1fr;
  }
}

/* Symbol Categories Grid */
.symbol-categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.symbol-category-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.symbol-category-item:hover {
  border-color: var(--color-border);
  transform: translateY(-2px);
}

.symbol-category-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.symbol-category-item p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* FAQ Section */
.faq-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-elevated);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
}

.faq-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}

.faq-item p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Responsive FAQ */
@media (max-width: 768px) {
  .symbol-categories-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }
  
  .faq-section {
    padding: var(--spacing-2xl) 0;
  }
}

/* ============================================
   Static Popular Sections (SEO)
   ============================================ */

.popular-accents-section,
.popular-symbols-section {
  margin: var(--spacing-2xl) 0;
  padding: var(--spacing-xl);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
}

.popular-accents-title,
.popular-symbols-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
  text-align: center;
}

.popular-accents-intro,
.popular-symbols-intro {
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.popular-accents-grid,
.popular-symbols-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.popular-accent-group,
.popular-symbol-group {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border-subtle);
}

.popular-accent-group h3,
.popular-symbol-group h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid var(--color-border-subtle);
}

.popular-accent-items,
.popular-symbol-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.popular-accent-btn,
.popular-symbol-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 1.25rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.popular-accent-btn:hover,
.popular-symbol-btn:hover {
  border-color: var(--color-primary);
}

.popular-accent-btn.copied,
.popular-symbol-btn.copied {
  background: var(--color-success);
  border-color: var(--color-success);
  color: white;
}

@media (max-width: 900px) {
  .popular-accents-grid,
  .popular-symbols-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .popular-accents-grid,
  .popular-symbols-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Related Tools Section
   ============================================ */

.related-tools-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border-subtle);
}

.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
  max-width: 800px;
  margin: 0 auto;
}

.related-tool-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-normal);
}

.related-tool-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.related-tool-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-md);
  background: var(--color-primary-glow);
  border-radius: var(--radius-lg);
  color: var(--color-primary);
}

.related-tool-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.related-tool-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

@media (max-width: 600px) {
  .related-tools-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Alt Code Finder Page Styles
   ============================================ */

/* Alt Code Search */
.alt-code-search-wrapper {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.alt-code-search-input {
  width: 100%;
  padding: var(--spacing-lg) var(--spacing-xl) var(--spacing-lg) 3.5rem;
  font-size: 1.0625rem;
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
}

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

.alt-code-search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-bg-elevated);
  box-shadow: var(--shadow-glow);
}

.alt-code-search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* Sticky Search Bar - appears below filter tabs when scrolling */
.sticky-search-bar {
  display: none;
  max-width: 500px;
  margin: 0 auto;
  padding-top: var(--spacing-sm);
}

.sticky-search-bar.visible {
  display: block;
}

.sticky-search-inner {
  position: relative;
}

.sticky-search-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-sm) 2.75rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.sticky-search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-glow);
}

.sticky-search-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* Alt Code Results Section */
.alt-code-results-section {
  padding: var(--spacing-2xl) 0 var(--spacing-3xl);
}

.alt-code-results-title {
  margin-bottom: var(--spacing-xs);
}

.alt-code-results-count {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-xl);
}

/* Alt Code Results Grid - 2 columns on desktop, 1 on mobile */
.alt-code-results {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

/* Alt Code Card */
.alt-code-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--spacing-md);
  align-items: start;
  padding: var(--spacing-lg);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.alt-code-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.alt-code-card.no-alt-code {
  border-left: 3px solid var(--color-warning);
}

/* Symbol Button */
.alt-code-symbol-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--color-primary-glow);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.alt-code-symbol-btn:hover {
  border-color: var(--color-primary);
  background-color: rgba(79, 143, 255, 0.2);
}

.alt-code-symbol-char {
  font-size: 2rem;
  color: var(--color-text);
  line-height: 1;
}

.alt-code-symbol-hint {
  font-size: 0.625rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.alt-code-symbol-btn:hover .alt-code-symbol-hint {
  opacity: 1;
}

/* Alt Code Info */
.alt-code-info {
  min-width: 0;
}

.alt-code-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--spacing-sm);
  line-height: 1.3;
}

.alt-code-methods {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs) var(--spacing-md);
}

.alt-code-method {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.alt-code-method.primary .method-value {
  color: var(--color-primary);
  font-weight: 600;
}

.alt-code-method.unavailable .method-value {
  color: var(--color-warning);
  font-style: italic;
}

.method-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  font-weight: 600;
}

.method-value {
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--color-text);
  word-break: break-word;
}

/* Copy Button */
.alt-code-copy-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  min-width: 70px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b7be8 100%);
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-primary-text);
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
  align-self: center;
}

.alt-code-copy-btn:hover {
  background: linear-gradient(135deg, var(--color-primary-hover) 0%, #2d6ad4 100%);
  box-shadow: 0 4px 12px rgba(79, 143, 255, 0.3);
}

/* Popular Alt Codes Grid */
.popular-altcodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.popular-altcode-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-fast);
}

.popular-altcode-item:hover {
  border-color: var(--color-primary);
}

.popular-altcode-symbol {
  font-size: 2rem;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.popular-altcode-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.popular-altcode-code {
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--color-primary);
  background: var(--color-primary-glow);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
}

/* Alt Code Steps */
.alt-code-steps {
  list-style: none;
  counter-reset: step-counter;
  margin: var(--spacing-lg) 0;
  padding: 0;
}

.alt-code-steps li {
  counter-increment: step-counter;
  padding: var(--spacing-sm) 0;
  padding-left: 2.5rem;
  position: relative;
  color: var(--color-text-secondary);
}

.alt-code-steps li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  width: 1.75rem;
  height: 1.75rem;
  background: var(--color-primary);
  color: var(--color-primary-text);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
}

/* Related Tools Grid */
.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.related-tool-card {
  display: block;
  padding: var(--spacing-xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.related-tool-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.related-tool-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--spacing-sm);
}

.related-tool-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* Alt Code Finder Responsive */
@media (max-width: 768px) {
  .alt-code-results {
    grid-template-columns: 1fr;
  }
  
  .alt-code-card {
    grid-template-columns: auto 1fr auto;
  }
  
  .alt-code-symbol-btn {
    width: 60px;
    height: 60px;
  }
  
  .alt-code-symbol-char {
    font-size: 1.5rem;
  }
  
  .popular-altcodes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
}

@media (max-width: 480px) {
  
  .popular-altcodes-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
  }
  
  .popular-altcode-item {
    padding: var(--spacing-md);
  }
  
  .popular-altcode-symbol {
    font-size: 1.5rem;
  }
  
  .popular-altcode-name {
    font-size: 0.75rem;
  }
  
  .popular-altcode-code {
    font-size: 0.6875rem;
  }
}

/* ============================================
   Accent Keyboard Page Styles
   ============================================ */

/* Accent Hero */
.accent-hero {
  background: var(--gradient-hero);
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  position: relative;
}

.accent-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-glow);
  pointer-events: none;
}

/* Accent Builder */
.accent-builder {
  position: relative;
  max-width: 1150px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.accent-builder-inner {
  display: grid;
  gap: var(--spacing-xl);
}

.builder-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.builder-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Loading Skeleton */
@keyframes skeleton-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.7; }
}

.loading-skeleton {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  justify-content: center;
}

.skeleton-btn {
  width: 44px;
  height: 44px;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-accent {
  width: 68px;
  height: 68px;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

/* Letter Selector */
.letter-selector {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  justify-content: center;
}

.letter-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-size: 1.125rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.letter-btn.selected {
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b7be8 100%);
  color: var(--color-primary-text);
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(79, 143, 255, 0.3);
}

/* Accent Selector */
.accent-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.accent-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 8px;
  min-width: 68px;
  font-family: inherit;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.accent-btn.selected {
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b7be8 100%);
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(79, 143, 255, 0.3);
}

.accent-btn.selected .accent-symbol,
.accent-btn.selected .accent-name {
  color: var(--color-primary-text);
}

.accent-btn:disabled,
.accent-btn.unavailable {
  opacity: 0.4;
  cursor: not-allowed;
  background-color: var(--color-bg);
  border-color: var(--color-border-subtle);
}

.accent-btn:disabled:hover,
.accent-btn.unavailable:hover {
  background-color: var(--color-bg);
  border-color: var(--color-border-subtle);
  transform: none;
}

.accent-btn[data-tooltip] {
  position: relative;
}

.accent-btn[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-bg-card);
  color: var(--color-text-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  pointer-events: none;
  z-index: 10;
  border: 1px solid var(--color-border-subtle);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.accent-btn[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
}

.accent-symbol {
  font-size: 1.25rem;
  color: var(--color-text);
  line-height: 1;
}

.accent-name {
  font-size: 0.5625rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

/* Result Container */
.builder-result {
  border-top: 1px solid var(--color-border-subtle);
  padding-top: var(--spacing-xl);
}

.result-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.result-preview {
  display: flex;
  gap: var(--spacing-xl);
}

.result-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.result-name {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  max-width: 120px;
  text-align: left;
}

.result-actions {
  display: flex;
  flex-direction: row;
  gap: var(--spacing-md);
  justify-content: center;
}

.result-char {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  font-size: 3rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.result-char.unavailable {
  color: var(--color-text-muted);
  font-size: 2rem;
}

.result-char-upper {
  border-color: var(--color-primary);
}

.result-char-lower {
  border-color: var(--color-accent);
}

.result-copy-btn {
  min-width: 160px;
}

.result-copy-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.result-copy-btn.copied {
  background: var(--color-success) !important;
  border-color: var(--color-success) !important;
}

/* Copy Button Wrapper with Feedback */
.copy-btn-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.copy-feedback {
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-success);
  opacity: 0;
  transition: opacity 0.2s ease;
  white-space: nowrap;
}

.copy-feedback.visible {
  opacity: 1;
}

/* Typing Methods */
.typing-methods {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
}

.typing-methods-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.typing-methods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
}

.typing-method {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background-color: var(--color-bg-card);
  border-radius: var(--radius-sm);
}

.typing-method .method-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  font-weight: 600;
}

.typing-method .method-value {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text);
  word-break: break-word;
}

/* Quick Copy Section */
.quick-copy-section {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-bg);
}

/* Language Tabs */
.filter-controls {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.filter-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding-left: var(--spacing-xs);
}

.language-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: flex-start;
  padding: var(--spacing-sm);
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.letter-filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  justify-content: flex-start;
  padding: var(--spacing-sm);
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.letter-filter-tab {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.letter-filter-tab:hover {
  color: var(--color-text);
  background-color: var(--color-bg-elevated);
}

.letter-filter-tab.active {
  background: var(--gradient-primary);
  color: white;
}

.letter-filter-tab[data-letter="all"] {
  width: auto;
  padding: 0 var(--spacing-md);
}

.language-tab {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.language-tab:hover {
  color: var(--color-text);
  background-color: var(--color-bg-elevated);
}

.language-tab.active {
  color: var(--color-primary-text);
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b7be8 100%);
  box-shadow: 0 2px 8px rgba(79, 143, 255, 0.3);
}

/* Accent Keyboard Grid */
/* Character Collector */
.char-collector {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.char-collector-input {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1.25rem;
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
}

.char-collector-input:focus {
  border-color: var(--color-primary);
}

.char-collector-input::placeholder {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.char-collector-btn-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.char-collector-btn-wrapper .copy-feedback {
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-success);
  opacity: 0;
  transition: opacity 0.2s ease;
  white-space: nowrap;
}

.char-collector-btn-wrapper .copy-feedback.visible {
  opacity: 1;
}

.char-collector-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.875rem;
  font-weight: 500;
  font-family: inherit;
  color: white;
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.char-collector-btn:hover {
  background-color: var(--color-primary-hover);
}

.char-collector-clear {
  background-color: var(--color-bg-card);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.char-collector-clear:hover {
  background-color: var(--color-bg-card-hover);
}

.accent-keyboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-2xl);
}

.accent-letter-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.accent-letter-wrapper .copy-feedback {
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-success);
  opacity: 0;
  transition: opacity 0.2s ease;
  white-space: nowrap;
  z-index: 5;
}

.accent-letter-wrapper .copy-feedback.visible {
  opacity: 1;
}

.accent-letter-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  width: 100%;
  min-height: 72px;
  padding: var(--spacing-sm) var(--spacing-xs);
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.accent-letter-symbol {
  font-size: 1.5rem;
  line-height: 1;
}

.accent-letter-name {
  font-size: 0.625rem;
  color: var(--color-text-muted);
  text-transform: lowercase;
  line-height: 1.2;
  text-align: center;
}

.accent-letter-btn:hover {
  background-color: var(--color-bg-card-hover);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.accent-letter-btn:hover .accent-letter-name {
  color: var(--color-text-secondary);
}

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

.accent-letter-btn.copied {
  background-color: var(--color-success);
  border-color: var(--color-success);
}

.accent-letter-btn.copied .accent-letter-symbol,
.accent-letter-btn.copied .accent-letter-name {
  color: white;
}

/* Special Characters */
.special-chars-section {
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border-subtle);
}

.special-chars-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.special-chars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.special-char-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  font-family: inherit;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
}

.special-char-btn:hover {
  background-color: var(--color-bg-card-hover);
  border-color: var(--color-primary);
}

.special-char-btn.copied {
  background-color: var(--color-success);
  border-color: var(--color-success);
}

.special-char-btn.copied .special-char-symbol,
.special-char-btn.copied .special-char-name {
  color: white;
}

.special-char-symbol {
  font-size: 1.5rem;
  color: var(--color-text);
  min-width: 40px;
  text-align: center;
}

.special-char-name {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.3;
}


/* Accent Reference Section */
.accent-reference-section {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border-subtle);
}

.accent-reference-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.accent-ref-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-fast);
}

.accent-ref-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.ref-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.ref-symbol {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  font-size: 1.5rem;
  background: var(--color-primary-glow);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.ref-name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.ref-examples {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.ref-example {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 1.25rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

.ref-description {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Accent Keyboard Responsive */
@media (max-width: 768px) {
  .accent-builder {
    padding: var(--spacing-lg);
  }
  
  .letter-btn {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }
  
  .accent-btn {
    min-width: 56px;
    padding: 4px 6px;
  }
  
  .accent-symbol {
    font-size: 1.1rem;
  }
  
  .accent-name {
    font-size: 0.5rem;
  }
  
  .result-char {
    width: 64px;
    height: 64px;
    font-size: 2.5rem;
  }
  
  .result-actions {
    flex-direction: row;
    width: 100%;
    justify-content: center;
  }
  
  .result-copy-btn {
    min-width: auto;
    flex: 1;
    max-width: 160px;
    font-size: 0.8125rem;
    padding: var(--spacing-sm);
  }
  
  .typing-methods-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .language-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
  }
  
  .language-tabs::-webkit-scrollbar {
    display: none;
  }
  
  .letter-filter-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .letter-filter-tabs::-webkit-scrollbar {
    display: none;
  }
  
  .letter-filter-tab {
    width: 32px;
    height: 32px;
    font-size: 0.8125rem;
    flex-shrink: 0;
  }
  
  .char-collector {
    flex-wrap: wrap;
  }
  
  .char-collector-input {
    width: 100%;
    font-size: 1rem;
  }
  
  .char-collector-btn {
    flex: 1;
  }
  
  .accent-keyboard-grid {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: var(--spacing-xs);
  }
  
  .accent-letter-btn {
    min-height: 64px;
    padding: var(--spacing-xs);
  }
  
  .accent-letter-symbol {
    font-size: 1.25rem;
  }
  
  .accent-letter-name {
    font-size: 0.5625rem;
  }
  
  .special-chars-grid {
    grid-template-columns: 1fr;
  }
  
  .accent-reference-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .result-container {
    flex-direction: column;
  }
  
  .result-preview {
    width: 100%;
    justify-content: center;
  }
  
  .result-actions {
    width: 100%;
    flex-direction: column;
  }
  
  .result-copy-btn {
    max-width: none;
    width: 100%;
  }
}

/* Print styles */
@media print {
  .site-header,
  .site-footer,
  .search-wrapper,
  .example-chips-container,
  .hero-buttons,
  .category-tabs,
  .sticky-search-bar {
    display: none;
  }
  
  .hero {
    background: none;
    padding: var(--spacing-md) 0;
  }
  
  .section {
    padding: var(--spacing-md) 0;
  }
}