:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a25;
  --text-primary: #e8e8f0;
  --text-secondary: #9090a8;
  --text-muted: #5a5a70;
  --accent-cyan: #00ffd5;
  --accent-purple: #a855f7;
  --accent-orange: #ff6b35;
  --accent-green: #22c55e;
  --accent-red: #ef4444;
  --accent-yellow: #eab308;
  --glow-cyan: rgba(0, 255, 213, 0.15);
  --glow-purple: rgba(168, 85, 247, 0.15);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-display);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

/* Scanline overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
  z-index: 9999;
}

/* Noise texture */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  z-index: 9998;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation Menu */
.nav-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background: rgba(12, 12, 18, 0.98);
  border-right: 1px solid var(--border-subtle);
  z-index: 1001;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  backdrop-filter: blur(20px);
}

.nav-menu.open {
  transform: translateX(0);
}

.nav-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  background: rgba(12, 12, 18, 0.98);
}

.nav-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 8px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--bg-primary);
}

.nav-title {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.nav-close {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.75rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  transition: color 0.2s ease;
  line-height: 1;
}

.nav-close:hover {
  color: var(--text-primary);
}

.nav-list {
  list-style: none;
  padding: 1rem 0;
}

.nav-section-title {
  padding: 1rem 1.5rem 0.5rem;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.nav-link {
  display: block;
  padding: 0.6rem 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  border-left: 2px solid transparent;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
  border-left-color: var(--accent-cyan);
}

.nav-link.active {
  color: var(--accent-cyan);
  background: var(--glow-cyan);
  border-left-color: var(--accent-cyan);
}

/* Menu Toggle Button */
.menu-toggle {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1002;
  background: rgba(18, 18, 26, 0.9);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 0.75rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
}

.menu-toggle:hover {
  color: var(--accent-cyan);
  border-color: rgba(0, 255, 213, 0.3);
  box-shadow: 0 0 20px var(--glow-cyan);
}

/* Overlay when menu is open */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.nav-overlay.visible {
  opacity: 1;
  visibility: visible;
}

/* Adjust search toggle position */
.search-toggle {
  left: 4.5rem;
}

/* Search Bar */
.search-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 2rem;
  transform: translateY(-100%);
  transition: transform 0.3s ease;
}

.search-container.visible {
  transform: translateY(0);
}

.search-wrapper {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 0.875rem 1.25rem 0.875rem 3rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.search-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px var(--glow-cyan);
}

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

.search-shortcut {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  gap: 0.25rem;
}

.shortcut-key {
  padding: 0.25rem 0.5rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  max-height: 400px;
  overflow-y: auto;
  display: none;
}

.search-results.active {
  display: block;
}

.search-result-item {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: background 0.2s ease;
}

.search-result-item:last-child {
  border-bottom: none;
}

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

.search-result-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.search-result-tag {
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  background: var(--glow-cyan);
  color: var(--accent-cyan);
  border-radius: 4px;
  font-family: var(--font-mono);
}

.search-result-excerpt {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.search-result-excerpt mark {
  background: rgba(0, 255, 213, 0.2);
  color: var(--accent-cyan);
  padding: 0.1rem 0.2rem;
  border-radius: 2px;
}

.no-results {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
}

/* Search Toggle Button */
.search-toggle {
  position: fixed;
  top: 1.5rem;
  right: 2rem;
  z-index: 999;
  width: 44px;
  height: 44px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.search-toggle:hover {
  background: var(--bg-tertiary);
  color: var(--accent-cyan);
  border-color: rgba(0, 255, 213, 0.3);
}

/* Hero Section */
.hero {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: 4rem 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--glow-cyan) 0%, transparent 70%);
  opacity: 0.4;
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 2rem;
  animation: fadeSlideUp 0.8s ease-out;
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero h1 {
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 800;
  line-height: 1;
  margin-bottom: 1.5rem;
  animation: fadeSlideUp 0.8s ease-out 0.1s backwards;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 3rem;
  animation: fadeSlideUp 0.8s ease-out 0.2s backwards;
}

.hero-terminal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  overflow: hidden;
  max-width: 600px;
  animation: fadeSlideUp 0.8s ease-out 0.3s backwards;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.03),
    0 20px 50px -20px rgba(0,0,0,0.5),
    0 0 100px -50px var(--glow-cyan);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dot:nth-child(1) { background: #ff5f57; }
.terminal-dot:nth-child(2) { background: #ffbd2e; }
.terminal-dot:nth-child(3) { background: #28ca42; }

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.terminal-line {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.terminal-prompt {
  color: var(--accent-cyan);
}

.terminal-command {
  color: var(--text-primary);
}

.terminal-cursor {
  display: inline-block;
  width: 10px;
  height: 1.2em;
  background: var(--accent-cyan);
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Accordion Styles */
.accordion-container {
  padding: 3rem 0 6rem;
}

.accordion {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.accordion:hover {
  border-color: rgba(0, 255, 213, 0.2);
}

.accordion.active {
  border-color: rgba(0, 255, 213, 0.3);
}

.accordion-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 2rem;
  cursor: pointer;
  user-select: none;
  transition: background 0.2s ease;
}

.accordion-header:hover {
  background: var(--bg-tertiary);
}

.accordion-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--glow-cyan), var(--glow-purple));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.accordion-title-group {
  flex: 1;
}

.accordion-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.accordion-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.accordion-arrow {
  width: 24px;
  height: 24px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.accordion.active .accordion-arrow {
  transform: rotate(180deg);
  color: var(--accent-cyan);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.accordion.active .accordion-content {
  max-height: 3000px;
}

.accordion-body {
  padding: 0 2rem 2rem;
  border-top: 1px solid var(--border-subtle);
}

.accordion-body > *:first-child {
  margin-top: 1.5rem;
}

/* Feature Text */
.feature-text {
  color: var(--text-secondary);
}

/* Hierarchy Table */
.hierarchy-section {
  margin: 2rem 0;
}

.hierarchy-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hierarchy-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 2px;
}

.hierarchy-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.hierarchy-table th {
  text-align: left;
  padding: 0.875rem 1rem;
  background: var(--bg-tertiary);
  color: var(--text-muted);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.7rem;
}

.hierarchy-table th:first-child {
  border-radius: 8px 0 0 0;
}

.hierarchy-table th:last-child {
  border-radius: 0 8px 0 0;
}

.hierarchy-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.hierarchy-table tr:last-child td {
  border-bottom: none;
}

.hierarchy-table tr:last-child td:first-child {
  border-radius: 0 0 0 8px;
}

.hierarchy-table tr:last-child td:last-child {
  border-radius: 0 0 8px 0;
}

.hierarchy-table tbody tr {
  background: var(--bg-secondary);
  transition: background 0.2s ease;
}

.hierarchy-table tbody tr:hover {
  background: var(--bg-tertiary);
}

/* Command Tags */
.command-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: rgba(0, 255, 213, 0.1);
  border: 1px solid rgba(0, 255, 213, 0.2);
  border-radius: 6px;
  color: var(--accent-cyan);
  font-size: 0.8rem;
}

.command-tag.purple {
  background: rgba(168, 85, 247, 0.1);
  border-color: rgba(168, 85, 247, 0.2);
  color: var(--accent-purple);
}

.command-tag.orange {
  background: rgba(255, 107, 53, 0.1);
  border-color: rgba(255, 107, 53, 0.2);
  color: var(--accent-orange);
}

.command-tag.green {
  background: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.2);
  color: var(--accent-green);
}

.command-tag.yellow {
  background: rgba(234, 179, 8, 0.1);
  border-color: rgba(234, 179, 8, 0.2);
  color: var(--accent-yellow);
}

/* Tokens Bar */
.tokens-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.tokens-fill {
  height: 6px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 3px;
  transition: width 0.5s ease;
}

.tokens-value {
  color: var(--text-secondary);
  white-space: nowrap;
}

/* Code Examples */
.code-block {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 1.25rem;
  font-family: var(--font-mono);
  white-space: pre-wrap;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
  overflow-x: auto;
  position: relative;
}

.code-block::before {
  content: attr(data-label);
  position: absolute;
  top: 0;
  right: 1rem;
  background: var(--bg-secondary);
  padding: 0.2rem 0.6rem;
  font-size: 0.6rem;
  color: var(--text-muted);
  border-radius: 0 0 6px 6px;
  letter-spacing: 0.1em;
}

.code-keyword {
  color: var(--accent-orange);
}

.code-string {
  color: var(--accent-green);
}

.code-comment {
  color: var(--text-muted);
}

.code-flag {
  color: var(--accent-purple);
}

/* Usage Grid */
.usage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.usage-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 1.25rem;
}

.usage-card.positive {
  border-color: rgba(34, 197, 94, 0.2);
}

.usage-card.negative {
  border-color: rgba(239, 68, 68, 0.2);
}

.usage-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.usage-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.positive .usage-icon {
  background: rgba(34, 197, 94, 0.15);
  color: var(--accent-green);
}

.negative .usage-icon {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
}

.usage-list {
  list-style: none;
}

.usage-list li {
  padding: 0.4rem 0;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
}

.usage-list li::before {
  content: '→';
  color: var(--text-muted);
  flex-shrink: 0;
}

/* Info Box */
.info-box {
  padding: 1.25rem;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.05), rgba(0, 255, 213, 0.05));
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  margin: 1.5rem 0;
}

.info-box-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.info-box-content {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.info-box-content code {
  background: var(--bg-tertiary);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
}

/* Tip list */
.tip-list {
  list-style: none;
  margin: 1rem 0;
}

.tip-list li {
  padding: 0.6rem 0;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.tip-list li .tip-icon {
  flex-shrink: 0;
  width: 20px;
  text-align: center;
}

/* Highlight for search */
.highlight {
  background: rgba(0, 255, 213, 0.25);
  border-radius: 2px;
  padding: 0 2px;
}

/* Footer */
.footer {
  padding: 4rem 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-logo span {
  color: var(--accent-cyan);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  transition: color 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-link:hover {
  color: var(--accent-cyan);
}

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

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }

  .hero {
    min-height: auto;
    padding: 6rem 0 4rem;
  }

  .accordion-header {
    padding: 1.25rem 1.5rem;
  }

  .accordion-body {
    padding: 0 1.5rem 1.5rem;
  }

  .accordion-icon {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .accordion-title {
    font-size: 1.1rem;
  }

  .hierarchy-table {
    font-size: 0.75rem;
  }

  .hierarchy-table th,
  .hierarchy-table td {
    padding: 0.6rem 0.75rem;
  }

  .tokens-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }

  .search-toggle {
    top: 1rem;
    right: 1rem;
  }

  .search-shortcut {
    display: none;
  }
}

/* Scroll animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}