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

:root {
  --bg: #FAFAFA;
  --text: #2C2C2C;
  --accent: #0066ff;
  --border: #ddd;
  
  /* Syntax highlighting colors */
  --keyword: #0066ff;
  --type: #00a4db;
  --string: #00a67e;
  --number: #e5a500;
  --comment: #888;
  --function: #8e44ad;
  --module: #e74c3c;
}

[data-theme="dark"] {
  --bg: #111;
  --text: #F5F5F5;
  --border: #333;
  
  /* Dark mode syntax colors */
  --keyword: #569cd6;
  --type: #4ec9b0;
  --string: #ce9178;
  --number: #b5cea8;
  --comment: #6a9955;
  --function: #dcdcaa;
  --module: #c586c0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  transition: all 0.3s ease;
  overflow-x: hidden;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8rem;
  animation: fadeIn 0.6s ease-out;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  transition: opacity 0.2s;
}

nav a:hover {
  opacity: 0.6;
}

.theme-btn {
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  font-size: 1.4rem;
  padding: 0.5rem 0.6rem;
  line-height: 1;
  transition: opacity 0.2s;
}

.theme-btn:hover {
  opacity: 0.6;
}

/* Version Badge */
.version-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: var(--text);
  color: var(--bg);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  border: 2px solid var(--text);
  position: relative;
  overflow: hidden;
}

.version-badge:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.version-badge.loading {
  pointer-events: none;
}

.version-badge.loading .version-text {
  animation: pulse 1.5s ease-in-out infinite;
}

.version-prefix {
  opacity: 0.7;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.version-text {
  font-weight: 700;
}

.version-badge.loaded {
  animation: fadeIn 0.5s ease-out;
}

/* Hero */
.hero {
  margin-bottom: 8rem;
  display: flex;
  align-items: center;
  gap: 4rem;
}

.hero-content {
  flex: 1;
  animation: slideIn 0.8s ease-out;
}

.mascot-container {
  flex-shrink: 0;
  animation: fadeIn 1s ease-out 0.2s both;
}

.mascot {
  width: 280px;
  height: auto;
  display: block;
}

h1 {
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 2rem;
  letter-spacing: -0.03em;
}

.subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--text);
  opacity: 0.6;
  margin-bottom: 3rem;
  max-width: 600px;
}

.cta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  border: 2px solid var(--text);
  color: var(--text);
  background: none;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn:hover {
  background: var(--text);
  color: var(--bg);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
}

.btn-primary:hover {
  background: none;
  color: var(--text);
}

/* Code */
.code-section {
  margin-bottom: 8rem;
  animation: fadeIn 1s ease-out 0.4s both;
}

.example-tabs {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  background: none;
  border: 2px solid var(--text);
  color: var(--text);
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.tab-btn:hover {
  background: var(--text);
  color: var(--bg);
  transform: translateY(-2px);
}

.tab-btn.active {
  background: var(--text);
  color: var(--bg);
}

.code-wrapper {
  border: 2px solid var(--text);
  padding: 2rem;
  background: var(--bg);
  position: relative;
  transition: all 0.3s ease;
}

.code-content {
  display: none;
  animation: fadeIn 0.4s ease-out;
}

.code-content.active {
  display: block;
}

.code-label {
  position: absolute;
  top: -1rem;
  left: 2rem;
  background: var(--bg);
  padding: 0 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.3s ease;
}

pre {
  overflow-x: auto;
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 0.95rem;
  line-height: 1.6;
}

code {
  color: var(--text);
}

/* Syntax Highlighting */
.keyword { color: var(--keyword); font-weight: 600; }
.type { color: var(--type); }
.string { color: var(--string); }
.number { color: var(--number); }
.comment { color: var(--comment); font-style: italic; }
.function { color: var(--function); }
.module { color: var(--module); }
.operator { color: var(--text); opacity: 0.7; }

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 8rem;
  animation: fadeIn 1s ease-out 0.6s both;
}

.feature {
  transition: transform 0.3s ease;
}

.feature:hover {
  transform: translateY(-5px);
}

.feature h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature p {
  opacity: 0.6;
}

/* Footer */
footer {
  border-top: 2px solid var(--text);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  animation: fadeIn 1s ease-out 0.8s both;
}

.social {
  display: flex;
  gap: 1.5rem;
}

.social a {
  color: var(--text);
  text-decoration: none;
  font-size: 1.25rem;
  transition: all 0.3s ease;
}

.social a:hover {
  opacity: 0.6;
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .container {
    padding: 2rem 1.5rem;
  }

  header {
    margin-bottom: 5rem;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .hero {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }

  .mascot {
    width: 200px;
  }

  nav {
    width: 100%;
    justify-content: space-between;
  }

  h1 {
    font-size: 3rem;
  }

  .subtitle {
    font-size: 1.25rem;
  }

  .cta {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .version-badge {
    width: 100%;
    justify-content: center;
  }

  .code-wrapper {
    padding: 1.5rem;
  }

  .example-tabs {
    gap: 0.5rem;
  }

  .tab-btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    flex: 1;
    min-width: 120px;
  }

  pre {
    font-size: 0.85rem;
  }

  .features {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  footer {
    flex-direction: column;
    text-align: center;
  }
}