:root {
  /* Default to Dark Mode */
  --bg-color: #0d1117;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --accent-primary: #58a6ff;
  --accent-secondary: #bc8cff;
  --border-color: #30363d;
  --card-bg: #161b22;
  --glass-bg: rgba(22, 27, 34, 0.7);
  --header-bg: rgba(13, 17, 23, 0.85);

  /* Dimensions */
  --max-width: 1080px;
  --header-height: 70px;
  --radius: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --glow: 0 0 40px rgba(88, 166, 255, 0.15);

  --code-bg: #0d1117;
  /* Matches github-dark bg */
}

[data-theme="light"] {
  --bg-color: #ffffff;
  --text-primary: #1f2328;
  --text-secondary: #656d76;
  --accent-primary: #0969da;
  --accent-secondary: #8a2be2;
  --border-color: #d0d7de;
  --card-bg: #f6f8fa;
  --glass-bg: rgba(255, 255, 255, 0.8);
  --header-bg: rgba(255, 255, 255, 0.85);

  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --glow: 0 0 40px rgba(9, 105, 218, 0.1);

  --code-bg: #f6f8fa;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
}

/* Background Gradients */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 15% 50%, rgba(88, 166, 255, 0.05), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(188, 140, 255, 0.05), transparent 25%);
  z-index: -1;
}

[data-theme="light"] body::before {
  background-image:
    radial-gradient(circle at 15% 50%, rgba(9, 105, 218, 0.05), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(138, 43, 226, 0.05), transparent 25%);
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

header {
  height: var(--header-height);
  border-bottom: 1px solid var(--border-color);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  transition: background-color 0.3s, border-color 0.3s;
}

header .header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 18px;
  color: white;
  box-shadow: 0 0 15px rgba(88, 166, 255, 0.4);
}

.brand-text {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 16px;
  border-radius: 20px;
  transition: all 0.2s;
  border: 1px solid transparent;
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--glass-bg);
}

/* Theme Toggle Button */
.nav-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  margin-left: 10px;
}

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

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.hero h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  background: linear-gradient(to right, var(--text-primary), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
}

.cta-button {
  display: inline-block;
  background: linear-gradient(90deg, var(--accent-primary), #238636);
  color: white;
  text-decoration: none;
  padding: 12px 32px;
  border-radius: 99px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 20px rgba(35, 134, 54, 0.4);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(35, 134, 54, 0.6);
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: background-color 0.3s, border-color 0.3s;
}

.versions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.version-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 24px;
  border-radius: var(--radius);
  transition: transform 0.2s, border-color 0.2s;
  text-decoration: none;
  display: block;
  color: inherit;
}

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

.version-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  display: block;
}

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

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 99px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent-primary);
  border: 1px solid rgba(88, 166, 255, 0.3);
}

.badge.latest {
  background: rgba(35, 134, 54, 0.15);
  color: #3bb354;
  border-color: rgba(35, 134, 54, 0.3);
}

/* Markdown Styles Override */
.markdown-body {
  background: transparent !important;
  color: var(--text-primary) !important;
  font-family: inherit !important;
  padding: 40px;
}

.markdown-body h1,
.markdown-body h2 {
  border-bottom-color: var(--border-color) !important;
}

.markdown-body pre {
  background-color: var(--code-bg) !important;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.markdown-body code {
  color: var(--accent-primary) !important;
  /* Brighter color for clearer inline code */
  background: var(--code-bg) !important;
}

.markdown-body a {
  color: var(--accent-primary) !important;
}

/* Tables */
.markdown-body table {
  background-color: transparent !important;
  /* Ensure generic bg doesn't override */
  color: var(--text-primary) !important;
}

.markdown-body table tr {
  background-color: var(--card-bg) !important;
  border-top-color: var(--border-color) !important;
}

.markdown-body table tr:nth-child(2n) {
  background-color: var(--glass-bg) !important;
}

.markdown-body table th,
.markdown-body table td {
  border-color: var(--border-color) !important;
  color: var(--text-primary) !important;
}

/* Copy Button Styling */
.code-wrapper {
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  z-index: 10;
  transition: all 0.2s;
}

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

footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  text-align: center;
  color: var(--text-secondary);
  background: var(--header-bg);
  margin-top: 60px;
}

.version-selector-container {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .version-selector-container {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}