@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

:root {
  --brand: #6366f1;
  --brand-dark: #4f46e5;
  --text: #1a1a1a;
  --muted: #666;
  --border: #e5e5e5;
  --bg-alt: #f8f8ff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #818cf8;
    --brand-dark: #a5b4fc;
    --text: #f0f0f0;
    --muted: #9ca3af;
    --border: #2e2e3a;
    --bg-alt: #1a1a2e;
    --card-bg: #16161f;
  }
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: #fff;
}

@media (prefers-color-scheme: dark) {
  body { background: #111118; }
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

/* Header */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 48px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand:hover { color: var(--brand); }

.brand-logo {
  border-radius: 7px;
  display: block;
}

header nav {
  display: flex;
  gap: 20px;
}

header nav a {
  color: var(--muted);
  text-decoration: none !important;
  font-size: 14px;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

header nav a:hover,
header nav a.active {
  color: var(--brand);
  border-bottom-color: var(--brand);
}

/* Typography */
h1 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  color: var(--text);
}

h2 {
  font-size: 20px;
  font-weight: 700;
  margin-top: 44px;
  margin-bottom: 12px;
  color: var(--text);
  padding-left: 12px;
  border-left: 3px solid var(--brand);
}

h3 {
  font-size: 17px;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 10px;
  color: var(--text);
}

p { margin-bottom: 16px; }

ul { margin: 0 0 16px 24px; }
ul li { margin-bottom: 6px; }

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; color: var(--brand-dark); }

code {
  font-family: "SF Mono", "Fira Code", Consolas, monospace;
  font-size: 13px;
  background: var(--bg-alt);
  color: var(--brand-dark);
  padding: 2px 5px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* Table */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 14px;
}

th {
  text-align: left;
  padding: 10px 14px;
  background: var(--bg-alt);
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--brand-dark);
}

td {
  padding: 10px 14px;
  border: 1px solid var(--border);
  vertical-align: top;
}

tr:nth-child(even) td { background: var(--bg-alt); }

/* Meta */
.meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 36px;
}

/* Index page cards */
.home-hero {
  margin-bottom: 40px;
}

.home-hero p {
  color: var(--muted);
  font-size: 17px;
  max-width: 520px;
}

.home-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 8px;
}

.home-links a {
  display: block;
  padding: 20px 24px;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.1s;
  background: var(--card-bg, #fff);
}

.home-links a:hover {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
  transform: translateY(-1px);
  text-decoration: none;
}

.home-links a .title {
  font-weight: 600;
  font-size: 16px;
  color: var(--brand);
}

.home-links a .desc {
  color: var(--muted);
  font-size: 14px;
  margin-top: 4px;
}

/* Responsive */
@media (max-width: 600px) {
  h1 { font-size: 24px; }
  h2 { font-size: 18px; }
  header { flex-direction: column; align-items: flex-start; gap: 12px; }
}