/* Shared theme variables — light by default, dark via data-theme="dark" */
:root, [data-theme="light"] {
  --bg: #fafafa;
  --bg-alt: #f1f5f9;
  --surface: #ffffff;
  --border: #e5e7eb;
  --border2: #d1d5db;
  --text: #111827;
  --text2: #6b7280;
  --text3: #6b7280;
  --accent: #6366f1;
  --accent2: #818cf8;
  --accent-bg: #eef2ff;
  --code-bg: #f1f5f9;
  --code-text: #334155;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --warn: #92400e;
  --warn-bg: #fef3c7;
  --warn-border: #f59e0b;
  --card-shadow: 0 1px 3px rgba(0,0,0,0.06);
  --hero-gradient: linear-gradient(135deg, #6366f1, #a855f7);
}

[data-theme="dark"] {
  --bg: #0a0e1a;
  --bg-alt: #131827;
  --surface: #131827;
  --border: #1e2640;
  --border2: #2a3456;
  --text: #e8edf7;
  --text2: #8b96b4;
  --text3: #5a6484;
  --accent: #818cf8;
  --accent2: #a5b4fc;
  --accent-bg: rgba(99,102,241,0.12);
  --code-bg: #1e2640;
  --code-text: #c8d2e6;
  --danger: #f87171;
  --danger-bg: rgba(239,68,68,0.12);
  --warn: #fbbf24;
  --warn-bg: rgba(245,158,11,0.12);
  --warn-border: #f59e0b;
  --card-shadow: 0 1px 3px rgba(0,0,0,0.3);
  --hero-gradient: linear-gradient(135deg, #6366f1, #7c3aed);
}

/* Base resets */
body {
  font-family: 'Plus Jakarta Sans', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s, color 0.2s;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: 'JetBrains Mono', monospace; font-size: 13px; background: var(--code-bg); color: var(--code-text); padding: 2px 6px; border-radius: 4px; }
pre { background: var(--code-bg); color: var(--code-text); }

/* Shared nav */
.nav { max-width: 1100px; margin: 0 auto; padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-size: 20px; font-weight: 800; color: var(--text); letter-spacing: -0.5px; text-decoration: none; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 24px; align-items: center; font-size: 14px; font-weight: 500; }
.nav-links a { color: var(--text2); text-decoration: none; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-cta { background: var(--accent); color: #fff !important; padding: 8px 18px; border-radius: 6px; font-weight: 600; font-size: 13px; }
.theme-toggle { background: none; border: 1px solid var(--border); border-radius: 6px; padding: 4px 10px; cursor: pointer; font-size: 14px; line-height: 1; }

/* Shared footer */
.footer { max-width: 1100px; margin: 0 auto; padding: 32px 24px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; font-size: 13px; color: var(--text3); box-sizing: border-box; }
.footer a { color: var(--text3); text-decoration: none; }
.footer a:hover { color: var(--text); }
.footer-links { display: flex; gap: 24px; }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--card-shadow); transition: border-color 0.15s; }
.card:hover { border-color: var(--accent); }

@media(max-width:640px) {
  .nav-links a:not(.nav-cta):not(.theme-toggle) { display: none; }
  .nav-links { gap: 12px; }
  .footer { flex-direction: column; text-align: center; padding: 24px 16px; }
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 12px 16px; width: 100%; }
}

/* Prevent horizontal overflow on all pages */
html, body { overflow-x: hidden; }