:root, [data-theme="light"] {
  --bg: #f5f5f8;
  --surface: #ffffff;
  --surface-hover: #f0f0f5;
  --border: #e2e2ea;
  --border-light: #d0d0dc;
  --text: #1a1a2e;
  --text-dim: #6b6b80;
  --text-muted: #9999aa;
  --accent: #6c5ce7;
  --accent-glow: rgba(108, 92, 231, 0.1);
  --green: #00b37a;
  --green-dim: rgba(0, 179, 122, 0.1);
  --red: #e04040;
  --red-dim: rgba(224, 64, 64, 0.08);
  --orange: #e08b20;
  --orange-dim: rgba(224, 139, 32, 0.1);
  --blue: #2b8fd6;
  --blue-dim: rgba(43, 143, 214, 0.1);
  --purple: #7c5ce7;
  --purple-dim: rgba(124, 92, 231, 0.1);
  --card-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

[data-theme="dark"] {
  --bg: #0a0a0f;
  --surface: #12121a;
  --surface-hover: #1a1a26;
  --border: #1e1e2e;
  --border-light: #2a2a3e;
  --text: #e4e4ef;
  --text-dim: #8888a0;
  --text-muted: #55556a;
  --accent: #6c5ce7;
  --accent-glow: rgba(108, 92, 231, 0.15);
  --green: #00d68f;
  --green-dim: rgba(0, 214, 143, 0.12);
  --red: #ff6b6b;
  --red-dim: rgba(255, 107, 107, 0.12);
  --orange: #ffa94d;
  --orange-dim: rgba(255, 169, 77, 0.12);
  --blue: #4dabf7;
  --blue-dim: rgba(77, 171, 247, 0.12);
  --purple: #b197fc;
  --purple-dim: rgba(177, 151, 252, 0.12);
  --card-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

/* Theme toggle button */
.theme-toggle {
  width: 32px; height: 32px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text-dim); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.15s; font-size: 16px; padding: 0;
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }

/* Fix header/nav for light mode */
[data-theme="light"] .header {
  background: rgba(245, 245, 248, 0.9);
}
[data-theme="light"] .nav-links a {
  color: var(--text-dim);
  border-color: var(--border);
}