/* Blue theme - default */
:root {
  --primary: #1a73e8;
  --primary-dark: #1557b0;
  --bg: #f5f5f5;
  --card-bg: #fff;
  --text: #333;
  --text-light: #999;
  --link: #1a73e8;
  --accent: #e74c3c;
  --border: #eee;
}
header { background: var(--primary) !important; }
header nav a { color: rgba(255,255,255,.9) !important; }
header nav a:hover { color: #ffd700 !important; }
.section-title { border-left-color: var(--primary) !important; }