/* 学院蓝 — 资料库主视觉 */
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-soft: #dbeafe;
  --accent: #7c3aed;
  --success: #059669;
  --warning: #d97706;

  --bg: #f4f6fb;
  --bg-elevated: #ffffff;
  --bg-sidebar: #eef2ff;
  --bg-code: #1e293b;
  --bg-hero: linear-gradient(135deg, #eff6ff 0%, #f8fafc 45%, #eef2ff 100%);

  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-on-primary: #ffffff;

  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(37, 99, 235, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.1);

  --radius: 14px;
  --radius-sm: 8px;
  --font-display: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', Consolas, monospace;

  --nav-height: 64px;
  --sidebar-width: 280px;
  --content-max: 820px;
  --inline-code-bg: #f1f5f9;
  --inline-code-fg: #be185d;
  --scrollbar-track: #eef2f7;
  --scrollbar-thumb: #cbd5e1;
  --scrollbar-thumb-hover: #94a3b8;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --primary: #60a5fa;
  --primary-hover: #93c5fd;
  --primary-soft: rgba(96, 165, 250, 0.15);
  --bg: #0b1220;
  --bg-elevated: #111827;
  --bg-sidebar: #0f172a;
  --bg-code: #020617;
  --bg-hero: linear-gradient(135deg, #0b1220 0%, #111827 50%, #0f172a 100%);
  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #1e293b;
  --border-strong: #334155;
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --inline-code-bg: #1e293b;
  --inline-code-fg: #f0abfc;
  --scrollbar-track: #0f172a;
  --scrollbar-thumb: #334155;
  --scrollbar-thumb-hover: #475569;
}

html[data-theme="light"] {
  color-scheme: light;
  --scrollbar-track: #eef2f7;
  --scrollbar-thumb: #cbd5e1;
  --scrollbar-thumb-hover: #94a3b8;
}