:root {
  /* Typography */
  --font-sans: "Manrope", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  /* Colors - Light content area */
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --text: #0f172a;
  --text-2: #1e293b;
  --text-3: #334155;
  --muted: #94a3b8;
  --muted-strong: #64748b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  /* Operational accent */
  --accent: #0f766e;
  --accent-600: #0d5e5f;
  --accent-100: #e6f4f1;
  --accent-50: #f0fdfa;
  --accent-border: #99f6e4;

  /* Primary brand (override per taubane) */
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --primary-700: #1e40af;
  --primary-100: #dbeafe;

  /* Status */
  --success: #16a34a;
  --success-50: #ecfdf5;
  --success-100: #dcfce7;
  --success-border: #bbf7d0;
  --success-700: #047857;
  --warning: #f59e0b;
  --warning-50: #fffbeb;
  --warning-100: #fef3c7;
  --warning-border: #fde68a;
  --warning-700: #92400e;
  --danger: #dc2626;
  --danger-50: #fef2f2;
  --danger-100: #fee2e2;
  --danger-border: #fecaca;
  --danger-700: #b91c1c;
  --info: #0ea5e9;
  --info-50: #eff6ff;
  --info-100: #e0f2fe;
  --info-border: #bfdbfe;
  --info-700: #0369a1;

  /* Sidebar / topbar */
  --nav-bg: #0f172a;
  --nav-surface: #1e293b;
  --nav-surface-2: #0b1220;
  --nav-text: #e2e8f0;
  --nav-muted: #94a3b8;
  --nav-border: #1e293b;

  /* Radius */
  --radius-card: 16px;
  --radius-control: 10px;

  /* Shadow */
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 18px 50px rgba(15, 23, 42, 0.12);
  --shadow-nav: 0 10px 30px rgba(15, 23, 42, 0.28);

  /* Spacing (8px system) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 40px;
  --space-8: 48px;

  /* Layout */
  --sidebar-w: 260px;
  --topbar-h: 60px;
  --content-max: 1200px;
}

:root[data-theme="dark"] {
  --bg: #0b0f17;
  --surface: #121827;
  --surface-2: #0f1420;
  --text: #eef1f7;
  --text-2: #e2e8f0;
  --text-3: #cbd5e1;
  --muted: #a3acc0;
  --muted-strong: #cbd5e1;
  --border: #1e2635;
  --border-strong: #334155;
  --accent-50: #102a2a;
  --accent-100: #153c3a;
  --accent-border: #1f5f58;
  --success-50: #0f2b1c;
  --success-100: #123822;
  --success-border: #1d6b3f;
  --warning-50: #321f0b;
  --warning-100: #42280b;
  --warning-border: #7c4a03;
  --danger-50: #351316;
  --danger-100: #45181c;
  --danger-border: #7f1d1d;
  --info-50: #0b2138;
  --info-100: #102b46;
  --info-border: #1d4ed8;
}