:root {
      --bg-primary: #ffffff;
      --bg-secondary: #f8fafc;
      --text-primary: #1e293b;
      --text-secondary: #64748b;
      --border: #e2e8f0;
      --blue-600: #2563eb;
      --blue-700: #1d4ed8;
      --blue-800: #1e40af;
      --blue-50: #eff6ff;
      --shadow-sm: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px -1px rgba(0,0,0,0.1);
    }

    ::-webkit-scrollbar { width: 8px; height: 8px; }
    ::-webkit-scrollbar-track { background: #f1f5f9; }
    ::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 6px; }
    ::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

    .card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 12px;
      box-shadow: var(--shadow-sm);
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.5rem 1rem;
      border-radius: 8px;
      background: var(--blue-600);
      color: #ffffff;
      font-weight: 600;
      font-size: 0.875rem;
      border: none;
      cursor: pointer;
      transition: background 0.2s;
    }
    .btn-primary:hover { background: var(--blue-700); }
    html {
        min-height: 100%;
    }
    body {
        background: radial-gradient(circle at 50% 30%, #ffffff 0%, #f4f0ff 35%, #e0f2fe 75%, #eef2ff 100%) !important;
        background-attachment: fixed !important;
        background-size: cover !important;
        min-height: 100vh !important;
    }