:root {
            --admin-primary: #1e293b;
            --admin-accent: #3b82f6;
            --bg-gradient: linear-gradient(135deg, #f1f5f9 0%, #cbd5e1 100%);
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background: var(--bg-gradient);
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0;
            color: #1e293b;
        }

        .login-card {
            background: rgba(255, 255, 255, 0.95);
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
            width: 100%;
            max-width: 400px;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        h2 {
            margin-top: 0;
            margin-bottom: 0.5rem;
            font-size: 1.5rem;
            text-align: center;
            color: var(--admin-primary);
        }

        .subtitle {
            text-align: center;
            color: #64748b;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }

        .form-group {
            margin-bottom: 1.25rem;
        }

        label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: #475569;
        }

        select, input[type="password"] {
            width: 100%;
            padding: 0.75rem 1rem;
            border-radius: 10px;
            border: 1.5px solid #e2e8f0;
            background: white;
            font-size: 1rem;
            transition: all 0.2s ease;
            box-sizing: border-box;
            outline: none;
        }

        select:focus, input:focus {
            border-color: var(--admin-accent);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }

        button {
            width: 100%;
            padding: 0.8rem;
            background: var(--admin-primary);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 1rem;
        }

        button:hover {
            background: #0f172a;
            transform: translateY(-1px);
        }

        .back-link {
            display: block;
            text-align: center;
            margin-top: 1.5rem;
            text-decoration: none;
            color: #64748b;
            font-size: 0.85rem;
            transition: color 0.2s;
        }

        .back-link:hover {
            color: var(--admin-accent);
        }