* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: Arial, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .login-container {
            background: white;
            border-radius: 10px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.2);
            width: 90%;
            max-width: 400px;
            padding: 40px 30px;
        }
        .logo {
            text-align: center;
            margin-bottom: 30px;
        }
        .logo h1 {
            color: #4361ee;
            margin-bottom: 10px;
            font-size: 24px;
        }
        .logo p {
            color: #666;
            font-size: 14px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #333;
            font-weight: bold;
            font-size: 14px;
        }
        .form-group input {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 16px;
            transition: border-color 0.3s;
        }
        .form-group input:focus {
            outline: none;
            border-color: #4361ee;
            box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
        }
        .btn-login {
            width: 100%;
            padding: 12px;
            background: linear-gradient(135deg, #4361ee 0%, #3a0ca3 100%);
            color: white;
            border: none;
            border-radius: 6px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 10px;
        }
        .btn-login:hover {
            background: linear-gradient(135deg, #3a0ca3 0%, #4361ee 100%);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
        }
        .error-message {
            background: #ffebee;
            color: #c62828;
            padding: 12px;
            border-radius: 6px;
            margin-bottom: 20px;
            text-align: center;
            font-size: 14px;
        }
        .demo-info {
            text-align: center;
            margin-top: 25px;
            padding-top: 20px;
            border-top: 1px solid #eee;
            color: #666;
            font-size: 13px;
        }
        .demo-info p {
            margin-bottom: 5px;
        }
        .demo-account {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 10px;
        }
        .account-type {
            background: #f8f9fa;
            padding: 8px 12px;
            border-radius: 5px;
            font-size: 12px;
        }