body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #3498db, #2980b9);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #333;
        }
        
        .login-container {
            max-width: 400px;
            width: 90%;
            padding: 30px;
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }
        
        .login-header {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .login-header h2 {
            color: #3498db;
            margin-bottom: 10px;
            font-weight: 700;
        }
        
        .login-logo {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, #3498db, #2980b9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 2rem;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #2c3e50;
        }
        
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        
        .form-control:focus {
            border-color: #3498db;
            outline: none;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        
        .btn {
            padding: 12px 20px;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: all 0.3s ease;
            width: 100%;
        }
        
        .btn-primary {
            background-color: #3498db;
            color: white;
        }
        
        .btn-primary:hover {
            background-color: #2980b9;
            transform: translateY(-2px);
        }
        
        .btn-outline-primary {
            background-color: transparent;
            color: #3498db;
            border: 2px solid #3498db;
        }
        
        .btn-outline-primary:hover {
            background-color: #3498db;
            color: white;
        }
        
        .btn-outline-warning {
            background-color: transparent;
            color: #f39c12;
            border: 2px solid #f39c12;
        }
        
        .btn-outline-warning:hover {
            background-color: #f39c12;
            color: white;
        }
        
        .btn-warning {
            background-color: #f39c12;
            color: white;
        }
        
        .btn-warning:hover {
            background-color: #e67e22;
        }
        
        .user-type-selector {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
        }
        
        .user-type-btn {
            flex: 1;
            padding: 10px;
            text-align: center;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .user-type-btn.active {
            background-color: #3498db;
            color: white;
        }
        
        .user-type-btn:not(.active) {
            background-color: #f8f9fa;
            color: #6c757d;
            border: 2px solid #dee2e6;
        }
        
        .login-footer {
            text-align: center;
            margin-top: 20px;
            color: #7f8c8d;
            font-size: 0.9rem;
        }
        
        .notification {
            position: fixed;
            top: 20px;
            right: 20px;
            padding: 15px 20px;
            border-radius: 8px;
            color: white;
            font-weight: 600;
            z-index: 2000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            opacity: 0;
            transform: translateY(-20px);
            transition: opacity 0.3s, transform 0.3s;
            max-width: 300px;
        }
        
        .notification.show {
            opacity: 1;
            transform: translateY(0);
        }
        
        .notification.success {
            background-color: #2ecc71;
        }
        
        .notification.error {
            background-color: #e74c3c;
        }
        
        .error-message {
            background-color: #f8d7da;
            color: #721c24;
            padding: 12px;
            border-radius: 8px;
            margin-top: 15px;
            border-left: 4px solid #dc3545;
            display: none;
        }
        
        .loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 9999;
        }
        
        .loading-content {
            background: white;
            padding: 30px;
            border-radius: 15px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            max-width: 400px;
            width: 90%;
        }
        
        .loading-spinner {
            width: 50px;
            height: 50px;
            border: 5px solid #f3f3f3;
            border-top: 5px solid #3498db;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto 20px;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .register-link {
            text-align: center;
            margin-top: 15px;
        }
        
        .register-link a {
            color: #3498db;
            text-decoration: none;
            font-weight: 600;
        }
        
        .register-link a:hover {
            text-decoration: underline;
        }