* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .login-container {
            width: 100%;
            max-width: 400px;
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            animation: slideUp 0.5s ease-out;
        }
        
        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .login-header {
            background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
            padding: 40px 30px;
            text-align: center;
            color: white;
        }
        
        .login-header h1 {
            font-size: 28px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
        }
        
        .login-header h1 i {
            font-size: 32px;
        }
        
        .login-header p {
            opacity: 0.9;
            font-size: 14px;
        }
        
        .login-body {
            padding: 40px 30px;
        }
        
        .form-group {
            margin-bottom: 25px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #333;
            font-weight: 500;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .form-group label i {
            color: #4FACFE;
        }
        
        .input-group {
            position: relative;
        }
        
        .input-group i {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #888;
        }
        
        .form-control {
            width: 100%;
            padding: 15px 15px 15px 45px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 16px;
            transition: all 0.3s ease;
        }
        
        .form-control:focus {
            outline: none;
            border-color: #4FACFE;
            box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.1);
        }
        
        .btn {
            width: 100%;
            padding: 15px;
            background: linear-gradient(135deg, #4FACFE 0%, #00f2fe 100%);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(79, 172, 254, 0.3);
        }
        
        .btn:active {
            transform: translateY(0);
        }
        
        .error-message {
            background: #fee;
            color: #c00;
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            border-left: 4px solid #c00;
            display: flex;
            align-items: center;
            gap: 10px;
            animation: fadeIn 0.3s ease;
        }
        
        .error-message i {
            font-size: 18px;
        }
        
        .login-footer {
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #eee;
            color: #666;
            font-size: 14px;
        }
        
        .login-footer a {
            color: #4FACFE;
            text-decoration: none;
            font-weight: 500;
        }
        
        .login-footer a:hover {
            text-decoration: underline;
        }
        
        .demo-credentials {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 15px;
            margin-top: 20px;
            font-size: 13px;
            color: #666;
            border-left: 4px solid #4FACFE;
        }
        
        .demo-credentials h4 {
            color: #333;
            margin-bottom: 8px;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .demo-credentials ul {
            list-style: none;
            padding-left: 5px;
        }
        
        .demo-credentials li {
            margin: 5px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        
        /* Responsive */
        @media (max-width: 480px) {
            .login-container {
                border-radius: 15px;
            }
            
            .login-header {
                padding: 30px 20px;
            }
            
            .login-body {
                padding: 30px 20px;
            }
            
            .login-header h1 {
                font-size: 24px;
            }
        }