body {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        .login-container {
            background: white;
            border-radius: 15px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            max-width: 400px;
            width: 100%;
            margin: 20px;
        }
        
        .login-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 30px;
            text-align: center;
        }
        
        .login-header h2 {
            margin: 0;
            font-weight: 300;
        }
        
        .login-header .subtitle {
            opacity: 0.9;
            font-size: 14px;
            margin-top: 5px;
        }
        
        .login-body {
            padding: 30px;
        }
        
        .form-floating {
            margin-bottom: 20px;
        }
        
        .form-control {
            border-radius: 10px;
            border: 2px solid #e9ecef;
            transition: all 0.3s ease;
        }
        
        .form-control:focus {
            border-color: #667eea;
            box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
        }
        
        .btn-login {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border: none;
            border-radius: 10px;
            padding: 12px;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: all 0.3s ease;
        }
        
        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
        }
        
        .form-check {
            margin: 20px 0;
        }
        
        .form-check-input:checked {
            background-color: #667eea;
            border-color: #667eea;
        }
        
        .alert {
            border-radius: 10px;
            border: none;
            margin-bottom: 20px;
        }
        
        .forgot-password {
            text-align: center;
            margin-top: 20px;
        }
        
        .forgot-password a {
            color: #667eea;
            text-decoration: none;
            font-size: 14px;
        }
        
        .forgot-password a:hover {
            text-decoration: underline;
        }
        
        .loading {
            display: none;
        }
        
        .loading.show {
            display: inline-block;
        }