body {
        background: linear-gradient(135deg, #66ee66 0%, #764ba2 100%);
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 20px;
    }
    
    .login-container {
        background: white;
        padding: 40px;
        border-radius: 15px;
        box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        max-width: 450px;
        width: 100%;
    }
    
    .login-logo {
        text-align: center;
        margin-bottom: 30px;
    }
    
    .login-logo i {
        font-size: 60px;
        color: #66ee66;
        margin-bottom: 15px;
    }
    
    .login-logo h2 {
        color: #333;
        font-size: 28px;
        font-weight: bold;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    .form-group label {
        display: block;
        margin-bottom: 8px;
        font-weight: 600;
        color: #555;
    }
    
    .form-group input {
        width: 100%;
        padding: 12px 15px;
        border: 2px solid #ddd;
        border-radius: 8px;
        font-size: 16px;
        transition: all 0.3s;
    }
    
    .form-group input:focus {
        outline: none;
        border-color: #66ee66;
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    }
    
    .btn-login {
        width: 100%;
        padding: 14px;
        background: linear-gradient(135deg, #66ee66 0%, #764ba2 100%);
        color: white;
        border: none;
        border-radius: 8px;
        font-size: 18px;
        font-weight: bold;
        cursor: pointer;
        transition: all 0.3s;
        margin-top: 10px;
    }
    
    .btn-login:hover {
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
    }
    
    .login-footer {
        text-align: center;
        margin-top: 25px;
        color: #666;
        font-size: 14px;
    }
    
    .alert {
        padding: 12px;
        border-radius: 8px;
        margin-bottom: 20px;
        font-weight: 500;
    }
    
    .alert-success {
        background: #d4edda;
        color: #155724;
        border: 1px solid #c3e6cb;
    }
    
    .alert-danger {
        background: #f8d7da;
        color: #721c24;
        border: 1px solid #f5c6cb;
    }
    
    /* Responsive */
    @media (max-width: 480px) {
        .login-container {
            padding: 30px 20px;
        }
    }