/* 登录相关样式 */
.login-section {
    max-width: 400px;
    margin: 50px auto;
    padding: 40px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.login-form h2 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: #333;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e6ed;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.login-error {
    margin-top: 15px;
    padding: 12px;
    background: #ffebee;
    border: 1px solid #f44336;
    border-radius: 6px;
    color: #c62828;
    text-align: center;
}

.btn-login {
    width: 100%;
    display: block;
    margin: 24px 0 0 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 0;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}
.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}