/* 辅助样式 */
.button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.button:hover {
    background-color: #0056b3;
}

/* 表单基础样式 */
.form-group {
    margin-bottom: 18px;
}

/* 导航栏移动端优化 */
@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        display: none;
    }

    .nav-links.show {
        display: flex;
    }

    .nav-links li {
        margin: 8px 0;
    }

    .mobile-menu {
        display: block;
    }
}

.form-control {
    width: 100%;
    padding: 14px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

@media (max-width: 480px) {
    .form-control {
        padding: 14px 16px;
        font-size: 0.95rem;
        border-radius: 10px;
    }

    .button {
        width: 100%;
        padding: 16px 0;
        font-size: 1.05rem;
        text-align: center;
        border-radius: 10px;
    }

    select.form-control {
        appearance: none;
        background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
        background-repeat: no-repeat;
        background-position: right 12px center;
        background-size: 16px;
    }

    .form-group label {
        font-size: 0.9rem;
        margin-bottom: 6px;
        display: block;
    }
}