/* ==================== 咨询表单页样式 ==================== */
/* 由 contact.html / contact-mobile.html 引用，兼容 PC 与手机两种头部 */

.contact-main {
    padding-top: calc(var(--header-height, 80px) + 60px);
    padding-bottom: 90px;
    background: linear-gradient(180deg, #F2F6FB 0%, #FFFFFF 100%);
    min-height: 70vh;
}

.contact-container {
    max-width: 780px;
    margin: 0 auto;
    padding: 0 20px;
}

.contact-header {
    text-align: center;
    margin-bottom: 44px;
}

.contact-title {
    font-family: var(--font-serif);
    font-size: 38px;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: 1px;
    color: var(--color-navy);
}

.contact-subtitle {
    font-size: 14px;
    line-height: 1.9;
    color: var(--color-text-muted);
    max-width: 580px;
    margin: 16px auto 0;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 26px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 48px 52px;
    box-shadow: 0 16px 40px rgba(5, 22, 51, 0.08);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.required {
    color: #E53935;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 13px 16px;
    font-size: 14px;
    font-family: var(--font-sans);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: #FAFBFD;
    outline: none;
    transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #A9B1BD;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(0, 119, 200, 0.12);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

/* 校验失败状态（由 script.js 控制） */
.form-group.error input,
.form-group.error textarea {
    border-color: #E53935;
    box-shadow: 0 0 0 3px rgba(229, 57, 53, 0.1);
}

.form-submit {
    text-align: center;
    margin-top: 4px;
}

.form-submit .btn {
    min-width: 200px;
    padding: 14px 40px;
    font-size: 15px;
}

/* input 形式的提交按钮：与 button 样式保持一致 */
.form-submit input.btn {
    font-family: inherit;
    line-height: normal;
    text-align: center;
}

/* 提交反馈消息（由 script.js 动态创建） */
.form-message {
    text-align: center;
    font-size: 14px;
    line-height: 1.6;
    padding: 12px 16px;
    border-radius: 4px;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

/* 3 秒后淡出消失（由 script.js 添加 fade-out） */
.form-message.fade-out {
    opacity: 0;
    transform: translateY(-8px);
}

.form-message.error-message {
    color: #C62828;
    background: #FDECEA;
    border: 1px solid #F5C6C2;
}

.form-message.success-message {
    color: #1B7A3D;
    background: #E8F5EC;
    border: 1px solid #BFE3CB;
}

/* ==================== 手机适配 ==================== */
@media (max-width: 768px) {
    .contact-main {
        padding-top: 120px;
        padding-bottom: 60px;
    }

    .contact-header {
        margin-bottom: 30px;
    }

    .contact-title {
        font-size: 28px;
    }

    .contact-subtitle {
        font-size: 13px;
    }

    .contact-form {
        padding: 30px 20px;
        gap: 20px;
        border-radius: 6px;
    }

    .form-group input,
    .form-group textarea {
        padding: 12px 14px;
    }

    .form-submit .btn {
        width: 100%;
        min-width: 0;
    }
}