/* =====================================================================
   优品汇通——院线护肤品集合站 前端样式
   ===================================================================== */

:root {
    --color-primary: #b8946a;        /* 香槟金 */
    --color-primary-dark: #9a7a52;
    --color-primary-light: #d4b896;
    --color-accent: #c98b8b;          /* 柔玫红 */
    --color-bg: #faf7f2;             /* 暖米色 */
    --color-card: #ffffff;
    --color-text: #2d2d2d;
    --color-text-light: #777777;
    --color-border: #ece7df;
    --color-overlay: rgba(45, 45, 45, 0.55);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 6px 24px rgba(184, 148, 106, 0.12);
    --shadow-hover: 0 12px 32px rgba(184, 148, 106, 0.2);
    --radius: 10px;
    --radius-lg: 18px;
    --container: 1200px;
    --transition: 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    font-size: 15px;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary); }
ul { list-style: none; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===================== 头部导航 ===================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: 1px;
}
.main-nav ul { display: flex; gap: 6px; }
.main-nav a {
    display: block;
    padding: 10px 18px;
    font-size: 15px;
    color: var(--color-text);
    border-radius: 6px;
    position: relative;
}
.main-nav a.active,
.main-nav a:hover { color: var(--color-primary); }
.main-nav a.active::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 2px;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

/* ===================== 页头搜索框 ===================== */
.header-search {
    display: flex;
    align-items: center;
    flex: 1;
    max-width: 320px;
    margin: 0 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    overflow: hidden;
    transition: var(--transition);
}
.header-search:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(184,148,106,0.12);
}
.header-search input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 8px 16px;
    font-size: 14px;
    outline: none;
    color: var(--color-text);
    min-width: 0;
}
.header-search button {
    background: none;
    border: none;
    padding: 0 16px;
    cursor: pointer;
    font-size: 14px;
    color: var(--color-primary);
}

/* ===================== 微信二维码 ===================== */
.wechat-qr {
    margin-top: 24px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}
.wechat-qr img {
    width: 160px;
    height: 160px;
    object-fit: cover;
    margin: 0 auto 10px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
}
.wechat-qr p {
    font-size: 13px;
    color: var(--color-text-light);
}
.nav-toggle span {
    width: 26px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
    border-radius: 2px;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================== 通用 ===================== */
.section { padding: 56px 0; }
.section-title {
    text-align: center;
    margin-bottom: 40px;
}
.section-title h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-text);
    display: inline-block;
    position: relative;
    padding-bottom: 14px;
}
.section-title h2::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 48px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 3px;
}
.section-title p {
    color: var(--color-text-light);
    margin-top: 12px;
    font-size: 14px;
}
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 30px;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
}
.btn:hover { background: var(--color-primary-dark); color: #fff; transform: translateY(-2px); }
.btn-outline {
    background: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }

.breadcrumb {
    font-size: 13px;
    color: var(--color-text-light);
    padding: 18px 0 0;
}
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { margin: 0 6px; color: #ccc; }

/* ===================== 首页 Banner ===================== */
.hero {
    position: relative;
    height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    background:
        linear-gradient(var(--color-overlay), var(--color-overlay)),
        linear-gradient(135deg, #b8946a 0%, #9a7a52 50%, #6b5238 100%);
    overflow: hidden;
}
.hero-content { position: relative; z-index: 2; padding: 0 20px; }
.hero h1 { font-size: 42px; font-weight: 700; margin-bottom: 16px; letter-spacing: 2px; }
.hero p { font-size: 18px; opacity: 0.92; margin-bottom: 30px; }
.hero .btn { background: #fff; color: var(--color-primary-dark); }
.hero .btn:hover { background: var(--color-accent); color: #fff; }

/* ===================== 品牌区 ===================== */
.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 24px;
}
.brand-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}
.brand-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.brand-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 2px solid var(--color-primary-light);
}
.brand-logo img { width: 100%; height: 100%; object-fit: cover; }
.brand-logo .placeholder {
    font-size: 32px;
    color: var(--color-primary);
    font-weight: 700;
}
.brand-card h3 { font-size: 18px; margin-bottom: 8px; }
.brand-card p { font-size: 13px; color: var(--color-text-light); }

/* ===================== 商品卡片 ===================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}
.product-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}
.product-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
.product-card .thumb {
    aspect-ratio: 1 / 1;
    background: var(--color-bg);
    overflow: hidden;
    position: relative;
}
.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.product-card:hover .thumb img { transform: scale(1.06); }
.product-card .tag-featured {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--color-accent);
    color: #fff;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 20px;
}
.product-card .info { padding: 18px; }
.product-card .brand-name {
    font-size: 12px;
    color: var(--color-primary);
    margin-bottom: 6px;
    letter-spacing: 1px;
}
.product-card .p-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-card .p-spec { font-size: 13px; color: var(--color-text-light); margin-bottom: 6px; }
.product-card .p-efficacy {
    font-size: 13px;
    color: var(--color-text-light);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===================== 商品详情 ===================== */
.product-detail-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 24px;
}
.gallery { position: sticky; top: 90px; align-self: start; }
.gallery-main {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-card);
    box-shadow: var(--shadow-sm);
    position: relative;
}
.gallery-track {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.4s ease;
}
.gallery-track img { flex: 0 0 100%; width: 100%; height: 100%; object-fit: cover; }
.gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.85);
    border: none;
    cursor: pointer;
    font-size: 20px;
    color: var(--color-primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 2;
}
.gallery-nav:hover { background: var(--color-primary); color: #fff; }
.gallery-nav.prev { left: 12px; }
.gallery-nav.next { right: 12px; }
.gallery-dots {
    position: absolute;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
}
.gallery-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.6);
    cursor: pointer;
    transition: var(--transition);
}
.gallery-dots span.active { background: var(--color-primary); width: 24px; border-radius: 4px; }
.gallery-thumbs {
    display: flex;
    gap: 10px;
    margin-top: 14px;
    overflow-x: auto;
    padding-bottom: 4px;
}
.gallery-thumbs img {
    width: 70px;
    height: 70px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    flex-shrink: 0;
    opacity: 0.6;
    transition: var(--transition);
}
.gallery-thumbs img.active,
.gallery-thumbs img:hover { border-color: var(--color-primary); opacity: 1; }

.product-info .p-brand { color: var(--color-primary); font-size: 14px; letter-spacing: 1px; margin-bottom: 8px; }
.product-info h1 { font-size: 28px; font-weight: 700; margin-bottom: 18px; line-height: 1.4; }
.product-info .info-row {
    display: flex;
    padding: 12px 0;
    border-bottom: 1px dashed var(--color-border);
}
.product-info .info-row .label {
    width: 90px;
    color: var(--color-text-light);
    font-size: 14px;
    flex-shrink: 0;
}
.product-info .info-row .val { flex: 1; font-size: 14px; }

.product-detail-content {
    margin-top: 50px;
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-sm);
}
.product-detail-content h2 {
    font-size: 22px;
    margin-bottom: 24px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--color-border);
    position: relative;
}
.product-detail-content h2::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 60px;
    height: 2px;
    background: var(--color-primary);
}
.detail-rich p { margin-bottom: 16px; line-height: 1.9; }
.detail-rich img { border-radius: 8px; margin: 16px 0; }
.detail-rich video { width: 100%; border-radius: 8px; margin: 16px 0; }
.detail-rich h3, .detail-rich h4 { margin: 20px 0 12px; }

/* ===================== 资讯 ===================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
}
.news-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.news-card .cover {
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-bg));
    overflow: hidden;
}
.news-card .cover img { width: 100%; height: 100%; object-fit: cover; }
.news-card .news-body { padding: 20px; }
.news-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card .summary { font-size: 14px; color: var(--color-text-light); margin-bottom: 12px; }
.news-card .meta { font-size: 12px; color: #aaa; }

.news-article { max-width: 820px; margin: 24px auto; background: var(--color-card); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm); }
.news-article h1 { font-size: 28px; margin-bottom: 16px; line-height: 1.4; }
.news-article .meta { color: var(--color-text-light); font-size: 13px; padding-bottom: 20px; border-bottom: 1px solid var(--color-border); margin-bottom: 24px; }
.news-article .content { line-height: 1.9; }
.news-article .content img { border-radius: 8px; margin: 16px 0; }
.news-article .content p { margin-bottom: 16px; }

/* ===================== 联系我们 / 留言 ===================== */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 24px; }
.contact-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-sm);
}
.contact-card h3 { font-size: 20px; margin-bottom: 20px; padding-bottom: 14px; border-bottom: 1px solid var(--color-border); }
.contact-list li { padding: 12px 0; border-bottom: 1px dashed var(--color-border); display: flex; align-items: center; }
.contact-list .icon { width: 36px; height: 36px; border-radius: 50%; background: var(--color-bg); color: var(--color-primary); display: flex; align-items: center; justify-content: center; margin-right: 14px; font-size: 16px; flex-shrink: 0; }
.contact-list .ci-label { font-size: 13px; color: var(--color-text-light); }
.contact-list .ci-val { font-size: 15px; }

.message-form .form-group { margin-bottom: 18px; }
.message-form label { display: block; margin-bottom: 6px; font-size: 14px; font-weight: 500; }
.message-form .required { color: var(--color-accent); }
.message-form input,
.message-form select,
.message-form textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    background: #fff;
    transition: var(--transition);
}
.message-form input:focus,
.message-form select:focus,
.message-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(184,148,106,0.12);
}
.message-form textarea { resize: vertical; min-height: 120px; }
.form-row { display: flex; gap: 14px; }
.form-row .form-group { flex: 1; }

/* ===================== 通用页头 banner ===================== */
.page-banner {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: #fff;
    padding: 60px 0;
    text-align: center;
}
.page-banner h1 { font-size: 32px; margin-bottom: 8px; }
.page-banner p { opacity: 0.9; font-size: 15px; }

/* ===================== 空状态 ===================== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--color-text-light);
}
.empty-state .icon { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }

/* ===================== 返回顶部 ===================== */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    border: none;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 90;
    box-shadow: var(--shadow-md);
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-3px); }

/* ===================== 提示弹层 ===================== */
.toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: var(--color-text);
    color: #fff;
    padding: 14px 28px;
    border-radius: 30px;
    font-size: 14px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s ease;
    z-index: 9999;
    box-shadow: var(--shadow-md);
}
.toast.show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.toast.success { background: #2e8b57; }
.toast.error { background: #c0392b; }

/* ===================== 页脚 ===================== */
.site-footer {
    background: #2b2520;
    color: #cfc6bd;
    margin-top: 60px;
}
.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding: 50px 20px 40px;
}
.footer-col h4 { color: #fff; margin-bottom: 18px; font-size: 16px; }
.footer-about { font-size: 14px; line-height: 1.8; color: #a89e94; }
.footer-contact li, .footer-links li { padding: 6px 0; font-size: 14px; color: #a89e94; }
.footer-links a:hover { color: var(--color-primary-light); }
.footer-bottom {
    border-top: 1px solid #3d352e;
    padding: 18px 0;
    text-align: center;
    font-size: 13px;
    color: #8a8077;
}

/* ===================== 分页 ===================== */
.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 40px; }
.pagination a, .pagination span {
    padding: 8px 14px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 14px;
    background: #fff;
}
.pagination a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination .current { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ===================== 响应式 ===================== */
@media (max-width: 992px) {
    .product-detail-wrap { grid-template-columns: 1fr; gap: 30px; }
    .gallery { position: static; }
    .contact-wrap { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .header-search { margin: 0 12px; max-width: none; }
    .header-search input { padding: 7px 10px; font-size: 13px; }
    .header-search button { padding: 0 10px; }
    .main-nav {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: #fff;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--color-border);
    }
    .main-nav.open { max-height: 320px; }
    .main-nav ul { flex-direction: column; padding: 10px 0; }
    .main-nav a { padding: 14px 24px; border-radius: 0; }
    .main-nav a.active::after { display: none; }

    .hero { height: 380px; }
    .hero h1 { font-size: 30px; }
    .hero p { font-size: 16px; }

    .section { padding: 40px 0; }
    .section-title h2 { font-size: 24px; }

    .product-detail-content { padding: 24px; }
    .news-article { padding: 24px; }
    .news-article h1 { font-size: 22px; }

    .footer-inner { grid-template-columns: 1fr; gap: 28px; }
    .form-row { flex-direction: column; gap: 0; }
    .gallery-thumbs img { width: 56px; height: 56px; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 24px; }
    .logo-text { font-size: 15px; }
    .product-grid, .news-grid, .brand-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .product-card .info { padding: 12px; }
    .product-card .p-name { font-size: 14px; }
    .back-to-top { right: 16px; bottom: 16px; }
}