/* ============================================================
   THEME01 - CSS Chính
   Multi-site Bán Hàng
   ============================================================ */

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 15px;
    color: #333;
    background: #f8f8f8;
    line-height: 1.6;
}

a { color: inherit; text-decoration: none; transition: color .2s; }
a:hover { color: #e74c3c; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ── Biến màu ── */
:root {
    --primary:   #e74c3c;
    --primary-d: #c0392b;
    --dark:      #2c2c2c;
    --gray:      #666;
    --light-gray:#f0f0f0;
    --border:    #e0e0e0;
    --white:     #fff;
    --radius:    6px;
    --shadow:    0 2px 12px rgba(0,0,0,.08);
    --transition:.25s ease;
}

/* ── Container ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* ── Tiêu đề section ── */
.section-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--primary);
    display: inline-block;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 12px 0;
    flex-wrap: wrap;
}

/* Logo */
.header-logo { flex-shrink: 0; }
.logo-img { height: 48px; width: auto; }
.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

/* Hotline */
.header-hotline {
    font-size: 14px;
    color: var(--gray);
    margin-left: auto;
}
.hotline-number {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    margin-left: 4px;
}

/* Navigation */
.main-nav { margin-left: auto; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-list {
    display: flex;
    gap: 4px;
    align-items: center;
}

.nav-list > li { position: relative; }

.nav-list > li > a {
    display: block;
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    border-radius: var(--radius);
    transition: var(--transition);
    white-space: nowrap;
}
.nav-list > li > a:hover,
.nav-list > li > a.active {
    color: var(--primary);
    background: rgba(231,76,60,.07);
}

/* Dropdown menu */
.dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: var(--transition);
    z-index: 200;
}
.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown li a {
    display: block;
    padding: 9px 16px;
    font-size: 14px;
    color: var(--dark);
    border-bottom: 1px solid var(--light-gray);
    transition: var(--transition);
}
.dropdown li:last-child a { border-bottom: none; }
.dropdown li a:hover { background: var(--light-gray); color: var(--primary); }

/* ============================================================
   BANNER / HERO
   ============================================================ */
.hero-banner {
    width: 100%;
    max-height: 480px;
    overflow: hidden;
    position: relative;
}
.hero-banner img {
    width: 100%;
    height: 480px;
    object-fit: cover;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0,0,0,.45), transparent);
    display: flex;
    align-items: center;
}
.hero-content {
    color: var(--white);
    padding: 0 60px;
    max-width: 520px;
}
.hero-content h1 { font-size: 36px; font-weight: 700; margin-bottom: 12px; line-height: 1.3; }
.hero-content p  { font-size: 16px; margin-bottom: 24px; opacity: .9; }
.btn-hero {
    display: inline-block;
    padding: 12px 32px;
    background: var(--primary);
    color: var(--white);
    border-radius: 30px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
}
.btn-hero:hover { background: var(--primary-d); color: var(--white); transform: translateY(-2px); }

/* ============================================================
   MAIN CONTENT LAYOUT
   ============================================================ */
.main-content { padding: 40px 0; }

/* Layout 2 cột: sidebar + nội dung */
.content-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 32px;
    align-items: start;
}

/* ── Sidebar ── */
.sidebar {}
.sidebar-block {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 20px;
    margin-bottom: 24px;
}
.sidebar-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
}
.sidebar-cats li { border-bottom: 1px solid var(--light-gray); }
.sidebar-cats li:last-child { border-bottom: none; }
.sidebar-cats li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 9px 4px;
    font-size: 14px;
    color: var(--gray);
    transition: var(--transition);
}
.sidebar-cats li a:hover,
.sidebar-cats li a.active { color: var(--primary); padding-left: 8px; }

/* ============================================================
   PRODUCT CARDS
   ============================================================ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
}
.product-card:hover {
    box-shadow: 0 6px 24px rgba(0,0,0,.12);
    transform: translateY(-4px);
}

.product-thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    background: var(--light-gray);
}
.product-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s ease;
}
.product-card:hover .product-thumb img { transform: scale(1.06); }

/* Badge giảm giá */
.badge-discount {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--primary);
    color: var(--white);
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 20px;
}

.product-info { padding: 12px; }

.product-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.product-price { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.price-normal  { font-size: 16px; font-weight: 700; color: var(--primary); }
.price-old     { font-size: 13px; color: #999; text-decoration: line-through; }

.btn-add-cart {
    display: block;
    width: 100%;
    padding: 8px;
    margin-top: 10px;
    background: var(--primary);
    color: var(--white);
    text-align: center;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}
.btn-add-cart:hover { background: var(--primary-d); color: var(--white); }

/* ============================================================
   PRODUCT DETAIL
   ============================================================ */
.product-detail { background: var(--white); border-radius: var(--radius); padding: 32px; }

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

/* Gallery ảnh */
.product-gallery {}
.gallery-main {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 12px;
    aspect-ratio: 1 / 1;
    background: var(--light-gray);
}
.gallery-main img { width: 100%; height: 100%; object-fit: cover; }

.gallery-thumbs { display: flex; gap: 8px; flex-wrap: wrap; }
.gallery-thumb {
    width: 68px;
    height: 68px;
    border: 2px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}
.gallery-thumb:hover,
.gallery-thumb.active { border-color: var(--primary); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }

/* Thông tin sản phẩm */
.product-detail-info {}
.product-detail-name { font-size: 24px; font-weight: 700; margin-bottom: 12px; line-height: 1.4; }
.product-detail-sku  { font-size: 13px; color: var(--gray); margin-bottom: 16px; }

.product-detail-price {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding: 16px;
    background: #fff5f5;
    border-radius: var(--radius);
}
.detail-price-normal { font-size: 28px; font-weight: 700; color: var(--primary); }
.detail-price-old    { font-size: 16px; color: #999; text-decoration: line-through; }

.product-stock { font-size: 14px; margin-bottom: 20px; }
.stock-in  { color: #27ae60; font-weight: 600; }
.stock-out { color: #e74c3c; font-weight: 600; }

/* Nút mua hàng */
.btn-buy {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: var(--primary);
    color: var(--white);
    border-radius: 30px;
    font-size: 16px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    justify-content: center;
    margin-bottom: 12px;
}
.btn-buy:hover { background: var(--primary-d); color: var(--white); transform: translateY(-2px); }

/* Tabs mô tả / thông số */
.product-tabs { margin-top: 32px; }
.tab-nav { display: flex; gap: 0; border-bottom: 2px solid var(--border); margin-bottom: 24px; }
.tab-btn {
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--gray);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition);
}
.tab-btn.active, .tab-btn:hover { color: var(--primary); border-bottom-color: var(--primary); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.tab-panel p, .tab-panel li { line-height: 1.8; font-size: 14px; color: var(--gray); }

/* ============================================================
   POST CARDS
   ============================================================ */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.post-card {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
}
.post-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }

.post-thumb {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--light-gray);
}
.post-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
.post-card:hover .post-thumb img { transform: scale(1.04); }

.post-info { padding: 16px; }
.post-date { font-size: 12px; color: var(--gray); margin-bottom: 8px; }
.post-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.post-title:hover { color: var(--primary); }
.post-excerpt { font-size: 13px; color: var(--gray); line-height: 1.6; }

/* Post Detail */
.post-detail-wrap { background: var(--white); border-radius: var(--radius); padding: 32px; }
.post-detail-title { font-size: 28px; font-weight: 700; margin-bottom: 12px; line-height: 1.4; }
.post-detail-meta  { font-size: 13px; color: var(--gray); margin-bottom: 24px; }
.post-detail-thumb { margin-bottom: 24px; border-radius: var(--radius); overflow: hidden; }
.post-detail-thumb img { width: 100%; }
.post-detail-content { font-size: 15px; line-height: 1.9; color: #444; }
.post-detail-content h2, .post-detail-content h3 { margin: 24px 0 12px; color: var(--dark); }
.post-detail-content p  { margin-bottom: 16px; }
.post-detail-content img { border-radius: var(--radius); margin: 16px 0; }

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
}
.contact-info h2 { font-size: 22px; font-weight: 700; margin-bottom: 20px; }
.contact-info p  { font-size: 14px; color: var(--gray); margin-bottom: 12px; line-height: 1.7; }
.contact-info strong { color: var(--dark); }

.contact-form h2 { font-size: 22px; font-weight: 700; margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { min-height: 120px; resize: vertical; }

.btn-submit {
    padding: 12px 32px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.btn-submit:hover { background: var(--primary-d); transform: translateY(-1px); }

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination-wrap { margin-top: 32px; display: flex; justify-content: center; }
.pagination { display: flex; gap: 6px; flex-wrap: wrap; }
.pagination li a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    color: var(--gray);
    background: var(--white);
    transition: var(--transition);
}
.pagination li.active a,
.pagination li a:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb { font-size: 13px; color: var(--gray); padding: 12px 0; margin-bottom: 16px; }
.breadcrumb a { color: var(--primary); }
.breadcrumb span { margin: 0 6px; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
    background: var(--dark);
    color: #ccc;
    margin-top: 60px;
    padding: 48px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 40px;
}
.footer-heading { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 16px; }
.site-footer p  { font-size: 13px; line-height: 1.8; margin-bottom: 8px; }
.site-footer a  { color: #bbb; transition: var(--transition); }
.site-footer a:hover { color: var(--primary); }

.footer-links { display: flex; flex-direction: column; gap: 6px; }
.footer-links a { font-size: 13px; }

.footer-posts { display: flex; flex-direction: column; gap: 12px; }
.footer-posts li { border-bottom: 1px solid rgba(255,255,255,.08); padding-bottom: 10px; }
.footer-posts a  { font-size: 13px; display: block; margin-bottom: 2px; }
.footer-posts .post-date { font-size: 11px; color: #888; }

.footer-icon { margin-right: 6px; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding: 16px 0;
    text-align: center;
    font-size: 13px;
    color: #888;
}

/* ============================================================
   UTILITIES
   ============================================================ */
.mt-0 { margin-top: 0 !important; }
.mb-20 { margin-bottom: 20px; }
.mb-32 { margin-bottom: 32px; }
.text-center { text-align: center; }
.empty-msg { text-align: center; padding: 48px 0; color: var(--gray); font-size: 15px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .content-layout { grid-template-columns: 200px 1fr; }
}

@media (max-width: 768px) {
    /* Header mobile */
    .header-hotline { display: none; }
    .nav-toggle { display: flex; }
    .main-nav { width: 100%; order: 3; }
    .nav-list {
        display: none;
        flex-direction: column;
        gap: 0;
        padding: 8px 0;
        border-top: 1px solid var(--border);
    }
    .nav-list.open { display: flex; }
    .nav-list > li > a { padding: 10px 16px; border-radius: 0; }
    .dropdown { position: static; opacity: 1; visibility: visible;
                transform: none; box-shadow: none; border: none;
                background: var(--light-gray); border-radius: 0; }

    /* Layout 1 cột */
    .content-layout { grid-template-columns: 1fr; }
    .sidebar { order: 2; }
    .product-detail-grid { grid-template-columns: 1fr; }
    .contact-wrap { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-content { padding: 0 24px; }
    .hero-content h1 { font-size: 24px; }
}

@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .posts-grid { grid-template-columns: 1fr; }
}