/* ======================================= */
/* 0. BIẾN DÙNG CHUNG - chỉnh màu/độ bo góc ở đây sẽ áp dụng toàn site */
/* ======================================= */
:root {
    --primary: #2b60de;
    --primary-dark: #1a42a3;
    --navy: #1a2b4d;
    --accent: #ffd166;
    --danger: #d70018;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow-sm: 0 2px 10px rgba(20, 30, 60, 0.05);
    --shadow-md: 0 10px 24px rgba(20, 30, 60, 0.10);
    --ease: cubic-bezier(.2, .7, .3, 1);
}

/* ======================================= */
/* 1. RESET & CƠ BẢN */
/* ======================================= */
* { box-sizing: border-box; }
body { margin: 0; font-family: 'Segoe UI', Tahoma, sans-serif; background: linear-gradient(180deg, #eef4ff 0%, #eef2fa 320px); color: #333; }
a { text-decoration: none; color: inherit; }
.container { max-width: 1600px; margin: 30px auto; padding: 0 15px; }

/* ======================================= */
/* TOP BAR (thanh tiện ích trên cùng) */
/* ======================================= */
.top-bar { background-color: var(--navy); color: #cfd8ea; font-size: 13px; }
.top-bar-inner {
    max-width: 1600px; margin: 0 auto; padding: 8px 15px;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 6px;
}
.top-bar-left a { color: var(--accent); font-weight: 700; animation: promo-glow 2.2s ease-in-out infinite; }
.top-bar-left a:hover { text-decoration: underline; }
@keyframes promo-glow {
    0%, 100% { text-shadow: 0 0 0 rgba(255, 209, 102, 0); }
    50% { text-shadow: 0 0 10px rgba(255, 209, 102, 0.75); }
}
.top-bar-right { display: flex; gap: 18px; flex-wrap: wrap; }
.top-bar-right span { white-space: nowrap; }

/* ======================================= */
/* HEADER CHÍNH */
/* ======================================= */
header { background: linear-gradient(135deg, var(--primary) 0%, #2450bd 100%); box-shadow: 0 2px 10px rgba(20,30,60,0.15); }
.header-inner {
    max-width: 1600px; margin: 0 auto; padding: 15px 15px;
    display: flex; align-items: center; gap: 25px; flex-wrap: wrap;
}

.logo { display: flex; align-items: center; flex-shrink: 0; }
.logo img { height: 36px; width: auto; display: block; }

/* Ô tìm kiếm */
.search-box { flex-grow: 1; min-width: 220px; display: flex; max-width: 560px; }
.search-box input {
    flex-grow: 1; border: none; outline: none; padding: 11px 16px; font-size: 14px;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm); min-width: 0;
}
.search-box button {
    border: none; background: var(--accent); color: var(--navy); font-size: 16px; font-weight: bold;
    padding: 0 18px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; cursor: pointer; transition: background 0.2s, transform 0.2s;
}
.search-box button:hover { background: #ffc233; }
.search-box button:active { transform: scale(0.96); }

/* Hotline / nút liên hệ nhanh bên phải header */
.header-actions { display: flex; align-items: center; gap: 22px; margin-left: auto; flex-shrink: 0; }
.action-item { display: flex; align-items: center; gap: 8px; color: #fff; }
.action-icon { font-size: 22px; }
.action-text { font-size: 14px; font-weight: 700; line-height: 1.3; }
.action-text small { display: block; font-weight: 400; font-size: 11px; color: #cfe0ff; }
.action-cta { background: rgba(255,255,255,0.14); padding: 8px 16px; border-radius: 20px; transition: background 0.2s, transform 0.2s; animation: cta-glow 2.4s ease-in-out infinite; }
.action-cta:hover { background: rgba(255,255,255,0.24); transform: translateY(-1px); }
@keyframes cta-glow {
    0%, 100% { box-shadow: 0 0 0 rgba(255,209,102,0); }
    50% { box-shadow: 0 0 12px rgba(255,209,102,0.55); }
}

/* ======================================= */
/* NÚT LIÊN HỆ NỔI (FLOATING) */
/* ======================================= */
.floating-contact {
    position: fixed; right: 20px; bottom: 90px; z-index: 3000;
    display: flex; flex-direction: column; gap: 12px;
}
.fc-btn {
    position: relative;
    width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    background: #fff; box-shadow: var(--shadow-md); font-size: 24px;
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.fc-btn:hover { transform: scale(1.1) translateY(-2px); box-shadow: 0 14px 28px rgba(20,30,60,0.22); }
.fc-btn img { width: 30px; height: 30px; object-fit: contain; }
.fc-phone { background: #2ecc71; color: #fff; }

/* Hiệu ứng "ping" lan toả nhẹ nhàng ở 3 nút liên hệ nổi - thu hút chú ý, mỗi nút lệch nhịp 1 chút */
.fc-btn::after {
    content: ""; position: absolute; inset: 0; border-radius: 50%; z-index: -1;
    animation: fc-ping 2.4s cubic-bezier(0,0,0.2,1) infinite; pointer-events: none;
}
.fc-zalo::after { background: rgba(0,104,255,0.55); animation-delay: 0s; }
.fc-mess::after { background: rgba(0,132,255,0.55); animation-delay: 0.6s; }
.fc-phone::after { background: rgba(46,204,113,0.55); animation-delay: 1.2s; }
@keyframes fc-ping {
    0% { transform: scale(1); opacity: 0.55; }
    75%, 100% { transform: scale(1.8); opacity: 0; }
}

/* ======================================= */
/* FOOTER */
/* ======================================= */
.site-footer { background: var(--navy); color: #b9c4de; margin-top: 40px; }
.footer-grid {
    max-width: 1600px; margin: 0 auto; padding: 45px 15px 30px;
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 30px;
}
.footer-col h4 { color: #fff; font-size: 16px; margin: 0 0 16px; text-transform: uppercase; letter-spacing: 0.5px; }
.footer-col p { font-size: 13.5px; line-height: 1.8; margin: 6px 0; }
.footer-col a { transition: color 0.2s; }
.footer-col a:hover { color: var(--accent); }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 10px; font-size: 13.5px; }
.footer-about { line-height: 1.7; }
.footer-social { display: flex; flex-direction: column; gap: 10px; }
.footer-social a {
    background: rgba(255,255,255,0.08); padding: 8px 14px; border-radius: 6px; font-size: 13.5px; font-weight: 600;
    text-align: center; transition: background 0.2s;
}
.footer-social a:hover { background: rgba(255,255,255,0.18); }
.footer-bottom {
    text-align: center; padding: 16px; background: rgba(0,0,0,0.2); font-size: 13px; color: #8ea0c7;
}


/* ======================================= */
/* 2. BỐ CỤC CHÍNH (MAIN LAYOUT) CÓ SIDEBAR */
/* ======================================= */
/* main-layout giờ chỉ còn bọc sidebar + banner (các khối còn lại đã kéo ra full-width bên dưới,
   xem .full-width-sections). Dùng lại align-items:stretch để nền trắng của sidebar luôn kéo dài
   bằng chiều cao banner bên phải - không bị hụt/lộ nền xám nhạt của body phía dưới sidebar nữa. */
.main-layout { display: flex; gap: 20px; align-items: stretch; }

/* Các khối full-width phía dưới banner (video, trust-strip, các carousel sản phẩm) - dùng chung
   class .container để mép trái/phải luôn thẳng hàng với mép của .main-layout (tức thẳng hàng với
   mép trái của sidebar), không bị bó hẹp trong .content-area (phần bên phải sidebar) nữa. */
.full-width-sections { display: block; } /* các khối con (.product-section, .trust-strip) đã tự có margin-bottom riêng */

/* Menu bên trái - Chuẩn phong cách Hoàng Hà */
.sidebar {
    width: 250px;
    flex-shrink: 0;
    background: #ffffff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 10px 0;
    border: 1px solid #f0f0f0;
    /* KHÔNG dùng overflow:hidden ở đây - sẽ cắt mất flyout menu (position:absolute, left:100%) */
    position: relative; z-index: 50; /* để flyout (bên trong) nổi lên trên .content-area (banner...) */
}

.sidebar-title {
    background: var(--primary); color: #fff; font-weight: 700; font-size: 14.5px;
    padding: 13px 20px; letter-spacing: 0.3px;
    border-radius: var(--radius) var(--radius) 0 0;
}
.sidebar-menu { list-style: none; padding: 0; margin: 0; }
.sidebar-menu li { position: relative; }

.sidebar-menu li a { 
    display: flex; align-items: center; justify-content: space-between; 
    padding: 10px 20px; color: #444; font-size: 14px; font-weight: 500; 
    border-bottom: 1px solid #f8f8f8; transition: all 0.2s ease; 
}
.sidebar-menu li a .menu-icon { margin-right: 12px; color: #888; width: 20px; flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center; }
.sidebar-menu li a .menu-icon-svg { display: block; }
.sidebar-menu li a .menu-text { flex-grow: 1; }
.sidebar-menu li a .menu-arrow { font-size: 10px; color: #ccc; transition: transform 0.2s ease; }

/* Hover Sidebar */
.sidebar-menu li a:hover { color: var(--primary); background-color: #f4f7ff; font-weight: 600; }
.sidebar-menu li a:hover .menu-icon { color: var(--primary); }
.sidebar-menu li a:hover .menu-arrow { color: var(--primary); transform: translateX(3px); }

/* Mục danh mục đang được chọn (trang category.php) */
.sidebar-menu li a.active-category { color: var(--primary); background-color: #eaf0ff; font-weight: 700; border-right: 3px solid var(--primary); }
.sidebar-menu li a.active-category .menu-icon,
.sidebar-menu li a.active-category .menu-arrow { color: var(--primary); }
.sidebar-menu li:last-child a { border-bottom: none; }

/* Flyout menu bên phải sidebar (kiểu mega-menu) - hiện khi hover vào 1 danh mục */
.sidebar-flyout {
    position: absolute; left: 100%; top: -1px; width: 380px; z-index: 200;
    background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-md);
    border: 1px solid #eef0f5; padding: 16px;
    opacity: 0; visibility: hidden; transform: translateX(-6px);
    transition: opacity 0.18s var(--ease), transform 0.18s var(--ease), visibility 0s linear 0.18s;
}
.has-flyout:hover .sidebar-flyout {
    opacity: 1; visibility: visible; transform: translateX(0);
    transition: opacity 0.18s var(--ease), transform 0.18s var(--ease);
}
.flyout-header { font-weight: 700; font-size: 14px; color: #222; margin-bottom: 12px; }
.flyout-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.flyout-tile {
    display: flex; flex-direction: column; align-items: center; text-align: center;
    background: #f8f9fa; border: 1px solid #f0f2f7; border-radius: var(--radius-sm); padding: 10px 6px;
    transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.flyout-tile:hover { border-color: var(--primary); transform: translateY(-2px); }
.flyout-tile img { width: 100%; height: 60px; object-fit: contain; margin-bottom: 8px; }
.flyout-tile-label { font-size: 11.5px; font-weight: 600; color: #333; line-height: 1.3; }
.flyout-tile-count { font-size: 10.5px; color: #999; margin-top: 2px; }
.flyout-viewall {
    display: block; text-align: center; margin-top: 14px; padding-top: 12px;
    border-top: 1px solid #f0f2f7; font-size: 13px; font-weight: 600; color: var(--primary);
}
.flyout-viewall:hover { text-decoration: underline; }
.flyout-empty { text-align: center; font-size: 12.5px; color: #999; padding: 18px 10px; margin: 0; }

@media (max-width: 1300px) {
    .sidebar-flyout { width: 320px; }
    .flyout-tile img { height: 50px; }
}
@media (max-width: 900px) {
    .sidebar-flyout { display: none; } /* Trên mobile bấm thẳng vào danh mục, không cần flyout */
}

.content-area { flex-grow: 1; min-width: 0; }


/* ======================================= */
/* 2b. DÃY VIDEO TIKTOK HOT (bên dưới banner, cuộn ngang) - dùng ẢNH THUMBNAIL THẬT, bấm mới mở
   video (iframe nhúng trực tiếp của TikTok hay bị lỗi không phát được nên đổi cách này cho chắc) */
.tiktok-row-item {
    flex-shrink: 0; width: 200px; display: block; border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow-sm); border: 1px solid #eef0f5; background: #fff; cursor: pointer;
    transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.tiktok-row-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.tiktok-thumb-wrap { position: relative; width: 100%; aspect-ratio: 9 / 16; background: #111; overflow: hidden; }
.tiktok-thumb-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.3s var(--ease); }
.tiktok-row-item:hover .tiktok-thumb-wrap img { transform: scale(1.05); }
.tiktok-play-badge {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 46px; height: 46px; border-radius: 50%; background: rgba(0,0,0,0.55); color: #fff;
    display: flex; align-items: center; justify-content: center; font-size: 18px;
    border: 2px solid rgba(255,255,255,0.8);
}
.tiktok-row-title { padding: 10px 12px; font-size: 12.5px; color: #333; line-height: 1.4; height: 52px; overflow: hidden; }

/* ======================================= */
/* 3. DÀN BANNER (BENTO GRID) */
/* ======================================= */
.bento-banners {
    display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 240px;
    gap: 15px; margin-bottom: 30px;
}

.banner-item {
    display: block; position: relative; width: 100%; height: 100%; background: transparent;
    border-radius: var(--radius); overflow: hidden; box-shadow: 0 4px 16px rgba(43,96,222,0.12);
    transition: box-shadow 0.25s var(--ease), transform 0.25s var(--ease);
}
.banner-item:hover { box-shadow: 0 10px 26px rgba(43,96,222,0.22); transform: translateY(-2px); }
.banner-item img {
    width: 100%; height: 100%; object-fit: fill; display: block; transition: transform 0.4s var(--ease), filter 0.3s var(--ease);
    /* Độ sáng (--banner-brightness) đặt riêng theo từng banner trong DB (bảng banners, cột
       brightness - sửa qua admin/banners.php) vì có ảnh sáng sẵn không cần chỉnh thêm.
       Độ bão hòa/tương phản vẫn dùng chung cho đồng bộ màu sắc toàn site. */
    filter: brightness(var(--banner-brightness, 1.15)) saturate(1.28) contrast(1.06);
}
.banner-item:hover img { filter: brightness(calc(var(--banner-brightness, 1.15) + 0.08)) saturate(1.34) contrast(1.07); }

/* Hiệu ứng "lấp lánh" - 1 vệt sáng chéo quét qua banner định kỳ, tạo cảm giác bừng sáng bắt mắt */
.banner-item::before {
    content: ""; position: absolute; top: 0; left: -60%; width: 40%; height: 100%; z-index: 3;
    background: linear-gradient(115deg, transparent 0%, rgba(255,255,255,0.55) 50%, transparent 100%);
    transform: skewX(-20deg); pointer-events: none;
    animation: banner-shine 4.5s ease-in-out infinite;
}
.banner-sub::before { animation-delay: calc(var(--shine-delay, 0) * 1s); }
.banner-item:nth-of-type(1)::before { --shine-delay: 0.3; }
.banner-item:nth-of-type(2)::before { --shine-delay: 0.9; }
.banner-item:nth-of-type(3)::before { --shine-delay: 1.5; }
.banner-item:nth-of-type(4)::before { --shine-delay: 2.1; }
@keyframes banner-shine {
    0% { left: -60%; }
    18%, 100% { left: 130%; }
}
.banner-sub:hover img { transform: scale(1.035); }
.banner-main { grid-column: span 2; grid-row: span 2; background: transparent; }

/* SLIDER CHÍNH CỦA BANNER TO */
.slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 0.5s ease-in-out; z-index: 1; }
.slide.active { opacity: 1; z-index: 2; }


/* ======================================= */
/* 4. KHU VỰC SẢN PHẨM & SLIDER (CAROUSEL) */
/* ======================================= */
.product-section {
    background-color: #ffffff; border-radius: var(--radius); padding: 22px 20px 20px; box-shadow: var(--shadow-sm); margin-bottom: 24px;
    border-top: 3px solid transparent;
    background-image: linear-gradient(#fff, #fff), linear-gradient(90deg, var(--primary), var(--accent));
    background-origin: border-box; background-clip: padding-box, border-box;
}

/* Màu nền xen kẽ cho các khối "... Nổi Bật" ở trang chủ (render_product_carousel tự gán vòng lặp
   6 màu) - nền chỉ ánh màu nhẹ theo hướng chéo (đậm ở góc, nhạt dần về giữa) để không lấn át thẻ
   sản phẩm màu trắng bên trong, viền trên đổi màu theo cho đồng bộ. */
.product-section.section-theme-1 { background-image: linear-gradient(135deg, #eaf1ff 0%, #fff 55%), linear-gradient(90deg, #2b60de, #6fa1ff); }
.product-section.section-theme-2 { background-image: linear-gradient(135deg, #f6efff 0%, #fff 55%), linear-gradient(90deg, #7c3aed, #c4b5fd); }
.product-section.section-theme-3 { background-image: linear-gradient(135deg, #fff5e6 0%, #fff 55%), linear-gradient(90deg, #f59e0b, #fcd34d); }
.product-section.section-theme-4 { background-image: linear-gradient(135deg, #ffeef5 0%, #fff 55%), linear-gradient(90deg, #ec4899, #fbcfe8); }
.product-section.section-theme-5 { background-image: linear-gradient(135deg, #e6fbff 0%, #fff 55%), linear-gradient(90deg, #06b6d4, #a5f3fc); }
.product-section.section-theme-6 { background-image: linear-gradient(135deg, #ecfdf1 0%, #fff 55%), linear-gradient(90deg, #16a34a, #86efac); }

/* Khối video đầu trang - làm nổi bật để tạo cảm giác uy tín ngay từ đầu (viền gradient rực rỡ
   + nền hơi ánh màu thay vì trắng phẳng, đỡ đơn điệu) */
.trust-video-section {
    border: 2px solid transparent;
    background:
        linear-gradient(135deg, #f1f5ff 0%, #fff 45%, #fff7ef 100%) padding-box,
        linear-gradient(120deg, var(--primary), #ff3b3b, var(--accent), var(--primary)) border-box;
    background-size: 200% 200%, 300% 300%;
    animation: trust-border-flow 6s ease infinite;
}
@keyframes trust-border-flow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.section-title { font-size: 20px; letter-spacing: 0.3px; margin-bottom: 22px; display: flex; align-items: center; font-weight: 700; color: #2a2f3d; }
.section-title::before { content: ""; display: inline-block; width: 5px; height: 22px; background-color: var(--primary); margin-right: 12px; border-radius: 3px; }

/* Cấu trúc trượt ngang (thư viện Swiper - xem includes/footer.php phần khởi tạo .product-swiper) */
.product-swiper { position: relative; width: 100%; padding: 15px 4px 20px; }
.product-swiper .swiper-wrapper { align-items: stretch; }

/* THẺ SẢN PHẨM */
.product-card {
    background-color: #ffffff; border-radius: var(--radius); padding: 15px;
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
    position: relative; border: 1px solid #eef0f5;
    width: 240px; flex-shrink: 0; box-sizing: border-box; height: auto;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary); z-index: 10; }
.product-image { width: 100%; height: 200px; object-fit: contain; margin-bottom: 15px; transition: transform 0.3s var(--ease); }
.product-card:hover .product-image { transform: scale(1.04); }

/* Chi tiết thẻ sản phẩm */
.product-link { display: block; }
.product-title { font-size: 15px; font-weight: 600; margin: 0 0 10px; height: 42px; overflow: hidden; color: #222; line-height: 1.4; }
.specs { font-size: 12px; color: #555; margin-bottom: 15px; background: #f8f9fa; padding: 10px; border-radius: var(--radius-sm); border: 1px solid #f0f0f0; }
.specs p { margin: 4px 0; }
.specs strong { color: #333; min-width: 45px; display: inline-block; }
.price-box { display: flex; flex-direction: column; margin-bottom: 15px; }
.old-price { text-decoration: line-through; color: #999; font-size: 13px; margin-bottom: 2px; }
.price { color: var(--danger); font-size: 18px; font-weight: bold; }
.btn-buy { background-color: var(--primary); color: #fff; text-align: center; display: block; padding: 10px; border-radius: var(--radius-sm); font-weight: 600; transition: background 0.25s var(--ease), transform 0.2s var(--ease); font-size: 14px; }
.btn-buy:hover { background-color: var(--primary-dark); color: white; transform: translateY(-1px); }
.discount-badge {
    position: absolute; top: 10px; right: 10px; background: var(--danger); color: white; font-size: 12px; font-weight: bold;
    padding: 4px 9px; border-radius: 20px; z-index: 5;
    animation: badge-pulse 1.8s ease-in-out infinite;
}
@keyframes badge-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(215,0,24,0.5), 0 2px 6px rgba(215,0,24,0.35); }
    50% { box-shadow: 0 0 0 6px rgba(215,0,24,0), 0 2px 6px rgba(215,0,24,0.35); }
}


/* ======================================= */
/* 5. NÚT NEXT/PREV CỦA SLIDER (Swiper - restyle lại nút mặc định cho khớp giao diện web) */
/* ======================================= */
.product-swiper .swiper-button-prev,
.product-swiper .swiper-button-next {
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(43, 96, 222, 0.9); color: #fff; z-index: 20;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    opacity: 0; visibility: hidden; /* Mặc định ẨN, chỉ hiện khi hover vào khối slider */
}
.product-swiper .swiper-button-prev::after,
.product-swiper .swiper-button-next::after { font-size: 16px; font-weight: 700; }
/* HIỆN nút khi hover (Swiper tự thêm class swiper-button-disabled khi đã tới mép cuộn) */
.product-swiper:hover .swiper-button-prev:not(.swiper-button-disabled),
.product-swiper:hover .swiper-button-next:not(.swiper-button-disabled) { opacity: 1; visibility: visible; }
.product-swiper .swiper-button-prev:hover,
.product-swiper .swiper-button-next:hover { background: var(--danger); }
.product-swiper .swiper-button-prev { left: -15px; }
.product-swiper .swiper-button-next { right: -15px; }
.product-swiper .swiper-button-disabled { opacity: 0 !important; visibility: hidden !important; pointer-events: none; }


/* ======================================= */
/* 6. HIỆU ỨNG HOVER POPUP (TOOLTIP CHI TIẾT) */
/* ======================================= */
.hover-detail {
    visibility: hidden; opacity: 0; position: absolute; top: 50%; left: 100%; transform: translate(10px, -50%); 
    width: 300px; background: #ffffff; border: 2px solid var(--primary); border-radius: 8px; padding: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2); z-index: 1000; 
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0s linear 0.2s; pointer-events: none;
}

/* Chống lỗi tràn viền phải */
.product-card:nth-child(4n) .hover-detail, 
.product-card:nth-child(4n-1) .hover-detail {
    left: auto; right: 100%; transform: translate(-10px, -50%);
}
.product-card:hover .hover-detail { visibility: visible; opacity: 1; transform: translate(0, -50%); transition-delay: 0s; }

/* Trang trí Tooltip */
.hover-detail .hd-title { background: var(--primary); color: white; padding: 8px 10px; margin: -15px -15px 15px -15px; border-radius: 6px 6px 0 0; font-weight: bold; font-size: 14px; }
.hover-detail .hd-price { font-size: 18px; font-weight: bold; color: var(--danger); margin-bottom: 10px;}
.hover-detail ul { list-style: none; padding: 0; margin: 0; font-size: 13px; color: #333; }
.hover-detail ul li { margin-bottom: 8px; display: flex; align-items: flex-start; line-height: 1.4; border-bottom: 1px dashed #eee; padding-bottom: 5px;}
.hover-detail ul li strong { min-width: 70px; color: #555; }
.hover-promo { margin-top: 10px; background: #e6f7ff; padding: 10px; border: 1px dashed #91d5ff; color: #0050b3; font-size: 12px; border-radius: 4px; }
/* ======================================= */
/* 7. NÚT LIÊN HỆ & TÙY CHỌN ZALO/MESSENGER */
/* ======================================= */
.contact-action {
    position: relative;
    text-align: center;
    margin-top: 10px;
}

.btn-contact {
    width: 100%;
    background-color: var(--primary); 
    color: #fff; 
    text-align: center; 
    display: block; 
    padding: 10px; 
    border-radius: 6px; 
    font-weight: 600; 
    font-size: 14px; 
    border: none; 
    cursor: pointer;
    transition: background 0.3s;
}

.btn-contact:hover { background-color: var(--primary-dark); }

/* Hộp chứa 2 nút Zalo/Mess (Mặc định ẩn) */
.contact-options {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 100%; /* Nổi lên phía trên nút Liên hệ */
    left: 0;
    width: 100%;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
    padding: 10px;
    margin-bottom: 10px; /* Cách nút Liên hệ 1 khoảng */
    z-index: 2000;
    transition: all 0.3s ease;
    transform: translateY(10px);
    display: flex;
    flex-direction: column;
    gap: 8px;
    box-sizing: border-box;
}

/* Mũi tên nhỏ trỏ xuống dưới */
.contact-options::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: #fff transparent transparent transparent;
}

/* Khi lia chuột vào khối nút thì hiện Popup ra */
.contact-action:hover .contact-options {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

/* Trang trí nút Zalo / Messenger */
.contact-options a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px; /* Khoảng cách giữa icon và chữ */
    padding: 8px;
    border-radius: 6px;
    color: #fff;
    font-weight: bold;
    font-size: 13px;
    text-decoration: none;
    transition: opacity 0.2s;
}
.contact-options a:hover { opacity: 0.8; }

.opt-zalo { background: #0068ff; } /* Màu xanh Zalo */
.opt-mess { background: #0084ff; } /* Màu xanh Facebook */

.contact-options a img {
    width: 20px;   /* Khống chế kích thước icon, tránh bị to quá khổ */
    height: 20px;
    object-fit: contain;
    display: inline-block;
}

/* ======================================= */
/* 8. RESPONSIVE (MOBILE / TABLET) */
/* ======================================= */
@media (max-width: 900px) {
    .top-bar-right { display: none; }
    .header-inner { gap: 12px; }
    .search-box { order: 3; flex-basis: 100%; max-width: 100%; }
    .header-actions { gap: 12px; }
    .action-text small { display: none; }

    .main-layout { flex-direction: column; }
    .sidebar { width: 100%; }

    .bento-banners { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 160px; }
    .banner-main { grid-column: span 2; grid-row: span 1; }

    .footer-grid { grid-template-columns: 1fr 1fr; }

    .floating-contact { right: 12px; bottom: 16px; }
    .fc-btn { width: 46px; height: 46px; font-size: 20px; }
}

@media (max-width: 520px) {
    .footer-grid { grid-template-columns: 1fr; }
    .action-item.action-cta .action-text { display: none; }
    .bento-banners { grid-template-columns: 1fr; grid-auto-rows: 180px; }
    .banner-main { grid-column: span 1; }
}

/* ======================================= */
/* 9. VIDEO & MẠNG XÃ HỘI TIÊU BIỂU */
/* ======================================= */
.video-social-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 18px; align-items: stretch; }
.video-embed { position: relative; width: 100%; padding-top: 56.25%; border-radius: var(--radius-sm); overflow: hidden; background: #000; }
.video-embed iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }

.social-cta-stack { display: flex; flex-direction: column; gap: 14px; }
.social-cta {
    flex: 1; display: flex; align-items: center; gap: 14px; padding: 16px;
    border-radius: var(--radius-sm); color: #fff; transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.social-cta:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.social-cta strong { display: block; font-size: 14.5px; }
.social-cta small { display: block; font-size: 12px; opacity: 0.85; margin-top: 2px; font-weight: 400; }
.social-cta-icon { font-size: 22px; width: 42px; height: 42px; flex-shrink: 0; border-radius: 50%; background: rgba(255,255,255,0.18); display: flex; align-items: center; justify-content: center; }
.social-cta-youtube { background: linear-gradient(135deg, #ff3b3b, #c4141f); }
.social-cta-tiktok { background: linear-gradient(135deg, #232323, #010101); }

@media (max-width: 900px) {
    .video-social-grid { grid-template-columns: 1fr; }
}

/* ======================================= */
/* 10. TRANG CHI TIẾT SẢN PHẨM (product.php) */
/* ======================================= */
.product-detail-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; }
.product-detail-image { position: relative; background: #f8f9fa; border-radius: var(--radius); padding: 20px; display: flex; align-items: center; justify-content: center; min-height: 320px; }
.product-detail-image img { width: 100%; max-height: 420px; object-fit: contain; }
.product-detail-title { font-size: 25px; margin: 0 0 8px; color: #1c2333; line-height: 1.35; }
.product-spec-table { width: 100%; border-collapse: collapse; margin-bottom: 18px; }
.product-spec-table th, .product-spec-table td { text-align: left; padding: 9px 12px; font-size: 14px; border-bottom: 1px solid #f0f2f7; }
.product-spec-table th { color: #777; font-weight: 600; width: 130px; background: #f8f9fa; }
.product-spec-table td { color: #222; font-weight: 500; }
.product-detail-desc { font-size: 14.5px; line-height: 1.8; color: #444; background: #f8f9fa; padding: 16px; border-radius: var(--radius-sm); }

@media (max-width: 800px) {
    .product-detail-grid { grid-template-columns: 1fr; gap: 20px; }
}

/* ======================================= */
/* 11. CAM KẾT DỊCH VỤ (TRUST STRIP) */
/* ======================================= */
/* Dải màu navy làm nền cho khối "cam kết dịch vụ" - đỡ đơn điệu so với toàn trắng, đồng màu với footer */
.trust-strip {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 24px;
    background: linear-gradient(120deg, var(--navy), #24345c); border-radius: var(--radius); padding: 18px;
    box-shadow: var(--shadow-sm);
}
.trust-item {
    background: rgba(255,255,255,0.07); border-radius: var(--radius-sm);
    padding: 14px; display: flex; align-items: center; gap: 12px;
    border: 1px solid rgba(255,255,255,0.12); transition: transform 0.2s var(--ease), background 0.2s var(--ease);
}
.trust-item:hover { transform: translateY(-3px); background: rgba(255,255,255,0.14); }
.trust-icon {
    font-size: 22px; width: 44px; height: 44px; flex-shrink: 0; border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.3), rgba(255,255,255,0.1)); display: flex; align-items: center; justify-content: center;
}
.trust-item strong { display: block; font-size: 13.5px; color: #fff; }
.trust-item small { display: block; font-size: 12px; color: #b9c4de; margin-top: 2px; }

@media (max-width: 900px) { .trust-strip { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .trust-strip { grid-template-columns: 1fr; } }

/* ======================================= */
/* 12. DANH SÁCH VIDEO (bên dưới video chính) */
/* ======================================= */
.video-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 18px; }
.video-list-item { cursor: pointer; border-radius: var(--radius-sm); overflow: hidden; border: 2px solid transparent; transition: border-color 0.2s var(--ease), transform 0.2s var(--ease); }
.video-list-item:hover { transform: translateY(-3px); }
.video-list-item.active { border-color: var(--primary); }
.video-list-thumb { position: relative; width: 100%; padding-top: 56.25%; background: #000; }
.video-list-thumb img { position: absolute; top:0; left:0; width: 100%; height: 100%; object-fit: cover; }
.video-play-badge {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 36px; height: 36px; border-radius: 50%; background: rgba(0,0,0,0.55); color: #fff;
    display: flex; align-items: center; justify-content: center; font-size: 14px;
}
.video-list-title { font-size: 12.5px; color: #333; margin: 8px 2px 0; line-height: 1.4; height: 34px; overflow: hidden; }

/* ======================================= */
/* 13. POPUP LIÊN HỆ (Zalo/Messenger - hiện giữa màn hình) */
/* ======================================= */
.contact-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    z-index: 5000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    animation: contactFadeIn 0.2s var(--ease);
}
.contact-modal-overlay[hidden] { display: none; }

@keyframes contactFadeIn { from { opacity: 0; } to { opacity: 1; } }

.contact-modal {
    background: #fff;
    border-radius: var(--radius);
    max-width: 420px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 26px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    animation: contactPopIn 0.25s var(--ease);
}

@keyframes contactPopIn {
    from { opacity: 0; transform: translateY(12px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.contact-modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 30px;
    height: 30px;
    border: none;
    background: #f1f3f8;
    color: #555;
    border-radius: 50%;
    font-size: 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}
.contact-modal-close:hover { background: #e2e6f0; }

.contact-modal-body {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
    padding-right: 24px;
}
.contact-modal-image {
    width: 72px;
    height: 72px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    background: #f6f7fb;
    border: 1px solid #eef0f5;
    flex-shrink: 0;
}
.contact-modal-title { margin: 0 0 4px; font-size: 16px; color: #1a2b4d; line-height: 1.35; }
.contact-modal-price { margin: 0; font-size: 15px; font-weight: 700; color: var(--danger); }

.contact-modal-copybox {
    background: #f6f8ff;
    border: 1px dashed var(--primary);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    margin-bottom: 14px;
}
.contact-modal-copylabel { margin: 0 0 6px; font-size: 12.5px; color: var(--primary-dark); font-weight: 600; }
.contact-modal-message { margin: 0; font-size: 13.5px; color: #333; line-height: 1.5; }

.contact-modal-hint { margin: 0 0 18px; font-size: 13px; color: #666; line-height: 1.5; }

.contact-modal-actions { display: flex; gap: 10px; }
.contact-modal-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px;
    border-radius: var(--radius-sm);
    color: #fff;
    font-weight: 700;
    font-size: 14px;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.2s;
}
.contact-modal-btn:hover { opacity: 0.88; transform: translateY(-1px); }
.contact-modal-btn img { width: 20px; height: 20px; object-fit: contain; }
.contact-modal-zalo { background: #0068ff; }
.contact-modal-mess { background: #0084ff; }

@media (max-width: 480px) {
    .contact-modal { padding: 20px; }
    .contact-modal-actions { flex-direction: column; }
}

@media (max-width: 900px) { .video-list { grid-template-columns: repeat(2, 1fr); } }

/* ======================================= */
/* 14. TRANG XEM VIDEO RIÊNG (video.php) */
/* ======================================= */
.video-page-grid { display: grid; grid-template-columns: 380px 1fr; gap: 32px; }

.video-page-player {
    position: relative;
    width: 100%;
    aspect-ratio: 9 / 16;
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.video-page-player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.video-page-info { min-width: 0; }

@media (max-width: 700px) {
    .video-page-grid { grid-template-columns: 1fr; gap: 20px; }
    .video-page-player { max-width: 320px; margin: 0 auto; }
}