/* ==========================================================================
   LASHINGVIETNAM – stylesheet duy nhat (khong bootstrap, khong jquery)
   ========================================================================== */

:root {
    --primary: #354fa3;
    --primary-d: #0c1c55;
    --accent: #f96e2d;
    --ink: #1d2333;
    --muted: #5d6478;
    --line: #e3e7ef;
    --bg: #ffffff;
    --bg-soft: #f5f7fb;
    --radius: 10px;
    --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 8px 24px rgba(16, 24, 40, .06);
    --wrap: 1200px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
    margin: 0;
    font: 16px/1.65 var(--font);
    color: var(--ink);
    background: var(--bg);
}

img { max-width: 100%; height: auto; }
/* <picture> chi la vo boc WebP – de <img> lam con truc tiep khi tinh bo cuc */
picture { display: contents; }
a { color: var(--primary); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .6em; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.3rem); }
h2 { font-size: clamp(1.3rem, 1.1rem + .9vw, 1.7rem); }
h3 { font-size: 1.12rem; }
p  { margin: 0 0 1em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 18px; }
.narrow { max-width: 820px; }
.sec { padding: 34px 18px; }
.sec-h { margin-bottom: .3em; }
.sec-d { color: var(--muted); margin-bottom: 1.2em; }
.sec-more { margin-top: 18px; }
.empty { color: var(--muted); background: var(--bg-soft); padding: 18px; border-radius: var(--radius); }

.sr-only, .skip:not(:focus) {
    position: absolute !important; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip:focus {
    position: absolute; left: 12px; top: 12px; z-index: 999;
    background: var(--primary); color: #fff; padding: 10px 16px; border-radius: 8px;
}
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ------------------------------------------------------------------ header */
.site-head { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--line); }
.topbar { background: var(--primary-d); color: #dbe3f7; font-size: .84rem; }
.topbar a { color: #fff; }
.topbar-in { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 6px 18px; flex-wrap: wrap; }
.tb-sub { opacity: .75; margin-left: 10px; }
.tb-right { display: flex; gap: 14px; align-items: center; }
.tb-zalo { background: #0068ff; padding: 2px 10px; border-radius: 20px; font-weight: 600; }

.head-in { display: flex; align-items: center; gap: 18px; padding: 10px 18px; flex-wrap: wrap; }
.brand img { display: block; width: auto; height: 46px; }

.mainnav ul { display: flex; gap: 2px; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.mainnav > ul > li { position: relative; }
.mainnav a {
    display: block; padding: 10px 12px; color: var(--ink);
    font-weight: 600; font-size: .95rem; border-radius: 8px;
}
.mainnav a:hover, .mainnav a[aria-current] { background: var(--bg-soft); color: var(--primary); text-decoration: none; }
.mainnav .submenu {
    position: absolute; left: 0; top: 100%; min-width: 250px; display: none;
    flex-direction: column; background: #fff; border: 1px solid var(--line);
    border-radius: var(--radius); box-shadow: var(--shadow); padding: 6px; z-index: 20;
}
.mainnav .has-sub:hover .submenu,
.mainnav .has-sub:focus-within .submenu { display: flex; }

.search { display: flex; margin-left: auto; }
.search input {
    border: 1px solid var(--line); border-right: 0; border-radius: 8px 0 0 8px;
    padding: 9px 12px; font: inherit; font-size: .92rem; min-width: 190px; background: var(--bg-soft);
}
.search button {
    border: 1px solid var(--primary); background: var(--primary); color: #fff;
    border-radius: 0 8px 8px 0; padding: 0 14px; cursor: pointer; font-size: 1rem;
}
.search-big { margin: 0 0 24px; max-width: 560px; }
.search-big input { min-width: 0; flex: 1; }
.search-big .btn { border-radius: 0 8px 8px 0; }

.navtoggle, .burger { display: none; }

/* ------------------------------------------------------------------ breadcrumb */
.crumb { background: var(--bg-soft); border-bottom: 1px solid var(--line); font-size: .87rem; }
.crumb ol {
    max-width: var(--wrap); margin: 0 auto; padding: 9px 18px;
    list-style: none; display: flex; flex-wrap: wrap; gap: 8px;
}
.crumb li + li::before { content: "›"; margin-right: 8px; color: var(--muted); }
.crumb [aria-current] { color: var(--muted); }

/* ------------------------------------------------------------------ hero */
.hero { background: linear-gradient(160deg, #f2f6ff 0%, #ffffff 65%); border-bottom: 1px solid var(--line); }
.hero-in { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; align-items: center; padding: 44px 18px; }
.hero h1 { margin-bottom: .4em; }
.lead { font-size: 1.05rem; color: var(--muted); }
.hero-act { display: flex; gap: 10px; flex-wrap: wrap; margin: 20px 0 22px; }
.hero-facts { display: flex; gap: 26px; list-style: none; padding: 0; margin: 0; flex-wrap: wrap; font-size: .92rem; color: var(--muted); }
.hero-facts strong { display: block; font-size: 1.5rem; color: var(--primary); }
.hero-img img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; object-fit: cover; }

/* ------------------------------------------------------------------ nut */
.btn {
    display: inline-block; padding: 11px 20px; border-radius: 8px; font-weight: 700;
    background: var(--primary); color: #fff; border: 1px solid var(--primary); cursor: pointer;
    font: inherit; font-weight: 700; line-height: 1.3;
}
.btn:hover { background: var(--primary-d); border-color: var(--primary-d); text-decoration: none; color: #fff; }
.btn-2 { background: var(--accent); border-color: var(--accent); }
.btn-2:hover { background: #e05a1a; border-color: #e05a1a; }
.btn-3 { background: #fff; color: var(--primary); }
.btn-3:hover { background: var(--bg-soft); color: var(--primary-d); }

/* ------------------------------------------------------------------ luoi + the */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .18s, transform .18s;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card-img { display: block; aspect-ratio: 3/2; overflow: hidden; background: var(--bg-soft); }
.card-p .card-img { aspect-ratio: 1/1; background: #fff; }
.card-p .card-img img { object-fit: contain; }
.card-img img { width: 100%; height: 100%; object-fit: cover; }
/* anh trong the cung hien chu thich khi re chuot */
.card-img .fig-wrap { display: block; width: 100%; height: 100%; }
.card-img .fig-tip {
    font-size: .78rem; padding: 6px 10px; bottom: 8px; max-width: calc(100% - 20px);
    display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden;
}
.hero-img .fig-wrap { display: block; width: 100%; }
.card-body { padding: 14px 15px 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.card-t { font-size: 1rem; margin: 0; }
.card-t a { color: var(--ink); }
.card-t a:hover { color: var(--primary); }
.card-d { color: var(--muted); font-size: .9rem; margin: 0; }
.card-price { color: var(--accent); font-weight: 700; margin: 0; }
.more { font-weight: 700; margin-top: auto; }

.cat-card {
    display: flex; flex-direction: column; gap: 4px; padding: 20px;
    border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-soft);
}
.cat-card:hover { background: #fff; box-shadow: var(--shadow); text-decoration: none; }
.cat-t { font-weight: 700; color: var(--ink); }
.cat-n { color: var(--muted); font-size: .88rem; }

/* ------------------------------------------------------------------ bo cuc bai viet */
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 34px; padding: 30px 18px; }
.post-meta { color: var(--muted); font-size: .9rem; display: flex; gap: 8px; flex-wrap: wrap; }
.post-lead { font-size: 1.06rem; color: var(--muted); border-left: 3px solid var(--accent); padding-left: 14px; }

.post-body { font-size: 1.02rem; }
.post-body h2 { margin-top: 1.6em; padding-bottom: .25em; border-bottom: 2px solid var(--bg-soft); }
.post-body h3 { margin-top: 1.3em; }
.post-body ul, .post-body ol { padding-left: 22px; }
.post-body li { margin-bottom: .4em; }
.post-body blockquote {
    margin: 1.2em 0; padding: 12px 18px; background: var(--bg-soft);
    border-left: 4px solid var(--primary); border-radius: 0 8px 8px 0;
}
.post-body a { text-decoration: underline; text-underline-offset: 2px; }
.autolink { font-weight: 600; }
.anchor { opacity: 0; color: var(--muted); text-decoration: none; font-weight: 400; }
h2:hover .anchor, h3:hover .anchor, .anchor:focus { opacity: .55; }

.table-scroll { overflow-x: auto; margin: 1.2em 0; }
.post-body table { border-collapse: collapse; width: 100%; min-width: 480px; font-size: .95rem; }
.post-body th, .post-body td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; }
.post-body th { background: var(--bg-soft); }

/* --- muc luc --- */
.toc {
    background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 14px 18px; margin: 22px 0;
}
.toc-h { font-weight: 700; margin: 0 0 .4em; }
.toc ol { margin: 0; padding-left: 20px; }
.toc li { margin-bottom: .25em; }
.toc .lv3 { margin-left: 16px; font-size: .94rem; }

/* ------------------------------------------------------------------ ANH + CHU THICH + TOOLTIP */
figure.fig { margin: 22px 0; text-align: center; }
.fig-wrap { position: relative; display: inline-block; max-width: 100%; }
.fig-wrap img { border-radius: var(--radius); box-shadow: var(--shadow); display: block; margin: 0 auto; }
.fig figcaption {
    margin-top: 8px; font-size: .88rem; color: var(--muted); font-style: italic;
}
/* tooltip hien khi re chuot vao anh */
.fig-tip {
    position: absolute; left: 50%; bottom: 12px; transform: translate(-50%, 8px);
    max-width: min(92%, 460px); background: rgba(12, 28, 85, .94); color: #fff;
    padding: 8px 13px; border-radius: 8px; font-size: .85rem; line-height: 1.4;
    opacity: 0; visibility: hidden; transition: opacity .18s ease, transform .18s ease;
    pointer-events: none; box-shadow: 0 6px 20px rgba(0, 0, 0, .28); text-align: center;
}
.fig-wrap:hover .fig-tip,
.fig-wrap:focus-within .fig-tip { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
@media (hover: none) { .fig-tip { display: none; } }

.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gallery figure.fig { margin: 0; }
.gallery .fig-wrap { width: 100%; }
.gallery .fig-wrap img { width: 100%; aspect-ratio: 3/2; object-fit: cover; }

/* ------------------------------------------------------------------ video */
.video { position: relative; margin: 22px 0; }
.video-play {
    display: block; width: 100%; padding: 0; border: 0; background: #000;
    border-radius: var(--radius); overflow: hidden; cursor: pointer; position: relative; line-height: 0;
}
.video-play img { width: 100%; aspect-ratio: 16/9; object-fit: cover; opacity: .88; }
.video-btn {
    position: absolute; inset: 0; display: grid; place-items: center;
    font-size: 2.6rem; color: #fff; text-shadow: 0 2px 12px rgba(0, 0, 0, .6);
}
.video-play:hover img { opacity: 1; }
.video iframe { width: 100%; aspect-ratio: 16/9; border: 0; border-radius: var(--radius); display: block; }
.video-cap { font-size: .88rem; color: var(--muted); margin-top: 8px; font-style: italic; }

/* ------------------------------------------------------------------ san pham */
.prod { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 34px; padding: 30px 0; }
.prod-gal { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; align-content: start; }
.prod-gal .fig { margin: 0; }
.prod-gal .fig-wrap { display: block; width: 100%; }
.prod-gal .fig-main { grid-column: 1 / -1; }
.prod-gal img { width: 100%; aspect-ratio: 1/1; object-fit: contain; background: #fff; }
.prod-gal .fig-main img { aspect-ratio: 4/3; object-fit: contain; }
.prod-gal figcaption { font-size: .78rem; }
.prod-cat { color: var(--muted); font-size: .92rem; }
.prod-price { font-size: 1.5rem; font-weight: 800; color: var(--accent); margin: 6px 0 14px; }
.prod-act { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0; }
.prod-trust { list-style: none; padding: 0; margin: 0; font-size: .93rem; color: var(--muted); }
.prod-trust li { padding-left: 22px; position: relative; margin-bottom: 6px; }
.prod-trust li::before { content: "✔"; position: absolute; left: 0; color: #16a34a; }
.prod-tab { border-top: 1px solid var(--line); padding-top: 24px; margin-top: 24px; }

/* ------------------------------------------------------------------ sidebar */
.side-b {
    background: var(--bg-soft); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 16px 18px; margin-bottom: 20px;
}
.side-b h2 { font-size: 1.02rem; text-transform: uppercase; letter-spacing: .02em; }
.side-list { list-style: none; padding: 0; margin: 0; }
.side-list li { border-bottom: 1px dashed var(--line); padding: 7px 0; font-size: .93rem; }
.side-list li:last-child { border: 0; }
.side-cta { background: var(--primary-d); color: #fff; border-color: var(--primary-d); }
.side-cta a { color: #fff; }
.side-cta .big { font-size: 1.5rem; font-weight: 800; margin: 0 0 .3em; }

/* ------------------------------------------------------------------ CTA / chips / pager */
.cta {
    background: linear-gradient(120deg, var(--primary) 0%, var(--primary-d) 100%);
    color: #fff; padding: 26px 28px; border-radius: var(--radius); margin: 32px 0;
}
.cta h2 { color: #fff; margin-bottom: .3em; }
.cta p { color: #dbe3f7; }
.cta-act { display: flex; gap: 10px; flex-wrap: wrap; margin: 0; }

.chips { list-style: none; padding: 0; margin: 0 0 22px; display: flex; flex-wrap: wrap; gap: 8px; }
.chips a {
    display: inline-block; padding: 6px 13px; border-radius: 20px;
    background: var(--bg-soft); border: 1px solid var(--line); color: var(--ink); font-size: .89rem;
}
.chips a:hover { background: var(--primary); color: #fff; border-color: var(--primary); text-decoration: none; }
.chips-lg a { font-size: .95rem; padding: 9px 16px; }
.chip-n { opacity: .6; font-size: .82rem; }

.pager ul { list-style: none; display: flex; gap: 6px; padding: 0; margin: 28px 0; flex-wrap: wrap; }
.pager a, .pager span {
    display: block; padding: 8px 14px; border: 1px solid var(--line);
    border-radius: 8px; color: var(--ink);
}
.pager a:hover { background: var(--bg-soft); text-decoration: none; }
.pager [aria-current] { background: var(--primary); color: #fff; border-color: var(--primary); }

.post-tags { margin: 24px 0; font-size: .92rem; color: var(--muted); }
.post-tags a {
    display: inline-block; margin: 3px 6px 3px 0; padding: 4px 11px;
    background: var(--bg-soft); border-radius: 20px; font-size: .87rem;
}
.rel { margin-top: 34px; }
.othercat { margin-top: 34px; }
.proj-note { margin-top: 30px; }

/* ------------------------------------------------------------------ lien he */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; }
.fcontact { list-style: none; padding: 0; margin: 0 0 24px; }
.fcontact li { padding: 5px 0; border-bottom: 1px dashed var(--line); }
.branches { padding-left: 20px; }
.branches li { margin-bottom: 10px; }
.branches strong { display: block; }
.contact-form label { display: block; font-weight: 600; margin-bottom: 4px; font-size: .93rem; }
.contact-form input, .contact-form textarea {
    width: 100%; padding: 10px 12px; border: 1px solid var(--line);
    border-radius: 8px; font: inherit; background: #fff;
}
.contact-form .hp { position: absolute; left: -9999px; }
.ok { background: #e8f7ee; border: 1px solid #b7e4c7; color: #14532d; padding: 14px 16px; border-radius: 8px; }
.err { background: #fdecec; border: 1px solid #f5c2c2; color: #8a1c1c; padding: 12px 16px; border-radius: 8px; }

/* ------------------------------------------------------------------ footer */
.site-foot { background: var(--primary-d); color: #c9d3ee; margin-top: 44px; padding: 40px 0 0; font-size: .93rem; }
.site-foot a { color: #fff; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1.3fr 1fr 1fr; gap: 30px; }
.fh { font-size: 1rem; color: #fff; text-transform: uppercase; letter-spacing: .02em; }
.fh.mt { margin-top: 22px; }
.fp { color: #c9d3ee; }
.flist, .fbranch { list-style: none; padding: 0; margin: 0; }
.flist li, .fbranch li { padding: 4px 0; }
.foot-grid .fcontact li { border-bottom-color: rgba(255, 255, 255, .12); }
.tagcloud { border-top: 1px solid rgba(255, 255, 255, .12); margin-top: 30px; padding-top: 22px; }
.tagcloud a { display: inline-block; margin: 3px 5px 3px 0; padding: 3px 11px; background: rgba(255, 255, 255, .1); border-radius: 20px; font-size: .84rem; }
.copy { border-top: 1px solid rgba(255, 255, 255, .12); margin-top: 22px; padding: 16px 18px; text-align: center; font-size: .86rem; }

/* ------------------------------------------------------------------ nut lien he nhanh */
.quick { position: fixed; right: 14px; bottom: 14px; display: grid; gap: 8px; z-index: 60; }
.quick .q {
    width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center;
    color: #fff; font-weight: 700; font-size: .78rem; box-shadow: var(--shadow); text-decoration: none;
}
.q-tel { background: #16a34a; font-size: 1.2rem; }
.q-zalo { background: #0068ff; }
.q-mes { background: #7b3fe4; font-size: 1.2rem; }

/* ------------------------------------------------------------------ responsive */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
    .layout { grid-template-columns: 1fr; }
    .prod { grid-template-columns: 1fr; }
    .hero-in { grid-template-columns: 1fr; }
    .foot-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
    .head-in { flex-wrap: wrap; gap: 10px; }
    .brand { flex: 0 0 auto; }
    .brand img { height: 40px; }
    .burger {
        display: flex; flex-direction: column; gap: 5px; margin-left: auto;
        padding: 10px; cursor: pointer; order: 3;
    }
    .burger span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; }
    .mainnav { order: 5; flex-basis: 100%; display: none; }
    .navtoggle:checked ~ .mainnav { display: block; }
    .mainnav ul { flex-direction: column; }
    .mainnav .submenu { position: static; display: flex; border: 0; box-shadow: none; background: var(--bg-soft); }
    .search { order: 4; flex: 0 0 100%; margin: 4px 0; }
    .search input { flex: 1; min-width: 0; }
    .grid-3, .grid-4, .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .gallery, .prod-gal { grid-template-columns: repeat(2, 1fr); }
    .contact { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
    .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
    .gallery { grid-template-columns: repeat(2, 1fr); }
    .foot-grid { grid-template-columns: 1fr; }
    .hero-facts { gap: 18px; }
    .topbar-in { font-size: .78rem; }
}

@media print {
    .site-head, .site-foot, .quick, .cta, .side, .crumb, .pager { display: none !important; }
    body { font-size: 12pt; }
    .fig-tip { display: none; }
}