/* ============================================================
   Moban 8-10-14 — main.css
   Aesthetic: "Thác nước gỉ sắt" — Pinterest-style waterfall grid,
   rust-red & cream editorial warmth, split center-logo masthead.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Paytone+One&family=Be+Vietnam+Pro:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

/* ---------- Guards ---------- */
html, body { overflow-x: hidden; }

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

img { max-width: 100%; height: auto; }

/* ---------- Design tokens ---------- */
:root {
    --rust: #A44A3F;
    --rust-bright: #C05A4A;
    --wine: #55251D;
    --wine-deep: #3C1712;
    --cream: #F1E4D8;
    --cream-soft: #F7EEE4;
    --card: #FFF9F2;
    --ink: #33201B;
    --ink-soft: #7A5C52;
    --gold: #D9A441;
    --teal: #4E7A6B;
    --amber: #B0713F;
    --radius: 8px;
    --shadow: 0 10px 26px rgba(85, 37, 29, .14);
    --shadow-lift: 0 18px 40px rgba(85, 37, 29, .22);
    --font-display: 'Paytone One', 'Be Vietnam Pro', sans-serif;
    --font-body: 'Be Vietnam Pro', sans-serif;
}

body {
    margin: 0;
    background-color: var(--cream);
    background-image:
        radial-gradient(ellipse 900px 420px at 50% -120px, rgba(164, 74, 63, .16), transparent 70%),
        repeating-linear-gradient(45deg, rgba(85, 37, 29, .014) 0 2px, transparent 2px 6px);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.65;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 22px; min-width: 0; }
.container-narrow { max-width: 880px; }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.25; margin: 0 0 .5em; color: var(--wine); font-weight: 400; }

a { color: var(--rust); text-decoration: none; }

/* ============================================================
   Header — split center-logo masthead
   ============================================================ */
.site-header { position: sticky; top: 0; z-index: 90; box-shadow: 0 4px 18px rgba(60, 23, 18, .18); }

.header-topbar { background: var(--wine-deep); color: var(--cream); font-size: 13px; }
.header-topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 7px 0; }
.topbar-tag { opacity: .85; letter-spacing: .04em; }

.btn-auth {
    display: inline-block; padding: 4px 16px; border-radius: var(--radius);
    font-weight: 600; font-size: 13px; transition: transform .18s ease, box-shadow .18s ease;
}
.btn-auth:hover { transform: translateY(-1px); }
.btn-login { color: var(--cream); border: 1px solid rgba(241, 228, 216, .45); margin-right: 8px; }
.btn-register { background: var(--rust-bright); color: #fff; }

.header-main { background: linear-gradient(180deg, var(--wine) 0%, var(--wine-deep) 100%); }
.header-main-inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    grid-template-areas: "navleft logo navright";
    align-items: center;
    gap: 24px;
    padding: 12px 0;
}
.split-nav { display: flex; gap: 6px; min-width: 0; }
.split-nav-left { grid-area: navleft; justify-content: flex-end; }
.split-nav-right { grid-area: navright; justify-content: flex-start; }
.site-logo { grid-area: logo; text-align: center; }
.logo-img { max-height: 62px; width: auto; display: inline-block; filter: drop-shadow(0 3px 8px rgba(0, 0, 0, .35)); }

.split-link {
    position: relative; padding: 8px 14px; border-radius: var(--radius);
    color: var(--cream); font-weight: 600; font-size: 15px; white-space: nowrap;
    transition: background .2s ease, color .2s ease;
}
.split-link::after {
    content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 2px;
    background: var(--gold); border-radius: 2px; transform: scaleX(0); transform-origin: left;
    transition: transform .25s ease;
}
.split-link:hover { color: #fff; }
.split-link:hover::after { transform: scaleX(1); }
.split-link-cta { background: var(--rust); color: #fff; }
.split-link-cta:hover { background: var(--rust-bright); }
.split-link-cta::after { display: none; }

.nav-toggle { display: none; background: none; border: 0; padding: 10px 8px; cursor: pointer; grid-area: navleft; justify-self: start; }
.nav-toggle span { display: block; width: 26px; height: 3px; margin: 5px 0; border-radius: 3px; background: var(--cream); transition: transform .25s ease, opacity .25s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.mobile-nav { background: var(--wine-deep); padding: 12px 22px 20px; display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a { color: var(--cream); padding: 10px 12px; border-radius: var(--radius); font-weight: 600; }
.mobile-nav a:hover { background: rgba(241, 228, 216, .1); }
.mobile-nav-auth { display: flex; gap: 10px; margin-top: 12px; }
.mobile-nav[hidden] { display: none; }

/* ============================================================
   Section scaffolding
   ============================================================ */
.section-head { text-align: center; margin: 52px auto 34px; max-width: 680px; }
.section-eyebrow {
    display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .22em;
    text-transform: uppercase; color: var(--rust); background: rgba(164, 74, 63, .12);
    border: 1px solid rgba(164, 74, 63, .28); padding: 4px 14px; border-radius: 999px; margin-bottom: 14px;
}
.eyebrow-light { color: var(--gold); background: rgba(217, 164, 65, .14); border-color: rgba(217, 164, 65, .4); }
.section-title { font-size: clamp(26px, 4vw, 40px); margin-bottom: 10px; }
.section-sub { color: var(--ink-soft); margin: 0; }

/* Category chip strip */
.cat-strip { padding-top: 26px; }
.cat-strip-inner { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.cat-chip {
    padding: 8px 18px; border-radius: var(--radius); background: var(--card);
    border: 1px solid rgba(85, 37, 29, .14); color: var(--wine); font-weight: 600; font-size: 14px;
    box-shadow: 0 3px 10px rgba(85, 37, 29, .07); transition: all .2s ease;
}
.cat-chip:hover { background: var(--rust); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }

/* ============================================================
   Waterfall / Pinterest masonry grid (CSS Grid, 3 height tiers)
   ============================================================ */
.pin-section { padding-bottom: 20px; }

.pin-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 84px;
    grid-auto-flow: dense;
    gap: 20px;
}
.pin-grid > * { min-width: 0; }

.pin-tall { grid-row: span 5; }   /* ~420px */
.pin-mid  { grid-row: span 4; }   /* ~336px */
.pin-short{ grid-row: span 3; }   /* ~252px */

.pin-card {
    border-radius: var(--radius); overflow: hidden; background: var(--card);
    box-shadow: var(--shadow); transition: transform .28s ease, box-shadow .28s ease;
    opacity: 0; transform: translateY(26px);
}
.pin-card.is-visible { opacity: 1; transform: translateY(0); }
.pin-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); }

.pin-link { display: block; position: relative; height: 100%; color: inherit; }

.pin-media { position: absolute; inset: 0; }
.pin-media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s ease; }
.pin-card:hover .pin-media img { transform: scale(1.06); }

.pin-body {
    position: absolute; left: 0; right: 0; bottom: 6px; padding: 44px 16px 12px;
    background: linear-gradient(180deg, rgba(60, 23, 18, 0) 0%, rgba(60, 23, 18, .82) 46%, rgba(60, 23, 18, .94) 100%);
    color: var(--cream);
}
.pin-cat {
    display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .08em;
    text-transform: uppercase; padding: 3px 10px; border-radius: 999px;
    background: var(--rust); color: #fff; margin-bottom: 6px;
}
.pin-title { font-family: var(--font-display); font-size: 17px; color: #fff; margin: 0 0 4px; }
.pin-rating { font-size: 13px; color: var(--gold); margin-bottom: 6px; }
.pin-dl {
    font-size: 13px; font-weight: 700; color: var(--gold); opacity: 0;
    transform: translateX(-8px); transition: opacity .25s ease, transform .25s ease; display: inline-block;
}
.pin-card:hover .pin-dl { opacity: 1; transform: translateX(0); }

/* Category bottom bar */
.pin-bar { position: absolute; left: 0; right: 0; bottom: 0; height: 6px; display: block; }
.pin-cat-slot .pin-bar, .pin-cat-slot .pin-cat { background: var(--rust); }
.pin-cat-live .pin-bar, .pin-cat-live .pin-cat { background: var(--gold); }
.pin-cat-fish .pin-bar, .pin-cat-fish .pin-cat { background: var(--teal); }
.pin-cat-table .pin-bar, .pin-cat-table .pin-cat { background: var(--wine); }
.pin-cat-xoso .pin-bar, .pin-cat-xoso .pin-cat { background: var(--amber); }
.pin-cat-live .pin-cat, .pin-cat-xoso .pin-cat { color: var(--wine-deep); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    display: inline-block; padding: 13px 30px; border-radius: var(--radius);
    font-weight: 700; font-size: 15px; letter-spacing: .02em; cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn-dl {
    background: linear-gradient(135deg, var(--gold), #E8B858);
    color: var(--wine-deep); box-shadow: 0 8px 22px rgba(217, 164, 65, .4);
}
.btn-dl:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(217, 164, 65, .55); }
.btn-outline { border: 2px solid var(--rust); color: var(--rust); background: transparent; }
.btn-outline:hover { background: var(--rust); color: #fff; }
.section-cta { text-align: center; margin-top: 34px; }

/* ============================================================
   Download banner
   ============================================================ */
.dl-banner { padding: 40px 0; }
.dl-banner-inner {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    grid-template-areas: "text art";
    align-items: center;
    gap: 30px;
    background:
        radial-gradient(circle at 88% 18%, rgba(217, 164, 65, .25), transparent 46%),
        linear-gradient(120deg, var(--wine) 0%, var(--rust) 115%);
    border-radius: var(--radius); padding: 46px 48px; color: var(--cream);
    box-shadow: var(--shadow-lift); position: relative; overflow: hidden;
}
.dl-banner-text { grid-area: text; min-width: 0; }
.dl-banner-art { grid-area: art; min-width: 0; }
.dl-banner-art img {
    width: 100%; height: 240px; object-fit: cover; border-radius: var(--radius);
    border: 3px solid rgba(241, 228, 216, .35); transform: rotate(2deg);
    box-shadow: 0 16px 34px rgba(0, 0, 0, .35);
}
.dl-banner-title { color: #fff; font-size: clamp(24px, 3.2vw, 36px); margin-bottom: 12px; }
.dl-banner-sub { opacity: .85; margin: 0 0 24px; }

.inline-dl-banner {
    display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap;
    background: linear-gradient(120deg, var(--wine), var(--rust)); color: var(--cream);
    border-radius: var(--radius); padding: 22px 28px; margin: 34px 0; box-shadow: var(--shadow);
}
.inline-dl-banner p { margin: 0; font-weight: 600; }

/* ============================================================
   News grid
   ============================================================ */
.news-section { padding-bottom: 30px; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-grid > * { min-width: 0; }
.news-card {
    background: var(--card); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); border-bottom: 5px solid var(--rust);
    transition: transform .25s ease, box-shadow .25s ease;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); }
.news-link { display: block; color: inherit; }
.news-thumb { height: 168px; overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.news-card:hover .news-thumb img { transform: scale(1.06); }
.news-body { padding: 18px 20px 22px; }
.news-title { font-size: 17px; margin-bottom: 8px; }
.news-excerpt { font-size: 14px; color: var(--ink-soft); margin: 0 0 12px; }
.news-date { font-size: 12.5px; color: var(--rust); font-weight: 600; letter-spacing: .04em; }

/* ============================================================
   FAQ accordion
   ============================================================ */
.faq-section { padding-bottom: 70px; }
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
    background: var(--card); border: 1px solid rgba(85, 37, 29, .14);
    border-left: 5px solid var(--rust); border-radius: var(--radius);
    box-shadow: 0 4px 14px rgba(85, 37, 29, .08); overflow: hidden;
    transition: box-shadow .25s ease, border-color .25s ease;
}
.faq-item.open { box-shadow: var(--shadow); border-left-color: var(--gold); }
.faq-q {
    width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
    background: none; border: 0; cursor: pointer; text-align: left;
    padding: 18px 22px; font-family: var(--font-body); font-size: 16px; font-weight: 700; color: var(--wine);
}
.faq-icon {
    flex: 0 0 auto; width: 28px; height: 28px; border-radius: 50%;
    background: var(--rust); color: #fff; display: grid; place-items: center;
    font-size: 18px; font-weight: 400; line-height: 1; transition: transform .3s ease, background .3s ease;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--gold); color: var(--wine-deep); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p { margin: 0; padding: 0 22px 20px; color: var(--ink-soft); }
.faq-item.open .faq-a { max-height: 340px; }

/* ============================================================
   Article / single / page
   ============================================================ */
.article-section { padding: 40px 0 70px; }
.article-card {
    background: var(--card); border-radius: var(--radius); padding: 40px 44px;
    box-shadow: var(--shadow); border-top: 6px solid var(--rust);
}
.article-cat {
    display: inline-block; background: var(--rust); color: #fff; font-size: 12px;
    font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
    padding: 4px 12px; border-radius: 999px; margin-bottom: 12px;
}
.article-title { font-size: clamp(24px, 3.4vw, 36px); }
.article-meta { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13.5px; color: var(--ink-soft); margin-bottom: 24px; }
.article-thumb { margin-bottom: 26px; border-radius: var(--radius); overflow: hidden; }
.article-content { font-size: 16.5px; }
.article-content img { border-radius: var(--radius); }
.article-tags { margin-top: 26px; }
.article-tags a {
    display: inline-block; background: var(--cream-soft); border: 1px solid rgba(85, 37, 29, .16);
    color: var(--wine); font-size: 13px; padding: 4px 12px; border-radius: 999px; margin: 0 6px 6px 0;
}
.article-tags a:hover { background: var(--rust); color: #fff; }

.related-block { margin-top: 44px; }
.related-title { font-size: 24px; text-align: center; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.related-grid > * { min-width: 0; }
.related-card {
    background: var(--card); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); color: inherit; border-bottom: 4px solid var(--gold);
    transition: transform .25s ease;
}
.related-card:hover { transform: translateY(-4px); }
.related-thumb { height: 140px; overflow: hidden; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; }
.related-name { font-size: 15px; padding: 14px 16px; margin: 0; }

.entry-content h2, .entry-content h3 { margin-top: 1.2em; }
.entry-content blockquote {
    margin: 1.4em 0; padding: 16px 22px; border-left: 4px solid var(--gold);
    background: var(--cream-soft); border-radius: 0 var(--radius) var(--radius) 0;
}

/* Pagination */
.pagination-nav { text-align: center; margin: 40px 0 20px; }
.pagination-nav .nav-links { display: inline-flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.pagination-nav .page-numbers {
    display: inline-block; min-width: 42px; padding: 9px 12px; border-radius: var(--radius);
    background: var(--card); color: var(--wine); font-weight: 700; box-shadow: 0 3px 10px rgba(85, 37, 29, .08);
}
.pagination-nav .page-numbers.current { background: var(--rust); color: #fff; }
.pagination-nav .page-numbers:hover { background: var(--wine); color: var(--cream); }
.empty-note { text-align: center; color: var(--ink-soft); padding: 40px 0; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer { background: var(--wine-deep); color: var(--cream); margin-top: 20px; padding: 50px 0 30px; }
.footer-widgets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; padding-bottom: 34px; }
.footer-widgets:empty { display: none; }
.footer-widget { min-width: 0; }
.footer-widget .widget-title { color: var(--gold); font-size: 17px; }
.footer-widget a { color: var(--cream); opacity: .82; }
.footer-widget a:hover { opacity: 1; color: #fff; }
.footer-bottom { border-top: 1px solid rgba(241, 228, 216, .16); padding-top: 26px; text-align: center; }
.disclaimer-text { font-size: 13.5px; opacity: .85; max-width: 760px; margin: 18px auto 10px; line-height: 1.7; }
.footer-copy { font-size: 12.5px; opacity: .55; margin-top: 14px; }

/* ============================================================
   Area-grid overrides (grid-template-areas lives only here)
   ============================================================ */
@media (max-width: 900px) {
    .dl-banner-inner {
        grid-template-columns: 1fr;
        grid-template-areas: "art" "text";
        padding: 32px 26px;
        text-align: center;
    }
    .dl-banner-art img { transform: rotate(0); height: 200px; }
}

@media (max-width: 768px) {
    .header-main-inner {
        grid-template-columns: auto 1fr;
        grid-template-areas: "navleft logo";
    }
    .split-nav { display: none; }
    .nav-toggle { display: block; }
    .site-logo { justify-self: center; }
    .footer-widgets { grid-template-columns: 1fr; }
}