/* ============================================================
   DNTU LIBRARY — Design System
   Màu chủ đạo: #A4193D (đỏ), #FFDFB9 (cam nhạt), #F5F0F1
   Font: Playfair Display (tiêu đề), Roboto (nội dung)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;700&family=Roboto:wght@300;400;500;700&display=swap');

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
    --dntu-primary: #A4193D;
    /* --dntu-primary-dk cap nhat 2026-08-26: #7d1230 cu qua muoi/xam (S=75%,L=28%
       trong cung ho mau voi #A4193D) - doi sang cung Hue~344 nhung sang/tuoi hon
       (S=80%,L=33%) de bac thang dk(33%) < primary(37%) < lt(45%) van dong bo,
       khong con lech tong so voi mau chu dao. -dk-rgb dung cho rgba() can alpha
       (VD overlay gradient) de chi 1 nguon gia tri duy nhat, tranh hardcode lai. */
    --dntu-primary-dk: #981135;
    --dntu-primary-dk-rgb: 152, 17, 53;
    --dntu-primary-lt: #c4234d;
    --dntu-accent: #FFDFB9;
    --dntu-bg-soft: #F5F0F1;
    --dntu-dark: #AB1F24;/* #2E141B; - CHI dung cho be mat toi (footer, hero overlay) */
    --dntu-ink: #2E141B;/* mau chu tieu de - tach khoi --dntu-dark 2026-09-01 */
    --dntu-white: #FFFFFF;
    --dntu-text: #2E141B;
    --dntu-text-muted: #6b5a5f;
    --dntu-border: #e8dde0;

    /* Kenh RGB cho Tailwind (tailwind/tailwind.config.js doc cac bien nay qua
       rgba(var(--x-rgb), <alpha-value>)) => doi mau CHI o day, Tailwind tu theo,
       ho tro luon tw-bg-dntu-primary/10... Phai giu dung dinh dang "R, G, B". */
    --dntu-primary-rgb: 164, 25, 61;
    --dntu-primary-lt-rgb: 196, 35, 77;
    --dntu-accent-rgb: 255, 223, 185;
    --dntu-bg-soft-rgb: 245, 240, 241;
    --dntu-dark-rgb: 171, 31, 36;
    --dntu-ink-rgb: 46, 20, 27;
    --dntu-muted-rgb: 107, 90, 95;
    --dntu-border-rgb: 232, 221, 224;

    --dntu-radius: 8px;
    --dntu-radius-sm: 4px;
    --dntu-shadow: 0 2px 12px rgba(164,25,61,0.10);
    --dntu-shadow-hover: 0 6px 24px rgba(164,25,61,0.18);
    --dntu-transition: all 0.25s ease;
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Roboto', 'Open Sans', Arial, sans-serif;
}

/* ── Base Reset ─────────────────────────────────────────────── */
body {
    font-family: var(--font-body) !important;
    font-size: 16px;
    font-weight: 400;
    color: var(--dntu-text);
    background: var(--dntu-white);
    line-height: 1.6;
}

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3, .dntu-heading {
    font-family: var(--font-heading);
    color: var(--dntu-ink);
    line-height: 1.3;
}

.dntu-section-title {
    font-family: var(--font-heading);
    font-size: 33.5px;
    font-weight: 700;
    color: var(--dntu-ink);
    text-align: center;
    margin: 0 0 8px;
    position: relative;
}
.dntu-section-title.light { color: var(--dntu-white); }

.dntu-section-subtitle {
    text-align: center;
    color: var(--dntu-text-muted);
    font-size: 18px;
    margin-bottom: 32px;
}
.dntu-section-subtitle.light { color: rgba(255,255,255,0.8); }

/* ── Divider dưới tiêu đề ───────────────────────────────────── */
.dntu-divider {
    width: 48px;
    height: 3px;
    background: var(--dntu-primary);
    margin: 10px auto 28px;
    border-radius: 2px;
}
.dntu-divider.light { background: var(--dntu-accent); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn-dntu {
    display: inline-block;
    padding: 10px 28px;
    border-radius: var(--dntu-radius-sm);
    font-family: var(--font-body);
    font-size: 16.5px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--dntu-transition);
    cursor: pointer;
    border: 2px solid transparent;
    text-decoration: none !important;
}
.btn-dntu-primary {
    background: var(--dntu-primary);
    color: var(--dntu-white) !important;
    border-color: var(--dntu-primary);
}
.btn-dntu-primary:hover {
    background: var(--dntu-primary-dk);
    border-color: var(--dntu-primary-dk);
    color: var(--dntu-white) !important;
    transform: translateY(-1px);
    box-shadow: var(--dntu-shadow-hover);
}
.btn-dntu-outline {
    background: transparent;
    color: var(--dntu-white) !important;
    border-color: var(--dntu-white);
}
.btn-dntu-outline:hover {
    background: var(--dntu-white);
    color: var(--dntu-primary) !important;
}
.btn-dntu-accent {
    background: var(--dntu-accent);
    color: var(--dntu-primary) !important;
    border-color: var(--dntu-accent);
    font-weight: 700;
}
.btn-dntu-accent:hover {
    background: #ffe8c4;
    border-color: #ffe8c4;
    color: var(--dntu-primary-dk) !important;
}

/* ── Card Component ─────────────────────────────────────────── */
.dntu-card {
    background: var(--dntu-white);
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    transition: var(--dntu-transition);
    overflow: hidden;
}
.dntu-card:hover {
    box-shadow: var(--dntu-shadow-hover);
    transform: translateY(-3px);
}
.dntu-card-img {
    width: 100%;
    overflow: hidden;
    position: relative;
}
.dntu-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
}
.dntu-card:hover .dntu-card-img img { transform: scale(1.04); }
.dntu-card-body { padding: 16px; }
.dntu-card-title {
    font-family: var(--font-body);
    font-size: 18px;
    font-weight: 700;
    color: var(--dntu-ink);
    margin: 0 0 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}
.dntu-card-text {
    font-size: 16px;
    color: var(--dntu-text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}
.dntu-card-date {
    font-size: 14.5px;
    color: var(--dntu-text-muted);
    margin-top: 8px;
}
.dntu-card-link {
    font-size: 15.5px;
    color: var(--dntu-primary);
    font-weight: 600;
    text-decoration: none;
}
.dntu-card-link:hover { color: var(--dntu-primary-dk); text-decoration: underline; }

/* ── Patron dashboard section (form/list panel — trang cá nhân, đặt phòng,
   nộp lưu chiểu...) — được TrangCaNhan.aspx định nghĩa cục bộ trước đây, nay
   đưa vào đây để dùng chung cho mọi trang trên MasterPageLibrary.Master thay
   vì lặp lại CSS ở từng trang. ─────────────────────────────────────────── */
.patron-section {
    background:#fff; border-radius:8px;
    box-shadow:0 2px 12px rgba(164,25,61,.10);
    padding:22px 26px; margin-bottom:24px;
}
.patron-section-title {
    font-size: 16.5px; font-weight:700; color:var(--dntu-primary);
    border-left:4px solid var(--dntu-primary); padding-left:12px;
    margin:0 0 18px; text-transform:uppercase; letter-spacing:.5px;
}

/* ── Section blocks ─────────────────────────────────────────── */
.dntu-section { padding: 56px 0; }
.dntu-section-alt { background: var(--dntu-bg-soft); }
.dntu-section-primary {
    background: var(--dntu-primary);
    color: var(--dntu-white);
}
.dntu-section-dark {
    background: var(--dntu-dark);
    color: var(--dntu-white);
}

/* ── HEADER / NAVBAR ─────────────────────────────────────────── */
/* Header dùng chung: markup ở ucSiteHeader.ascx (Tailwind), hành vi ở assets/js/dntu-site.js.
   Chỉ giữ ở CSS thường phần Tailwind không biểu diễn được: menu do VB sinh ra (dntu-nav-*)
   và trạng thái đổ bóng khi cuộn. */
#header { transition: box-shadow .25s ease; }
#header.header--scrolled { box-shadow: 0 4px 20px rgba(var(--dntu-ink-rgb), .20) !important; }

/* Top info bar */
.dntu-topbar {
    background: var(--dntu-dark);
    padding: 6px 0;
    font-size: 15.5px;
}
.dntu-topbar a {
    color: rgba(255,255,255,0.75);
    margin-right: 16px;
    text-decoration: none;
    transition: color 0.2s;
}
.dntu-topbar a:hover { color: var(--dntu-accent); }

/* Logo row */
.dntu-logo-row {
    background: var(--dntu-white);
    padding: 10px 0;
    border-bottom: 1px solid var(--dntu-border);
}
.dntu-logo-row .navbar-brand { padding: 0; }
.dntu-logo-row .logo { height: 70px; width: auto; }

/* ══ Main nav ══════════════════════════════════════════════════ */
.dntu-navbar {
    background: var(--dntu-primary);
    margin: 0;
    padding: 0;
    width: 100%;
    /* Sticky — không phụ thuộc Tailwind CDN */
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

/* Wrapper trong nav: căn giữa nội dung */
.dntu-nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: stretch;
    min-height: 50px;
    position: relative;
}

/* ── Mobile bar (brand + toggle): ẩn trên desktop ───────────── */
.dntu-nav-mobile-bar {
    display: none;
    width: 100%;
    align-items: center;
    justify-content: space-between;
    min-height: 50px;
}
.dntu-nav-mobile-brand {
    color: rgba(255,255,255,0.92);
    font-size: 16.5px;
    font-weight: 700;
}
.dntu-nav-toggle {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.4);
    border-radius: 4px;
    padding: 7px 11px;
    cursor: pointer;
    color: #fff;
    font-size: 20px;
    line-height: 1;
    transition: background 0.15s;
}
.dntu-nav-toggle:hover { background: rgba(255,255,255,0.12); }

/* ── Nav collapse panel ─────────────────────────────────────── */
/* Desktop: panel luôn hiện, flex ngang */
.dntu-nav-collapse {
    display: flex;
    align-items: stretch;
    flex: 1;
}

/* ── Nav list (ul) ───────────────────────────────────────────── */
.dntu-nav-list {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: stretch;
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
}

/* ── Nav items cấp 1 ─────────────────────────────────────────── */
.dntu-nav-list > li { position: relative; }

.dntu-nav-list > li > a {
    display: flex;
    align-items: center;
    gap: 5px;
    color: rgba(255,255,255,0.92) !important;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0 15px;
    height: 50px;
    white-space: nowrap;
    text-decoration: none !important;
    border-bottom: 3px solid transparent;
    transition: background 0.18s, color 0.18s, border-color 0.18s;
    box-sizing: border-box;
}
.dntu-nav-list > li > a:hover,
.dntu-nav-list > li.active > a,
.dntu-nav-list > li.open > a {
    background: rgba(0,0,0,0.18);
    color: var(--dntu-accent) !important;
    border-bottom-color: var(--dntu-accent);
}

/* ── Trang chủ icon ──────────────────────────────────────────── */
.dntu-nav-home > a {
    font-size: 22.5px !important;
    padding: 0 18px !important;
}

/* ── Tài khoản ───────────────────────────────────────────────── */
.dntu-nav-account > a {
    background: rgba(255,255,255,0.08) !important;
    border-radius: 4px;
    margin: auto 4px;
    padding: 6px 14px !important;
    height: auto !important;
    border-bottom: none !important;
    font-size: 15.5px !important;
    align-self: center;
}
.dntu-nav-account > a:hover {
    background: rgba(255,255,255,0.18) !important;
    border-bottom: none !important;
}

/* ── Caret dropdown ──────────────────────────────────────────── */
.dntu-caret {
    font-size: 10.5px !important;
    opacity: 0.75;
    transition: transform 0.2s;
}
.dntu-nav-list > li.open > a .dntu-caret,
.dntu-nav-list > li.show > a .dntu-caret { transform: rotate(180deg); }

/* ══ Dropdown menu ═════════════════════════════════════════════ */
.dntu-nav-list .dropdown-menu,
.dntu-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1000;
    display: none;
    background: var(--dntu-dark) !important;
    border: none !important;
    border-top: 3px solid var(--dntu-accent) !important;
    border-radius: 0 0 6px 6px !important;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3) !important;
    padding: 6px 0 !important;
    min-width: 230px;
    margin: 0 !important;
    list-style: none;
}
/* Hiện khi li có class open hoặc show (BS4 compat) */
.dntu-nav-list > li.open > .dropdown-menu,
.dntu-nav-list > li.open > .dntu-dropdown,
.dntu-nav-list > li.show > .dropdown-menu,
.dntu-nav-list > li.show > .dntu-dropdown,
.dntu-nav-list > li > .dropdown-menu.show { display: block; }

/* Dropdown items */
.dntu-dropdown .dropdown-item,
.dntu-dropdown > li > a {
    display: block;
    color: rgba(255,255,255,0.85) !important;
    font-size: 15.5px !important;
    padding: 9px 20px !important;
    font-weight: 500;
    background: transparent !important;
    transition: background 0.15s, padding-left 0.15s, color 0.15s;
    white-space: normal;
    text-decoration: none !important;
}
.dntu-dropdown .dropdown-item:hover,
.dntu-dropdown > li > a:hover {
    background: var(--dntu-primary) !important;
    color: #fff !important;
    padding-left: 28px !important;
}
.dntu-dropdown > li { border-bottom: 1px solid rgba(255,255,255,0.06); }
.dntu-dropdown > li:last-child { border-bottom: none; }

/* ── HOVER dropdown trên desktop ────────────────────────────── */
@media (min-width: 992px) {
    .dntu-nav-list > li.dropdown:hover > .dropdown-menu,
    .dntu-nav-list > li.dropdown:hover > .dntu-dropdown {
        display: block !important;
    }
    .dntu-has-child { cursor: default; pointer-events: auto; }
}

/* ── Mobile nav ─────────────────────────────────────────────── */
@media (max-width: 991px) {
    /* Hiện mobile bar, ẩn panel theo mặc định */
    .dntu-nav-mobile-bar { display: flex; }
    .dntu-nav-inner { flex-wrap: wrap; }
    .dntu-nav-collapse {
        display: none;
        width: 100%;
        flex-direction: column;
        background: var(--dntu-primary);
        padding-bottom: 8px;
    }
    .dntu-nav-collapse.dntu-open { display: flex; }

    /* List dọc */
    .dntu-nav-list { flex-direction: column; }
    .dntu-nav-list > li > a {
        height: auto;
        padding: 12px 16px !important;
        border-bottom: 1px solid rgba(255,255,255,0.08) !important;
        border-left: 3px solid transparent;
        white-space: normal;
    }
    .dntu-nav-list > li > a:hover,
    .dntu-nav-list > li.active > a {
        border-left-color: var(--dntu-accent) !important;
        border-bottom-color: rgba(255,255,255,0.08) !important;
    }

    /* Dropdown trên mobile: static, click-open */
    .dntu-nav-list .dropdown-menu,
    .dntu-dropdown {
        position: static !important;
        float: none !important;
        box-shadow: none !important;
        border-top: none !important;
        border-left: 3px solid var(--dntu-accent) !important;
        background: rgba(0,0,0,0.2) !important;
        margin-left: 16px !important;
        border-radius: 0 !important;
        display: none;
    }
    .dntu-nav-list > li.open > .dropdown-menu,
    .dntu-nav-list > li.open > .dntu-dropdown { display: block; }

    .dntu-dropdown .dropdown-item,
    .dntu-dropdown > li > a {
        padding: 9px 16px !important;
        font-size: 15.5px !important;
        color: rgba(255,255,255,0.8) !important;
    }

    /* Tài khoản mobile */
    .dntu-nav-account > a {
        margin: 4px 0 !important;
        border-radius: 0 !important;
        align-self: unset;
        padding: 12px 16px !important;
    }
}

/* ── Banner ─────────────────────────────────────────────────── */
.dntu-banner {
    position: relative;
    overflow: hidden;
    min-height: 420px;
    background: var(--dntu-dark);
}
.dntu-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(46,20,27,0.75) 0%, rgba(164,25,61,0.45) 100%);
    z-index: 1;
}
.dntu-banner-content {
    position: relative;
    z-index: 2;
    padding: 80px 0;
    color: var(--dntu-white);
    text-align: center;
}
.dntu-banner-content h1 {
    font-family: var(--font-heading);
    font-size: 50px;
    color: var(--dntu-white);
    text-shadow: 0 2px 8px rgba(0,0,0,0.4);
    margin-bottom: 16px;
}

/* ── Search Box ─────────────────────────────────────────────── */
.dntu-search-box {
    background: rgba(255,255,255,0.97);
    border-radius: 50px;
    padding: 6px 6px 6px 24px;
    display: flex;
    align-items: center;
    box-shadow: 0 4px 24px rgba(0,0,0,0.15);
    max-width: 680px;
    margin: 0 auto;
}
.dntu-search-box input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 17px;
    color: var(--dntu-text);
    font-family: var(--font-body);
}
.dntu-search-box .btn-search {
    background: var(--dntu-primary);
    color: var(--dntu-white);
    border: none;
    border-radius: 50px;
    padding: 10px 28px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
}
.dntu-search-box .btn-search:hover { background: var(--dntu-primary-dk); }

/* ── Resource Cards (6-card grid) ───────────────────────────── */
.dntu-resource-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
@media (max-width: 767px) { .dntu-resource-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .dntu-resource-grid { grid-template-columns: 1fr; } }

.dntu-resource-card {
    background: var(--dntu-white);
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    overflow: hidden;
    transition: var(--dntu-transition);
    text-decoration: none !important;
    display: flex; flex-direction: column;
    border-top: 3px solid transparent;
}
.dntu-resource-card:hover {
    box-shadow: var(--dntu-shadow-hover);
    transform: translateY(-4px);
    border-top-color: var(--dntu-primary);
}
/* Anh dai dien 16:10 - dat file vao assets/img/resources/<slug>.jpg */
.dntu-resource-card .rc-media {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    position: relative;
    background: var(--dntu-bg-soft) repeating-linear-gradient(135deg,
        rgba(164,25,61,.05) 0 8px, transparent 8px 16px);
}
.dntu-resource-card .rc-media img {
    width: 100%; height: 100%; object-fit: cover; display: block;
    transition: transform 0.45s ease;
}
.dntu-resource-card:hover .rc-media img { transform: scale(1.05); }
.dntu-resource-card .rc-media::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(var(--dntu-primary-dk-rgb), .28), transparent 55%);
    opacity: 0; transition: opacity .25s ease;
}
.dntu-resource-card:hover .rc-media::after { opacity: 1; }
.dntu-resource-card .rc-body {
    padding: 18px 20px 20px;
    display: flex; flex-direction: column; gap: 6px; flex: 1;
}
.dntu-resource-card .rc-title,
.dntu-resource-card .rc-label {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 700;
    color: var(--dntu-ink);
    margin: 0;
    line-height: 1.35;
}
.dntu-resource-card .rc-desc {
    font-size: 15.5px; color: var(--dntu-text-muted);
    margin: 0; line-height: 1.55; flex: 1;
}
.dntu-resource-card .rc-more {
    margin-top: 8px;
    font-size: 15px; font-weight: 600; color: var(--dntu-primary);
    display: inline-flex; align-items: center; gap: 7px;
}
.dntu-resource-card .rc-more i { transition: transform .25s ease; }
.dntu-resource-card:hover .rc-more i { transform: translateX(4px); }

/* ── Support Cards ──────────────────────────────────────────── */
.dntu-support-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
@media (max-width: 600px) { .dntu-support-grid { grid-template-columns: 1fr; } }

.dntu-support-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--dntu-white);
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    padding: 20px 22px;
    text-decoration: none !important;
    transition: var(--dntu-transition);
    border-left: 4px solid var(--dntu-primary);
}
.dntu-support-card:hover {
    box-shadow: var(--dntu-shadow-hover);
    transform: translateX(4px);
}
.dntu-support-card .sc-icon {
    font-size: 33.5px;
    color: var(--dntu-primary);
    flex-shrink: 0;
    width: 44px;
    text-align: center;
}
.dntu-support-card .sc-body .sc-title,
.dntu-support-card .sc-body h5 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dntu-ink);
    margin: 0 0 4px;
    line-height: 1.3;
}
.dntu-support-card .sc-body .sc-desc,
.dntu-support-card .sc-body p {
    font-size: 15.5px;
    color: var(--dntu-text-muted);
    margin: 0;
    line-height: 1.4;
}

/* ── Document Cards (Section 5) ─────────────────────────────── */
.dntu-doc-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
@media (max-width: 767px) { .dntu-doc-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .dntu-doc-grid { grid-template-columns: 1fr; } }

.dntu-doc-card {
    background: rgba(255,255,255,0.12);
    border-radius: var(--dntu-radius);
    overflow: hidden;
    transition: var(--dntu-transition);
    border: 1px solid rgba(255,255,255,0.18);
}
.dntu-doc-card:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-3px);
}
.dntu-doc-cover {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    display: block;
}
.dntu-doc-info { padding: 14px; }
.dntu-doc-title {
    font-size: 16.5px;
    font-weight: 700;
    color: var(--dntu-white);
    margin: 0 0 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}
.dntu-doc-author {
    font-size: 14.5px;
    color: rgba(255,255,255,0.7);
    margin: 0 0 10px;
}
.dntu-doc-link {
    font-size: 14.5px;
    color: var(--dntu-accent);
    text-decoration: none;
    font-weight: 600;
}
.dntu-doc-link:hover { color: var(--dntu-white); }

/* ── News Cards (Section 6) ─────────────────────────────────── */
.dntu-news-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
@media (max-width: 991px) { .dntu-news-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 575px) { .dntu-news-grid { grid-template-columns: 1fr; } }

.dntu-news-card {
    background: var(--dntu-white);
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    overflow: hidden;
    transition: var(--dntu-transition);
    text-decoration: none !important;
    display: block;
}
.dntu-news-card:hover {
    box-shadow: var(--dntu-shadow-hover);
    transform: translateY(-3px);
}
.dntu-news-img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
    background: var(--dntu-bg-soft);
}
.dntu-news-body { padding: 14px; }
.dntu-news-cat {
    display: inline-block;
    background: var(--dntu-accent);
    color: var(--dntu-primary);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 2px 8px;
    border-radius: 3px;
    margin-bottom: 8px;
}
.dntu-news-title {
    font-size: 16.5px;
    font-weight: 700;
    color: var(--dntu-ink);
    margin: 0 0 6px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.45;
}
.dntu-news-date {
    font-size: 14.5px;
    color: var(--dntu-text-muted);
}

/* ── Announcement Timeline (Section 7) ──────────────────────── */
.dntu-announce-list { list-style: none; margin: 0; padding: 0; }
.dntu-announce-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 12px 0;
    border-bottom: 1px dashed var(--dntu-border);
}
.dntu-announce-item:last-child { border-bottom: none; }
.dntu-announce-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--dntu-primary);
    margin-top: 5px;
    flex-shrink: 0;
}
.dntu-announce-content .dntu-announce-title {
    font-size: 16.5px;
    font-weight: 600;
    color: var(--dntu-ink);
    margin: 0 0 3px;
    line-height: 1.4;
}
.dntu-announce-content .dntu-announce-date {
    font-size: 14.5px;
    color: var(--dntu-text-muted);
}

/* ── Product Slider (Giới thiệu tài liệu) ───────────────────── */
.dntu-product-slider { margin: 0 -8px; }   /* bù padding 8px của từng card */
.dntu-product-slider .slick-track { display: flex; }
.dntu-product-slider .slick-slide { height: auto; }
.dntu-product-slider .slick-slide > div { height: 100%; }
.dntu-product-slider .dntu-doc-card { height: 100%; }

/* Mũi tên Slick trên nền tối */
.dntu-slick-prev,
.dntu-slick-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    background: rgba(255,255,255,0.15);
    border: none;
    border-radius: 50%;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    color: #fff;
    font-size: 16.5px;
    transition: background 0.2s;
}
.dntu-slick-prev { left: -18px; }
.dntu-slick-next { right: -18px; }
.dntu-slick-prev:hover,
.dntu-slick-next:hover { background: rgba(255,255,255,0.35); }
.slick-disabled.dntu-slick-prev,
.slick-disabled.dntu-slick-next { opacity: 0.35; cursor: default; }

/* ── Photo Gallery (Section 8) ──────────────────────────────── */
.dntu-gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 180px;       /* auto-rows thay repeat(2,180px) — không tạo rows rỗng */
    gap: 8px;
}
@media (max-width: 767px) {
    .dntu-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 140px;
    }
    .dntu-gallery-grid .gi-main { grid-column: span 1; grid-row: span 1; }
}
.gi {
    position: relative; overflow: hidden; border-radius: var(--dntu-radius-sm);
    background: rgba(255,255,255,0.08); /* placeholder khi ảnh không load */
    min-height: 140px;
}
.gi-main { grid-column: span 2; grid-row: span 2; }
.gi img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.35s ease;
}
.gi:hover img { transform: scale(1.06); }
.gi-overlay {
    position: absolute; inset: 0;
    background: rgba(46,20,27,0);
    display: flex; align-items: center; justify-content: center;
    transition: background 0.25s;
}
.gi:hover .gi-overlay { background: rgba(46,20,27,0.45); }
.gi-overlay i {
    color: transparent;
    font-size: 33.5px;
    transition: color 0.2s;
}
.gi:hover .gi-overlay i { color: var(--dntu-white); }

/* ── Gallery Lightbox ───────────────────────────────────────── */
/* Lightbox được append vào body qua JS → position:fixed luôn đúng */
#dntu-lightbox {
    position: fixed; inset: 0; z-index: 99999;
    background: rgba(0,0,0,0.92);
    display: flex; align-items: center; justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
}
#dntu-lightbox.dntu-lb-active {
    opacity: 1;
}
@keyframes dntu-lb-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}
#dntu-lb-inner {
    position: relative; max-width: 90vw; max-height: 88vh;
    display: flex; flex-direction: column; align-items: center; gap: 12px;
}
#dntu-lb-img {
    max-width: 90vw; max-height: 80vh;
    object-fit: contain;
    border-radius: var(--dntu-radius);
    box-shadow: 0 8px 48px rgba(0,0,0,0.6);
    display: block;
}
#dntu-lb-caption {
    color: rgba(255,255,255,0.75);
    font-size: 15.5px; text-align: center;
    margin: 0; line-height: 1.5;
    max-width: 600px;
}
/* shared button base */
#dntu-lightbox button {
    position: absolute;
    background: rgba(255,255,255,0.12);
    border: none; border-radius: 50%;
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 21.5px;
    cursor: pointer;
    transition: background 0.2s;
}
#dntu-lightbox button:hover { background: rgba(255,255,255,0.28); }
#dntu-lb-close { top: 16px; right: 16px; font-size: 24px; }
#dntu-lb-prev  { left: 12px;  top: 50%; transform: translateY(-50%); }
#dntu-lb-next  { right: 12px; top: 50%; transform: translateY(-50%); }
@media (max-width: 767px) {
    #dntu-lb-prev { left: 4px; }
    #dntu-lb-next { right: 4px; }
    #dntu-lightbox button { width: 36px; height: 36px; font-size: 18px; }
}

/* ── Quote Slider (Section 9) ───────────────────────────────── */
.dntu-quote-slider {
    background: var(--dntu-bg-soft);
    padding: 56px 0;
    text-align: center;
}
.dntu-quote-text {
    font-family: var(--font-heading);
    font-size: 26px;
    font-style: italic;
    color: var(--dntu-ink);
    max-width: 680px;
    margin: 0 auto 16px;
    line-height: 1.6;
}
.dntu-quote-text::before { content: '\201C'; color: var(--dntu-primary); font-size: 47.5px; line-height: 0; vertical-align: -12px; margin-right: 4px; }
.dntu-quote-text::after  { content: '\201D'; color: var(--dntu-primary); font-size: 47.5px; line-height: 0; vertical-align: -12px; margin-left: 4px; }
.dntu-quote-author {
    font-size: 16.5px;
    font-weight: 700;
    color: var(--dntu-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.dntu-quote-dots { margin-top: 20px; display: flex; justify-content: center; gap: 8px; }
.dntu-quote-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--dntu-border);
    cursor: pointer;
    transition: background 0.2s;
    border: none;
    padding: 0;
}
.dntu-quote-dot.active { background: var(--dntu-primary); }

/* ── Footer ─────────────────────────────────────────────────── */

.tw-bg-dntu-dark {
    background-color: var(--dntu-dark);
}
.dntu-footer {
    background: var(--dntu-dark);
    color: rgba(255,255,255,0.85);
    padding: 48px 0 0;
}
.dntu-footer h5 {
    color: var(--dntu-accent);
    font-size: 15.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 18px;
}
.dntu-footer p, .dntu-footer li { font-size: 16px; color: rgba(255,255,255,0.72); line-height: 1.7; }
.dntu-footer a { color: rgba(255,255,255,0.72); text-decoration: none; }
.dntu-footer a:hover { color: var(--dntu-accent); }
.dntu-footer-social { display: flex; gap: 10px; margin-top: 14px; }
.dntu-footer-social a {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--dntu-primary);
    display: flex; align-items: center; justify-content: center;
    color: var(--dntu-white) !important;
    font-size: 18px;
    transition: background 0.2s;
}
.dntu-footer-social a:hover { background: var(--dntu-accent); color: var(--dntu-ink) !important; }
.dntu-footer-bottom {
    margin-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 14px 0;
    text-align: center;
    font-size: 14.5px;
    color: rgba(255,255,255,0.45);
}

/* ── Slick (slider tài liệu ở Index.aspx + Default.aspx): màu nhấn theo thương hiệu ── */
.slick-prev:before, .slick-next:before,
.slick-dots li button:before { color: var(--dntu-primary) !important; }

/* ── Section variants ───────────────────────────────────────── */
.dntu-section-white { background: var(--dntu-white); }
.dntu-section-soft  { background: var(--dntu-bg-soft); }

/* ── Section header (title + view-all link row) ─────────────── */
.dntu-section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 8px;
}
.dntu-viewall {
    font-size: 15.5px;
    font-weight: 600;
    color: var(--dntu-primary);
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.2s;
}
.dntu-viewall:hover { color: var(--dntu-primary-dk); text-decoration: underline; }

/* ── Banner text helpers ─────────────────────────────────────── */
.dntu-banner-title {
    font-family: var(--font-heading);
    font-size: 50px;
    font-weight: 700;
    color: var(--dntu-white);
    text-shadow: 0 2px 12px rgba(0,0,0,0.45);
    margin: 0 0 12px;
    line-height: 1.15;
}
.dntu-banner-sub {
    font-size: 17px;
    color: rgba(255,255,255,0.88);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin: 0 0 32px;
    font-weight: 300;
}
@media (max-width: 767px) {
    .dntu-banner-title { font-size: 31px; }
    .dntu-banner-sub   { font-size: 15.5px; letter-spacing: 1px; }
}

/* ── Banner search wrapper ──────────────────────────────────── */
.dntu-search-wrap { max-width: 720px; margin: 0 auto; }
.dntu-search-inner {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.97);
    border-radius: 50px;
    padding: 5px 5px 5px 22px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.18);
}
.dntu-search-inner input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 17px;
    color: var(--dntu-text);
    font-family: var(--font-body);
    padding: 6px 0;
    min-width: 0;
}
.dntu-search-btn {
    background: var(--dntu-primary);
    color: var(--dntu-white);
    border: none;
    border-radius: 50px;
    padding: 10px 26px;
    font-size: 21.5px;
    cursor: pointer;
    transition: background 0.2s;
    flex-shrink: 0;
}
.dntu-search-btn:hover { background: var(--dntu-primary-dk); }
.dntu-search-advanced-link {
    text-align: center;
    margin-top: 14px;
}
.dntu-search-advanced-link a {
    color: rgba(255,255,255,0.85);
    font-size: 15.5px;
    text-decoration: none;
    transition: color 0.2s;
    border-bottom: 1px solid rgba(255,255,255,0.4);
    padding-bottom: 1px;
}
.dntu-search-advanced-link a:hover { color: var(--dntu-accent); border-bottom-color: var(--dntu-accent); }


/* ── News card inner aliases (nc-*) ─────────────────────────── */
.dntu-news-card .nc-img { width: 100%; height: 160px; overflow: hidden; background: var(--dntu-bg-soft); display: block; }
.dntu-news-card .nc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; display: block; }
.dntu-news-card:hover .nc-img img { transform: scale(1.04); }
.dntu-news-card .nc-body { padding: 14px; }
.dntu-news-card .nc-title { font-size: 16.5px; font-weight: 700; color: var(--dntu-ink); margin: 0 0 6px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.45; }
.dntu-news-card .nc-desc { font-size: 15.5px; color: var(--dntu-text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin: 0 0 8px; }
.dntu-news-card .nc-link { font-size: 15.5px; color: var(--dntu-primary); font-weight: 600; text-decoration: none; }
.dntu-news-card .nc-link:hover { color: var(--dntu-primary-dk); text-decoration: underline; }

/* ── Doc card inner aliases (dc-*) ──────────────────────────── */
.dntu-doc-card .dc-img { width: 100%; aspect-ratio: 3/4; overflow: hidden; display: block; background: rgba(0,0,0,0.15); position: relative; }
.dntu-doc-card .dc-img img:not(.doc-new-badge) { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.35s ease; }
.dntu-doc-card:hover .dc-img img:not(.doc-new-badge) { transform: scale(1.04); }
/* "Mới" badge — góc trên phải, không chiếm diện tích layout */
.dntu-doc-card .dc-img .doc-new-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    width: auto !important;
    height: auto !important;
    max-height: 32px;
    z-index: 2;
    pointer-events: none;
}
.dntu-doc-card .dc-body { padding: 14px; }
.dntu-doc-card .dc-title { font-size: 16.5px; font-weight: 700; color: var(--dntu-white); margin: 0 0 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.4; }
.dntu-doc-card .dc-desc { font-size: 14.5px; color: rgba(255,255,255,0.7); margin: 0 0 10px; }
.dntu-doc-card .dc-link { font-size: 14.5px; color: var(--dntu-accent); text-decoration: none; font-weight: 600; }
.dntu-doc-card .dc-link:hover { color: var(--dntu-white); }

/* ── Announcement aliases (direct, not nested) ───────────────── */
.dntu-announce-title { font-size: 16.5px; font-weight: 600; color: var(--dntu-ink); text-decoration: none; line-height: 1.4; display: block; }
.dntu-announce-title:hover { color: var(--dntu-primary); text-decoration: underline; }
.dntu-announce-meta { font-size: 14.5px; color: var(--dntu-text-muted); margin-bottom: 3px; }

/* ── Quote slider (Index.aspx Section 9) ────────────────────── */
.dntu-quote-section {
    background: var(--dntu-bg-soft);
    padding: 56px 0;
}
.dntu-quote-wrap {
    background: var(--dntu-white);
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    padding: 40px 56px;
    text-align: center;
    max-width: 760px;
    margin: 0 auto;
    position: relative;
}
.dntu-quote-icon {
    font-family: var(--font-heading);
    font-size: 85.5px;
    line-height: 1;
    color: var(--dntu-primary);
    opacity: 0.25;
    position: absolute;
    top: 16px;
    left: 28px;
}
.dntu-quote-text {
    font-family: var(--font-heading);
    font-size: 24px;
    font-style: italic;
    color: var(--dntu-ink);
    line-height: 1.65;
    margin: 0 0 20px;
}
.dntu-quote-author {
    font-size: 18px;
    font-weight: 700;
    color: var(--dntu-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 4px;
}
.dntu-quote-author-sub {
    font-size: 15.5px;
    color: var(--dntu-text-muted);
}
.dntu-quote-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--dntu-white);
    border: 1px solid var(--dntu-border);
    color: var(--dntu-primary);
    font-size: 18px;
    cursor: pointer;
    transition: var(--dntu-transition);
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--dntu-shadow);
}
.dntu-quote-nav:hover { background: var(--dntu-primary); color: var(--dntu-white); border-color: var(--dntu-primary); }
.dntu-quote-nav.prev { left: -56px; }
.dntu-quote-nav.next { right: -56px; }
@media (max-width: 991px) {
    .dntu-quote-wrap { padding: 32px 28px; }
    .dntu-quote-nav.prev { left: 0; }
    .dntu-quote-nav.next { right: 0; }
}

/* ── Contact page ────────────────────────────────────────────── */
.dntu-contact-hero {
    background: linear-gradient(135deg, var(--dntu-dark) 0%, var(--dntu-primary) 100%);
    color: var(--dntu-white);
    padding: 56px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.dntu-contact-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><circle cx="30" cy="30" r="1.5" fill="rgba(255,223,185,0.15)"/></svg>') repeat;
}
.dntu-contact-hero h1 {
    font-family: var(--font-heading);
    font-size: 43px;
    color: var(--dntu-white);
    margin: 0 0 10px;
    position: relative;
}
.dntu-contact-hero p { color: rgba(255,255,255,0.8); font-size: 17px; margin: 0; position: relative; }

.dntu-contact-card {
    background: var(--dntu-white);
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    padding: 28px 24px;
    text-align: center;
    transition: var(--dntu-transition);
    height: 100%;
}
.dntu-contact-card:hover { box-shadow: var(--dntu-shadow-hover); transform: translateY(-3px); }
.dntu-contact-card .cc-icon {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: var(--dntu-bg-soft);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px;
}
.dntu-contact-card .cc-icon i { font-size: 26px; color: var(--dntu-primary); }
.dntu-contact-card h5 { font-size: 18px; font-weight: 700; color: var(--dntu-ink); margin: 0 0 8px; }
.dntu-contact-card p, .dntu-contact-card a { font-size: 16.5px; color: var(--dntu-text-muted); text-decoration: none; line-height: 1.6; }
.dntu-contact-card a:hover { color: var(--dntu-primary); }

.dntu-contact-form { background: var(--dntu-white); border-radius: var(--dntu-radius); box-shadow: var(--dntu-shadow); padding: 36px; }
.dntu-contact-form h3 { font-family: var(--font-heading); font-size: 28.5px; color: var(--dntu-ink); margin: 0 0 24px; }
.dntu-form-group { margin-bottom: 20px; }
.dntu-form-group label { display: block; font-size: 15.5px; font-weight: 600; color: var(--dntu-ink); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px; }
.dntu-form-group .form-control {
    border: 1px solid var(--dntu-border);
    border-radius: var(--dntu-radius-sm);
    padding: 10px 14px;
    font-size: 16.5px;
    color: var(--dntu-text);
    transition: border-color 0.2s, box-shadow 0.2s;
    width: 100%;
    font-family: var(--font-body);
}
.dntu-form-group .form-control:focus { border-color: var(--dntu-primary); box-shadow: 0 0 0 3px rgba(164,25,61,0.1); outline: none; }

/* ── Services page ───────────────────────────────────────────── */
.dntu-services-hero {
    background: linear-gradient(135deg, var(--dntu-dark) 0%, var(--dntu-primary-dk) 100%);
    padding: 48px 0 64px;
    text-align: center;
    color: var(--dntu-white);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
/* Used when hero wraps a .container (Portal master pages) */
.dntu-services-hero > .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}
.dntu-services-hero h1 {
    font-family: var(--font-heading);
    font-size: 40.5px;
    color: var(--dntu-white);
    margin: 0 0 10px;
}
.dntu-services-hero p { color: rgba(255,255,255,0.8); margin: 0; }

/* Hero child elements — icon + title + subtitle */
.dntu-services-hero-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 31px;
    color: var(--dntu-white);
    margin-bottom: 8px;
    flex-shrink: 0;
}
.dntu-services-hero-title {
    font-family: var(--font-heading);
    font-size: 33.5px;
    font-weight: 700;
    color: var(--dntu-white);
    margin: 0 0 6px;
    line-height: 1.25;
}
.dntu-services-hero-sub {
    color: rgba(255,255,255,0.8);
    font-size: 18px;
    margin: 0;
    max-width: 540px;
}

/* Tab badge (count pill inside tab button) */
.dntu-user-tab .tab-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 700;
    background: var(--dntu-border);
    color: var(--dntu-text-muted);
    margin-left: 6px;
    transition: background 0.2s, color 0.2s;
}
.dntu-user-tab.active .tab-badge,
.dntu-user-tab:hover .tab-badge {
    background: var(--dntu-primary);
    color: #fff;
}

/* Info callout strip (used inside panels) */
.dntu-callout {
    background: var(--dntu-bg-soft);
    border-left: 4px solid var(--dntu-primary);
    border-radius: 0 var(--dntu-radius-sm) var(--dntu-radius-sm) 0;
    padding: 14px 18px;
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}
.dntu-callout-text {
    flex: 1;
    min-width: 200px;
    font-size: 16px;
    color: var(--dntu-ink);
    margin: 0;
    line-height: 1.5;
}
.dntu-callout-text i { color: var(--dntu-primary); margin-right: 6px; }
.dntu-callout-actions { display: flex; gap: 8px; flex-shrink: 0; flex-wrap: wrap; }

.dntu-user-tabs { border-bottom: 2px solid var(--dntu-border); display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 32px; }
.dntu-user-tab {
    padding: 12px 20px;
    font-size: 16.5px;
    font-weight: 600;
    color: var(--dntu-text-muted);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
    font-family: var(--font-body);
    margin-bottom: -2px;
}
.dntu-user-tab:hover { color: var(--dntu-primary); }
.dntu-user-tab.active { color: var(--dntu-primary); border-bottom-color: var(--dntu-primary); }

.dntu-service-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--dntu-white);
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    padding: 20px;
    text-decoration: none !important;
    transition: var(--dntu-transition);
    border-left: 4px solid var(--dntu-primary);
    color: inherit;
}
.dntu-service-card:hover { box-shadow: var(--dntu-shadow-hover); transform: translateX(4px); color: inherit; }
.dntu-service-card .svc-icon {
    width: 48px; height: 48px;
    border-radius: var(--dntu-radius-sm);
    background: var(--dntu-bg-soft);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    font-size: 26px;
    color: var(--dntu-primary);
}
.dntu-service-card .svc-body .svc-title { font-size: 18px; font-weight: 700; color: var(--dntu-ink); margin: 0 0 5px; }
.dntu-service-card .svc-body .svc-desc { font-size: 15.5px; color: var(--dntu-text-muted); margin: 0; line-height: 1.5; }
.dntu-service-card .svc-body .svc-link { font-size: 14.5px; color: var(--dntu-primary); font-weight: 600; margin-top: 8px; display: block; }

/* ── Support cards: spacing khi dùng Bootstrap grid ─────────── */
.dntu-support-col { margin-bottom: 20px; }

/* ── News list cards (TrangTinNhomTinTuc) ────────────────────── */
.dntu-news-card {
    display: flex;
    gap: 16px;
    background: var(--dntu-white);
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    padding: 16px;
    margin-bottom: 20px;
    text-decoration: none !important;
    color: var(--dntu-text) !important;
    transition: var(--dntu-transition);
    border-left: 4px solid transparent;
}
.dntu-news-card:hover {
    border-left-color: var(--dntu-primary);
    box-shadow: var(--dntu-shadow-hover);
    transform: translateX(3px);
}
.dntu-news-card-thumb {
    width: 120px;
    flex-shrink: 0;
}
.dntu-news-card-thumb img {
    width: 100%;
    height: 85px;
    object-fit: cover;
    border-radius: var(--dntu-radius-sm);
}
.dntu-news-card-body { flex: 1; min-width: 0; }
.dntu-news-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--dntu-ink);
    margin: 0 0 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.dntu-news-card-title:hover { color: var(--dntu-primary); }
.dntu-news-card-desc {
    font-size: 15.5px;
    color: var(--dntu-text-muted);
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
@media (max-width: 480px) {
    .dntu-news-card { flex-direction: column; }
    .dntu-news-card-thumb { width: 100%; }
    .dntu-news-card-thumb img { height: 160px; }
}

/* ── Article detail (TrangTinTinTucChiTiet) ──────────────────── */
.dntu-article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 15.5px;
    color: var(--dntu-text-muted);
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--dntu-border);
}
.dntu-article-meta i { color: var(--dntu-primary); }
.dntu-article-share {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-top: 20px;
    border-top: 1px solid var(--dntu-border);
    margin-top: 24px;
}
.dntu-article-share a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--dntu-bg-soft);
    color: var(--dntu-primary) !important;
    transition: var(--dntu-transition);
    text-decoration: none !important;
}
.dntu-article-share a:hover {
    background: var(--dntu-primary);
    color: #fff !important;
}
.dntu-article-views {
    font-size: 15.5px;
    color: var(--dntu-text-muted);
    margin-left: auto;
}

/* ── Page breadcrumb ─────────────────────────────────────────── */
.dntu-breadcrumb {
    background: var(--dntu-bg-soft);
    padding: 10px 0;
    border-bottom: 1px solid var(--dntu-border);
}
.dntu-breadcrumb ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 15.5px; }
.dntu-breadcrumb ol li + li::before { content: '/'; color: var(--dntu-text-muted); margin-right: 6px; }
.dntu-breadcrumb a { color: var(--dntu-primary); text-decoration: none; }
.dntu-breadcrumb a:hover { text-decoration: underline; }
.dntu-breadcrumb li:last-child { color: var(--dntu-text-muted); }

/* ── Responsive helpers ─────────────────────────────────────── */
@media (max-width: 991px) {
    .dntu-section { padding: 36px 0; }
    .dntu-banner-content h1 { font-size: 35.5px; }
    .dntu-resource-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 575px) {
    .dntu-section { padding: 24px 0; }
    .dntu-section-title { font-size: 26px; }
    .dntu-search-box { border-radius: 8px; padding: 6px; }
}

/* ── Page content wrapper ───────────────────────────────────── */
#dntu-page-content { min-height: 400px; }

/* ─── Services hero: icon + title side-by-side on desktop ────────────────────────
   Applies only when the hero .container contains a .dntu-services-hero-icon element
   (e.g. TrangTinTaiNguyenChiTiet.aspx). Plain-text hero (TrangTinDichVu.aspx) keeps
   the default column/centred layout.                                               */
.dntu-services-hero > .container:has(.dntu-services-hero-icon) {
    flex-direction: row;
    align-items: center;
    gap: 24px;
    text-align: left;
}
.dntu-services-hero-icon {
    flex-shrink: 0;
    margin-bottom: 0;           /* reset: was 8px from the stacked column layout */
}
@media (max-width: 767px) {
    .dntu-services-hero > .container:has(.dntu-services-hero-icon) {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    .dntu-services-hero-icon { margin-bottom: 4px; }
}

/* ─── Service tab panel (TrangTinTaiNguyenChiTiet, TrangTinDichVu) ───────────────
   The class is toggled show/hide via inline style by JS, so animation fires fresh
   each time a tab is selected (display:none resets the CSS animation).             */
@keyframes dntu-panel-fadein {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
.dntu-svc-panel {
    display: block;
    animation: dntu-panel-fadein 0.22s ease both;
}

/* Action bar inside a panel: description text + button side by side */
.dntu-svc-panel-bar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 28px;
}
.dntu-svc-panel-bar > p {
    font-size: 16px;
    color: var(--dntu-text-muted);
    line-height: 1.6;
    flex: 1;
    max-width: 560px;
    margin: 0;
}
.dntu-svc-panel-bar > .btn-dntu { flex-shrink: 0; }
@media (max-width: 575px) {
    .dntu-svc-panel-bar { flex-direction: column; }
}

/* Standalone intro paragraph at the top of a panel */
.dntu-svc-panel-intro {
    font-size: 16px;
    color: var(--dntu-text-muted);
    line-height: 1.6;
    margin-bottom: 28px;
}

/* Extra breathing room above the callout strip at panel bottom */
.dntu-svc-panel > .dntu-callout { margin-top: 28px; }

/* ══ Override: ucPortalLeft* blockSidebar (styles.css dùng #0F6670 teal) ══ */
.blockSidebar {
    margin: 0 0 16px;
    border-radius: var(--dntu-radius-sm);
    overflow: hidden;
    box-shadow: var(--dntu-shadow);
}
.blockSidebar .titleBlock,
.blockSidebar h2.titleBlock {
    background: var(--dntu-primary) !important;
    background-color: var(--dntu-primary) !important;
    color: #fff !important;
    font-size: 15.5px !important;
    font-weight: 700 !important;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 14px !important;
    margin: 0 !important;
    border: none !important;
    border-radius: 0 !important;
}
/* Ẩn icon pseudo-element FA4 (content:"\f...") từ style-old.css */
.blockSidebar .titleBlock::before { display: none !important; }
.blockSidebar .bodyBlock {
    background: var(--dntu-white);
    padding: 6px 0;
    border: 1px solid var(--dntu-border);
    border-top: none;
}
.blockSidebar .bodyBlock a {
    color: var(--dntu-text) !important;
    font-size: 16px;
    display: block;
    padding: 6px 14px;
    text-decoration: none !important;
    transition: background 0.15s, color 0.15s;
}
.blockSidebar .bodyBlock a:hover {
    color: var(--dntu-primary) !important;
    background: var(--dntu-bg-soft);
    padding-left: 20px;
}
/* Select "Liên kết website" */
.blockSidebar select,
.blockSidebar #ddlWebsiteLink {
    width: 100% !important;
    font-size: 15.5px;
    padding: 6px 10px;
    border: 1px solid var(--dntu-border);
    border-radius: var(--dntu-radius-sm);
    color: var(--dntu-text);
}

/* ══ Override: Bootstrap panel headings bất kỳ → DNTU red ════════════════ */
.panel { border-color: var(--dntu-border) !important; border-radius: var(--dntu-radius-sm) !important; }
.panel-default > .panel-heading,
.panel-primary > .panel-heading,
.panel-info    > .panel-heading,
.panel-success > .panel-heading,
.panel-warning > .panel-heading,
.panel-danger  > .panel-heading {
    background: var(--dntu-primary) !important;
    background-image: none !important;
    border-color: var(--dntu-primary) !important;
    color: #fff !important;
}
.panel-heading .panel-title,
.panel-heading a,
.panel-heading .panel-title a { color: #fff !important; }

/* ══ Override: styles.css các class teal .statistics/.new-documents dùng #0F6670 ═ */
/* Không override toàn bộ vì có thể vẫn cần — chỉ reset nếu nằm trong page DNTU */
#dntu-page-content .statistics,
#dntu-page-content .new-documents { background-color: var(--dntu-primary) !important; }
#dntu-page-content .content h4 {
    background-color: var(--dntu-primary) !important;
    color: var(--dntu-accent) !important;
    border-radius: var(--dntu-radius-sm) !important;
}
#dntu-page-content .title-news-detail {
    background-color: var(--dntu-primary) !important;
    color: var(--dntu-white) !important;
}

/* ══ Detail pages: 2-column layout (sidebar + content) ═══════════════════ */
.dntu-detail-layout {
    padding: 32px 0 48px;
}
.dntu-detail-row {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

/* Sidebar */
.dntu-detail-sidebar {
    width: 260px;
    flex-shrink: 0;
    background: #fff;
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    overflow: hidden;
}
.dntu-sidebar-header {
    background: var(--dntu-primary);
    color: #fff;
    font-size: 15.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.dntu-sidebar-nav {
    list-style: none;
    margin: 0;
    padding: 8px 0;
}
.dntu-sidebar-nav li { margin: 0; }
.dntu-sidebar-nav li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 16px;
    font-size: 16px;
    color: var(--dntu-text) !important;
    text-decoration: none !important;
    border-left: 3px solid transparent;
    transition: var(--dntu-transition);
    line-height: 1.4;
}
.dntu-sidebar-nav li a:hover,
.dntu-sidebar-nav li a.active {
    background: var(--dntu-bg-soft);
    border-left-color: var(--dntu-primary);
    color: var(--dntu-primary) !important;
}
.dntu-sidebar-nav li a i {
    color: var(--dntu-primary);
    font-size: 14.5px;
    flex-shrink: 0;
}

/* Main content */
.dntu-detail-content {
    flex: 1;
    min-width: 0;
    background: #fff;
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    padding: 28px 32px;
}
.dntu-detail-title {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 700;
    color: var(--dntu-primary);
    margin: 0 0 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--dntu-accent);
    line-height: 1.35;
}
/* Prose: user-generated HTML from DB */
.dntu-detail-body {
    font-size: 18px;
    line-height: 1.75;
    color: var(--dntu-text);
}
.dntu-detail-body h2,
.dntu-detail-body h3,
.dntu-detail-body h4 {
    font-family: var(--font-heading);
    color: var(--dntu-ink);
    margin: 20px 0 8px;
    text-align: left;
}
.dntu-detail-body h2 { font-size: 24px; }
.dntu-detail-body h3 { font-size: 20px; }
.dntu-detail-body p  { margin: 0 0 12px; text-align: justify; }
.dntu-detail-body ul,
.dntu-detail-body ol { padding-left: 20px; margin: 0 0 12px; }
.dntu-detail-body li { margin-bottom: 4px; text-align: justify; }
.dntu-detail-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
    font-size: 16.5px;
}
.dntu-detail-body table th,
.dntu-detail-body table td {
    border: 1px solid var(--dntu-border);
    padding: 8px 12px;
    vertical-align: top;
}
.dntu-detail-body table th {
    background: var(--dntu-bg-soft);
    font-weight: 700;
    color: var(--dntu-primary);
}
.dntu-detail-body img { max-width: 100%; height: auto; border-radius: var(--dntu-radius-sm); }
.dntu-detail-body a { color: var(--dntu-primary); }

/* PDF viewer area */
.dntu-detail-body .viewPdf { margin-top: 16px; }

/* Responsive: stack on small screens */
@media (max-width: 767px) {
    .dntu-detail-row { flex-direction: column; }
    .dntu-detail-sidebar { width: 100%; }
    .dntu-detail-content { padding: 20px 16px; }
    .dntu-detail-title { font-size: 21.5px; }
}

/* ─── News group cards (ucPortalLeftNewsGroup) ───────────────────────── */
.dntu-news-group-card {
    background: #fff;
    border: 1px solid var(--dntu-border);
    border-radius: var(--dntu-radius);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.dntu-news-group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 10px 14px;
    background: var(--dntu-bg-soft);
    border-bottom: 2px solid var(--dntu-primary);
}
.dntu-news-group-header h5 {
    margin: 0;
    font-size: 16.5px;
    font-weight: 700;
    color: var(--dntu-primary);
    font-family: var(--font-heading);
    line-height: 1.35;
}
.dntu-news-group-items { flex: 1; padding: 4px 0; }
.dntu-news-item-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 14px;
    border-bottom: 1px solid var(--dntu-border);
    text-decoration: none;
    transition: background-color .15s;
    color: var(--dntu-text);
}
.dntu-news-item-row:last-child { border-bottom: 0; }
.dntu-news-item-row:hover { background: var(--dntu-bg-soft); color: var(--dntu-text); text-decoration: none; }
.dntu-news-thumb-sm {
    width: 76px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--dntu-radius-sm);
    flex-shrink: 0;
    background: var(--dntu-border);
}
.dntu-news-item-title {
    font-size: 15.5px;
    line-height: 1.5;
    color: var(--dntu-text);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.dntu-news-item-row:hover .dntu-news-item-title { color: var(--dntu-primary); }

/* ─── Related news list ──────────────────────────────────────────────── */
.dntu-related-block { margin-top: 36px; }
.dntu-related-list  { list-style: none; padding: 0; margin: 0; }
.dntu-related-item  {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 1px solid var(--dntu-border);
    font-size: 16px;
}
.dntu-related-item:last-child { border-bottom: 0; }
.dntu-related-link {
    flex: 1;
    color: var(--dntu-text);
    text-decoration: none;
    line-height: 1.5;
    transition: color .15s;
}
.dntu-related-link i { color: var(--dntu-primary); font-size: 13px; margin-right: 5px; }
.dntu-related-link:hover { color: var(--dntu-primary); text-decoration: none; }
.dntu-related-date {
    color: var(--dntu-text-muted);
    font-size: 14.5px;
    white-space: nowrap;
    flex-shrink: 0;
}

/* ─── Attachment block (tblTepDinhKem redesign) ──────────────────────── */
table.dntu-attach-block {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    font-size: 16px;
    background: var(--dntu-bg-soft);
    border: 1px solid var(--dntu-border);
    border-left: 3px solid var(--dntu-primary);
}
table.dntu-attach-block td,
table.dntu-attach-block th {
    padding: 9px 14px;
    vertical-align: middle;
    border-bottom: 1px solid var(--dntu-border);
    line-height: 1.5;
    font-weight: normal;
}
table.dntu-attach-block tr:last-child td,
table.dntu-attach-block tr:last-child th { border-bottom: 0; }
.dntu-attach-label {
    font-size: 15.5px;
    font-weight: 700;
    color: var(--dntu-ink);
    white-space: nowrap;
    width: 1%;
}
.dntu-attach-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--dntu-radius-sm);
    color: var(--dntu-primary);
    background: #fff;
    border: 1px solid var(--dntu-border);
    cursor: pointer;
    transition: background-color .15s, color .15s, border-color .15s;
    text-decoration: none;
    vertical-align: middle;
    margin-left: 6px;
    font-size: 15.5px;
    line-height: 1;
}
.dntu-attach-btn:hover {
    background: var(--dntu-primary);
    color: #fff;
    border-color: var(--dntu-primary);
    text-decoration: none;
}

/* ─── PDF / file viewer ──────────────────────────────────────────────── */
.dntu-pdf-viewer {
    border-radius: var(--dntu-radius-sm);
    border: 1px solid var(--dntu-border);
    overflow: hidden;
    background: #f5f5f5;
}
.dntu-pdf-viewer iframe {
    display: block;
    width: 100%;
    height: 680px;
    border: 0;
}
@media (max-width: 767px) {
    .dntu-pdf-viewer iframe { height: 400px; }
}

/* ─── Edata search result cards ─────────────────────────────────────────── */

/* Toolbar */
.dntu-toolbar {
    display: flex; align-items: center;
    gap: 10px; padding: 10px 0 14px; flex-wrap: wrap;
}
.dntu-toolbar label { font-size: 15.5px; color: var(--dntu-text-muted); margin: 0; white-space: nowrap; }
.dntu-toolbar .form-select { font-size: 15.5px; border-color: var(--dntu-border); border-radius: var(--dntu-radius-sm); }

/* View toggle pill */
.dntu-view-toggle {
    display: inline-flex; gap: 2px; margin-left: auto;
    background: var(--dntu-bg-soft);
    border: 1px solid var(--dntu-border);
    border-radius: var(--dntu-radius-sm);
    padding: 2px;
}
.dntu-view-btn {
    width: 34px; height: 30px; border: none;
    border-radius: calc(var(--dntu-radius-sm) - 2px);
    background: transparent; color: var(--dntu-text-muted);
    display: inline-flex; align-items: center; justify-content: center;
    cursor: pointer; transition: background .15s, color .15s, box-shadow .15s;
    text-decoration: none; font-size: 16.5px; line-height: 1;
}
.dntu-view-btn.active {
    background: #fff; color: var(--dntu-primary);
    box-shadow: 0 1px 4px rgba(0,0,0,.12);
}
.dntu-view-btn:hover:not(.active) { color: var(--dntu-primary); background: rgba(164,25,61,.06); }

/* ── Grid view ─────────────────────────────────── */
.dntu-edata-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 20px;
}
.dntu-edata-card {
    background: #fff; border-radius: var(--dntu-radius);
    box-shadow: 0 2px 8px rgba(0,0,0,.07);
    border: 1px solid var(--dntu-border);
    overflow: hidden; transition: box-shadow .22s, transform .22s, border-color .22s;
    display: flex; flex-direction: column; height: 100%;
}
.dntu-edata-card:hover {
    box-shadow: 0 8px 28px rgba(164,25,61,.16);
    transform: translateY(-3px);
    border-color: rgba(164,25,61,.25);
}
/* Cover wrapper + overlay */
.dntu-edata-cover-wrap {
    position: relative; overflow: hidden;
    aspect-ratio: 3 / 4;
    background: var(--dntu-bg-soft);
    flex-shrink: 0;
}
.dntu-edata-card .dntu-edata-cover {
    width: 100%; height: 100%; object-fit: cover;
    display: block; transition: transform .3s ease;
}
.dntu-edata-card:hover .dntu-edata-cover { transform: scale(1.05); }
.dntu-edata-overlay {
    position: absolute; inset: 0;
    background: rgba(32,10,16,.62);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity .22s ease;
}
.dntu-edata-card:hover .dntu-edata-overlay { opacity: 1; }
.dntu-edata-overlay-btn {
    color: #fff; font-size: 15px; font-weight: 600;
    border: 2px solid rgba(255,255,255,.65);
    border-radius: 20px; padding: 6px 16px;
    text-decoration: none; white-space: nowrap;
    transition: background .15s, border-color .15s;
}
.dntu-edata-overlay-btn:hover {
    background: rgba(255,255,255,.18); border-color: #fff; color: #fff;
}
/* Card body */
.dntu-edata-card .dntu-edata-info {
    padding: 12px 13px 10px;
    flex: 1; display: flex; flex-direction: column; gap: 2px;
}
.dntu-edata-card-footer {
    margin-top: auto; padding-top: 9px;
    border-top: 1px solid var(--dntu-border);
    font-size: 14.5px; line-height: 1.4;
}

/* ── List view ─────────────────────────────────── */
.dntu-edata-list { display: flex; flex-direction: column; }
.dntu-edata-row {
    display: flex; gap: 16px; align-items: flex-start;
    padding: 16px 12px; border-bottom: 1px solid var(--dntu-border);
    border-radius: var(--dntu-radius-sm);
    transition: background .15s;
    margin: 0 -12px;
}
.dntu-edata-row:last-child { border-bottom: none; }
.dntu-edata-row:hover { background: var(--dntu-bg-soft); }

/* Cover */
.dntu-edata-cover-link { flex-shrink: 0; display: block; }
.dntu-edata-row .dntu-edata-cover {
    width: 90px; height: 126px;
    object-fit: cover; border-radius: var(--dntu-radius-sm);
    box-shadow: 0 2px 8px rgba(0,0,0,.14);
    display: block; background: var(--dntu-bg-soft);
    transition: box-shadow .2s;
}
.dntu-edata-row:hover .dntu-edata-cover { box-shadow: 0 4px 14px rgba(0,0,0,.2); }

/* Row content */
.dntu-edata-row .dntu-edata-info {
    flex: 1; min-width: 0; padding: 0;
    display: flex; flex-direction: column;
}
.dntu-edata-row-footer {
    display: flex; align-items: center; flex-wrap: wrap;
    gap: 6px; margin-top: 10px;
}

/* Shared title + meta */
.dntu-edata-title {
    font-weight: 600; color: var(--dntu-ink); text-decoration: none;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden; margin-bottom: 6px; font-size: 16px; line-height: 1.45;
}
.dntu-edata-title:hover { color: var(--dntu-primary); }
.dntu-edata-row .dntu-edata-title { font-size: 17.5px; margin-bottom: 8px; }
.dntu-edata-meta {
    font-size: 15px; color: var(--dntu-text-muted); margin: 3px 0; line-height: 1.4;
    display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical;
    overflow: hidden;
}
.dntu-edata-meta i { width: 15px; color: var(--dntu-primary); margin-right: 3px; flex-shrink: 0; }

/* Badges */
.dntu-edata-badge {
    display: inline-flex; align-items: center; gap: 3px;
    font-size: 13.5px; padding: 2px 9px;
    border-radius: 20px; font-weight: 500; white-space: nowrap;
    background: var(--dntu-bg-soft); color: var(--dntu-text-muted);
    border: 1px solid var(--dntu-border);
}
.dntu-edata-badge.badge-info {
    color: var(--dntu-primary);
    border-color: rgba(164,25,61,.25);
    background: rgba(164,25,61,.06);
}

/* Detail link button */
.dntu-edata-detail-btn {
    margin-left: auto; display: inline-flex; align-items: center; gap: 5px;
    font-size: 15px; font-weight: 600; padding: 5px 14px;
    border-radius: 20px; border: 1.5px solid var(--dntu-primary);
    color: var(--dntu-primary); text-decoration: none;
    transition: background .15s, color .15s;
    white-space: nowrap;
}
.dntu-edata-detail-btn:hover { background: var(--dntu-primary); color: #fff; }

/* Responsive */
@media (max-width: 767px) {
    .dntu-edata-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .dntu-edata-row { gap: 12px; padding: 14px 8px; margin: 0 -8px; }
    .dntu-edata-row .dntu-edata-cover { width: 72px; height: 102px; }
    .dntu-edata-detail-btn { font-size: 13.5px; padding: 4px 10px; }
}
@media (max-width: 480px) {
    .dntu-edata-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
}

/* ─── Book detail page ──────────────────────────────────────────────────── */
.dntu-book-hero {
    display: flex; gap: 20px; padding: 24px;
    background: #fff; border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow); margin-bottom: 20px;
    align-items: flex-start;
}
.dntu-book-cover {
    width: 120px; height: 160px; object-fit: cover;
    border-radius: 6px; flex-shrink: 0;
    box-shadow: 0 2px 12px rgba(0,0,0,.12);
}
.dntu-book-meta { flex: 1; }
.dntu-book-title {
    font-size: 24px; font-weight: 700; color: var(--dntu-ink);
    margin-bottom: 8px; line-height: 1.35;
}
.dntu-book-authors { font-size: 16.5px; color: var(--dntu-text-muted); margin-bottom: 10px; }
.dntu-book-badge {
    display: inline-flex; align-items: center; gap: 5px;
    font-size: 14.5px; background: var(--dntu-bg-soft);
    color: var(--dntu-primary); border-radius: 20px;
    padding: 3px 10px; margin-right: 6px; margin-bottom: 6px;
}
@media (max-width: 575px) {
    .dntu-book-hero { flex-direction: column; align-items: center; text-align: center; }
    .dntu-book-cover { width: 100px; height: 135px; }
}
/* Tab bar */
.dntu-tab-bar {
    display: flex; gap: 0; border-bottom: 2px solid var(--dntu-border);
    margin-bottom: 18px; flex-wrap: wrap;
    background: #fff; border-radius: var(--dntu-radius) var(--dntu-radius) 0 0;
}
.dntu-tab {
    background: none; border: none; border-bottom: 2px solid transparent;
    padding: 10px 18px; font-size: 15.5px; color: var(--dntu-text-muted);
    cursor: pointer; margin-bottom: -2px; transition: color .15s, border-color .15s;
    text-decoration: none; display: inline-block;
}
.dntu-tab.active, .dntu-tab:hover {
    color: var(--dntu-primary); border-bottom-color: var(--dntu-primary);
    text-decoration: none;
}
.dntu-section-label { font-weight: 600; color: var(--dntu-primary); font-size: 16.5px; }
.dntu-alert-login {
    background: #fff3cd; border: 1px solid #ffc107; border-radius: var(--dntu-radius-sm);
    color: #856404; padding: 10px 14px; font-size: 16.5px; margin: 10px 0;
}
.dntu-holding-box {
    background: var(--dntu-bg-soft); border-radius: var(--dntu-radius);
    padding: 16px 18px; margin: 14px 0;
}
.dntu-holding-row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 5px 0; font-size: 16px; border-bottom: 1px solid var(--dntu-border);
}
.dntu-holding-row:last-child { border-bottom: none; }
.dntu-holding-label { color: var(--dntu-text-muted); }
.dntu-holding-val { font-weight: 600; color: var(--dntu-ink); }

/* ─── Login widget (ucDangnhap, ucMenuLoginRight) ───────────────────────── */
.dntu-login-widget {
    background: #fff; border-radius: var(--dntu-radius);
    border: 1px solid var(--dntu-border); overflow: hidden;
    margin-bottom: 16px;
}
.dntu-login-title {
    background: var(--dntu-primary); color: #fff;
    padding: 10px 14px; font-weight: 600; font-size: 16.5px;
}
.dntu-login-body { padding: 14px; }
.dntu-login-body .form-control { font-size: 15.5px; border-color: var(--dntu-border); margin-bottom: 8px; }
.dntu-login-body .btn-dntu-primary {
    background: var(--dntu-primary); color: #fff; width: 100%;
    border: none; padding: 8px; border-radius: var(--dntu-radius-sm);
    font-size: 15.5px; font-weight: 600; cursor: pointer;
}
.dntu-login-body .btn-dntu-primary:hover { background: var(--dntu-primary-dk); }
.dntu-login-user {
    padding: 14px;
}
.dntu-login-user-name {
    font-weight: 600; color: var(--dntu-ink); margin-bottom: 10px;
    font-size: 16px;
}
.dntu-login-user ul { list-style: none; padding: 0; margin: 0 0 12px; }
.dntu-login-user ul li {
    border-bottom: 1px solid var(--dntu-border); padding: 6px 0;
    font-size: 15.5px;
}
.dntu-login-user ul li a { color: var(--dntu-ink); text-decoration: none; }
.dntu-login-user ul li a:hover { color: var(--dntu-primary); }

/* ─── Sidebar card (ucPortalCenterRightGuideline) ───────────────────────── */
.dntu-sidebar-card {
    background: #fff; border-radius: var(--dntu-radius);
    border: 1px solid var(--dntu-border); overflow: hidden;
    margin-bottom: 16px;
}
.dntu-sidebar-card-title {
    background: var(--dntu-primary); color: #fff;
    padding: 10px 14px; font-weight: 600; font-size: 16.5px;
}
.dntu-sidebar-card-body { padding: 14px; font-size: 16px; line-height: 1.7; }


/* ─── Tailwind text-align utilities (tw- prefix, fallback khi CDN không scan) ── */
.tw-text-left    { text-align: left    !important; }
.tw-text-center  { text-align: center  !important; }
.tw-text-right   { text-align: right   !important; }
.tw-text-justify { text-align: justify !important; }

/* ─── Left-align overrides (chống text-align:center từ old styles.css) ──────── */
/* Service cards: title, desc, link đều phải trái */
.dntu-service-card,
.dntu-service-card .svc-body { text-align: left; }
/* Panel bar description + panel intro text */
.dntu-svc-panel-bar > p,
.dntu-svc-panel-intro        { text-align: left; }

/* ==========================================
   Global resets: browser defaults + reboot
   ========================================== */

/* th: browser default is text-align:center — normalize to left */
th { text-align: left; }

/* table cells inside sidebar widgets: no ghost borders from old themes */
.dntu-sidebar-card-body table td,
.dntu-sidebar-card-body table th { border: none; }


/* ============================================================
   MOTION & POLISH LAYER  (2026 redesign)
   Additive lớp hiệu ứng — tham khảo lib.vlu / lib.tdtu / elib.ntt.
   Tất cả namespaced .dntu-* nên không đụng style hiện có.
   ============================================================ */

/* ── Scroll-reveal ──────────────────────────────────────────────
   Element gắn class .dntu-reveal → ẩn nhẹ + dịch xuống; JS
   (IntersectionObserver trong Master) thêm .dntu-in khi vào viewport.
   Stagger qua biến --dntu-reveal-d (JS set theo thứ tự con).        */
.dntu-reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .7s cubic-bezier(.2,.7,.2,1),
                transform .7s cubic-bezier(.2,.7,.2,1);
    transition-delay: var(--dntu-reveal-d, 0ms);
    will-change: opacity, transform;
}
.dntu-reveal.dntu-in { opacity: 1; transform: none; }

/* Biến thể hướng dịch chuyển */
.dntu-reveal.from-left  { transform: translateX(-28px); }
.dntu-reveal.from-right { transform: translateX(28px); }
.dntu-reveal.from-left.dntu-in,
.dntu-reveal.from-right.dntu-in { transform: none; }
.dntu-reveal.zoom-in { transform: scale(.94); }
.dntu-reveal.zoom-in.dntu-in { transform: none; }

/* ── CTA gradient pill ──────────────────────────────────────────
   Nút "Khám phá ngay" / "Xem tất cả" ở trang chủ. Dùng kèm .btn-dntu.
   Không sửa .btn-dntu-primary global → các trang khác giữ nguyên.    */
.btn-dntu-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--dntu-primary-dk), var(--dntu-primary) 55%, var(--dntu-primary-lt));
    background-size: 180% 100%;
    background-position: 0% 50%;
    color: #fff;
    border: none;
    border-radius: 999px;
    padding: 11px 28px;
    font-weight: 600;
    box-shadow: 0 6px 18px -6px rgba(164,25,61,.55);
    transition: background-position .4s ease, transform .2s ease, box-shadow .25s ease;
}
.btn-dntu-cta:hover {
    color: #fff;
    background-position: 100% 50%;
    transform: translateY(-2px);
    box-shadow: 0 12px 26px -8px rgba(164,25,61,.6);
}
.btn-dntu-cta:active { transform: translateY(0); }
.btn-dntu-cta i { transition: transform .2s ease; }
.btn-dntu-cta:hover i.fa-arrow-right { transform: translateX(4px); }

/* Light variant — đặt trên nền tối (section primary/dark) */
.btn-dntu-cta.light {
    background: linear-gradient(135deg, var(--dntu-accent), #fff 130%);
    color: var(--dntu-ink);
    box-shadow: 0 6px 18px -6px rgba(0,0,0,.4);
}
.btn-dntu-cta.light:hover { color: var(--dntu-ink); }

/* ── Lift utility ───────────────────────────────────────────────
   Thêm chiều sâu hover cho bất kỳ card nào chưa có sẵn.            */
.dntu-lift { transition: transform .28s ease, box-shadow .28s ease; }
.dntu-lift:hover {
    transform: translateY(-6px);
    box-shadow: var(--dntu-shadow-hover);
}

/* ── Scroll cue (mũi tên gợi ý cuộn ở banner) ───────────────────── */
@keyframes dntu-float {
    0%, 100% { transform: translate(-50%, 0); }
    50%      { transform: translate(-50%, -10px); }
}
.dntu-scroll-cue {
    position: absolute;
    left: 50%;
    bottom: 22px;
    color: rgba(255,255,255,.8);
    font-size: 28.5px;
    animation: dntu-float 2.4s ease-in-out infinite;
    text-decoration: none;
    z-index: 3;
}
.dntu-scroll-cue:hover { color: #fff; }

/* ── Section heading reveal-friendly underline grow ─────────────── */
.dntu-reveal .dntu-divider,
.dntu-reveal.dntu-divider { transition: width .6s ease .25s; }

/* ── Reduced-motion: tôn trọng người dùng tắt animation ─────────── */
@media (prefers-reduced-motion: reduce) {
    .dntu-reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
    .dntu-scroll-cue { animation: none; }
    .btn-dntu-cta { transition: none; }
}


/* ============================================================
   PREMIUM OPAC SEARCH  (faceted results, 2026)
   Sidebar facet + chips + empty/loading + mobile drawer.
   Dùng cho TraCuuTaiLieuSo2KetQuaTimKiem & các trang kết quả.
   ============================================================ */

/* Layout 2 cột: facet sidebar + kết quả */
.dntu-search-layout {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}
.dntu-results-col { min-width: 0; }

/* ── Facet panel ─────────────────────────────────────────────── */
.dntu-facets {
    background: #fff;
    border: 1px solid var(--dntu-border);
    border-radius: var(--dntu-radius);
    box-shadow: var(--dntu-shadow);
    overflow: hidden;
    position: sticky;
    top: 16px;
}
.dntu-facets-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--dntu-border);
}
.dntu-facets-head .ttl { font-family: var(--font-heading); font-weight: 700; font-size: 18px; color: var(--dntu-ink); }
.dntu-facets-head .ttl i { color: var(--dntu-primary); margin-right: 6px; }
.dntu-facets-reset { font-size: 14.5px; font-weight: 600; color: var(--dntu-primary); background: none; border: none; cursor: pointer; }
.dntu-facets-reset:hover { text-decoration: underline; }

.dntu-facet { border-bottom: 1px solid var(--dntu-border); }
.dntu-facet:last-child { border-bottom: none; }
.dntu-facet > summary {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 16px; cursor: pointer; list-style: none;
    font-size: 16px; font-weight: 700; color: var(--dntu-ink);
    transition: background .15s;
}
.dntu-facet > summary::-webkit-details-marker { display: none; }
.dntu-facet > summary:hover { background: var(--dntu-bg-soft); }
.dntu-facet > summary .fa-angle-down { font-size: 14.5px; color: var(--dntu-text-muted); transition: transform .2s ease; }
.dntu-facet[open] > summary .fa-angle-down { transform: rotate(180deg); }
.dntu-facet-body { padding: 2px 16px 14px; }

.dntu-facet-opt {
    display: flex; align-items: center; justify-content: space-between;
    gap: 8px; padding: 4px 0; font-size: 15.5px; color: var(--dntu-text); cursor: pointer;
}
.dntu-facet-opt:hover { color: var(--dntu-primary); }
.dntu-facet-opt > span { display: inline-flex; align-items: center; gap: 7px; min-width: 0; }
.dntu-facet-opt > span > span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dntu-facet-opt input[type="checkbox"] { accent-color: var(--dntu-primary); width: 15px; height: 15px; flex-shrink: 0; }
.dntu-facet-opt i { color: rgba(164,25,61,.7); }
.dntu-facet-opt b { font-size: 13px; font-weight: 600; color: var(--dntu-text-muted); flex-shrink: 0; }
.dntu-facet-more { margin-top: 6px; font-size: 14.5px; font-weight: 600; color: var(--dntu-primary); background: none; border: none; cursor: pointer; padding: 0; }
.dntu-facet-more:hover { text-decoration: underline; }

/* Histogram + range cho năm xuất bản */
.dntu-facet-hist { display: flex; align-items: flex-end; gap: 2px; height: 48px; margin-bottom: 8px; }
.dntu-facet-hist span { flex: 1; background: rgba(164,25,61,.35); border-radius: 3px 3px 0 0; transition: background .15s; }
.dntu-facet-range { width: 100%; accent-color: var(--dntu-primary); }
.dntu-facet-range-lbl { display: flex; justify-content: space-between; font-size: 13.5px; color: var(--dntu-text-muted); margin-top: 4px; }
.dntu-facet-range-lbl b { color: var(--dntu-primary); }

/* ── Active filter chips ─────────────────────────────────────── */
.dntu-chips { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 16px; }
.dntu-chips-label { font-size: 15.5px; font-weight: 600; color: var(--dntu-ink); }
.dntu-chip {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--dntu-primary); color: #fff;
    border-radius: 999px; padding: 4px 12px; font-size: 14.5px; font-weight: 500;
}
.dntu-chip button { background: none; border: none; color: #fff; cursor: pointer; padding: 0; line-height: 1; opacity: .8; }
.dntu-chip button:hover { opacity: 1; color: var(--dntu-accent); }
.dntu-chips-clear { font-size: 14.5px; font-weight: 600; color: var(--dntu-primary); background: none; border: none; cursor: pointer; }
.dntu-chips-clear:hover { text-decoration: underline; }

/* ── Empty state ─────────────────────────────────────────────── */
.dntu-empty {
    text-align: center; padding: 56px 24px;
    background: #fff; border: 1px solid var(--dntu-border);
    border-radius: var(--dntu-radius); box-shadow: var(--dntu-shadow);
}
.dntu-empty-icon {
    width: 84px; height: 84px; border-radius: 50%;
    background: var(--dntu-bg-soft); color: var(--dntu-primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 40.5px; margin: 0 auto 20px;
}
.dntu-empty h3 { font-family: var(--font-heading); font-size: 24px; color: var(--dntu-ink); margin: 0 0 8px; }
.dntu-empty p { font-size: 16.5px; color: var(--dntu-text-muted); margin: 0 auto 20px; max-width: 440px; line-height: 1.6; }
.dntu-empty-tips { display: inline-flex; flex-direction: column; gap: 6px; text-align: left; font-size: 15.5px; color: var(--dntu-text-muted); }
.dntu-empty-tips li { list-style: none; }
.dntu-empty-tips i { color: var(--dntu-primary); margin-right: 8px; }

/* ── Loading skeleton ────────────────────────────────────────── */
@keyframes dntu-shimmer { 0% { background-position: -600px 0; } 100% { background-position: 600px 0; } }
.dntu-skel {
    background: linear-gradient(90deg, #eee 25%, #f6f6f6 37%, #eee 63%);
    background-size: 1200px 100%;
    animation: dntu-shimmer 1.3s ease-in-out infinite;
    border-radius: var(--dntu-radius-sm);
}
.dntu-skel-row {
    display: flex; gap: 16px; background: #fff; border: 1px solid var(--dntu-border);
    border-radius: var(--dntu-radius); padding: 14px; margin-bottom: 12px;
}
.dntu-skel-cover { width: 90px; height: 126px; flex-shrink: 0; }
.dntu-skel-lines { flex: 1; display: flex; flex-direction: column; gap: 10px; padding-top: 4px; }
.dntu-skel-line { height: 13px; }
.dntu-skel-line.w-80 { width: 80%; } .dntu-skel-line.w-60 { width: 60%; }
.dntu-skel-line.w-40 { width: 40%; } .dntu-skel-line.w-90 { width: 90%; }

/* ── Mobile facet drawer ─────────────────────────────────────── */
.dntu-facet-fab {
    display: none;
    align-items: center; gap: 8px;
    background: var(--dntu-primary); color: #fff;
    border: none; border-radius: 999px;
    padding: 10px 20px; font-size: 16.5px; font-weight: 600;
    box-shadow: 0 6px 20px -4px rgba(164,25,61,.5);
    cursor: pointer;
}
.dntu-facet-backdrop {
    display: none; position: fixed; inset: 0;
    background: rgba(46,20,27,.5); z-index: 1090;
    opacity: 0; transition: opacity .25s ease;
}
.dntu-facet-backdrop.open { display: block; opacity: 1; }

@media (max-width: 991px) {
    .dntu-search-layout { grid-template-columns: 1fr; }
    .dntu-facet-fab { display: inline-flex; }

    /* Sidebar trở thành drawer trượt từ trái */
    .dntu-facets {
        position: fixed; top: 0; left: 0; bottom: 0;
        width: 86%; max-width: 340px; z-index: 1100;
        border-radius: 0; box-shadow: 0 0 40px rgba(0,0,0,.3);
        transform: translateX(-100%); transition: transform .3s cubic-bezier(.4,0,.2,1);
        overflow-y: auto;
    }
    .dntu-facets.open { transform: translateX(0); }
    .dntu-facets-mobile-close { display: inline-flex !important; }
}
.dntu-facets-mobile-close {
    display: none; background: none; border: none;
    color: var(--dntu-text-muted); font-size: 21.5px; cursor: pointer; padding: 0 4px;
}
.dntu-facets-mobile-close:hover { color: var(--dntu-primary); }


/* ============================================================
   INDEX HOMEPAGE POLISH  (portal trang chủ) — 2026
   Hero fluid + vi tương tác + responsive. Chỉ tác động trang chủ.
   ============================================================ */

/* ── Hero: cỡ chữ co giãn theo viewport (clamp) ─────────────── */
.dntu-banner { min-height: clamp(360px, 56vh, 520px); }
.dntu-banner-content { padding: clamp(56px, 9vw, 92px) 16px; }
.dntu-banner-title { font-size: clamp(28px, 5vw, 46px); }
.dntu-banner-sub   { font-size: clamp(13px, 1.6vw, 16px); }

/* Ken Burns: nền banner zoom chậm khi tải trang */
@keyframes dntu-kenburns { from { transform: scale(1.08); } to { transform: scale(1); } }
.dntu-banner-bg { animation: dntu-kenburns 14s ease-out both; will-change: transform; }

/* Điểm sáng radial trên overlay cho chiều sâu */
.dntu-banner-overlay::after {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(circle at 76% 18%, rgba(255,223,185,.20), transparent 56%);
    pointer-events: none;
}

/* ── Thanh tìm kiếm: focus-ring + nút nhấn nảy ──────────────── */
.dntu-search-inner { transition: box-shadow .25s ease, transform .25s ease; }
.dntu-search-inner:focus-within {
    box-shadow: 0 10px 34px rgba(0,0,0,.26), 0 0 0 4px rgba(255,223,185,.40);
    transform: translateY(-1px);
}
.dntu-search-btn { transition: background .2s ease, transform .15s ease; }
.dntu-search-btn:hover { transform: translateY(-1px); }
.dntu-search-btn:active { transform: translateY(0); }

/* Tìm kiếm nâng cao link — căn giữa khoảng cách */
.dntu-search-advanced-link { margin-top: 16px; }

/* ── Hero CTA + dải tin cậy ─────────────────────────────────── */
.dntu-hero-cta {
    display: flex; flex-wrap: wrap; justify-content: center;
    align-items: center; gap: 12px; margin-top: 26px;
}
.dntu-hero-cta-ghost {
    display: inline-flex; align-items: center; gap: 8px;
    color: #fff; font-weight: 600; font-size: 16.5px;
    border: 1px solid rgba(255,255,255,.45); border-radius: 999px;
    padding: 11px 24px; text-decoration: none;
    transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.dntu-hero-cta-ghost:hover {
    background: rgba(255,255,255,.14); border-color: #fff;
    color: #fff; transform: translateY(-2px);
}
.dntu-hero-trust {
    display: flex; flex-wrap: wrap; justify-content: center;
    gap: 10px 28px; margin-top: 22px;
    font-size: 15.5px; color: rgba(255,255,255,.72);
}
.dntu-hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.dntu-hero-trust i { color: var(--dntu-accent); }
@media (max-width: 575px) {
    .dntu-hero-cta { gap: 10px; }
    .dntu-hero-cta .btn-dntu-cta,
    .dntu-hero-cta-ghost { width: 100%; max-width: 280px; justify-content: center; }
    .dntu-hero-trust { gap: 8px 18px; font-size: 14.5px; }
}

/* ── Vi tương tác: tiêu đề section + divider “mọc” khi reveal ── */
.dntu-section-title { transition: color .25s ease; }
.dntu-reveal.dntu-in .dntu-divider,
.dntu-reveal.dntu-in.dntu-divider { animation: dntu-divider-grow .6s ease both; }
@keyframes dntu-divider-grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.dntu-divider { transform-origin: center; }

/* ── Nhịp khoảng cách giữa các section đồng nhất hơn ────────── */
@media (min-width: 992px) {
    .dntu-section { padding: 64px 0; }
}

/* ── Mobile: thanh tìm kiếm xếp dọc trên màn hình rất nhỏ ───── */
@media (max-width: 480px) {
    .dntu-search-inner { flex-wrap: wrap; border-radius: 18px; padding: 8px; gap: 8px; }
    .dntu-search-inner input { flex: 1 1 100%; padding: 9px 8px; }
    .dntu-search-btn { flex: 1 1 100%; border-radius: 12px; padding: 12px; font-size: 17px; }
    .dntu-banner-content { padding: 48px 14px; }
    .dntu-scroll-cue { display: none; }
}

/* Resource grid: gọn hơn ở mobile, giữ 2 cột */
@media (max-width: 575px) {
    .dntu-resource-grid { gap: 12px; }
    .dntu-section-header { flex-wrap: wrap; gap: 8px; }
}

/* Tôn trọng reduced-motion cho hiệu ứng mới */
@media (prefers-reduced-motion: reduce) {
    .dntu-banner-bg { animation: none; }
    .dntu-reveal.dntu-in .dntu-divider,
    .dntu-reveal.dntu-in.dntu-divider { animation: none; }
}


/* ── Chuyen ngon ngu: 2 nut (2026-09-01) ── */
.dntu-lang-group {
    display: inline-flex; align-items: center; gap: 4px;
    background: var(--dntu-bg-soft); border: 1px solid var(--dntu-border);
    border-radius: 999px; padding: 3px;
}
.dntu-lang-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 12px; border: 0; background: transparent;
    border-radius: 999px; cursor: pointer; line-height: 1;
    font-family: var(--font-body); font-size: 15px; font-weight: 600;
    color: var(--dntu-text-muted); transition: var(--dntu-transition);
}
/* Nay là asp:LinkButton (<a>): bỏ gạch chân mặc định của Bootstrap (a:hover có độ ưu tiên cao hơn) */
.dntu-lang-btn, .dntu-lang-btn:hover, .dntu-lang-btn:focus { text-decoration: none; }
.dntu-lang-btn .dntu-lang-flag { font-size: 17px; line-height: 1; }
.dntu-lang-btn:hover { color: var(--dntu-primary); background: var(--dntu-white); }
.dntu-lang-btn.is-active {
    background: var(--dntu-primary); color: var(--dntu-white);
    box-shadow: 0 1px 4px rgba(var(--dntu-primary-dk-rgb), .35);
}
.dntu-lang-btn.is-active:hover { background: var(--dntu-primary-dk); color: var(--dntu-white); }
/* Mobile / tablet (≤991px): chỉ hiện cờ cho gọn, nút cao hơn để dễ chạm (~34px, tổng nhóm ~41px) */
@media (max-width: 991px) {
    .dntu-lang-btn .dntu-lang-code { display: none; }
    .dntu-lang-btn { padding: 8px 12px; }
}
/* Màn rất hẹp (≤359px): thu gọn thêm để tên thư viện không xuống dòng vì chật */
@media (max-width: 359px) {
    .dntu-lang-group { gap: 2px; }
    .dntu-lang-btn { padding: 8px 9px; }
}

/* ── Anh gio mo cua tren header ── */
.dntu-opening-hours { height: 40px; width: auto; display: block; flex-shrink: 0; }
@media (max-width: 1199px) { .dntu-opening-hours { display: none; } }

/* ══ HERO — chinh lai 2026-09-01 ═══════════════════════════════
   1. .dntu-banner-bg truoc day khong co position/size nen anh nen
      (inline style tren #dntu-banner-bg) khong bao gio hien ra.
   2. Overlay nhe hon de thay ro anh.
   3. Vung .dntu-search-wrap to len, cac vung khac thu lai cho can. */

.dntu-banner-bg {
    position: absolute; inset: 0; z-index: 0;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
}

/* Overlay sang hon: du doc chu trang nhung van thay anh */
.dntu-banner-overlay {
    background: linear-gradient(135deg, rgba(46,20,27,0.46) 0%, rgba(164,25,61,0.30) 100%);
}
.dntu-banner-overlay::after {
    background:
        radial-gradient(circle at 76% 18%, rgba(255,223,185,.16), transparent 56%),
        linear-gradient(to bottom, rgba(46,20,27,.30) 0%, transparent 32%, transparent 62%, rgba(46,20,27,.34) 100%);
}

/* Can lai ti le: tieu de gon hon, nhuong cho o tim kiem */
.dntu-banner { min-height: clamp(420px, 64vh, 600px); }
.dntu-banner-content { padding: clamp(52px, 7.5vw, 84px) 16px; }
.dntu-banner-title { font-size: clamp(26px, 4.1vw, 40px); margin: 0 0 10px; }
.dntu-banner-sub   { font-size: clamp(13px, 1.5vw, 15.5px); margin: 0 0 26px; }

/* O tim kiem: vung chinh cua hero */
.dntu-search-wrap { max-width: 900px; margin: 0 auto; }
.dntu-search-inner {
    padding: 8px 8px 8px 30px;
    box-shadow: 0 10px 38px rgba(0,0,0,0.26);
}
.dntu-search-inner input { font-size: 21px; padding: 10px 0; }
.dntu-search-btn { font-size: 23px; padding: 13px 32px; }
.dntu-search-advanced-link { margin-top: 16px; }
.dntu-search-advanced-link a { font-size: 16px; }

/* Khoang cach duoi o tim kiem */
.dntu-hero-cta { margin-top: 30px; }
.dntu-hero-trust { margin-top: 26px; }

@media (max-width: 767px) {
    .dntu-banner { min-height: clamp(380px, 70vh, 520px); }
    .dntu-search-inner { padding: 6px 6px 6px 20px; }
    .dntu-search-inner input { font-size: 17px; }
    .dntu-search-btn { font-size: 17px; padding: 11px 22px; }
}

/* ══ Thang chu +19% chi ap cho cac trang Portal (co #dntu-page-content) ══
   Truoc day dat tren body nen lan sang MasterOpac (TaiLieuTimKiem.aspx...),
   lam chu o trang tim kiem to va lech ti le. Cac utility .tw-* dung rem tinh
   theo html root nen giu dung mac dinh Tailwind. */
#dntu-page-content { font-size: 17px; }