/*
Theme Name: CNBV (GeneratePress child)
Theme URI: https://booking.khacdaunamviet.vn
Description: Cẩm Nang Booking Việt — child của GeneratePress, custom cho news ngách hotel/vé tàu/vé máy bay. Tối ưu Adsense + Trip.com affiliate + SEO + GEO.
Author: CNBV
Version: 2.0.0
Template: generatepress
Text Domain: cnbv-gp
*/

/* ========== Tokens ========== */
:root {
    --cnbv-primary:    #0a66c2;
    --cnbv-primary-dk: #084d92;
    --cnbv-accent:     #f5a623;
    --cnbv-text:       #1f2937;
    --cnbv-muted:      #6b7280;
    --cnbv-bg:         #ffffff;
    --cnbv-bg-soft:    #f7f9fc;
    --cnbv-border:     #e5e7eb;
    --cnbv-radius:     10px;
    --cnbv-shadow:     0 6px 18px rgba(0,0,0,.06);
    --cnbv-container:  1140px;
}

* { box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", "Helvetica Neue", Arial, sans-serif;
    color: var(--cnbv-text);
    background: var(--cnbv-bg);
    line-height: 1.65;
    margin: 0;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cnbv-primary); text-decoration: none; transition: color .15s; }
a:hover { color: var(--cnbv-primary-dk); }

.cnbv-container { max-width: var(--cnbv-container); margin: 0 auto; padding: 0 16px; }
.cnbv-skip { position: absolute; left: -9999px; top: -9999px; }
.cnbv-skip:focus { left: 8px; top: 8px; background: #fff; padding: 8px 12px; z-index: 9999; border: 2px solid var(--cnbv-primary); }

/* ========== Header ========== */
.cnbv-site-header {
    background: #fff;
    border-bottom: 1px solid var(--cnbv-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.cnbv-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    gap: 24px;
}
.cnbv-brand-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--cnbv-text);
    font-weight: 700;
}
.cnbv-brand-logo { font-size: 1.6rem; }
.cnbv-brand-name { font-size: 1.1rem; }
.cnbv-primary-nav .cnbv-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 4px;
}
.cnbv-menu li a {
    display: block;
    padding: 8px 14px;
    color: var(--cnbv-text);
    font-weight: 500;
    border-radius: 6px;
    font-size: .95rem;
}
.cnbv-menu li a:hover {
    background: var(--cnbv-bg-soft);
    color: var(--cnbv-primary);
}
.cnbv-menu li.current-cat a,
.cnbv-menu li.current-menu-item a {
    color: var(--cnbv-primary);
    background: var(--cnbv-bg-soft);
}
.cnbv-mobile-toggle {
    display: none;
    background: none;
    border: 1px solid var(--cnbv-border);
    padding: 8px 10px;
    cursor: pointer;
    border-radius: 6px;
}
.cnbv-mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--cnbv-text);
    margin: 4px 0;
}

/* ========== Hero ========== */
.cnbv-hero {
    position: relative;
    background:
        radial-gradient(60% 60% at 18% 0%, rgba(245,166,35,.20), transparent 60%),
        radial-gradient(70% 70% at 90% 100%, rgba(14,79,150,.55), transparent 60%),
        linear-gradient(135deg, #07315e 0%, #0a66c2 60%, #1a82e5 100%);
    color: #fff;
    padding: 60px 20px 48px;
    border-radius: 18px;
    margin: 28px auto 44px;
    max-width: var(--cnbv-container);
    box-shadow: 0 20px 60px -20px rgba(7,49,94,.45);
    overflow: hidden;
}
.cnbv-hero-inner { max-width: 920px; margin: 0 auto; text-align: center; }
.cnbv-hero-eyebrow {
    display: inline-block;
    font-size: .76rem;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: #ffd58f;
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,213,143,.35);
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 18px;
    font-weight: 600;
}
.cnbv-hero h1 {
    color: #fff;
    font-size: 2.5rem;
    margin: 0 0 14px;
    line-height: 1.18;
    font-weight: 800;
    letter-spacing: -0.015em;
}
.cnbv-hero h1 em { color: #ffd58f; font-style: normal; }
.cnbv-hero-sub { font-size: 1.08rem; opacity: .94; margin: 0 auto 28px; max-width: 720px; line-height: 1.6; }

/* Search card */
.cnbv-hero-search {
    background: #fff;
    color: var(--cnbv-text);
    border-radius: 14px;
    padding: 8px 8px 14px;
    max-width: 760px;
    margin: 0 auto 22px;
    box-shadow: 0 24px 60px -24px rgba(0,0,0,.4);
    text-align: left;
}
.cnbv-search-tabs {
    display: flex;
    gap: 4px;
    background: var(--cnbv-bg-soft);
    padding: 4px;
    border-radius: 10px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.cnbv-tab {
    flex: 1 1 auto;
    min-width: 110px;
    background: transparent;
    border: 0;
    color: var(--cnbv-muted);
    padding: 10px 12px;
    border-radius: 8px;
    font-weight: 600;
    font-size: .9rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background .15s, color .15s;
}
.cnbv-tab:hover { color: var(--cnbv-text); }
.cnbv-tab.is-active {
    background: #fff;
    color: var(--cnbv-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.cnbv-tab-icon { width: 16px; height: 16px; display: inline-flex; }
.cnbv-tab-icon svg { width: 100%; height: 100%; }

.cnbv-search-panes { padding: 6px; }
.cnbv-pane {
    display: none;
    grid-template-columns: 1fr 1fr auto;
    gap: 10px;
    align-items: end;
}
.cnbv-pane.is-active { display: grid; }
.cnbv-pane[data-pane="hotel"].is-active,
.cnbv-pane[data-pane="guide"].is-active { grid-template-columns: 1fr auto; }
.cnbv-field { display: flex; flex-direction: column; gap: 4px; }
.cnbv-field label { font-size: .76rem; color: var(--cnbv-muted); font-weight: 600; }
.cnbv-field input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--cnbv-border);
    border-radius: 8px;
    font-size: .95rem;
    background: #fff;
}
.cnbv-field input:focus {
    outline: none;
    border-color: var(--cnbv-primary);
    box-shadow: 0 0 0 3px rgba(10,102,194,.15);
}
.cnbv-search-btn {
    background: var(--cnbv-primary);
    color: #fff;
    border: 0;
    padding: 12px 22px;
    border-radius: 8px;
    font-weight: 700;
    font-size: .95rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    transition: background .15s;
}
.cnbv-search-btn:hover { background: var(--cnbv-primary-dk); }
.cnbv-search-btn .cnbv-icon { width: 16px; height: 16px; }
.cnbv-search-btn svg { width: 100%; height: 100%; }

/* Trust strip */
.cnbv-trust-strip {
    display: flex;
    gap: 28px;
    justify-content: center;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    margin: 0;
    color: rgba(255,255,255,.92);
    font-size: .88rem;
}
.cnbv-trust-strip li {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}
.cnbv-trust-icon { width: 18px; height: 18px; color: #ffd58f; display: inline-flex; }
.cnbv-trust-icon svg { width: 100%; height: 100%; }

/* SVG generic */
.cnbv-icon { display: inline-flex; vertical-align: middle; }
.cnbv-icon svg { width: 100%; height: 100%; }

/* ========== Cluster grid ========== */
.cnbv-cluster {
    max-width: var(--cnbv-container);
    margin: 0 auto 44px;
    padding: 0 16px;
}
.cnbv-cluster-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--cnbv-border);
    padding-bottom: 12px;
    margin-bottom: 20px;
    position: relative;
}
.cnbv-cluster-head::after {
    content: "";
    position: absolute;
    left: 0; bottom: -1px;
    width: 64px;
    height: 3px;
    background: var(--cnbv-primary);
    border-radius: 2px;
}
.cnbv-cluster-head h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.cnbv-cluster-icon { width: 24px; height: 24px; color: var(--cnbv-primary); display: inline-flex; }
.cnbv-cluster-icon svg { width: 100%; height: 100%; }
.cnbv-cluster-more {
    font-size: .88rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--cnbv-primary);
}
.cnbv-cluster-arrow { width: 14px; height: 14px; }
.cnbv-cluster-arrow svg { width: 100%; height: 100%; }

/* Grid: 3 cols desktop, 2 cols tablet, 1 col mobile (fixed: tránh dư cột làm "4-2") */
.cnbv-cluster-grid,
.cnbv-archive-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
@media (max-width: 900px) {
    .cnbv-cluster-grid, .cnbv-archive-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
    .cnbv-cluster-grid, .cnbv-archive-grid { grid-template-columns: 1fr; }
}
.cnbv-card-feature { box-shadow: 0 6px 18px rgba(10,102,194,.10); }
.cnbv-card-feature .cnbv-card-thumb { background: linear-gradient(135deg,#eaf3fb,#fff7e8); }
.cnbv-card {
    background: #fff;
    border: 1px solid var(--cnbv-border);
    border-radius: var(--cnbv-radius);
    overflow: hidden;
    transition: transform .15s, box-shadow .15s;
}
.cnbv-card:hover {
    box-shadow: var(--cnbv-shadow);
    transform: translateY(-2px);
}
.cnbv-card-thumb {
    display: block;
    aspect-ratio: 16/9;
    background: var(--cnbv-bg-soft);
    overflow: hidden;
}
.cnbv-card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.cnbv-card-thumb-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    font-size: 2rem;
    color: var(--cnbv-muted);
}
.cnbv-card-body { padding: 14px 16px; }
.cnbv-card-cat {
    display: inline-block;
    font-size: .68rem;
    color: var(--cnbv-primary);
    background: var(--cnbv-bg-soft);
    padding: 3px 8px;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: .04em;
    font-weight: 700;
}
.cnbv-card-title { margin: 8px 0; font-size: 1rem; line-height: 1.4; font-weight: 600; }
.cnbv-card-title a { color: var(--cnbv-text); }
.cnbv-card-title a:hover { color: var(--cnbv-primary); }
.cnbv-card-meta { font-size: .78rem; color: var(--cnbv-muted); }
.cnbv-card-excerpt { color: var(--cnbv-muted); font-size: .88rem; margin: 8px 0 0; }

/* ========== Single layout ========== */
.cnbv-layout-single,
.cnbv-layout-archive {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 32px;
    margin: 28px auto 60px;
    align-items: start;
}
.cnbv-content { min-width: 0; }
.cnbv-breadcrumb { font-size: .85rem; color: var(--cnbv-muted); margin-bottom: 14px; }
.cnbv-breadcrumb a { color: var(--cnbv-muted); }
.cnbv-breadcrumb a:hover { color: var(--cnbv-primary); }
.cnbv-article-head .entry-title { font-size: 2rem; line-height: 1.25; margin: 0 0 10px; font-weight: 800; }
.cnbv-meta { font-size: .85rem; color: var(--cnbv-muted); display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 18px; }
.cnbv-article-featured img { border-radius: var(--cnbv-radius); margin: 0 0 22px; }

.cnbv-prose { font-size: 1.05rem; line-height: 1.75; color: var(--cnbv-text); }
.cnbv-prose h2 {
    font-size: 1.45rem;
    margin: 36px 0 14px;
    padding-left: 12px;
    border-left: 4px solid var(--cnbv-primary);
    line-height: 1.35;
}
.cnbv-prose h3 { font-size: 1.15rem; margin: 26px 0 10px; color: var(--cnbv-primary-dk); }
.cnbv-prose p { margin: 0 0 16px; }
.cnbv-prose ul, .cnbv-prose ol { margin: 0 0 16px; padding-left: 22px; }
.cnbv-prose li { margin: 4px 0; }
.cnbv-prose blockquote {
    border-left: 4px solid var(--cnbv-accent);
    background: var(--cnbv-bg-soft);
    padding: 12px 18px;
    margin: 20px 0;
    border-radius: 4px;
    font-style: italic;
}
.cnbv-prose table { width: 100%; border-collapse: collapse; margin: 18px 0; }
.cnbv-prose th, .cnbv-prose td { border: 1px solid var(--cnbv-border); padding: 8px 12px; text-align: left; }
.cnbv-prose th { background: var(--cnbv-bg-soft); }
.cnbv-prose img { border-radius: 8px; margin: 16px 0; }

/* FAQ block */
.cnbv-faq h2 { border-left-color: var(--cnbv-accent); }
.cnbv-faq h3 { color: var(--cnbv-primary-dk); }
.cnbv-faq h3::before { content: "❓ "; color: var(--cnbv-accent); }

/* ========== Sidebar ========== */
.cnbv-sidebar {
    position: sticky;
    top: 88px;
    align-self: start;
    display: flex;
    flex-direction: column;
    gap: 22px;
}
.cnbv-widget {
    background: #fff;
    border: 1px solid var(--cnbv-border);
    border-radius: var(--cnbv-radius);
    padding: 16px 18px;
}
.cnbv-widget h3 { margin: 0 0 12px; font-size: 1rem; padding-bottom: 8px; border-bottom: 1px solid var(--cnbv-border); }
.cnbv-widget ul { list-style: none; padding: 0; margin: 0; }
.cnbv-widget-related li { padding: 8px 0; border-bottom: 1px dashed var(--cnbv-border); }
.cnbv-widget-related li:last-child { border-bottom: none; }
.cnbv-widget-related li a { display: flex; gap: 10px; align-items: center; color: var(--cnbv-text); }
.cnbv-widget-related li a:hover { color: var(--cnbv-primary); }
.cnbv-widget-related li img { width: 64px; height: 48px; object-fit: cover; border-radius: 4px; flex-shrink: 0; }
.cnbv-widget-related li span { font-size: .9rem; line-height: 1.4; }

/* ========== Adsense slots ========== */
.cnbv-ad { display: block; margin: 22px auto; text-align: center; }
.cnbv-ad-top         { min-height: 100px; max-width: 970px; }
.cnbv-ad-in-article  { min-height: 280px; max-width: 728px; }
.cnbv-ad-sidebar     { min-height: 600px; }
.cnbv-ad::before {
    content: "Quảng cáo";
    display: block;
    font-size: .7rem;
    color: var(--cnbv-muted);
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-bottom: 6px;
}

/* ========== Trip.com ========== */
.cnbv-tripcom-banner {
    display: flex;
    align-items: center;
    gap: 14px;
    background: linear-gradient(135deg, #fff7e8 0%, #fef3d6 100%);
    border: 1px solid #f0d896;
    border-radius: var(--cnbv-radius);
    padding: 14px 18px;
    margin: 18px 0 24px;
}
.cnbv-tripcom-banner-icon { font-size: 1.8rem; }
.cnbv-tripcom-banner-body { flex: 1; line-height: 1.35; }
.cnbv-tripcom-banner-body strong { display: block; font-size: 1rem; color: var(--cnbv-text); }
.cnbv-tripcom-banner-body span { font-size: .85rem; color: var(--cnbv-muted); }
.cnbv-tripcom-cta {
    background: var(--cnbv-accent);
    color: #fff;
    padding: 10px 18px;
    border-radius: 6px;
    font-weight: 600;
    white-space: nowrap;
}
.cnbv-tripcom-cta:hover { background: #e0931d; color: #fff; }

.cnbv-tripcom-inline {
    background: var(--cnbv-bg-soft);
    border-left: 4px solid var(--cnbv-accent);
    padding: 14px 18px;
    border-radius: 6px;
    margin: 26px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}
.cnbv-tripcom-inline a {
    background: var(--cnbv-accent);
    color: #fff;
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 600;
    white-space: nowrap;
}
.cnbv-tripcom-inline a:hover { background: #e0931d; color: #fff; }

.cnbv-tripcom-cta-block {
    display: block;
    background: var(--cnbv-accent);
    color: #fff;
    text-align: center;
    padding: 12px 14px;
    border-radius: 6px;
    font-weight: 600;
    margin: 12px 0 6px;
}
.cnbv-tripcom-cta-block:hover { background: #e0931d; color: #fff; }
.cnbv-tripcom-disclosure { display: block; font-size: .72rem; color: var(--cnbv-muted); margin-top: 4px; }

.cnbv-tripcom-search form { display: flex; flex-direction: column; gap: 10px; }
.cnbv-tripcom-search label { display: block; font-size: .85rem; color: var(--cnbv-muted); }
.cnbv-tripcom-search input[type="text"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--cnbv-border);
    border-radius: 6px;
    font-size: .95rem;
    margin-top: 4px;
}
.cnbv-tripcom-search button {
    background: var(--cnbv-primary);
    color: #fff;
    border: 0;
    padding: 10px 16px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
}
.cnbv-tripcom-search button:hover { background: var(--cnbv-primary-dk); }

/* ========== CTA cluster ========== */
.cnbv-cta-cluster {
    background: var(--cnbv-bg-soft);
    border-left: 4px solid var(--cnbv-primary);
    padding: 18px 22px;
    border-radius: 6px;
    margin: 28px 0;
}
.cnbv-cta-cluster h3 { margin: 0 0 12px; font-size: 1.1rem; }
.cnbv-cta-cluster ul { margin: 0; padding-left: 18px; }
.cnbv-cta-cluster li { margin: 6px 0; }
.cnbv-cta-cluster a { font-weight: 600; }
.cnbv-cta-cluster a:hover { text-decoration: underline; }

/* ========== Archive ========== */
.cnbv-archive-head { margin: 4px 0 24px; }
.cnbv-archive-title { font-size: 1.8rem; margin: 0 0 6px; }
.cnbv-archive-desc { color: var(--cnbv-muted); }
.cnbv-pagination { margin: 32px 0; display: flex; justify-content: center; }
.cnbv-pagination .page-numbers {
    display: inline-block;
    padding: 8px 14px;
    margin: 0 3px;
    border: 1px solid var(--cnbv-border);
    border-radius: 6px;
    color: var(--cnbv-text);
}
.cnbv-pagination .page-numbers.current { background: var(--cnbv-primary); color: #fff; border-color: var(--cnbv-primary); }

/* ========== Footer ========== */
.cnbv-site-footer {
    background: #0e1726;
    color: #cbd5e1;
    margin-top: 60px;
}
.cnbv-footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 36px;
    padding: 48px 16px 28px;
    max-width: var(--cnbv-container);
    margin: 0 auto;
}
.cnbv-footer-col h4 { color: #fff; font-size: 1rem; margin: 0 0 12px; }
.cnbv-footer-col ul { list-style: none; padding: 0; margin: 0; }
.cnbv-footer-col ul li { margin: 6px 0; }
.cnbv-footer-col ul li a { color: #cbd5e1; font-size: .9rem; }
.cnbv-footer-col ul li a:hover { color: #fff; }
.cnbv-footer-brand strong { color: #fff; font-size: 1.15rem; display: block; margin-bottom: 8px; }
.cnbv-footer-brand p { font-size: .9rem; line-height: 1.6; margin: 0; max-width: 420px; }
.cnbv-footer-credit {
    background: #0a1220;
    color: #94a3b8;
    text-align: center;
    padding: 14px 16px;
    font-size: .82rem;
}

/* ========== Responsive ========== */
@media (max-width: 900px) {
    .cnbv-layout-single, .cnbv-layout-archive { grid-template-columns: 1fr; }
    .cnbv-sidebar { position: static; }
    .cnbv-footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
    .cnbv-mobile-toggle { display: block; }
    .cnbv-primary-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--cnbv-border); padding: 8px 16px 16px; }
    .cnbv-primary-nav.is-open { display: block; }
    .cnbv-primary-nav .cnbv-menu { flex-direction: column; gap: 0; }
    .cnbv-primary-nav .cnbv-menu li a { padding: 12px 8px; border-bottom: 1px solid var(--cnbv-border); }
    .cnbv-hero { padding: 44px 18px 32px; margin: 16px auto 28px; }
    .cnbv-hero h1 { font-size: 1.75rem; }
    .cnbv-pane { grid-template-columns: 1fr !important; }
    .cnbv-search-btn { width: 100%; justify-content: center; }
    .cnbv-trust-strip { gap: 14px; font-size: .82rem; }
    .cnbv-trust-strip li { width: 100%; justify-content: center; }
    .cnbv-article-head .entry-title { font-size: 1.5rem; }
    .cnbv-footer-inner { grid-template-columns: 1fr; }
    .cnbv-tripcom-banner { flex-direction: column; text-align: center; }
}