/* ==========================================================================
   Kira TipCongNghe — main stylesheet
   Tông màu cam→đỏ, layout magazine tin tức công nghệ, responsive.
   ========================================================================== */

:root {
	--ktcn-accent: #ff5b2e;
	--ktcn-accent-2: #e02f1d;
	--ktcn-ink: #15181d;
	--ktcn-body: #3a3f47;
	--ktcn-muted: #6b7280;
	--ktcn-line: #e7e9ee;
	--ktcn-bg: #f5f6f8;
	--ktcn-card: #ffffff;
	--ktcn-radius: 12px;
	--ktcn-shadow: 0 6px 22px rgba(20, 24, 29, .07);
	--ktcn-container: 1200px;
	--ktcn-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
	margin: 0;
	font-family: var(--ktcn-font);
	color: var(--ktcn-body);
	background: var(--ktcn-bg);
	line-height: 1.65;
	font-size: 16px;
	-webkit-font-smoothing: antialiased;
}

a { color: var(--ktcn-accent-2); text-decoration: none; }
a:hover { color: var(--ktcn-accent); }
img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 { color: var(--ktcn-ink); line-height: 1.25; font-weight: 700; }

.container { width: 100%; max-width: var(--ktcn-container); margin: 0 auto; padding: 0 20px; }

.screen-reader-text {
	position: absolute !important; width: 1px; height: 1px; overflow: hidden;
	clip: rect(1px, 1px, 1px, 1px); white-space: nowrap;
}
.skip-link { position: absolute; left: -9999px; top: 0; background: #fff; padding: 10px 16px; z-index: 1000; }
.skip-link:focus { left: 10px; }

/* ---------- Topbar ---------- */
.topbar { background: var(--ktcn-ink); color: #c9ced6; font-size: 13px; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; height: 38px; }
.topbar-meta strong { color: #fff; }

/* ---------- Header ---------- */
.site-header { background: #fff; border-bottom: 1px solid var(--ktcn-line); position: sticky; top: 0; z-index: 50; }
.header-inner { display: flex; align-items: center; gap: 22px; min-height: 78px; }
.site-branding img, .custom-logo { max-height: 52px; width: auto; }
.main-navigation { margin-left: auto; }
.primary-menu { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; flex-wrap: wrap; }
.primary-menu li { position: relative; }
.primary-menu a {
	display: block; padding: 10px 14px; color: var(--ktcn-ink); font-weight: 600;
	font-size: 15px; border-radius: 8px; transition: .15s;
}
.primary-menu a:hover, .primary-menu .current-menu-item > a { color: #fff; background: var(--ktcn-accent); }
.primary-menu .sub-menu {
	position: absolute; top: 100%; left: 0; min-width: 200px; background: #fff;
	box-shadow: var(--ktcn-shadow); border: 1px solid var(--ktcn-line); border-radius: 10px;
	padding: 6px; display: none; z-index: 60;
}
.primary-menu li:hover > .sub-menu { display: block; }
.primary-menu .sub-menu a { color: var(--ktcn-body); }

.header-search { width: 230px; }
.menu-toggle { display: none; }

/* ---------- Search form ---------- */
.search-form { display: flex; align-items: center; background: var(--ktcn-bg); border: 1px solid var(--ktcn-line); border-radius: 999px; overflow: hidden; }
.search-form .search-field { border: 0; background: transparent; padding: 9px 14px; flex: 1; width: 100%; font-size: 14px; outline: none; }
.search-form .search-submit { border: 0; background: var(--ktcn-accent); color: #fff; padding: 0 16px; align-self: stretch; cursor: pointer; font-size: 18px; }
.search-form .search-submit:hover { background: var(--ktcn-accent-2); }

/* ---------- Layout ---------- */
.content-layout, .front-layout { display: grid; grid-template-columns: 1fr 330px; gap: 36px; padding-top: 30px; padding-bottom: 50px; }
.ktcn-no-sidebar .content-layout { grid-template-columns: 1fr; }
.site-main { min-width: 0; }

/* ---------- Breadcrumb ---------- */
.ktcn-breadcrumb { font-size: 13px; color: var(--ktcn-muted); margin-bottom: 16px; }
.ktcn-breadcrumb a { color: var(--ktcn-muted); }
.ktcn-breadcrumb a:hover { color: var(--ktcn-accent); }
.ktcn-breadcrumb .sep { margin: 0 8px; opacity: .5; }
.ktcn-breadcrumb .current { color: var(--ktcn-ink); font-weight: 600; }

/* ---------- Page header ---------- */
.page-header { margin-bottom: 24px; padding-bottom: 18px; border-bottom: 2px solid var(--ktcn-line); }
.page-title { font-size: 30px; margin: 0 0 6px; }
.page-title span { color: var(--ktcn-accent); }
.page-subtitle { color: var(--ktcn-muted); margin: 0; }
.archive-description { color: var(--ktcn-muted); margin-top: 8px; }

/* ---------- Badge ---------- */
.badge { display: inline-block; background: var(--ktcn-accent); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 6px; text-transform: uppercase; letter-spacing: .03em; }
.badge:hover { color: #fff; background: var(--ktcn-accent-2); }
.badge-sm { font-size: 11px; padding: 2px 8px; }

/* ---------- Grid + Cards ---------- */
.ktcn-grid { display: grid; gap: 24px; }
.ktcn-grid-2 { grid-template-columns: repeat(2, 1fr); }
.ktcn-grid-3 { grid-template-columns: repeat(3, 1fr); }

.ktcn-card { background: var(--ktcn-card); border: 1px solid var(--ktcn-line); border-radius: var(--ktcn-radius); overflow: hidden; display: flex; flex-direction: column; transition: .18s; }
.ktcn-card:hover { transform: translateY(-3px); box-shadow: var(--ktcn-shadow); }
.card-thumb { position: relative; display: block; aspect-ratio: 16 / 10; overflow: hidden; }
.card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: .3s; }
.ktcn-card:hover .card-thumb img { transform: scale(1.05); }
.card-badge { position: absolute; left: 12px; bottom: 12px; background: var(--ktcn-accent); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 6px; }
.card-body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 8px; }
.card-title { font-size: 18px; margin: 0; line-height: 1.35; }
.card-title a { color: var(--ktcn-ink); }
.card-title a:hover { color: var(--ktcn-accent); }
.card-excerpt { color: var(--ktcn-muted); font-size: 14px; margin: 0; }
.card-meta { color: var(--ktcn-muted); font-size: 12.5px; margin-top: auto; display: flex; align-items: center; gap: 8px; }
.card-meta .dot { opacity: .5; }

/* ---------- Hero ---------- */
.ktcn-hero { display: grid; grid-template-columns: 1.5fr 1fr; gap: 24px; padding-top: 30px; }
.hero-card { position: relative; border-radius: var(--ktcn-radius); overflow: hidden; background: #000; min-height: 420px; }
.hero-thumb { display: block; height: 100%; }
.hero-thumb img { width: 100%; height: 100%; object-fit: cover; opacity: .9; min-height: 420px; }
.hero-body { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px; background: linear-gradient(transparent, rgba(0,0,0,.85)); color: #fff; }
.hero-title { font-size: 26px; margin: 12px 0 8px; }
.hero-title a { color: #fff; }
.hero-excerpt { color: #e7e9ee; margin: 0 0 8px; font-size: 15px; }
.hero-meta { font-size: 13px; color: #c9ced6; }

.hero-side { display: flex; flex-direction: column; gap: 16px; }
.hero-mini { display: grid; grid-template-columns: 110px 1fr; gap: 12px; background: #fff; border: 1px solid var(--ktcn-line); border-radius: 10px; overflow: hidden; }
.hero-mini-thumb img { width: 110px; height: 86px; object-fit: cover; }
.hero-mini-body { padding: 10px 12px 10px 0; display: flex; flex-direction: column; gap: 6px; }
.hero-mini-body h3 { font-size: 15px; margin: 0; line-height: 1.35; }
.hero-mini-body h3 a { color: var(--ktcn-ink); }
.hero-mini-body h3 a:hover { color: var(--ktcn-accent); }

/* ---------- Front blocks ---------- */
.front-block { margin-bottom: 40px; }
.block-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; border-bottom: 2px solid var(--ktcn-ink); padding-bottom: 8px; }
.block-title { font-size: 21px; margin: 0; position: relative; }
.block-title-cat a { color: var(--ktcn-ink); }
.block-title-cat a:hover { color: var(--ktcn-accent); }
.block-more { font-size: 14px; font-weight: 600; }

/* ---------- Single / Page ---------- */
.single-post, .single-page { background: #fff; border: 1px solid var(--ktcn-line); border-radius: var(--ktcn-radius); padding: 30px; }
.entry-header { margin-bottom: 20px; }
.entry-title { font-size: 32px; margin: 12px 0 14px; line-height: 1.25; }
.page-entry-header .entry-title { margin-top: 0; }
.entry-meta { color: var(--ktcn-muted); font-size: 14px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.entry-meta .dot { opacity: .5; }
.entry-featured { margin: 0 0 24px; border-radius: var(--ktcn-radius); overflow: hidden; }
.entry-featured img { width: 100%; object-fit: cover; }
.entry-content { font-size: 17px; color: var(--ktcn-body); }
.entry-content p { margin: 0 0 18px; }
.entry-content h2 { font-size: 23px; margin: 30px 0 12px; padding-left: 12px; border-left: 4px solid var(--ktcn-accent); }
.entry-content h3 { font-size: 19px; margin: 24px 0 10px; }
.entry-content ul, .entry-content ol { margin: 0 0 18px; padding-left: 22px; }
.entry-content li { margin-bottom: 8px; }
.entry-content img { border-radius: 10px; margin: 10px 0; }
.entry-content a { text-decoration: underline; }
.entry-content blockquote { margin: 20px 0; padding: 14px 20px; border-left: 4px solid var(--ktcn-accent); background: var(--ktcn-bg); border-radius: 6px; }

.entry-footer { margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--ktcn-line); display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; }
.entry-tags { font-size: 14px; }
.tag-label { font-weight: 700; color: var(--ktcn-ink); }
.entry-share { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.share-link { background: var(--ktcn-bg); border: 1px solid var(--ktcn-line); padding: 6px 12px; border-radius: 6px; font-weight: 600; }
.share-link:hover { background: var(--ktcn-accent); color: #fff; border-color: var(--ktcn-accent); }

/* ---------- Related ---------- */
.ktcn-related { margin-top: 40px; }
.ktcn-related .block-title { border-bottom: 2px solid var(--ktcn-ink); padding-bottom: 8px; margin-bottom: 18px; }

/* ---------- Category cover ---------- */
.category-cover { position: relative; height: 280px; overflow: hidden; }
.category-cover-img { width: 100%; height: 100%; object-fit: cover; }
.category-cover-overlay { position: absolute; inset: 0; display: flex; align-items: flex-end; background: linear-gradient(transparent, rgba(0,0,0,.78)); color: #fff; padding-bottom: 28px; }
.category-cover-title { color: #fff; font-size: 36px; margin: 0 0 8px; }
.category-cover-desc { color: #e7e9ee; max-width: 720px; }

/* ---------- Sidebar ---------- */
.widget-area .widget { background: #fff; border: 1px solid var(--ktcn-line); border-radius: var(--ktcn-radius); padding: 20px; margin-bottom: 24px; }
.widget-title { font-size: 16px; margin: 0 0 14px; padding-bottom: 10px; border-bottom: 2px solid var(--ktcn-accent); display: inline-block; }
.widget ul { list-style: none; margin: 0; padding: 0; }
.widget ul li { padding: 8px 0; border-bottom: 1px dashed var(--ktcn-line); font-size: 14.5px; }
.widget ul li:last-child { border-bottom: 0; }
.recent-item { display: grid; grid-template-columns: 80px 1fr; gap: 12px; align-items: center; }
.recent-thumb img { width: 80px; height: 56px; object-fit: cover; border-radius: 8px; }
.recent-body a { color: var(--ktcn-ink); font-weight: 600; font-size: 14px; line-height: 1.35; display: block; }
.recent-body a:hover { color: var(--ktcn-accent); }
.recent-body time { font-size: 12px; color: var(--ktcn-muted); }

/* ---------- Pagination ---------- */
.pagination { margin-top: 34px; }
.pagination .nav-links { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.pagination .page-numbers { display: inline-flex; align-items: center; justify-content: center; min-width: 42px; height: 42px; padding: 0 12px; background: #fff; border: 1px solid var(--ktcn-line); border-radius: 8px; font-weight: 600; color: var(--ktcn-ink); }
.pagination .page-numbers.current, .pagination .page-numbers:hover { background: var(--ktcn-accent); color: #fff; border-color: var(--ktcn-accent); }

/* ---------- Buttons ---------- */
.btn { display: inline-block; background: var(--ktcn-accent); color: #fff; padding: 11px 22px; border-radius: 8px; font-weight: 700; border: 0; cursor: pointer; }
.btn:hover { background: var(--ktcn-accent-2); color: #fff; }

/* ---------- 404 ---------- */
.error-404 { background: #fff; border: 1px solid var(--ktcn-line); border-radius: var(--ktcn-radius); padding: 40px; text-align: center; }
.error-illustration { font-size: 90px; font-weight: 800; color: var(--ktcn-accent); line-height: 1; }
.error-search { max-width: 420px; margin: 18px auto 30px; }

/* ---------- Comments ---------- */
.comments-area { background: #fff; border: 1px solid var(--ktcn-line); border-radius: var(--ktcn-radius); padding: 28px; margin-top: 26px; }
.comments-title { font-size: 20px; margin: 0 0 18px; }
.comment-list { list-style: none; margin: 0 0 24px; padding: 0; }
.comment-list .comment { border-bottom: 1px solid var(--ktcn-line); padding: 14px 0; }
.comment-list ol.children { list-style: none; padding-left: 28px; }
.comment-form input[type=text], .comment-form input[type=email], .comment-form input[type=url], .comment-form textarea {
	width: 100%; padding: 10px 12px; border: 1px solid var(--ktcn-line); border-radius: 8px; font-family: inherit; margin-bottom: 12px;
}

/* ---------- Footer ---------- */
.site-footer { background: var(--ktcn-ink); color: #aab0ba; margin-top: 30px; }
.footer-widgets { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 34px; padding: 50px 20px 40px; }
.footer-logo { margin-bottom: 14px; }
.footer-col p { font-size: 14px; line-height: 1.7; }
.footer-col .widget-title, .footer-col h3 { color: #fff; font-size: 16px; margin: 0 0 14px; padding-bottom: 8px; border-bottom: 2px solid var(--ktcn-accent); display: inline-block; }
.footer-list, .footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-list li { padding: 6px 0; font-size: 14px; }
.footer-list a, .footer-col a { color: #aab0ba; }
.footer-list a:hover, .footer-col a:hover { color: var(--ktcn-accent); }
.footer-contact { font-size: 14px; }
.site-info { border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; }
.site-info-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 16px 20px; }
.site-info .credits { color: #7a818c; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
	.content-layout, .front-layout { grid-template-columns: 1fr; }
	.widget-area { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
	.widget-area .widget { margin-bottom: 0; }
	.footer-widgets { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
	.ktcn-hero { grid-template-columns: 1fr; }
	.hero-card, .hero-thumb img { min-height: 320px; }
	.header-search { display: none; }
	.menu-toggle { display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 40px; margin-left: auto; background: var(--ktcn-bg); border: 1px solid var(--ktcn-line); border-radius: 8px; cursor: pointer; }
	.menu-toggle-bar, .menu-toggle::before, .menu-toggle::after { content: ""; display: block; width: 20px; height: 2px; background: var(--ktcn-ink); margin: 0 auto; }
	.main-navigation { position: absolute; top: 100%; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--ktcn-line); box-shadow: var(--ktcn-shadow); display: none; }
	.main-navigation.toggled { display: block; }
	.primary-menu { flex-direction: column; padding: 10px; gap: 0; }
	.primary-menu a { padding: 12px 14px; border-radius: 8px; }
	.primary-menu .sub-menu { position: static; display: block; box-shadow: none; border: 0; padding-left: 14px; }
}
@media (max-width: 640px) {
	.ktcn-grid-2, .ktcn-grid-3 { grid-template-columns: 1fr; }
	.widget-area { grid-template-columns: 1fr; }
	.footer-widgets { grid-template-columns: 1fr; }
	.entry-title { font-size: 25px; }
	.single-post, .single-page { padding: 20px; }
	.page-title { font-size: 24px; }
	.hero-mini { grid-template-columns: 96px 1fr; }
	.hero-mini-thumb img { width: 96px; }
}