/* =========================================================================
   blog.css – Trang Tin tức, chuyên mục, bài viết – VNTRIP TMS
   Theo bản xem trước đã duyệt (preview/blog/). Chỉ tải ở trang blog (body.vt-blog).
   Màu, bo góc, đổ bóng: lấy từ tokens.css (--vt-*).
   ========================================================================= */

.vt-blog .site-content { background: #fff; }
/* Khung nội dung Astra xếp các phần theo hàng ngang → trang blog xếp dọc, toàn chiều rộng */
.vt-blog .site-content > .ast-container { display: block; max-width: none; padding: 0; }
.vt-blog-page { width: 100%; }
.vt-blog .vt-wrap { max-width: var(--vt-container); margin: 0 auto; padding: 0 var(--vt-gutter); }
.vt-blog .vt-narrow { max-width: calc(1040px + 2 * var(--vt-gutter)); }

/* Nút */
.vt-blog .vt-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 48px; padding: 0 22px; border-radius: var(--vt-r-btn); font-family: var(--vt-font); font-size: 16px; font-weight: 600; line-height: 1; white-space: nowrap; text-decoration: none; border: 0; cursor: pointer; transition: transform .15s var(--vt-ease), box-shadow .15s var(--vt-ease); }
.vt-blog .vt-btn-primary { background: var(--vt-yellow); color: var(--vt-dark); box-shadow: var(--vt-sh-y); }
.vt-blog .vt-btn-primary:hover { transform: translateY(-2px); color: var(--vt-dark); }
.vt-blog .vt-btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, .3); }
.vt-blog .vt-btn-ghost:hover { border-color: var(--vt-yellow); color: #fff; }
.vt-blog .vt-btn-sm { height: 42px; padding: 0 18px; font-size: 15px; }

/* Breadcrumb (tự dựng hoặc Rank Math) */
.vt-blog .vt-crumb, .vt-blog .vt-crumb .rank-math-breadcrumb p { margin: 0 0 14px; font-size: 14px; color: var(--vt-text-2); }
.vt-blog .vt-crumb a { color: var(--vt-text-2); text-decoration: none; }
.vt-blog .vt-crumb a:hover { color: var(--vt-dark); text-decoration: underline; text-decoration-color: var(--vt-yellow); }
.vt-blog .vt-crumb .sep, .vt-blog .vt-crumb .separator { margin: 0 6px; opacity: .6; }

/* Nhãn chuyên mục, dòng ngày */
.vt-blog .vt-chip { display: inline-block; align-self: flex-start; padding: 4px 10px; border-radius: 999px; background: rgba(252, 185, 19, .18); font-size: 12.5px; font-weight: 600; line-height: 1.5; color: var(--vt-dark); text-decoration: none; }
.vt-blog .vt-meta { display: flex; flex-wrap: wrap; gap: 8px 12px; font-size: 14px; color: var(--vt-text-2); }
.vt-blog .vt-meta .dot { opacity: .5; }
.vt-blog .vt-draft-tag { padding: 0 8px; border-radius: 6px; background: #FFE8A3; color: #6b5200; font-size: 12px; font-weight: 600; }

/* ---------- Trang Tin tức / chuyên mục ---------- */
.vt-blog-hero { background: var(--vt-gray); padding: 48px 0 40px; }
.vt-blog-eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--vt-text-2); }
.vt-blog-eyebrow::before { content: ""; width: 24px; height: 3px; border-radius: 2px; background: var(--vt-yellow); }
.vt-blog-hero h1 { margin: 12px 0 10px; font-family: var(--vt-font); font-size: clamp(30px, 4vw, 44px); font-weight: 700; line-height: 1.2; color: var(--vt-dark); }
.vt-blog-lead { max-width: 640px; margin: 0; font-size: 17px; color: var(--vt-text-2); }
.vt-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.vt-tab { display: inline-flex; align-items: center; height: 40px; padding: 0 16px; border: 1px solid var(--vt-border); border-radius: 999px; background: #fff; font-size: 15px; font-weight: 500; color: var(--vt-dark); text-decoration: none; }
.vt-tab:hover { border-color: var(--vt-dark); color: var(--vt-dark); }
.vt-tab.on { background: var(--vt-dark); border-color: var(--vt-dark); color: #fff; }
.vt-tab .n { margin-left: 8px; font-size: 12px; opacity: .7; }
.vt-draft-note { margin: 16px 0 0; font-size: 14px; color: #6b5200; }

.vt-blog-list { padding: 44px 0 64px; }
.vt-blog-empty { padding: 40px 0; font-size: 17px; color: var(--vt-text-2); }
.vt-thumb { display: block; overflow: hidden; aspect-ratio: 40 / 21; background: var(--vt-gray); }
.vt-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .4s var(--vt-ease); }
.vt-card-title { margin: 0; font-family: var(--vt-font); font-weight: 700; color: var(--vt-dark); }
.vt-card-title a { color: inherit; text-decoration: none; }
.vt-card-title a:hover { text-decoration: underline; text-decoration-color: var(--vt-yellow); text-underline-offset: 4px; }
.vt-card-excerpt { margin: 0; color: var(--vt-text-2); }

.vt-post-feature { display: grid; grid-template-columns: 1.15fr 1fr; gap: 36px; align-items: center; margin-bottom: 44px; }
.vt-post-feature .vt-thumb { border-radius: var(--vt-r-lg); }
.vt-post-feature:hover .vt-thumb img { transform: scale(1.03); }
.vt-post-feature .vt-card-body { display: flex; flex-direction: column; gap: 12px; }
.vt-post-feature .vt-card-title { font-size: clamp(24px, 2.6vw, 32px); line-height: 1.3; }
.vt-post-feature .vt-card-excerpt { font-size: 16.5px; }

.vt-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.vt-card { display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--vt-border); border-radius: var(--vt-r-card); background: #fff; transition: box-shadow .2s, transform .2s var(--vt-ease); }
.vt-card:hover { box-shadow: var(--vt-sh-2); transform: translateY(-3px); }
.vt-card .vt-card-body { display: flex; flex: 1; flex-direction: column; gap: 10px; padding: 18px 20px 20px; }
.vt-card .vt-card-title { display: -webkit-box; overflow: hidden; -webkit-line-clamp: 3; -webkit-box-orient: vertical; font-size: 18px; line-height: 1.4; }
.vt-card .vt-card-excerpt { display: -webkit-box; overflow: hidden; -webkit-line-clamp: 2; -webkit-box-orient: vertical; font-size: 15px; line-height: 1.6; }
.vt-card .vt-meta { margin-top: auto; font-size: 13.5px; }
/* Trang Tin tức ít bài (≤ 2): 2 thẻ lớn cạnh nhau (14/11/2026) */
.vt-grid--duo { grid-template-columns: repeat(2, 1fr); gap: 32px; }
.vt-grid--duo .vt-card .vt-card-body { gap: 12px; padding: 24px 26px 26px; }
.vt-grid--duo .vt-card .vt-card-title { font-size: clamp(20px, 2vw, 24px); line-height: 1.35; }
.vt-grid--duo .vt-card .vt-card-excerpt { -webkit-line-clamp: 3; font-size: 16px; }

.vt-pager { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 40px; }
.vt-pager .page-numbers { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 10px; border: 1px solid var(--vt-border); border-radius: 10px; font-weight: 600; color: var(--vt-dark); text-decoration: none; }
.vt-pager .page-numbers.current { background: var(--vt-yellow); border-color: var(--vt-yellow); }

/* Khối đăng ký nền tối */
.vt-blog-cta { padding: 0 0 64px; }
.vt-cta-card { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 28px; overflow: hidden; padding: 36px 40px; border-radius: var(--vt-r-lg); background: var(--vt-dark); color: #fff; }
.vt-cta-card::before { content: ""; position: absolute; left: -140px; bottom: -200px; width: 420px; height: 420px; background: radial-gradient(circle, rgba(252, 185, 19, .16), transparent 65%); pointer-events: none; }
.vt-cta-copy { position: relative; }
.vt-cta-card h2 { margin: 0 0 8px; font-family: var(--vt-font); font-size: clamp(22px, 2.4vw, 30px); line-height: 1.3; color: #fff; }
.vt-cta-card p { margin: 0; color: rgba(255, 255, 255, .72); }
.vt-cta-acts { position: relative; display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Khối Đăng ký CÓ FORM (14/11/2026) – giống khu Đăng ký trang chủ, form WPForms số 6 ---------- */
.vt-blog-reg { padding: 56px 0 64px; scroll-margin-top: 90px; }
.admin-bar .vt-blog-reg { scroll-margin-top: 122px; }
.vt-reg-card { position: relative; display: grid; grid-template-columns: .95fr 1.05fr; gap: 44px; align-items: center; overflow: hidden; padding: 36px 40px; border-radius: 24px; background: var(--vt-dark); color: #fff; }
.vt-reg-card::before { content: ""; position: absolute; left: -140px; bottom: -200px; width: 420px; height: 420px; background: radial-gradient(circle, rgba(252, 185, 19, .16), transparent 65%); pointer-events: none; }
.vt-reg-copy { position: relative; }
.vt-reg-copy h2 { margin: 0 0 12px; font-family: var(--vt-font); font-size: clamp(24px, 2.5vw, 34px); font-weight: 700; line-height: 1.3; color: #fff; }
.vt-reg-lead { margin: 0; font-size: 16px; line-height: 1.6; color: rgba(255, 255, 255, .72); }
.vt-reg-checks { display: grid; gap: 9px; margin: 20px 0 22px; padding: 0; list-style: none; }
.vt-reg-checks li { display: flex; align-items: center; gap: 12px; margin: 0; font-size: 17px; line-height: 1.6; color: rgba(255, 255, 255, .9); }
.vt-reg-checks li::before {
	content: ""; flex: none; width: 24px; height: 24px; border-radius: 50%;
	background: var(--vt-yellow) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2324243A' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 13px 13px no-repeat;
}
.vt-reg-quick { display: flex; flex-wrap: wrap; gap: 12px; }
.vt-reg-quick a { display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; border: 1px solid rgba(255, 255, 255, .25); border-radius: var(--vt-r-btn); font-size: 15px; font-weight: 600; line-height: 1.6; color: #fff; text-decoration: none; white-space: nowrap; transition: border-color .15s; }
.vt-reg-quick a:hover { border-color: var(--vt-yellow); color: #fff; }
.vt-reg-quick svg { width: 18px; height: 18px; color: var(--vt-yellow); }
.vt-reg-form-card { position: relative; padding: 24px 26px; border-radius: var(--vt-r-card); background: #fff; box-shadow: 0 24px 48px rgba(0, 0, 0, .25); color: var(--vt-text); }

/* Giao diện WPForms trong khối (chỉ CSS, không đổi cấu hình form) – theo home/register.css */
.vt-reg-form .wpforms-container {
	margin: 0;
	--wpforms-button-background-color: #FCB913; --wpforms-button-background-color-alt: #FCB913;
	--wpforms-button-text-color: #24243A; --wpforms-button-text-color-alt: #24243A; --wpforms-button-border-color: #FCB913;
}
.vt-reg-form .wpforms-container .wpforms-field-container { display: grid; grid-template-columns: 1fr 1fr; column-gap: 14px; }
.vt-reg-form .wpforms-container .wpforms-field { min-width: 0; margin: 0 0 12px; padding: 0; }
.vt-reg-form .wpforms-container .wpforms-field-textarea { grid-column: 1 / -1; }
.vt-reg-form .wpforms-container .wpforms-field-label { display: block; margin: 0 0 5px; font-family: var(--vt-font); font-size: 13.5px; font-weight: 600; line-height: 1.4; color: var(--vt-dark); }
.vt-reg-form .wpforms-container .wpforms-required-label { color: #c92a2a; }
.vt-reg-form .wpforms-container .wpforms-field input[type],
.vt-reg-form .wpforms-container .wpforms-field textarea { width: 100%; max-width: none; height: 44px; padding: 0 14px; border: 1px solid var(--vt-border); border-radius: var(--vt-r-input); background: #fff; box-shadow: none; font-family: var(--vt-font); font-size: 16px; color: var(--vt-text); transition: border-color .15s, box-shadow .15s; }
.vt-reg-form .wpforms-container .wpforms-field textarea { height: 68px; min-height: 68px; padding: 10px 14px; resize: vertical; }
.vt-reg-form .wpforms-container .wpforms-field input[type]:focus,
.vt-reg-form .wpforms-container .wpforms-field textarea:focus { outline: none; border-color: var(--vt-yellow); box-shadow: 0 0 0 2px rgba(252, 185, 19, .35); }
.vt-reg-form .wpforms-container .wpforms-error,
.vt-reg-form .wpforms-container label.wpforms-error { margin-top: 4px; font-size: 13px; color: #c92a2a; }
.vt-reg-form .wpforms-container .wpforms-field input.wpforms-error,
.vt-reg-form .wpforms-container .wpforms-field textarea.wpforms-error { border-color: #c92a2a; }
.vt-reg-form .wpforms-container .wpforms-submit-container { margin: 4px 0 0; padding: 0; }
.vt-reg-form div.wpforms-container button.wpforms-submit[type],
.vt-reg-form div.wpforms-container button.wpforms-submit[type]:not(:hover):not(:active) { width: 100%; height: 52px; padding: 0 24px; border: 0; border-radius: var(--vt-r-btn); background: var(--vt-yellow); color: var(--vt-dark); font-family: var(--vt-font); font-size: 16px; font-weight: 600; box-shadow: var(--vt-sh-y); transition: transform .15s var(--vt-ease), box-shadow .15s var(--vt-ease); }
.vt-reg-form div.wpforms-container button.wpforms-submit[type]:hover,
.vt-reg-form div.wpforms-container button.wpforms-submit[type]:focus-visible { background: var(--vt-yellow); color: var(--vt-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(252, 185, 19, .38); }
.vt-blog-reg .vt-reg-form .wpforms-confirmation-container-full { margin: 0; padding: 32px 8px; border: 0; border-radius: var(--vt-r-input); background: #fff; text-align: center; color: var(--vt-text-2); font-family: var(--vt-font); font-size: 15px; line-height: 1.6; }
.vt-blog-reg .vt-reg-form .wpforms-confirmation-container-full::before {
	content: ""; display: block; width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 50%;
	background: var(--vt-yellow) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2324243A' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 30px 30px no-repeat;
}
.vt-blog-reg .vt-reg-form .wpforms-confirmation-container-full p { margin: 0 0 10px; color: var(--vt-text-2); }
.vt-blog-reg .vt-reg-form .wpforms-confirmation-container-full p:first-child { font-size: 20px; font-weight: 600; line-height: 1.4; color: var(--vt-dark); }
.vt-blog-reg .vt-reg-form .wpforms-confirmation-container-full p:last-child { margin-bottom: 0; }
.vt-related { margin-top: 0; }

/* ---------- Trang bài viết ---------- */
.vt-article-head { padding: 36px 0 8px; }
.vt-article-head h1 { max-width: 880px; margin: 12px 0 14px; font-family: var(--vt-font); font-size: clamp(28px, 3.6vw, 42px); font-weight: 700; line-height: 1.25; color: var(--vt-dark); }
.vt-article-cover { max-width: 1040px; margin: 22px auto 0; overflow: hidden; border-radius: var(--vt-r-lg); aspect-ratio: 40 / 21; background: var(--vt-gray); }
.vt-article-cover img { display: block; width: 100%; height: 100%; object-fit: cover; }
.vt-article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 56px; align-items: start; margin-top: 40px; }

.vt-toc { position: sticky; top: 96px; order: 2; padding: 18px 20px; border: 1px solid var(--vt-border); border-radius: var(--vt-r-card); font-size: 14.5px; }
.admin-bar .vt-toc { top: 128px; }
.vt-toc summary { display: none; }
.vt-toc-title { margin: 0 0 10px !important; font-size: 12.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--vt-text-2); }
.vt-toc ol { margin: 0; padding-left: 18px; }
.vt-toc li { margin: 0 0 8px; line-height: 1.45; }
.vt-toc a { color: var(--vt-dark); text-decoration: none; }
.vt-toc a:hover, .vt-toc a.on { box-shadow: inset 0 -2px 0 var(--vt-yellow); }
.vt-toc a.on { font-weight: 600; }

.vt-prose { order: 1; max-width: 720px; font-size: 18px; line-height: 1.75; color: var(--vt-text); }
.vt-prose h2 { margin: 44px 0 14px; font-family: var(--vt-font); font-size: clamp(23px, 2.4vw, 28px); font-weight: 700; line-height: 1.3; color: var(--vt-dark); scroll-margin-top: 96px; }
.admin-bar .vt-prose h2 { scroll-margin-top: 128px; }
.vt-prose h3 { margin: 30px 0 10px; font-family: var(--vt-font); font-size: 20px; font-weight: 700; line-height: 1.4; color: var(--vt-dark); }
.vt-prose p { margin: 0 0 18px; }
.vt-prose ul, .vt-prose ol { margin: 0 0 20px; }
.vt-prose ul { padding-left: 4px; }
.vt-prose ul > li { position: relative; margin: 0 0 8px; padding-left: 24px; list-style: none; }
.vt-prose ul > li::before { content: ""; position: absolute; left: 4px; top: .68em; width: 8px; height: 8px; border-radius: 50%; background: var(--vt-yellow); }
.vt-prose ol { padding-left: 22px; }
.vt-prose li p { margin: 0; }
.vt-prose img { display: block; max-width: 100%; height: auto; margin: 26px 0; border: 1px solid var(--vt-border); border-radius: 12px; }
.vt-prose a { color: var(--vt-dark); text-decoration: underline; text-decoration-color: var(--vt-yellow); text-underline-offset: 3px; }
.vt-prose strong { color: var(--vt-dark); }
.vt-prose table { width: 100%; margin: 0 0 24px; border-collapse: collapse; font-size: 16px; }
.vt-prose th, .vt-prose td { padding: 10px 12px; border: 1px solid var(--vt-border); text-align: left; }
.vt-prose th { background: var(--vt-gray); }
.vt-prose blockquote { margin: 0 0 20px; padding: 14px 20px; border-left: 4px solid var(--vt-yellow); background: var(--vt-gray); border-radius: 0 12px 12px 0; }

.vt-cta-inline { position: relative; overflow: hidden; margin: 36px 0; padding: 26px 28px; border-radius: var(--vt-r-card); background: var(--vt-dark); color: #fff; }
.vt-prose .vt-cta-inline p { margin: 0 0 16px; font-size: 16px; color: rgba(255, 255, 255, .72); }
.vt-prose .vt-cta-inline .vt-cta-inline-title { margin: 0 0 6px; font-size: 21px; font-weight: 700; line-height: 1.35; color: #fff; }
.vt-prose .vt-cta-inline a { text-decoration: none; color: var(--vt-dark); }

.vt-share { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--vt-border); font-size: 14.5px; color: var(--vt-text-2); }
.vt-share a, .vt-share button { display: inline-flex; align-items: center; height: 36px; padding: 0 14px; border: 1px solid var(--vt-border); border-radius: 999px; background: #fff; font-family: var(--vt-font); font-size: 14.5px; font-weight: 500; color: var(--vt-dark); text-decoration: none; cursor: pointer; }
.vt-share a:hover, .vt-share button:hover { border-color: var(--vt-dark); color: var(--vt-dark); }

.vt-related { margin-top: 56px; padding: 52px 0; background: var(--vt-gray); }
.vt-related h2 { margin: 0 0 24px; font-family: var(--vt-font); font-size: clamp(22px, 2.4vw, 28px); color: var(--vt-dark); }
.vt-related + .site-footer, .vt-related ~ .vt-blog-cta { margin-top: 0; }

/* ---------- Tablet ---------- */
@media (max-width: 1024px) {
	.vt-post-feature { grid-template-columns: 1fr; gap: 22px; }
	.vt-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
	.vt-article-layout { grid-template-columns: 1fr; gap: 0; }
	.vt-toc { position: static; order: 0; margin: 0 0 28px; }
	.vt-toc summary { display: block; font-weight: 600; color: var(--vt-dark); cursor: pointer; }
	.vt-toc details[open] summary { margin-bottom: 10px; }
	.vt-toc-title { display: none; }
	.vt-cta-card { flex-direction: column; align-items: flex-start; }
	.vt-reg-card { grid-template-columns: 1fr; gap: 28px; padding: 36px; }
}

/* ---------- Điện thoại ---------- */
@media (max-width: 767px) {
	.vt-grid, .vt-grid--duo { grid-template-columns: 1fr; }
	.vt-grid--duo .vt-card .vt-card-body { padding: 18px 20px 20px; }
	.vt-blog-reg { padding: 40px 0 48px; }
	.vt-reg-card { margin: 0 -4px; padding: 26px 16px; border-radius: 20px; }
	.vt-reg-form-card { padding: 20px 16px; }
	.vt-reg-checks { margin: 16px 0; }
	.vt-reg-quick a { flex: 1; justify-content: center; }
	.vt-reg-form .wpforms-container .wpforms-field-container { grid-template-columns: 1fr; }
	.vt-reg-form .wpforms-container .wpforms-field input[type] { height: 48px; }
	.vt-blog-hero { padding: 32px 0 28px; }
	.vt-tabs { flex-wrap: nowrap; overflow-x: auto; margin-right: calc(-1 * var(--vt-gutter)); padding-right: var(--vt-gutter); }
	.vt-tab { flex: none; }
	.vt-article-cover { margin-left: 0; margin-right: 0; border-radius: 0; }
	.vt-prose { font-size: 17px; }
	.vt-cta-card { padding: 26px 18px; }
	.vt-cta-acts .vt-btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
	.vt-thumb img, .vt-card, .vt-blog .vt-btn { transition: none; }
}