/*
Theme Name: UEHenter
Theme URI: https://uehenter.ddev.site
Author: UEHenter
Description: Vietnamese editorial news portal theme for UEHenter Club.
Version: 0.2.8
Requires at least: 6.9
Requires PHP: 7.2.24
Text Domain: uehenter
*/

/* ============================================================
   DESIGN TOKENS
   ============================================================ */

:root {
  /* Color */
  --color-bg: #FFFFFF;
  --color-surface: #F5F5F5;
  --color-border: rgba(0, 0, 0, 0.10);
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #717171;
  --color-text-muted: #4A4A4A;
  --color-accent: #C41E3A;
  --color-accent-hover: #A01729;

  /* Typography */
  --font-base: 'Unbounded', sans-serif;
  --text-display: clamp(28px, 5vw, 52px);
  --text-heading: clamp(20px, 3vw, 28px);
  --text-card: clamp(14px, 1.8vw, 18px);
  --text-body: 14px;
  --text-meta: 10px;
  --text-nav: 11px;

  --leading-display: 1.15;
  --leading-heading: 1.15;
  --leading-card: 1.25;
  --leading-body: 1.7;
  --leading-meta: 1.5;
  --leading-nav: 1;

  --tracking-tight: -0.01em;
  --tracking-default: 0em;
  --tracking-wide: 0.04em;

  /* Spacing (8px base) */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* Layout */
  --container-max: 1280px;
  --col-gap-mobile: 24px;
  --col-gap-desktop: 32px;
  --hero-media-ratio: 2048 / 1365;

  /* Animation */
  --duration-instant: 100ms;
  --duration-fast: 180ms;
  --duration-chrome: 200ms;
  --duration-modal: 250ms;
  --duration-base: 300ms;
  --duration-clip: 350ms;
  --duration-slow: 500ms;
  --duration-enter: 300ms;

  --ease-out: cubic-bezier(0.0, 0.0, 0.2, 1);
  --ease-out-premium: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out-corporate: cubic-bezier(0.2, 0, 0, 1);
  --ease-in-exit: cubic-bezier(0.4, 0, 1, 1);
  --ease-in-out: cubic-bezier(0.4, 0.0, 0.2, 1);
  --ease-linear: linear;

  --z-nav: 100;

  /* Shape */
  --radius-sm: 2px;
  --radius-md: 8px;
}

/* ============================================================
   FONT FACES
   ============================================================ */

@font-face {
  font-family: 'Unbounded';
  src: url('assets/fonts/Unbounded-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Unbounded';
  src: url('assets/fonts/Unbounded-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Unbounded';
  src: url('assets/fonts/Unbounded-ExtraBold.ttf') format('truetype');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Unbounded';
  src: url('assets/fonts/Unbounded-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Unbounded';
  src: url('assets/fonts/Unbounded-Black.ttf') format('truetype');
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

/* ============================================================
   RESET & BASE
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-text-primary);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */

.screen-reader-text,
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  position: fixed;
  top: var(--space-md);
  left: var(--space-md);
  z-index: 999;
  width: auto;
  height: auto;
  padding: var(--space-sm) var(--space-md);
  clip: auto;
  background: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

/* ============================================================
   LAYOUT
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-xl);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-inline: 80px;
  }
}

/* ============================================================
   NAVIGATION
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--duration-fast) var(--ease-in-out);
  --text-nav: 13px;
}

.site-header.is-scrolled {
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
  gap: var(--space-2xl);
}

.site-branding {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.site-branding__logo {
  height: 28px;
  width: auto;
  object-fit: contain;
}

.site-branding__text {
  font-size: 18px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--col-gap-desktop);
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: var(--col-gap-desktop);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  height: 48px;
  font-size: var(--text-nav);
  font-weight: 400;
  line-height: var(--leading-nav);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-primary);
  transition: color var(--duration-fast) var(--ease-in-out);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-accent);
}

.nav-search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--color-text-primary);
  transition: color var(--duration-fast) var(--ease-in-out);
  flex-shrink: 0;
}

.nav-search-btn:hover {
  color: var(--color-accent);
}

/* Mobile nav */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--duration-base) var(--ease-in-out), opacity var(--duration-fast) var(--ease-in-out);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  opacity: 0;
  transform: translateY(-24px);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  transform-origin: top center;
}

.mobile-nav.is-open {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav ul {
  padding: var(--space-sm) 0;
}

.mobile-nav a {
  display: flex;
  align-items: center;
  height: 48px;
  padding: 0 var(--space-lg);
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-surface);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--color-accent);
}

@media (max-width: 767px) {
  .primary-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-header__inner {
    gap: var(--space-md);
  }
}

/* ============================================================
   SUBNAV + BREADCRUMB
   ============================================================ */

.category-tabs {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.category-tabs__bar {
  display: flex;
  gap: 0;
  overflow-x: auto;
}

.category-tabs__link {
  display: inline-flex;
  align-items: center;
  height: 44px;
  padding: 0 var(--space-md);
  border-bottom: 2px solid transparent;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  white-space: nowrap;
  transition:
    color var(--duration-fast) var(--ease-in-out),
    border-color var(--duration-fast) var(--ease-in-out);
}

.category-tabs__link:hover,
.category-tabs__link.is-active {
  color: var(--color-accent);
}

.category-tabs__link.is-active {
  border-bottom-color: var(--color-accent);
}

.breadcrumb-wrap {
  padding-top: var(--space-lg);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  overflow-x: auto;
  font-size: 12px;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.breadcrumb__link {
  color: inherit;
  transition: color var(--duration-fast) var(--ease-in-out);
}

.breadcrumb__link:hover {
  color: var(--color-accent);
}

.breadcrumb__current {
  color: var(--color-text-primary);
}

.breadcrumb__sep {
  color: var(--color-text-secondary);
}

/* ============================================================
   CATEGORY LABEL
   ============================================================ */

.cat-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-sm);
}

.cat-label__link {
  color: inherit;
}

/* ============================================================
   SECTION HEADER
   ============================================================ */

.section-header {
  margin-bottom: var(--space-lg);
}

.section-header__top {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  padding-bottom: var(--space-md);
}

.section-header__top::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--color-border);
  clip-path: inset(0 100% 0 0);
}

.section-header.is-visible .section-header__top::after {
  clip-path: inset(0 0 0 0);
}

.section-title {
  font-size: var(--text-heading);
  font-weight: 700;
  line-height: var(--leading-heading);
  color: var(--color-text-primary);
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-md);
}

.link-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
  transition: color var(--duration-fast) var(--ease-in-out);
}

.link-cta:hover {
  color: var(--color-accent-hover);
}

/* ============================================================
   HERO BANNER — Section 1 (Đã tinh chỉnh theo thiết kế)
   ============================================================ */

.hero {
  position: relative;
  /* Tạo điểm neo cho ảnh nền toàn khu vực */
  display: grid;
  grid-template-columns: minmax(0, 55%) minmax(0, 45%);
  width: min(calc(100% - 48px), 1280px);
  height: clamp(500px, 35vw, 550px);
  margin: var(--space-lg) auto var(--space-2xl);
  --hero-card-image-width: clamp(130px, 11vw, 175px);
  background: #ffffff;
  border-radius: 20px;
  /* Bo góc mềm mại toàn bộ container */
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.05);
}

/* Ảnh nền phủ toàn bộ khối Hero */
.hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  z-index: 0;
}

/* Lớp phủ chuyển màu mượt giúp làm nổi bật chữ phía bên trái */
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.7) 30%, rgba(255, 255, 255, 0.1) 50%);
  z-index: 1;
}

.hero__left {
  position: relative;
  z-index: 2;
  height: 100%;
}

.hero__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  max-width: 540px;
  padding: clamp(30px, 5vw, 60px);
}

.hero__cat {
  display: inline-block;
  font-size: clamp(14px, 1.2vw, 16px);
  font-weight: 700;
  text-transform: uppercase;
  color: #222222;
  /* Màu chữ tối sang trọng như ảnh */
  margin-bottom: 16px;
}

.hero__headline {
  font-size: clamp(28px, 2.8vw, 42px);
  font-weight: 800;
  line-height: 1.2;
  color: #a51c24;
  /* Màu đỏ đô thương hiệu UEH */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 3;
  overflow: hidden;
  margin-bottom: 24px;
}

/* Ẩn đoạn trích mô tả lớn ở phía bên trái giống như thiết kế gốc */
.hero__excerpt {
  display: none !important;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  background: #a51c24;
  /* Nút đỏ nguyên khối */
  border-radius: 50px;
  /* Bo tròn dạng viên thuốc */
  width: fit-content;
  text-decoration: none;
  transition: all 0.3s ease;
}

.hero__cta:hover {
  background: #801218;
  transform: translateY(-2px);
}

/* BẢNG TIN PHÍA BÊN PHẢI */
.hero__right {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  /* Căn lề các thẻ sát lề phải */
  gap: 20px;
  padding: clamp(20px, 3vw, 40px);
  height: 100%;
}

/* Định dạng thẻ Glassmorphism trong suốt xuyên thấu nền */
.this-week__card {
  overflow: hidden;
  background: rgba(255, 255, 255, 0.75);
  /* Màu nền trắng trong suốt */
  backdrop-filter: blur(15px);
  /* Kỹ thuật làm mờ kính cường lực */
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.this-week__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.85);
}

/* Cả 2 thẻ cùng kích thước */
.this-week__card--feature {
  width: min(100%, 450px);
}

.this-week__card:not(.this-week__card--feature) {
  width: min(100%, 450px);
}

.this-week__card--mobile-hero {
  display: none;
}

.this-week__link {
  display: grid;
  grid-template-columns: var(--hero-card-image-width) 1fr;
  color: #222222;
  text-decoration: none;
  height: 100%;
}

.this-week__img-wrap {
  width: var(--hero-card-image-width);
  height: 100%;
  min-height: 140px;
  overflow: hidden;
}

.this-week__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.this-week__body {
  display: flex;
  flex-direction: column;
  padding: 16px;
  min-width: 0;
}

.this-week__date {
  font-size: 12px;
  font-weight: 500;
  color: #666666;
  margin-bottom: 6px;
}

.this-week__title {
  font-size: clamp(14px, 1.1vw, 16px);
  font-weight: 700;
  line-height: 1.3;
  color: #111111;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 3;
  overflow: hidden;
  margin-bottom: 6px;
}

.this-week__excerpt {
  font-size: 13px;
  line-height: 1.4;
  color: #444444;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 2;
  overflow: hidden;
}

.this-week__readmore {
  font-size: 13px;
  font-weight: 600;
  color: #a51c24;
  margin-top: auto;
  padding-top: 8px;
}

/* Hero responsive */
@media (max-width: 767px) {
  .hero {
    grid-template-columns: 1fr;
    width: 100%;
    height: auto;
    margin: var(--space-lg) 0 var(--space-2xl);
    border-radius: 0;
  }

  .hero__left {
    display: none;
  }

  .hero__right {
    display: grid;
    gap: var(--space-md);
    padding: var(--space-lg);
    align-items: start;
  }

  .this-week__card,
  .this-week__card--feature,
  .this-week__card:not(.this-week__card--feature) {
    width: 100%;
    position: relative;
  }

  .this-week__card--mobile-hero {
    display: block;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .hero {
    grid-template-columns: minmax(0, 52%) minmax(0, 48%);
    height: clamp(400px, 38vw, 480px);
  }

  .hero__content {
    padding: var(--space-xl);
  }

  .hero__headline {
    font-size: clamp(26px, 3vw, 36px);
  }

  .hero__right {
    gap: 16px;
  }

  .this-week__card--feature {
    width: min(100%, 400px);
  }

  .this-week__card:not(.this-week__card--feature) {
    width: min(100%, 400px);
  }
}

/* ============================================================
   SECTION A — List + Featured (Style A)
   ============================================================ */

.section-a {
  padding-block: var(--space-xl);
  background: var(--color-bg);
}

.section-a__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--col-gap-desktop);
  align-items: center;
  margin-top: var(--space-lg);
}

/* List zone */
.list-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
}

.list-card:first-child {
  padding-top: 0;
  border-top: none;
}

.list-card__bottom {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr);
  gap: var(--space-md);
  align-items: start;
}

.list-card__img-wrap {
  overflow: hidden;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  display: block;
}

.list-card__img-wrap img {
  width: 116px;
  height: 88px;
  object-fit: cover;
  display: block;
  transition: transform var(--duration-base) var(--ease-out);
}

.list-card:hover .list-card__img-wrap img {
  transform: scale(1.05);
}

.list-card__body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-xs);
  min-height: 88px;
}

.list-card__title {
  font-size: 14px;
  font-weight: 600;
  line-height: var(--leading-card);
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 2;
  overflow: hidden;
  transition: color var(--duration-fast) var(--ease-in-out);
}

.list-card:hover .list-card__title {
  color: var(--color-accent);
}

.list-card__excerpt {
  font-size: 12px;
  font-weight: 400;
  line-height: var(--leading-body);
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 3;
  overflow: hidden;
  flex: 1;
}

.list-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: 2px;
}

.list-card__date {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-secondary);
}

.list-card__views {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  font-weight: 400;
  color: var(--color-text-secondary);
}

.list-card__views svg {
  opacity: 0.6;
  flex-shrink: 0;
}

/* Featured card (right of section A) */
.featured-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.featured-card__img-wrap {
  overflow: hidden;
}

.featured-card__img-wrap img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.featured-card__overlay {
  position: relative;
}

.featured-card__overlay::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75) 0%, rgba(0, 0, 0, 0) 100%);
  pointer-events: none;
}

.featured-card__body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
}

.featured-card__meta {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  color: rgba(255, 255, 255, 0.75);
}

.featured-card__title {
  margin-top: var(--space-xs);
  font-size: clamp(18px, 2.2vw, 26px);
  font-weight: 600;
  line-height: var(--leading-card);
  color: #ffffff;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 3;
  overflow: hidden;
  padding-bottom: 2px;
}

.featured-card__excerpt {
  margin-top: var(--space-sm);
  font-size: 14px;
  font-weight: 400;
  line-height: var(--leading-body);
  color: rgba(255, 255, 255, 0.80);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 2;
  overflow: hidden;
}

@media (max-width: 767px) {
  .section-a__grid {
    grid-template-columns: 1fr;
  }

  .section-a__grid .featured-card {
    order: -1;
  }
}

/* ============================================================
   SECTION B — Description + 2 Overlay Cards (Style B)
   ============================================================ */

.section-b {
  padding-block: var(--space-xl);
  background: var(--color-bg);
}

.section-b__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) 1px minmax(0, 7fr);
  gap: var(--col-gap-desktop);
  align-items: center;
  margin-top: var(--space-lg);
}

.section-b__divider {
  align-self: stretch;
  background: var(--color-border);
}

.section-b__desc {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.section-b__cat-name {
  margin-top: var(--space-sm);
  font-size: var(--text-heading);
  font-weight: 700;
  line-height: var(--leading-heading);
  color: var(--color-text-primary);
}

.section-b__text {
  margin-top: var(--space-md);
  font-size: 16px;
  font-weight: 400;
  line-height: var(--leading-body);
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 5;
  overflow: hidden;
}

.section-b__viewall {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  transition: color var(--duration-fast) var(--ease-in-out);
}

.section-b__viewall:hover {
  color: var(--color-accent-hover);
}

.section-b__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.overlay-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  border-radius: var(--radius-md);
}

.overlay-card a {
  display: block;
  width: 100%;
  height: 100%;
}

.overlay-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.overlay-card__gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.4) 40%, rgba(0, 0, 0, 0) 100%);
  pointer-events: none;
}

.overlay-card__body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
  pointer-events: none;
}

.overlay-card__meta {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  color: rgba(255, 255, 255, 0.95);
}

.overlay-card__title {
  margin-top: var(--space-xs);
  font-size: 14px;
  font-weight: 600;
  line-height: var(--leading-card);
  color: #ffffff;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 2;
  overflow: hidden;
  padding-bottom: 2px;
}

@media (max-width: 767px) {
  .section-b__grid {
    grid-template-columns: 1fr;
  }

  .section-b__divider {
    display: none;
  }

  .section-b__cards {
    grid-template-columns: 1fr;
  }

  .overlay-card {
    aspect-ratio: 16/9;
  }
}

/* ============================================================
   SECTION C — 3-Column Grid (Style C)
   ============================================================ */

.section-c {
  padding-block: var(--space-xl);
  background: var(--color-bg);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--col-gap-desktop);
  margin-top: var(--space-lg);
}

.grid-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.grid-card__img-wrap {
  overflow: hidden;
}

.grid-card__img-wrap img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
}

.grid-card__body {
  padding: var(--space-md);
}

.grid-card__date {
  display: block;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  color: var(--color-accent);
}

.grid-card__cat {
  margin-bottom: var(--space-xs);
  font-size: 11px;
}

.grid-card__title {
  margin-top: var(--space-sm);
  font-size: var(--text-card);
  font-weight: 600;
  line-height: var(--leading-card);
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 3;
  overflow: hidden;
  padding-bottom: 2px;
  transition: color var(--duration-fast) var(--ease-in-out);
}

.grid-card:hover .grid-card__title {
  color: var(--color-accent);
}

.grid-card__excerpt {
  margin-top: var(--space-sm);
  font-size: 14px;
  font-weight: 400;
  line-height: var(--leading-body);
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 2;
  overflow: hidden;
}

@media (max-width: 767px) {
  .card-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================================
   SECTION D — Xem Nhiều Nhất (Most Viewed)
   ============================================================ */

.section-most-viewed {
  padding-block: var(--space-xl);
  background: var(--color-surface);
}

/* Tabs: Tuần / Tháng / Năm */
.most-viewed__tabs {
  display: flex;
  gap: 0;
  background: var(--color-surface-2, #f3f4f6);
  border-radius: var(--radius-sm);
  padding: 3px;
  flex-shrink: 0;
}

.most-viewed__tab {
  padding: 6px 18px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-secondary);
  background: transparent;
  border-radius: calc(var(--radius-sm) - 1px);
  cursor: pointer;
  transition:
    color var(--duration-fast) var(--ease-in-out),
    background var(--duration-fast) var(--ease-in-out),
    box-shadow var(--duration-fast) var(--ease-in-out);
}

.most-viewed__tab:hover {
  color: var(--color-accent);
}

.most-viewed__tab.is-active {
  background: var(--color-accent);
  color: #ffffff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.18);
}

/* Two-column layout: featured 42% / list 58% */
.most-viewed__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--col-gap-desktop);
  margin-top: var(--space-lg);
  align-items: start;
}

/* Shared meta row (cat + date) */
.mv-cat {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  border-left: 2px solid var(--color-accent);
  padding-left: 7px;
  line-height: 1;
}

.mv-date {
  font-size: 11px;
  font-weight: 400;
  color: var(--color-text-secondary);
}

/* Shared views row */
.mv-views {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-secondary);
}

.mv-views svg {
  flex-shrink: 0;
  opacity: 0.65;
}

/* ── Featured card (rank 1) ── */

.mv-featured {
  background: var(--color-bg);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.05);
  transition: box-shadow var(--duration-fast) var(--ease-in-out);
}

.mv-featured:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1), 0 8px 28px rgba(0, 0, 0, 0.08);
}

.mv-featured__link {
  display: flex;
  flex-direction: column;
  color: inherit;
}

.mv-featured__img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.mv-featured__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.mv-featured__img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.28) 100%);
  pointer-events: none;
}


/* Corner ribbon badge (TOP 1 / TOP 2 / TOP 3) */
.mv-ribbon {
  position: absolute;
  z-index: 2;
  display: block;
  width: 8em;
  height: 1.4em;
  line-height: 1.4em;
  text-align: center;
  user-select: none;
  top: 0;
  left: 0;
  transform: translate(-2.35em, 1em) rotate(-45deg);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #ffffff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.mv-ribbon--gold {
  background: #C8941A;
}

.mv-ribbon--silver {
  background: #7A95A8;
}

.mv-ribbon--bronze {
  background: #9E6B3F;
}

/* Simple number badge for ranks 4+ */
.mv-num-badge {
  position: absolute;
  top: 6px;
  left: 6px;
  z-index: 2;
  min-width: 22px;
  height: 22px;
  padding: 0 5px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.5);
  color: #ffffff;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  letter-spacing: 0.04em;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.mv-featured__body {
  padding: var(--space-lg);
}

.mv-featured__footer {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.mv-featured__title {
  font-size: clamp(17px, 1.7vw, 22px);
  font-weight: 700;
  line-height: 1.38;
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 3;
  overflow: hidden;
  transition: color var(--duration-fast) var(--ease-in-out);
}

.mv-featured:hover .mv-featured__title {
  color: var(--color-accent);
}

.mv-featured__excerpt {
  margin-top: var(--space-sm);
  font-size: 13.5px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 3;
  overflow: hidden;
}

.mv-featured:hover .mv-featured__cta {
  gap: 10px;
}

.mv-featured__cta svg {
  transition: transform var(--duration-fast) var(--ease-in-out);
}

.mv-featured:hover .mv-featured__cta svg {
  transform: translateX(3px);
}

/* ── List items (ranks 2–5) — individual cards ── */

.mv-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mv-item {
  background: var(--color-bg);
  border-radius: 10px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  padding: 10px var(--space-md);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  transition:
    box-shadow var(--duration-fast) var(--ease-in-out),
    transform var(--duration-fast) var(--ease-in-out);
}

.mv-item:hover {
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.09);
  transform: translateY(-1px);
}

.mv-item__link {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: var(--space-sm);
  align-items: center;
  color: inherit;
}

.mv-item__img-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 6px;
  aspect-ratio: 4 / 3;
  width: 140px;
}

/* Scale ribbon down proportionally for small thumbnails */
.mv-item__img-wrap .mv-ribbon {
  font-size: 9px;
}

.mv-item__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.mv-item__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.mv-item__footer {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: 2px;
}

.mv-item .mv-cat {
  border-left: none;
  padding-left: 0;
}

.mv-item__title {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
  transition: color var(--duration-fast) var(--ease-in-out);
}

.mv-item__link .mv-item__title {
  color: var(--color-text-primary);
}

.mv-item:hover .mv-item__link .mv-item__title {
  color: var(--color-accent);
}

.mv-item__excerpt {
  font-size: 12px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 2;
  overflow: hidden;
}

/* Responsive */
@media (max-width: 767px) {
  .most-viewed__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .mv-featured__title {
    font-size: 16px;
  }

  .mv-featured__excerpt {
    -webkit-line-clamp: 2;
    line-clamp: 2;
  }

  .mv-item__link {
    grid-template-columns: 88px minmax(0, 1fr);
  }

  .mv-item__img-wrap {
    width: 88px;
    aspect-ratio: 4 / 3;
  }

  .mv-item__excerpt {
    display: none;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .most-viewed__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .mv-featured__img-wrap {
    aspect-ratio: 16 / 7;
  }

  .mv-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .mv-item__link {
    grid-template-columns: 96px minmax(0, 1fr);
  }

  .mv-item__img-wrap {
    width: 96px;
  }
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-2xl);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--col-gap-desktop);
  padding-bottom: var(--space-2xl);
}

.footer-col__logo {
  height: 24px;
  width: auto;
  object-fit: contain;
  margin-bottom: var(--space-md);
}

.footer-col__about {
  font-size: 14px;
  font-weight: 400;
  line-height: var(--leading-body);
  color: var(--color-text-secondary);
}

.footer-col__heading {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.footer-col__links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col__links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-primary);
  transition: color var(--duration-fast) var(--ease-in-out);
}

.footer-col__links a:hover {
  color: var(--color-accent);
}

.site-footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-lg);
  text-align: center;
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-secondary);
}

@media (max-width: 767px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

  .footer-col:first-child {
    grid-column: span 2;
  }
}

/* ============================================================
   CATEGORY PAGE
   ============================================================ */

.category-header {
  padding-block: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.category-header__name {
  font-size: var(--text-heading);
  font-weight: 700;
  line-height: var(--leading-heading);
  color: var(--color-text-primary);
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-md);
}

.category-header__desc {
  margin-top: var(--space-sm);
  margin-left: 19px;
  font-size: 16px;
  font-weight: 400;
  line-height: var(--leading-body);
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 2;
  overflow: hidden;
}

.category-featured {
  padding-block: var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
}

.category-featured__inner {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--col-gap-desktop);
  align-items: center;
}

.category-featured__img-wrap {
  overflow: hidden;
  border-radius: var(--radius-md);
}

.category-featured__img-wrap img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.category-featured__body {
  padding-left: var(--space-xl);
}

.category-featured__title {
  margin-top: var(--space-sm);
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 700;
  line-height: var(--leading-heading);
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 3;
  overflow: hidden;
  padding-bottom: 2px;
  transition: color var(--duration-fast) var(--ease-in-out);
}

.category-featured:hover .category-featured__title {
  color: var(--color-accent);
}

.category-featured__excerpt {
  margin-top: var(--space-md);
  font-size: 16px;
  font-weight: 400;
  line-height: var(--leading-body);
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  --line-clamp: 3;
  overflow: hidden;
}

.category-featured__meta {
  margin-top: var(--space-md);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-secondary);
}

@media (max-width: 767px) {
  .category-featured__inner {
    grid-template-columns: 1fr;
  }

  .category-featured__body {
    padding-left: 0;
    padding-top: var(--space-md);
  }
}

/* Category article grid */
.category-grid-section {
  padding-block: var(--space-2xl);
  background: var(--color-surface);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
}

.pagination__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) var(--ease-in-out);
}

.pagination__item:hover {
  color: var(--color-accent);
}

.pagination__item.active {
  font-weight: 600;
  color: var(--color-accent);
}

/* ============================================================
   ARTICLE / SINGLE PAGE
   ============================================================ */

.article-header {
  max-width: 700px;
  margin-inline: auto;
  padding-block: var(--space-lg) var(--space-md);
  padding-inline: var(--space-lg);
}

.article-header__headline {
  margin-top: var(--space-sm);
  font-size: clamp(22px, 3.5vw, 36px);
  font-weight: 800;
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  padding-bottom: 4px;
}

.article-header__meta {
  margin-top: var(--space-sm);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-secondary);
}

.article-hero-img {
  width: 100%;
  max-width: 840px;
  margin-inline: auto;
  margin-block: var(--space-md);
  padding-inline: var(--space-lg);
}

.article-hero-img img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.article-hero-img__caption {
  margin-top: var(--space-sm);
  padding-inline: var(--space-lg);
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-secondary);
}

@media (min-width: 768px) {
  .article-hero-img__caption {
    padding-inline: var(--space-xl);
  }
}

@media (min-width: 1024px) {
  .article-hero-img__caption {
    padding-inline: 80px;
  }
}

.article-body {
  max-width: 640px;
  margin-inline: auto;
  font-size: 15px;
  font-weight: 400;
  line-height: var(--leading-body);
  color: var(--color-text-primary);
  padding-inline: var(--space-lg);
}

.article-body p+p {
  margin-top: 1.2em;
}

.article-body h2 {
  margin-top: 2em;
  margin-bottom: 0.5em;
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 700;
  line-height: 1.2;
}

.article-body h3 {
  margin-top: 1.6em;
  margin-bottom: 0.4em;
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 600;
  line-height: 1.3;
}

.article-body a {
  color: var(--color-accent);
  text-decoration: none;
  text-decoration-color: transparent;
  transition: text-decoration-color var(--duration-fast) var(--ease-linear);
}

.article-body a:hover {
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
}

.article-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-lg);
  font-weight: 700;
  font-size: clamp(16px, 2.2vw, 22px);
  line-height: 1.2;
  letter-spacing: var(--tracking-tight);
  margin-block: 1.6em;
  color: var(--color-text-primary);
}

/* Tags */
.article-tags {
  max-width: 640px;
  margin-inline: auto;
  margin-top: var(--space-lg);
  padding-inline: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-secondary);
  transition:
    border-color var(--duration-fast) var(--ease-in-out),
    color var(--duration-fast) var(--ease-in-out);
}

.tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Related posts */
.related-posts {
  padding-block: var(--space-2xl) var(--space-xl);
}

/* ============================================================
   ENTRANCE PATTERNS
   ============================================================ */

.enter-slide-premium {
  opacity: 1;
  transform: translateY(0);
}

.enter-slide-corporate {
  opacity: 1;
  transform: translateY(0);
}

.enter-scale-modal {
  opacity: 1;
  transform: scale(1);
  transform-origin: center;
}

.reveal-clip {
  clip-path: inset(0 0 0 0);
}

.reveal {
  opacity: 1;
  transform: translateY(0);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.card-grid .grid-card,
.card-grid .overlay-card {
  opacity: 1;
  transform: translateY(0);
}

.card-grid.is-visible .grid-card,
.card-grid.is-visible .overlay-card {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}