/*
Theme Name: NPDuyLab
Theme URI: https://npduylab.com
Author: Nguyễn Phúc Duy
Author URI: https://npduylab.com
Description: Theme cá nhân NPDuyLab – Portfolio & Blog y tế / dinh dưỡng. Thiết kế tối giản kiểu Apple, tối ưu thiết bị di động.
Version: 1.1.3
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: npduylab
Tags: portfolio, blog, mobile-first, minimalist, vietnamese
*/

/* ============================================================
   CSS VARIABLES
   ============================================================ */
:root {
  /* Brand Colors */
  --color-primary:       #0071E3;
  --color-primary-dark:  #0051A8;
  --color-primary-light: #E8F2FD;
  --color-accent:        #00C7BE;
  --color-surface:       #FFFFFF;
  --color-surface-2:     #F5F5F7;
  --color-surface-3:     #E8E8ED;
  --color-text-1:        #1D1D1F;
  --color-text-2:        #6E6E73;
  --color-text-3:        #AEAEB2;
  --color-border:        #D2D2D7;
  --color-success:       #30D158;
  --color-warning:       #FF9F0A;

  /* Typography */
  --font-display:  'Be Vietnam Pro', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:     'Be Vietnam Pro', 'SF Pro Text', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:     'JetBrains Mono', 'SF Mono', monospace;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Layout */
  --container-max: 1200px;
  --container-text: 720px;
  --nav-height: 56px;
  --bottom-nav-height: 68px;
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
  --border-radius-xl: 28px;
  --border-radius-full: 999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.04);
  --shadow-lg:  0 12px 40px rgba(0,0,0,.10), 0 4px 12px rgba(0,0,0,.05);
  --shadow-blue: 0 8px 24px rgba(0,113,227,.20);

  /* Transitions */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: 150ms var(--ease-smooth);
  --transition-base: 280ms var(--ease-smooth);
  --transition-slow: 400ms var(--ease-smooth);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-1);
  background: var(--color-surface-2);
  min-height: 100vh;
  padding-bottom: var(--bottom-nav-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.admin-bar {
  padding-top: 32px;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover { color: var(--color-primary-dark); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text-1);
}

p { color: var(--color-text-2); }

ul, ol { list-style: none; }

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: var(--font-body);
  font-size: 1rem;
}

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container--text {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

@media (min-width: 640px) {
  .container--text {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 768px) {
  .container--text {
    padding-left: var(--space-10);
    padding-right: var(--space-10);
  }
}

@media (min-width: 1024px) {
  .container--text {
    padding-left: var(--space-12);
    padding-right: var(--space-12);
  }
}

.site-main {
  min-height: calc(100vh - var(--nav-height) - var(--bottom-nav-height));
}

/* ============================================================
   PAGE CONTAINER – dùng cho page.php (1 lớp, không lồng)
   ============================================================ */
.page-container {
  width: 100%;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  /* Mobile: padding tối thiểu */
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 640px) {
  .page-container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 768px) {
  .page-container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .page-container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

/* ============================================================
   TOP NAVIGATION (Desktop)
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  height: var(--nav-height);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.site-logo__mark {
  width: 34px;
  height: 34px;
  background: var(--color-primary);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.site-logo__mark svg {
  width: 18px;
  height: 18px;
  fill: white;
}

.site-logo__text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text-1);
  letter-spacing: -0.03em;
}

.site-logo__text span {
  color: var(--color-primary);
}

.nav-desktop {
  display: none;
}

.nav-desktop ul {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
}

.nav-desktop li {
  list-style: none;
}

.nav-desktop a {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-2);
  padding: 6px 10px;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  display: block;
  letter-spacing: 0.01em;
}

.nav-desktop a:hover,
.nav-desktop a.active,
.nav-desktop .current-menu-item > a,
.nav-desktop .current_page_item > a,
.nav-desktop .current-menu-ancestor > a {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ============================================================
   DROPDOWN MENU
   ============================================================ */
.nav-desktop li {
  position: relative;
}

/* Mũi tên cho item có submenu */
.nav-desktop .menu-item-has-children > a::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: 5px;
  vertical-align: middle;
  opacity: 0.6;
  transition: transform var(--transition-fast);
}

.nav-desktop .menu-item-has-children:hover > a::after {
  transform: rotate(180deg);
}

/* Dropdown panel */
.nav-desktop .sub-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  z-index: 500;
  list-style: none;
  margin: 0;
}

/* Hiện dropdown khi hover */
.nav-desktop li:hover > .sub-menu,
.nav-desktop li:focus-within > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Link trong dropdown */
.nav-desktop .sub-menu a {
  display: block;
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-2);
  white-space: nowrap;
  border-radius: 0;
  background: none;
}

.nav-desktop .sub-menu a:hover,
.nav-desktop .sub-menu .current-menu-item > a {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ============================================================
   CUSTOM LOGO
   ============================================================ */
.site-logo .custom-logo-link {
  display: flex;
  align-items: center;
}

.site-logo .custom-logo {
  height: 36px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
}

/* ============================================================
   HERO SOCIAL BUTTONS
   ============================================================ */
.hero-social-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--color-surface-2);
  border: 1.5px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-2);
  text-decoration: none;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.hero-social-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-blue);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Search Toggle */
.btn-search {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-2);
  background: var(--color-surface-2);
  transition: all var(--transition-fast);
}

.btn-search:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* ============================================================
   BOTTOM NAVIGATION (Mobile App Style)
   ============================================================ */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-top: 1px solid rgba(0,0,0,0.07);
  height: var(--bottom-nav-height);
  padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav__inner {
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 100%;
  padding: 0 var(--space-2);
  list-style: none;
  margin: 0;
}

/* wp_nav_menu bọc trong <ul> – bỏ style ul mặc định */
.bottom-nav > ul {
  display: flex;
  justify-content: space-around;
  align-items: center;
  width: 100%;
  height: 100%;
  padding: 0 var(--space-2);
  list-style: none;
  margin: 0;
}

.bottom-nav > ul > li {
  flex: 1;
  display: flex;
  justify-content: center;
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  text-decoration: none;
  color: var(--color-text-3);
  padding: var(--space-2) var(--space-1);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  min-height: 52px;
  position: relative;
}

.bottom-nav__item svg {
  width: 22px;
  height: 22px;
  transition: transform var(--transition-base);
}

.bottom-nav__item span {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.bottom-nav__item.active {
  color: var(--color-primary);
}

.bottom-nav__item.active svg {
  transform: translateY(-1px);
}

.bottom-nav__item.active::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  background: var(--color-surface);
  padding: var(--space-12) 0 var(--space-10);
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 70vw;
  height: 70vw;
  max-width: 600px;
  max-height: 600px;
  background: radial-gradient(circle, rgba(0,113,227,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  text-align: center;
}

@media (min-width: 640px) {
  .hero__inner {
    flex-direction: row;
    align-items: flex-start;
    text-align: left;
    gap: var(--space-8);
  }
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 14px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--border-radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero__badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.7; }
}

.hero__name {
  font-size: clamp(1.9rem, 7vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-top: var(--space-2);
}

.hero__name .highlight {
  color: var(--color-primary);
  position: relative;
}

.hero__roles {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
}

@media (min-width: 640px) {
  .hero__roles { justify-content: flex-start; }
}

.hero__role-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-full);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-2);
}

.hero__role-tag svg {
  width: 14px;
  height: 14px;
  color: var(--color-primary);
}

.hero__bio {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-2);
  max-width: 480px;
}

.hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
}

@media (min-width: 640px) {
  .hero__actions { justify-content: flex-start; }
}

.hero__avatar {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 0 4px var(--color-surface), 0 0 0 7px var(--color-primary), var(--shadow-blue);
  background: var(--color-primary-light);
  flex-shrink: 0;
}

.hero__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero__avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-display);
  background: linear-gradient(135deg, var(--color-primary-light), rgba(0,199,190,.1));
}


.hero__content {
  flex: 1;
  min-width: 0;
  width: 100%;
}
/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 11px 22px;
  border-radius: var(--border-radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition-base);
  text-decoration: none;
  cursor: pointer;
  border: none;
  font-family: var(--font-body);
  letter-spacing: -0.01em;
}

.btn--primary {
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-blue);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 12px 32px rgba(0,113,227,.30);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--ghost {
  background: var(--color-surface-2);
  color: var(--color-text-1);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  background: var(--color-surface-3);
  color: var(--color-text-1);
}

.btn--sm {
  padding: 8px 16px;
  font-size: 0.82rem;
}

/* ============================================================
   STAT STRIP
   ============================================================ */
.stat-strip {
  background: var(--color-primary);
  padding: var(--space-5) 0;
}

.stat-strip__inner {
  display: flex;
  justify-content: space-around;
  gap: var(--space-4);
}

.stat-item {
  text-align: center;
  color: white;
}

.stat-item__number {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}

.stat-item__label {
  font-size: 0.72rem;
  font-weight: 500;
  opacity: 0.8;
  margin-top: 3px;
  letter-spacing: 0.02em;
}

/* ============================================================
   SECTION COMMON
   ============================================================ */
.section {
  padding: var(--space-12) 0;
}

.section--alt {
  background: var(--color-surface);
}

.section-header {
  margin-bottom: var(--space-8);
}

.section-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.section-title {
  font-size: clamp(1.4rem, 5vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.section-subtitle {
  margin-top: var(--space-2);
  font-size: 0.95rem;
  color: var(--color-text-2);
}

/* ============================================================
   EXPERTISE CARDS
   ============================================================ */
.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.expertise-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.expertise-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.expertise-card:hover::before {
  transform: scaleX(1);
}

.expertise-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.expertise-card__icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary-light);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
  font-size: 1.2rem;
}

.expertise-card__title {
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-1);
  margin-bottom: var(--space-1);
}

.expertise-card__desc {
  font-size: 0.78rem;
  color: var(--color-text-3);
  line-height: 1.5;
}

.expertise-card--link {
  text-decoration: none;
  cursor: pointer;
}

.expertise-card--link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.expertise-card__link-icon {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  color: var(--color-text-3);
  opacity: 0;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.expertise-card--link:hover .expertise-card__link-icon {
  opacity: 1;
  color: var(--color-primary);
}

/* ============================================================
   BLOG CARDS
   ============================================================ */
.blog-feed {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.post-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  text-decoration: none;
  display: block;
}

.post-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.post-card__image {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-surface-2);
  position: relative;
}

.post-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.post-card:hover .post-card__image img {
  transform: scale(1.03);
}

.post-card__image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  background: linear-gradient(135deg, var(--color-primary-light), rgba(0,199,190,0.1));
}

.post-card__body {
  padding: var(--space-4) var(--space-5);
}

.post-card__cats {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  flex-wrap: wrap;
}

.post-cat {
  display: inline-block;
  padding: 2px 10px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--border-radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.post-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-1);
  line-height: 1.35;
  margin-bottom: var(--space-2);
}

.post-card__excerpt {
  font-size: 0.85rem;
  color: var(--color-text-2);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.post-meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  color: var(--color-text-3);
}

.post-meta-item svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
}

/* Horizontal card variant */
.post-card--horizontal {
  display: flex;
  flex-direction: row;
}

.post-card--horizontal .post-card__image {
  width: 120px;
  min-width: 120px;
  aspect-ratio: auto;
  border-radius: 0;
}

.post-card--horizontal .post-card__body {
  flex: 1;
  padding: var(--space-3) var(--space-4);
}

.post-card--horizontal .post-card__title {
  font-size: 0.9rem;
  -webkit-line-clamp: 2;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card--horizontal .post-card__meta {
  margin-top: var(--space-2);
  padding-top: var(--space-2);
}

/* ============================================================
   ABOUT SNAPSHOT (trong trang chủ)
   ============================================================ */
.about-snapshot {
  background: var(--color-surface);
  border-radius: var(--border-radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.timeline-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.timeline-item__dot {
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
  position: relative;
}

.timeline-item__dot::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  width: 18px;
  height: 18px;
  background: var(--color-primary-light);
  border-radius: 50%;
}

.timeline-item__content {
  flex: 1;
}

.timeline-item__year {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.timeline-item__title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text-1);
  margin-top: 2px;
}

.timeline-item__sub {
  font-size: 0.78rem;
  color: var(--color-text-3);
  margin-top: 2px;
}

/* ============================================================
   SINGLE POST
   ============================================================ */
.single-post {
  background: var(--color-surface);
}

.post-header {
  background: var(--color-surface);
}

/* ---- Có ảnh: header chồng lên ảnh ---- */
.post-header--has-image {
  margin-top: -40px;
  padding: var(--space-5) 0 var(--space-6);
  position: relative;
  z-index: 2;
  border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

@media (min-width: 640px) {
  .post-header--has-image {
    margin-top: -60px;
    padding-top: var(--space-8);
  }
}

/* ---- Không có ảnh: hiển thị header nổi bật ---- */
.post-header--no-image {
  padding: var(--space-8) 0 var(--space-5);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

@media (min-width: 640px) {
  .post-header--no-image {
    padding: var(--space-10) 0 var(--space-6);
  }
}

@media (min-width: 768px) {
  .post-header--no-image {
    padding: var(--space-12) 0 var(--space-8);
  }
}

/* Tiêu đề bài viết */
.post-title {
  font-size: clamp(1.5rem, 4.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.18;
  color: var(--color-text-1);
  margin-top: var(--space-3);
}

@media (max-width: 639px) {
  .post-title {
    font-size: clamp(1.35rem, 5vw, 1.8rem);
    letter-spacing: -0.02em;
  }
}

/* Badge cat trước tiêu đề khi không có ảnh */
.post-no-image-header {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}

.post-hero-image {
  width: 100%;
  max-height: 420px;
  overflow: hidden;
  border-radius: 0;
  margin-bottom: 0;
  position: relative;
  background: var(--color-surface-2);
}

/* Giới hạn chiều cao theo breakpoint */
@media (max-width: 639px) {
  .post-hero-image { max-height: 220px; }
}

@media (min-width: 640px) and (max-width: 1023px) {
  .post-hero-image { max-height: 320px; }
}

.post-hero-image img {
  width: 100%;
  height: 100%;
  max-height: inherit;
  object-fit: cover;
  object-position: center 20%;
  display: block;
}

/* Gradient overlay phía dưới – chuyển mượt sang nền trắng */
.post-hero-image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to bottom, transparent 0%, rgba(255,255,255,0.7) 70%, var(--color-surface) 100%);
  pointer-events: none;
}

.post-content {
  padding-top: var(--space-6);
  padding-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .post-content {
    padding-top: var(--space-8);
    padding-bottom: var(--space-16);
  }
}

.post-content .entry-content {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text-2);
}

/* Mobile: font nhỏ hơn chút để đọc thoải mái */
@media (max-width: 639px) {
  .post-content .entry-content {
    font-size: 0.97rem;
    line-height: 1.8;
  }
}

.entry-content h2 {
  font-size: 1.4rem;
  margin: var(--space-8) 0 var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-1);
}

.entry-content h3 {
  font-size: 1.15rem;
  margin: var(--space-6) 0 var(--space-2);
  color: var(--color-text-1);
}

.entry-content p {
  margin-bottom: var(--space-4);
}

.entry-content img {
  border-radius: var(--border-radius-lg);
  margin: var(--space-6) 0;
  box-shadow: var(--shadow-md);
}

.entry-content ul, .entry-content ol {
  padding-left: var(--space-5);
  margin-bottom: var(--space-4);
  list-style: initial;
}

.entry-content ol { list-style: decimal; }

.entry-content li {
  margin-bottom: var(--space-2);
  color: var(--color-text-2);
}

.entry-content blockquote {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-4) var(--space-5);
  background: var(--color-primary-light);
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
  margin: var(--space-6) 0;
  font-style: italic;
  color: var(--color-primary-dark);
}

.entry-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-surface-2);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--color-text-1);
}

.entry-content pre {
  background: var(--color-text-1);
  color: #a8ff78;
  padding: var(--space-5);
  border-radius: var(--border-radius-md);
  overflow-x: auto;
  margin: var(--space-5) 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.entry-content pre code {
  background: none;
  color: inherit;
  padding: 0;
}

.entry-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Post Meta Row */
.post-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.post-meta-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.post-meta-author__avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-primary-light);
  flex-shrink: 0;
}

.post-meta-author__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-meta-author__name {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text-1);
}

.post-meta-author__role {
  font-size: 0.72rem;
  color: var(--color-text-3);
}

.post-meta-items {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  align-items: center;
}

/* Mobile: meta row stack dọc */
@media (max-width: 480px) {
  .post-meta-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
}

/* Post Tags */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-8) 0;
  padding: var(--space-5) 0;
  border-top: 1px solid var(--color-border);
}

.tag {
  display: inline-flex;
  padding: 5px 12px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-full);
  font-size: 0.78rem;
  color: var(--color-text-2);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.tag:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Author Box */
.author-box {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-5);
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  margin-bottom: var(--space-8);
}

.author-box__avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-primary-light);
  box-shadow: 0 0 0 3px var(--color-surface), 0 0 0 5px var(--color-primary);
}

.author-box__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-box__content {
  flex: 1;
  min-width: 0;
}

.author-box__name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-1);
}

.author-box__title {
  font-size: 0.78rem;
  color: var(--color-primary);
  margin-top: 3px;
  font-weight: 500;
  line-height: 1.5;
}

.author-box__bio {
  font-size: 0.85rem;
  color: var(--color-text-2);
  margin-top: var(--space-2);
  line-height: 1.6;
}

/* Author social buttons */
.author-box__social {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
  flex-wrap: wrap;
}

.author-social-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-2);
  text-decoration: none;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.author-social-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-blue);
}

@media (max-width: 480px) {
  .author-box {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .author-box__social {
    justify-content: center;
  }
}

/* ============================================================
   SEARCH
   ============================================================ */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.search-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.search-box {
  background: var(--color-surface);
  margin: 60px var(--space-4) 0;
  border-radius: var(--border-radius-xl);
  padding: var(--space-5);
  box-shadow: var(--shadow-lg);
  transform: translateY(-10px);
  transition: transform var(--transition-base);
}

.search-overlay.active .search-box {
  transform: translateY(0);
}

.search-field {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-surface-2);
  border-radius: var(--border-radius-full);
  padding: var(--space-3) var(--space-4);
}

.search-field svg {
  width: 18px;
  height: 18px;
  color: var(--color-text-3);
  flex-shrink: 0;
}

.search-field input {
  flex: 1;
  border: none;
  background: none;
  outline: none;
  font-size: 1rem;
  color: var(--color-text-1);
}

.search-field input::placeholder {
  color: var(--color-text-3);
}

/* ============================================================
   ARCHIVE / CATEGORY PAGE
   ============================================================ */
.archive-header {
  background: var(--color-surface);
  padding: var(--space-8) 0 var(--space-6);
}

.archive-title {
  font-size: 1.6rem;
  font-weight: 800;
}

.archive-desc {
  font-size: 0.9rem;
  color: var(--color-text-2);
  margin-top: var(--space-2);
}

.filter-chips {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding: var(--space-4) 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
}

.filter-chips::-webkit-scrollbar { display: none; }

.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: var(--border-radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  border: 1.5px solid var(--color-border);
  color: var(--color-text-2);
  background: var(--color-surface);
  transition: all var(--transition-fast);
}

.chip.active,
.chip:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-8) 0;
}

.page-numbers {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-2);
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1.5px solid transparent;
}

.page-numbers:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.page-numbers.current {
  background: var(--color-primary);
  color: white;
}

/* ============================================================
   COMMENTS
   ============================================================ */
.comments-section {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
}

.comments-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-5);
}

.comment {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}

.comment__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-primary-light);
}

.comment__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.comment__name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text-1);
}

.comment__date {
  font-size: 0.75rem;
  color: var(--color-text-3);
  margin-top: 2px;
}

.comment__text {
  font-size: 0.88rem;
  color: var(--color-text-2);
  line-height: 1.6;
  margin-top: var(--space-2);
}

/* Comment Form */
.comment-form {
  margin-top: var(--space-8);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-2);
  margin-bottom: var(--space-2);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius-md);
  background: var(--color-surface);
  color: var(--color-text-1);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  appearance: none;
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.12);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* ============================================================
   FOOTER – Copyright đơn giản
   ============================================================ */
.site-footer {
  background: var(--color-text-1);
  padding: var(--space-5) 0;
  margin-bottom: 0;
  text-align: center;
}

.site-footer__copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
}

.site-footer__copy a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-footer__copy a:hover {
  color: white;
}

/* ============================================================
   UTILITY
   ============================================================ */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* Loading skeleton */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface-2) 25%, var(--color-surface-3) 50%, var(--color-surface-2) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--border-radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Fade in animation */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  animation: fadeInUp 0.5s var(--ease-smooth) forwards;
}

@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Stagger delays */
.fade-in:nth-child(1) { animation-delay: 0ms; }
.fade-in:nth-child(2) { animation-delay: 80ms; }
.fade-in:nth-child(3) { animation-delay: 160ms; }
.fade-in:nth-child(4) { animation-delay: 240ms; }

/* WordPress Core Alignment Classes */
.alignleft  { float: left;  margin-right: var(--space-5); margin-bottom: var(--space-3); }
.alignright { float: right; margin-left: var(--space-5);  margin-bottom: var(--space-3); }
.aligncenter { text-align: center; margin: 0 auto var(--space-4); }
.alignwide   { margin-left: calc(-1 * var(--space-4)); margin-right: calc(-1 * var(--space-4)); }

/* ============================================================
   RESPONSIVE – TABLET & DESKTOP
   ============================================================ */
@media (min-width: 640px) {
  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__avatar {
    width: 130px;
    height: 130px;
  }
}

@media (min-width: 768px) {
  body {
    padding-bottom: 0;
  }

  .bottom-nav {
    display: none;
  }

  .nav-desktop {
    display: flex;
  }

  .expertise-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .blog-feed {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }

  .post-card--featured {
    grid-column: 1 / -1;
  }

  .footer-links {
    grid-template-columns: repeat(4, 1fr);
  }

  .hero {
    padding: var(--space-20) 0;
  }
}

@media (min-width: 1024px) {
  .blog-feed {
    grid-template-columns: repeat(3, 1fr);
  }

  .container {
    padding: 0 var(--space-8);
  }
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  .site-header,
  .bottom-nav,
  .site-footer { display: none; }
  body { padding: 0; background: white; }
}

/* ============================================================
   COMMUNITIES SECTION
   ============================================================ */
.communities-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 540px) {
  .communities-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1024px) {
  .communities-grid { grid-template-columns: repeat(4, 1fr); }
}

.community-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.community-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.community-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.community-card:hover::before { opacity: 1; }

/* Phần trên: icon + nội dung */
.community-card__top {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4) var(--space-3);
  flex: 1;
}

.community-card__icon {
  font-size: 1.6rem;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-2);
  border-radius: var(--border-radius-md);
}

.community-card__body { flex: 1; min-width: 0; }

.community-card__name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text-1);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.community-card__desc {
  font-size: 0.76rem;
  color: var(--color-text-3);
  margin-top: 3px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.community-card__meta {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: var(--space-2);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-primary);
}

.community-card__meta svg { flex-shrink: 0; }

/* Phần dưới: social buttons */
.community-card__footer {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-2);
  flex-wrap: wrap;
  position: relative;
}

.community-social-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: var(--border-radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border: 1.5px solid transparent;
}

/* Facebook – xanh dương */
.community-social-btn--fb {
  background: #E8F0FE;
  color: #1877F2;
  border-color: rgba(24,119,242,.2);
}
.community-social-btn--fb:hover {
  background: #1877F2;
  color: white;
  border-color: #1877F2;
}

/* Zalo – xanh lam */
.community-social-btn--zalo {
  background: #E6F4FF;
  color: #0068FF;
  border-color: rgba(0,104,255,.2);
}
.community-social-btn--zalo:hover {
  background: #0068FF;
  color: white;
  border-color: #0068FF;
}

/* Website – xám neutral */
.community-social-btn--web {
  background: var(--color-surface-3);
  color: var(--color-text-2);
  border-color: var(--color-border);
}
.community-social-btn--web:hover {
  background: var(--color-text-1);
  color: white;
  border-color: var(--color-text-1);
}

/* Tham gia – primary */
.community-social-btn--join {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: rgba(0,113,227,.2);
}
.community-social-btn--join:hover {
  background: var(--color-primary);
  color: white;
}

/* Hero social strip */
.hero__social {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-5);
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

@media (min-width: 640px) {
  .hero__social { justify-content: flex-start; }
}

/* ============================================================
   VIDEO GALLERY
   ============================================================ */
.video-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
}

/* 1 video: to, căn giữa */
.video-grid--single {
  max-width: 640px;
  margin: 0 auto;
}

/* 2 video: 2 cột tablet+ */
@media (min-width: 640px) {
  .video-grid--double {
    grid-template-columns: 1fr 1fr;
  }
}

/* 3+ video: 1→2→3 cột */
@media (min-width: 640px) {
  .video-grid--multi {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .video-grid--multi {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Card */
.video-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Embed container – tỉ lệ 16/9 */
.video-card__embed {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background: var(--color-text-1);
  position: relative;
}

/* TikTok: tỉ lệ 9/16 dọc */
.video-tiktok-wrap {
  position: relative;
  padding-bottom: 177.78%; /* 16/9 ngược */
  height: 0;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  background: var(--color-text-1);
}

.video-tiktok-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* TikTok: giới hạn chiều cao trên desktop */
@media (min-width: 640px) {
  .video-tiktok-wrap {
    padding-bottom: 0;
    height: 560px;
  }
}

/* YouTube facade (lazy load) */
.video-facade {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  cursor: pointer;
  background: #000;
}

.video-facade img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow), opacity var(--transition-base);
  opacity: 0.85;
}

.video-facade:hover img {
  transform: scale(1.03);
  opacity: 1;
}

.video-facade iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Play button */
.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255,255,255,.9);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 4px 20px rgba(0,0,0,.3);
  z-index: 2;
}

.video-play-btn svg {
  width: 26px;
  height: 26px;
  color: var(--color-text-1);
  margin-left: 3px; /* optical center */
}

.video-facade:hover .video-play-btn {
  transform: translate(-50%, -50%) scale(1.1);
  background: white;
}

/* Badge góc trên trái */
.video-facade__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: var(--border-radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  color: white;
  z-index: 2;
  pointer-events: none;
}

.video-facade__badge--yt { background: rgba(0,0,0,.55); }
.video-facade__badge--tt { background: rgba(0,0,0,.55); }

/* Title dưới video */
.video-card__title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-1);
  line-height: 1.4;
  letter-spacing: -0.01em;
  padding: 0 var(--space-1);
}