:root {
  --primary: #ff5f6d;
  --primary-dark: #e74461;
  --secondary: #6c63ff;
  --accent: #16c79a;
  --dark: #15192b;
  --text: #273046;
  --muted: #6b7280;
  --line: #e8eaf4;
  --surface: rgba(255,255,255,.88);
  --surface-solid: #ffffff;
  --bg: linear-gradient(180deg, #fff8f6 0%, #f7f9ff 42%, #f9fcff 100%);
  --shadow-sm: 0 10px 30px rgba(21,25,43,.06);
  --shadow-md: 0 20px 50px rgba(21,25,43,.1);
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 32px;
  --container: 1200px;
  --font: 'Be Vietnam Pro', sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
button { border: 0; background: none; cursor: pointer; }
.container { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; }
.stack-lg > * + * { margin-top: 28px; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(255,255,255,.78);
  border-bottom: 1px solid rgba(255,255,255,.7);
}
.header-shell {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 78px; gap: 18px;
}
.site-logo { font-size: 1.6rem; font-weight: 900; letter-spacing: -.03em; }
.logo-deal, .logo-dot { color: var(--primary); }
.logo-voucher { color: var(--dark); }
.top-nav { display: flex; align-items: center; gap: 8px; }
.nav-link {
  padding: 12px 16px; border-radius: 999px; color: var(--muted); font-weight: 600;
  transition: .22s ease;
}
.nav-link:hover, .nav-link.active { background: rgba(255,95,109,.12); color: var(--primary-dark); }
.nav-admin { background: var(--dark); color: #fff; }
.mobile-menu-toggle {
  display: none; width: 44px; height: 44px; border-radius: 14px;
  background: rgba(108,99,255,.08); color: var(--secondary);
}
.hero-block {
  padding: 52px 0 22px;
}
.hero-grid {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 26px; align-items: stretch;
}
.hero-copy, .hero-media, .surface-card, .content-card, .article-card, .sticky-card, .stat-chip {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,.6);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(20px);
}
.hero-copy {
  padding: 40px; border-radius: var(--radius-lg);
}
.hero-copy h1 {
  margin: 12px 0 14px; font-size: clamp(2rem, 4vw, 3.7rem); line-height: 1.08; color: var(--dark);
}
.hero-copy p { margin: 0 0 20px; color: var(--muted); font-size: 1.05rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }
.hero-search { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-search input {
  flex: 1 1 260px; min-height: 54px; border-radius: 18px; border: 1px solid var(--line);
  padding: 0 18px; background: rgba(255,255,255,.85); outline: none;
}
.hero-media {
  border-radius: var(--radius-lg); padding: 28px; min-height: 100%;
  display: flex; align-items: center; justify-content: center;
}
.hero-graphic { display: grid; gap: 14px; width: 100%; }
.floating-card, .hero-brand-card {
  border-radius: 24px; padding: 18px 20px; background: linear-gradient(135deg, rgba(255,255,255,.92), rgba(255,255,255,.72));
  border: 1px solid rgba(255,255,255,.8); box-shadow: var(--shadow-sm);
}
.floating-card { display: flex; align-items: center; gap: 14px; font-weight: 700; color: var(--dark); }
.floating-card i { color: var(--primary); font-size: 1.15rem; }
.floating-card.stretch { display: grid; }
.hero-brand-card {
  width: 100%; text-align: center; background: linear-gradient(135deg, color-mix(in srgb, var(--brand-color, var(--primary)) 16%, white), rgba(255,255,255,.9));
}
.hero-brand-card img { width: 88px; height: 88px; object-fit: contain; margin: 0 auto 14px; border-radius: 22px; background: #fff; padding: 10px; }
.brand-avatar {
  width: 88px; height: 88px; margin: 0 auto 14px; border-radius: 22px;
  display: grid; place-items: center; background: var(--primary); color: #fff; font-size: 2rem; font-weight: 800;
}
.hero-brand-card h2 { margin: 0 0 8px; color: var(--dark); }
.hero-stats-inline { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.hero-stats-inline span, .pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: 999px; font-size: .86rem; font-weight: 700;
}
.hero-stats-inline span { background: rgba(255,255,255,.8); color: var(--dark); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px;
  background: rgba(108,99,255,.1); color: var(--secondary); font-weight: 700; font-size: .82rem; text-transform: uppercase; letter-spacing: .08em;
}
.page-main { padding: 18px 0 52px; }
.stats-strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.stat-chip {
  padding: 20px 22px; border-radius: 24px; display: grid; gap: 4px;
}
.stat-chip strong { font-size: 1.8rem; color: var(--dark); }
.stat-chip span { color: var(--muted); font-weight: 600; }
.surface-card {
  padding: 24px; border-radius: var(--radius-lg);
}
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.section-heading h2 { margin: 6px 0 0; font-size: clamp(1.3rem, 2vw, 2rem); color: var(--dark); }
.section-link { color: var(--secondary); font-weight: 700; }
.brand-chip-row {
  display: flex; flex-wrap: wrap; gap: 10px;
}
.brand-chip, .skeleton-chip {
  display: inline-flex; align-items: center; padding: 12px 16px; border-radius: 999px; font-weight: 700;
}
.brand-chip {
  background: color-mix(in srgb, var(--brand-color, var(--primary)) 12%, white);
  color: color-mix(in srgb, var(--brand-color, var(--primary)) 82%, black);
  border: 1px solid color-mix(in srgb, var(--brand-color, var(--primary)) 18%, white);
}
.brand-chip.active { background: var(--brand-color, var(--primary)); color: #fff; }
.skeleton-chip { width: 140px; height: 44px; background: linear-gradient(90deg,#eef1fa,#f9fbff,#eef1fa); animation: shimmer 1.4s linear infinite; }
.content-grid { display: grid; gap: 18px; }
.cards-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.cards-1 { grid-template-columns: 1fr; }
.content-card {
  border-radius: 26px; overflow: hidden; transition: transform .22s ease, box-shadow .22s ease;
}
.content-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.card-media { position: relative; aspect-ratio: 16 / 11; overflow: hidden; background: #f3f5fb; }
.card-media.square { aspect-ratio: 1 / 1; }
.card-media img, .article-cover, .modal-media { width: 100%; height: 100%; object-fit: cover; }
.card-media.wide { aspect-ratio: 16 / 9; }
.badge-sale { position: absolute; top: 14px; right: 14px; background: var(--primary); color: #fff; }
.badge-brand { position: absolute; top: 14px; left: 14px; background: rgba(21,25,43,.72); color: #fff; }
.card-body { padding: 18px; }
.card-body h3 { margin: 0 0 8px; font-size: 1.08rem; color: var(--dark); line-height: 1.35; }
.card-body p { margin: 0 0 14px; color: var(--muted); }
.card-meta {
  display: flex; gap: 10px; flex-wrap: wrap; color: var(--muted); font-size: .88rem; margin-bottom: 14px;
}
.card-meta span, .card-meta a { display: inline-flex; align-items: center; gap: 6px; }
.card-meta.compact { margin-bottom: 10px; }
.card-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.price-row { display: flex; align-items: center; gap: 10px; margin: 0 0 12px; }
.price-row strong { font-size: 1.2rem; color: var(--dark); }
.price-row del { color: var(--muted); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 18px; border-radius: 16px; font-weight: 800; transition: .22s ease;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), #ff8c5a); color: #fff; box-shadow: 0 16px 40px rgba(255,95,109,.22); }
.btn-primary:hover { transform: translateY(-1px); }
.btn-outline { border: 1px solid var(--line); color: var(--dark); background: rgba(255,255,255,.74); }
.btn-ghost { color: var(--secondary); background: rgba(108,99,255,.08); }
.share-row { display: flex; flex-wrap: wrap; gap: 12px; }
.share-btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 12px 16px; border-radius: 16px; font-weight: 700;
  background: rgba(255,255,255,.8); border: 1px solid var(--line);
}
.share-btn.facebook { color: #1877f2; }
.share-btn.x { color: #111; }
.share-btn.zalo { color: #0068ff; }
.share-btn.copy { color: var(--secondary); }
.empty-block {
  grid-column: 1/-1; padding: 28px; text-align: center; border-radius: 22px; color: var(--muted);
  background: rgba(255,255,255,.62); border: 1px dashed var(--line);
}
.site-footer { padding: 8px 0 36px; }
.footer-shell {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; padding: 28px;
  border-radius: var(--radius-lg); background: rgba(21,25,43,.95); color: rgba(255,255,255,.86);
}
.footer-copy { max-width: 640px; color: rgba(255,255,255,.72); }
.footer-links-group { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.footer-links-group h4 { margin: 0 0 12px; color: #fff; }
.footer-links-group ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer-links-group a { color: rgba(255,255,255,.72); }
.footer-bottom { padding-top: 14px; color: var(--muted); text-align: center; }
.modal-overlay {
  position: fixed; inset: 0; background: rgba(9,13,26,.6); backdrop-filter: blur(10px);
  display: grid; place-items: center; padding: 18px; z-index: 80;
}
.modern-modal {
  width: min(920px, 100%); padding: 22px; border-radius: 30px; background: #fff; position: relative;
  box-shadow: var(--shadow-md);
}
.modal-close {
  position: absolute; top: 16px; right: 16px; width: 42px; height: 42px; border-radius: 14px;
  background: #f3f5fb; color: var(--dark);
}
#voucherModalContent { display: grid; grid-template-columns: .88fr 1.12fr; gap: 20px; }
.modal-media-wrap { border-radius: 22px; overflow: hidden; background: #f3f5fb; }
.modal-copy h2 { margin: 12px 0; color: var(--dark); font-size: clamp(1.4rem, 3vw, 2rem); }
.modal-copy p { color: var(--muted); }
.highlight-line { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; color: var(--dark); }
.modal-note {
  margin-top: 18px; padding: 16px; border-radius: 18px; background: #f8faff; border: 1px solid var(--line);
}
.modal-note h3 { margin: 0 0 8px; color: var(--dark); }
.modal-actions { margin-top: 18px; }
.toast-container {
  position: fixed; right: 18px; bottom: 18px; z-index: 90; display: grid; gap: 10px;
}
.toast {
  min-width: 240px; display: flex; align-items: center; gap: 10px; padding: 14px 16px;
  border-radius: 16px; background: rgba(21,25,43,.95); color: #fff; box-shadow: var(--shadow-md);
}
.article-layout { display: grid; grid-template-columns: minmax(0,1.4fr) minmax(280px,.6fr); gap: 24px; }
.article-card, .sticky-card { padding: 28px; border-radius: var(--radius-lg); }
.article-head h1 { margin: 12px 0 12px; color: var(--dark); font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1.12; }
.article-meta { display: flex; flex-wrap: wrap; gap: 14px; color: var(--muted); margin-bottom: 10px; }
.article-cover { margin: 22px 0; border-radius: 22px; aspect-ratio: 16/9; }
.article-excerpt { font-size: 1.08rem; color: var(--muted); margin-bottom: 16px; }
.article-content { color: var(--text); font-size: 1.02rem; }
.article-content h2, .article-content h3 { color: var(--dark); margin-top: 28px; }
.article-content p { margin: 0 0 14px; }
.article-content ul, .article-content ol { padding-left: 20px; }
.sticky-card { position: sticky; top: 96px; }
@keyframes shimmer { from { background-position: 0 0; } to { background-position: 200% 0; } }
@media (max-width: 1080px) {
  .hero-grid, .article-layout, .footer-shell, #voucherModalContent { grid-template-columns: 1fr; }
  .cards-3, .stats-strip { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .sticky-card { position: static; }
}
@media (max-width: 760px) {
  .container { width: min(var(--container), calc(100% - 20px)); }
  .mobile-menu-toggle { display: inline-grid; place-items: center; }
  .top-nav {
    position: absolute; top: 76px; left: 10px; right: 10px; display: none; flex-direction: column; align-items: stretch;
    padding: 12px; border-radius: 22px; background: rgba(255,255,255,.96); box-shadow: var(--shadow-md);
  }
  .top-nav.open { display: flex; }
  .hero-copy, .hero-media, .surface-card, .article-card, .sticky-card { padding: 20px; }
  .cards-3, .stats-strip, .footer-links-group { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .hero-actions, .hero-search, .card-actions, .share-row { display: grid; grid-template-columns: 1fr; }
}