:root {
  --ink: #2a1d14;
  --paper: #fbf6ee;
  --card: #ffffff;
  --gold: #b8862b;
  --gold-soft: #f3e6c4;
  --crimson: #8c1d24;
  --muted: #6b5a4a;
  --radius: 14px;
  --shadow: 0 6px 20px rgba(42, 29, 20, 0.08);
  --font-head: "Playfair Display", Georgia, serif;
  --font-body: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
}
img { max-width: 100%; display: block; }
a { color: var(--crimson); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }

.container { width: min(1140px, 92%); margin-inline: auto; }
.section { padding: 48px 0; }
.lead { font-size: 1.08rem; color: var(--muted); max-width: 70ch; }
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--ink); color: #fff; padding: 8px 12px;
}
.skip-link:focus { left: 8px; z-index: 100; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 246, 238, 0.95); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--gold-soft);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-family: var(--font-head); font-weight: 700; font-size: 1.15rem; }
.brand:hover { text-decoration: none; }
.nav-toggle { display: none; background: none; border: 1px solid var(--gold); border-radius: 8px; font-size: 1.2rem; padding: 4px 10px; cursor: pointer; }
.site-nav { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: .95rem; }
.site-nav a { color: var(--ink); padding: 4px 0; }
.site-nav a[aria-current="page"] { color: var(--crimson); border-bottom: 2px solid var(--gold); }

@media (max-width: 860px) {
  .nav-toggle { display: inline-block; }
  .site-nav { display: none; width: 100%; flex-direction: column; gap: 0; padding-bottom: 12px; }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 10px 0; border-top: 1px solid var(--gold-soft); }
  .nav-wrap { flex-wrap: wrap; padding: 10px 0; }
}

/* Buttons */
.btn {
  display: inline-block; background: var(--crimson); color: #fff; border: 0; border-radius: 999px;
  padding: 12px 24px; font: inherit; font-weight: 600; cursor: pointer; transition: transform .15s, background .2s;
}
.btn:hover { background: #6d141a; text-decoration: none; transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--crimson); border: 2px solid var(--crimson); }
.btn-outline:hover { background: var(--crimson); color: #fff; }
.btn-small { padding: 8px 16px; font-size: .9rem; }

/* Hero */
.hero {
  background:
    radial-gradient(circle at 85% 20%, rgba(184, 134, 43, .25), transparent 40%),
    linear-gradient(135deg, #3b1d1f 0%, #8c1d24 60%, #b8862b 140%);
  color: #fff; padding: 96px 0;
}
.hero h1 { color: #fff; max-width: 22ch; }
.hero .lead { color: #f6e9d2; }
.eyebrow { text-transform: uppercase; letter-spacing: .15em; font-size: .8rem; color: var(--gold-soft); margin-bottom: 12px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.hero .btn-outline { color: #fff; border-color: #fff; }
.hero .btn-outline:hover { background: #fff; color: var(--crimson); }

/* Category tiles */
.cat-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.cat-tile {
  background: var(--card); border: 1px solid var(--gold-soft); border-radius: var(--radius);
  padding: 24px; color: var(--ink); box-shadow: var(--shadow); transition: transform .2s;
}
.cat-tile:hover { transform: translateY(-3px); text-decoration: none; }
.cat-tile strong { display: block; font-family: var(--font-head); font-size: 1.25rem; color: var(--crimson); margin-bottom: 6px; }
.cat-tile span { color: var(--muted); font-size: .95rem; }

.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; }

/* Product cards */
.grid { display: grid; gap: 22px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); margin-top: 20px; }
.card {
  background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  display: flex; flex-direction: column; transition: transform .2s;
}
.card:hover { transform: translateY(-4px); }
.card-media, .product-media {
  position: relative; display: flex; align-items: flex-end; padding: 14px;
  background: linear-gradient(160deg, var(--c1), var(--c2));
  aspect-ratio: 4 / 5;
}
.card-media { color: #fff; }
.card-dynasty {
  background: rgba(0, 0, 0, .35); color: #fff; padding: 4px 10px; border-radius: 999px; font-size: .8rem;
}
.card-body { padding: 18px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.card-body h3 { margin: 0; font-size: 1.05rem; }
.card-body h3 a { color: var(--ink); }
.card-cat { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--gold); margin: 0; }
.card-desc { color: var(--muted); font-size: .92rem; margin: 0; }
.card-foot { margin-top: auto; display: flex; justify-content: space-between; align-items: center; gap: 8px; padding-top: 10px; }
.price { font-weight: 700; color: var(--crimson); }
.price small { color: var(--muted); font-weight: 400; }
.price.big { font-size: 1.6rem; }

/* Filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip {
  border: 1px solid var(--gold); background: transparent; border-radius: 999px; padding: 8px 16px; cursor: pointer; font: inherit;
}
.chip.is-active, .chip:hover { background: var(--crimson); color: #fff; border-color: var(--crimson); }

/* Why grid */
.why-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.why-grid div { border-left: 3px solid var(--gold); padding-left: 16px; }

/* Breadcrumb */
.breadcrumb { padding-top: 20px; font-size: .9rem; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0; color: var(--muted); }
.breadcrumb li + li::before { content: "/"; margin-right: 6px; color: var(--gold); }

/* Product detail */
.product { display: grid; gap: 40px; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; padding: 24px 0 48px; }
.product-media { border-radius: var(--radius); box-shadow: var(--shadow); min-height: 420px; }
.product-info .btn { margin-top: 8px; }
.product-info h1 { margin-top: 4px; }
.product-info .card-cat { margin-bottom: 8px; }
.deposit { color: var(--muted); font-size: .95rem; }
.features { padding-left: 20px; }
.features li { margin-bottom: 6px; }
.options p { margin-bottom: 6px; }
@media (max-width: 760px) {
  .product { grid-template-columns: 1fr; }
  .product-media { min-height: 300px; }
}

/* FAQ */
.faq details {
  background: var(--card); border: 1px solid var(--gold-soft); border-radius: 10px;
  padding: 14px 18px; margin-bottom: 10px;
}
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin: 10px 0 0; color: var(--muted); }

/* Prose / steps */
.prose { max-width: 800px; }
.steps li { margin-bottom: 10px; }

/* Contact */
.contact { display: grid; gap: 40px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.form { display: flex; flex-direction: column; gap: 14px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-weight: 500; }
.form input, .form textarea {
  font: inherit; padding: 12px; border: 1px solid #cdbca3; border-radius: 10px; background: #fff;
}
.form input:focus, .form textarea:focus { outline: 2px solid var(--gold); border-color: var(--gold); }
.form .btn { align-self: flex-start; cursor: pointer; }

/* Footer */
.site-footer { background: var(--ink); color: #e9dcc7; padding: 40px 0 20px; margin-top: 48px; }
.site-footer a { color: var(--gold-soft); }
.site-footer strong { font-family: var(--font-head); color: #fff; }
.footer-grid { display: grid; gap: 28px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.footer-grid ul { list-style: none; padding: 0; margin: 6px 0 0; }
.footer-grid li { margin-bottom: 6px; }
.copyright { text-align: center; font-size: .85rem; opacity: .75; margin-top: 28px; }

:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

/* ===== Ảnh sản phẩm (picture/img responsive) ===== */
.card-media.has-img { padding: 0; overflow: hidden; display: block; position: relative; }
.card-media.has-img picture { display: block; width: 100%; }
.card-media.has-img img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 5; display: block; }
.card-media.has-img .card-dynasty { position: absolute; top: 12px; left: 12px; z-index: 2; }
.product-media.has-img { padding: 0; overflow: hidden; position: relative; }
.product-media.has-img picture { display: block; width: 100%; height: 100%; }
.product-media.has-img img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 5; display: block; }
.product-media.has-img .card-dynasty { position: absolute; top: 16px; left: 16px; z-index: 2; }

/* ===== Footer nav (V2) ===== */
.footer-inner { display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; }
.footer-inner nav { display: flex; flex-direction: column; gap: 8px; }

/* ===== Lịch studio ===== */
.schedule-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); margin-top: 24px; }
.schedule-day { background: var(--card); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.schedule-date { font-size: 1rem; margin: 0 0 12px; color: var(--crimson); }
.slot-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.slot { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px; font-size: .9rem; }
.slot-available { background: #dcfce7; color: #166534; }
.slot-booked { background: #fee2e2; color: #991b1b; }
.slot-blocked { background: #f1f5f9; color: #64748b; }
.slot-time { font-weight: 600; min-width: 110px; }
.slot-status { flex: 1; }
.schedule-legend { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 20px; }