/* ==========================================================================
   L'hiver — Trang con: Cửa hàng · Sản phẩm · Đặt hàng · Liên hệ
   ========================================================================== */

.page { padding-top: var(--header-h); }
.page-head { padding: clamp(40px, 6vw, 80px) 0 clamp(24px, 4vw, 40px); }
.page-head .section-title { margin-top: 10px; }
.breadcrumb { font-size: 11px; letter-spacing: .15em; text-transform: uppercase; color: var(--muted); display: flex; gap: 10px; flex-wrap: wrap; }
.breadcrumb a:hover { color: var(--ink); }

/* ---------- Cửa hàng ---------- */
.shop-bar {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  padding: 14px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  margin-bottom: clamp(28px, 4vw, 48px);
  position: sticky; top: var(--header-h); background: #fff; z-index: 20;
}
.filters { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; max-width: 100%; }
.filters::-webkit-scrollbar { display: none; }
.filter {
  flex: 0 0 auto; height: 36px; padding: 0 16px; border: 1px solid var(--line); border-radius: 999px;
  font-size: 11px; letter-spacing: .15em; text-transform: uppercase; white-space: nowrap;
  transition: background .25s, color .25s, border-color .25s;
}
.filter:hover { border-color: var(--ink); }
.filter.is-active { background: var(--ink); color: #fff; border-color: var(--ink); }
.sort { display: flex; align-items: center; gap: 10px; font-size: 11px; letter-spacing: .15em; text-transform: uppercase; color: var(--muted); }
.sort select { border: 0; border-bottom: 1px solid var(--ink); background: none; padding: 6px 0; font-size: 12px; letter-spacing: .05em; text-transform: none; color: var(--ink); }
.shop-count { font-size: 12px; color: var(--muted); margin-bottom: 18px; }
.empty { padding: 60px 0; text-align: center; color: var(--muted); }

/* ---------- Chi tiết sản phẩm ---------- */
.product { display: grid; gap: 28px; }
@media (min-width: 900px) { .product { grid-template-columns: 1.15fr 1fr; gap: 64px; align-items: start; } }
.gallery { display: grid; gap: 10px; }
.gallery__main { aspect-ratio: 3/4; overflow: hidden; background: var(--soft); }
.gallery__main img { width: 100%; height: 100%; object-fit: cover; }
.gallery__thumbs { display: flex; gap: 8px; }
.gallery__thumbs button { width: 64px; aspect-ratio: 3/4; overflow: hidden; border: 1px solid transparent; background: var(--soft); }
.gallery__thumbs button.is-active { border-color: var(--ink); }
.gallery__thumbs img { width: 100%; height: 100%; object-fit: cover; }
@media (min-width: 900px) {
  .gallery { grid-template-columns: 72px 1fr; }
  .gallery__thumbs { flex-direction: column; order: -1; }
  .gallery__thumbs button { width: 100%; }
}
.pinfo { position: sticky; top: calc(var(--header-h) + 24px); }
.pinfo__name { font-family: var(--serif); font-size: clamp(32px, 4vw, 48px); line-height: 1.05; margin-top: 8px; }
.pinfo__price { margin-top: 12px; font-size: 18px; display: flex; gap: 12px; align-items: baseline; }
.pinfo__price s { color: var(--muted); font-size: 14px; }
.pinfo__desc { margin-top: 16px; color: var(--ink-2); }
.pinfo__buy { display: grid; gap: 10px; margin-top: 24px; }
@media (min-width: 480px) { .pinfo__buy { grid-template-columns: 1fr 1fr; } }
.pinfo__note { margin-top: 14px; font-size: 12px; color: var(--muted); display: grid; gap: 4px; }

.acc { margin-top: 28px; border-top: 1px solid var(--line); }
.acc__item { border-bottom: 1px solid var(--line); }
.acc__btn { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 16px 0; font-size: 12px; letter-spacing: .18em; text-transform: uppercase; font-weight: 500; text-align: left; }
.acc__btn::after { content: "+"; font-size: 18px; font-weight: 300; transition: transform .3s; }
.acc__item.is-open .acc__btn::after { transform: rotate(45deg); }
.acc__body { display: none; padding: 0 0 18px; color: var(--ink-2); font-size: 14px; }
.acc__item.is-open .acc__body { display: block; }
.acc__body p + p { margin-top: 8px; }

.size-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.size-table th, .size-table td { padding: 8px 6px; border-bottom: 1px solid var(--line); text-align: left; }
.size-table th { font-weight: 500; font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }

/* Thanh mua ngay cố định trên mobile */
.buybar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  display: flex; gap: 10px; align-items: center;
  padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom));
  background: rgba(255,255,255,.96); border-top: 1px solid var(--line);
  transform: translateY(100%); transition: transform .4s var(--ease);
}
.buybar.is-visible { transform: none; }
.buybar__price { font-weight: 500; font-size: 15px; white-space: nowrap; }
.buybar .btn { flex: 1; height: 44px; }
@media (min-width: 900px) { .buybar { display: none; } }

/* ---------- Đặt hàng ---------- */
.checkout { display: grid; gap: 32px; }
@media (min-width: 1000px) { .checkout { grid-template-columns: 1.2fr .9fr; gap: 64px; align-items: start; } }
.form-section { margin-bottom: 32px; }
.form-section__title { font-family: var(--serif); font-size: 26px; margin-bottom: 16px; display: flex; align-items: baseline; gap: 12px; }
.form-section__title small { font-family: var(--sans); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
.fields { display: grid; gap: 14px; }
@media (min-width: 640px) { .fields--2 { grid-template-columns: 1fr 1fr; } }
.field { display: grid; gap: 6px; }
.field label { font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
.field label b { color: var(--danger); font-weight: 400; }
.field input, .field select, .field textarea {
  width: 100%; height: 48px; padding: 0 14px; border: 1px solid var(--line); background: #fff;
  border-radius: var(--radius); transition: border-color .25s; font-weight: 300;
}
.field textarea { height: auto; min-height: 96px; padding: 12px 14px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--ink); }
.field.is-error input, .field.is-error select { border-color: var(--danger); }
.field__err { font-size: 12px; color: var(--danger); display: none; }
.field.is-error .field__err { display: block; }

.pay { display: grid; gap: 10px; }
.pay__opt { border: 1px solid var(--line); padding: 16px; cursor: pointer; transition: border-color .25s; display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: start; }
.pay__opt:hover { border-color: var(--ink-2); }
.pay__opt.is-active { border-color: var(--ink); }
.pay__opt input { margin-top: 3px; accent-color: var(--ink); }
.pay__title { font-weight: 500; font-size: 14px; }
.pay__desc { font-size: 13px; color: var(--ink-2); margin-top: 3px; }
.pay__detail { grid-column: 1 / -1; display: none; margin-top: 6px; padding-top: 14px; border-top: 1px dashed var(--line); font-size: 13px; }
.pay__opt.is-active .pay__detail { display: block; }
.bank { display: grid; gap: 14px; }
@media (min-width: 560px) { .bank { grid-template-columns: 120px 1fr; } }
.bank__qr { width: 120px; aspect-ratio: 1; background: var(--soft); display: flex; align-items: center; justify-content: center; font-size: 10px; text-align: center; color: var(--muted); padding: 10px; }
.bank__row { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px solid var(--line); }
.bank__row span:first-child { color: var(--muted); }
.bank__row b { font-weight: 500; }

.summary { background: var(--soft); padding: 22px; order: -1; }
@media (min-width: 1000px) { .summary { order: 0; position: sticky; top: calc(var(--header-h) + 16px); } }
.summary__title { font-family: var(--serif); font-size: 26px; margin-bottom: 14px; }
.sum-item { display: grid; grid-template-columns: 64px 1fr auto; gap: 12px; align-items: start; padding: 12px 0; border-bottom: 1px solid var(--line); }
.sum-item__img { aspect-ratio: 3/4; overflow: hidden; background: #fff; }
.sum-item__img img { width: 100%; height: 100%; object-fit: cover; }
.sum-item__name { font-size: 13px; font-weight: 500; }
.sum-item__meta { font-size: 12px; color: var(--muted); margin-top: 2px; }
.sum-item__price { font-size: 13px; white-space: nowrap; }
.sum-item .qty { height: 32px; margin-top: 8px; }
.sum-item .qty button { width: 32px; font-size: 16px; }
.sum-item .qty input { width: 36px; font-size: 13px; }
.sum-item__remove { font-size: 11px; color: var(--muted); margin-top: 8px; text-decoration: underline; }
.sum-row { display: flex; justify-content: space-between; padding: 8px 0; font-size: 14px; }
.sum-row--total { border-top: 1px solid var(--ink); margin-top: 8px; padding-top: 14px; font-size: 16px; font-weight: 500; }
.sum-row .free { color: var(--accent-ink); }
.summary .btn { margin-top: 16px; }
.summary__note { margin-top: 12px; font-size: 12px; color: var(--muted); text-align: center; }
.summary__empty { padding: 24px 0; text-align: center; color: var(--muted); }

.success { text-align: center; max-width: 640px; margin: 0 auto; padding: clamp(40px, 8vw, 96px) 0; }
.success__icon { width: 64px; height: 64px; border-radius: 50%; border: 1px solid var(--ink); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.success__icon svg { width: 26px; height: 26px; stroke: currentColor; fill: none; stroke-width: 1.5; }
.success__code { font-family: var(--serif); font-size: 22px; margin-top: 8px; }
.success__box { text-align: left; margin-top: 28px; padding: 20px; background: var(--soft); }
.success__box h4 { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; margin-bottom: 10px; }
.success .btn { margin-top: 28px; }

/* ---------- Liên hệ ---------- */
.contact { display: grid; gap: 40px; }
@media (min-width: 900px) { .contact { grid-template-columns: 1fr 1.2fr; gap: 80px; align-items: start; } }
.contact-info { display: grid; gap: 22px; }
.contact-info__item { padding-top: 16px; border-top: 1px solid var(--line); }
.contact-info__item h4 { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.contact-info__item p, .contact-info__item a { font-size: 16px; }
.contact-info__item .big { font-family: var(--serif); font-size: 28px; }
.policy { display: grid; gap: 40px; margin-top: clamp(48px, 8vw, 96px); }
@media (min-width: 900px) { .policy { grid-template-columns: repeat(3, 1fr); } }
.policy__item { padding-top: 20px; border-top: 1px solid var(--ink); scroll-margin-top: calc(var(--header-h) + 20px); }
.policy__item h3 { font-family: var(--serif); font-size: 26px; margin-bottom: 10px; }
.policy__item p { color: var(--ink-2); font-size: 14px; }
.policy__item p + p { margin-top: 8px; }