/* =========================================================================
   Style dùng chung cho storefront (khách hàng) — Hai Ninh Shop demo
   ========================================================================= */

:root {
  --color-primary: #c1272d;
  --color-primary-dark: #9e1f24;
  --color-ink: #1f2430;
  --color-ink-soft: #5b6270;
  --color-border: #e6e5e2;
  --color-bg: #faf9f7;
  --color-card: #ffffff;
  --color-sale: #d64545;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(20, 20, 20, 0.06);
  --header-h: 64px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
ul { list-style: none; margin: 0; padding: 0; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
}
.header-top {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 24px;
}
.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary);
  white-space: nowrap;
}
.logo span { color: var(--color-ink); }

.search-box {
  flex: 1;
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 16px;
  gap: 8px;
  max-width: 480px;
}
.search-box input {
  border: none;
  background: transparent;
  outline: none;
  flex: 1;
  font-size: 14px;
  color: var(--color-ink);
}
.search-box svg { flex: none; opacity: .55; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: auto;
}
.icon-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-ink);
}
.cart-badge {
  position: absolute;
  top: -8px;
  right: -12px;
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

.main-nav {
  border-top: 1px solid var(--color-border);
}
.main-nav ul {
  display: flex;
  gap: 28px;
  overflow-x: auto;
}
.main-nav a {
  display: block;
  padding: 12px 2px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink-soft);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ---------- Hero / Banner ---------- */
.hero {
  margin: 24px 0;
  background: linear-gradient(120deg, #1f2430, #3a2230);
  color: #fff;
  border-radius: 16px;
  padding: 48px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.hero h1 { font-size: 30px; margin: 0 0 10px; }
.hero p { margin: 0 0 18px; color: #d9d6ce; max-width: 420px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  border: none;
  font-size: 14px;
  font-weight: 700;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-outline { background: transparent; border: 1px solid currentColor; color: inherit; }
.btn-dark { background: var(--color-ink); color: #fff; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--color-ink-soft); border: 1px solid var(--color-border); }

/* ---------- Section headings ---------- */
.section { margin: 40px 0; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 18px;
}
.section-head h2 { font-size: 20px; margin: 0; }
.section-head a { font-size: 13px; font-weight: 700; color: var(--color-primary); }

/* ---------- Category chips (home) ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
}
.category-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 10px;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
}
.category-card img {
  width: 56px; height: 56px; margin: 0 auto 10px; border-radius: 50%; object-fit: cover;
}
.category-card:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ---------- Product grid & card ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 18px;
}
.product-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.product-card .thumb {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  position: relative;
  background: #eee;
}
.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.badge-sale {
  position: absolute;
  top: 10px; left: 10px;
  background: var(--color-sale);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 6px;
}
.product-card .body { padding: 12px 14px 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-card .cat { font-size: 11px; color: var(--color-ink-soft); text-transform: uppercase; letter-spacing: .04em; }
.product-card .name {
  font-size: 14px; font-weight: 600; margin: 0;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  min-height: 38px;
}
.price-row { display: flex; align-items: baseline; gap: 8px; margin-top: auto; }
.price-now { color: var(--color-primary); font-weight: 800; font-size: 16px; }
.price-old { color: var(--color-ink-soft); font-size: 12px; text-decoration: line-through; }
.color-dots { display: flex; gap: 5px; margin-top: 2px; }
.color-dot { width: 14px; height: 14px; border-radius: 50%; border: 1px solid rgba(0,0,0,.15); }

/* ---------- Filters (category page) ---------- */
.layout-with-filters {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: start;
}
.filter-panel {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px;
  position: sticky;
  top: calc(var(--header-h) + 60px);
}
.filter-group { margin-bottom: 20px; }
.filter-group:last-child { margin-bottom: 0; }
.filter-group h4 { font-size: 13px; margin: 0 0 10px; text-transform: uppercase; letter-spacing: .04em; color: var(--color-ink-soft); }
.filter-group label {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; margin-bottom: 8px; cursor: pointer;
}
.toolbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px; flex-wrap: wrap; gap: 10px;
}
.toolbar select, .toolbar input[type=number] {
  padding: 8px 10px; border: 1px solid var(--color-border); border-radius: 8px; font-size: 13px;
}
.result-count { font-size: 13px; color: var(--color-ink-soft); }
.breadcrumb { font-size: 13px; color: var(--color-ink-soft); margin: 18px 0 6px; }
.breadcrumb a { color: var(--color-ink-soft); }
.breadcrumb a:hover { color: var(--color-primary); }

/* ---------- Product detail ---------- */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin: 24px 0 50px;
}
.gallery-main {
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: #eee;
  margin-bottom: 10px;
}
.gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumbs { display: flex; gap: 10px; }
.gallery-thumbs img {
  width: 72px; height: 90px; object-fit: cover; border-radius: 8px;
  border: 2px solid transparent; opacity: .75; cursor: pointer;
}
.gallery-thumbs img.active { border-color: var(--color-primary); opacity: 1; }

.pd-title { font-size: 24px; margin: 0 0 8px; }
.pd-price { display: flex; align-items: baseline; gap: 12px; margin-bottom: 18px; }
.pd-price .price-now { font-size: 26px; }
.pd-desc { color: var(--color-ink-soft); font-size: 14px; margin-bottom: 22px; }

.option-group { margin-bottom: 20px; }
.option-label { font-size: 13px; font-weight: 700; margin-bottom: 10px; display: flex; gap: 8px; }
.option-label .sub { font-weight: 400; color: var(--color-ink-soft); }

.swatch-list { display: flex; gap: 10px; flex-wrap: wrap; }
.swatch {
  width: 40px; height: 40px; border-radius: 50%;
  border: 2px solid var(--color-border);
  cursor: pointer; position: relative;
}
.swatch.active { border-color: var(--color-primary); box-shadow: 0 0 0 2px #fff inset; }
.swatch.active::after {
  content: '✓'; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; text-shadow: 0 0 2px rgba(0,0,0,.6);
}

.size-list { display: flex; gap: 8px; flex-wrap: wrap; }
.size-pill {
  min-width: 46px; padding: 8px 12px; text-align: center;
  border: 1px solid var(--color-border); border-radius: 8px; font-size: 13px; font-weight: 600;
  cursor: pointer; background: #fff;
}
.size-pill.active { border-color: var(--color-ink); background: var(--color-ink); color: #fff; }
.size-pill.disabled { color: #bbb; text-decoration: line-through; cursor: not-allowed; background: #f4f4f4; }

.qty-stepper { display: inline-flex; align-items: center; border: 1px solid var(--color-border); border-radius: 8px; }
.qty-stepper button { width: 36px; height: 36px; background: none; border: none; font-size: 16px; }
.qty-stepper input { width: 44px; text-align: center; border: none; font-size: 14px; }
.stock-note { font-size: 12px; color: var(--color-ink-soft); margin-top: 8px; }

.pd-actions { display: flex; align-items: center; gap: 14px; margin-top: 26px; }

/* ---------- Cart page ---------- */
.cart-layout { display: grid; grid-template-columns: 1fr 320px; gap: 28px; align-items: start; margin: 24px 0 60px; }
.cart-table { width: 100%; border-collapse: collapse; background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.cart-table th { text-align: left; font-size: 12px; text-transform: uppercase; color: var(--color-ink-soft); padding: 14px 16px; border-bottom: 1px solid var(--color-border); }
.cart-table td { padding: 14px 16px; border-bottom: 1px solid var(--color-border); vertical-align: middle; font-size: 14px; }
.cart-item-info { display: flex; gap: 12px; align-items: center; }
.cart-item-info img { width: 64px; height: 78px; object-fit: cover; border-radius: 8px; }
.cart-item-meta { font-size: 12px; color: var(--color-ink-soft); margin-top: 4px; }
.remove-link { color: var(--color-sale); font-size: 12px; font-weight: 700; }

.summary-card {
  background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius);
  padding: 22px; position: sticky; top: calc(var(--header-h) + 20px);
}
.summary-card h3 { margin: 0 0 16px; font-size: 16px; }
.summary-row { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 10px; color: var(--color-ink-soft); }
.summary-row.total { color: var(--color-ink); font-weight: 800; font-size: 17px; border-top: 1px dashed var(--color-border); padding-top: 14px; margin-top: 8px; }
.summary-row.total .price-now { font-size: 20px; }

.empty-state { text-align: center; padding: 70px 20px; color: var(--color-ink-soft); }
.empty-state .icon { font-size: 46px; margin-bottom: 14px; }

/* ---------- Checkout ---------- */
.checkout-layout { display: grid; grid-template-columns: 1fr 380px; gap: 30px; margin: 24px 0 60px; align-items: start; }
.checkout-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; }
.checkout-card h3 { margin: 0 0 16px; font-size: 16px; }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.form-row input, .form-row textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--color-border); border-radius: 8px; font-size: 14px; font-family: inherit;
}
.form-row textarea { resize: vertical; min-height: 70px; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.bank-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.bank-tab {
  padding: 9px 16px; border: 1px solid var(--color-border); border-radius: 999px; font-size: 13px; font-weight: 700; background: #fff;
}
.bank-tab.active { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }

.qr-box { display: flex; gap: 20px; align-items: center; background: var(--color-bg); border-radius: var(--radius); padding: 18px; flex-wrap: wrap; }
.qr-box img { width: 160px; height: 160px; object-fit: cover; border-radius: 10px; border: 1px solid var(--color-border); }
.qr-info div { font-size: 13px; margin-bottom: 6px; }
.qr-info b { display: inline-block; min-width: 110px; color: var(--color-ink-soft); font-weight: 600; }
.order-note-box { background: #fff7e6; border: 1px solid #f2d38a; color: #7a5b00; border-radius: 8px; padding: 12px 14px; font-size: 13px; margin-top: 16px; }

.mini-item { display: flex; gap: 10px; font-size: 13px; margin-bottom: 12px; }
.mini-item img { width: 46px; height: 56px; object-fit: cover; border-radius: 6px; }
.mini-item .meta { color: var(--color-ink-soft); font-size: 12px; }

/* ---------- Success page ---------- */
.success-box {
  max-width: 520px; margin: 60px auto; text-align: center; background: var(--color-card);
  border: 1px solid var(--color-border); border-radius: 16px; padding: 44px 30px;
}
.success-box .check { font-size: 52px; margin-bottom: 12px; }
.order-code-box {
  display: inline-block; background: var(--color-bg); border: 1px dashed var(--color-border);
  border-radius: 8px; padding: 10px 18px; font-weight: 800; letter-spacing: .04em; margin: 14px 0 22px;
}

/* ---------- Footer ---------- */
.site-footer { margin-top: 60px; background: var(--color-ink); color: #cfd2da; padding: 40px 0 24px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 24px; margin-bottom: 24px; }
.footer-grid h4 { color: #fff; font-size: 14px; margin: 0 0 12px; }
.footer-grid li { font-size: 13px; margin-bottom: 8px; color: #a9adb8; }
.footer-bottom { border-top: 1px solid #333a4a; padding-top: 18px; font-size: 12px; text-align: center; color: #888; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .layout-with-filters { grid-template-columns: 1fr; }
  .filter-panel { position: static; }
  .product-detail { grid-template-columns: 1fr; }
  .cart-layout, .checkout-layout { grid-template-columns: 1fr; }
  .summary-card { position: static; }
}
@media (max-width: 600px) {
  .search-box { display: none; }
  .hero { padding: 30px 22px; }
  .form-grid-2 { grid-template-columns: 1fr; }
  .cart-table thead { display: none; }
  .cart-table, .cart-table tbody, .cart-table tr, .cart-table td { display: block; width: 100%; }
  .cart-table tr { border-bottom: 8px solid var(--color-bg); padding: 10px 0; }
  .cart-table td { border-bottom: none; display: flex; justify-content: space-between; align-items: center; }
  .cart-table td::before { content: attr(data-label); font-size: 11px; color: var(--color-ink-soft); font-weight: 700; }
  .cart-table td.cart-cell-product::before { display: none; }
}