:root {
  --orange: #ee4d2d;
  --orange-dark: #d73211;
  --bg: #f5f5f5;
  --card: #fff;
  --line: #e5e5e5;
  --text: #222;
  --muted: #757575;
  --gold: #ffb400;
  --art-bg: #f4f1ed;
  --radius: 10px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}
a { color: var(--orange); }
button { font: inherit; cursor: pointer; }
input, textarea { font: inherit; }

/* ---------- header ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--orange);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,.18);
}
.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo { display: flex; align-items: center; gap: 6px; color: #fff; text-decoration: none; flex: none; }
.logo-bag { display: inline-flex; }
.logo-text { font-weight: 800; font-size: 20px; letter-spacing: -.5px; }
.search {
  flex: 1;
  display: flex;
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
  min-width: 0;
}
.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  padding: 9px 10px;
  outline: none;
  color: var(--text);
}
.search button {
  border: 0;
  background: var(--orange-dark);
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
}
.top-icons { display: flex; gap: 4px; flex: none; }
.icon-btn {
  position: relative;
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 20px;
  padding: 6px 8px;
  border-radius: 8px;
}
.icon-btn:hover { background: rgba(255,255,255,.18); }
.badge {
  position: absolute;
  top: 0;
  right: 0;
  background: #fff;
  color: var(--orange);
  font-size: 11px;
  font-weight: 800;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}
.announce-pop {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 12px 12px;
}
.announce-pop p { margin: 4px 0 0; font-size: 14px; }

/* ---------- layout ---------- */
main { max-width: 1100px; margin: 0 auto; padding: 12px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
}
.section h2, .shop h1 { margin: 0 0 8px; }
.section h2 { font-size: 18px; }

/* ---------- shop header ---------- */
.shop { display: flex; gap: 12px; align-items: flex-start; flex-wrap: wrap; }
.shop-avatar { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; border: 2px solid var(--orange); flex: none; }
.shop-info { flex: 1; min-width: 180px; }
.shop-info h1 { font-size: 18px; }
.shop-user { margin: 0; color: var(--muted); font-size: 14px; }
.star-seller {
  background: var(--orange);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  margin-left: 6px;
  white-space: nowrap;
}
.shop-meta { margin: 6px 0 0; font-size: 14px; }
.stars { color: var(--gold); letter-spacing: 1px; }
.shop-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---------- buttons ---------- */
.btn {
  border: 1px solid var(--orange);
  background: #fff;
  color: var(--orange);
  border-radius: 6px;
  padding: 9px 16px;
  font-weight: 700;
}
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-dark); }
.btn-outline:hover { background: #fff5f2; }
.btn-big { padding: 12px 18px; font-size: 16px; }
.btn-danger { border-color: #c62828; color: #c62828; }
.btn:disabled { opacity: .55; cursor: default; }

/* ---------- product ---------- */
.product { display: grid; gap: 16px; }
.main-img-wrap {
  position: relative;
  background: var(--art-bg);
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.main-img { width: 100%; height: 100%; object-fit: contain; background: var(--art-bg); display: block; }
.img-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px; height: 36px;
  border: 0; border-radius: 50%;
  background: rgba(0,0,0,.45); color: #fff;
  font-size: 22px; line-height: 1;
}
.img-nav.prev { left: 8px; }
.img-nav.next { right: 8px; }
.thumbs { display: flex; gap: 8px; margin-top: 8px; }
.thumbs img {
  width: 64px; height: 64px;
  object-fit: contain; background: var(--art-bg);
  border: 2px solid var(--line); border-radius: 8px;
  cursor: pointer;
}
.thumbs img.active { border-color: var(--orange); }
.buy-box h2 { font-size: 18px; margin: 0 0 6px; line-height: 1.35; }
.rating-row { margin: 0 0 10px; font-size: 14px; color: var(--muted); }
.sep { margin: 0 6px; }
.flash-sale {
  background: linear-gradient(90deg, var(--orange), #ff7337);
  color: #fff;
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.flash-label { font-weight: 800; letter-spacing: .5px; }
.flash-timer { font-variant-numeric: tabular-nums; }
.price-row { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.price-now { font-size: 30px; font-weight: 800; color: var(--orange); }
.price-before { color: var(--muted); text-decoration: line-through; }
.discount-badge { background: var(--orange); color: #fff; font-size: 13px; font-weight: 800; padding: 2px 8px; border-radius: 4px; }
.ship-row { margin: 4px 0; display: flex; gap: 6px; flex-wrap: wrap; }
.ship-badge { border: 1px solid #ffd9cf; background: #fff5f2; color: var(--orange); font-size: 13px; padding: 2px 8px; border-radius: 4px; }
.voucher-row { color: var(--muted); font-size: 14px; }
.buy-field { margin: 14px 0; }
.field-label { display: block; color: var(--muted); font-size: 14px; margin-bottom: 6px; }
.variation-row { display: flex; gap: 8px; flex-wrap: wrap; }
.var-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  padding: 9px 14px;
  font-weight: 600;
}
.var-btn.selected { border-color: var(--orange); color: var(--orange); background: #fff5f2; }
.qty-row { display: flex; align-items: center; gap: 0; }
.qty-row button {
  width: 36px; height: 36px;
  border: 1px solid var(--line); background: #fff;
  font-size: 18px;
}
.qty-row button:first-child { border-radius: 6px 0 0 6px; }
.qty-row button:last-of-type { border-radius: 0 6px 6px 0; }
#qtyVal {
  width: 52px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  font-weight: 700;
}
.qty-note { color: var(--muted); font-size: 13px; margin-left: 8px; }
.total-row { font-size: 16px; }
.buy-actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 10px 0; }
.buy-actions .btn { flex: 1; min-width: 160px; }
.buy-note { color: var(--muted); font-size: 13px; margin: 0; }

/* ---------- desc / specs ---------- */
.desc-text { white-space: pre-wrap; margin: 0; }
.spec-table { border-collapse: collapse; width: 100%; }
.spec-table td { padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec-table td:first-child { color: var(--muted); width: 38%; }

/* ---------- reviews ---------- */
.review-summary { margin-bottom: 12px; }
.dist-row { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); margin: 3px 0; }
.dist-bar { flex: 1; height: 8px; background: #eee; border-radius: 4px; overflow: hidden; }
.dist-bar i { display: block; height: 100%; background: var(--gold); }
.review-item { border-top: 1px solid var(--line); padding: 12px 0; }
.review-item:first-child { border-top: 0; }
.review-item .who { font-weight: 700; }
.review-item .when { color: var(--muted); font-size: 13px; margin-left: 6px; }
.review-item p { margin: 4px 0; }
.seller-reply {
  background: #fff5f2;
  border-left: 3px solid var(--orange);
  padding: 8px 10px;
  margin-top: 8px;
  font-size: 14px;
}
.empty { color: var(--muted); }
.review-form, .lookup-form { border-top: 1px solid var(--line); margin-top: 14px; padding-top: 14px; }
.review-form h3 { margin: 0 0 4px; }
.form-note { color: var(--muted); font-size: 13px; margin: 0 0 10px; }
.review-form label, .lookup-form label, #chatForm label, #checkoutForm label { display: block; margin-bottom: 10px; font-weight: 600; }
.review-form input, .review-form textarea,
.lookup-form input, #chatForm input, #chatForm textarea,
#checkoutForm input[type="text"], #checkoutForm textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-weight: 400;
}
.stars-input { display: flex; gap: 2px; margin: 4px 0 10px; }
.stars-input button {
  border: 0; background: transparent;
  font-size: 28px; color: #ddd; padding: 0 2px;
}
.stars-input button.lit { color: var(--gold); }
.form-error { color: #c62828; background: #fdecea; border-radius: 6px; padding: 8px 10px; }
.form-error a { font-weight: 700; }

/* ---------- other products ---------- */
.other-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
.other-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  text-decoration: none;
  color: var(--text);
}
.other-card:hover { border-color: var(--orange); }
.other-dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; margin-right: 6px; }
.other-card span { display: block; color: var(--muted); font-size: 13px; }
.other-card em { display: block; font-style: normal; color: var(--orange); font-weight: 700; margin-top: 6px; }

/* ---------- lookup ---------- */
.lookup-form { display: flex; gap: 8px; flex-wrap: wrap; }
.lookup-form input { flex: 1; min-width: 200px; margin-top: 0; }
.order-card { border: 1px solid var(--line); border-radius: 8px; padding: 12px; margin-top: 12px; }
.order-card h3 { margin: 0 0 6px; }
.order-card p { margin: 3px 0; font-size: 14px; }
.badge-status {
  display: inline-block;
  font-size: 12px; font-weight: 800;
  padding: 2px 10px; border-radius: 20px;
  background: #e8f5e9; color: #2e7d32;
}
.badge-status.pending { background: #fff8e1; color: #e65100; }
.badge-status.cancelled { background: #fdecea; color: #c62828; }
.tracking { display: flex; gap: 0; margin: 12px 0; flex-wrap: wrap; }
.track-step {
  flex: 1; min-width: 120px;
  text-align: center;
  font-size: 13px;
  padding: 8px 4px;
  border-top: 3px solid #ddd;
  color: var(--muted);
}
.track-step.done { border-color: #2e7d32; color: #2e7d32; font-weight: 700; }
.track-step .dot { display: block; font-size: 18px; }

/* ---------- panels / modal / drawer ---------- */
.panel {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0,0,0,.5);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 16px;
  overflow-y: auto;
}
.panel-box {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  width: 100%;
  max-width: 480px;
  margin-top: 8vh;
}
.panel-box.wide { max-width: 560px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.panel-head .icon-btn { color: var(--text); }
.cart-item {
  display: flex; justify-content: space-between; align-items: center;
  gap: 8px; border: 1px solid var(--line); border-radius: 8px;
  padding: 10px; margin-bottom: 8px;
}
.cart-item p { margin: 0; font-size: 14px; }
.co-summary { background: #fff5f2; border-radius: 8px; padding: 10px 12px; }
.check-row { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.gift-cards { display: grid; gap: 8px; margin: 8px 0 12px; }
.gift-card {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px;
}
.gift-card p { margin: 0; font-size: 14px; }
.co-line { font-size: 14px; }
.success-check {
  width: 56px; height: 56px;
  margin: 0 auto 8px;
  background: #e8f5e9; color: #2e7d32;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 30px; font-weight: 800;
}
#coSuccessView { text-align: center; }
#coSuccessView .buy-actions { justify-content: center; }

/* ---------- toast / footer ---------- */
.toast {
  position: fixed;
  left: 50%; bottom: 24px;
  transform: translateX(-50%);
  z-index: 200;
  background: #222; color: #fff;
  padding: 10px 18px;
  border-radius: 24px;
  font-size: 14px;
  max-width: calc(100vw - 32px);
  text-align: center;
}
.footer { text-align: center; color: var(--muted); font-size: 13px; padding: 16px 0 24px; }
.footer p { margin: 3px 0; }

@media (min-width: 900px) {
  .product { grid-template-columns: minmax(0, 480px) 1fr; align-items: start; }
  .buy-box h2 { font-size: 20px; }
}

/* hidden must win over author display rules (.panel{display:flex}, .gift-cards{display:grid});
   otherwise the browser's default [hidden]{display:none} is overridden and hidden panels stay visible. */
[hidden] { display: none !important; }