/* ============================================================
   FGD WHEELS — 商品详情页 (product.html)
   参考 American Force 详情页布局：紧凑左图 + 右侧下拉选配
   ============================================================ */

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap {
  padding-top: 90px;
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 13px;
  color: var(--text-3);
}
.breadcrumb a { color: var(--text-3); transition: color 0.25s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--text-3); }
.breadcrumb .current { color: var(--text-2); font-weight: 500; }

/* ---------- 产品主区 ---------- */
.pdp-hero { padding: 44px 0 56px; }
.pdp-grid {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr; /* 图片更窄，信息更宽 */
  gap: 44px;
  align-items: start;
}

/* 左：图片（单一主图） */
.pdp-gallery { position: sticky; top: 100px; }
.pdp-main-img {
  position: relative;
  width: 100%;
  max-width: 520px;
  aspect-ratio: 1 / 1;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pdp-main-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 28px;
  transition: opacity 0.2s;
}

/* 右：信息 */
.pdp-series {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.pdp-info h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 4vw, 52px);
  text-transform: uppercase;
  line-height: 1.0;
  margin: 10px 0 8px;
}
.pdp-sub {
  font-size: 15px;
  color: var(--text-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.pdp-trust {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.trust-chip {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid rgba(201,162,75,0.4);
  padding: 5px 10px;
  border-radius: 2px;
}
.pdp-lead {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 22px;
}

/* 下拉选配（AF 风格：紧凑两列下拉框） */
.pdp-selects {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 16px;
  margin-bottom: 26px;
}
.sel-group { display: flex; flex-direction: column; gap: 6px; }
.sel-group label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
}
.sel-group select,
.sel-group input {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  box-sizing: border-box;
  background: var(--bg-3);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 11px 14px;
  font-size: 14px;
  font-family: var(--font-body);
  transition: border-color 0.25s, background 0.25s;
}
.sel-group select {
  cursor: pointer;
  background: var(--bg-3) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' stroke='%23b8b8c0' stroke-width='2' fill='none' stroke-linecap='round'/></svg>") no-repeat right 14px center;
  padding-right: 38px;
}
.sel-group input {
  cursor: text;
}
.sel-group input::placeholder {
  color: var(--text-3);
  opacity: 0.7;
}
.sel-group select:hover,
.sel-group input:hover { border-color: var(--border-2); }
.sel-group select:focus,
.sel-group input:focus {
  outline: none;
  border-color: var(--accent);
  background-color: var(--surface);
}
.sel-group select option { background: var(--bg-3); color: var(--text); }
.pdp-input-hint {
  margin-top: -14px;
  color: var(--text-3);
  font-style: italic;
}

.pdp-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.pdp-note {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 14px;
  line-height: 1.5;
}

/* ---------- 通用 section ---------- */
.pdp-section { padding: 60px 0; }

/* ---------- 规格表（紧凑两列表格） ---------- */
.pdp-specs { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.spec-table-wrap { max-width: 900px; margin: 0 auto; }
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.spec-table th, .spec-table td {
  padding: 13px 20px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }
.spec-table th {
  width: 180px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
  white-space: nowrap;
}
.spec-table td { color: var(--text-2); line-height: 1.55; }
.spec-hint {
  color: var(--text-3);
  font-size: 13px;
  margin-top: 16px;
  text-align: center;
}

/* ---------- 流程 + 工艺（紧凑） ---------- */
.pdp-process .section-header { margin-bottom: 40px; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 44px;
}
.step {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
}
.step-num {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.85;
  line-height: 1;
  margin-bottom: 12px;
}
.step h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 8px;
  line-height: 1.2;
}
.step p { font-size: 12px; color: var(--text-2); line-height: 1.5; }

/* 工艺条 */
.craft-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  max-width: 900px;
  margin: 0 auto;
}
.craft-step {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 11px 14px;
  font-size: 13px;
  color: var(--text-2);
}
.craft-step span {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  min-width: 22px;
}
.craft-final {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 24px;
}
.craft-approval { font-size: 14px; font-weight: 600; color: #4ade80; }
.craft-ship {
  font-size: 13px;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------- 相关推荐 You May Also Like ---------- */
.pdp-related { background: var(--bg-2); border-top: 1px solid var(--border); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.related-card {
  display: block;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 28px rgba(0,0,0,0.35);
}
.related-card .rc-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}
.related-card .rc-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 18px;
  transition: transform 0.35s;
}
.related-card:hover .rc-img img { transform: scale(1.05); }
.related-card .rc-body {
  padding: 14px 16px 16px;
}
.related-card .rc-series {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.related-card .rc-name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text);
  margin: 4px 0 8px;
  line-height: 1.15;
}
.related-card .rc-meta {
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.02em;
}
.related-card .rc-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .pdp-grid { grid-template-columns: 1fr; }
  .pdp-gallery { position: static; }
  .pdp-main-img { max-width: 100%; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .craft-flow { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .pdp-selects { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .craft-flow { grid-template-columns: 1fr; }
  .pdp-cta { flex-direction: column; }
  .pdp-cta .btn { width: 100%; justify-content: center; }
  .spec-table th { width: 120px; white-space: normal; word-break: break-word; }
  .spec-table th, .spec-table td { padding: 12px 12px; font-size: 13px; }
  .breadcrumb { padding: 12px 20px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}