/* ==========================================================================
   产品详情页样式库（全产品线，配色随 body[data-product-line] / tokens）
   维护：改本文件后运行 python tools/generate_site.py
   依赖：css/tokens.css（--accent、--accent-2、--surface 等）
   ========================================================================== */

:root {
  --pd-media-size: 320px;
}

/* —— 页面外壳 —— */
.product-detail {
  padding: 2rem 0 3rem;
}

.product-detail__hero {
  display: grid;
  grid-template-columns: minmax(0, var(--pd-media-size)) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  padding: 1.75rem;
  background: var(--surface);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-left: 4px solid var(--accent);
}

.product-detail__hero--summary-only {
  grid-template-columns: 1fr;
}

.product-detail__pill {
  display: inline-block;
  font-family: var(--font-tagline);
  font-size: 0.75rem;
  font-style: italic;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  margin: 0 0 0.75rem;
  background: var(--accent);
  color: var(--btn-on-accent, #fff);
}

.product-detail__summary h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.product-detail__intro {
  font-size: 1.05rem;
  line-height: 1.6;
  margin: 0;
  color: var(--text);
}

/* —— 主图（统一白底方框 + contain）—— */
.product-detail__media,
.product-detail .product-detail-legacy .product-series__media {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--pd-media-size);
  height: var(--pd-media-size);
  max-width: 100%;
  flex-shrink: 0;
  box-sizing: border-box;
  padding: 0.65rem;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.product-detail__media img,
.product-detail .product-detail-legacy .product-series__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: var(--pd-media-size);
  max-height: var(--pd-media-size);
  margin: 0 auto;
  object-fit: contain;
  object-position: center;
  border: none;
  background: transparent;
}

.product-detail > .container > .product-detail__detail:first-child,
.product-detail > .container > .product-detail__detail {
  margin-top: 0;
}

.product-detail__hero + .product-detail__detail {
  margin-top: 2rem;
}

/* —— 详情正文容器 —— */
.product-detail .product-detail-legacy {
  width: 100%;
  max-width: none;
  margin-inline: 0;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--text);
}

/* Prop 65 */
.product-detail .product-detail-legacy .product-prop65--collapsible {
  margin: 0 0 2rem;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: var(--surface);
}

.product-detail .product-prop65__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  padding: 1rem 1.15rem;
  border: none;
  background: transparent;
  font: inherit;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  color: var(--text);
}

.product-detail .product-prop65__toggle:hover .product-prop65__label {
  color: var(--accent);
}

.product-detail .product-prop65__chevron {
  flex-shrink: 0;
  width: 0.55rem;
  height: 0.55rem;
  border-right: 2.5px solid var(--accent);
  border-bottom: 2.5px solid var(--accent);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.product-detail .product-prop65.is-open .product-prop65__chevron {
  transform: rotate(-135deg);
}

.product-detail .product-prop65__panel {
  padding: 0 1.15rem 1rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  font-size: 0.95rem;
  line-height: 1.5;
}

.product-detail .product-prop65__panel[hidden] {
  display: none;
}

.product-detail .product-prop65__panel a {
  color: var(--accent-2, var(--accent));
}

/* —— 多型号系列块（oxy / air-propane 等）—— */
.product-detail .product-detail-legacy .product-series {
  display: grid;
  grid-template-columns: minmax(0, var(--pd-media-size)) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  margin: 0 0 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.product-detail .product-detail-legacy .product-series:last-child {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0;
}

.product-detail .product-detail-legacy .product-series__body {
  min-width: 0;
}

.product-detail .product-detail-legacy .product-series__body > img {
  display: block;
  width: var(--pd-media-size);
  max-width: 100%;
  height: auto;
  margin: 1.25rem 0;
  object-fit: contain;
  border: none;
}

.product-detail .product-detail-legacy .product-series__body strong {
  font-size: 1.15rem;
}

/* —— HVAC 式内容块 —— */
.product-detail .product-detail-legacy .product-detail-sections {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.product-detail .product-detail-legacy .product-detail-section {
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.product-detail .product-detail-legacy .product-detail-section__title,
.product-detail .product-detail-legacy .product-detail-section h2,
.product-detail .product-detail-legacy .product-detail-section h3,
.product-detail .product-detail-legacy .product-detail-section h4,
.product-detail .product-detail-legacy .product-series__body > h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--accent);
}

.product-detail .product-detail-legacy .product-detail-section p,
.product-detail .product-detail-legacy .product-series__body p {
  margin: 0 0 0.85rem;
  line-height: 1.65;
}

.product-detail .product-detail-legacy .product-detail-list,
.product-detail .product-detail-legacy .product-series__body ul {
  margin: 0.5rem 0 1.25rem;
  padding-left: 1.25rem;
  line-height: 1.65;
}

.product-detail .product-detail-legacy .product-detail-list li {
  margin-bottom: 0.35rem;
}

/* —— 表格 —— */
.product-detail .product-detail-legacy .product-detail-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.75rem;
  font-size: 0.95rem;
}

.product-detail .product-detail-legacy .product-detail-table td,
.product-detail .product-detail-legacy .product-detail-table th {
  padding: 0.5rem 0.65rem;
  vertical-align: top;
  text-align: left;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.product-detail .product-detail-legacy .product-detail-table tfoot td {
  background: var(--surface);
  font-weight: 600;
}

.product-detail .product-detail-legacy .product-detail-spec-table td:first-child {
  width: 36%;
  max-width: 220px;
  background: var(--accent);
  color: var(--btn-on-accent, #fff);
  font-weight: 600;
}

.product-detail .product-detail-legacy .product-detail-spec-table td:not(:first-child) {
  background: var(--surface);
}

.product-detail .product-detail-legacy .product-detail-table-caption {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.88rem;
  color: var(--muted);
}

/* —— 下载区 —— */
.product-detail__downloads {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 2px solid var(--accent);
}

.product-detail__downloads h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--accent);
}

.product-detail__doc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.product-detail__doc-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.product-detail__doc-link {
  font-weight: 600;
  color: var(--accent-2, var(--accent));
}

.product-detail__doc-link:hover {
  text-decoration: underline;
}

.product-detail__doc-size {
  font-size: 0.9rem;
  color: var(--muted);
  white-space: nowrap;
}

@media (max-width: 768px) {
  .product-detail__hero,
  .product-detail .product-detail-legacy .product-series {
    grid-template-columns: 1fr;
  }

  .product-detail__media {
    width: 100%;
    margin-inline: auto;
  }

  .product-detail__media,
  .product-detail .product-detail-legacy .product-series__media {
    width: min(var(--pd-media-size), 100%);
    height: min(var(--pd-media-size), 72vw);
    margin-inline: auto;
  }

  .product-detail__media img,
  .product-detail .product-detail-legacy .product-series__media img {
    max-width: 100%;
    max-height: 100%;
  }
}