/* ============================================================
   Product Detail Page — product-detail.css
   Matches original v8 product-detail-standard.css layout
   ============================================================ */
.product-detail-page .page-header { background:var(--navy); padding:80px 0 40px; color:#fff; text-align:center; }
.product-detail-page .page-header h1 { font-size:clamp(28px,3.5vw,42px); font-weight:600; color:#fff; margin-bottom:12px; }
.product-detail-page .page-header .breadcrumb { display:inline-flex; gap:6px; align-items:center; color:rgba(255,255,255,.5); font-size:12px; }
.product-detail-page .page-header .breadcrumb a { color:rgba(255,255,255,.7); text-decoration:none; }
.product-detail-page .product-detail-meta { display:flex; flex-wrap:wrap; gap:8px; justify-content:flex-start; margin-top:12px; }

/* meta tags */
.meta-tag { display:inline-flex; align-items:center; padding:4px 10px; border-radius:20px; font-size:11px; font-weight:600; line-height:1.4; }
.meta-tag.region { background:rgba(36,95,123,.10); color:#245f7b; border:1px solid rgba(36,95,123,.18); }
.meta-tag.performance { background:rgba(201,163,92,.14); color:#7a5f24; border:1px solid rgba(201,163,92,.28); }
.product-detail-page .page-header .meta-tag.region { background:rgba(255,255,255,.10); color:rgba(255,255,255,.85); border-color:rgba(255,255,255,.2); }
.product-detail-page .page-header .meta-tag.performance { background:rgba(201,163,92,.2); color:#f0d890; border-color:rgba(201,163,92,.35); }

/* product-detail hero layout */
.product-detail-hero { display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:start; }
.product-detail-img { border-radius:var(--radius-lg); overflow:hidden; }
.product-detail-img img { width:100%; height:auto; display:block; border-radius:var(--radius-lg); }
.product-detail-info h2 { font-size:clamp(26px,3vw,36px); font-weight:600; color:var(--navy); margin-bottom:8px; line-height:1.2; }

/* product subtitle */
.product-detail-subtitle { font-size:18px; color:var(--steel,#4a6278); font-weight:600; margin-bottom:16px; line-height:1.4; }

/* product image placeholder */
.product-img-placeholder { aspect-ratio:1; background:var(--bg); display:flex; align-items:center; justify-content:center; border-radius:var(--radius-lg,14px); color:var(--border,#d4dde2); }

/* price box */
.price-box { margin:20px 0; border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; }
.price-row { display:flex; justify-content:space-between; padding:10px 16px; font-size:14px; border-bottom:1px solid var(--border); }
.price-row:last-child { border-bottom:none; }
.price-row span { color:var(--text-mid); }
.price-row strong { color:var(--navy); font-weight:600; }

/* CTA group */
.dual-cta { display:flex; flex-direction:column; gap:10px; margin-top:20px; }
.dual-cta .btn { justify-content:center; text-align:center; }

/* applications bar */
.product-applications-bar { display:flex; flex-wrap:wrap; gap:10px; align-items:center; justify-content:center; margin-top:40px; padding:20px; background:var(--bg); border-radius:12px; }
.product-applications-label { font-size:13px; font-weight:600; color:var(--text-mid); letter-spacing:1px; text-transform:uppercase; align-self:center; margin-right:8px; }

/* detail tabs */
.detail-tabs-wrap { margin-top:48px; }
.detail-tabs { display:flex; gap:4px; border-bottom:2px solid var(--border); overflow-x:auto; -webkit-overflow-scrolling:touch; scrollbar-width:none; }
.detail-tabs::-webkit-scrollbar { display:none; }
.detail-tab { padding:10px 20px; font-size:13px; font-weight:500; color:var(--text-light); border-bottom:2px solid transparent; margin-bottom:-2px; transition:all .2s; white-space:nowrap; flex-shrink:0; cursor:pointer; background:none; border-top:none; border-left:none; border-right:none; }
.detail-tab:hover { color:var(--navy); }
.detail-tab.active { color:var(--navy); border-bottom-color:var(--gold); font-weight:600; }
.detail-tab-content { display:none; padding:40px 0; }
.detail-tab-content.active { display:block; }
.detail-section { max-width:900px; }
.detail-section h3 { font-size:22px; font-weight:600; color:var(--navy); margin:0 0 16px; }
.detail-section p { color:var(--text-mid); line-height:1.7; margin-bottom:16px; }

/* feature list */
.detail-feature-list { margin:16px 0; padding-left:20px; }
.detail-feature-list li { color:var(--text-mid); font-size:14px; line-height:1.7; margin-bottom:6px; }
.detail-feature-list li strong { color:var(--navy); }

/* param table */
.param-table { width:100%; border-collapse:collapse; margin-top:16px; }
.param-table th,.param-table td { padding:12px 16px; text-align:left; border-bottom:1px solid var(--border); font-size:13px; }
.param-table thead th { background:var(--bg); font-weight:700; color:var(--navy); font-size:12px; letter-spacing:.5px; text-transform:uppercase; }
.param-val { font-weight:600; color:var(--navy); }
.param-tag { display:inline-block; padding:2px 8px; border-radius:4px; font-size:10px; font-weight:700; }
.tag-hurricane { background:rgba(220,50,47,.12); color:#b71c1c; }
.tag-energy { background:rgba(27,94,32,.10); color:#1b5e20; }
.tag-acoustic { background:rgba(36,95,123,.12); color:#245f7b; }

/* spec table */
.spec-table { width:100%; border-collapse:collapse; margin-top:16px; font-size:13px; }
.spec-table th,.spec-table td { padding:11px 14px; border-bottom:1px solid var(--border); text-align:left; vertical-align:top; }
.spec-table th { width:42%; background:var(--bg); color:var(--navy); font-weight:700; font-size:11px; letter-spacing:.04em; text-transform:uppercase; }
.spec-table td { color:var(--text-mid); }
.spec-table tr:last-child th,.spec-table tr:last-child td { border-bottom:none; }

/* audience grid / cards */
.audience-grid { display:grid; gap:20px; margin-top:24px; }
.audience-card { padding:24px; background:var(--bg); border-radius:var(--radius); border:1px solid var(--border); }
.audience-card h3 { font-size:16px; font-weight:600; color:var(--navy); margin:0 0 8px; }
.audience-card .desc { font-size:13px; color:var(--text-mid); margin:0 0 12px; }
.audience-features { padding-left:18px; margin:0; }
.audience-features li { font-size:13px; color:var(--text-mid); line-height:1.65; margin-bottom:4px; }
.p-24 { padding:24px !important; }
.gold-fs-18 { color:var(--gold-dark,#9b7835) !important; font-size:18px !important; font-weight:600 !important; }
.mt-12 { margin-top:12px !important; }

/* why-choose-grid */
.why-choose-grid { margin-top:40px; padding:28px; background:var(--bg); border-radius:14px; border:1px solid var(--border); }
.wc-heading { font-size:16px; font-weight:700; color:var(--navy); margin:0 0 20px; }
.wc-cards { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; }
.wc-card { padding:20px; background:#fff; border:1px solid var(--border); border-radius:10px; }
.wc-num { width:32px; height:32px; border-radius:50%; background:var(--navy); color:#fff; font-size:14px; font-weight:700; display:flex; align-items:center; justify-content:center; margin-bottom:12px; }
.wc-card h5 { font-size:14px; font-weight:600; color:var(--navy); margin:0 0 8px; }
.wc-card p { font-size:13px; color:var(--text-mid); line-height:1.6; margin:0; }

/* option grid */
.option-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-top:32px; }
.option-card { padding:20px; background:var(--white); border:1px solid var(--border); border-radius:var(--radius); }
.feature-label { font-size:13px; font-weight:700; color:var(--navy); margin:0 0 12px; display:block; }
.color-swatch { width:24px; height:24px; border-radius:50%; border:2px solid transparent; flex-shrink:0; }

/* gallery grid */
.gallery-header { margin-bottom:24px; }
.gallery-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.gallery-card { border-radius:var(--radius); overflow:hidden; border:1px solid var(--border); background:var(--white); }
.gallery-card-img { aspect-ratio:4/3; overflow:hidden; background:var(--bg); }
.gallery-card-img img { width:100%; height:100%; object-fit:cover; display:block; }
.gallery-card-text { padding:12px 14px; }
.gallery-card-text h4 { font-size:13px; font-weight:600; color:var(--navy); margin:0 0 4px; }
.gallery-card-text p { font-size:12px; color:var(--text-mid); line-height:1.5; margin:0; }

/* doc actions / inquiry */
.product-doc-actions { display:flex; gap:12px; flex-wrap:wrap; margin-top:40px; }
.product-inquiry-panel { max-width:700px; margin:0 auto; }
.product-inquiry-submit { min-width:280px; justify-content:center; }

/* grid-3 helper for related projects */
.grid-3 { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; }

/* Responsive */
@media(max-width:900px) {
  .product-detail-hero { grid-template-columns:1fr; gap:32px; }
  .audience-grid[style*="repeat(3"] { grid-template-columns:repeat(2,1fr) !important; }
  .option-grid { grid-template-columns:repeat(2,1fr); }
  .gallery-grid { grid-template-columns:repeat(2,1fr); }
  .wc-cards { grid-template-columns:repeat(2,1fr); }
  .grid-3 { grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media(max-width:600px) {
  .product-detail-page .page-header { padding:64px 0 32px; }
  .audience-grid[style*="repeat(3"] { grid-template-columns:1fr !important; }
  .option-grid { grid-template-columns:1fr; }
  .gallery-grid { grid-template-columns:1fr; }
  .wc-cards { grid-template-columns:1fr; }
  .grid-3 { grid-template-columns:1fr; }
  .dual-cta .btn { width:100%; }
  .detail-tab { padding:10px 14px; font-size:12px; }
  .spec-table th { width:48%; }
  .why-choose-grid { padding:20px 16px; }
  .product-detail-subtitle { font-size:15px; }
}