/*!
 * product.css — thành phần riêng cho trang sản phẩm + trang danh mục san-pham.html.
 * Nạp SAU base.css và content.css.
 */

/* ═══════════ HERO SẢN PHẨM ═══════════ */
.p-hero { position:relative; overflow:hidden; border-radius:28px;
  background:var(--card); border:1px solid var(--bd);
  display:grid; grid-template-columns:.85fr 1.15fr; margin:6px 0 34px; }
.p-hero-media { position:relative; display:grid; place-items:center; padding:34px; min-height:340px;
  background:radial-gradient(circle at 50% 40%, rgba(34,211,238,.14), transparent 68%); }
.p-hero-media img.p-shot { max-width:100%; max-height:300px; width:auto; height:auto;
  filter:drop-shadow(0 20px 34px rgba(0,0,0,.55)); }
.p-brandmark { position:absolute; top:16px; left:18px; display:inline-flex; align-items:center; gap:7px;
  padding:6px 13px; border-radius:20px; background:rgba(3,7,18,.6); border:1px solid var(--bd1);
  backdrop-filter:blur(8px); font-family:'Space Grotesk',sans-serif; font-weight:700;
  font-size:13px; letter-spacing:.4px; color:var(--text1); }
.p-brandmark img { height:17px; width:auto; display:block; }
.p-brandmark .dot { width:7px; height:7px; border-radius:50%; background:var(--cyan); box-shadow:0 0 8px var(--cyan); }
.p-hero-info { padding:32px 34px 30px; border-left:1px solid var(--bd); }
.p-hero-info h1 { font-size:33px; margin:10px 0 12px; }
.p-hero-info .lead { font-size:15.5px; margin-bottom:20px; }

/* dải chỉ số nổi bật */
.p-stats { display:grid; grid-template-columns:repeat(4,1fr); gap:11px; margin:0 0 22px; }
.p-stat { padding:13px 14px; border-radius:15px; background:var(--card2); border:1px solid var(--bd1); }
.p-stat b { display:block; font-family:'Space Grotesk',sans-serif; font-size:21px; line-height:1.1;
  background:linear-gradient(120deg,#22D3EE,#4ADE80); -webkit-background-clip:text; background-clip:text; color:transparent; }
.p-stat span { display:block; font-size:11px; color:var(--text4); margin-top:5px; line-height:1.35; }
.p-actions { display:flex; flex-wrap:wrap; gap:12px; }
.btn-ghost { display:inline-block; padding:12px 24px; border-radius:24px; font-size:14px; font-weight:600;
  color:var(--text2); background:var(--card2); border:1px solid var(--bd2); text-decoration:none;
  transition:border-color .3s ease, color .3s ease; }
.btn-ghost:hover { border-color:rgba(34,211,238,.5); color:var(--text1); }

/* ═══════════ ĐIỂM NHẤN ═══════════ */
.p-highlights { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin:0 0 34px; }
.p-hl { padding:20px 20px 22px; border-radius:20px; background:var(--card); border:1px solid var(--bd); }
.p-hl .ic { width:40px; height:40px; border-radius:13px; display:grid; place-items:center;
  background:var(--card2); border:1px solid var(--bd1); color:var(--cyan); margin-bottom:13px; }
.p-hl .ic svg { width:20px; height:20px; }
.p-hl b { display:block; font-size:15px; color:var(--text1); margin-bottom:7px; }
.p-hl p { margin:0; font-size:13.3px; line-height:1.6; color:var(--text3); }

/* ═══════════ THÔNG SỐ THEO NHÓM ═══════════ */
.p-specgrid { display:grid; grid-template-columns:1fr 1fr; gap:18px; margin:18px 0 32px; }
.p-specgroup { border-radius:20px; background:var(--card); border:1px solid var(--bd); padding:20px 22px; }
.p-specgroup h3 { display:flex; align-items:center; gap:9px; font-size:15px; font-weight:700;
  color:var(--text1); margin:0 0 13px; }
.p-specgroup h3 svg { width:18px; height:18px; stroke:var(--cyan); fill:none; stroke-width:1.7;
  stroke-linecap:round; stroke-linejoin:round; flex:none; }
.p-specgroup dl { margin:0; }
.p-specgroup dl > div { display:flex; justify-content:space-between; align-items:baseline; gap:16px;
  padding:9px 0; border-bottom:1px solid var(--bd); }
.p-specgroup dl > div:last-child { border-bottom:none; padding-bottom:0; }
.p-specgroup dt { font-size:13.3px; color:var(--text3); }
.p-specgroup dd { margin:0; font-size:13.8px; font-weight:600; color:var(--text1); text-align:right; }
.p-specgroup dd em { font-style:normal; color:var(--text4); font-weight:400; font-size:12.5px; }
.p-specgroup .hi { color:var(--green); }

/* ═══════════ BẢNG SO SÁNH ═══════════ */
.p-compare { margin:14px 0 30px; }
.p-compare table { width:100%; border-collapse:collapse; font-size:13.6px; }
.p-compare th, .p-compare td { padding:11px 14px; border:1px solid var(--bd); text-align:left; color:var(--text2); }
.p-compare thead th { background:var(--card2); color:var(--text1); font-weight:700; white-space:nowrap; }
.p-compare tbody th { font-weight:500; color:var(--text3); }
.p-compare .is-this { background:rgba(34,211,238,.09) !important; border-color:rgba(34,211,238,.32) !important; color:var(--text1); }
.p-compare thead .is-this { color:#7BE5FF; }
.p-compare a { color:var(--cyan); text-decoration:none; font-weight:600; }

/* ═══════════ ẢNH THỰC TẾ LẮP ĐẶT ═══════════ */
.p-proof { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin:16px 0 32px; }
.p-proof figure { margin:0; border-radius:18px; overflow:hidden; background:var(--card); border:1px solid var(--bd); }
.p-proof img { display:block; width:100%; height:210px; object-fit:cover; }
.p-proof figcaption { padding:11px 14px; font-size:12.4px; line-height:1.5; color:var(--text4); }

/* ═══════════ THANH LỌC / TÌM (san-pham.html) ═══════════ */
.cat-bar { position:sticky; top:70px; z-index:20; margin:22px 0 26px; padding:18px 20px;
  border-radius:22px; background:rgba(8,17,30,.82); backdrop-filter:blur(16px); border:1px solid var(--bd1); }
.cat-search { position:relative; margin-bottom:14px; }
.cat-search input { width:100%; padding:13px 16px 13px 44px; border-radius:15px; font-size:14.5px;
  color:var(--text1); background:var(--card2); border:1px solid var(--bd2); font-family:inherit; outline:none;
  transition:border-color .25s ease; }
.cat-search input:focus { border-color:rgba(34,211,238,.55); }
.cat-search input::placeholder { color:var(--text4); }
.cat-search svg { position:absolute; left:15px; top:50%; transform:translateY(-50%);
  width:18px; height:18px; stroke:var(--text4); fill:none; stroke-width:1.9; pointer-events:none; }
.cat-row { display:flex; flex-wrap:wrap; align-items:center; gap:8px; margin-bottom:9px; }
.cat-row:last-of-type { margin-bottom:0; }
.cat-row > span { font-size:12.5px; color:var(--text4); margin-right:4px; min-width:82px; }
.chip { cursor:pointer; padding:7px 15px; border-radius:20px; font-size:13px; font-weight:600;
  color:var(--text3); background:var(--card2); border:1px solid var(--bd2); font-family:inherit;
  transition:all .22s ease; }
.chip:hover { color:var(--text1); border-color:var(--bd2); }
.chip.on { color:#021018; background:linear-gradient(120deg,#22D3EE,#4ADE80); border-color:transparent; }
.cat-count { margin-top:12px; font-size:12.5px; color:var(--text4); }
.cat-count b { color:var(--text1); }
.cat-empty { padding:44px 20px; text-align:center; border-radius:20px;
  background:var(--card); border:1px dashed var(--bd2); color:var(--text3); font-size:14.5px; }
.cat-empty button { margin-top:14px; }

/* thẻ sản phẩm trong danh mục: thêm dải chỉ số nhỏ */
.card .p-mini { display:flex; flex-wrap:wrap; gap:6px; margin-top:11px; }
.card .p-mini span { padding:4px 9px; border-radius:8px; font-size:11px; font-weight:600;
  color:var(--text3); background:var(--card2); border:1px solid var(--bd); }

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width:900px) {
  .p-hero { grid-template-columns:1fr; }
  .p-hero-info { border-left:none; border-top:1px solid var(--bd); padding:26px 22px; }
  .p-hero-media { min-height:260px; padding:26px; }
  .p-hero-info h1 { font-size:27px; }
  .p-stats { grid-template-columns:1fr 1fr; }
  .p-highlights { grid-template-columns:1fr; }
  .p-specgrid { grid-template-columns:1fr; }
  .p-proof { grid-template-columns:1fr 1fr; }
  .cat-bar { top:64px; padding:15px 16px; }
  .cat-row > span { min-width:100%; margin-bottom:2px; }
}
@media (max-width:560px) {
  .p-proof { grid-template-columns:1fr; }
  .p-stats { grid-template-columns:1fr 1fr; }
}