/* Trang chi tiết sản phẩm (single-tct_san_pham.php). Thẻ sản phẩm liên quan dùng listing.css. */
:root { --tct-ease: cubic-bezier(.22,.61,.36,1); --tct-pd-sticky: 72px; }
/* Theme cha đặt overflow-x:hidden cho html/body → làm hỏng position:sticky.
 * "clip" cắt tràn ngang y hệt nhưng không tạo vùng cuộn riêng. */
:root:has(body.single-tct_san_pham), body.single-tct_san_pham { overflow: visible; overflow-x: clip; }
.tct-pd { background: #fff; }
.tct-pd [id^="tct-pd-"] { scroll-margin-top: calc(var(--tct-pd-sticky) + 64px); }

/* Breadcrumb */
.tct-pd-crumb { background: var(--vs-bg-light); border-bottom: 1px solid var(--vs-border); font-size: 13.5px; }
.tct-pd-crumb .vs-container { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; padding-block: 12px; }
.tct-pd-crumb a { color: #5a6470; text-decoration: none; }
.tct-pd-crumb a:hover { color: var(--vs-accent); }
.tct-pd-crumb span[aria-hidden] { color: #b3bcc6; }
.tct-pd-crumb [aria-current] { color: var(--vs-primary); font-weight: 600; }

/* ===== Khối đầu ===== */
.tct-pd-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 48px; padding-block: 36px 44px; align-items: start; }
.tct-pd-media { position: sticky; top: calc(var(--tct-pd-sticky) + 16px); }
.tct-pd-media__frame {
  position: relative; margin: 0; aspect-ratio: 1 / 1; display: flex; align-items: center; justify-content: center; overflow: hidden;
  border: 1px solid var(--vs-border); border-radius: 22px;
  background: radial-gradient(circle at 50% 42%, #fff 0%, #fff 42%, #f3f6f9 100%);
}
.tct-pd-media__frame::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: radial-gradient(rgba(15,53,87,.10) 1px, transparent 1px); background-size: 18px 18px;
  -webkit-mask-image: radial-gradient(circle at 50% 50%, transparent 38%, #000 75%); mask-image: radial-gradient(circle at 50% 50%, transparent 38%, #000 75%);
}
/* Ảnh gốc nhỏ (≈300px) — hiển thị gần kích thước thật để không bị vỡ. */
.tct-pd-media__img { position: relative; display: block; width: auto; height: auto; max-width: 78%; max-height: 78%; object-fit: contain; transition: transform .6s var(--tct-ease); }
.tct-pd-media__frame:hover .tct-pd-media__img { transform: scale(1.04); }
.tct-pd-media__noimg { color: #c3ccd5; }
.tct-pd-media__noimg svg { width: 72px; height: 72px; }
.tct-pd-media__tag {
  position: absolute; left: 16px; top: 16px; padding: 6px 12px; border-radius: 999px;
  background: var(--vs-primary); color: #fff; font-size: 12px; font-weight: 700; letter-spacing: .02em;
}
.tct-pd-assure { list-style: none; margin: 14px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.tct-pd-assure li { display: flex; align-items: center; gap: 10px; padding: 12px; border: 1px solid var(--vs-border); border-radius: 14px; background: #fff; }
.tct-pd-assure svg { flex: 0 0 auto; width: 22px; height: 22px; color: var(--vs-accent); }
.tct-pd-assure span { display: flex; flex-direction: column; font-size: 12px; color: #6b7681; line-height: 1.35; }
.tct-pd-assure strong { font-size: 13.5px; color: var(--vs-primary); }

.tct-pd-cat {
  display: inline-flex; align-items: center; padding: 5px 12px; border-radius: 999px; font-size: 12.5px; font-weight: 700;
  background: rgba(226,113,29,.1); color: var(--vs-accent); text-decoration: none; letter-spacing: .02em;
}
.tct-pd-cat:hover { background: var(--vs-accent); color: #fff; }
.tct-pd .tct-pd-title { margin: 12px 0 12px; font-size: clamp(26px, 3vw, 36px); line-height: 1.2; color: var(--vs-primary); }
.tct-pd-lead { margin: 0 0 20px; font-size: 15.5px; line-height: 1.7; color: #4f5b67; }

.tct-pd-facts { margin: 0 0 20px; border: 1px solid var(--vs-border); border-radius: 14px; overflow: hidden; }
.tct-pd-facts > div { display: grid; grid-template-columns: 150px 1fr; }
.tct-pd-facts > div + div { border-top: 1px solid var(--vs-border); }
.tct-pd-facts dt { padding: 11px 16px; background: var(--vs-bg-light); font-size: 13.5px; font-weight: 600; color: #5a6470; }
.tct-pd-facts dd { margin: 0; padding: 11px 16px; font-size: 14.5px; font-weight: 700; color: var(--vs-primary); }
.tct-pd-facts dd a { color: var(--vs-accent); text-decoration: none; }
.tct-pd-facts dd a:hover { text-decoration: underline; }

.tct-pd-price {
  display: flex; align-items: center; gap: 18px; margin-bottom: 18px; padding: 16px 18px; border-radius: 14px;
  background: linear-gradient(135deg, #fff7f0, #fff); border: 1px dashed rgba(226,113,29,.45);
}
.tct-pd-price > div { flex: 0 0 auto; }
.tct-pd-price__l { display: block; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: #8a6a52; }
.tct-pd-price__v { display: block; font-size: 24px; font-weight: 800; color: var(--vs-accent); line-height: 1.2; }
.tct-pd-price__n { margin: 0; padding-left: 18px; border-left: 1px solid rgba(226,113,29,.25); font-size: 13px; line-height: 1.55; color: #6b5a4c; }

.tct-pd-cta { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.tct-pd-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 58px; padding: 10px 16px; border-radius: 14px;
  font-weight: 800; font-size: 16px; text-decoration: none; color: #fff; transition: transform .2s, box-shadow .2s, background .2s;
}
.tct-pd-btn svg { flex: 0 0 auto; width: 22px; height: 22px; }
.tct-pd-btn span { display: flex; flex-direction: column; line-height: 1.2; }
.tct-pd-btn small { font-size: 12px; font-weight: 600; opacity: .85; }
.tct-pd-btn--call { background: var(--vs-accent); box-shadow: 0 12px 24px -14px rgba(226,113,29,.9); }
.tct-pd-btn--zalo { background: #0068ff; box-shadow: 0 12px 24px -14px rgba(0,104,255,.8); }
.tct-pd-btn--quote { grid-column: 1 / -1; min-height: 50px; background: #fff; color: var(--vs-primary); border: 1.5px solid var(--vs-primary); }
.tct-pd-btn:hover { transform: translateY(-2px); }
.tct-pd-btn--quote:hover { background: var(--vs-primary); color: #fff; }
.tct-pd-btn:focus-visible { outline: 3px solid var(--vs-primary); outline-offset: 3px; }

/* ===== Thanh mục lục dính ===== */
.tct-pd-tabs { position: sticky; top: var(--tct-pd-sticky); z-index: 20; background: rgba(255,255,255,.96); border-block: 1px solid var(--vs-border); backdrop-filter: blur(8px); }
.tct-pd-tabs .vs-container { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.tct-pd-tabs .vs-container::-webkit-scrollbar { display: none; }
.tct-pd-tabs a {
  flex: 0 0 auto; position: relative; padding: 15px 16px; font-size: 14.5px; font-weight: 700; color: #5a6470; text-decoration: none; white-space: nowrap;
}
.tct-pd-tabs a::after { content: ""; position: absolute; left: 16px; right: 16px; bottom: -1px; height: 3px; border-radius: 3px; background: var(--vs-accent); transform: scaleX(0); transition: transform .25s; }
.tct-pd-tabs a:hover { color: var(--vs-primary); }
.tct-pd-tabs a:hover::after, .tct-pd-tabs a.is-on::after { transform: scaleX(1); }
.tct-pd-tabs a.is-on { color: var(--vs-primary); }

/* ===== Nội dung + cột phải ===== */
.tct-pd-body { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 40px; padding-block: 40px 56px; align-items: start; }
.tct-pd-sec + .tct-pd-sec { margin-top: 44px; }
.tct-pd .tct-pd-h2 { position: relative; margin: 0 0 16px; padding-left: 14px; font-size: clamp(20px, 2.2vw, 25px); color: var(--vs-primary); }
.tct-pd .tct-pd-h2::before { content: ""; position: absolute; left: 0; top: .2em; bottom: .2em; width: 4px; border-radius: 4px; background: var(--vs-accent); }
.tct-pd-desc { font-size: 15.5px; line-height: 1.75; color: #3f4a55; }
.tct-pd-desc p { margin: 0 0 12px; }
.tct-pd-desc h3 { margin: 18px 0 8px; font-size: 16.5px; color: var(--vs-primary); }
.tct-pd-desc ul { margin: 0 0 14px; padding: 0; list-style: none; display: grid; gap: 6px; }
.tct-pd-desc li { position: relative; padding-left: 24px; }
.tct-pd-desc li::before { content: ""; position: absolute; left: 4px; top: .62em; width: 8px; height: 8px; border-radius: 2px; background: var(--vs-accent); transform: rotate(45deg); }
.tct-pd-note { margin: -6px 0 14px; font-size: 13.5px; color: #7d8a97; }

/* Bảng thông số từ web cũ */
.tct-pd-spec { font-size: 14px; color: #34404b; }
.tct-pd-spec img { max-width: 100%; height: auto; border-radius: 10px; }
.tct-pd-spec p { margin: 0 0 10px; }
.tct-tablewrap { overflow-x: auto; margin: 0 0 18px; border: 1px solid var(--vs-border); border-radius: 14px; -webkit-overflow-scrolling: touch; }
.tct-tablewrap:focus-visible { outline: 3px solid var(--vs-accent); outline-offset: 2px; }
.tct-tablewrap table { width: 100%; min-width: 560px; border-collapse: collapse; margin: 0; }
.tct-tablewrap td, .tct-tablewrap th { padding: 9px 12px; border-bottom: 1px solid #edf0f3; text-align: center; vertical-align: middle; font-size: 13.5px; }
.tct-tablewrap tr:first-child td, .tct-tablewrap tr:first-child th { background: var(--vs-primary); color: #fff; font-weight: 700; border-bottom-color: var(--vs-primary); }
.tct-tablewrap tr:first-child td strong { color: #fff; }
.tct-tablewrap tr:nth-child(2) td, .tct-tablewrap tr:nth-child(3) td { background: #eef3f8; font-weight: 600; color: var(--vs-primary); }
.tct-tablewrap tr:nth-child(n+4):nth-child(even) td { background: #fafbfc; }
.tct-tablewrap tr:nth-child(n+4):hover td { background: #fff4ea; }
.tct-tablewrap td strong { color: var(--vs-primary); }
/* Bảng tiêu đề 1 dòng (VD: "BARE COPPER CONDUCTOR") — không cần cuộn. */
.tct-tablewrap:has(tr:only-child) table { min-width: 0; }
.tct-tablewrap:has(tr:only-child) { border-color: rgba(226,113,29,.35); }
.tct-tablewrap:has(tr:only-child) td { background: #fff7f0; color: var(--vs-primary); text-align: left; font-size: 14.5px; line-height: 1.6; border-bottom: 0; }
.tct-tablewrap:has(tr:only-child) td + td { text-align: right; }
.tct-tablewrap:has(tr:only-child) td strong { color: var(--vs-primary); }

/* Cột phải */
.tct-pd-side { position: sticky; top: calc(var(--tct-pd-sticky) + 68px); display: grid; gap: 14px; }
.tct-pd-card {
  position: relative; overflow: hidden; padding: 20px 18px 16px; border-radius: 18px; color: #fff;
  background: radial-gradient(120% 140% at 100% 0%, rgba(226,113,29,.3) 0%, transparent 45%), linear-gradient(150deg, #13456f 0%, var(--vs-primary) 60%, #0b2a46 100%);
  box-shadow: 0 24px 44px -26px rgba(11,42,70,.7);
}
.tct-pd-card__t { margin: 0; font-size: 17px; font-weight: 800; line-height: 1.35; color: #fff; }
.tct-pd-card__s { margin: 4px 0 14px; font-size: 13.5px; color: rgba(255,255,255,.72); }
.tct-pd-card__reps { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.tct-pd-card__reps li { display: flex; align-items: center; gap: 6px; padding: 9px 9px 9px 12px; border-radius: 12px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); }
.tct-pd-card__reps li > span { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.tct-pd-card__reps small { font-size: 11.5px; color: rgba(255,255,255,.68); }
.tct-pd-card__reps li > span a { color: #fff; font-size: 16.5px; font-weight: 800; text-decoration: none; white-space: nowrap; }
.tct-pd-ico { flex: 0 0 auto; width: 38px; height: 38px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: #fff; transition: transform .2s; }
.tct-pd-ico svg { width: 18px; height: 18px; }
.tct-pd-ico--call { background: var(--vs-accent); }
.tct-pd-ico--zalo { background: #0068ff; }
.tct-pd-ico:hover { transform: translateY(-2px); }
.tct-pd-card__mail { display: flex; align-items: center; gap: 8px; margin-top: 12px; padding-top: 12px; border-top: 1px dashed rgba(255,255,255,.2); color: #fff; font-size: 14px; font-weight: 600; text-decoration: none; overflow-wrap: anywhere; }
.tct-pd-card__mail svg { width: 18px; height: 18px; color: #ffb170; flex: 0 0 auto; }
.tct-pd-links { display: grid; border: 1px solid var(--vs-border); border-radius: 16px; overflow: hidden; }
.tct-pd-links a { display: flex; align-items: center; gap: 10px; padding: 13px 16px; font-size: 14.5px; font-weight: 600; color: var(--vs-primary); text-decoration: none; transition: background .2s, color .2s; }
.tct-pd-links a + a { border-top: 1px solid var(--vs-border); }
.tct-pd-links a:hover { background: var(--vs-bg-light); color: var(--vs-accent); }
.tct-pd-links svg { width: 18px; height: 18px; color: var(--vs-accent); }

/* ===== Form báo giá ===== */
.tct-pd-quote { padding-block: 52px; background: linear-gradient(180deg, var(--vs-bg-light), #fff); border-top: 1px solid var(--vs-border); }
.tct-pd-quote__inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: center; }
.tct-pd-quote__label { margin: 0 0 6px; font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--vs-accent); }
.tct-pd-quote .tct-pd-quote__text h2 { margin: 0 0 18px; font-size: clamp(22px, 2.6vw, 30px); line-height: 1.25; color: var(--vs-primary); }
.tct-pd-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.tct-pd-steps li { display: flex; align-items: center; gap: 12px; font-size: 15px; font-weight: 600; color: #3f4a55; }
.tct-pd-steps span { flex: 0 0 auto; width: 34px; height: 34px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; background: var(--vs-accent); color: #fff; font-weight: 800; box-shadow: 0 0 0 5px rgba(226,113,29,.14); }
.tct-pd-quote__form { padding: 24px 26px; background: #fff; border: 1px solid var(--vs-border); border-radius: 20px; box-shadow: 0 24px 48px -30px rgba(15,53,87,.45); }
.tct-pd-quote__form .wpcf7-form p { margin: 0 0 12px; }
.tct-pd-quote__form .wpcf7-form label { display: block; font-size: 13.5px; font-weight: 600; color: var(--vs-primary); }
.tct-pd-quote__form .wpcf7-form input[type=text], .tct-pd-quote__form .wpcf7-form input[type=tel],
.tct-pd-quote__form .wpcf7-form input[type=email], .tct-pd-quote__form .wpcf7-form textarea {
  width: 100%; margin-top: 6px; padding: 11px 14px; min-height: 46px; font: inherit; font-size: 15px; color: var(--vs-primary);
  border: 1px solid var(--vs-border); border-radius: 10px; background: #fff; transition: border-color .15s, box-shadow .15s;
}
.tct-pd-quote__form .wpcf7-form input:focus, .tct-pd-quote__form .wpcf7-form textarea:focus { outline: none; border-color: var(--vs-accent); box-shadow: 0 0 0 3px rgba(226,113,29,.16); }
.tct-pd-quote__form .wpcf7-form textarea { height: 104px; resize: vertical; }
.tct-pd-quote__form .wpcf7-form input[type=submit] {
  width: 100%; min-height: 50px; padding: 14px 20px; border: 0; border-radius: 12px; cursor: pointer;
  background: var(--vs-accent); color: #fff; font-weight: 800; font-size: 15.5px; transition: background .2s, transform .2s;
}
.tct-pd-quote__form .wpcf7-form input[type=submit]:hover { transform: translateY(-2px); }
.tct-pd-quote__form .wpcf7-not-valid-tip { color: #c0261f; font-size: 12.5px; margin-top: 4px; }
.tct-pd-quote__form .wpcf7-response-output { border-radius: 10px; font-size: 14px; margin: 12px 0 0; }
.tct-pd-quote__form .tct-qf { display: grid; grid-template-columns: 1fr 1fr; column-gap: 14px; }
.tct-pd-quote__form .tct-qf__full { grid-column: 1 / -1; }

/* ===== Liên quan ===== */
.tct-pd-related { padding-block: 52px 64px; }
.tct-pd-related__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 4px; }
.tct-pd-related__head a { display: inline-flex; align-items: center; gap: 4px; font-weight: 700; color: var(--vs-accent); text-decoration: none; }
.tct-pd-related__head svg { width: 16px; height: 16px; }

/* ===== Responsive ===== */
@media (max-width: 1080px) {
  .tct-pd-body { grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; }
}
@media (max-width: 900px) {
  .tct-pd-top { grid-template-columns: minmax(0, 1fr); gap: 24px; padding-block: 20px 32px; }
  .tct-pd-media { position: static; }
  .tct-pd-media__frame { aspect-ratio: 4 / 3; }
  .tct-pd-body { grid-template-columns: minmax(0, 1fr); }
  .tct-pd-side { position: static; }
  .tct-pd-quote__inner { grid-template-columns: minmax(0, 1fr); gap: 24px; }
}
@media (max-width: 560px) {
  :root { --tct-pd-sticky: 60px; }
  .tct-pd-crumb { font-size: 12.5px; }
  .tct-pd-crumb [aria-current], .tct-pd-crumb span[aria-hidden]:has(+ [aria-current]) { display: none; }
  .tct-pd-cta { grid-template-columns: 1fr; }
  .tct-pd-assure { grid-template-columns: 1fr 1fr 1fr; gap: 6px; }
  .tct-pd-assure li { flex-direction: column; text-align: center; padding: 10px 6px; gap: 6px; }
  .tct-pd-assure span { font-size: 11px; }
  .tct-pd-assure strong { font-size: 12.5px; }
  .tct-pd-facts > div { grid-template-columns: 118px 1fr; }
  .tct-pd-facts dt, .tct-pd-facts dd { padding: 10px 12px; }
  .tct-pd-price { flex-direction: column; align-items: flex-start; gap: 8px; }
  .tct-pd-price__n { padding-left: 0; border-left: 0; }
  .tct-pd-btn { min-height: 54px; font-size: 15px; }
  .tct-pd-tabs a { padding: 13px 12px; font-size: 14px; }
  .tct-pd-body { padding-block: 28px 40px; }
  .tct-pd-quote { padding-block: 36px; }
  .tct-pd-quote__form { padding: 18px 16px; }
  .tct-pd-quote__form .tct-qf { grid-template-columns: 1fr; }
  .tct-pd-related { padding-block: 36px 48px; }
}
@media (prefers-reduced-motion: reduce) {
  .tct-pd-media__img, .tct-pd-btn, .tct-pd-ico { transition: none; }
  .tct-pd-media__frame:hover .tct-pd-media__img, .tct-pd-btn:hover { transform: none; }
}
.tct-pd-main, .tct-pd-side, .tct-pd-info, .tct-pd-media { min-width: 0; }