/* ══════════════════════════════════════════════════════
   LongRun LED — product-detail.css
   ══════════════════════════════════════════════════════ */

/* ────────────────────────────
   HERO — Detail version (shorter)
   ──────────────────────────── */
.detail-hero {
  height: 220px;
  background: linear-gradient(135deg, #0a1628 0%, #0d2a5e 55%, #1a3a7a 100%);
  position: relative;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.detail-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 90% at 75% 50%, rgba(0,87,184,.3) 0%, transparent 70%),
    repeating-linear-gradient(90deg, transparent, transparent 60px, rgba(255,255,255,.018) 60px, rgba(255,255,255,.018) 61px),
    repeating-linear-gradient(0deg,  transparent, transparent 60px, rgba(255,255,255,.018) 60px, rgba(255,255,255,.018) 61px);
  pointer-events: none;
}

.detail-hero-content {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px 32px;
}

.detail-hero-content .hero-breadcrumb { margin-bottom: 10px; }
.detail-hero-content .hero-title {
  font-size: 36px;
  margin-bottom: 0;
}

/* ────────────────────────────
   STICKY PRODUCT TABS
   ──────────────────────────── */
.product-nav-bar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: var(--nav-h);
  z-index: 89;
}

.product-nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.product-nav-inner::-webkit-scrollbar { display: none; }

.pnav-link {
  padding: 16px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
  display: block;
}
.pnav-link:hover  { color: var(--accent); }
.pnav-link.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ────────────────────────────
   PRODUCT SHOWCASE — Hero image + key icons
   ──────────────────────────── */
.showcase-section {
  background: #f4f7fc;
  padding: 64px 24px;
}

.showcase-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
}

/* Image gallery */
.showcase-gallery {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gallery-main {
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  aspect-ratio: 16/9;
  box-shadow: 0 8px 40px rgba(0,0,0,.10);
  position: relative;
}
.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity .35s ease;
}

.gallery-thumbs {
  display: flex;
  gap: 10px;
}

.thumb {
  width: 80px;
  height: 56px;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color .2s;
  flex-shrink: 0;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb.active,
.thumb:hover { border-color: var(--accent); }

/* Info panel */
.showcase-info {}

.info-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.info-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.5px;
  margin-bottom: 6px;
}

.info-tech-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 20px;
  background: rgba(0,87,184,.1);
  color: var(--accent);
  margin-bottom: 14px;
}

.info-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

/* Spec table */
.info-spec-table {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 24px;
}
.spec-table-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  border-bottom: 1px solid var(--border);
}
.spec-table-row:last-child { border-bottom: none; }
.spec-table-key {
  padding: 11px 16px;
  font-size: 12px;
  color: var(--muted);
  background: var(--card-bg);
  border-right: 1px solid var(--border);
}
.spec-table-val {
  padding: 11px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
}

/* Key feature icons */
.key-icons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 24px;
}
.key-icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: center;
  transition: border-color .2s, box-shadow .2s;
}
.key-icon-item:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 16px rgba(0,87,184,.08);
}
.key-icon-item svg {
  width: 28px;
  height: 28px;
  color: var(--accent);
}
.key-icon-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.info-actions {
  display: flex;
  gap: 12px;
}

.btn-dl {
  flex: 1;
  padding: 12px 20px;
  border-radius: 8px;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  transition: all .2s;
}
.btn-dl:hover { background: var(--accent); color: #fff; }

.btn-inq {
  flex: 1;
  padding: 12px 20px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  transition: background .2s;
}
.btn-inq:hover { background: var(--accent-dk); }

/* ────────────────────────────
   FEATURE SECTIONS
   ──────────────────────────── */
.features-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 24px;
}

.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}
.feature-block:first-child { padding-top: 0; }
.feature-block:last-child  { border-bottom: none; padding-bottom: 0; }

/* Alternate image side */
.feature-block.reverse { direction: rtl; }
.feature-block.reverse > * { direction: ltr; }

.feature-img {
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: 0 8px 40px rgba(0,0,0,.08);
}
.feature-img img { width: 100%; height: 100%; object-fit: cover; }

.feature-text {}
.feature-number {
  font-size: 64px;
  font-weight: 800;
  color: rgba(0,87,184,.08);
  line-height: 1;
  margin-bottom: -16px;
  letter-spacing: -2px;
}
.feature-title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}
.feature-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}
.feature-bullets {
  list-style: none;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.feature-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
}
.feature-bullets li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  margin-top: 7px;
}

/* ────────────────────────────
   FULL SPEC TABLE
   ──────────────────────────── */
.spec-section {
  background: var(--card-bg);
  padding: 80px 24px;
}

.spec-section-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.section-heading {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -.5px;
  margin-bottom: 8px;
}
.section-subheading {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 40px;
}

.full-spec-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(0,0,0,.05);
}
.full-spec-table thead tr {
  background: var(--dark-navy);
}
.full-spec-table thead th {
  padding: 14px 20px;
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,.8);
  text-align: left;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.full-spec-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background .15s;
}
.full-spec-table tbody tr:last-child { border-bottom: none; }
.full-spec-table tbody tr:hover { background: var(--accent-lt); }
.full-spec-table tbody td {
  padding: 13px 20px;
  font-size: 13px;
  color: var(--text);
}
.full-spec-table tbody td:first-child {
  color: var(--muted);
  font-weight: 500;
  width: 220px;
}
.full-spec-table tbody td:not(:first-child) {
  font-weight: 600;
}

/* ────────────────────────────
   RELATED PRODUCTS
   ──────────────────────────── */
.related-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 24px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* reuse .product-card from product-style.css */

/* ────────────────────────────
   INLINE CONTACT FORM
   ──────────────────────────── */
.detail-contact-section {
  background: linear-gradient(135deg, #0a1628, #0d2a5e);
  padding: 80px 24px;
}
.detail-contact-inner {
  max-width: 960px;
  margin: 0 auto;
}
.detail-contact-inner .section-heading { color: #fff; }
.detail-contact-inner .section-subheading { color: rgba(255,255,255,.6); }

.detail-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.detail-form .full-width { grid-column: 1 / -1; }

.df-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.df-group label {
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,.7);
  letter-spacing: .4px;
}
.df-group input,
.df-group select,
.df-group textarea {
  padding: 11px 14px;
  border-radius: 8px;
  border: 1.5px solid rgba(255,255,255,.15);
  background: rgba(255,255,255,.08);
  color: #fff;
  font-size: 13px;
  outline: none;
  transition: border-color .2s, background .2s;
  font-family: inherit;
}
.df-group input::placeholder,
.df-group textarea::placeholder { color: rgba(255,255,255,.35); }
.df-group input:focus,
.df-group select:focus,
.df-group textarea:focus {
  border-color: rgba(0,150,255,.6);
  background: rgba(255,255,255,.12);
}
.df-group select option { color: var(--text); background: #fff; }
.df-group textarea { resize: vertical; min-height: 110px; }

.captcha-row-df {
  display: flex;
  gap: 10px;
  align-items: center;
}
.captcha-row-df input { flex: 1; }
.captcha-canvas-df {
  width: 110px;
  height: 42px;
  border-radius: 8px;
  background: rgba(255,255,255,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 6px;
  color: #fff;
  user-select: none;
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}
.captcha-canvas-df::after {
  content: '↻';
  position: absolute;
  right: 6px;
  bottom: 3px;
  font-size: 12px;
  opacity: .6;
}

.btn-df-submit {
  grid-column: 1 / -1;
  padding: 14px 40px;
  border-radius: 8px;
  background: #fff;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: background .2s, color .2s;
  width: 180px;
  margin-top: 4px;
}
.btn-df-submit:hover { background: var(--accent-lt); }

.df-success {
  display: none;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  color: #fff;
  grid-column: 1/-1;
}
.df-success-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(34,197,94,.2);
  color: #4ade80;
  font-size: 28px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}

/* ────────────────────────────
   RESPONSIVE
   ──────────────────────────── */
@media (max-width: 1024px) {
  .showcase-inner  { grid-template-columns: 1fr; gap: 40px; }
  .feature-block   { grid-template-columns: 1fr; gap: 32px; }
  .feature-block.reverse { direction: ltr; }
  .feature-number  { font-size: 48px; }
  .related-grid    { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .detail-hero { height: 180px; }
  .detail-hero-content .hero-title { font-size: 28px; }
  .showcase-section { padding: 40px 16px; }
  .features-section { padding: 48px 16px; }
  .key-icons { grid-template-columns: repeat(4, 1fr); }
  .related-grid { grid-template-columns: 1fr; }
  .detail-form { grid-template-columns: 1fr; }
  .detail-form .full-width { grid-column: 1; }
  .spec-section { padding: 48px 16px; }
  .full-spec-table thead { display: none; }
  .full-spec-table tbody tr {
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding: 12px 16px;
  }
  .full-spec-table tbody td { padding: 4px 0; }
  .full-spec-table tbody td:first-child { width: auto; }
}