/* ═══════════════════════════════════════════════════
   product_detail.css — Product Detail page-specific styles
   Shared base: styles/main.css
   ═══════════════════════════════════════════════════ */

/* ════════════════════════════════════════════════════
   BREADCRUMB
════════════════════════════════════════════════════ */
.pd-breadcrumb {
  padding-block: 18px;
  background: var(--c-bg2);
  border-block-end: 1px solid var(--c-border);
  margin-block-start: 64px; /* navbar height */
}

.bc-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-gray);
  transition:
    color var(--t) var(--ease),
    gap var(--t) var(--ease);
}
.bc-link:hover {
  color: var(--c-cyan);
  gap: 4px;
}
.bc-link svg {
  flex-shrink: 0;
}

/* ════════════════════════════════════════════════════
   PRODUCT HERO
════════════════════════════════════════════════════ */
.pd-hero {
  background:
    radial-gradient(
      ellipse 900px 600px at 70% 50%,
      rgba(14, 50, 100, 0.4) 0%,
      transparent 65%
    ),
    linear-gradient(160deg, #050b15 0%, #081525 55%, #050b15 100%);
  border-block-end: 1px solid var(--c-border);
  overflow: hidden;
  position: relative;
}
.pd-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 79px,
      rgba(14, 80, 160, 0.04) 79px,
      rgba(14, 80, 160, 0.04) 80px
    ),
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 79px,
      rgba(14, 80, 160, 0.03) 79px,
      rgba(14, 80, 160, 0.03) 80px
    );
  pointer-events: none;
}

.pd-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding-block: 80px;
}

.pd-hero-content {
  display: flex;
  flex-direction: column;
}

.pd-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 2.5px;
  color: var(--c-cyan);
  text-transform: uppercase;
  margin-block-end: 18px;
}
.pd-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 8px var(--c-cyan);
  flex-shrink: 0;
}

.pd-title {
  font-size: clamp(32px, 4.5vw, 54px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-block-end: 20px;
}

.pd-desc {
  font-size: 15px;
  color: var(--c-light);
  opacity: 0.85;
  line-height: 1.75;
  max-width: 480px;
  margin-block-end: 16px;
}
.pd-partno {
  font-size: 13px;
  color: var(--c-gray);
  margin-block-end: 32px;
}

.pd-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.pd-btn-dl {
  color: var(--c-light) !important;
  border-color: var(--c-border) !important;
}
.pd-btn-dl:hover {
  border-color: var(--c-border-h) !important;
  color: var(--c-white) !important;
}

/* Hero Image */
.pd-hero-img-wrap {
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  box-shadow:
    0 0 0 1px var(--c-border),
    0 32px 80px rgba(0, 0, 0, 0.5),
    0 0 60px rgba(56, 189, 248, 0.08);
  transition:
    transform 0.6s var(--ease),
    box-shadow 0.6s var(--ease);
}
.pd-hero-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.pd-hero-img-wrap:hover {
  transform: scale(1.02) translateY(-4px);
  box-shadow:
    0 0 0 1px rgba(56, 189, 248, 0.2),
    0 40px 100px rgba(0, 0, 0, 0.6),
    0 0 80px rgba(56, 189, 248, 0.12);
}

/* ════════════════════════════════════════════════════
   SECTION SHARED
════════════════════════════════════════════════════ */
.section-pad {
  padding-block: 72px;
}

.pd-sec-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 900;
  letter-spacing: -0.6px;
  margin-block-end: 36px;
}

/* ════════════════════════════════════════════════════
   SPECS TABLE
════════════════════════════════════════════════════ */
.pd-specs {
  background: var(--c-bg2);
  border-block-end: 1px solid var(--c-border);
}

.specs-table {
  border: 1px solid var(--c-border);
  border-radius: 16px;
  overflow: hidden;
}

.specs-header {
  display: grid;
  grid-template-columns: 240px 1fr;
  background: rgba(56, 189, 248, 0.06);
  border-block-end: 1px solid var(--c-border);
  padding: 14px 24px;
}
.specs-header span {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--c-gray);
}

.specs-row {
  display: grid;
  grid-template-columns: 240px 1fr;
  padding: 18px 24px;
  border-block-end: 1px solid var(--c-border);
  transition: background var(--t) var(--ease);
}
.specs-row:last-child {
  border-block-end: none;
}
.specs-row:nth-child(odd) {
  background: rgba(255, 255, 255, 0.015);
}
.specs-row:hover {
  background: rgba(56, 189, 248, 0.04);
}

.specs-param {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--c-light);
}
.specs-val {
  font-size: 13.5px;
  color: var(--c-gray);
  line-height: 1.6;
}

/* ════════════════════════════════════════════════════
   TECH LIBRARY
════════════════════════════════════════════════════ */
.pd-library {
  background: var(--c-bg);
}

.pd-lib-sub {
  font-size: 14.5px;
  color: var(--c-gray);
  line-height: 1.7;
  max-width: 520px;
  margin-block-end: 40px;
  margin-block-start: -20px;
}

.lib-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.lib-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  padding: 20px 24px;
  transition:
    border-color var(--t) var(--ease),
    box-shadow var(--t) var(--ease),
    transform var(--t) var(--ease);
}
.lib-card:hover {
  border-color: var(--c-border-h);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  transform: translateX(4px);
}

.lib-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 12px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-cyan);
  transition: background var(--t) var(--ease);
}
.lib-card:hover .lib-icon {
  background: rgba(56, 189, 248, 0.14);
}

.lib-info {
  flex: 1;
}
.lib-name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.2px;
  margin-block-end: 4px;
}
.lib-meta {
  font-size: 12px;
  color: var(--c-gray);
  font-weight: 500;
}

.lib-dl {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 10px;
  border: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gray);
  transition:
    color var(--t) var(--ease),
    border-color var(--t) var(--ease),
    background var(--t) var(--ease);
}
.lib-dl:hover {
  color: var(--c-cyan);
  border-color: rgba(56, 189, 248, 0.4);
  background: rgba(56, 189, 248, 0.08);
}

/* ════════════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .pd-hero-grid {
    gap: 48px;
    padding-block: 64px;
  }
  .specs-header,
  .specs-row {
    grid-template-columns: 180px 1fr;
  }
}

@media (max-width: 768px) {
  .pd-hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-block: 48px;
  }
  .pd-hero-img {
    aspect-ratio: 16 / 9;
  }
  .pd-hero-img-wrap {
    order: -1;
  }
  .specs-header,
  .specs-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .specs-header span:last-child {
    display: none;
  }
  .specs-param {
    color: var(--c-cyan);
    font-size: 11px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
  }
  .specs-val {
    font-size: 14px;
    color: var(--c-light);
  }
  .section-pad {
    padding-block: 52px;
  }
}

@media (max-width: 480px) {
  .pd-buttons {
    flex-direction: column;
  }
  .lib-card {
    padding: 16px 18px;
  }
}