@import url('base.css');

.pcb-hero-grid,
.pcb-intro-layout,
.pcb-final-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 2rem;
  align-items: start;
}

.pcb-hero-card,
.pcb-specs-card,
.schema-block,
.pcb-image-block,
.bom-card,
.gallery-shell,
.dl-list,
.focus-card {
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.pcb-hero-card {
  padding: 1.6rem;
}

.pcb-hero-card p,
.pcb-intro-text p,
.focus-card p,
.arch-card p {
  color: var(--text-mid);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.panel-head,
.doc-header,
.bom-title,
.specs-title,
.gallery-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border-light);
}

.doc-filename,
.doc-info,
.pill,
.spec-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.doc-filename,
.pill,
.spec-tag {
  color: var(--tech-green);
  background: rgba(29, 53, 87, 0.08);
  border: 1px solid rgba(29, 53, 87, 0.2);
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
}

.doc-info { color: var(--text-light); }

.specs-table,
.flow-list {
  display: grid;
  gap: 1px;
  background: var(--border-light);
}

.spec-row,
.flow-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 1rem;
  padding: 0.9rem 1.2rem;
  background: #ffffff;
}

.spec-k,
.flow-key {
  color: var(--text-light);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.spec-v,
.flow-val {
  color: var(--white);
  font-size: 0.88rem;
  line-height: 1.7;
}

.schema-img-wrap,
.pcb-img-wrap {
  padding: 1rem;
}

.schema-img,
.pcb-img {
  width: 100%;
  border-radius: calc(var(--radius) - 2px);
  border: 1px solid var(--border);
}

.fig-caption {
  padding: 0.8rem 1.2rem;
  color: var(--text-light);
  font-size: 0.78rem;
  border-top: 1px solid var(--border-light);
}

.arch-grid,
.focus-grid,
.gallery-grid {
  display: grid;
  gap: 1rem;
}

.arch-grid,
.focus-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.gallery-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.arch-card,
.focus-card {
  padding: 1.35rem;
}

.arch-num {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(29, 53, 87, 0.08);
  color: var(--tech-green);
  font-family: var(--font-mono);
  margin-bottom: 0.85rem;
}

.arch-card h3,
.focus-card h3,
.dl-name {
  color: var(--white);
  font-family: var(--font-title);
  margin-bottom: 0.55rem;
}

.gallery-item {
  position: relative;
  min-height: 220px;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.gallery-item:hover img { transform: scale(1.04); }

.gallery-item.large {
  grid-column: span 2;
  min-height: 320px;
}

.gallery-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.9rem;
  background: linear-gradient(180deg, transparent, rgba(29, 53, 87, 0.06));
  color: var(--white);
  font-size: 0.84rem;
}

.bom-card table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.bom-card th {
  padding: 0.8rem 1rem;
  background: rgba(29, 53, 87, 0.08);
  color: var(--white);
  text-align: left;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.bom-card td {
  padding: 0.82rem 1rem;
  color: var(--text-mid);
  border-bottom: 1px solid var(--border-light);
  vertical-align: top;
  line-height: 1.7;
}

.bom-card tbody tr:last-child td { border-bottom: none; }
.bom-card tbody tr:nth-child(even) td { background: rgba(29, 53, 87, 0.04); }
.bom-card td:first-child,
.bom-card td:nth-child(4) { color: var(--white); }

.dl-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border-light);
  transition: background var(--tr), transform var(--tr);
}

.dl-item:last-child { border-bottom: none; }

.dl-item:hover {
  background: rgba(29, 53, 87, 0.04);
  transform: translateX(4px);
}

.dl-icon-wrap {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(29, 53, 87, 0.08);
  color: var(--tech-green);
  border: 1px solid rgba(29, 53, 87, 0.18);
  flex-shrink: 0;
}

.dl-info { flex: 1; }

.dl-name { font-size: 0.96rem; }

.dl-meta {
  color: var(--text-light);
  font-size: 0.78rem;
  line-height: 1.6;
}

.dl-badge {
  font-family: var(--font-mono);
  color: var(--tech-green);
  font-size: 0.72rem;
  flex-shrink: 0;
}

@media (max-width: 980px) {
  .pcb-hero-grid,
  .pcb-intro-layout,
  .pcb-final-layout,
  .arch-grid,
  .focus-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .gallery-grid,
  .spec-row,
  .flow-item { grid-template-columns: 1fr; }
  .gallery-item.large { grid-column: span 1; }
}