* {
  box-sizing: border-box;
}

:root {
  --navy: #003366;
  --blue: #0072c6;
  --ink: #172033;
  --muted: #64748b;
  --line: #e2e8f0;
  --page: #f4f7fb;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: Inter, Arial, sans-serif;
}

button, input, select {
  font: inherit;
}

.topbar {
  min-height: 70px;
  padding: 12px clamp(16px, 4vw, 48px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: rgba(0, 51, 102, .98);
  color: white;
  position: sticky;
  top: 0;
  z-index: 5;
  box-shadow: 0 4px 18px #0002;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: white;
  text-decoration: none;
  font-size: .88rem;
  font-weight: 800;
  letter-spacing: .03em;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.topbar nav {
  display: flex;
  gap: 8px;
}

.topbar nav a {
  color: white;
  text-decoration: none;
  padding: 10px 13px;
  border-radius: 9px;
}

.topbar nav a:hover,
.topbar nav .active {
  background: #ffffff24;
}

.container {
  width: min(1440px, calc(100% - 32px));
  margin: auto;
}

.hero {
  padding: 35px 0 22px;
}

.eyebrow {
  font-size: .75rem;
  letter-spacing: .12em;
  font-weight: 800;
  color: var(--blue);
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -.04em;
  margin: 9px 0;
  color: #0f172a;
}

.hero p {
  max-width: 760px;
  line-height: 1.6;
  color: var(--muted);
  margin: 0;
}

.search-panel {
  background: white;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 10px 28px #0f172a0a;
}

.search-panel > label {
  display: block;
  font-weight: 700;
  font-size: .8rem;
  margin-bottom: 8px;
}

.search-row {
  display: flex;
  gap: 10px;
}

.searchbox {
  display: flex;
  align-items: center;
  gap: 9px;
  flex: 1;
  min-width: 0;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 0 12px;
}

.searchbox span {
  font-size: 1.5rem;
  color: var(--muted);
}

.searchbox input {
  border: 0;
  outline: 0;
  padding: 13px 0;
  width: 100%;
  min-width: 0;
}

.searchbox button {
  border: 0;
  background: white;
  font-size: 1.4rem;
  color: var(--muted);
  cursor: pointer;
}

.primary, .secondary {
  border-radius: 10px;
  padding: 0 18px;
  font-weight: 700;
  min-height: 44px;
  cursor: pointer;
}

.primary {
  border: 0;
  background: var(--blue);
  color: white;
}

.primary:hover {
  background: var(--navy);
}

.secondary {
  border: 1px solid #cbd5e1;
  background: white;
  color: #334155;
}

.filters {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr)) auto;
  gap: 12px;
  align-items: end;
  margin-top: 17px;
}

.filters label {
  font-size: .76rem;
  color: #475569;
  font-weight: 700;
}

.filters select {
  display: block;
  width: 100%;
  margin-top: 7px;
  min-height: 42px;
  border: 1px solid #cbd5e1;
  border-radius: 9px;
  padding: 0 9px;
  background: white;
  color: var(--ink);
}

.status {
  font-size: .82rem;
  color: var(--muted);
  margin: 14px 0 0;
}

.status.error {
  color: #b91c1c;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin: 30px 0 16px;
  gap: 12px;
}

.section-heading h2 {
  margin: 0 0 4px;
  font-size: 1.35rem;
}

.section-heading p,
.section-heading small {
  margin: 0;
  color: var(--muted);
  font-size: .82rem;
}

.type-group {
  margin: 26px 0 32px;
}

.group-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 13px;
}

.group-heading h3 {
  margin: 0;
  font-size: 1.05rem;
}

.group-count {
  background: #e2e8f0;
  border-radius: 99px;
  padding: 3px 9px;
  font-size: .75rem;
  font-weight: 700;
}

.slab-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 15px;
}

.slab-card {
  min-width: 0;
  overflow: hidden;
  background: white;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 3px 10px #0f172a08;
  cursor: pointer;
  transition: .16s;
}

.slab-card:hover,
.slab-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px #0f172a15;
  outline: 2px solid #0072c633;
}

.photo-wrap {
  aspect-ratio: 1.22;
  background: #e9edf2;
  overflow: hidden;
}

.card-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.photo-fallback {
  height: 100%;
  min-height: 130px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 15px;
  color: #64748b;
  font-size: .8rem;
}

.card-body {
  padding: 12px;
}

.card-code {
  color: var(--blue);
  font-size: .7rem;
  font-weight: 800;
}

.card-title {
  font-size: .9rem;
  line-height: 1.35;
  min-height: 2.4em;
  margin: 5px 0 8px;
}

.card-meta {
  color: var(--muted);
  font-size: .74rem;
  line-height: 1.55;
}

.card-price {
  font-weight: 800;
  color: var(--navy);
  font-size: 1.02rem;
  margin-top: 10px;
}

.card-link {
  display: inline-block;
  margin-top: 9px;
  color: var(--blue);
  font-size: .72rem;
  font-weight: 800;
}

.empty {
  background: white;
  text-align: center;
  padding: 42px 20px;
  border: 1px dashed #cbd5e1;
  border-radius: 14px;
}

.empty p {
  color: var(--muted);
}

footer {
  text-align: center;
  padding: 32px 0 25px;
  color: var(--muted);
  font-size: .78rem;
}

dialog {
  padding: 0;
  border: 0;
  border-radius: 16px;
  width: min(1000px, calc(100% - 24px));
  max-width: 1000px;
  max-height: 92vh;
  box-shadow: 0 25px 90px #0005;
  color: var(--ink);
}

dialog::backdrop {
  background: #081426b8;
  backdrop-filter: blur(3px);
}

.close {
  position: sticky;
  float: right;
  top: 8px;
  margin: 10px 10px -48px 0;
  z-index: 2;
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 50%;
  background: #0f172ad9;
  color: white;
  font-size: 1.6rem;
  cursor: pointer;
}

.detail-layout {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
}

.detail-photo-panel {
  min-height: 440px;
  background: #e8edf3;
  display: grid;
  place-items: center;
}

.detail-photo {
  width: 100%;
  height: 100%;
  max-height: 78vh;
  object-fit: contain;
}

.detail-info {
  padding: 34px 28px 28px;
}

.detail-info h2 {
  margin: 8px 0 5px;
  line-height: 1.2;
  font-size: 1.6rem;
}

.detail-code {
  color: var(--muted);
  margin-bottom: 20px;
  font-size: .85rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.detail-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px;
  min-width: 0;
}

.detail-label {
  display: block;
  color: var(--muted);
  font-size: .72rem;
  margin-bottom: 5px;
}

.detail-value {
  display: block;
  font-size: .9rem;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.detail-price {
  margin: 20px 0;
  padding: 16px;
  border-radius: 12px;
  background: #eff6ff;
}

.detail-price .detail-value {
  color: var(--navy);
  font-size: 1.6rem;
}

.code-inventory {
  border: 1px dashed #94a3b8;
  border-radius: 12px;
  padding: 13px;
  margin-top: 14px;
  background: #f8fafc;
}

.verify-note {
  font-size: .78rem;
  line-height: 1.5;
  color: var(--muted);
  margin-top: 18px;
}

@media (max-width: 1200px) {
  .slab-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .filters {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 850px) {
  .slab-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .detail-layout {
    grid-template-columns: 1fr;
  }

  .detail-photo-panel {
    min-height: 280px;
    max-height: 45vh;
  }

  .detail-photo {
    max-height: 45vh;
  }

  .detail-info {
    padding: 24px 18px;
  }
}

@media (max-width: 600px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .brand {
    font-size: .75rem;
  }

  .container {
    width: calc(100% - 20px);
  }

  .hero {
    padding-top: 25px;
  }

  .search-panel {
    padding: 14px;
  }

  .search-row {
    flex-direction: column;
  }

  .filters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .filters .secondary {
    grid-column: 1 / -1;
  }

  .slab-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .card-body {
    padding: 10px;
  }

  .card-title {
    font-size: .82rem;
  }

  .section-heading small {
    display: none;
  }
}