:root {
  --bg: #eef4f7;
  --panel: #ffffff;
  --panel-soft: #f8fbfd;
  --text: #1f2933;
  --muted: #667788;
  --border: #d7e1e9;
  --accent: #0f766e;
  --accent-soft: #e3f5f2;
  --warn-bg: #fff3e8;
  --warn-border: #f3cfb3;
  --warn-text: #b45309;
  --shadow: 0 16px 40px rgba(26, 44, 57, 0.12);
}

body.dark {
  --bg: #111820;
  --panel: #1a242e;
  --panel-soft: #202d39;
  --text: #e6edf3;
  --muted: #9db0c1;
  --border: #2e3d4b;
  --accent: #41b8ab;
  --accent-soft: #1f3f3a;
  --warn-bg: #3b2b1e;
  --warn-border: #705437;
  --warn-text: #f4bc7f;
  --shadow: 0 20px 44px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  padding-inline: 1rem;
  color: var(--text);
  background:
    radial-gradient(circle at 8% -8%, #cbe8f3 0%, transparent 36%),
    radial-gradient(circle at 95% 5%, #d7f3e6 0%, transparent 38%),
    linear-gradient(180deg, #f4f9fc 0%, var(--bg) 45%);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

body.dark {
  background:
    radial-gradient(circle at 8% -8%, #173445 0%, transparent 36%),
    radial-gradient(circle at 95% 5%, #1d3f2e 0%, transparent 38%),
    linear-gradient(180deg, #151f28 0%, var(--bg) 45%);
}

.site-header,
.layout,
.site-footer {
  width: calc(100% - 2rem);
  max-width: none;
  margin-inline: auto;
}

.layout {
  display: grid;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  min-width: 0;
}

.filters-sidebar {
  position: sticky;
  top: 0.75rem;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 1.3rem 0 0.9rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.site-header h1 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.site-header p,
.header-meta {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.warning-banner {
  background: #fef3c7;
  border: 1px solid #f59e0b;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: #92400e;
}

.warning-banner strong {
  color: #78350f;
}

body.dark .warning-banner {
  background: #78350f;
  border-color: #f59e0b;
  color: #fef08a;
}

body.dark .warning-banner strong {
  color: #fde68a;
}

.control-panel {
  border: 1px solid var(--border);
  background: var(--panel-soft);
  border-radius: 12px;
  overflow: hidden;
}

.control-panel summary {
  padding: 0.7rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--panel-soft);
  user-select: none;
}

.control-panel summary::-webkit-details-marker {
  display: none;
}

.control-panel[open] .filter-toggle-icon {
  transform: rotate(180deg);
}

.filter-toggle-icon {
  font-size: 0.7rem;
  transition: transform 0.2s;
}

.control-panel > *:not(summary) {
  padding: 0.85rem;
  background: var(--panel-soft);
}

.control-panel .results-topbar {
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.results-topbar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.7rem;
  align-items: end;
  margin-bottom: 0.75rem;
}

.filters-row {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 0.7rem;
}

.range-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
}

.range-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.range-item-inline {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 58px;
}

.range-item-label {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 600;
}

.range-inputs {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.range-inputs:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.range-inputs input {
  border: none;
  background: transparent;
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
  color: var(--text);
  width: 80px;
  outline: none;
}

.range-inputs .separator {
  padding: 0 0.3rem;
  color: var(--muted);
  font-size: 0.8rem;
}

body.dark .results,
body.dark .control-panel,
body.dark .table-wrap {
  background: var(--panel);
  border-color: var(--border);
}

.results {
  background: var(--panel);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: var(--shadow);
  overflow: hidden;
  min-width: 0;
}

body.dark .results {
  background: var(--panel);
}

.table-wrap {
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
  max-width: 100%;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  table-layout: fixed;
}

thead th {
  text-align: left;
  padding: 0.65rem 0.85rem;
  font-weight: 600;
  font-size: 0.78rem;
  color: var(--muted);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}

thead th:hover {
  color: var(--text);
}

thead th::after {
  content: "";
}

tbody td {
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--accent-soft);
}

body.dark tbody tr:hover {
  background: var(--accent-soft);
}

.title-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.title-link:hover {
  text-decoration: underline;
}

.price {
  font-weight: 700;
  white-space: nowrap;
}

.price small {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.75em;
}

.sort-indicator {
  margin-left: 0.3rem;
  opacity: 0.5;
}

.chip {
  margin: 0.2rem;
  padding: 0.35rem 0.7rem;
  font-size: 0.82rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
  white-space: nowrap;
}

.chip:hover {
  border-color: var(--accent);
}

.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

[data-filter="ramType"][data-value="DDR5"].active { background: #581c87; border-color: #581c87; color: #e9d5ff; }
[data-filter="ramType"][data-value="DDR4"].active { background: #1e3a8a; border-color: #1e3a8a; color: #bfdbfe; }
[data-filter="ramType"][data-value="DDR3"].active { background: #134e4a; border-color: #134e4a; color: #99f6e4; }
[data-filter="ramType"][data-value="DDR2"].active,
[data-filter="ramType"][data-value="DDR"].active { background: #374151; border-color: #374151; color: #d1d5db; }

[data-filter="ecc"][data-value="ECC"].active { background: #78350f; border-color: #78350f; color: #fde68a; }
[data-filter="ecc"][data-value="NON_ECC"].active { background: #14532d; border-color: #14532d; color: #bbf7d0; }

[data-filter="condition"][data-value="NEW"].active { background: #14532d; border-color: #14532d; color: #bbf7d0; }
[data-filter="condition"][data-value="USED"].active { background: #1e3a8a; border-color: #1e3a8a; color: #bfdbfe; }
[data-filter="condition"][data-value="REFURBISHED"].active { background: #713f12; border-color: #713f12; color: #fef08a; }
[data-filter="condition"][data-value="NOT_WORKING"].active { background: #7f1d1d; border-color: #7f1d1d; color: #fecaca; }

[data-filter="formFactor"][data-value="SODIMM"].active { background: #581c87; border-color: #581c87; color: #e9d5ff; }
[data-filter="formFactor"][data-value="UDIMM"].active { background: #1e3a8a; border-color: #1e3a8a; color: #bfdbfe; }

[data-filter="listingType"][data-value="BIN"].active { background: #14532d; border-color: #14532d; color: #bbf7d0; }
[data-filter="listingType"][data-value="AUCTION"].active { background: #78350f; border-color: #78350f; color: #fde68a; }
[data-filter="listingType"][data-value="BEST_OFFER"].active { background: #1e3a8a; border-color: #1e3a8a; color: #bfdbfe; }

body.dark .chip {
  border-color: var(--border);
}

body.dark .chip:hover {
  border-color: var(--accent);
}

.toolbar-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.toolbar-group label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  text-align: center;
}

.toolbar-group input,
.toolbar-group select {
  padding: 0.45rem 0.65rem;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}

.toolbar-group input:hover,
.toolbar-group select:hover {
  border-color: var(--accent);
}

.toolbar-group input:focus,
.toolbar-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.toolbar-group input::placeholder {
  color: var(--muted);
}

body.dark .toolbar-group input,
body.dark .toolbar-group select {
  background: var(--panel);
  border-color: var(--border);
}

body.dark .toolbar-group input:hover,
body.dark .toolbar-group select:hover {
  border-color: var(--accent);
}

body.dark .toolbar-group input:focus,
body.dark .toolbar-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.range-inputs {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.range-inputs:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.range-inputs input {
  border: none;
  background: transparent;
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
  color: var(--text);
  width: 80px;
  outline: none;
}

.range-inputs .separator {
  padding: 0 0.3rem;
  color: var(--muted);
  font-size: 0.8rem;
}

body.dark .range-inputs {
  background: var(--panel);
  border-color: var(--border);
}

body.dark .range-inputs:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

body.dark .range-inputs input {
  color: var(--text);
}

body.dark .range-inputs .separator {
  color: var(--muted);
}

.mode-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  font-size: 0.85rem;
}

.btn-ghost {
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}

.btn-ghost:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

body.dark .btn-ghost {
  border-color: var(--border);
  color: var(--muted);
}

body.dark .btn-ghost:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.top-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  flex-wrap: wrap;
}

.check-inline {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text);
}

.check-inline input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.table-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.mobile-sort-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mobile-sort-wrap label {
  font-size: 0.85rem;
  color: var(--muted);
}

.mobile-sort-wrap select {
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}

.mobile-only {
  display: none;
}

.desktop-only {
  display: inline;
}

#resultCount {
  font-weight: 600;
  color: var(--text);
  font-size: 0.9rem;
}

.sort-help {
  font-size: 0.78rem;
  color: var(--muted);
}

.mobile-cards {
  display: none;
}

.mobile-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.85rem;
  margin-bottom: 0.7rem;
}

.mobile-title {
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--text);
  text-decoration: none;
}

.mobile-title:hover {
  text-decoration: underline;
}

.mobile-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.mobile-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.mobile-row:last-child {
  border-bottom: none;
}

.mobile-row span {
  color: var(--muted);
  font-size: 0.85rem;
}

.mobile-row strong {
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
  text-align: right;
}

.badge,
.cell-badge {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid transparent;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.ramtype-ddr5 { background: #581c87; color: #e9d5ff; }
.ramtype-ddr4 { background: #1e3a8a; color: #bfdbfe; }
.ramtype-ddr3 { background: #134e4a; color: #99f6e4; }
.ramtype-ddr2, .ramtype-ddr { background: #374151; color: #d1d5db; }
.ramtype-lpddr4, .ramtype-lpddr5 { background: #312e81; color: #c7d2fe; }
.ramtype-unknown { background: #374151; color: #d1d5db; }

.ecc-non_ecc { background: #14532d; color: #bbf7d0; }
.ecc-ecc { background: #78350f; color: #fde68a; }
.ecc-unknown { background: #374151; color: #d1d5db; }

.condition-new { background: #14532d; color: #bbf7d0; }
.condition-used { background: #1e3a8a; color: #bfdbfe; }
.condition-refurbished { background: #713f12; color: #fef08a; }
.condition-not_working { background: #7f1d1d; color: #fecaca; }
.condition-unknown { background: #374151; color: #d1d5db; }

.formfactor-sodimm { background: #581c87; color: #e9d5ff; }
.formfactor-udimm { background: #1e3a8a; color: #bfdbfe; }
.formfactor-dimm { background: #134e4a; color: #99f6e4; }
.formfactor-camm { background: #831843; color: #fbcfe8; }
.formfactor-unknown { background: #374151; color: #d1d5db; }

.listingtype-bin { background: #14532d; color: #bbf7d0; }
.listingtype-auction { background: #78350f; color: #fde68a; }
.listingtype-best_offer { background: #1e3a8a; color: #bfdbfe; }
.listingtype-unknown { background: #374151; color: #d1d5db; }

body.dark .ramtype-ddr5 { background: #581c87; color: #e9d5ff; }
body.dark .ramtype-ddr4 { background: #1e3a8a; color: #bfdbfe; }
body.dark .ramtype-ddr3 { background: #134e4a; color: #99f6e4; }
body.dark .ramtype-ddr2, body.dark .ramtype-ddr { background: #374151; color: #d1d5db; }
body.dark .ramtype-lpddr4, body.dark .ramtype-lpddr5 { background: #312e81; color: #c7d2fe; }
body.dark .ramtype-unknown { background: #374151; color: #d1d5db; }

body.dark .ecc-non_ecc { background: #14532d; color: #bbf7d0; }
body.dark .ecc-ecc { background: #78350f; color: #fde68a; }
body.dark .ecc-unknown { background: #374151; color: #d1d5db; }

body.dark .condition-new { background: #14532d; color: #bbf7d0; }
body.dark .condition-used { background: #1e3a8a; color: #bfdbfe; }
body.dark .condition-refurbished { background: #713f12; color: #fef08a; }
body.dark .condition-not_working { background: #7f1d1d; color: #fecaca; }
body.dark .condition-unknown { background: #374151; color: #d1d5db; }

body.dark .formfactor-sodimm { background: #581c87; color: #e9d5ff; }
body.dark .formfactor-udimm { background: #1e3a8a; color: #bfdbfe; }
body.dark .formfactor-dimm { background: #134e4a; color: #99f6e4; }
body.dark .formfactor-camm { background: #831843; color: #fbcfe8; }
body.dark .formfactor-unknown { background: #374151; color: #d1d5db; }

body.dark .listingtype-bin { background: #14532d; color: #bbf7d0; }
body.dark .listingtype-auction { background: #78350f; color: #fde68a; }
body.dark .listingtype-best_offer { background: #1e3a8a; color: #bfdbfe; }
body.dark .listingtype-unknown { background: #374151; color: #d1d5db; }

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .filters-sidebar {
    position: static;
  }

  .results-topbar {
    grid-template-columns: 1fr;
  }

  .top-actions {
    justify-content: flex-start;
  }

  .filters-row {
    grid-template-columns: 1fr;
  }

  .range-row {
    flex-wrap: wrap;
    gap: 0.6rem;
  }

  .range-item {
    flex: 1 1 calc(50% - 0.3rem);
    min-width: 140px;
  }

  .table-wrap {
    display: none;
  }

  .mobile-cards {
    display: grid;
    width: 100%;
  }

  .table-meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .mobile-only {
    display: flex;
  }

  .desktop-only {
    display: none;
  }
}

@media (max-width: 600px) {
  .range-row {
    flex-direction: column;
    gap: 0.5rem;
  }

  .range-item {
    flex: 1 1 100%;
    width: 100%;
  }

  .range-inputs {
    width: 100%;
  }

  .range-inputs input {
    width: 50%;
  }

  .filters-row {
    gap: 0.5rem;
  }

  .chip-group {
    gap: 0.25rem;
  }

  .chip {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    min-height: 44px;
    min-width: 44px;
  }

  .warning-banner {
    font-size: 0.8rem;
    padding: 0.6rem 0.75rem;
  }

  .disclaimer {
    font-size: 0.75rem;
    padding: 0.75rem;
  }

  .footer-links {
    gap: 0.6rem;
  }

  .footer-links a {
    font-size: 0.8rem;
  }
}

@media (max-width: 400px) {
  .site-header h1 {
    font-size: 1.4rem;
  }

  .control-panel {
    padding: 0.75rem;
  }

  .results {
    padding: 0.75rem;
  }

  .mobile-card {
    width: 100%;
    padding: 0.75rem;
  }
}

.site-footer {
  margin-top: 2rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.disclaimer {
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem;
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.55;
  margin-top: 1rem;
}

.disclaimer strong {
  color: var(--text);
}

body.dark .disclaimer {
  background: var(--panel-soft);
  border-color: var(--border);
}

body.dark .disclaimer strong {
  color: var(--text);
}

.stale-banner {
  background: #fef3c7;
  border: 1px solid #f59e0b;
  color: #92400e;
  padding: 0.65rem 0.9rem;
  border-radius: 8px;
  margin-bottom: 0.75rem;
  font-size: 0.83rem;
}

body.dark .stale-banner {
  background: #78350f;
  border-color: #f59e0b;
  color: #fef08a;
}

.hidden {
  display: none;
}