.structure-family-navigation {
  display: grid;
  gap: 8px;
}

.structure-model-compatibility-state {
  display: none;
}

.structure-model-compatibility-state .structure-variant-option {
  position: absolute;
  top: 0;
  display: block;
  width: 1px;
  min-height: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

.structure-model-compatibility-state .structure-variant-icon,
.structure-model-compatibility-state .structure-variant-code,
.structure-model-compatibility-state .structure-variant-desc,
.structure-model-compatibility-state .help-icon {
  display: none;
}

.structure-family-choice {
  display: grid;
  grid-template-columns: 46px 28px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 58px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--bg-elev-2) 90%, transparent);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.structure-family-choice img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.structure-family-choice strong {
  font-size: 1.05rem;
  letter-spacing: 0.08em;
}

.structure-family-choice span {
  color: var(--text-muted);
  font-size: 0.76rem;
  line-height: 1.25;
}

.structure-family-choice:hover,
.structure-family-choice:focus-visible,
.structure-family-choice.is-active {
  border-color: color-mix(in srgb, var(--accent) 78%, white 8%);
  background: color-mix(in srgb, var(--accent) 10%, var(--bg-elev-2));
  outline: none;
}

.structure-family-choice.is-active {
  box-shadow: inset 3px 0 0 var(--accent);
}

.structure-configurator-overlay {
  position: absolute;
  right: 18px;
  bottom: 18px;
  left: 18px;
  z-index: 34;
  display: none;
  gap: 10px;
  max-width: min(850px, calc(100% - 36px));
  margin: 0 auto;
  padding: 14px;
  border: 1px solid color-mix(in srgb, var(--border) 74%, var(--accent));
  border-radius: 10px;
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(16px) saturate(1.1);
}

.structure-configurator-heading,
.structure-result-row,
.structure-catalog-header,
.structure-catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.structure-catalog-header,
.structure-catalog-toolbar,
.structure-catalog-layout,
.structure-catalog-search {
  min-width: 0;
}

.structure-configurator-heading > div,
.structure-result-row > div:first-child,
.structure-catalog-header > div {
  display: grid;
  gap: 2px;
}

.structure-configurator-kicker,
.structure-result-row span,
.structure-catalog-header span {
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.structure-configurator-heading strong {
  font-size: 0.88rem;
}

.structure-configurator-overlay .structure-catalog-open,
.structure-direct-toggle,
.structure-catalog-close {
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg-elev-2);
  color: var(--text);
  cursor: pointer;
}

.structure-configurator-overlay .structure-catalog-open,
.structure-direct-toggle {
  min-height: 34px;
  padding: 7px 11px;
  font-size: 0.75rem;
  font-weight: 700;
}

.structure-category-tabs,
.structure-options-strip {
  display: flex;
  gap: 7px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.structure-category-tabs button {
  flex: 0 0 auto;
  padding: 5px 9px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.73rem;
  font-weight: 750;
  cursor: pointer;
}

.structure-category-tabs button:hover,
.structure-category-tabs button:focus-visible,
.structure-category-tabs button.is-active {
  border-bottom-color: var(--accent);
  color: var(--text);
  outline: none;
}

.structure-options-strip {
  padding: 1px 1px 4px;
}

.structure-component-option {
  display: grid;
  flex: 0 0 min(168px, 42vw);
  gap: 2px;
  min-height: 52px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: color-mix(in srgb, var(--bg-elev-2) 92%, transparent);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: border-color 160ms ease, transform 160ms ease;
}

.structure-component-option strong {
  font-size: 0.76rem;
}

.structure-component-option small {
  color: var(--text-muted);
  font-size: 0.67rem;
}

.structure-component-option:hover,
.structure-component-option:focus-visible,
.structure-component-option.is-active {
  border-color: var(--accent);
  outline: none;
}

.structure-component-option.is-active {
  background: color-mix(in srgb, var(--accent) 12%, var(--bg-elev-2));
  box-shadow: inset 0 -2px 0 var(--accent);
}

.structure-component-option:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.structure-dependency-note {
  min-height: 1em;
  margin: -3px 0 0;
  color: var(--warning);
  font-size: 0.68rem;
}

.structure-result-code {
  font-size: 1.18rem;
  letter-spacing: 0.06em;
}

.structure-result-name {
  color: var(--text-muted);
  font-size: 0.72rem;
}

.structure-direct-selector {
  position: relative;
}

.structure-direct-popover {
  position: absolute;
  right: 0;
  bottom: calc(100% + 8px);
  z-index: 3;
  display: grid;
  gap: 7px;
  width: min(360px, 78vw);
  max-height: min(430px, 60vh);
  padding: 9px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-elev);
  box-shadow: var(--shadow);
}

.structure-direct-search,
.structure-direct-family,
.structure-catalog-search {
  min-height: 38px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg-elev-2);
  color: var(--text);
}

.structure-direct-results {
  display: grid;
  gap: 4px;
  overflow-y: auto;
}

.structure-direct-results button {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 8px;
  padding: 8px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.structure-direct-results button:hover,
.structure-direct-results button:focus-visible,
.structure-direct-results button.is-selected {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  outline: none;
}

.structure-direct-results button span {
  color: var(--text-muted);
  font-size: 0.72rem;
}

.structure-preview-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
}

.structure-metric {
  display: grid;
  grid-template-columns: minmax(115px, 1fr) minmax(100px, 1.3fr) 72px;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
}

.structure-metric.is-compact {
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto;
  align-items: stretch;
  gap: 1px;
  font-size: 0.6rem;
}

.structure-metric.is-compact .structure-metric-level {
  display: none;
}

.structure-metric.is-compact .structure-metric-track {
  width: 100%;
}

.structure-metric-label,
.structure-metric-level {
  color: var(--text-muted);
}

.structure-metric-level {
  text-align: right;
}

.structure-metric-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 3px;
}

.structure-metric-segment {
  height: 6px;
  border-radius: 2px;
  background: color-mix(in srgb, var(--border) 72%, transparent);
}

.structure-metric-segment.is-filled:nth-child(1),
.structure-metric-segment.is-filled:nth-child(2) { background: #42b878; }
.structure-metric-segment.is-filled:nth-child(3) { background: #d2bd3f; }
.structure-metric-segment.is-filled:nth-child(4) { background: #df853c; }
.structure-metric-segment.is-filled:nth-child(5) { background: #d9574f; }

.structure-metric-legend {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.65rem;
  line-height: 1.35;
}

.structure-catalog-drawer {
  position: absolute;
  inset: 10px;
  z-index: 48;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: color-mix(in srgb, var(--bg) 96%, transparent);
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(18px);
}

.structure-catalog-header h2 {
  margin: 0;
  font-size: 1.15rem;
}

.structure-catalog-close {
  width: 38px;
  height: 38px;
  font-size: 1.45rem;
}

.structure-catalog-toolbar {
  justify-content: flex-start;
}

.structure-catalog-search {
  flex: 1 1 100%;
  width: 100%;
}

.structure-catalog-layout {
  display: grid;
  grid-template-columns: minmax(380px, 0.78fr) minmax(460px, 1.22fr);
  gap: 10px;
  min-height: 0;
}

.structure-catalog-cards {
  display: block;
  overflow-x: hidden;
  overflow-y: auto;
  padding-right: 4px;
  scroll-behavior: smooth;
  scroll-padding-top: 4px;
}

.structure-catalog-family-group {
  display: grid;
  gap: 6px;
  padding: 0 0 10px;
  scroll-margin-top: 4px;
}

.structure-catalog-family-heading {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 3px 5px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  color: var(--text-muted);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.structure-catalog-family-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 4px;
}

.structure-catalog-card {
  display: grid;
  grid-template-columns: minmax(82px, 0.94fr) minmax(86px, 1.06fr);
  grid-template-rows: auto minmax(0, 1fr);
  gap: 2px 3px;
  min-width: 0;
  height: 118px;
  min-height: 104px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-elev);
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.structure-catalog-card:hover,
.structure-catalog-card:focus-visible,
.structure-catalog-card.is-selected,
.structure-catalog-card.is-preview {
  border-color: var(--accent);
  outline: none;
}

.structure-catalog-card.is-selected {
  box-shadow: inset 0 -3px 0 var(--accent);
}

.structure-catalog-card.is-preview {
  background: color-mix(in srgb, var(--accent) 9%, var(--bg-elev));
}

.structure-catalog-image-frame {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 80px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--border) 68%, transparent);
  border-radius: 6px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 4%, transparent), transparent),
    var(--bg-elev-2);
}

.structure-catalog-image-frame img {
  display: block;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  max-height: 100%;
  object-fit: contain;
}

.structure-catalog-image-frame.is-missing::after,
.structure-catalog-image-frame:has(img.is-missing)::after {
  content: "—";
  color: var(--text-muted);
  font-size: 1.4rem;
}

.structure-catalog-card-copy {
  position: relative;
  display: grid;
  grid-column: 2;
  grid-row: 1;
  gap: 0;
  padding-right: 0;
  line-height: 1.15;
}

.structure-catalog-card-copy span {
  color: var(--text-muted);
  font-size: 0.7rem;
  overflow-wrap: anywhere;
  white-space: normal;
}

.structure-catalog-card-copy:has(.structure-catalog-premium-badge) {
  padding-right: 42px;
}

.structure-catalog-card-copy .structure-catalog-premium-badge {
  position: absolute;
  top: 0;
  right: 0;
  display: inline-flex;
  align-items: center;
  min-height: 18px;
  padding: 2px 5px;
  border: 1px solid color-mix(in srgb, var(--accent) 62%, var(--border));
  border-radius: 4px;
  background: color-mix(in srgb, var(--accent) 12%, var(--bg-elev-2));
  color: var(--accent-2);
  font-size: 0.58rem;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
}

.structure-catalog-card-copy .structure-catalog-premium-badge:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.structure-catalog-card > .structure-material-usage-list.is-compact {
  grid-column: 2;
  grid-row: 2;
  align-self: start;
}

.structure-catalog-detail {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 7px;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.structure-catalog-detail h3 {
  margin: 2px 0 0;
  font-size: 1rem;
}

.structure-catalog-views-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 7px;
  min-height: 0;
}

.structure-catalog-views-grid figure {
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  min-width: 0;
  min-height: 0;
  margin: 0;
}

.structure-catalog-views-grid .structure-catalog-image-frame {
  width: 100%;
  height: 100%;
  min-height: 0;
}

.structure-catalog-views-grid .structure-catalog-cross-section {
  grid-column: 1;
  grid-row: 1 / -1;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 5px;
}
.structure-catalog-main-exploded { grid-column: 2; grid-row: 1; }
.structure-catalog-base-pvc { grid-column: 2; grid-row: 2; }

.structure-cross-section-references {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.structure-cross-section-reference {
  fill: currentColor;
  stroke: var(--bg-elev-2);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.structure-cross-section-reference[data-part="base"] { color: #5da8ff; }
.structure-cross-section-reference[data-part="acrylic"] { color: #35d3dc; }
.structure-cross-section-reference[data-part="pvc"] { color: #a28bff; }
.structure-cross-section-reference[data-part="front"] { color: #42c99a; }
.structure-cross-section-reference[data-part="cover"],
.structure-cross-section-reference[data-part="body"] { color: #ff9f43; }
.structure-cross-section-reference[data-part="channel"] { color: #f0c44c; }

.structure-catalog-card > .structure-catalog-image-frame {
  grid-column: 1;
  grid-row: 1 / -1;
  width: 100%;
  height: 100%;
  min-height: 90px;
}

.structure-part-legend {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3px 8px;
  margin: 0;
  padding: 5px 6px;
  list-style: none;
  border: 1px solid color-mix(in srgb, var(--border) 68%, transparent);
  border-radius: 6px;
  background: var(--bg-elev-2);
  color: var(--text-muted);
  font-size: 0.64rem;
  line-height: 1.1;
}

.structure-part-legend li {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 5px;
}

.structure-part-legend-swatch {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 1px color-mix(in srgb, currentColor 35%, var(--bg-elev-2));
}

.structure-part-legend [data-part="base"] { color: #5da8ff; }
.structure-part-legend [data-part="acrylic"] { color: #35d3dc; }
.structure-part-legend [data-part="pvc"] { color: #a28bff; }
.structure-part-legend [data-part="front"] { color: #42c99a; }
.structure-part-legend [data-part="cover"],
.structure-part-legend [data-part="body"] { color: #ff9f43; }
.structure-part-legend [data-part="channel"] { color: #f0c44c; }

.structure-part-legend li > span:last-child {
  overflow: hidden;
  color: var(--text-muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.structure-material-usage-list {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 14px;
}

.structure-material-usage-list.is-compact {
  gap: 8px;
  min-height: 14px;
  margin-top: 6px;
  line-height: 1.2;
}

.structure-material-usage {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-muted);
  font-size: 0.67rem;
  font-weight: 700;
}

.structure-material-check {
  display: inline-grid;
  place-items: center;
  width: 14px;
  height: 14px;
  border: 1px solid color-mix(in srgb, var(--border) 85%, var(--text-muted));
  border-radius: 3px;
  color: #062318;
  font-size: 0.65rem;
  line-height: 1;
}

.structure-material-usage[data-used="true"] .structure-material-check {
  border-color: var(--accent);
  background: var(--accent);
}

.structure-material-usage-list.is-compact .structure-material-usage {
  gap: 3px;
  font-size: 0.6rem;
}

.structure-material-usage-list.is-compact .structure-material-check {
  width: 12px;
  height: 12px;
  font-size: 0.58rem;
}

.structure-catalog-detail-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.structure-catalog-select-model {
  flex: 0 0 auto;
  min-height: 38px;
  padding: 8px 16px;
  border: 1px solid color-mix(in srgb, var(--accent) 76%, white 10%);
  border-radius: 7px;
  background: var(--accent);
  color: #062318;
  font-size: 0.76rem;
  font-weight: 800;
  cursor: pointer;
}

.structure-catalog-select-model:hover,
.structure-catalog-select-model:focus-visible {
  filter: brightness(1.06);
  outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent);
  outline-offset: 2px;
}

body.structure-catalog-open .structure-configurator-overlay {
  visibility: hidden;
}

body.catalog-capture-mode {
  overflow: hidden;
  background: var(--bg);
}

body.catalog-capture-mode .account-header-block,
body.catalog-capture-mode .sidebar,
body.catalog-capture-mode .panel-toggle-tab,
body.catalog-capture-mode .viewer-bottom-panel,
body.catalog-capture-mode .viewer-primary-toolbar,
body.catalog-capture-mode .camera-widget,
body.catalog-capture-mode .preview-floating-card,
body.catalog-capture-mode .viewer-dock-card,
body.catalog-capture-mode [class^="onboarding-"],
body.catalog-capture-mode [class*=" onboarding-"],
body.catalog-capture-mode .structure-configurator-overlay,
body.catalog-capture-mode .structure-catalog-drawer {
  display: none !important;
}

body.catalog-capture-mode .app-shell {
  display: block;
  width: 100vw;
  height: 100vh;
  padding: 0;
}

body.catalog-capture-mode .viewer-area,
body.catalog-capture-mode .viewer-stage,
body.catalog-capture-mode .viewer-primary-host,
body.catalog-capture-mode .viewer-surface,
body.catalog-capture-mode .viewport {
  width: 100%;
  height: 100%;
  min-height: 100%;
}

@media (max-width: 1050px) {
  .structure-catalog-layout {
    grid-template-columns: minmax(300px, 0.84fr) minmax(380px, 1.16fr);
  }

  .structure-catalog-cards {
    display: block;
  }

  .structure-catalog-family-grid {
    grid-template-columns: minmax(0, 1fr);
  }

}

@media (max-width: 760px) {
  .structure-configurator-overlay {
    right: 8px;
    bottom: 8px;
    left: 8px;
    max-width: calc(100% - 16px);
    padding: 10px;
  }

  .structure-preview-metrics {
    display: none;
  }

  .structure-result-row {
    align-items: end;
  }

  .structure-direct-toggle {
    max-width: 44vw;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .structure-catalog-drawer {
    position: fixed;
    inset: 4px;
    z-index: 1000;
    border-radius: 8px;
    padding: 10px;
  }

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

  .structure-catalog-cards {
    display: block;
    min-height: 164px;
    max-height: 190px;
    overflow: auto;
  }

  .structure-catalog-family-group {
    width: max-content;
    min-width: 100%;
  }

  .structure-catalog-family-grid {
    display: flex;
    width: max-content;
  }

  .structure-catalog-family-grid .structure-catalog-card {
    flex: 0 0 300px;
  }

  .structure-catalog-detail {
    min-height: 0;
    overflow-y: auto;
    padding-right: 2px;
  }

  .structure-catalog-views-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    min-height: 320px;
  }

  .structure-catalog-detail-footer {
    position: sticky;
    bottom: 0;
    z-index: 2;
    align-items: stretch;
    flex-direction: column;
    padding: 7px 0 0;
    background: var(--bg);
  }

  .structure-catalog-select-model {
    width: 100%;
  }

  .structure-metric {
    grid-template-columns: minmax(100px, 1fr) minmax(90px, 1fr) 65px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .structure-family-choice,
  .structure-component-option {
    transition: none;
  }
}