.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.boombox-hall {
  height: 100svh;
  min-height: 42rem;
  overflow: hidden;
}

.blueprint-shell {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: calc(100svh - 5.6rem - (var(--frame) * 2));
  border-top: 1px solid var(--grout);
  background: var(--milk);
  grid-template-rows: auto minmax(0, 1fr);
}

.project-strip {
  position: relative;
  z-index: 8;
  display: grid;
  min-height: 6.7rem;
  border-bottom: 1px solid var(--cobalt);
  background: var(--milk);
  grid-template-columns: minmax(19rem, 1.1fr) minmax(15rem, 0.8fr) auto auto;
  align-items: stretch;
}

.project-index,
.project-status,
.circuit-filters,
.parts-toggle {
  min-width: 0;
  border-right: 1px solid var(--cobalt);
}

.project-index {
  display: grid;
  padding: 0 clamp(1rem, 2.4vw, 2.4rem);
  grid-template-columns: auto 1px minmax(0, 1fr);
  gap: clamp(0.9rem, 2vw, 1.8rem);
  align-items: center;
}

.project-index > p,
.project-index div > p,
.project-status p,
.parts-toggle span,
.circuit-filters button,
.diagram-toolbar button,
.parts-drawer-header p,
.part-copy small,
.locate-label,
.part-amazon,
.affiliate-disclosure,
.diagram-status {
  font-family: Arial, Helvetica, sans-serif;
}

.project-index > p,
.project-index div > p,
.parts-toggle span,
.parts-drawer-header p,
.part-copy small,
.locate-label {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.25;
  text-transform: uppercase;
}

.project-index > p,
.project-index div > p {
  margin: 0;
}

.project-index > span {
  width: 1px;
  height: 3.5rem;
  background: var(--cobalt);
}

.project-index h1 {
  max-width: none;
  margin: 0 0 0.3rem;
  font-size: clamp(2rem, 3.4vw, 3.65rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 0.92;
  text-wrap: nowrap;
}

.project-status {
  display: grid;
  align-content: center;
  gap: 0.45rem;
  padding: 1rem clamp(1rem, 2vw, 1.8rem);
}

.project-status p {
  max-width: 48ch;
  margin: 0;
  color: var(--cobalt-copy);
  font-size: 0.84rem;
  line-height: 1.35;
}

.project-status p:first-child {
  color: var(--cobalt);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-link {
  text-decoration-color: var(--mustard-active);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.case-link:hover,
.case-link:focus-visible {
  color: var(--cobalt);
  text-decoration-thickness: 2px;
}

.case-link:focus-visible {
  outline: 2px solid var(--cobalt);
  outline-offset: 3px;
}

.circuit-filters {
  display: flex;
  gap: 0.45rem;
  align-items: center;
  padding: 0.85rem;
}

.circuit-filter-label {
  display: grid;
  min-width: 6.6rem;
  margin: 0 0.35rem 0 0;
  gap: 0.18rem;
  color: var(--cobalt);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.1;
}

.circuit-filter-label span {
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.circuit-filter-label small {
  color: var(--cobalt-copy);
  font-size: 0.62rem;
}

.circuit-filters button {
  position: relative;
  min-height: 2.65rem;
  padding: 0.7rem 0.8rem;
  overflow: hidden;
  border: 1px solid var(--cobalt);
  background: var(--milk);
  color: var(--cobalt);
  cursor: pointer;
  font-size: 0.68rem;
  font-weight: 800;
  white-space: nowrap;
}

.circuit-filters button::after {
  position: absolute;
  right: -1px;
  bottom: -1px;
  left: -1px;
  height: 0.24rem;
  background: var(--mustard);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
}

.circuit-filters button:hover,
.circuit-filters button:focus-visible,
.circuit-filters button.is-active {
  background: var(--cobalt);
  color: var(--milk);
}

.circuit-filters button:hover::after,
.circuit-filters button:focus-visible::after,
.circuit-filters button.is-active::after {
  transform: scaleX(1);
}

.circuit-filters button:focus-visible,
.parts-toggle:focus-visible,
.diagram-toolbar button:focus-visible,
.parts-close:focus-visible,
.part-locate:focus-visible,
.part-amazon:focus-visible {
  outline: 2px solid var(--cobalt);
  outline-offset: 3px;
}

.diagram-only-control:disabled {
  cursor: wait;
  opacity: 0.45;
}

.parts-toggle {
  display: grid;
  min-width: 7.8rem;
  padding: 0 1.25rem;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  background: var(--cobalt);
  color: var(--milk);
  text-decoration: none;
}

.parts-toggle strong {
  font-size: 2rem;
  font-weight: 500;
  line-height: 1;
}

.parts-toggle:hover,
.parts-toggle:focus-visible,
.parts-toggle[aria-expanded="true"] {
  background: var(--mustard);
  color: var(--cobalt);
}

.mobile-experience-note {
  display: none;
}

.blueprint-workspace,
.diagram-region,
.diagram-canvas {
  min-width: 0;
  min-height: 0;
}

.blueprint-workspace {
  position: relative;
  --diagram-control-safe-offset: 2.5rem;
  overflow: hidden;
}

.diagram-region {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #f4f1e7;
}

.diagram-canvas {
  position: absolute;
  inset: 0;
  margin: 0;
  overflow: hidden;
  touch-action: none;
  user-select: none;
}

@media (min-width: 821px) {
  .diagram-canvas {
    left: var(--diagram-control-safe-offset);
  }
}

.diagram-canvas.is-draggable {
  cursor: grab;
}

.diagram-canvas.is-panning {
  cursor: grabbing;
}

.diagram-stage {
  width: 100%;
  height: 100%;
  transform-origin: 0 0;
}

.diagram-stage.is-animating {
  transition: transform 420ms var(--ease-out);
}

.diagram-canvas.is-enhanced .diagram-stage {
  position: absolute;
  top: 0;
  left: 0;
  width: 1920px;
  height: 1000px;
  will-change: transform;
}

.diagram-fallback {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center bottom;
}

.diagram-stage > svg {
  display: block;
  width: 1920px;
  height: 1000px;
  overflow: visible;
}

.diagram-toolbar {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 5;
  display: grid;
  border: 1px solid var(--cobalt);
  background: var(--milk);
}

.diagram-toolbar button {
  display: grid;
  width: 4.25rem;
  min-height: 3.55rem;
  padding: 0.5rem 0.35rem;
  place-items: center;
  border: 0;
  border-bottom: 1px solid var(--cobalt);
  background: var(--milk);
  color: var(--cobalt);
  cursor: pointer;
  font-size: 0.62rem;
  font-weight: 800;
  line-height: 1.1;
  text-transform: uppercase;
}

.diagram-toolbar button:last-child {
  border-bottom: 0;
}

.diagram-toolbar button span {
  font-size: 1.35rem;
  font-weight: 400;
}

.diagram-toolbar button:hover:not(:disabled),
.diagram-toolbar button:focus-visible:not(:disabled) {
  background: var(--mustard);
}

.diagram-status {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  z-index: 4;
  max-width: 25rem;
  margin: 0;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--cobalt);
  background: var(--milk);
  color: var(--cobalt-copy);
  font-size: 0.7rem;
  line-height: 1.4;
}

.diagram-status:empty {
  display: none;
}

.parts-drawer {
  position: absolute;
  inset: 0 0 0 auto;
  z-index: 12;
  display: flex;
  width: min(31rem, 39vw);
  min-width: 25rem;
  flex-direction: column;
  overflow: hidden;
  border-left: 1px solid var(--cobalt);
  background: var(--milk);
  color: var(--cobalt);
  transform: translateX(102%);
  visibility: hidden;
}

.parts-drawer.is-open,
.parts-drawer:target {
  transform: translateX(0);
  visibility: visible;
}

.parts-drawer-header {
  display: flex;
  min-height: 5.75rem;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem 0.8rem 1.5rem;
  border-bottom: 1px solid var(--cobalt);
}

.parts-drawer-header p,
.parts-drawer-header h2 {
  margin: 0;
}

.parts-drawer-header p {
  margin-bottom: 0.35rem;
}

.parts-drawer-header h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 0.95;
}

.parts-drawer-header h2 span {
  color: var(--mustard-active);
}

.parts-close {
  display: none;
  width: 2.75rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--cobalt);
  color: var(--cobalt);
}

.blueprint-shell.is-enhanced .parts-close {
  display: grid;
}

.parts-close span,
.parts-close span::after {
  display: block;
  width: 1.25rem;
  height: 1px;
  background: currentColor;
  content: "";
  transform: rotate(45deg);
}

.parts-close span::after {
  transform: rotate(90deg);
}

.parts-close:hover,
.parts-close:focus-visible {
  background: var(--mustard);
}

.parts-list {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  overflow-y: auto;
  list-style: none;
  overscroll-behavior: contain;
}

.part-entry {
  position: relative;
  display: grid;
  border-bottom: 1px solid var(--grout);
  grid-template-columns: minmax(0, 1fr) auto;
}

.part-entry::after {
  position: absolute;
  inset: 0;
  border: 2px solid transparent;
  content: "";
  pointer-events: none;
}

.part-entry.is-related::after {
  border-color: var(--cobalt);
}

.part-entry.is-selected::after {
  border-color: var(--mustard);
}

.part-locate {
  display: grid;
  min-width: 0;
  min-height: 6.45rem;
  padding: 0.55rem 0.45rem 0.55rem 0.8rem;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  grid-template-columns: 2rem 4.7rem minmax(0, 1fr);
  gap: 0.65rem;
  align-items: center;
  text-align: left;
}

.part-locate:hover,
.part-locate:focus-visible {
  background: rgb(18 63 152 / 7%);
}

.part-number {
  align-self: start;
  padding-top: 0.55rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
}

.part-locate img {
  display: block;
  width: 4.7rem;
  height: 4.7rem;
  object-fit: contain;
}

.part-copy {
  min-width: 0;
}

.part-copy small,
.part-copy strong {
  display: block;
}

.part-copy small {
  margin-bottom: 0.35rem;
  color: var(--cobalt-copy);
  letter-spacing: 0.08em;
}

.part-copy strong {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.95rem;
  line-height: 1.25;
}

.locate-label {
  grid-column: 3;
  align-self: end;
  margin-top: -1.4rem;
  color: var(--cobalt-copy);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
}

.part-amazon {
  position: relative;
  z-index: 2;
  display: flex;
  width: 6rem;
  padding: 0.8rem 0.65rem 1rem;
  flex-direction: column;
  gap: 0.6rem;
  align-items: center;
  justify-content: center;
  border-left: 1px solid var(--grout);
  background: #efece3;
  box-shadow: inset 0 -0.18rem #e99016;
  color: #17212b;
  font-size: 0.6rem;
  font-weight: 800;
  line-height: 1.1;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

.amazon-label {
  display: grid;
  gap: 0.12rem;
  place-items: center;
  letter-spacing: 0.08em;
}

.amazon-label strong {
  position: relative;
  padding-bottom: 0.38rem;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  line-height: 1;
}

.amazon-label strong::after {
  position: absolute;
  right: 0.15rem;
  bottom: 0;
  left: 0.15rem;
  height: 0.32rem;
  border-bottom: 2px solid #e99016;
  border-radius: 0 0 50% 50%;
  content: "";
  transform: rotate(2deg);
}

.amazon-arrow {
  display: grid;
  width: 1.55rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid #e99016;
  color: #c97708;
  font-size: 0.82rem;
  line-height: 1;
}

.part-amazon:hover,
.part-amazon:focus-visible {
  background: #f3d7a6;
  color: #17212b;
}

.part-amazon:hover .amazon-label strong::after,
.part-amazon:focus-visible .amazon-label strong::after {
  border-color: #17212b;
}

.part-amazon:hover .amazon-arrow,
.part-amazon:focus-visible .amazon-arrow {
  border-color: #17212b;
  color: #17212b;
}

.affiliate-disclosure {
  margin: auto 0 0;
  padding: 0.75rem 1.5rem 0.8rem;
  border-top: 1px solid var(--cobalt);
  color: var(--cobalt-copy);
  font-size: 0.7rem;
  line-height: 1.45;
}

.parts-scrim {
  position: absolute;
  inset: 0;
  z-index: 11;
  border: 0;
  background: rgb(18 63 152 / 22%);
}

.blueprint-shell:fullscreen {
  width: 100%;
  height: 100%;
  background: var(--milk);
}

.blueprint-shell:fullscreen .blueprint-workspace {
  min-height: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .circuit-filters button {
    transition:
      background-color 180ms var(--ease-out),
      color 180ms var(--ease-out);
  }

  .circuit-filters button::after {
    transition: transform 240ms var(--ease-out);
  }

  .circuit-filters.is-ready button::after {
    animation: circuit-filter-invite 680ms var(--ease-out) 1;
  }

  .circuit-filters.is-ready button:nth-of-type(2)::after {
    animation-delay: 90ms;
  }

  .circuit-filters.is-ready button:nth-of-type(3)::after {
    animation-delay: 180ms;
  }

  .circuit-filters.is-ready button:nth-of-type(4)::after {
    animation-delay: 270ms;
  }

  @keyframes circuit-filter-invite {
    0%,
    100% {
      transform: scaleX(0);
    }

    38%,
    72% {
      transform: scaleX(1);
    }
  }

  .parts-drawer {
    transition:
      transform 420ms var(--ease-out),
      visibility 0s linear 420ms;
  }

  .parts-drawer.is-open,
  .parts-drawer:target {
    transition:
      transform 420ms var(--ease-out),
      visibility 0s;
  }

  .diagram-target.is-locating .diagram-target-region {
    animation: boombox-target-pulse 820ms var(--ease-out) 2;
  }

  @keyframes boombox-target-pulse {
    0%,
    100% {
      fill: rgb(228 177 42 / 5%);
      stroke: #e4b12a;
      stroke-width: 3;
    }

    42% {
      fill: rgb(228 177 42 / 24%);
      stroke: #e4b12a;
      stroke-width: 10;
    }
  }
}

@media (max-width: 1220px) {
  .project-strip {
    grid-template-columns: minmax(18rem, 1fr) minmax(14rem, 0.8fr) auto;
  }

  .circuit-filters {
    grid-column: 1 / span 2;
    grid-row: 2;
    justify-content: flex-start;
    border-top: 1px solid var(--cobalt);
  }

  .parts-toggle {
    grid-column: 3;
    grid-row: 1 / span 2;
  }

  .project-status {
    border-right: 0;
  }
}

@media (max-width: 820px) {
  .boombox-hall {
    height: auto;
    min-height: 100svh;
    overflow: visible;
  }

  .boombox-page .hall-header {
    min-height: 4.8rem;
    padding: 0.65rem 1rem;
  }

  .boombox-page .home-nav {
    gap: 0.7rem;
    margin-right: 0.75rem;
    font-size: 0.66rem;
  }

  .blueprint-shell {
    min-height: 0;
    grid-template-rows: auto auto auto;
  }

  .project-strip {
    min-height: 4.6rem;
    grid-template-columns: minmax(0, 1fr);
  }

  .project-index {
    min-height: 4.6rem;
    padding: 0 0.85rem;
    gap: 0.75rem;
  }

  .project-index > p,
  .project-index div > p {
    font-size: 0.58rem;
  }

  .project-index > span {
    height: 2.6rem;
  }

  .project-index h1 {
    font-size: clamp(1.7rem, 7vw, 2.45rem);
  }

  .project-status {
    display: none;
  }

  .circuit-filters,
  .parts-toggle {
    display: none;
  }

  .mobile-experience-note {
    display: grid;
    padding: 1rem;
    border-bottom: 1px solid var(--cobalt);
    background: var(--mustard);
    color: var(--cobalt);
    gap: 0.85rem;
  }

  .mobile-experience-note p {
    max-width: 68ch;
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1rem;
    line-height: 1.45;
  }

  .mobile-experience-note p:first-child {
    margin-bottom: 0.2rem;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .mobile-experience-note a {
    display: inline-flex;
    min-height: 2.75rem;
    width: max-content;
    padding: 0.65rem 0;
    gap: 0.35rem;
    align-items: center;
    color: inherit;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-underline-offset: 0.25rem;
  }

  .mobile-experience-note a:focus-visible {
    outline: 2px solid var(--cobalt);
    outline-offset: 3px;
  }

  .blueprint-workspace {
    display: grid;
    overflow: visible;
    grid-template-rows: clamp(24rem, 62svh, 34rem) auto;
  }

  .diagram-region {
    position: relative;
    inset: auto;
    height: clamp(24rem, 62svh, 34rem);
  }

  .diagram-canvas {
    touch-action: pan-y;
  }

  .diagram-toolbar {
    top: 0.65rem;
    left: 0.65rem;
    display: flex;
  }

  .diagram-toolbar button {
    width: 3.35rem;
    min-height: 2.75rem;
    border-bottom: 0;
    font-size: 0.52rem;
  }

  .diagram-toolbar [data-zoom-in],
  .diagram-toolbar [data-zoom-out],
  .diagram-toolbar [data-reset],
  .diagram-toolbar [data-fullscreen] {
    display: none !important;
  }

  .diagram-toolbar button span {
    font-size: 1.05rem;
  }

  .diagram-status {
    right: 0.65rem;
    bottom: 0.65rem;
    max-width: calc(100% - 1.3rem);
  }

  .parts-drawer {
    position: relative;
    inset: auto;
    z-index: 1;
    width: 100%;
    min-width: 0;
    max-height: none;
    overflow: visible;
    border-top: 1px solid var(--cobalt);
    border-left: 0;
    transform: none;
    visibility: visible;
  }

  .parts-drawer.is-open,
  .parts-drawer:target {
    transform: none;
    visibility: visible;
  }

  .parts-drawer-header {
    min-height: 5rem;
  }

  .parts-close,
  .parts-scrim {
    display: none !important;
  }

  .parts-list {
    overflow: visible;
    overscroll-behavior: auto;
  }

  #parts-title {
    scroll-margin-top: 1rem;
  }

  .part-locate {
    min-height: 6.2rem;
    cursor: default;
  }

  .part-locate:disabled {
    opacity: 1;
  }

  .part-locate:hover,
  .part-locate:focus-visible {
    background: transparent;
  }

  .locate-label {
    display: none;
  }

  .diagram-target {
    cursor: default;
    pointer-events: none;
  }

  .part-entry.is-related::after,
  .part-entry.is-selected::after {
    border-color: transparent;
  }

  .diagram-target.is-related .diagram-target-region,
  .diagram-target.is-selected .diagram-target-region,
  .diagram-target.is-locating .diagram-target-region {
    fill: transparent;
    stroke: transparent;
  }
}

@media (max-width: 520px) {
  .boombox-page .home-nav {
    max-width: 15rem;
    overflow-x: auto;
  }

  .project-index {
    grid-template-columns: auto 1px minmax(0, 1fr);
  }

  .project-index h1 {
    font-size: 1.7rem;
  }

  .project-index div > p {
    display: none;
  }

  .diagram-toolbar button {
    width: 3.35rem;
  }

  .part-locate {
    grid-template-columns: 1.6rem 3.9rem minmax(0, 1fr);
    gap: 0.45rem;
    padding-left: 0.55rem;
  }

  .part-locate img {
    width: 3.9rem;
    height: 3.9rem;
  }

  .part-amazon {
    width: 5.3rem;
    padding: 0.65rem 0.45rem 0.85rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .parts-drawer {
    transition: none;
  }

  .diagram-stage.is-animating {
    transition: none;
  }

  .diagram-target.is-locating .diagram-target-region {
    fill: rgb(228 177 42 / 22%);
    stroke: #e4b12a;
    stroke-width: 7;
  }
}

@media (forced-colors: active) {
  .circuit-filters button::after {
    background: Highlight;
  }

  .diagram-target.is-related .diagram-target-region,
  .diagram-target.is-selected .diagram-target-region,
  .diagram-target.is-locating .diagram-target-region {
    fill: transparent;
    stroke: Highlight;
  }

  .part-entry.is-related::after,
  .part-entry.is-selected::after {
    border-color: Highlight;
  }
}