:root {
  color-scheme: dark;
  --bg: #101010;
  --panel: #171717;
  --panel-2: #202020;
  --field: #0f0f0f;
  --line: #3f3f3f;
  --line-soft: #292929;
  --text: #c9c9c9;
  --muted: #9a9a9a;
  --hot: #a8a8a8;
  --cyan: #8d8d8d;
  --red: #9a8f8f;
  --green: #7ea65a;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  overflow-anchor: none;
}

body {
  margin: 0;
  width: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "Menlo", "Monaco", "Courier New", monospace;
  font-size: 12px;
  line-height: 1.35;
}

:where(button, select, input[type="number"], .custom-select-button, .custom-select-option) {
  font-size: 11px;
}

button,
input,
select {
  font: inherit;
}

button,
select,
input[type="number"] {
  background: var(--field);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 0;
  min-height: 21px;
}

button {
  padding: 0 5px;
  line-height: 1.15;
  cursor: pointer;
}

button:hover,
button.active {
  border-color: var(--cyan);
  background: #232323;
  color: #d8d8d2;
}

button:active {
  background: #1c2428;
}

select,
input[type="number"] {
  width: 100%;
  padding: 0 6px;
}

.native-select-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.custom-select {
  position: relative;
  width: 100%;
  margin-top: 3px;
}

.custom-select-button {
  position: relative;
  width: 100%;
  min-height: 21px;
  padding: 0 20px 0 6px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--field);
  color: var(--text);
  text-align: left;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  cursor: pointer;
}

.custom-select-button::after {
  content: "v";
  position: absolute;
  right: 7px;
  top: 50%;
  transform: translateY(-54%);
  color: var(--muted);
  font-size: 9px;
}

.custom-select-button:hover,
.custom-select.open .custom-select-button {
  border-color: var(--cyan);
  background: #232323;
  color: #d8d8d2;
}

.custom-select-menu {
  position: fixed;
  z-index: 200;
  min-width: 120px;
  max-height: 260px;
  overflow: auto;
  border: 1px solid var(--cyan);
  background: #101010;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.48);
}

.custom-select-option {
  min-height: 21px;
  padding: 4px 7px;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}

.custom-select-option:hover,
.custom-select-option.active {
  background: #282828;
  color: #d8d8d2;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--cyan);
}

@media (hover: hover) and (pointer: fine) {
input[type="range"] {
  height: 15px;
  margin: 3px 0 0;
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid #4b4b4b;
  background:
    linear-gradient(90deg, #8d8d8d 0 var(--fill, 50%), #232323 var(--fill, 50%) 100%);
  box-shadow: 0 0 0 1px #080808 inset;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 13px;
  background: transparent;
  border: 0;
}

input[type="range"]::-webkit-slider-thumb {
  width: 0;
  height: 13px;
  margin-top: 0;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 0;
  border-radius: 0;
}

input[type="range"]:hover,
input[type="range"]:focus-visible {
  border-color: var(--cyan);
  background:
    linear-gradient(90deg, #b6b6b6 0 var(--fill, 50%), #2e2e2e var(--fill, 50%) 100%);
}

input[type="range"]::-moz-range-track {
  height: 13px;
  background: transparent;
  border: 0;
}

input[type="range"]::-moz-range-thumb {
  width: 0;
  height: 13px;
  background: transparent;
  border: 0;
  border-radius: 0;
}
}

@media (hover: none), (pointer: coarse), (max-width: 780px) {
  input[type="range"] {
    min-height: 28px;
  }
}

.app {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  position: fixed;
  inset: 0;
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
  overscroll-behavior: none;
  overflow-anchor: none;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 10px 10px 0;
  padding: 8px 10px;
  border: 1px solid var(--line);
  background: var(--panel);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
}

h2 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 28px;
  margin: -7px -7px 7px;
  padding: 0 6px 0 8px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--line-soft);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: #cfcfcf;
  letter-spacing: 0;
}

.section-toggle {
  display: none;
}

.collapsible > h2 {
  cursor: pointer;
  user-select: none;
}

.collapsible > h2::after {
  content: "-";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  margin-left: 8px;
  border: 1px solid var(--line-soft);
  background: var(--field);
  color: var(--muted);
  font-weight: 400;
}

.collapsible > h2:hover::after,
.collapsible > h2:focus-visible::after {
  border-color: var(--cyan);
  color: var(--text);
}

.collapsible.collapsed {
  padding-bottom: 0;
}

.collapsible.collapsed h2 {
  margin-bottom: 0;
  border-bottom: 0;
}

.collapsible.collapsed > h2::after {
  content: "+";
}

.collapsible.collapsed > :not(h2) {
  display: none;
}

.topbar p,
.hint,
.status-row {
  color: var(--muted);
}

.topbar p {
  margin-top: 2px;
}

.top-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 4px;
}

.export-select {
  display: grid;
  grid-template-columns: auto 170px;
  align-items: center;
  gap: 5px;
  margin: 0;
  color: var(--muted);
}

.export-select select {
  margin-top: 0;
}

.export-select .custom-select {
  margin-top: 0;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(520px, 1fr) 318px;
  align-items: stretch;
  min-height: 0;
  overflow: hidden;
  overscroll-behavior: none;
  overflow-anchor: none;
}

.panel {
  background: var(--panel);
  border-left: 1px solid var(--line);
  overflow: auto;
  min-height: 0;
  overscroll-behavior: contain;
  overflow-anchor: none;
}

.panel.tools {
  border-right: 0;
}

.panel section {
  margin: 6px;
  padding: 7px;
  background: #141414;
  border: 1px solid var(--line-soft);
}

.panel section + section {
  margin-top: 6px;
}

.panel section:last-child {
  margin-bottom: 8px;
}

.panel section {
  border-bottom: 1px solid var(--line);
}

label {
  display: block;
  margin: 5px 0;
  color: var(--muted);
}

label input,
label select {
  margin-top: 3px;
}

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

.button-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  margin-top: 8px;
}

.generator-action {
  grid-template-columns: 1fr;
  margin-top: 0;
  margin-bottom: 8px;
}

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

#layerButtons {
  grid-template-columns: 1fr;
}

.stage {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  overflow-anchor: none;
  scrollbar-gutter: stable;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 9px;
  padding: 14px 14px 44px;
  scroll-padding-bottom: 72px;
  background:
    linear-gradient(#171717 1px, transparent 1px),
    linear-gradient(90deg, #171717 1px, transparent 1px),
    #0d0d0d;
  background-size: 20px 20px;
}

.stage::after {
  content: "";
  flex: 0 0 28px;
  width: 100%;
}

.canvas-frame {
  position: relative;
  width: min(100%, 1024px);
  aspect-ratio: 2 / 1;
  border: 1px solid #4a5259;
  background: #050607;
  box-shadow: 0 0 0 1px #000 inset, 0 0 0 2px #171717;
}

#scoreCanvas,
#overlayCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  touch-action: none;
}

#overlayCanvas {
  pointer-events: none;
}

.status-row {
  display: flex;
  width: min(100%, 1024px);
  justify-content: space-between;
  gap: 12px;
  font-family: Menlo, Consolas, monospace;
  font-size: 11px;
}

.playbar {
  display: grid;
  grid-template-columns: 68px minmax(180px, 1fr) 190px 62px;
  align-items: center;
  gap: 8px;
  width: min(100%, 1024px);
  padding: 7px;
  border: 1px solid var(--line);
  background: #141414;
}

.playbar label {
  display: grid;
  grid-template-columns: 46px minmax(70px, 1fr);
  align-items: center;
  gap: 6px;
  margin: 0;
  white-space: nowrap;
}

.playbar input[type="range"] {
  margin-top: 0;
}

#playReadout {
  color: var(--muted);
  font-size: 11px;
  text-align: right;
}

.scan-windows {
  --preview-h: 150px;
  display: grid;
  grid-template-columns: 160px 76px 76px minmax(300px, 1fr);
  gap: 8px;
  width: min(100%, 1024px);
  justify-content: start;
  align-items: stretch;
  margin-bottom: 0;
}

.scan-windows figure {
  margin: 0;
  padding: 5px;
  border: 1px solid var(--line);
  background: #141414;
}

.scan-windows figcaption {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 10px;
  text-align: center;
  white-space: nowrap;
  overflow: visible;
}

.scan-windows canvas {
  display: block;
  width: 60px;
  height: var(--preview-h);
  margin: 0 auto;
  border: 1px solid #343434;
  background: #000;
  image-rendering: pixelated;
}

.score-overview canvas {
  display: block;
  width: min(100%, calc(var(--preview-h) * 2));
  height: var(--preview-h);
  margin: 0 auto;
  border: 1px solid #4a5259;
  background: #050607;
  border-color: #4a5259;
  image-rendering: auto;
}

.score-overview {
  min-width: 0;
  grid-column: 4;
}

.score-overview figcaption {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 10px;
  text-align: center;
}

/* s3g-mc browser utility convergence layer */
.topbar,
.panel {
  background: var(--panel);
}

.panel {
  padding: 5px;
  border-left-color: var(--line-soft);
  font-size: 10px;
}

.panel section {
  position: relative;
  margin: 5px;
  padding: 6px;
  border: 0;
  background: #141414;
}

.panel section::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: #c9c9c2;
  opacity: 0.58;
  pointer-events: none;
}

.panel h2 {
  min-height: 23px;
  margin: -6px -6px 6px;
  padding: 0 5px 0 6px;
  border-bottom: 0;
  background: #0f0f0f;
  color: #bdbdb8;
  font-size: 10px;
  font-weight: 400;
}

.panel h2::after,
.collapsible > h2::after {
  width: 15px;
  height: 15px;
  margin-left: 6px;
  border-color: var(--line-soft);
  background: var(--field);
}

.panel label {
  margin: 4px 0;
  color: var(--muted);
  font-size: 10px;
}

button,
.custom-select-button {
  background: #0b0b0b;
}

button {
  text-transform: uppercase;
}

button:hover,
button.active,
.custom-select-button:hover,
.custom-select.open .custom-select-button {
  border-color: #555;
  background: #111;
  color: #d8d8d2;
}

.panel button,
.panel select,
.panel input[type="text"],
.panel input[type="number"],
.panel .custom-select-button,
.panel .custom-select-option {
  min-height: 18px;
  padding-left: 5px;
  padding-right: 5px;
  font-size: 10px;
}

.panel .custom-select-button {
  padding-right: 18px;
}

@media (hover: hover) and (pointer: fine) {
  input[type="range"],
  input[type="range"]:hover,
  input[type="range"]:focus-visible {
    border-color: #4b4b4b;
    background:
      linear-gradient(90deg, #8d8d8d 0 var(--fill, 50%), #232323 var(--fill, 50%) 100%);
  }
}

.aed-sphere-view canvas {
  width: var(--preview-h);
  height: var(--preview-h);
  border-color: #4a5259;
  cursor: grab;
  image-rendering: auto;
}

.aed-sphere-view canvas:active {
  cursor: grabbing;
}

.camera-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3px;
  margin-top: 5px;
}

.camera-buttons button {
  min-height: 20px;
  padding: 0 3px;
  font-size: 10px;
}

.camera-buttons.large {
  grid-template-columns: repeat(3, 1fr);
}

.aed-lightbox {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.72);
}

.aed-lightbox[hidden] {
  display: none;
}

.aed-lightbox-panel {
  width: min(88vw, 780px);
  max-height: calc(100vh - 48px);
  padding: 10px;
  border: 1px solid #5a5a5a;
  background: #101010;
  box-shadow: 0 0 0 1px #000 inset;
}

.aed-lightbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 11px;
}

.aed-lightbox-header button {
  min-width: 28px;
  padding: 0;
}

#aedLargeCanvas {
  display: block;
  width: min(100%, calc(100vh - 150px));
  max-width: 720px;
  height: auto;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  border: 1px solid #4a5259;
  background: #050607;
  cursor: grab;
}

#aedLargeCanvas:active {
  cursor: grabbing;
}

#maskCanvas {
  width: 100%;
  aspect-ratio: 2 / 1;
  border: 1px solid var(--line);
  background: #000;
  image-rendering: pixelated;
}

.swatch-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
  margin-top: 8px;
}

.swatch {
  min-height: 24px;
  padding: 0;
}

.swatch:nth-child(1) { background: hsl(45 70% 45%); }
.swatch:nth-child(2) { background: hsl(135 70% 45%); }
.swatch:nth-child(3) { background: hsl(225 70% 45%); }
.swatch:nth-child(4) { background: hsl(315 70% 45%); }
.swatch:nth-child(5) { background: hsl(0 15% 84%); }
.swatch:nth-child(6) { background: hsl(0 85% 24%); }

.hint {
  line-height: 1.45;
  margin-top: 8px;
}

.aed-readout {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 8px;
  align-items: center;
  margin: 9px 0 6px;
  padding: 7px;
  border: 1px solid var(--line);
  background: #101010;
}

.aed-color-swatch {
  width: 42px;
  height: 42px;
  border: 1px solid #6a6a6a;
  background: #222;
  box-shadow: 0 0 0 1px #000 inset;
}

.aed-color-text {
  display: grid;
  gap: 2px;
  color: var(--text);
  line-height: 1.25;
}

.aed-color-text span:last-child {
  color: #b8d8e8;
}

.mini-label {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.25;
}

@media (max-width: 1080px) {
  .workspace {
    grid-template-columns: minmax(420px, 1fr) 290px;
  }
}

@media (max-width: 780px) {
  body {
    overflow: auto;
  }

  .app {
    height: auto;
    min-height: 100vh;
    display: block;
    overflow: visible;
  }

  .topbar,
  .workspace {
    display: block;
  }

  .top-actions {
    justify-content: flex-start;
    margin-top: 12px;
  }

  .panel {
    border-left: 0;
    border-top: 1px solid var(--line);
    overflow: visible;
  }

  .stage {
    padding: 12px 12px 28px;
    overflow: visible;
  }

  .scan-windows {
    grid-template-columns: 1fr 1fr;
  }

  .score-overview,
  .aed-sphere-view {
    grid-column: 1 / -1;
  }

  .aed-sphere-view canvas {
    margin: 0 auto;
  }
}

/* Compact toolbox controls; keep score previews and drawing areas readable. */
.panel {
  font-size: 10px;
}

.panel section {
  margin: 5px;
  padding: 6px;
}

.panel section + section {
  margin-top: 5px;
}

.panel h2 {
  min-height: 23px;
  margin: -6px -6px 6px;
  padding: 0 5px 0 6px;
  font-size: 10px;
}

.panel label,
.panel .mini-label {
  margin: 4px 0;
  font-size: 10px;
}

.panel label input,
.panel label select {
  margin-top: 2px;
}

.panel button,
.panel select,
.panel input[type="number"],
.panel .custom-select-button,
.panel .custom-select-option {
  min-height: 18px;
  padding-left: 5px;
  padding-right: 5px;
  font-size: 10px;
}

.panel .custom-select,
.panel .custom-select-button,
.panel input[type="range"] {
  margin-top: 2px;
}

.panel .custom-select-button {
  padding-right: 18px;
}

.panel .custom-select-option {
  padding-top: 3px;
  padding-bottom: 3px;
}

.panel input[type="range"] {
  height: 13px;
}

.panel .button-row,
.panel .segmented,
.panel #toolButtons {
  gap: 3px;
}

.panel .button-row {
  margin-top: 6px;
}

@media (hover: hover) and (pointer: fine) {
  .panel input[type="range"]::-webkit-slider-runnable-track,
  .panel input[type="range"]::-webkit-slider-thumb,
  .panel input[type="range"]::-moz-range-track,
  .panel input[type="range"]::-moz-range-thumb {
    height: 11px;
  }
}