:root {
  color-scheme: dark;
  --bg: #0b0d10;
  --panel: #12161b;
  --panel-2: #171d22;
  --line: #2c343d;
  --line-strong: #3a4652;
  --text: #f1f4f2;
  --muted: #98a2a8;
  --cyan: #56d8ff;
  --green: #55d68b;
  --amber: #f0c75e;
  --red: #f36b78;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    var(--bg);
  background-size: 32px 32px;
  color: var(--text);
  font: 14px/1.45 Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, sans-serif;
}

.app-shell {
  max-width: 1500px;
  margin: 0 auto;
  padding: 22px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

h1 {
  margin: 4px 0 0;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: 0;
}

.eyebrow,
.label {
  color: var(--cyan);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

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

.mode-badge,
.build-badge,
.status,
.utility-link {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(18, 22, 27, .85);
  color: var(--muted);
  font-weight: 750;
}

.mode-badge {
  padding: 7px 10px;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.build-badge {
  padding: 6px 9px;
  color: var(--muted);
  font: 10px var(--mono);
  letter-spacing: 0;
}

.mode-badge.wasm { color: var(--green); border-color: rgba(85, 214, 139, .48); }
.mode-badge.native { color: var(--amber); border-color: rgba(240, 199, 94, .48); }
.mode-badge.offline { color: var(--red); border-color: rgba(243, 107, 120, .48); }

.status {
  min-width: 104px;
  padding: 8px 12px;
  text-align: center;
}

.status.running { color: var(--amber); border-color: rgba(240, 199, 94, .48); }
.status.paused { color: var(--cyan); border-color: rgba(86, 216, 255, .48); }
.status.ok { color: var(--green); border-color: rgba(85, 214, 139, .48); }
.status.error { color: var(--red); border-color: rgba(243, 107, 120, .48); }

.utility-link {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 11px;
  color: var(--cyan);
  text-decoration: none;
  font-size: 12px;
}

.utility-link:hover,
button:hover:not(:disabled) {
  border-color: var(--cyan);
}

.wasm-error {
  border: 1px solid rgba(240, 199, 94, .45);
  background: rgba(240, 199, 94, .08);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 16px;
}

.wasm-error[hidden] { display: none; }
.wasm-error p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 16px;
  align-items: start;
}

.viewport-panel,
.control-panel,
.log-panel {
  border: 1px solid var(--line);
  background: rgba(18, 22, 27, .93);
  border-radius: 8px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, .22);
}

.viewport-panel {
  min-width: 0;
  padding: 16px;
}

.viewport-toolbar {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.toolbar-buttons {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.canvas-wrap {
  min-width: 0;
  margin-top: 14px;
  display: grid;
  place-items: center;
  min-height: 520px;
  border: 1px solid #20272f;
  border-radius: 6px;
  background: #020304;
  overflow: auto;
}

canvas {
  image-rendering: pixelated;
  width: min(100%, 640px);
  min-width: 0;
  max-width: 100%;
  height: auto;
  background: #000;
}

.viewport-panel:fullscreen {
  --projector-matte: clamp(18px, 4vmin, 56px);
  width: 100vw;
  height: 100vh;
  padding: var(--projector-matte);
  border: 0;
  border-radius: 0;
  background: #000;
  display: grid;
  grid-template-rows: minmax(0, 1fr);
}

.viewport-panel:fullscreen .viewport-toolbar,
.viewport-panel:fullscreen .perf-bar {
  display: none;
}

.viewport-panel:fullscreen .canvas-wrap {
  margin: 0;
  min-height: 0;
  height: 100%;
  border: 0;
  background: #000;
  overflow: hidden;
}

.viewport-panel:fullscreen canvas {
  aspect-ratio: 4 / 3;
  width: auto;
  height: min(100%, 75vw);
  max-width: 100%;
  max-height: 100%;
  object-fit: fill;
}

.perf-bar {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  font: 11px var(--mono);
  flex-wrap: wrap;
}

.control-panel {
  padding: 14px;
  display: grid;
  gap: 14px;
}

.panel-block,
.advanced-content {
  display: grid;
  gap: 9px;
}

.grid-two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-items: end;
}

label {
  min-width: 0;
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
}

select,
input[type="number"] {
  width: 100%;
  min-width: 0;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0b0f13;
  color: var(--text);
  padding: 8px 10px;
  font: inherit;
}

select:focus,
input[type="number"]:focus,
button:focus-visible,
.utility-link:focus-visible,
summary:focus-visible {
  outline: 2px solid rgba(86, 216, 255, .65);
  outline-offset: 2px;
}

input[type="file"] {
  max-width: 100%;
  color: var(--muted);
  font-size: 12px;
}

.upload-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.upload-label {
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}

.sound-toggle {
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 800;
}

.sound-toggle input {
  width: 16px;
  height: 16px;
  accent-color: var(--cyan);
}

button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  background: #151b22;
  padding: 8px 13px;
  cursor: pointer;
  font-weight: 800;
  font-size: 13px;
  white-space: nowrap;
}

button.primary {
  background: #09445b;
  border-color: #1581a3;
  color: #e6fbff;
}

button.is-active {
  color: var(--green);
  border-color: rgba(85, 214, 139, .52);
}

button:disabled {
  opacity: .45;
  cursor: default;
}

.advanced-panel {
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 800;
}

.advanced-content {
  margin-top: 12px;
}

.audio-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.volume-control {
  display: grid;
  grid-template-columns: auto minmax(120px, 1fr) 48px;
  align-items: center;
  gap: 10px;
}

.volume-control input[type="range"] {
  width: 100%;
  min-width: 0;
  accent-color: var(--cyan);
}

.volume-control output {
  color: var(--muted);
  font-size: 12px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.audio-actions button {
  padding: 7px 9px;
  font-size: 11px;
}

#soundState {
  font-size: 11px;
}

.register-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.reg,
.kv div {
  min-width: 0;
  border: 1px solid #242c34;
  background: #0b0f13;
  border-radius: 5px;
  padding: 7px;
}

.reg span,
.kv span {
  display: block;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.reg strong,
.kv strong {
  display: block;
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  font: 12px var(--mono);
}

.kv {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.log-panel {
  margin-top: 16px;
  padding: 12px 14px;
}

pre {
  margin: 10px 0 0;
  max-height: 220px;
  overflow: auto;
  color: #c8d0d3;
  white-space: pre-wrap;
  font: 12px/1.45 var(--mono);
}

.content-shell {
  max-width: 1120px;
}

.about-layout {
  display: grid;
  gap: 16px;
}

.about-section {
  border: 1px solid var(--line);
  background: rgba(18, 22, 27, .93);
  border-radius: 8px;
  padding: 18px;
}

.about-section h2,
.about-section h3,
.about-section p {
  margin: 0;
}

.about-section h2 {
  margin-top: 8px;
  max-width: 820px;
  font-size: 24px;
  line-height: 1.15;
  letter-spacing: 0;
}

.about-section h3 {
  font-size: 15px;
  line-height: 1.2;
  letter-spacing: 0;
}

.about-section p {
  margin-top: 10px;
  max-width: 860px;
  color: #c9d1d4;
}

.intro-section {
  border-color: rgba(86, 216, 255, .34);
}

.about-grid,
.contributor-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

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

.contributor-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.about-grid article,
.contributor-list article {
  min-width: 0;
  border: 1px solid #242c34;
  background: #0b0f13;
  border-radius: 6px;
  padding: 13px;
}

.about-grid article p,
.contributor-list article p {
  font-size: 13px;
}

.compact-section p {
  max-width: 760px;
}

@media (max-width: 980px) {
  .app-shell { padding: 14px; }
  .workspace { grid-template-columns: 1fr; }
  .canvas-wrap { min-height: 360px; }
  .control-panel { grid-template-columns: 1fr 1fr; }
  .advanced-panel { grid-column: 1 / -1; }
  .about-grid,
  .contributor-list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  h1 { font-size: 24px; }
  .topbar {
    align-items: stretch;
    flex-direction: column;
  }
  .topbar-right { justify-content: flex-start; }
  .workspace,
  .viewport-panel,
  .control-panel,
  .log-panel {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }
  .viewport-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .toolbar-buttons {
    justify-content: flex-start;
    max-width: 100%;
  }
  .canvas-wrap { overflow: hidden; }
  canvas { width: 100%; }
  .control-panel,
  .grid-two,
  .register-grid,
  .kv {
    grid-template-columns: 1fr;
  }
  .audio-actions {
    grid-template-columns: 1fr;
  }

  .about-grid,
  .contributor-list {
    grid-template-columns: 1fr;
  }

  .volume-control {
    grid-template-columns: 1fr;
  }

  .volume-control output {
    text-align: left;
  }
}