:root {
  color-scheme: dark;
  --ink: #ededed;
  --muted: #999;
  --panel: #151515;
  --line: #383838;
  --accent: #ff4fae;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: #0e0e0e; color: var(--ink); font-size: 13px; }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled, input:disabled, select:disabled { cursor: not-allowed; opacity: .6; }
button[aria-busy="true"] { cursor: wait; }
button[aria-busy="true"]::after {
  display: inline-block; width: 8px; height: 8px; border: 1px solid currentColor;
  border-right-color: transparent; border-radius: 50%; content: ""; animation: loading-spin .7s linear infinite;
}
@keyframes loading-spin { to { transform: rotate(360deg); } }
.brand-actions { display: flex; align-items: center; gap: 10px; }
.brand-actions button { padding-inline: 12px; }
.github-link {
  display: grid; width: 30px; height: 30px; place-items: center; color: var(--ink);
}
.github-link:hover { color: var(--accent); }
.github-link svg { width: 20px; height: 20px; fill: currentColor; }

.topbar {
  min-height: 56px; display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 6px 11px; border-bottom: 1px solid var(--line); background: #101010;
}
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(1.15rem, 2vw, 1.4rem); letter-spacing: -.05em; }
h2 { margin-bottom: 8px; font-size: .9rem; font-weight: 600; }
.search { display: flex; width: min(680px, 66vw); }
.search input { flex: 1; min-width: 120px; border: 1px solid var(--line); border-right: 0; border-radius: 2px 0 0 2px; padding: 7px 9px; background: #202020; color: var(--ink); }
.search button, button { border: 1px solid var(--line); border-radius: 2px; padding: 6px 9px; background: #272727; color: var(--ink); }
.search button { display: inline-flex; align-items: center; gap: 6px; border-radius: 0; white-space: nowrap; }
.search button:first-of-type { border-radius: 0 2px 2px 0; }
.search button:last-child { margin-left: 4px; border-radius: 2px; }
button:hover { border-color: var(--accent); }
/* Focus is drawn inside the element so the indicator can never overlap a neighbour. */
:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
input[type="checkbox"]:focus-visible, input[type="range"]:focus-visible { outline-offset: 2px; }
/* A text field matches :focus-visible even when clicked, so it tints its own edge instead. */
.search input:focus, .export-name input:focus { outline: none; border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }

.workspace { display: grid; grid-template-columns: minmax(0, 1fr) 305px; height: calc(100% - 56px); }
.map-panel { position: relative; min-height: 420px; }
#map { position: absolute; inset: 0; }
.map-tools { position: absolute; z-index: 2; left: 9px; top: 9px; display: flex; flex-wrap: wrap; gap: 5px; }
.map-tools button { display: inline-flex; align-items: center; gap: 7px; background: #171717ee; }
.map-tools .icon-button {
  display: grid; width: 32px; height: 32px; place-items: center; padding: 0 0 2px;
  font-size: 1.4rem; line-height: 1;
}
.map-tools button.active, .map-tools button[aria-pressed="true"] { color: #111; background: var(--accent); border-color: var(--accent); }
.map-tools button.active .tool-symbol { border-color: #111; }
.map-tools button.active .symbol-source { background: #111; }
.maplibregl-ctrl-bottom-left .maplibregl-ctrl-group { display: flex; }
.maplibregl-ctrl-bottom-left .maplibregl-ctrl-group button + button { border-top: 0; border-left: 1px solid #ddd; }
.image-editor { position: absolute; z-index: 3; left: 50%; bottom: 10px; display: flex; align-items: flex-end; transform: translateX(-50%); }
.image-editor[hidden], .image-editor-panel[hidden] { display: none; }
.image-editor-buttons { display: flex; overflow: hidden; border: 1px solid var(--line); border-radius: 3px; background: #171717ee; }
.image-editor-buttons button {
  display: grid; width: 30px; height: 30px; place-items: center; border: 0; border-right: 1px solid var(--line); border-radius: 0; padding: 0; background: transparent;
}
.image-editor-buttons button:last-child { border-right: 0; }
.image-editor-buttons button:hover, .image-editor-buttons button[aria-pressed="true"] { color: var(--accent); }
.image-editor-panel { position: absolute; bottom: 38px; left: 50%; width: min(290px, calc(100vw - 24px)); padding: 11px; border: 1px solid var(--line); border-radius: 3px; background: #171717f5; box-shadow: 0 3px 12px #0008; transform: translateX(-50%); }
.image-editor-panel > label, .image-distance-control { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--muted); }
.image-editor-panel output { color: var(--ink); font: .72rem/1.3 ui-monospace, monospace; }
.image-editor-panel .image-scale-measurement { display: block; min-height: 1.3em; margin-top: 6px; color: var(--ink); }
.image-editor-panel .image-scale-measurement[hidden] { visibility: hidden; }
.image-editor-panel input[type="range"] { width: 100%; margin: 10px 0 2px; accent-color: var(--accent); }
.image-editor-panel p { margin: 3px 0 10px; color: var(--muted); line-height: 1.4; }
.image-distance-control input { width: 82px; border: 1px solid var(--line); border-radius: 2px; padding: 5px 7px; background: #222; color: var(--ink); }
.image-editor-panel .primary { margin-top: 10px; }
.side-panel { overflow-y: auto; border-left: 1px solid var(--line); background: var(--panel); }
.side-panel section { padding: 11px; }
.side-panel section + section { padding-top: 8px; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 7px; }
.section-heading h2 { flex: 1; min-width: 0; margin-bottom: 0; white-space: nowrap; }
.text-button { flex: 0 0 auto; padding: 4px; border: 0; color: var(--accent); background: none; }
.compact-select select, .reflection-material {
  max-width: 104px; border: 0; border-radius: 0; padding: 2px 14px 2px 3px;
  color: var(--muted); background: #1d1d1d; font: .68rem/1.3 ui-monospace, monospace;
}
.link-points { color: var(--accent); }
.link-points[aria-pressed="true"] { border-color: var(--accent); color: #111; background: var(--accent); }
.link-points[aria-pressed="true"] .symbol-source { border-color: #111; background: #111; }
.link-points[aria-pressed="true"] .symbol-listener { border-color: #111; }
.level-control { display: grid; gap: 5px; color: var(--muted); font-size: .7rem; }
.level-control > span { display: flex; justify-content: space-between; gap: 10px; }
.level-control output { color: var(--ink); font: 600 .7rem/1.2 ui-monospace, monospace; }
.level-control input { width: 100%; margin: 0; accent-color: var(--accent); }
.global-level { margin: 0 0 8px; padding: 4px 0; }
.reflection-list { display: grid; }
.reflection { padding: 7px 0; }
.reflection header { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.reflection h3 { flex: 1; margin: 0; font-size: .84rem; }
.reflection button { padding: 2px 7px; border: 0; color: var(--accent); background: transparent; }
.metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; margin-top: 8px; }
.metric span { display: block; color: var(--muted); font-size: .68rem; }
.metric strong { font: 600 .82rem/1.6 ui-monospace, monospace; }
.reflection .level-control { margin-top: 8px; }
.empty-state, .sound-name { color: var(--muted); font-size: .76rem; line-height: 1.5; }
.file-picker { display: flex; justify-content: center; padding: 7px; border: 1px solid #4a4a4a; border-radius: 2px; color: var(--muted); cursor: pointer; }
.file-picker:hover { border-color: var(--accent); color: var(--ink); }
.file-picker input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.sound-name { margin: 10px 0; }
.solo-control { display: flex; align-items: center; gap: 7px; margin: 0 0 9px; color: var(--ink); font-size: .76rem; cursor: pointer; }
.solo-control input { width: 14px; height: 14px; margin: 0; accent-color: var(--accent); }
.panning-control { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 0 0 9px; font-size: .76rem; }
.panning-control select { min-width: 142px; border: 1px solid var(--line); border-radius: 2px; padding: 4px 6px; background: #222; color: var(--ink); }
.heading-control { margin: 0 0 10px; padding: 5px 0; }
.heading-readout { display: inline-flex; align-items: center; gap: 6px; color: var(--ink); }
.heading-readout output { width: 4ch; text-align: right; }
.heading-arrow { display: inline-grid; place-items: center; width: 15px; height: 15px; color: var(--accent); font: 800 13px/1 ui-monospace, monospace; transform-origin: center; }
.audio-actions { display: grid; grid-template-columns: 1.15fr 1fr .9fr; gap: 6px; }
.primary { color: #111; background: var(--accent); border-color: var(--accent); font-weight: 700; }
.primary:not(:disabled):hover { background: #ff73bf; border-color: #ff73bf; }
.audio-actions button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; }
.modal {
  width: min(330px, calc(100vw - 24px)); padding: 0; border: 1px solid var(--line);
  border-radius: 2px; background: #181818; color: var(--ink);
}
.modal::backdrop { background: #000a; }
.modal:focus { outline: none; }
.modal form { padding: 14px; }
.modal h2 { margin-bottom: 7px; }
.modal p { margin-bottom: 14px; color: var(--muted); font-size: .76rem; line-height: 1.5; }
.modal-actions { display: flex; justify-content: flex-end; gap: 7px; }
.settings-modal { width: min(540px, calc(100vw - 24px)); max-height: calc(100dvh - 24px); overflow: auto; }
.settings-grid { display: grid; gap: 11px; margin: 14px 0 16px; }
.settings-grid label { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); font-size: .76rem; }
.settings-control { display: grid; grid-template-columns: minmax(150px, 1fr) 72px; align-items: center; gap: 9px; width: min(320px, 65vw); }
.settings-grid input { width: 100%; margin: 0; accent-color: var(--accent); }
.settings-grid output { color: var(--ink); font: .72rem/1.3 ui-monospace, monospace; text-align: right; }
.settings-grid select { min-width: 170px; }
.settings-grid [hidden] { display: none; }
.export-modal { width: min(460px, calc(100vw - 24px)); }
.export-name { display: grid; gap: 5px; margin: 14px 0 10px; color: var(--muted); font-size: .72rem; }
.export-name input { width: 100%; border: 1px solid var(--line); border-radius: 2px; padding: 7px 8px; background: #222; color: var(--ink); }
.export-list { display: grid; border-top: 1px solid var(--line); }
.export-list label { display: flex; align-items: center; gap: 9px; padding: 8px 2px; border-bottom: 1px solid var(--line); cursor: pointer; }
.export-list input { accent-color: var(--accent); }
.export-list span { display: flex; flex: 1; justify-content: space-between; gap: 12px; }
.export-list strong { font-size: .76rem; }
.export-list small { color: var(--muted); font: .7rem/1.4 ui-monospace, monospace; }
.export-modal .export-contract { margin: 10px 0 4px; }
.export-modal .export-field-note { margin-bottom: 4px; color: #c8a4b6; }
.export-modal .export-summary { margin-bottom: 12px; color: var(--ink); font-family: ui-monospace, monospace; }
.export-modal .export-error { color: #ff8abf; }
.tool-symbol { display: inline-block; flex: 0 0 auto; width: 10px; height: 10px; border: 2px solid #eee; }
.symbol-source { border-color: var(--accent); border-radius: 50%; background: var(--accent); }
.symbol-listener { border-radius: 50%; background: transparent; }
.symbol-reflector { border-color: #111; border-radius: 50%; background: #eee; }
.marker { width: 22px; height: 22px; border: 3px solid #111; border-radius: 50%; }
.marker-source { background: var(--accent); }
.marker-listener { border-color: #eee; background: #111; }
.marker-combined { border-color: var(--accent); background: #111; box-shadow: inset 0 0 0 4px #eee; }
.marker-reflector {
  display: grid; place-items: center; border: 3px solid #111; border-radius: 50%;
  background: #eee; color: #111; font: 800 10px/1 ui-monospace, monospace;
}
.echo-field-handle {
  width: 16px; height: 16px; border: 3px solid #111; border-radius: 50%;
  background: var(--accent); cursor: ew-resize;
}
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (max-width: 780px) {
  .topbar { align-items: stretch; flex-direction: column; gap: 12px; }
  .search { width: 100%; }
  .workspace { grid-template-columns: 1fr; height: auto; }
  .map-panel { height: 62vh; }
  .side-panel { overflow: visible; border-left: 0; }
}

@media (max-width: 480px) {
  .settings-modal {
    inset: 0; width: 100vw; max-width: none; height: 100dvh; max-height: none; margin: 0;
    border: 0; border-radius: 0;
  }
  .settings-modal form, .settings-grid, .settings-grid label { width: 100%; min-width: 0; }
  .settings-grid label { display: grid; justify-content: normal; gap: 5px; }
  .settings-control { grid-template-columns: minmax(0, 1fr) 72px; width: 100%; min-width: 0; }
  .settings-grid select { justify-self: start; }
  .map-tools .icon-button { padding: 0 0 0px; font-size: inherit; line-height: 1; }
}