:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #05090c;
  color: #e5f3f9;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; }

body {
  min-height: 100vh;
  background: #05090c;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: 52px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 8px 12px;
  border-bottom: 1px solid #173748;
  background: rgba(8, 17, 25, .96);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

h1 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
}

#status {
  color: #658fa9;
  font-size: 11px;
  white-space: nowrap;
}

#selection-summary {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #90b7d1;
  font-size: 12px;
  text-align: center;
}

.actions {
  display: flex;
  gap: 6px;
}

button {
  border: 1px solid #436983;
  border-radius: 5px;
  padding: 6px 9px;
  background: #0f222e;
  color: #e5f3f9;
  font: inherit;
  font-size: 11px;
  cursor: pointer;
}

button:hover:not(:disabled) { border-color: #d88351; }
button:disabled { opacity: .35; cursor: default; }

#workspace {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  padding: 12px;
  overflow: hidden;
}

.svg-document {
  position: relative;
  width: 100%;
  min-width: 0;
  height: var(--websvg-stage-height, calc(100vh - 76px));
  border: 1px solid #173748;
  border-radius: 7px;
  background: #05090c;
  overflow: hidden;
}

.svg-document[hidden] { display: none; }

.svg-host {
  width: 100%;
  height: 100%;
  min-width: 0;
  overflow: hidden;
}

.svg-controls {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 20;
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid #274e63;
  border-radius: 6px;
  background: rgba(8, 17, 25, .88);
  backdrop-filter: blur(8px);
}

.svg-controls button {
  min-width: 30px;
  padding: 5px 7px;
  font-size: 10px;
}

.websvg-document-svg.is-panning {
  cursor: grabbing !important;
}

.websvg-document-svg {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
}

.websvg-interactive { cursor: pointer; }

.svg-host [data-websvg-highlight="primary"] {
  filter:
    drop-shadow(0 0 2px rgba(255,255,255,1))
    drop-shadow(0 0 8px rgba(0,229,255,1))
    drop-shadow(0 0 16px rgba(0,229,255,.95));
}

.svg-host [data-websvg-highlight="relation"] {
  filter:
    drop-shadow(0 0 3px rgba(255,179,71,1))
    drop-shadow(0 0 10px rgba(255,111,0,.95));
}

.svg-host [data-websvg-highlight="related"] {
  filter:
    drop-shadow(0 0 3px rgba(67,183,255,.95))
    drop-shadow(0 0 8px rgba(67,183,255,.75));
}

.svg-host [data-websvg-highlight="primary"] rect,
.svg-host [data-websvg-highlight="primary"] path,
.svg-host [data-websvg-highlight="primary"] line,
.svg-host [data-websvg-highlight="primary"] polygon {
  stroke: #00e5ff !important;
  stroke-width: 3.2px !important;
}

.svg-host [data-websvg-highlight="relation"] rect,
.svg-host [data-websvg-highlight="relation"] path,
.svg-host [data-websvg-highlight="relation"] line,
.svg-host [data-websvg-highlight="relation"] polygon {
  stroke: #ff8a00 !important;
  stroke-width: 2.6px !important;
}

.svg-host [data-websvg-highlight="related"] rect,
.svg-host [data-websvg-highlight="related"] path,
.svg-host [data-websvg-highlight="related"] line,
.svg-host [data-websvg-highlight="related"] polygon {
  stroke: #43b7ff !important;
  stroke-width: 2px !important;
}

.error {
  margin: 0;
  padding: 20px;
  color: #ffb4ab;
  white-space: pre-wrap;
}

@media (max-width: 760px) {
  .topbar {
    grid-template-columns: 1fr auto;
    gap: 6px 10px;
  }

  #selection-summary {
    grid-column: 1 / -1;
    grid-row: 2;
    text-align: left;
  }

  .actions {
    grid-column: 2;
    grid-row: 1;
  }

  #workspace { padding: 6px; gap: 6px; }
}


/* Matrix projection gutter */
.matrix-label-view {
  --matrix-gutter: 118px;
  isolation: isolate;
}

.matrix-label-view .svg-host {
  position: absolute;
  left: var(--matrix-gutter);
  top: 0;
  width: calc(100% - var(--matrix-gutter));
  height: 100%;
}

.matrix-label-source .u {
  opacity: 0;
  pointer-events: none;
}

.matrix-label-layer {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--matrix-gutter);
  z-index: 15;
  pointer-events: none;
  overflow: hidden;
  background: #05090c;
  border-right: 1px solid #274e63;
}

.matrix-label-universal-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.matrix-pinned-label {
  position: absolute;
  left: 4px;
  max-width: calc(var(--matrix-gutter) - 8px);
  margin: 0;
  border: 0;
  border-radius: 4px;
  padding: 2px 5px;
  background: rgba(5, 9, 12, .96);
  color: #e5f3f9;
  line-height: 1.05;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  pointer-events: auto;
  transform: translateY(-50%);
  font-weight: 700;
}

.matrix-pinned-label:hover {
  color: #ffffff;
  background: #0f222e;
}

.matrix-pinned-label[data-websvg-highlight="primary"] {
  color: #05090c;
  background: #dffcff;
  text-shadow: none;
}

.matrix-pinned-label[data-websvg-highlight="related"] {
  color: #8fd8ff;
}

.matrix-pinned-label[data-websvg-highlight="relation"] {
  color: #ffb347;
}

/* Bright matrix selection */
.svg-host .matrix-cell[data-websvg-highlight="primary"] .cell-active,
.svg-host .matrix-cell[data-websvg-group-highlight="primary"] .cell-active {
  fill: #dffcff !important;
  fill-opacity: 1 !important;
  stroke: #00e5ff !important;
  stroke-width: 1.8px !important;
}

.svg-host .matrix-cell[data-websvg-highlight="primary"] .cell,
.svg-host .matrix-cell[data-websvg-group-highlight="primary"] .cell {
  fill: #05090c !important;
}