/* Interface chrome only. Everything inside the map SVG carries its own
   presentation attributes so that exported files need no stylesheet. */

:root {
  --bg: #14161a;
  --panel: #1b1e24;
  --panel-2: #23272f;
  --line: #32373f;
  --ink: #e7eaee;
  --ink-dim: #9aa3ae;
  --accent: #6aa9cf;
  --accent-ink: #0d1116;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #eceef1;
    --panel: #f7f8fa;
    --panel-2: #ffffff;
    --line: #d3d8de;
    --ink: #1d2126;
    --ink-dim: #5f6874;
    --accent: #2b6f9e;
    --accent-ink: #ffffff;
    color-scheme: light;
  }
}

* {
  box-sizing: border-box;
}

/* Layout rules below set display on the same elements the panel hides, so the
   hidden state needs to win. */
[hidden] {
  display: none !important;
}

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

body {
  background: var(--bg);
  color: var(--ink);
  font: 13px/1.45 "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: grid;
  grid-template-columns: 332px 1fr;
  height: 100%;
}

/* --- panel ---------------------------------------------------------------- */

.panel {
  overflow-y: auto;
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 0 14px 24px;
}

.panel-head {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--panel);
  padding: 14px 0 10px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 10px;
}

.panel-head h1 {
  margin: 0;
  font-size: 17px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.panel-head {
  position: relative;
}

.panel-head p {
  margin: 2px 0 0;
  color: var(--ink-dim);
  font-size: 11.5px;
}

/* Language picker, top left, matching the GitHub chip on the right. */
.lang {
  position: absolute;
  top: 14px;
  left: 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 4px 2px 7px;
  border: 1px solid var(--line);
  border-radius: 20px;
  color: var(--ink-dim);
  cursor: pointer;
}

.lang:hover,
.lang:focus-within {
  color: var(--ink);
  border-color: var(--accent);
}

.lang select {
  width: auto;
  border: none;
  background: none;
  padding: 0 2px;
  font-size: 11px;
  color: inherit;
  cursor: pointer;
}

.panel-head h1 {
  margin-top: 26px;
}

.repo-link {
  position: absolute;
  top: 14px;
  right: 0;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 20px;
  color: var(--ink-dim);
  font-size: 11px;
  text-decoration: none;
}

.repo-link:hover {
  color: var(--ink);
  border-color: var(--accent);
}

/* One gutter for the whole panel section, so that direct children and anything
   nested in a .grid2 or .box line up on the same edges. */
details {
  --gutter: 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  margin-bottom: 10px;
  background: var(--panel-2);
  padding: 0 var(--gutter);
}

details[open] {
  padding-bottom: var(--gutter);
}

details > summary {
  cursor: pointer;
  margin: 0 calc(var(--gutter) * -1);
  padding: 8px var(--gutter);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-dim);
  list-style: none;
}

details > summary::-webkit-details-marker {
  display: none;
}

details > summary::before {
  content: "▸";
  display: inline-block;
  width: 12px;
  color: var(--accent);
}

details[open] > summary::before {
  content: "▾";
}

details.sub {
  margin: 8px 0 0;
  padding: 0;
  background: transparent;
}

details.sub > summary {
  margin: 0;
  padding: 6px 0;
}

details.sub[open] {
  padding-bottom: 0;
}

.field {
  margin: 8px 0;
}

.field > label,
.check {
  display: block;
  font-size: 11.5px;
  color: var(--ink-dim);
  margin-bottom: 3px;
}

.check {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 5px 0;
  color: var(--ink);
  cursor: pointer;
}

/* Browsers give checkboxes their own margin, which would push every checkbox
   row off the edge that the selects and number fields sit on. */
.check input[type="checkbox"] {
  margin: 0;
  flex: none;
}

.checks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 8px;
}

.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 8px;
}

.box {
  border: 1px dashed var(--line);
  border-radius: 5px;
  padding: 2px 9px 9px;
  margin: 9px 0;
}

.hint {
  color: var(--accent);
  font-size: 10.5px;
  text-transform: none;
  letter-spacing: 0;
}

input[type="text"],
input[type="number"],
select,
output.output {
  width: 100%;
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 4px 6px;
  font: inherit;
  font-size: 12px;
}

output.output {
  display: block;
  color: var(--ink-dim);
}

select:disabled,
input:disabled {
  opacity: 0.45;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  margin: 0;
}

.pair {
  display: grid;
  grid-template-columns: 1fr 74px;
  gap: 6px;
  align-items: center;
}

/* Populations run to eight digits and were being cut off at 62px. */
.pair.wide {
  grid-template-columns: 1fr 92px;
}

.buttons {
  display: flex;
  gap: 6px;
  margin: 8px 0;
}

button {
  flex: 1;
  padding: 7px 10px;
  border-radius: 5px;
  border: 1px solid transparent;
  background: var(--accent);
  color: var(--accent-ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button.ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
  font-weight: 400;
}

button:hover {
  filter: brightness(1.08);
}

.note,
.panel-foot p {
  color: var(--ink-dim);
  font-size: 11px;
  margin: 6px 0 0;
}

.panel-foot a {
  color: var(--accent);
}

.colours {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px 10px;
  margin-top: 6px;
}

.colours label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  color: var(--ink-dim);
  cursor: pointer;
  min-width: 0;
}

.colours label span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.colours label:hover {
  color: var(--ink);
}

/* A plain rectangle filled with the colour it holds, rather than the browser's
   default well with its own padding and border. */
.colours input[type="color"] {
  appearance: none;
  -webkit-appearance: none;
  width: 26px;
  height: 15px;
  flex: none;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: none;
  cursor: pointer;
}

.colours input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

.colours input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 1px;
}

.colours input[type="color"]::-moz-color-swatch {
  border: none;
  border-radius: 1px;
}

/* --- stage ---------------------------------------------------------------- */

.stage {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.stage-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  font-size: 11.5px;
  color: var(--ink-dim);
}

.spacer {
  flex: 1;
}

.status.busy {
  color: var(--accent);
}

.status.error {
  color: #e07a5f;
}

.readout {
  font-variant-numeric: tabular-nums;
}

.stage-area {
  flex: 1;
  min-height: 0;
  padding: 18px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    linear-gradient(45deg, rgba(127, 127, 127, 0.09) 25%, transparent 25% 75%, rgba(127, 127, 127, 0.09) 75%) 0 0 /
      18px 18px,
    linear-gradient(45deg, rgba(127, 127, 127, 0.09) 25%, transparent 25% 75%, rgba(127, 127, 127, 0.09) 75%) 9px 9px /
      18px 18px;
}

.stage-area svg {
  max-width: 100%;
  max-height: 100%;
  height: auto;
  width: auto;
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.38);
  touch-action: none;
  cursor: grab;
}

.stage-area.dragging svg {
  cursor: grabbing;
}

/* Section drag handles. They live inside the map SVG but are interface only:
   export removes them and printing hides them. */
[data-handle] {
  cursor: move;
}

[data-handle="n"],
[data-handle="s"] {
  cursor: ns-resize;
}

[data-handle="e"],
[data-handle="w"] {
  cursor: ew-resize;
}

[data-handle="nw"],
[data-handle="se"] {
  cursor: nwse-resize;
}

[data-handle="ne"],
[data-handle="sw"] {
  cursor: nesw-resize;
}

@media print {
  .panel,
  .stage-bar,
  .toast,
  [data-ui] {
    display: none;
  }

  .app {
    display: block;
  }

  .stage-area {
    padding: 0;
    background: none;
    overflow: visible;
  }

  .stage-area svg {
    box-shadow: none;
    max-width: none;
    max-height: none;
  }
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 20px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  font-size: 12px;
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 45vh) 1fr;
  }

  .panel {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
}