:root {
  color-scheme: dark;
  --bg: #121215;
  --panel: #19191d;
  --raised: #202026;
  --line: #2c2c34;
  --line-strong: #3a3a44;
  --text: #d6d6de;
  --muted: #8a8a96;
  --faint: #5c5c66;
  --accent: #7fd4a8;
  --accent-bg: #1d3329;
  --live: #e8b04a;
  --danger: #f07a6a;
  --danger-bg: #3a1f1c;
  --warn: #e8c46a;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 13px/1.4 var(--sans);
  display: grid;
  grid-template-rows: auto 1fr;
}
button, select, input { font: inherit; color: inherit; }
button {
  background: var(--raised);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 3px 9px;
  cursor: pointer;
}
button:hover { border-color: var(--muted); }
button.ghost { background: none; border-color: transparent; color: var(--muted); padding: 2px 6px; }
button.ghost:hover { color: var(--text); border-color: var(--line-strong); }
a.ghost { color: var(--muted); text-decoration: none; padding: 3px 7px; border: 1px solid transparent; border-radius: 6px; }
a.ghost:hover { color: var(--text); border-color: var(--line-strong); }
button.on { background: var(--accent-bg); border-color: var(--accent); color: var(--accent); }
select, input[type=number], input[type=text] {
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 2px 6px;
  min-width: 0;
}
input[type=number] { width: 72px; font-family: var(--mono); font-size: 12px; }
input[type=range] { accent-color: var(--accent); width: 100%; margin: 0; }

/* Header */

header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
header h1 { font-size: 15px; font-weight: 600; margin: 0; letter-spacing: .02em; }
header .version { font-family: var(--mono); font-size: 12px; color: var(--muted); }
header .spacer { flex: 1; }
header label { color: var(--muted); display: flex; align-items: center; gap: 6px; }

/* Columns */

main {
  display: grid;
  grid-template-columns: minmax(280px, 330px) minmax(380px, 1fr) minmax(320px, 440px);
  min-height: 0;
}
main > section { min-height: 0; overflow: auto; }
#setup { border-right: 1px solid var(--line); padding: 10px 12px 40px; }
#middle { display: flex; flex-direction: column; min-width: 0; }
#code { border-left: 1px solid var(--line); display: flex; flex-direction: column; overflow: hidden; }

@media (max-width: 1100px) {
  body { display: block; }
  main { grid-template-columns: 1fr; }
  main > section { overflow: visible; }
  #setup, #code { border: 0; border-top: 1px solid var(--line); }
  #middle { order: -1; }
  #frame { height: 60vw; }
  #code pre { max-height: 70vh; }
}

/* Setup tree */

.error {
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: 6px;
  padding: 6px 8px;
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  white-space: pre-wrap;
}
.section { margin: 0 0 14px; }
.section-head {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 4px;
  position: relative;
}
.section-head h2 { font-size: 12px; font-weight: 600; margin: 0; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.section-head .count { color: var(--faint); font-size: 12px; }
.section-head .add { margin-left: auto; color: var(--accent); }
.section-hint { color: var(--faint); font-size: 12px; margin: 2px 0 6px; }
.stage { color: var(--faint); font-size: 11px; margin: 6px 0 2px 2px; }

.item {
  border: 1px solid var(--line);
  border-radius: 7px;
  margin: 0 0 3px;
  background: var(--panel);
}
.item.selected { border-color: var(--accent); }
.item.bad { border-color: var(--danger); }
.item.warned { border-color: var(--warn); }
.item-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 4px 3px 8px;
  cursor: pointer;
  min-height: 28px;
}
.item-head .name { font-family: var(--mono); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-head .meta { color: var(--muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-head .grip { color: var(--faint); cursor: grab; font-size: 11px; }
.item-head .right { margin-left: auto; display: flex; align-items: center; gap: 2px; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--live); flex: none; }
.item-body { padding: 4px 8px 8px; border-top: 1px solid var(--line); }
.item-body .doc { color: var(--muted); font-size: 12px; margin: 2px 0 6px; }
.item-body .note { color: var(--warn); font-size: 12px; margin: 4px 0 0; }
.item.dragging { opacity: .4; }
.item.drop-before { box-shadow: 0 -2px 0 var(--accent); }

.field {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) auto 22px;
  align-items: center;
  gap: 6px;
  margin: 3px 0;
}
.field > label { color: var(--muted); font-family: var(--mono); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.field > label.changed { color: var(--text); }
.field .reset { visibility: hidden; padding: 0 4px; }
.field .reset.shown { visibility: visible; }
.slider { position: relative; padding-bottom: 4px; }
.slider .live {
  position: absolute; left: 0; bottom: 0; height: 2px; background: var(--live);
  border-radius: 1px; width: 0; transition: width .05s linear;
}
.row { display: flex; align-items: center; gap: 6px; margin: 3px 0; flex-wrap: wrap; }
.row > label { color: var(--muted); width: 92px; font-family: var(--mono); font-size: 12px; }
.row select, .row input[type=text] { flex: 1; }
.checks { display: flex; flex-wrap: wrap; gap: 4px 10px; margin: 4px 0; }
.checks label { display: flex; align-items: center; gap: 4px; font-family: var(--mono); font-size: 12px; }
.meter { flex: 1; height: 4px; background: var(--line); border-radius: 2px; position: relative; min-width: 40px; }
.meter i { position: absolute; left: 0; top: 0; bottom: 0; background: var(--live); border-radius: 2px; width: 0; }

.menu {
  position: absolute; right: 0; top: 24px; z-index: 5;
  background: var(--raised); border: 1px solid var(--line-strong); border-radius: 8px;
  padding: 4px; width: 260px; max-height: 60vh; overflow: auto;
  box-shadow: 0 8px 24px rgba(0,0,0,.5);
}
.menu .stage { margin: 6px 6px 2px; }
.menu button {
  display: block; width: 100%; text-align: left; border: 0; background: none;
  padding: 4px 6px; border-radius: 5px;
}
.menu button:hover:not(:disabled) { background: var(--line); }
.menu button:disabled { color: var(--faint); cursor: default; }
.menu button small { display: block; color: var(--muted); font-size: 11px; }

/* Picture and the game */

#frame { flex: 1; min-height: 240px; border: 0; width: 100%; background: #000; display: block; }
.strip {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 8px 12px; border-top: 1px solid var(--line);
}
.strip h2 { font-size: 12px; font-weight: 600; margin: 0; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); width: 100%; }
.strip label { color: var(--muted); display: flex; align-items: center; gap: 6px; }
.signal { display: flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 12px; }
.signal input { width: 120px; }
.buttons { display: flex; gap: 4px; flex-wrap: wrap; }
.empty { color: var(--faint); font-size: 12px; }

/* Code */

.tabs { display: flex; align-items: center; gap: 4px; padding: 8px 10px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.tabs .spacer { flex: 1; }
#code pre {
  margin: 0; padding: 10px 0; overflow: auto; flex: 1;
  font: 12px/1.55 var(--mono); tab-size: 4; color: var(--text);
}
#code pre span { display: block; padding: 0 12px; white-space: pre; min-width: 100%; width: max-content; }
#code pre span[data-id] { cursor: pointer; }
#code pre span.hl { background: var(--accent-bg); box-shadow: inset 2px 0 0 var(--accent); }
#code pre span.flash { background: #3a2f17; box-shadow: inset 2px 0 0 var(--live); }
#code .k { color: #c792ea; }
#code .s { color: #c3e88d; }
#code .n { color: #f78c6c; }
#code .c { color: var(--faint); }
#code .t { color: #82aaff; }
.toast {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--raised); border: 1px solid var(--line-strong); border-radius: 8px;
  padding: 6px 12px; opacity: 0; transition: opacity .2s; pointer-events: none;
  max-width: min(640px, calc(100vw - 32px));
}
.toast.shown { opacity: 1; }
#code pre i { font-style: normal; }
[hidden] { display: none !important; }
#code pre span:empty::before { content: " "; }