@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Share+Tech+Mono&display=swap");

:root {
  --bg: #05050f;
  --panel: #23263c;
  --panel-2: #191c2d;
  --accent: #5082c8;
  --head: #78c8ff;
  --text: #ffffff;
  --text-2: #dcdce6;
  --muted: #aaaabe;
  --dim: #505064;
  --line: #50506e;
  --n2o: #4f9fd4;
  --fuel: #c4a35a;
  --signal: #e2c15a;
  --good: #3dcc6f;
  --warn: #e0c040;
  --bad: #e05050;
  --fire: #ff6a3d;
  font-size: 13px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text-2);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  overflow: hidden;
}

#app {
  display: grid;
  grid-template-rows: 42px 1fr 40px;
  grid-template-columns: 168px 1fr 340px;
  grid-template-areas:
    "top top top"
    "pal view side"
    "bot bot bot";
  height: 100%;
}

#top {
  grid-area: top;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--accent);
}
#top h1 {
  font-family: "Share Tech Mono", "IBM Plex Mono", monospace;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--text);
  text-transform: uppercase;
}
#top h1 em { color: var(--head); font-style: normal; }
#top .back {
  color: var(--head);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.04em;
}
#top .back:hover { text-decoration: underline; }
#top .spacer { flex: 1; }

#palette {
  grid-area: pal;
  background: var(--panel);
  border-right: 1px solid #2c3048;
  padding: 10px 8px;
  overflow-y: auto;
}
#presetList button {
  width: 100%;
  margin-bottom: 5px;
  overflow: hidden;
  text-overflow: ellipsis;
}
#view {
  grid-area: view;
  position: relative;
  background: var(--bg);
  min-width: 0;
}
#view canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}
#side {
  grid-area: side;
  background: var(--panel);
  border-left: 1px solid #2c3048;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow-y: auto;
}
#bot {
  grid-area: bot;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  background: var(--panel);
  border-top: 1px solid var(--accent);
  font-size: 12px;
}

.sec {
  color: var(--head);
  letter-spacing: 0.14em;
  font-size: 11px;
  margin: 10px 4px 6px;
  text-transform: uppercase;
}
.pal-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border: 1px solid #3a3f5c;
  background: var(--panel-2);
  color: var(--text-2);
  cursor: grab;
  margin-bottom: 5px;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  user-select: none;
}
.pal-item:hover { border-color: var(--head); color: var(--text); }
.pal-item .swatch {
  width: 10px; height: 22px; background: var(--n2o); flex-shrink: 0;
}
.pal-item[data-type="valve"] .swatch { background: #8aa0c8; height: 10px; width: 18px; }
.pal-item[data-type="orifice"] .swatch { background: #6a7a94; height: 8px; width: 18px; }
.pal-item[data-type="chamber"] .swatch { background: var(--fire); clip-path: polygon(20% 0, 80% 0, 100% 100%, 0 100%); }
.pal-item[data-type="exit"] .swatch { background: #6e88aa; }
.pal-item[data-type="signal"] .swatch { background: var(--signal); height: 10px; width: 10px; }
.pal-item[data-type="supply"] .swatch { background: var(--n2o); border-radius: 6px 6px 2px 2px; }
.pal-item[data-type="monitor"] .swatch { background: #b58cff; height: 12px; width: 18px; }
.pal-item[data-type="integrator"] .swatch { background: #78c8ff; height: 10px; width: 16px; }

button, .btn {
  font-family: inherit;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--panel-2);
  color: var(--text-2);
  border: 1px solid var(--line);
  padding: 6px 10px;
  cursor: pointer;
}
button:hover, .btn:hover { border-color: var(--head); color: var(--text); }
button.primary { border-color: var(--fire); color: var(--fire); }
button.primary.on, button.primary:active { background: #3a1c14; }
button.good { border-color: var(--good); color: var(--good); }
button.good.on { background: #14321c; }
button:disabled { opacity: 0.4; cursor: default; }

#side .pane {
  padding: 8px 12px;
  border-bottom: 1px solid #2c3048;
  flex: 0 0 auto;
  overflow: visible;
}
#chart {
  display: block;
  width: 100%;
  height: 200px;
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.field { margin-bottom: 7px; }
.field label {
  display: block;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
.field input, .field select {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid #3a3f5c;
  padding: 5px 7px;
  font-family: inherit;
  font-size: 12px;
}
.field input:focus, .field select:focus { outline: 1px solid var(--head); border-color: var(--head); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.portrow { display: grid; grid-template-columns: 1.15fr 0.75fr 0.7fr; gap: 6px; }
.check {
  display: flex; align-items: center; gap: 6px;
  color: var(--muted); font-size: 11px; cursor: pointer; margin-bottom: 6px;
}
.check input { width: auto; accent-color: var(--head); }

.kv { display: grid; grid-template-columns: 1fr auto; gap: 2px 10px; font-size: 12px; }
.kv span { color: var(--muted); }
.kv b { color: var(--text); font-weight: 500; text-align: right; font-variant-numeric: tabular-nums; }
.kv b.good { color: var(--good); }
.kv b.warn { color: var(--warn); }
.kv b.bad { color: var(--bad); }

#tankviz {
  width: 100%;
  height: 168px;
  display: block;
  background: var(--panel-2);
  border: 1px solid var(--line);
  margin: 6px 0;
}

.hint { color: var(--dim); font-size: 10px; line-height: 1.4; margin-top: 6px; }
#clock { color: var(--head); font-variant-numeric: tabular-nums; min-width: 7em; }
#status { color: var(--muted); flex: 1; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }

#help {
  position: absolute;
  left: 10px; bottom: 10px;
  color: var(--dim);
  font-size: 10px;
  line-height: 1.5;
  pointer-events: none;
  white-space: pre;
}