:root {
  --bg: #050607;
  --panel: #0a0d0e;
  --line: #1c2425;
  --ink: #b8c4c2;
  --dim: #56625f;
  --accent: #7cf0c0;
  --warn: #f0b05a;
  --bad: #f07a6a;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 13px/1.45 ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}
body::after {
  content: ""; position: fixed; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,.18) 0 1px, transparent 1px 3px);
}
button {
  font: inherit; color: var(--ink); background: transparent;
  border: 1px solid var(--line); padding: 4px 10px; cursor: pointer;
}
button:hover { border-color: var(--accent); color: var(--accent); }
button:disabled { opacity: .35; cursor: default; border-color: var(--line); color: var(--ink); }
input, textarea {
  font: inherit; color: var(--ink); background: #000;
  border: 1px solid var(--line); padding: 4px 6px; width: 100%;
}
input:focus, textarea:focus { outline: none; border-color: var(--accent); }
.dim { color: var(--dim); font-weight: normal; }
[hidden] { display: none !important; }

/* overlays */
.overlay {
  position: fixed; inset: 0; background: #000; z-index: 10;
  display: flex; align-items: center; justify-content: center; padding: 24px;
}
.boot-inner { max-width: 640px; width: 100%; }
.boot-inner pre { white-space: pre-wrap; margin: 0 0 24px; min-height: 1em; }
.boot-inner button { margin: 0 10px 10px 0; padding: 8px 16px; }
.sci { display: block; margin-top: 18px; color: var(--dim); cursor: pointer; }
.sci input { width: auto; margin-right: 6px; }
.sci span { display: block; padding-left: 22px; font-size: 11px; }
#end-title {
  font-size: clamp(22px, 4.5vw, 40px); letter-spacing: .08em; color: #fff;
  margin: 24px 0; animation: fadein 3s ease;
}
@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }

/* app */
header {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  padding: 10px 16px; border-bottom: 1px solid var(--line);
}
header .node { color: var(--accent); letter-spacing: .1em; }
#clock { color: var(--dim); }
.spacer { flex: 1; }
main {
  display: grid; gap: 12px; padding: 12px 16px;
  grid-template-columns: minmax(300px, 1fr) minmax(300px, 1.15fr) minmax(280px, 1fr);
  align-items: start;
}
@media (max-width: 1050px) { main { grid-template-columns: 1fr 1fr; } }
@media (max-width: 700px) { main { grid-template-columns: 1fr; } }
.col { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.panel { background: var(--panel); border: 1px solid var(--line); padding: 10px 12px; }
.panel h2 { font-size: 11px; letter-spacing: .14em; margin: 0 0 8px; color: var(--dim); }

/* channel rows */
.row {
  display: grid; grid-template-columns: 34px 1fr 64px 84px; gap: 8px; align-items: center;
  padding: 3px 4px; cursor: pointer; border-left: 2px solid transparent;
}
.row:hover { background: #0f1415; }
.row.sel { border-left-color: var(--accent); background: #0d1312; }
.row.new { animation: flash 2.5s ease; }
@keyframes flash { 0%, 40% { background: rgba(124,240,192,.25); } 100% { background: transparent; } }
.cid { color: var(--accent); }
.cname { color: var(--warn); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-transform: uppercase; font-size: 11px; }
.cval { text-align: right; font-variant-numeric: tabular-nums; }
.spark { width: 84px; height: 18px; display: block; }
.arow { display: grid; grid-template-columns: 34px 1fr 1.4fr 48px; gap: 8px; align-items: center; padding: 5px 4px; cursor: pointer; border-left: 2px solid transparent; }
.arow.sel { border-left-color: var(--accent); background: #0d1312; }
.arow input[type=range] { width: 100%; accent-color: var(--accent); border: 0; padding: 0; background: transparent; }
.arow button { padding: 1px 8px; justify-self: start; min-width: 52px; }
.arow button.on { color: #000; background: var(--accent); border-color: var(--accent); }

/* optical */
#opt { display: flex; justify-content: center; }
.optgrid { display: grid; gap: 2px; font-variant-numeric: tabular-nums; }
.optgrid span { text-align: center; padding: 4px 0; min-width: 34px; }
.optgrid.n8 span { min-width: 30px; font-size: 11px; padding: 2px 0; }
#opt canvas { width: 100%; max-width: 320px; aspect-ratio: 1; image-rendering: pixelated; background: #000; }
#map { width: 100%; background: #000; }

/* bus */
#bus { height: 210px; overflow-y: auto; font-size: 12px; background: #000; padding: 4px 6px; border: 1px solid var(--line); }
#bus div { white-space: pre; color: var(--dim); }
#bus div.tx { color: var(--accent); }
#bus div.rx { color: var(--ink); }
#bus-form { display: flex; gap: 6px; margin-top: 6px; }
#bus-form input { text-transform: uppercase; }

/* journal */
#journal label { display: block; color: var(--dim); font-size: 11px; margin: 8px 0 3px; }
#journal textarea { height: 90px; resize: vertical; }
#journal .jhead { color: var(--accent); }
#journal .jhead span { color: var(--dim); }
.corr { display: grid; grid-template-columns: 70px 52px 1fr; gap: 6px; align-items: center; font-size: 12px; }
.corr .bar { height: 6px; background: var(--accent); opacity: .6; }
.corr .bar.neg { background: var(--warn); }

/* log */
#log { max-height: 320px; overflow-y: auto; font-size: 12px; }
#log div { padding: 1px 0; }
#log .t { color: var(--dim); margin-right: 8px; }
#log .sys { color: var(--accent); }
#log .hint { color: var(--warn); }
#log .warn { color: var(--bad); }