:root {
  --bg: #0f1419;
  --panel: #161c24;
  --line: #263240;
  --fg: #dfe7ef;
  --dim: #8fa3b8;
  --rack: #2b3946;
  --node: #3f5570;
  --edge: #34455a;
  --station: #4c78a8;
  --charger: #e69f00;
  --amr: #00d1a0;
  --path: #ff5f7e;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 13px/1.45 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

h1 { font-size: 15px; margin: 0 12px 0 0; font-weight: 600; }
h2 { font-size: 13px; margin: 0 0 6px; }
h3 { font-size: 12px; margin: 14px 0 4px; color: var(--dim); }

.hud { display: flex; gap: 6px; flex-wrap: wrap; }

.pill {
  background: #101820;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 10px;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
}

button {
  background: #223145;
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 12px;
  cursor: pointer;
}

button:hover { background: #2c3f58; }

.controls { display: flex; gap: 8px; align-items: center; margin-left: auto; }
.controls label { color: var(--dim); display: flex; gap: 6px; align-items: center; }
.controls input {
  width: 72px;
  background: #101820;
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 4px 6px;
}

main { display: flex; align-items: flex-start; gap: 14px; padding: 14px 16px; }
.canvas-wrap { position: relative; }
canvas { background: #0b1016; border: 1px solid var(--line); border-radius: 8px; }

.legend {
  position: absolute;
  left: 12px;
  bottom: 12px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  background: rgba(11, 16, 22, .82);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 10px;
  color: var(--dim);
  font-size: 11px;
}

.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; }
.sw-rack { background: var(--rack); }
.sw-node { background: var(--node); }
.sw-edge { background: var(--edge); }
.sw-station { background: var(--station); }
.sw-charger { background: var(--charger); }
.sw-amr { background: var(--amr); }
.sw-path { background: var(--path); }

aside { width: 440px; max-height: 820px; overflow: auto; }

table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 3px 5px; border-bottom: 1px solid var(--line); }
th { color: var(--dim); font-weight: 500; font-size: 11px; }
td.num { text-align: right; }

pre {
  background: #101820;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px;
  margin: 0;
  font-size: 11px;
  white-space: pre-wrap;
}

.soc-bar { display: inline-block; width: 44px; height: 7px; background: #223145; border-radius: 3px; vertical-align: middle; }
.soc-fill { display: block; height: 100%; background: var(--amr); border-radius: 3px; }

footer { padding: 8px 16px; color: var(--dim); border-top: 1px solid var(--line); font-size: 11px; }
.ok { color: #4bd07a; }
.bad { color: #ff6b6b; }
.focus-row { outline: 1px solid var(--path); }
button.danger { background: #7a1f2b; border-color: #b3324a; color: #ffd9df; }
button.danger:hover { background: #9c2739; }
.pill.danger-pill { background: #7a1f2b; color: #ffd9df; }