:root {
  --bg: #071018;
  --bg-panel: #0b1c24;
  --bg-raised: #10262f;
  --line: #1c4a55;
  --line-strong: #2e7380;
  --ink: #d5ece8;
  --muted: #7ea3a8;
  --accent: #3ec8c8;
  --accent-dim: #1a6d70;
  --gold: #d7a04a;
  --danger: #e06b6b;
  --ok: #6ecb8b;
  --peer: #0c2c36;
  --lan: #142818;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --sans: ui-sans-serif, system-ui, "Segoe UI", "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font: 13.5px/1.45 var(--sans);
}

body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100%;
}

body.tests-page {
  display: block;
  height: auto;
  padding: 24px;
  max-width: 820px;
  margin: 0 auto;
}

.tests-page #results { font-family: var(--mono); font-size: 13px; }
.tests-page .pass { color: var(--ok); }
.tests-page .fail { color: var(--danger); }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

h1, h2 {
  margin: 0;
  font-weight: 600;
  letter-spacing: 0.02em;
}

h1 { font-size: 16px; }
h2 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 8px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #0d2430, #0a1b22);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logomark {
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--accent);
  transform: rotate(45deg);
  box-shadow: 8px 0 0 -6px var(--gold), -8px 0 0 -6px var(--line-strong);
}

.tag {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.pill {
  font-family: var(--mono);
  font-size: 11px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
}

.pill.ok { color: var(--ok); border-color: #2a6a44; }
.pill.warn { color: var(--gold); border-color: #7a5a22; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-raised);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
}

.btn:hover { border-color: var(--accent); }
.btn.primary { background: #12464a; border-color: var(--accent); }
.btn.danger { border-color: #7a3030; }
.btn.danger:hover { border-color: var(--danger); }
.btn.small { padding: 4px 8px; font-size: 12px; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.workspace {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr) 280px;
  min-height: 0;
  min-width: 0;
}

.palette, .inspector {
  background: var(--bg-panel);
  border-right: 1px solid var(--line);
  padding: 12px;
  overflow: auto;
  min-height: 0;
  min-width: 0;
  z-index: 1;
}

.inspector { border-right: 0; border-left: 1px solid var(--line); }

.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 8px;
}

.tool {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  padding: 8px 6px;
  border-radius: 4px;
  cursor: pointer;
}

.tool.on {
  border-color: var(--accent);
  color: var(--accent);
  background: #10353a;
}

.hint, .muted { color: var(--muted); font-size: 12px; }
.hint { margin: 0 0 16px; }

.preset-list { display: grid; gap: 6px; margin-bottom: 16px; }

.side-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.side-list li {
  padding: 6px 8px;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 12px;
}

.side-list li:hover, .side-list li.on {
  border-color: var(--line-strong);
  background: var(--bg-raised);
}

.stage {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background:
    radial-gradient(1200px 500px at 50% -10%, rgba(62, 200, 200, 0.05), transparent 50%),
    var(--bg);
}

#board {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#board.panning { cursor: grabbing; }
#board.connecting { cursor: crosshair; }

.empty-hint {
  position: absolute;
  left: 50%;
  top: 46%;
  transform: translate(-50%, -50%);
  color: var(--muted);
  pointer-events: none;
  text-align: center;
  max-width: 280px;
}

.empty-hint.hide { display: none; }

.insp-body { display: grid; gap: 8px; }

.field { display: grid; gap: 4px; }
.field span { color: var(--muted); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; }

.field input, .field select, .field textarea {
  background: #07141a;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 6px 8px;
  width: 100%;
}

.field textarea, .field input.mono { font-family: var(--mono); font-size: 12px; }
.field textarea { min-height: 64px; resize: vertical; }

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
}

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

.why {
  background: #07141a;
  border: 1px dashed var(--line-strong);
  border-radius: 4px;
  padding: 8px;
  font-size: 12px;
}

.why ul { margin: 6px 0 0; padding-left: 16px; }
.conf-preview {
  font-family: var(--mono);
  font-size: 11px;
  white-space: pre-wrap;
  background: #050c10;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px;
  max-height: 220px;
  overflow: auto;
}

.bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
  max-height: 220px;
}

.issues, .summary {
  padding: 10px 14px;
  overflow: auto;
}

.issues { border-right: 1px solid var(--line); }

#issue-list, .reach-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

#issue-list li, .reach-list li {
  padding: 4px 0;
  cursor: pointer;
  font-size: 12.5px;
}

#issue-list li.error { color: var(--danger); }
#issue-list li.warn { color: var(--gold); }
#issue-list li.ok { color: var(--ok); cursor: default; }

.summary-body p { margin: 0 0 8px; }
.summary-body button.link {
  background: none;
  border: 0;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  font: inherit;
}

.summary-body button.link:hover { text-decoration: underline; }

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: grid;
  place-items: center;
  z-index: 20;
}

.modal.hidden { display: none; }

.modal-card {
  background: var(--bg-panel);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  min-width: 320px;
  max-width: 90vw;
  box-shadow: var(--shadow);
  padding: 12px;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.qr-wrap {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 8px;
  background: #fff;
  border-radius: 4px;
}

.qr-wrap svg { width: 240px; height: 240px; }

.node-label { font: 12px var(--sans); fill: var(--ink); }
.node-sub { font: 10px var(--mono); fill: var(--muted); }

@media (max-width: 860px) {
  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(140px, 0.35fr) minmax(180px, 1fr) minmax(120px, 0.4fr);
  }
  .palette, .inspector {
    border: 0;
    border-bottom: 1px solid var(--line);
  }
  .bottom { grid-template-columns: 1fr; max-height: none; }
  .issues { border-right: 0; border-bottom: 1px solid var(--line); }
}