:root {
  --bg: #06080c;
  --panel: #0d1118;
  --border: #1e2a3a;
  --text: #d8e4f0;
  --muted: #6a7f94;
  --accent: #3d9ee8;
  --accent-dim: #1a4a72;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 14px;
}

.sim-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.sim-brand h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
}
.sim-brand p { margin: 0.15rem 0 0; font-size: 0.75rem; color: var(--muted); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
}
.crumb {
  background: var(--accent-dim);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: inherit;
}
.crumb:hover { border-color: var(--accent); }
.breadcrumb span { color: var(--muted); }

.sim-layout {
  display: grid;
  grid-template-columns: minmax(200px, 260px) 1fr minmax(240px, 320px);
  gap: 1px;
  background: var(--border);
  min-height: calc(100vh - 88px);
}
.panel {
  background: var(--panel);
  padding: 0.75rem;
  overflow: auto;
}
.panel-title {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.exp-scales {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}
.scale-btn {
  font-size: 0.7rem;
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  border-radius: 4px;
  cursor: pointer;
}
.scale-btn.on {
  border-color: var(--accent);
  color: var(--accent);
}
.badge {
  background: var(--accent-dim);
  padding: 0 0.3rem;
  border-radius: 3px;
  font-size: 0.65rem;
}

.exp-tree { list-style: none; margin: 0; padding: 0; }
.exp-item {
  display: grid;
  grid-template-columns: 2rem 1fr auto;
  gap: 0.35rem;
  width: 100%;
  text-align: left;
  padding: 0.35rem 0.4rem;
  border: none;
  background: transparent;
  color: var(--text);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
  align-items: center;
}
.exp-item:hover, .exp-item.on { background: var(--accent-dim); }
.exp-kind { font-size: 0.65rem; color: var(--muted); }
.exp-name { font-weight: 500; }
.exp-item code { font-size: 0.65rem; color: var(--accent); }

.graph {
  width: 100%;
  height: min(52vh, 480px);
  display: block;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #0a0e14;
}

.insp-head h2 { margin: 0.25rem 0; font-size: 1rem; }
.insp-head code { color: var(--accent); font-size: 0.85em; }
.insp-kind {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.insp-head p { color: var(--muted); font-size: 0.85rem; line-height: 1.45; }

section { margin-top: 1rem; }
section h3 {
  margin: 0 0 0.4rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.sim-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}
.sim-table th {
  text-align: left;
  color: var(--muted);
  font-weight: 500;
  padding: 0.2rem 0.5rem 0.2rem 0;
  vertical-align: top;
}
.sim-table td { padding: 0.2rem 0; }

.rel-list { list-style: none; margin: 0; padding: 0; }
.rel-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.35rem 0.5rem;
  margin-bottom: 0.25rem;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.78rem;
}
.rel-btn:hover { border-color: var(--accent); }
.rel-type { color: var(--accent); font-size: 0.7rem; }
.rel-btn em { display: block; color: var(--muted); font-size: 0.7rem; }

.chip-row { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.chip {
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  border-radius: 999px;
  font-size: 0.75rem;
  cursor: pointer;
}
.chip:hover { border-color: var(--accent); }

.sim-muted { color: var(--muted); font-size: 0.85rem; }

.sim-foot {
  padding: 0.5rem 1rem;
  font-size: 0.72rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: space-between;
}
.sim-foot a { color: var(--accent); }

/* ── Demos interactivos ── */
.demo-box {
  margin-bottom: 1rem;
  padding: 0.75rem;
  border: 1px solid var(--accent-dim);
  border-radius: 6px;
  background: #0a1018;
}
.demo-box h3 {
  margin: 0 0 0.6rem;
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.demo-note { font-size: 0.75rem; color: var(--muted); margin: 0 0 0.75rem; }

.sw-diagram {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
  font-size: 0.75rem;
}
.wire {
  width: 28px;
  height: 3px;
  background: #333;
}
.wire.on { background: #f0c040; box-shadow: 0 0 6px #f0c040; }
.wire.gnd { background: #555; }
.sw-btn {
  min-width: 48px;
  padding: 0.35rem 0.5rem;
  border: 2px solid #666;
  background: #222;
  color: #aaa;
  font-weight: bold;
  cursor: pointer;
  border-radius: 4px;
}
.sw-btn.closed {
  background: #2a5a2a;
  border-color: #4c4;
  color: #cfc;
}
.lamp { font-size: 1.5rem; filter: grayscale(1) brightness(0.4); }
.lamp.on { filter: none; }

.house-tabs { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 0.75rem; }
.htab {
  font-size: 0.7rem;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  border-radius: 4px;
  cursor: pointer;
}
.htab.on { border-color: var(--accent); color: var(--accent); }
.demo-slider {
  display: block;
  font-size: 0.78rem;
  margin-bottom: 0.5rem;
  color: var(--muted);
}
.demo-slider input { width: 100%; margin-top: 0.25rem; }
.flow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.35rem;
  margin: 0.75rem 0;
}
.flow-node {
  padding: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.72rem;
  text-align: center;
}
.flow-node.export { border-color: #4a8; color: #8fc; }
.demo-cost { font-size: 0.8rem; margin: 0; }

.emu-grid { display: flex; flex-direction: column; gap: 0.5rem; }
.emu-card {
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.78rem;
}
.emu-card.ok { border-left: 3px solid #4c8; }
.emu-card.warn { border-left: 3px solid #c90; }
.emu-card.off { border-left: 3px solid #666; }
.emu-card h4 { margin: 0 0 0.25rem; font-size: 0.85rem; }
.emu-card p { margin: 0 0 0.35rem; color: var(--muted); }
.badge-ok { color: #8fc; font-size: 0.65rem; }
.badge-warn { color: #fc8; font-size: 0.65rem; }
.badge-off { color: #888; font-size: 0.65rem; }
.demo-launch {
  display: inline-block;
  margin-top: 0.25rem;
  padding: 0.25rem 0.5rem;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 4px;
  text-decoration: none;
  font-size: 0.75rem;
}
.demo-launch:hover { background: var(--accent); color: #000; }
.demo-pending { font-size: 0.7rem; color: var(--muted); font-style: italic; }

@media (max-width: 900px) {
  .sim-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }
}