:root {
  --bg: #14161c;
  --panel: #1d2029;
  --panel-border: #2c3040;
  --text: #e8eaf0;
  --text-dim: #9aa0b0;
  --accent: #ffb347;
  --dem: #4a90d9;
  --rep: #d95f4a;
  font-size: 15px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem 0.5rem;
  flex-wrap: wrap;
}

h1 { margin: 0; font-size: 1.5rem; letter-spacing: 0.02em; }
.subtitle { margin: 0.15rem 0 0; color: var(--text-dim); }

.controls { display: flex; gap: 0.8rem; flex-wrap: wrap; }

.toggle button {
  background: var(--panel);
  color: var(--text-dim);
  border: 1px solid var(--panel-border);
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  font: inherit;
  margin-left: -1px;
}
.toggle button:first-child { border-radius: 6px 0 0 6px; margin-left: 0; }
.toggle button:last-child { border-radius: 0 6px 6px 0; }
.toggle button.active {
  background: var(--accent);
  color: #1a1408;
  border-color: var(--accent);
  font-weight: 600;
}
#chamber-toggle button.active { background: var(--dem); border-color: var(--dem); color: #fff; }

#topline {
  position: absolute;
  top: 12px;
  left: 14px;
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  background: rgba(20, 22, 28, 0.85);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 0.8rem;
  color: var(--text-dim);
  z-index: 2;
  pointer-events: none;
}
#topline b.dem { color: var(--dem); }
#topline b.rep { color: var(--rep); }
#topline .env { color: var(--accent); }

.race-notes {
  font-size: 0.8rem;
  color: var(--accent) !important;
  margin: 0.4rem 0 0.8rem !important;
}

.how-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  align-self: center;
  padding: 0.45rem 0.4rem;
}
.how-link:hover { text-decoration: underline; }

.power-block {
  background: rgba(255, 179, 71, 0.07);
  border: 1px solid rgba(255, 179, 71, 0.35);
  border-radius: 8px;
  padding: 0.7rem 0.9rem;
  margin: 0.8rem 0 1rem;
}
.power-headline {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.8rem;
}
.power-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.power-split {
  margin-top: 0.25rem;
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* explainer page */
.prose {
  max-width: 760px;
  margin: 0 auto;
  padding: 0.5rem 1.5rem 3rem;
  line-height: 1.65;
}
.prose h2 { margin: 2rem 0 0.6rem; font-size: 1.25rem; }
.prose h3 { margin: 1.4rem 0 0.4rem; font-size: 1.02rem; color: var(--accent); }
.prose p, .prose li { color: var(--text); font-size: 0.95rem; }
.prose .dim { color: var(--text-dim); }
.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 0.8rem 0;
}
.prose th, .prose td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--panel-border);
  vertical-align: top;
}
.prose th { color: var(--text-dim); font-weight: 600; }
.prose code {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 0.05rem 0.35rem;
  font-size: 0.85em;
}
.prose .formula {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 0.7rem 1rem;
  margin: 0.7rem 0;
  font-family: Consolas, monospace;
  font-size: 0.9rem;
  overflow-x: auto;
}

/* interactive levers (power.html) */
.lever-box {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 1rem 1.2rem;
  margin: 1rem 0;
}
.lever-row {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin: 0.6rem 0;
}
.lever-row label { width: 110px; color: var(--text-dim); font-size: 0.85rem; flex-shrink: 0; }
.lever-row input[type="range"] { flex: 1; accent-color: var(--accent); }
.lever-row .lever-val {
  width: 140px;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 0.9rem;
}
.pres-toggle button {
  background: var(--bg);
  color: var(--text-dim);
  border: 1px solid var(--panel-border);
  padding: 0.3rem 0.8rem;
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
}
.pres-toggle button:first-child { border-radius: 6px 0 0 6px; }
.pres-toggle button:last-child { border-radius: 0 6px 6px 0; margin-left: -1px; }
.pres-toggle button.active.pd { background: var(--dem); border-color: var(--dem); color: #fff; }
.pres-toggle button.active.pr { background: var(--rep); border-color: var(--rep); color: #fff; }

.balance-readout {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin: 0.8rem 0 0.4rem;
  flex-wrap: wrap;
}
.balance-readout .big { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.balance-readout .big.dem { color: var(--dem); }
.balance-readout .big.rep { color: var(--rep); }
.marginals { color: var(--text-dim); font-size: 0.82rem; }

.channel-bars { margin-top: 0.6rem; }
.cbar-row { display: flex; align-items: center; gap: 0.6rem; margin: 0.25rem 0; font-size: 0.8rem; }
.cbar-row .cbar-label { width: 110px; color: var(--text-dim); flex-shrink: 0; }
.cbar-track { flex: 1; height: 12px; position: relative; background: var(--bg); border-radius: 3px; }
.cbar-track .zero { position: absolute; left: 50%; top: -2px; bottom: -2px; width: 1px; background: var(--panel-border); }
.cbar-fill { position: absolute; top: 1px; bottom: 1px; border-radius: 2px; }
.cbar-row .cbar-num { width: 48px; text-align: right; font-variant-numeric: tabular-nums; color: var(--text-dim); }

.heatmap-wrap { display: flex; gap: 1.2rem; flex-wrap: wrap; margin: 0.8rem 0; }
.heatmap-cell { flex: 1; min-width: 280px; }
.heatmap-cell canvas { width: 100%; border: 1px solid var(--panel-border); border-radius: 6px; display: block; }
.heatmap-cell .hm-title { font-size: 0.85rem; margin-bottom: 0.3rem; color: var(--text); font-weight: 600; }
.heatmap-cell .hm-axis { font-size: 0.72rem; color: var(--text-dim); display: flex; justify-content: space-between; margin-top: 2px; }
.hm-legend { font-size: 0.78rem; color: var(--text-dim); margin-top: 0.3rem; }

main {
  display: flex;
  flex: 1;
  gap: 1rem;
  padding: 0.5rem 1.5rem 1rem;
  min-height: 0;
}

/* map page: lock layout to the viewport so hover-driven panel content
   changes can never reflow (and thus jump) the map */
body.app {
  height: 100vh;
  overflow: hidden;
}
body.app main { overflow: hidden; }

#map-wrap {
  position: relative;
  flex: 1;
  min-width: 0;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  overflow: hidden;
}

#map { display: block; width: 100%; height: 100%; min-height: 480px; }

.district {
  stroke: #0e1014;
  stroke-width: 0.4;
  cursor: pointer;
  transition: filter 0.1s;
}
.district:hover { filter: brightness(1.25); }
.district.hovered { stroke: #fff; stroke-width: 1.2; }
.district.pinned { stroke: var(--accent); stroke-width: 1.4; }

#legend {
  position: absolute;
  left: 14px;
  bottom: 12px;
  background: rgba(20, 22, 28, 0.85);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.78rem;
  color: var(--text-dim);
}

#reset-zoom {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(20, 22, 28, 0.85);
  color: var(--text);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
}
#reset-zoom:hover { border-color: var(--accent); }

#panel {
  width: 320px;
  flex-shrink: 0;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 1.1rem 1.2rem;
  position: relative;
  overflow-y: auto;
}

#panel-empty[hidden],
#panel-content[hidden] { display: none; }

#panel-empty {
  color: var(--text-dim);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  line-height: 1.6;
}

#panel-close {
  position: absolute;
  top: 8px;
  right: 10px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
}
#panel-close:hover { color: var(--text); }

#d-name { margin: 0; font-size: 1.45rem; }
#panel p { color: var(--text-dim); margin: 0.2rem 0 0.9rem; }

.stat-grid { display: flex; flex-direction: column; gap: 0.55rem; margin-bottom: 1rem; }
.stat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.8rem;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 0.45rem;
}
.stat-label { color: var(--text-dim); font-size: 0.82rem; }
.stat-value { font-weight: 600; font-variant-numeric: tabular-nums; text-align: right; }

#panel h3 { margin: 0.4rem 0 0.3rem; font-size: 0.9rem; color: var(--text-dim); font-weight: 600; }
.forecast-chart { width: 100%; height: 110px; display: block; }
.chart-note { font-size: 0.72rem; }

#tooltip {
  position: fixed;
  pointer-events: none;
  background: rgba(14, 16, 20, 0.95);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
  font-size: 0.82rem;
  line-height: 1.5;
  max-width: 240px;
  z-index: 10;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
}
#tooltip .tt-name { font-weight: 700; font-size: 0.95rem; }
#tooltip .tt-row { display: flex; justify-content: space-between; gap: 1rem; color: var(--text-dim); }
#tooltip .tt-row b { color: var(--text); font-weight: 600; }

footer {
  padding: 0.4rem 1.5rem 0.9rem;
  color: var(--text-dim);
  font-size: 0.75rem;
}
footer p { margin: 0; }
footer a { color: var(--text-dim); }
footer .credit { margin-top: 0.3rem; opacity: 0.85; }

@media (max-width: 900px) {
  body.app { height: auto; overflow: auto; }
  body.app main { overflow: visible; }
  main { flex-direction: column; }
  #panel { width: 100%; max-height: 60vh; }
  #map { min-height: 340px; }
}