:root {
  --asphalt: #12140f;
  --panel: #1c2118;
  --rule: #3a4033;
  --paper: #d8d2c4;
  --dim: #9aa18c;
  --led: #ffd54a;
  --warn: #e85d04;
  --sans: "IBM Plex Sans", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--asphalt);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.45;
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 80px;
}

.mast {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px 20px;
}
.mast-copy { flex: 1 1 18rem; }
.mast-name {
  margin: 0;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1.35rem;
  line-height: 1.3;
  letter-spacing: 0.04em;
  color: var(--led);
}
.mast-line { margin: 6px 0 0; max-width: 46rem; overflow-wrap: anywhere; }
.mast-meta { margin: 4px 0 0; color: var(--dim); font-size: 0.92rem; }

.fuels {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 22px 0 18px;
}
.fuels button {
  font-family: var(--mono);
  font-size: 0.85rem;
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--rule);
  padding: 6px 10px;
  cursor: pointer;
}
.fuels button[aria-pressed="true"] {
  background: var(--led);
  color: var(--asphalt);
  border-color: var(--led);
}
.fuels button:focus-visible { outline: 2px solid var(--led); outline-offset: 2px; }

.totem {
  display: grid;
  grid-template-columns: minmax(220px, 280px) 1fr;
  gap: 18px;
  align-items: end;
  margin: 8px 0 28px;
}
.totem-board {
  background: #0b0c09;
  border: 4px solid #2a2e24;
  padding: 14px 16px 12px;
}
.totem-fuel {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--dim);
}
.totem-price {
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  color: var(--led);
  line-height: 1.05;
  letter-spacing: 0.02em;
}
.totem-unit { font-family: var(--mono); color: var(--dim); font-size: 0.85rem; }
.totem-note { margin: 0; color: var(--dim); font-size: 0.92rem; }

.panel { margin: 0 0 36px; }
.panel h2 {
  font-family: var(--sans);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--paper);
}
.why { margin: 0 0 10px; color: var(--dim); font-size: 0.9rem; max-width: 46rem; }

.chart { width: 100%; }
.chart svg { display: block; width: 100%; height: auto; }
.chart-scroll {
  max-height: 70vh;
  overflow-y: auto;
  scrollbar-width: none;
}
.chart-scroll::-webkit-scrollbar { width: 0; height: 0; display: none; }
.dept-scroll { display: flex; align-items: stretch; gap: 8px; }
.dept-scroll .chart-scroll { flex: 1; min-width: 0; width: auto; }
.vbar {
  display: flex;
  flex-direction: column;
  width: 18px;
  flex: 0 0 18px;
}
.vbar[hidden] { display: none; }
.vbar-btn {
  height: 16px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background-color: #0b0c09;
  background-repeat: no-repeat;
  background-position: center;
  background-size: 10px 6px;
  cursor: pointer;
}
.vbar-up {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23ffd54a' d='M5 0 L10 6 H0 Z'/%3E%3C/svg%3E");
}
.vbar-down {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23ffd54a' d='M0 0 H10 L5 6 Z'/%3E%3C/svg%3E");
}
.vbar-btn:focus-visible { outline: 2px solid var(--led); outline-offset: 2px; }
.vbar-track {
  position: relative;
  flex: 1;
  margin: 4px 0;
  background: #0b0c09;
  border: 1px solid #ffd54a;
  border-radius: 9px;
}
.vbar-thumb {
  position: absolute;
  left: 3px;
  right: 3px;
  background: #ffd54a;
  border-radius: 6px;
  min-height: 24px;
  cursor: grab;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.map-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 4px;
}
.map-head h2 { margin: 0; }
.toggle { display: flex; gap: 6px; }
.toggle button {
  font-family: var(--mono);
  font-size: 0.8rem;
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--rule);
  padding: 4px 8px;
  cursor: pointer;
}
.toggle button[aria-pressed="true"] {
  background: var(--led);
  color: var(--asphalt);
  border-color: var(--led);
}
.toggle button:focus-visible { outline: 2px solid var(--led); outline-offset: 2px; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--dim);
}
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i {
  width: 14px;
  height: 14px;
  display: inline-block;
  border: 1px solid #2a2e24;
}

.odbl { color: var(--dim); font-size: 0.82rem; max-width: 46rem; }
.mono { font-family: var(--mono); font-size: 0.84em; }

.tip {
  position: absolute;
  pointer-events: none;
  background: #0b0c09;
  color: var(--paper);
  border: 1px solid var(--rule);
  padding: 6px 8px;
  font-size: 0.82rem;
  font-family: var(--sans);
  max-width: 220px;
  z-index: 5;
}

.axis text { fill: var(--dim); font-family: var(--mono); font-size: 11px; }
.axis path, .axis line { stroke: var(--rule); }
.chart-label { fill: var(--paper); font-family: var(--mono); font-size: 11px; }

@media (max-width: 800px) {
  .split, .totem { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}