/* styles.css */
:root {
  --floors: 10;
  --floor-height: 72px;
  --building-width: 720px;
  --shaft-width: 110px;
  --elevator-size: 58px;
  --bg: #0f172a;
  --panel: #111827;
  --line: #334155;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --up: #22c55e;
  --down: #f97316;
  --idle: #a78bfa;
}

* {
  box-sizing: border-box;
}

body {
  color: var(--text);
  background: linear-gradient(#020617 0%, #0b1224 100%);
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Noto Sans, Ubuntu, Cantarell, Helvetica Neue, Arial, sans-serif;
}

.app-header {
  position: sticky;
  z-index: 10;
  backdrop-filter: blur(6px);
  background: #111827d9;
  border-bottom: 1px solid #1f2937;
  padding: 18px 24px;
  top: 0;
}

.app-header h1 {
  margin: 0 0 6px;
  font-size: 1.35rem;
}

.meta {
  color: var(--muted);
  margin: 0;
  font-size: .9rem;
}

.app {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 18px;
  padding: 18px;
}

.building-panel, .status-panel {
  background: #111827e6;
  border: 1px solid #1f2937;
  border-radius: 12px;
  padding: 14px;
}

.building {
  width: var(--building-width);
  position: relative;
  border: 1px solid var(--line);
  overflow: hidden;
  border-radius: 10px;
  max-width: 100%;
  margin: 0 auto;
}

.floor-row {
  height: var(--floor-height);
  display: grid;
  grid-template-columns: 64px 1fr;
  position: relative;
  background: #02061759;
  border-top: 1px dashed #334155;
  align-items:  center;
}

.floor-row:first-child {
  border-top: 0;
}

.floor-label {
  text-align: center;
  color: #93c5fd;
  font-weight: 700;
}

.floor-controls {
  display: flex;
  gap: 8px;
  padding-left: 8px;
}

button {
  color: #e2e8f0;
  cursor: pointer;
  background: #1e293b;
  border: 1px solid #475569;
  border-radius: 8px;
  padding: 6px 8px;
}

button:hover {
  background: #334155;
}

button.active {
  outline: 2px solid #facc15;
}

.shafts {
  position: absolute;
  width: calc(var(--shaft-width) * 4);
  border-left: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(4, var(--shaft-width));
  top: 0;
  bottom: 0;
  right: 0;
}

.shaft {
  position: relative;
  border-left: 1px solid #243246;
}

.shaft:first-child {
  border-left: 0;
}

.elevator {
  position: absolute;
  width: var(--elevator-size);
  height: var(--elevator-size);
  display: flex;
  background: #312e81;
  border: 1px solid #6366f1;
  border-radius: 8px;
  flex-direction: column;
  justify-content: center;
  align-items:  center;
  gap: 3px;
  transition: top .85s linear, background .2s;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 6px 12px #00000073;
}

.elevator.idle {
  background: #5b21b6;
}

.elevator.up {
  background: #166534;
}

.elevator.down {
  background: #9a3412;
}

.elevator .name {
  font-size: .72rem;
  font-weight: 700;
}

.elevator .at {
  color: #cbd5e1;
  font-size: .66rem;
}

.car-panel {
  position: absolute;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  width: calc(var(--shaft-width)  - 12px);
  gap: 4px;
  top: 6px;
  right: 6px;
}

.car-panel button {
  border-radius: 5px;
  padding: 3px 0;
  font-size: .65rem;
}

.status-panel h2 {
  margin-top: 0;
}

.elevator-status {
  background: #0b1220;
  border: 1px solid #334155;
  border-radius: 8px;
  margin-bottom: 8px;
  padding: 10px;
}

.legend {
  color: var(--muted);
  margin-top: 12px;
}

.dot {
  display: inline-block;
  border-radius: 50%;
  width: 10px;
  height: 10px;
}

.dot.idle {
  background: var(--idle);
}

.dot.up {
  background: var(--up);
}

.dot.down {
  background: var(--down);
}

@media (max-width: 1150px) {
  .app {
    grid-template-columns: 1fr;
  }
}