/* styles.css */
:root {
  --bg: #0f1220;
  --bg-2: #161a2e;
  --panel: #1c2138;
  --shaft: #11142a;
  --shaft-line: #2a2f4d;
  --text: #e8eaf6;
  --muted: #8b91b8;
  --accent: #fbbf24;
  --up: #34d399;
  --down: #f87171;
  --car: #60a5fa;
  --elev: linear-gradient(180deg, #4f8cf7 0%, #2c63c8 100%);
  --elev-up: linear-gradient(180deg, #4ade80 0%, #16a34a 100%);
  --elev-down: linear-gradient(180deg, #fb7185 0%, #be123c 100%);
  --elev-open: linear-gradient(180deg, #facc15 0%, #d97706 100%);
}

* {
  box-sizing: border-box;
}

html, body {
  background: radial-gradient(1200px 800px at 20% -10%, #1f2547 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
  margin: 0;
  padding: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, sans-serif;
}

.site-header {
  border-bottom: 1px solid #232847;
  padding: 24px 32px 16px;
}

.site-header h1 {
  letter-spacing: -.02em;
  margin: 0 0 12px;
  font-size: 28px;
  font-weight: 700;
}

.info-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.info-item {
  display: inline-flex;
  background: var(--panel);
  border: 1px solid #2a2f4d;
  border-radius: 999px;
  align-items:  center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 13px;
}

.info-key {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: 11px;
  font-weight: 600;
}

.info-val {
  color: var(--text);
  font-family: JetBrains Mono, ui-monospace, Menlo, monospace;
  font-weight: 600;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  align-items:  start;
  gap: 24px;
  padding: 24px 32px 32px;
}

.section-title {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 600;
}

.building-section, .panels-section {
  background: var(--bg-2);
  border: 1px solid #232847;
  border-radius: 12px;
  padding: 20px;
}

.building {
  display: flex;
  background: var(--shaft);
  overflow-x: auto;
  border: 1px solid #232847;
  border-radius: 8px;
  align-items: stretch;
  gap: 8px;
  width: max-content;
  max-width: 100%;
  padding: 10px;
}

.floors-column {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  width: 130px;
}

.floor-row {
  height: var(--floor-height, 60px);
  display: flex;
  border-bottom: 1px dashed #2a2f4d;
  justify-content: space-between;
  align-items:  center;
  padding: 0 8px;
}

.floor-row:first-child {
  border-top: 1px dashed #2a2f4d;
}

.floor-label {
  color: var(--muted);
  text-align: center;
  width: 28px;
  font-family: JetBrains Mono, ui-monospace, Menlo, monospace;
  font-size: 16px;
  font-weight: 700;
}

.hall-buttons {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.hall-btn {
  display: inline-flex;
  color: var(--muted);
  cursor: pointer;
  background: #20253f;
  border: 1px solid #2f355a;
  border-radius: 6px;
  justify-content: center;
  align-items:  center;
  width: 28px;
  height: 22px;
  padding: 0;
  transition: all .12s;
  font-size: 11px;
}

.hall-btn.placeholder {
  visibility: hidden;
  cursor: default;
  background: none;
  border: none;
}

.hall-btn.up:hover {
  color: var(--up);
  border-color: var(--up);
}

.hall-btn.down:hover {
  color: var(--down);
  border-color: var(--down);
}

.hall-btn.up.lit {
  color: var(--up);
  border-color: var(--up);
  background: #34d3992e;
  box-shadow: 0 0 8px #34d39980;
}

.hall-btn.down.lit {
  color: var(--down);
  border-color: var(--down);
  background: #f871712e;
  box-shadow: 0 0 8px #f8717180;
}

.shaft {
  position: relative;
  background: repeating-linear-gradient(to bottom, #ffffff05 0, #ffffff05 calc(var(--floor-height, 60px)  - 1px), #ffffff0f calc(var(--floor-height, 60px)  - 1px), #ffffff0f var(--floor-height, 60px)), #14182d;
  overflow: hidden;
  border: 1px solid #232847;
  border-radius: 6px;
  flex-shrink: 0;
  width: 72px;
}

.shaft-label {
  position: absolute;
  text-align: center;
  color: var(--muted);
  letter-spacing: .1em;
  z-index: 1;
  pointer-events: none;
  font-size: 10px;
  font-weight: 700;
  top: 4px;
  left: 0;
  right: 0;
}

.elevator {
  position: absolute;
  height: var(--floor-height, 60px);
  will-change: transform;
  bottom: 0;
  left: 4px;
  right: 4px;
}

.elevator-car {
  position: relative;
  background: var(--elev);
  overflow: hidden;
  display: flex;
  border-radius: 4px;
  justify-content: center;
  align-items:  center;
  width: 100%;
  height: 100%;
  transition: background .2s, box-shadow .2s;
  box-shadow: inset 0 0 0 1px #ffffff26, 0 4px 12px #4f8cf74d;
}

.elevator.moving-up .elevator-car {
  background: var(--elev-up);
  box-shadow: inset 0 0 0 1px #ffffff26, 0 4px 12px #4ade8066;
}

.elevator.moving-down .elevator-car {
  background: var(--elev-down);
  box-shadow: inset 0 0 0 1px #ffffff26, 0 4px 12px #fb718566;
}

.elevator.door-open .elevator-car {
  background: var(--elev-open);
  box-shadow: inset 0 0 0 1px #fff3, 0 4px 16px #facc1599;
}

.elevator-indicator {
  position: absolute;
  text-align: center;
  color: #fffffff2;
  text-shadow: 0 1px 2px #0006;
  z-index: 2;
  font-size: 12px;
  font-weight: 800;
  top: 4px;
  left: 0;
  right: 0;
}

.elevator-id {
  color: #fffffff2;
  text-shadow: 0 1px 2px #0006;
  z-index: 2;
  font-size: 18px;
  font-weight: 800;
}

.door {
  position: absolute;
  z-index: 1;
  background: linear-gradient(#00000059, #00000026);
  border: 0 solid #ffffff1a;
  width: 50%;
  transition: transform .4s cubic-bezier(.4,0,.2,1);
  top: 0;
  bottom: 0;
}

.door-left {
  border-right-width: 1px;
  left: 0;
}

.door-right {
  border-left-width: 1px;
  right: 0;
}

.elevator.door-open .door-left {
  transform: translateX(-100%);
}

.elevator.door-open .door-right {
  transform: translateX(100%);
}

.legend {
  display: flex;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 14px;
  font-size: 12px;
}

.legend .dot {
  display: inline-block;
  vertical-align: middle;
  border-radius: 50%;
  width: 10px;
  height: 10px;
  margin-right: 6px;
}

.legend .up {
  background: var(--up);
  box-shadow: 0 0 6px #34d39980;
}

.legend .down {
  background: var(--down);
  box-shadow: 0 0 6px #f8717180;
}

.legend .car {
  background: var(--car);
  box-shadow: 0 0 6px #60a5fa80;
}

.panels-section #elevator-panels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.elevator-panel {
  background: var(--panel);
  border: 1px solid #2a2f4d;
  border-radius: 10px;
  padding: 14px;
}

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

.panel-title {
  letter-spacing: .02em;
  font-size: 14px;
  font-weight: 700;
}

.panel-status {
  color: var(--muted);
  background: #14182d;
  border: 1px solid #2a2f4d;
  border-radius: 6px;
  padding: 4px 8px;
  font-family: JetBrains Mono, ui-monospace, Menlo, monospace;
  font-size: 11px;
}

.car-buttons {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.car-btn {
  color: var(--text);
  cursor: pointer;
  background: #14182d;
  border: 1px solid #2f355a;
  border-radius: 6px;
  height: 32px;
  transition: all .12s;
  font-family: JetBrains Mono, ui-monospace, Menlo, monospace;
  font-size: 13px;
  font-weight: 700;
}

.car-btn:hover {
  border-color: var(--car);
  color: var(--car);
}

.car-btn.lit {
  color: var(--car);
  border-color: var(--car);
  background: #60a5fa33;
  box-shadow: 0 0 8px #60a5fa66;
}

.car-btn.current {
  color: var(--accent);
  border-color: var(--accent);
  background: #facc1533;
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 1fr;
  }
}