/* styles.css */
:root {
  --bg-color: #1a1a2e;
  --surface-color: #16213e;
  --surface-light: #1f3460;
  --accent-color: #e94560;
  --accent-glow: #e9456066;
  --success-color: #0f3460;
  --text-color: #eee;
  --text-dim: #8892b0;
  --elevator-color: #e94560;
  --shaft-bg: #0f0f23;
  --floor-line: #2a2a4a;
  --btn-bg: #2a2a4a;
  --btn-active: #e94560;
  --door-color: gold;
  --font-mono: "Courier New", Courier, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
  display: flex;
  flex-direction: column;
  align-items:  center;
  min-height: 100vh;
  padding: 20px;
  font-family: Segoe UI, system-ui, -apple-system, BlinkMacSystemFont, Roboto, Noto Sans, Ubuntu, Cantarell, Helvetica Neue, sans-serif;
}

h1 {
  color: var(--accent-color);
  text-shadow: 0 0 20px var(--accent-glow);
  letter-spacing: 2px;
  margin-bottom: 4px;
  font-size: 1.8rem;
}

.info-bar {
  color: var(--text-dim);
  font-size: .75rem;
  font-family: var(--font-mono);
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.simulator {
  display: flex;
  align-items:  flex-start;
  gap: 24px;
  width: 100%;
  max-width: 1200px;
}

.building-container {
  display: flex;
  background: var(--surface-color);
  border: 1px solid var(--floor-line);
  border-radius: 12px;
  flex: 1;
  gap: 0;
  padding: 16px;
  box-shadow: 0 8px 32px #0006;
}

#floors {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-right: 12px;
}

.floor {
  display: flex;
  border-bottom: 1px solid var(--floor-line);
  align-items:  center;
  gap: 8px;
  height: 52px;
  padding: 0 8px;
}

.floor:first-child {
  border-top: 1px solid var(--floor-line);
}

.floor-label {
  font-family: var(--font-mono);
  color: var(--text-dim);
  text-align: center;
  width: 28px;
  font-size: .85rem;
  font-weight: 700;
}

.floor-buttons {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hall-btn {
  border: 1px solid var(--floor-line);
  background: var(--btn-bg);
  color: var(--text-dim);
  cursor: pointer;
  display: flex;
  border-radius: 4px;
  justify-content: center;
  align-items:  center;
  width: 28px;
  height: 22px;
  transition: all .2s;
  font-size: .65rem;
}

.hall-btn:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  box-shadow: 0 0 8px var(--accent-glow);
}

.hall-btn.active {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
  box-shadow: 0 0 12px var(--accent-glow);
  animation: pulse-btn 1.5s ease-in-out infinite;
}

@keyframes pulse-btn {
  0%, 100% {
    box-shadow: 0 0 8px var(--accent-glow);
  }

  50% {
    box-shadow: 0 0 16px var(--accent-glow);
  }
}

#elevator-shafts {
  display: flex;
  gap: 8px;
}

.shaft {
  position: relative;
  display: flex;
  background: var(--shaft-bg);
  overflow: hidden;
  border: 1px solid var(--floor-line);
  border-radius: 6px;
  flex-direction: column;
  width: 60px;
}

.shaft-label {
  text-align: center;
  font-family: var(--font-mono);
  color: var(--accent-color);
  background: var(--surface-light);
  border-bottom: 1px solid var(--floor-line);
  padding: 4px 0;
  font-size: .7rem;
  font-weight: 700;
}

.shaft-cell {
  position: relative;
  border-bottom: 1px solid #ffffff0d;
  height: 52px;
  transition: background .3s;
}

.shaft-cell.destination {
  background: #e945601a;
}

.shaft-cell.destination:after {
  content: "•";
  position: absolute;
  color: var(--accent-color);
  font-size: 1rem;
  top: 50%;
  right: 4px;
  transform: translateY(-50%);
}

.shaft-cell.current {
  background: #e945600d;
}

.elevator-car {
  position: absolute;
  display: flex;
  cursor: pointer;
  z-index: 10;
  user-select: none;
  background: linear-gradient(135deg, #e94560, #c23152);
  border-radius: 4px;
  flex-direction: column;
  justify-content: center;
  align-items:  center;
  height: 46px;
  transition: bottom .5s cubic-bezier(.25,.46,.45,.94);
  bottom: 0;
  left: 3px;
  right: 3px;
  box-shadow: 0 2px 12px #e9456066;
}

.elevator-car:hover {
  box-shadow: 0 2px 20px #e9456099;
}

.elevator-car.door-open {
  animation: door-flash .4s ease;
  background: linear-gradient(135deg, gold, #f0c040);
  box-shadow: 0 2px 16px #ffd70080;
}

.elevator-car.door-open .car-id, .elevator-car.door-open .car-direction {
  color: #1a1a2e;
}

@keyframes door-flash {
  0% {
    transform: scaleX(1);
  }

  50% {
    transform: scaleX(.6);
  }

  100% {
    transform: scaleX(1);
  }
}

.elevator-car.moving {
  box-shadow: 0 4px 20px #e9456099;
}

.car-id {
  font-family: var(--font-mono);
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
}

.car-direction {
  color: #fffc;
  font-size: .55rem;
  line-height: 1;
}

.panel-container {
  background: var(--surface-color);
  border: 1px solid var(--floor-line);
  border-radius: 12px;
  flex-shrink: 0;
  width: 200px;
  padding: 16px;
  box-shadow: 0 8px 32px #0006;
}

.panel-container h3 {
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 2px;
  text-align: center;
  margin-bottom: 12px;
  font-size: .85rem;
}

.panel-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
}

.panel-tab {
  border: 1px solid var(--floor-line);
  background: var(--btn-bg);
  color: var(--text-dim);
  font-family: var(--font-mono);
  cursor: pointer;
  border-radius: 4px;
  flex: 1;
  padding: 6px 0;
  transition: all .2s;
  font-size: .75rem;
  font-weight: 700;
}

.panel-tab:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.panel-tab.active {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}

.panel-display {
  text-align: center;
  font-family: var(--font-mono);
  color: #0f0;
  border: 1px solid var(--floor-line);
  text-shadow: 0 0 10px #00ff0080;
  display: flex;
  background: #0a0a1a;
  border-radius: 8px;
  justify-content: center;
  align-items:  center;
  min-height: 64px;
  margin-bottom: 12px;
  padding: 12px;
  font-size: 2.5rem;
  font-weight: 700;
}

.panel-display.up:after {
  content: " ▲";
  color: #0f0;
  font-size: 1rem;
}

.panel-display.down:after {
  content: " ▼";
  color: #0f0;
  font-size: 1rem;
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.panel-btn {
  border: 1px solid var(--floor-line);
  background: var(--btn-bg);
  color: var(--text-color);
  font-family: var(--font-mono);
  cursor: pointer;
  border-radius: 6px;
  padding: 10px 0;
  transition: all .2s;
  font-size: 1rem;
  font-weight: 700;
}

.panel-btn:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  box-shadow: 0 0 8px var(--accent-glow);
}

.panel-btn.active {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
  box-shadow: 0 0 12px var(--accent-glow);
}

.panel-btn.current {
  color: #0f0;
  border-color: #0f0;
  box-shadow: 0 0 8px #00ff004d;
}

.status-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 16px;
}

.status-item {
  background: var(--surface-color);
  border: 1px solid var(--floor-line);
  font-family: var(--font-mono);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: .75rem;
}

.status-item .label {
  color: var(--text-dim);
  margin-right: 6px;
}

.status-item .value {
  color: var(--accent-color);
  font-weight: 700;
}

@media (max-width: 768px) {
  .simulator {
    flex-direction: column;
    align-items:  center;
  }

  .panel-container {
    width: 100%;
    max-width: 300px;
  }
}