/* styles.css */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  justify-content: center;
  align-items:  center;
  min-height: 100vh;
  padding: 20px;
  font-family: Segoe UI, Tahoma, Geneva, Verdana, sans-serif;
}

.container {
  background: #ffffff0d;
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 20px 60px #0000004d;
}

h1 {
  color: #fff;
  text-align: center;
  text-shadow: 0 2px 10px #0096ff80;
  margin-bottom: 30px;
  font-size: 2rem;
}

.building {
  display: flex;
  background: #0f0f23;
  border: 2px solid #2a2a4a;
  border-radius: 15px;
  gap: 20px;
  padding: 20px;
}

.floors-container {
  display: flex;
  flex-direction: column-reverse;
  gap: 5px;
  min-width: 280px;
}

.floor {
  display: flex;
  background: linear-gradient(135deg, #2a2a4a 0%, #1a1a3a 100%);
  border: 1px solid #3a3a5a;
  border-radius: 10px;
  justify-content: space-between;
  align-items:  center;
  min-height: 70px;
  padding: 12px 15px;
}

.floor-number {
  color: #8892b0;
  min-width: 30px;
  font-size: 1.1rem;
  font-weight: bold;
}

.floor-buttons {
  display: flex;
  gap: 8px;
}

.floor-btn {
  cursor: pointer;
  display: flex;
  border: none;
  border-radius: 10px;
  justify-content: center;
  align-items:  center;
  width: 45px;
  height: 45px;
  transition: all .2s;
  font-size: 1rem;
  font-weight: bold;
}

.floor-btn.up {
  color: #064e3b;
  background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
}

.floor-btn.up:hover {
  transform: scale(1.1);
  box-shadow: 0 5px 20px #4ade8066;
}

.floor-btn.up:active, .floor-btn.up.active {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  box-shadow: inset 0 2px 4px #0003;
}

.floor-btn.down {
  color: #7f1d1d;
  background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
}

.floor-btn.down:hover {
  transform: scale(1.1);
  box-shadow: 0 5px 20px #f8717166;
}

.floor-btn.down:active, .floor-btn.down.active {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  box-shadow: inset 0 2px 4px #0003;
}

.floor-btn:disabled {
  opacity: .3;
  cursor: not-allowed;
  transform: none !important;
}

.elevators-container {
  display: flex;
  position: relative;
  flex-direction: column-reverse;
  gap: 15px;
}

.elevator-shaft {
  position: relative;
  overflow: hidden;
  background: #1a1a3a;
  border: 2px solid #3a3a5a;
  border-radius: 10px;
  width: 100px;
  height: 770px;
}

.elevator {
  position: absolute;
  display: flex;
  background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
  border: 2px solid #93c5fd;
  border-radius: 8px;
  flex-direction: column;
  justify-content: center;
  align-items:  center;
  width: 80px;
  height: 70px;
  transition: bottom .3s ease-in-out;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 5px 20px #3b82f666;
}

.elevator.moving-up {
  background: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 100%);
  border-color: #c4b5fd;
  box-shadow: 0 5px 20px #8b5cf666;
}

.elevator.moving-down {
  background: linear-gradient(135deg, #fb923c 0%, #f97316 100%);
  border-color: #fdba74;
  box-shadow: 0 5px 20px #f9731666;
}

.elevator-number {
  color: #fff;
  text-shadow: 0 1px 3px #0000004d;
  font-size: 1.2rem;
  font-weight: bold;
}

.elevator-doors {
  display: flex;
  gap: 3px;
  margin-top: 5px;
}

.door {
  background: linear-gradient(#1e40af 0%, #1e3a8a 100%);
  border-radius: 2px;
  width: 30px;
  height: 25px;
}

.elevator-buttons {
  position: absolute;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  background: #1a1a3a;
  border: 1px solid #3a3a5a;
  border-radius: 8px;
  gap: 4px;
  padding: 10px;
  top: 10px;
  right: -120px;
}

.elevator-btn {
  cursor: pointer;
  color: #8892b0;
  background: #2a2a4a;
  border: none;
  border-radius: 5px;
  width: 28px;
  height: 28px;
  transition: all .2s;
  font-size: .75rem;
  font-weight: bold;
}

.elevator-btn:hover {
  color: #fff;
  background: #3a3a5a;
}

.elevator-btn.lit {
  color: #78350f;
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  box-shadow: 0 2px 8px #fbbf2466;
}

.controls {
  margin-top: 20px;
}

.info-panel {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
}

.info-item {
  display: flex;
  background: #ffffff1a;
  border-radius: 8px;
  gap: 10px;
  padding: 10px 20px;
}

.info-item .label {
  color: #8892b0;
  font-weight: 600;
}

.info-item .value {
  color: #60a5fa;
  font-weight: bold;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }

  50% {
    opacity: .6;
  }
}

.floor-btn.active {
  animation: pulse .5s ease-in-out infinite;
}