/* styles.css */
:root {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --info-color: #007bff;
  --warning-color: #ffc107;
  --light-bg: #f8f9fa;
  --dark-bg: #343a40;
  --border-color: #dee2e6;
  --text-primary: #495057;
  --text-secondary: #6c757d;
  --white: #fff;
  --shadow: 0 4px 6px #0000001a;
  --shadow-lg: 0 2px 10px #0000001a;
  --transition: all .2s ease;
  --border-radius: 10px;
  --border-radius-sm: 8px;
  --border-radius-xs: 5px;
}

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

body {
  color: var(--text-primary);
  background-color: #f5f5f5;
  padding: 20px;
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
}

.header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
  padding: 15px 25px;
}

.header h1 {
  margin-bottom: 5px;
  font-size: 1.5rem;
  font-weight: 600;
}

.header .info {
  opacity: .9;
  font-size: .9rem;
}

.simulator-container {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.building-section, .elevators-section {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  background: #fff;
  padding: 20px;
}

.building-section {
  flex: 1;
  min-width: 300px;
}

.elevators-section {
  flex: 2;
  min-width: 400px;
}

.building-section h2, .elevators-section h2 {
  color: #333;
  border-bottom: 2px solid var(--primary-color);
  margin-bottom: 15px;
  padding-bottom: 10px;
  font-size: 1.2rem;
}

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

.floor {
  display: flex;
  background: var(--light-bg);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  justify-content: space-between;
  align-items:  center;
  padding: 10px 15px;
}

.floor:hover {
  background: #e9ecef;
}

.floor-number {
  color: var(--text-primary);
  text-align: center;
  min-width: 40px;
  font-size: 1.5rem;
  font-weight: bold;
}

.floor-buttons {
  display: flex;
  gap: 10px;
}

.floor-btn {
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  color: #fff;
  border: none;
  justify-content: center;
  align-items:  center;
  width: 45px;
  height: 45px;
  font-size: 1.2rem;
  font-weight: bold;
  box-shadow: 0 2px 4px #0000001a;
}

.floor-btn.up {
  background: var(--success-color);
}

.floor-btn.up:hover {
  background: #218838;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px #28a7454d;
}

.floor-btn.up:active, .floor-btn.up.active {
  background: #1e7e34;
  transform: translateY(0);
  box-shadow: inset 0 2px 4px #0003;
}

.floor-btn.down {
  background: var(--danger-color);
}

.floor-btn.down:hover {
  background: #c82333;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px #dc35454d;
}

.floor-btn.down:active, .floor-btn.down.active {
  background: #bd2130;
  transform: translateY(0);
  box-shadow: inset 0 2px 4px #0003;
}

.floor-btn:disabled {
  cursor: not-allowed;
  box-shadow: none;
  background: #adb5bd;
  transform: none;
}

.floor-btn:disabled:hover {
  box-shadow: none;
  transform: none;
}

.elevator-display {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 200px;
}

.elevator-indicator {
  display: flex;
  background: var(--light-bg);
  border-radius: var(--border-radius-xs);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  transition: var(--transition);
  justify-content: center;
  align-items:  center;
  width: 35px;
  height: 35px;
  font-size: .9rem;
  font-weight: bold;
}

.elevator-indicator.moving {
  background: var(--success-color);
  color: #fff;
  border-color: #1e7e34;
  box-shadow: 0 0 8px #28a74566;
}

.elevator-indicator.selected {
  background: var(--info-color);
  color: #fff;
  border-color: #0056b3;
  box-shadow: 0 0 8px #007bff66;
}

.elevators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.elevator {
  background: var(--light-bg);
  border-radius: var(--border-radius);
  border: 2px solid var(--border-color);
  transition: var(--transition);
  padding: 15px;
}

.elevator:hover {
  border-color: var(--primary-color);
  box-shadow: 0 4px 12px #667eea26;
}

.elevator-header {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  justify-content: space-between;
  align-items:  center;
  margin-bottom: 15px;
  padding-bottom: 10px;
}

.elevator-title {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: bold;
}

.elevator-status {
  transition: var(--transition);
  border-radius: 20px;
  padding: 5px 12px;
  font-size: .8rem;
  font-weight: bold;
}

.elevator-status.idle {
  background: var(--light-bg);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.elevator-status.moving {
  background: var(--success-color);
  color: #fff;
  box-shadow: 0 2px 8px #28a7454d;
}

.elevator-visual {
  border-radius: var(--border-radius-sm);
  position: relative;
  overflow: hidden;
  background: #dee2e6;
  border: 3px solid #adb5bd;
  height: 120px;
  margin-bottom: 15px;
}

.elevator-shaft {
  position: absolute;
  border-radius: var(--border-radius-xs) var(--border-radius-xs) 0 0;
  background: #6c757d;
  border: 2px solid #5a6268;
  width: 60px;
  transition: height .3s;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.elevator-car {
  position: absolute;
  background: linear-gradient(180deg, var(--warning-color) 0%, #e0a800 100%);
  border-radius: var(--border-radius-xs) var(--border-radius-xs) 0 0;
  display: flex;
  color: #333;
  border: 2px solid #d39e00;
  justify-content: center;
  align-items:  center;
  width: 50px;
  height: 40px;
  transition: bottom .5s, background .3s;
  font-weight: bold;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 -2px 5px #0003;
}

.elevator-car.moving {
  background: linear-gradient(180deg, var(--success-color) 0%, #1e7e34 100%);
  color: #fff;
  border-color: #1e7e34;
  box-shadow: 0 -2px 10px #28a74566;
}

.floor-markers {
  position: absolute;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 5px 0;
  top: 0;
  bottom: 0;
  right: 10px;
}

.floor-marker {
  color: var(--text-secondary);
  font-size: .7rem;
  font-weight: 500;
}

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

.elevator-btn {
  aspect-ratio: 1;
  border-radius: var(--border-radius-xs);
  cursor: pointer;
  transition: var(--transition);
  background: var(--light-bg);
  color: var(--text-primary);
  border: none;
  font-size: 1rem;
  font-weight: bold;
  box-shadow: 0 1px 3px #0000001a;
}

.elevator-btn:hover {
  background: #dee2e6;
  transform: scale(1.05);
  box-shadow: 0 2px 6px #00000026;
}

.elevator-btn:active, .elevator-btn.selected {
  background: var(--info-color);
  color: #fff;
  transform: scale(.95);
  box-shadow: inset 0 2px 4px #0003, 0 0 8px #007bff4d;
}

.footer {
  text-align: center;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  max-width: 1200px;
  margin-top: 20px;
  margin-left: auto;
  margin-right: auto;
  padding: 15px;
  font-size: .9rem;
}

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

  .building-section, .elevators-section {
    flex: 1;
    width: 100%;
  }

  .elevators-grid {
    grid-template-columns: 1fr;
  }

  .floor {
    flex-wrap: wrap;
    gap: 10px;
  }

  .floor-buttons {
    order: 2;
  }

  .floor-number {
    order: 1;
  }

  .elevator-display {
    order: 3;
    justify-content: flex-end;
    width: 100%;
    max-width: none;
  }
}

@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  .header {
    padding: 12px 15px;
  }

  .header h1 {
    font-size: 1.2rem;
  }

  .building-section, .elevators-section {
    padding: 15px;
  }

  .floor-btn {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .elevator-visual {
    height: 100px;
  }

  .elevator-buttons {
    grid-template-columns: repeat(5, 1fr);
    gap: 3px;
  }

  .elevator-btn {
    font-size: .9rem;
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 #28a74566;
  }

  70% {
    box-shadow: 0 0 0 10px #28a74500;
  }

  100% {
    box-shadow: 0 0 #28a74500;
  }
}

.elevator-indicator.moving {
  animation: pulse 1.5s infinite;
}

.direction-indicator {
  display: inline-flex;
  transition: var(--transition);
  justify-content: center;
  align-items:  center;
  width: 20px;
  height: 20px;
}

.direction-indicator.up {
  color: var(--success-color);
}

.direction-indicator.down {
  color: var(--danger-color);
}

.loading {
  opacity: .6;
  pointer-events: none;
}

[data-tooltip] {
  position: relative;
}

[data-tooltip]:after {
  content: attr(data-tooltip);
  position: absolute;
  background: var(--dark-bg);
  color: #fff;
  border-radius: var(--border-radius-xs);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 100;
  padding: 5px 10px;
  font-size: .8rem;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
}

[data-tooltip]:hover:after {
  opacity: 1;
  visibility: visible;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--light-bg);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

button:focus, .floor-btn:focus, .elevator-btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

button:focus:not(:focus-visible) {
  outline: none;
}

.floor-btn:focus:not(:focus-visible) {
  outline: none;
}

.elevator-btn:focus:not(:focus-visible) {
  outline: none;
}

button:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.floor-btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.elevator-btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}