:root {
  --primary-color: #4a6fa5;
  --secondary-color: #6c8fc7;
  --background-color: #f5f7fa;
  --text-color: #2c3e50;
  --border-color: #e1e4e8;
  --shadow-color: rgba(0, 0, 0, 0.1);
  
  /* Room colors - 8 unique colors */
  --room1-bg: #e3f2fd;
  --room1-border: #90caf9;
  --room2-bg: #f3e5f5;
  --room2-border: #ce93d8;
  --room3-bg: #e8f5e9;
  --room3-border: #a5d6a7;
  --room4-bg: #fff3e0;
  --room4-border: #ffcc80;
  --room5-bg: #ffebee;
  --room5-border: #ef9a9a;
  --room6-bg: #e0f7fa;
  --room6-border: #80deea;
  --room7-bg: #f1f8e9;
  --room7-border: #c5e1a5;
  --room8-bg: #fce4ec;
  --room8-border: #f48fb1;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  padding: 15px;
  background-color: var(--background-color);
  color: var(--text-color);
  text-align: center;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

h1 {
  color: var(--primary-color);
  margin-bottom: 20px;
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  padding: 0 10px;
}

.rooms {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-top: 20px;
  padding: 0 10px;
}

.room {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: calc(100% - 30px);
  max-width: 400px;
  min-height: 120px;
  padding: 15px;
  box-shadow: 0 2px 4px var(--shadow-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#room1, #room2, #room3, #room4 {
  background: white;
  border-color: var(--border-color);
}

/* Add dynamic room color classes */
.room-color-1 {
  background: var(--room1-bg) !important;
  border-color: var(--room1-border) !important;
}
.room-color-2 {
  background: var(--room2-bg) !important;
  border-color: var(--room2-border) !important;
}
.room-color-3 {
  background: var(--room3-bg) !important;
  border-color: var(--room3-border) !important;
}
.room-color-4 {
  background: var(--room4-bg) !important;
  border-color: var(--room4-border) !important;
}
.room-color-5 {
  background: var(--room5-bg) !important;
  border-color: var(--room5-border) !important;
}
.room-color-6 {
  background: var(--room6-bg) !important;
  border-color: var(--room6-border) !important;
}
.room-color-7 {
  background: var(--room7-bg) !important;
  border-color: var(--room7-border) !important;
}
.room-color-8 {
  background: var(--room8-bg) !important;
  border-color: var(--room8-border) !important;
}

.room h3 {
  margin-top: 0;
  color: var(--primary-color);
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 8px;
  text-align: center;
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.room ul {
  list-style: none;
  padding: 0;
  margin: 8px 0;
}

.room li {
  padding: 8px;
  margin: 6px 0;
  background-color: rgba(255, 255, 255, 0.8);
  border-radius: 6px;
  transition: all 0.3s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  text-align: center;
  font-weight: 500;
  font-size: 0.95rem;
}

.room li:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.room-color-1 li:hover {
  background-color: var(--room1-border);
  color: white;
}
.room-color-2 li:hover {
  background-color: var(--room2-border);
  color: white;
}
.room-color-3 li:hover {
  background-color: var(--room3-border);
  color: white;
}
.room-color-4 li:hover {
  background-color: var(--room4-border);
  color: white;
}
.room-color-5 li:hover {
  background-color: var(--room5-border);
  color: white;
}
.room-color-6 li:hover {
  background-color: var(--room6-border);
  color: white;
}
.room-color-7 li:hover {
  background-color: var(--room7-border);
  color: white;
}
.room-color-8 li:hover {
  background-color: var(--room8-border);
  color: white;
}

.hidden {
  display: none;
}

input[type="text"],
input[type="number"] {
  width: 100%;
  max-width: 300px;
  padding: 12px;
  margin: 8px auto;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  transition: border-color 0.3s ease;
  -webkit-appearance: none;
  appearance: none;
}

input[type="text"]:focus,
input[type="number"]:focus {
  outline: none;
  border-color: var(--primary-color);
}

button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
  margin: 8px 0;
  width: 100%;
  max-width: 300px;
  -webkit-appearance: none;
  appearance: none;
  touch-action: manipulation;
}

button:hover {
  background-color: var(--secondary-color);
  transform: scale(1.02);
}

#input-section,
#setup-section {
  max-width: 400px;
  margin: 0 auto;
  padding: 20px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 2px 4px var(--shadow-color);
}

#assignment-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

#status {
  font-size: 1rem;
  color: var(--primary-color);
  margin: 15px 0;
  font-weight: 500;
  padding: 0 10px;
}

.setup-input {
  margin: 12px 0;
}

.setup-input label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
  color: var(--primary-color);
  font-size: 0.95rem;
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
  margin: 15px 0;
  padding: 0 10px;
}

#save-button {
  background-color: #4CAF50;
}

#save-button:hover {
  background-color: #45a049;
}

/* iPhone specific optimizations */
@supports (-webkit-touch-callout: none) {
  body {
    padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  }
  
  button {
    padding: 14px 20px;
  }
  
  .room {
    min-height: 100px;
  }
}

/* Landscape mode adjustments */
@media (orientation: landscape) {
  .rooms {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .room {
    width: calc(50% - 20px);
    min-width: 200px;
  }
}

/* Larger screens */
@media (min-width: 768px) {
  body {
    padding: 20px;
  }
  
  .action-buttons {
    flex-direction: row;
  }
  
  button {
    width: auto;
  }
  
  .room {
    width: calc(33.333% - 20px);
  }
}