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

body {
  font-family: 'Arial', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #333;
}

#app {
  width: 100%;
  max-width: 800px;
  padding: 20px;
}

.screen {
  display: none;
  background: white;
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.screen.active {
  display: block;
}

h1 {
  text-align: center;
  color: #4a5568;
  margin-bottom: 30px;
  font-size: 2.5em;
}

.lobby-controls {
  text-align: center;
  margin-bottom: 30px;
}

.input-group {
  margin: 15px 0;
}

.input-group input {
  padding: 12px 20px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 16px;
  width: 250px;
  margin: 5px;
}

.input-group input:focus {
  outline: none;
  border-color: #667eea;
}

button {
  background: #667eea;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  margin: 5px;
  transition: background 0.3s;
}

button:hover {
  background: #5a67d8;
}

button:disabled {
  background: #a0aec0;
  cursor: not-allowed;
}

.host-controls {
  margin: 20px 0;
}

#host-info {
  background: #f7fafc;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
  text-align: center;
}

#my-peer-id {
  font-family: monospace;
  background: #edf2f7;
  padding: 5px 10px;
  border-radius: 4px;
  font-weight: bold;
}

#player-list {
  margin-top: 20px;
}

#player-list h3 {
  margin-bottom: 15px;
  color: #4a5568;
}

#players {
  list-style: none;
  background: #f7fafc;
  border-radius: 8px;
  padding: 15px;
}

#players li {
  padding: 8px 12px;
  margin: 5px 0;
  background: white;
  border-radius: 6px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#players li.host {
  background: #fed7d7;
  border-left: 4px solid #f56565;
}

#players li.current-turn {
  background: #c6f6d5;
  border-left: 4px solid #48bb78;
}

/* Game Board Styles */
#game-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  padding: 15px;
  background: #f7fafc;
  border-radius: 8px;
}

#scores-display {
  flex: 1;
}

#scores-display h3 {
  margin: 0 0 10px 0;
  color: #4a5568;
  font-size: 16px;
}

#scores-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.score-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: white;
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.player-color {
  font-size: 16px;
  font-weight: bold;
}

.player-color.red {
  color: #c53030;
}

.player-color.yellow {
  color: #ed8936;
}

.player-color.blue {
  color: #3182ce;
}

.player-color.green {
  color: #38a169;
}

.player-name {
  flex: 1;
  font-weight: 500;
}

.player-score {
  font-weight: bold;
  color: #667eea;
  background: #edf2f7;
  padding: 2px 8px;
  border-radius: 4px;
  min-width: 24px;
  text-align: center;
}

#game-board {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  background: #2d3748;
  padding: 20px;
  border-radius: 15px;
  margin: 20px 0;
  box-shadow: inset 0 4px 8px rgba(0, 0, 0, 0.3);
  max-width: 420px;
  margin: 20px auto;
}

.cell {
  width: 60px;
  height: 60px;
  background: #1a202c;
  border-radius: 50%;
  border: 3px solid #4a5568;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.cell:hover {
  border-color: #667eea;
  transform: scale(1.05);
}

.cell.disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.cell.red {
  background: radial-gradient(circle, #f56565 0%, #c53030 100%);
  border-color: #c53030;
  box-shadow: 0 0 15px rgba(245, 101, 101, 0.5);
}

.cell.yellow {
  background: radial-gradient(circle, #fbd38d 0%, #ed8936 100%);
  border-color: #ed8936;
  box-shadow: 0 0 15px rgba(251, 211, 141, 0.5);
}

.cell.blue {
  background: radial-gradient(circle, #63b3ed 0%, #3182ce 100%);
  border-color: #3182ce;
  box-shadow: 0 0 15px rgba(99, 179, 237, 0.5);
}

.cell.green {
  background: radial-gradient(circle, #68d391 0%, #38a169 100%);
  border-color: #38a169;
  box-shadow: 0 0 15px rgba(104, 211, 145, 0.5);
}

.cell.winning {
  animation: winning-pulse 1s infinite;
}

@keyframes winning-pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.cell.drop-animation {
  animation: drop 0.5s ease-out;
}

@keyframes drop {
  0% {
    transform: translateY(-300px);
  }
  60% {
    transform: translateY(10px);
  }
  80% {
    transform: translateY(-5px);
  }
  100% {
    transform: translateY(0);
  }
}

#game-status {
  text-align: center;
  font-size: 18px;
  font-weight: bold;
  margin: 20px 0;
  min-height: 25px;
}

#game-status.winner {
  color: #48bb78;
  font-size: 24px;
}

#game-status.draw {
  color: #ed8936;
  font-size: 24px;
}

#game-controls {
  text-align: center;
  margin-top: 20px;
}

#replay-btn {
  background: #48bb78;
  margin-right: 10px;
}

#replay-btn:hover {
  background: #38a169;
}

#leave-game-btn {
  background: #e53e3e;
}

#leave-game-btn:hover {
  background: #c53030;
}

#connection-status {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 10px 15px;
  border-radius: 6px;
  font-weight: bold;
  opacity: 0;
  transition: opacity 0.3s;
}

#connection-status.connected {
  background: #c6f6d5;
  color: #2f855a;
  opacity: 1;
}

#connection-status.disconnected {
  background: #fed7d7;
  color: #c53030;
  opacity: 1;
}

#connection-status.connecting {
  background: #fef5e7;
  color: #c05621;
  opacity: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
  #app {
    padding: 10px;
  }

  .screen {
    padding: 20px;
  }

  h1 {
    font-size: 2em;
  }

  .cell {
    width: 45px;
    height: 45px;
  }

  #game-board {
    gap: 6px;
    padding: 15px;
  }

  .input-group input {
    width: 200px;
  }
}