.container {
  max-width: 800px;
  margin: 10px auto;
  text-align: center;
  padding: 20px;
}

h1, h2 {
  color: #333;
}

.hint {
  color: #666;
  font-style: italic;
  margin-bottom: 20px;
}

.game-area {
  position: relative;
  margin: 20px auto;
  width: 500px;
}

.emoji-grid {
  display: flex;
  justify-content: center;
  gap: 15px;
  padding: 15px;
  background-color: #f5f5f5;
  border-radius: 10px;
  margin-bottom: 20px;
}

.emoji {
  font-size: 50px;
  cursor: pointer;
  transition: transform 0.3s ease;
  padding: 10px;
  border-radius: 10px;
  background-color: white;
  user-select: none;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  -webkit-tap-highlight-color: transparent;
}

.emoji:hover {
  transform: scale(1.1);
  background-color: #e0e0e0;
}

.emoji:active {
  transform: scale(0.95);
}

.emoji.dragging {
  opacity: 0.5;
}

.popup {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.3);
  font-size: 24px;
  z-index: 1000;
  animation: popIn 0.3s ease-out;
}

.story-section {
  margin-top: 30px;
  padding: 20px;
  background-color: #f9f9f9;
  border-radius: 10px;
}

#story {
  font-size: 18px;
  line-height: 2;
  margin: 20px 0;
  text-align: left;
  padding: 0 20px;
}

.sentence {
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  position: relative;
  padding-right: 40px;
}

.drop-zone {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border: 3px dashed #ccc;
  border-radius: 10px;
  margin: 0 10px;
  transition: all 0.3s ease;
  font-size: 30px;
  vertical-align: middle;
}

.drop-zone.drag-over {
  background-color: #e3f2fd;
  border-color: #2196F3;
}

.drop-zone.correct {
  border-color: #4CAF50;
  background-color: #e8f5e9;
}

.drop-zone.incorrect {
  border-color: #f44336;
  background-color: #ffebee;
}

.button-group {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 20px;
}

.story-button, .check-button, .clear-button {
  padding: 12px 24px;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.story-button {
  background-color: #2196F3;
  color: white;
}

.check-button {
  background-color: #4CAF50;
  color: white;
}

.clear-button {
  background-color: #f44336;
  color: white;
}

.story-button:hover {
  background-color: #1976D2;
}

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

.clear-button:hover {
  background-color: #d32f2f;
}

.play-button {
  background-color: #2196F3;
  color: white;
  width: 30px;
  height: 30px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: background-color 0.3s;
  padding: 0;
  line-height: 1;
}

.play-button:hover {
  background-color: #1976D2;
}

.navigation {
  display: flex;
  justify-content: flex-end;
  margin-top: 20px;
  padding: 0 20px;
}

.nav-button {
  background-color: #2196F3;
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: 5px;
  font-size: 24px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.3s;
}

.nav-button:hover {
  background-color: #1976D2;
}

.next {
  margin-left: auto;
}

@keyframes popIn {
  from { transform: translate(-50%, -50%) scale(0); }
  to { transform: translate(-50%, -50%) scale(1); }
}

/* Prevent text selection */
.emoji, .button-group button, .play-button {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Prevent scrolling when dragging on mobile */
body {
  overscroll-behavior: none;
}

/* Mobile responsiveness */
@media (max-width: 600px) {
  .game-area {
    width: 100%;
  }

  .emoji-grid {
    flex-wrap: wrap;
  }

  .emoji {
    font-size: 40px;
    padding: 8px;
  }

  .drop-zone {
    width: 40px;
    height: 40px;
    font-size: 25px;
  }
}