#ai-assistant-container {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 9999;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

#ai-assistant-toggle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: #1890ff;
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

#ai-assistant-toggle:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

#ai-assistant-panel {
  position: absolute;
  bottom: 60px;
  right: 0;
  width: 350px;
  height: 450px;
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0);
  transform-origin: bottom right;
  transition: transform 0.3s ease;
  opacity: 0;
}

#ai-assistant-panel.active {
  transform: scale(1);
  opacity: 1;
}

#ai-assistant-header {
  padding: 12px 15px;
  background-color: #1890ff;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#ai-assistant-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
}

#ai-assistant-close {
  background: none;
  border: none;
  color: white;
  font-size: 20px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}

#ai-assistant-messages {
  flex: 1;
  overflow-y: auto;
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ai-assistant-message {
  display: flex;
  gap: 8px;
  max-width: 85%;
}

.user-message {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.assistant-message {
  align-self: flex-start;
}

.ai-assistant-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.ai-assistant-content {
  padding: 10px;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.4;
}

.user-message .ai-assistant-content {
  background-color: #1890ff;
  color: white;
}

.assistant-message .ai-assistant-content {
  background-color: #f0f2f5;
  color: #333;
}

#ai-assistant-input-container {
  padding: 10px;
  border-top: 1px solid #eee;
  display: flex;
  gap: 8px;
}

#ai-assistant-input {
  flex: 1;
  border: 1px solid #ddd;
  border-radius: 5px;
  padding: 8px;
  resize: none;
  font-family: inherit;
  font-size: 14px;
}

#ai-assistant-input:focus {
  outline: none;
  border-color: #1890ff;
}

#ai-assistant-send {
  background-color: #1890ff;
  color: white;
  border: none;
  border-radius: 5px;
  padding: 0 15px;
  cursor: pointer;
  font-size: 14px;
}

#ai-assistant-send:hover {
  background-color: #40a9ff;
}

.ai-assistant-loading {
  display: inline-block;
  position: relative;
}

.ai-assistant-loading:after {
  content: '...';
  animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
  0%, 20% { content: '.'; }
  40% { content: '..'; }
  60% { content: '...'; }
  80%, 100% { content: ''; }
}

/* 暗黑模式适配 */
@media (prefers-color-scheme: dark) {
  #ai-assistant-panel {
    background-color: #1f1f1f;
  }
  
  .assistant-message .ai-assistant-content {
    background-color: #2d2d2d;
    color: #e0e0e0;
  }
  
  #ai-assistant-input {
    background-color: #2d2d2d;
    color: #e0e0e0;
    border-color: #444;
  }
}