/* 全局样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: #f0f0f0;
  color: #333;
  padding: 0;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  width: 100%;
  min-height: 100%;
  overflow-x: hidden;
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
}

/* 确保页面内容不会溢出 */
body > * {
  box-sizing: border-box;
}

/* 开场淡入动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 顶部图片容器 */
.header-image {
  max-width: 600px;
  margin: 0 auto;
  padding: 0;
  overflow: hidden;
  border-radius: 12px 12px 0 0;
  position: relative;
  float: none;
}

.header-image img {
  width: 100%;
  height: auto;
  display: block;
  margin: 0;
  padding: 0;
  border: 0;
  /* 移除 vertical-align，因 display:block 无需垂直对齐 */
  float: none;
}

/* 聊天容器 */
.chat-container {
  max-width: 600px;
  margin: 0 auto;
  background-color: #fff;
  border-radius: 0 0 12px 12px;
  padding: 20px;
  min-height: calc(100vh - 200px);
  position: relative;
}

/* 步骤容器 */
.step {
  display: block;
}

/* 消息样式 */
.message {
  display: flex;
  margin-bottom: 15px;
  align-items: flex-start;
  opacity: 0;
  transform: translateY(10px);
  animation: messageAppear 0.3s ease forwards;
}

/* 消息出现动画 */
@keyframes messageAppear {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 助手消息 */
.message.assistant {
  justify-content: flex-start;
}

/* 用户消息 */
.message.user {
  justify-content: flex-end;
}

/* 头像样式 */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  overflow: hidden;
  margin-right: 10px;
  flex-shrink: 0;
}

.user-avatar {
  margin-right: 0;
  margin-left: 10px;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 消息气泡 */
.message-bubble {
  max-width: 70%;
  background-color: #f0f0f0;
  padding: 12px 16px;
  border-radius: 18px;
  position: relative;
  word-wrap: break-word;
  line-height: 1.5;
  transition: all 0.3s ease;
}

/* 高亮文字动画 */
.red, .green, .orange {
  display: inline-block;
  animation: highlightPulse 0.6s ease;
}

@keyframes highlightPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* 用户消息气泡 */
.message.user .message-bubble {
  background-color: #94d360;
  color: #333;
}

.user-bubble {
  background-color: #94d360 !important;
}

/* 高亮文字颜色 */
.red {
  color: #e64340;
  font-weight: bold;
}

.green {
  color: #07c160;
  font-weight: bold;
}

.orange {
  color: #fa8c16;
  font-weight: bold;
}

/* 选项按钮容器 */
.options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

/* 选项按钮 */
.option-btn {
  background-color: #94d360;
  color: #333;
  border: none;
  padding: 12px 20px;
  border-radius: 20px;
  font-size: 15px;
  cursor: pointer;
  flex: 0 0 calc(50% - 5px);
  transition: all 0.3s ease;
  text-align: center;
  /* 默认可见但添加入场动画效果 */
  opacity: 1;
  transform: scale(1);
  animation: buttonPop 0.5s ease forwards;
}

/* 按钮出现动画 */
@keyframes buttonAppear {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 按钮弹出动画（默认可见但有动画效果） */
@keyframes buttonPop {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.option-btn:hover {
  background-color: #82c34b;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(148, 211, 96, 0.3);
}

.option-btn:active {
  transform: scale(0.97);
}

.option-btn.full-width {
  flex: 0 0 100%;
}

/* 添加好友按钮容器 */
.add-friend-btn-container {
  margin: 30px 0;
  text-align: center;
}

/* 添加好友按钮 */
.add-friend-btn {
  background-color: #07c160;
  color: white;
  border: none;
  padding: 16px 40px;
  border-radius: 25px;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 8px rgba(7, 193, 96, 0.3);
  /* 默认可见但添加动画效果 */
  opacity: 1;
  transform: scale(1);
  animation: buttonPop 0.5s ease forwards, pulse 2s infinite 0.5s;
}

/* 按钮脉动动画 */
@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 4px 8px rgba(7, 193, 96, 0.3);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 8px 16px rgba(7, 193, 96, 0.4);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 4px 8px rgba(7, 193, 96, 0.3);
  }
}

.add-friend-btn:hover {
  background-color: #06a853;
  box-shadow: 0 8px 16px rgba(7, 193, 96, 0.4);
  transform: translateY(-2px);
}

.add-friend-btn:active {
  transform: scale(0.98) translateY(0);
}

/* 版权信息 */
.copyright {
  text-align: center;
  color: #999;
  font-size: 12px;
  margin-top: 40px;
}

/* 全屏提示 */
.fullscreen-tip {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 10px 16px;
  border-radius: 20px;
  font-size: 14px;
  z-index: 9999;
  backdrop-filter: blur(5px);
}

.esc {
  background-color: rgba(255, 255, 255, 0.2);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  margin: 0 2px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .chat-container {
    padding: 15px;
  }
  
  .message-bubble {
    max-width: 80%;
  }
  
  .option-btn {
    font-size: 14px;
    padding: 10px 16px;
  }
  
  .add-friend-btn {
    font-size: 16px;
    padding: 14px 30px;
  }
}

@media (max-width: 480px) {
  body {
    padding: 0;
  }
  
  .chat-container {
    border-radius: 0;
    padding: 10px;
  }
  
  .message-bubble {
    max-width: 85%;
    padding: 10px 14px;
  }
  
  .avatar {
    width: 36px;
    height: 36px;
  }
}