/* ===== 群聊消息专用样式（优化气泡宽度与缩进，时间戳右下角） ===== */

/* 容器 */
#chatMessages.group-chat-messages {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.5rem 1.5rem;
}

/* 单条消息 */
#chatMessages .group-message {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 80%;
  margin-bottom: 0.25rem;
  padding: 0;
}

#chatMessages .group-message.own {
  align-self: flex-end;
  align-items: flex-end;
  padding: 0;
}

/* 头像 + 名称（微信式结构：头像与「昵称+气泡」列并排，
   列容器 .group-message-main 的排布由 JS 内联样式控制） */
#chatMessages .group-message .avatar {
  width: 32px !important;
  height: 32px !important;
  border-radius: 50% !important;
  object-fit: cover;
  background: var(--color-border);
  flex-shrink: 0;
  border: 1px solid var(--color-border-light);
}

#chatMessages .group-message .sender-name {
  font-size: 0.75rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 120px;
}

/* 消息气泡 */
#chatMessages .group-message-bubble {
  background: var(--color-bg-primary);
  padding: 0.4rem 0.7rem 0.2rem 0.7rem;
  border-radius: var(--radius-lg);
  border-bottom-left-radius: var(--radius-xs);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  word-wrap: break-word;
  max-width: 100%;
  display: flex;
  flex-direction: column;
}

/* ★★★ 正文：继承父级字号 ★★★ */
#chatMessages .group-message-bubble .content {
  font-size: inherit;
  line-height: 1.5;
  word-break: break-word;
}

/* ★★★ mentions 标签：与内容同行，高亮显示 ★★★ */
#chatMessages .mentions {
  display: inline;
  font-size: inherit;
  color: var(--color-primary);
  font-weight: 600;
  margin-right: 0.2rem;
}

/* 时间戳 */
#chatMessages .group-message-bubble .timestamp {
  font-size: 0.55rem;
  color: var(--color-text-muted);
  margin-top: 0.1rem;
  text-align: right;
}

/* 自己的消息 */
#chatMessages .group-message.own .group-message-bubble {
  background: var(--color-primary-gradient);
  color: #fff;
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-xs);
  border-color: var(--color-primary);
}

#chatMessages .group-message.own .group-message-bubble .timestamp {
  color: rgba(255, 255, 255, 0.7);
}

/* 空状态 */
#chatMessages .empty-msg {
  text-align: center;
  color: var(--color-text-muted);
  padding: 2rem;
}

/* ===== 移动端适配 ===== */
@media (max-width: 768px) {
  #chatMessages.group-chat-messages {
    padding: 0.5rem 0.75rem;
  }

  #chatMessages .group-message {
    max-width: 88%;
    padding: 0;
  }
  #chatMessages .group-message.own {
    padding: 0;
  }

  #chatMessages .group-message .avatar {
    width: 28px !important;
    height: 28px !important;
  }

  #chatMessages .group-message .sender-name {
    font-size: 0.65rem;
    max-width: 80px;
  }

  #chatMessages .group-message-bubble {
    padding: 0.3rem 0.5rem 0.15rem 0.5rem;
  }

  #chatMessages .group-message-bubble .content {
    font-size: inherit;
  }

  #chatMessages .group-message-bubble .timestamp {
    font-size: 0.5rem;
    margin-top: 0.05rem;
  }
}

@media (max-width: 480px) {
  #chatMessages.group-chat-messages {
    padding: 0.25rem 0.5rem;
  }

  #chatMessages .group-message {
    max-width: 94%;
    padding: 0;
  }
  #chatMessages .group-message.own {
    padding: 0;
  }

  #chatMessages .group-message .avatar {
    width: 24px !important;
    height: 24px !important;
  }

  #chatMessages .group-message .sender-name {
    font-size: 0.55rem;
    max-width: 60px;
  }

  #chatMessages .group-message-bubble {
    padding: 0.2rem 0.4rem 0.1rem 0.4rem;
  }

  #chatMessages .group-message-bubble .content {
    font-size: inherit;
  }

  #chatMessages .group-message-bubble .timestamp {
    font-size: 0.45rem;
    margin-top: 0.05rem;
  }
}

/* ===== 提及选择器 ===== */
.mention-picker {
  position: fixed;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 150px;
  overflow-y: auto;
  z-index: 200;
  padding: 4px 0;
  min-width: 150px;
}
.mention-picker ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.mention-picker li {
  padding: 6px 12px;
  cursor: pointer;
  transition: background 0.15s;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}
.mention-picker li:hover {
  background: var(--color-bg-secondary);
}

@media (max-width: 768px) {
  .mention-picker {
    max-height: 120px;
    min-width: 120px;
  }
  .mention-picker li {
    padding: 8px 12px;
    font-size: var(--font-size-xs);
  }
}