/*
 * 鲸鲸 · 照《肥鱼悦聊》的界面重制
 * ---------------------------------------------------------------
 * 设计值直接取自那个 APK 的 assets/index.html：
 *   底 #f2f3f5 / 面板 #fff / 我方气泡 #0099ff / 对方气泡 #fff
 *   气泡圆角 12px、靠头像那一角收成 4px、头像 38px、顶栏 52px
 * 只覆盖样式，DOM 和逻辑不动。
 */

:root {
  --qq-bg: #f2f3f5;
  --qq-panel: #ffffff;
  --qq-text: #111111;
  --qq-sub: #8a8f99;
  --qq-me: #0099ff;
  --qq-me-text: #ffffff;
  --qq-bot: #ffffff;
  --qq-bot-text: #111111;
  --qq-line: #e6e8eb;
  --qq-veil: 0.72;
}

/* ===== 聊天区：底图 + 一层底色纱（和模板的 #bgLayer + #veil 等价） ===== */
.chat-screen {
  background-image:
    linear-gradient(rgba(242, 243, 245, var(--qq-veil)), rgba(242, 243, 245, var(--qq-veil))),
    url('/dist/chat-bg.jpg');
  background-size: cover, cover;
  background-position: center, center;
  background-repeat: no-repeat, no-repeat;
  background-attachment: scroll, fixed;
}
.message-list {
  background: transparent;
  padding: 12px 12px 8px;
}

/* ===== 顶栏：白底、一条细线、52 高 ===== */
.chat-header {
  background: var(--qq-panel);
  border-bottom: 1px solid var(--qq-line);
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.chat-title {
  font-weight: 600;
  font-size: 16px;
  color: var(--qq-text);
}
.connection-dot {
  width: 8px;
  height: 8px;
  box-shadow: none;
}

/* ===== 消息行 + 38px 圆头像 ===== */
.message {
  align-items: flex-start;
  gap: 8px;
  padding: 0;
  margin-bottom: 12px;
}
.message.user {
  justify-content: flex-end;
}
.message.assistant {
  flex-direction: row;
}

.message.assistant::before,
.message.user::after {
  content: '';
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  background-color: #dfe3e8;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}
.message.assistant::before {
  background-image: url('/dist/avatar-whale.png');
}
.message.user::after {
  background-image: url('/dist/avatar-user.png');
}

/* ===== 气泡 ===== */
.message .bubble {
  max-width: 74%;
  padding: 9px 12px;
  border-radius: 12px;
  border-top-right-radius: 4px;
  background: var(--qq-me);
  color: var(--qq-me-text);
  box-shadow: none;
  font-size: 15px;
  line-height: 1.5;
}

.message.assistant .assistant-text,
.message.assistant .text {
  max-width: 74%;
  padding: 9px 12px;
  border-radius: 12px;
  border-top-left-radius: 4px;
  background: var(--qq-bot);
  color: var(--qq-bot-text);
  box-shadow: none;
  font-size: 15px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

/* 图片消息 */
.message-images img {
  border-radius: 8px;
  box-shadow: none;
}

/* ===== 底部输入栏 ===== */
.composer {
  background: var(--qq-panel);
  border-top: 1px solid var(--qq-line);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.composer-input {
  border-radius: 18px;
  border: 1px solid var(--qq-line);
  background: #ffffff;
  padding: 10px 14px;
  box-shadow: none;
  /* iOS 在输入框字号 < 16px 时会强制放大页面，钉到 16px 就不会跳 */
  font-size: 16px;
  line-height: 1.4;
}
.composer-input:focus {
  outline: none;
  border-color: var(--qq-me);
  box-shadow: none;
}
.composer-submit button,
.composer-submit .primary-button,
.composer-actions button {
  border-radius: 18px;
  background: var(--qq-me);
  color: #ffffff;
  font-weight: 600;
  box-shadow: none;
}

/* ===== 空状态 ===== */
.chat-empty {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 12px;
  backdrop-filter: none;
  color: var(--qq-sub);
}

/* ===== 深色 ===== */
@media (prefers-color-scheme: dark) {
  .chat-screen {
    background-image:
      linear-gradient(rgba(17, 19, 21, 0.78), rgba(17, 19, 21, 0.78)),
      url('/dist/chat-bg.jpg');
  }
  .chat-header,
  .composer {
    background: #1b1e21;
    border-color: #2b3035;
  }
  .chat-title {
    color: #e8eaed;
  }
  .message .bubble {
    background: #0a84ff;
    color: #ffffff;
  }
  .message.assistant .assistant-text,
  .message.assistant .text {
    background: #23272b;
    color: #e8eaed;
  }
  .composer-input {
    background: #23272b;
    color: #e8eaed;
    border-color: #2b3035;
  }
  .chat-empty {
    background: rgba(35, 39, 43, 0.7);
    color: #8b939c;
  }
}