client/src/css/pages/chat.scss

// Chat 页：共用左栏见 _chat-input-panel.scss；此处仅右栏续写栈与 Chat 专有控件
@use 'app-pages';
@use '../base/narrow-ios-form-font-tail' as ios-form-font;

@use 'chat-input-panel';
@use 'breakpoints' as *;
@use 'generation-status';
@use 'tool-calling-pending' as tcp;
@use 'lmf-readout' as lmf;

// 双实例：与下方 LMF 视觉上同一阅读区（同色、同字号行高、单一内边距，无分隔缝）
.chat-right-stack {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  width: 100%;
  box-sizing: border-box;
  background: var(--text-area-bg);
  color: var(--text-color);
  padding: 20px;
  overflow: visible;
  position: relative;
}

.chat-readout-body {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  overflow-y: auto;
  // 为右下角 Copy 按钮留白，避免挡住末行
  padding-bottom: 2.5rem;
}

.chat-right-stack .semantic-debug-info {
  background-color: var(--panel-bg);
}

.chat-segments-container {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
}

.chat-segment-input-text {
  @include lmf.lmf-readout-text;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--token-truncated-color);
  white-space: pre-wrap;
  word-break: break-word;
  font-family: inherit;

  &.tool-calling-pending-text {
    @include tcp.tool-calling-pending-text;
  }
}

.chat-segment-output {
  min-height: 0;
}

.chat-segment-output-host {
  min-height: 0;
}

.chat-segment-output-host .LMF {
  padding: 0;
  // 多段连续阅读区：覆盖全局 min-height:350px，高度随续写内容收缩
  min-height: 0;
}

.chat-streaming-preview {
  @include lmf.lmf-readout-text;
  flex: 0 0 auto;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  background-color: transparent;
}

:root[data-theme='dark'] {
  .chat-segment-input-text,
  .chat-streaming-preview {
    font-weight: 300;
  }
}

.chat-copy-fulltext-btn {
  position: absolute;
  right: 20px;
  bottom: 20px;
  z-index: 50;
  background-color: var(--text-area-bg);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
}

:root[data-theme='dark'] .chat-copy-fulltext-btn {
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
}

@media (max-width: $breakpoint-mobile) {
  .chat-right-stack {
    padding: 15px 12px;
  }

  .chat-copy-fulltext-btn {
    right: 12px;
    bottom: 15px;
  }

  .chat-segment-output-host .LMF.minimap-enabled {
    padding-right: calc(12px + var(--minimap-width));
  }
}

// 保持在本文件末尾；说明见 responsive.narrow-ios-form-font
@include ios-form-font.apply;