/* ===== 主内容区 ===== */
.main-content-wrap {
  flex: 1;
  min-height: 0;
  position: relative;
  overflow: hidden;
}

/* ===== 新工具调用展示（无框单行 + 状态圆圈 + 图标 + 展开折叠） ===== */

/* 整个列表折叠条：显示工具数 + 用时 */
.tc-list-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0;
  cursor: pointer;
  user-select: none;
  font-size: 0.75rem;
  color: var(--muted, #64748b);
}
.tc-list-toggle:hover {
  color: var(--text, #0f172a);
}
.tc-list-toggle-arrow {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 5px solid currentColor;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  flex-shrink: 0;
}
.tool-call-list-wrap--expanded .tc-list-toggle-arrow {
  transform: rotate(90deg);
}
.tc-list-toggle-body {
  display: none;
  flex-direction: column;
  gap: 0.15rem;
  margin-top: 0.15rem;
  max-height: none;
  overflow: hidden;
}
.tool-call-list-wrap--expanded .tc-list-toggle-body {
  display: flex;
  overflow-y: auto;
  max-height: 75vh;
}
/* flex 子项保持自然高度，避免工具记录多时被 flex-shrink 压缩导致内容不可见，
   由 .tc-list-toggle-body 自身滚动展示全部记录 */
.tc-list-toggle-body > * {
  flex-shrink: 0;
}

/* 单条工具调用行（无框） */
.tool-call-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0;
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--text, #334155);
}
.tool-call-row--running {
  color: var(--accent, #0e7490);
}
.tool-call-row--done {
  color: var(--text, #334155);
}

/* 状态圆圈（已弃用，由图标颜色代替） */

/* 展开箭头（无尾箭头，▶ 向右 / 展开 90deg 向下） */
.tc-arrow {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 5px solid currentColor;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  flex-shrink: 0;
  cursor: pointer;
  opacity: 0.6;
}
.tc-arrow:hover {
  opacity: 1;
}
.tool-call-row--expanded .tc-arrow {
  transform: rotate(90deg);
}

/* 工具图标 */
.tc-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.8;
}
.tc-icon:hover {
  transform: scale(1.1);
  opacity: 1;
}
.tc-icon:active {
  transform: scale(0.95);
}
.tc-icon--running {
  filter: brightness(0) saturate(100%) invert(42%) sepia(55%) saturate(700%) hue-rotate(152deg) brightness(95%) contrast(87%);
  opacity: 0.9;
}
.tc-icon--done {
  filter: brightness(0) saturate(100%) invert(55%) sepia(20%) saturate(400%) hue-rotate(152deg) brightness(90%);
  opacity: 0.55;
}

/* 工具名称 */
.tc-name {
  font-weight: 600;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 0.78rem;
  flex-shrink: 0;
}

/* 参数文本容器（横向滚动、无滚动条、渐变隐藏） */
.tc-args-scroll {
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex: 1;
  position: relative;
}
.tc-args-scroll::-webkit-scrollbar {
  display: none;
}
.tc-args-text {
  display: inline-block;
  white-space: nowrap;
  font-size: 0.72rem;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--muted, #64748b);
  background: rgba(148, 163, 184, 0.06);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

/* 无参数工具结果（居中显示在右侧） */
.tc-result-inline {
  flex: 1;
  text-align: center;
  font-size: 0.72rem;
  color: var(--text, #334155);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 单条工具调用耗时标签 */
.tc-duration {
  margin-left: auto;
  font-size: 0.68rem;
  color: rgba(100, 116, 139, 0.55);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 3.2em;
  text-align: right;
}
.tc-duration--running {
  color: var(--accent, #0e7490);
  opacity: 0.8;
}

/* 展开详情区（行下方）。折叠态用 display:none 而非 max-height:0：
   max-height:0 仍会对巨型 result_text 全量排版（大会话渲染/滚动的主要开销），
   display:none 完全跳过布局，仅在展开瞬间排版一次。 */
.tc-detail {
  margin: 0.15rem 0 0.3rem 1.4rem;
  padding: 0 0.45rem;
  display: none;
  flex-direction: column;
  gap: 0.3rem;
  max-height: none;
  overflow: hidden;
}
.tool-call-row--expanded + .tc-detail {
  display: flex;
  max-height: 45vh;
  overflow-y: auto;
  padding: 0.3rem 0.45rem;
}
/* .tc-detail 同为 flex column，内部子项保持自然高度，避免被压缩导致结果不可见 */
.tc-detail > * {
  flex-shrink: 0;
}
.tc-detail-text {
  max-height: 200px;
  overflow-y: auto;
  padding: 0.35rem 0.5rem;
  border-radius: 5px;
  background: rgba(148, 163, 184, 0.08);
  font-size: 0.75rem;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text, #475569);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.55;
}
.tc-detail-images {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0.15rem 0;
}
.tc-detail-images::-webkit-scrollbar {
  display: none;
}
.tc-detail-img {
  flex-shrink: 0;
  height: 120px;
  width: auto;
  max-width: 240px;
  object-fit: cover;
  border-radius: 6px;
  cursor: zoom-in;
  background: rgba(148, 163, 184, 0.08);
}
.tc-detail-files {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0.15rem 0;
}
.tc-detail-files::-webkit-scrollbar {
  display: none;
}

/* agentcall 嵌套容器（缩进 + 左侧竖线） */
.tc-agent-nest {
  margin-left: 1.4rem;
  padding-left: 0.6rem;
  border-left: 1px solid rgba(148, 163, 184, 0.25);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.tc-agent-nest-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: #6366f1;
  padding: 0.15rem 0;
}

/* ===== 子 Agent 返回值行（可折叠，图标 + 标签 + 展开内容） ===== */
.sub-reply-row {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.2rem 0;
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--text, #334155);
}
.sub-reply-row-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.65;
  cursor: pointer;
  transition: transform 0.15s, opacity 0.15s;
}
.sub-reply-row-icon:hover {
  transform: scale(1.1);
  opacity: 0.9;
}
.sub-reply-row-icon:active {
  transform: scale(0.95);
}
.sub-reply-row-label {
  font-weight: 600;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text, #475569);
  flex-shrink: 0;
  cursor: pointer;
}
.sub-reply-row-label:hover {
  color: #6366f1;
}
.sub-reply-row-detail {
  width: 100%;
  margin-top: 0.2rem;
  padding: 0.45rem 0.55rem;
  background: rgba(148, 163, 184, 0.06);
  border-left: 2px solid rgba(99, 102, 241, 0.35);
  border-radius: 0 5px 5px 0;
  font-size: 0.75rem;
  line-height: 1.55;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text, #475569);
  white-space: pre-wrap;
  word-break: break-word;
  display: none;
  overflow: hidden;
}
.sub-reply-row--expanded .sub-reply-row-detail {
  display: block;
  max-height: 400px;
  overflow-y: auto;
}

/* 思考记录（介于工具调用之间，伪流式） */
.tc-think-stream {
  margin: 0.1rem 0 0.1rem 1.4rem;
  padding: 0.25rem 0.45rem;
  border-left: 2px solid rgba(14, 116, 144, 0.28);
  background: rgba(14, 116, 144, 0.04);
  border-radius: 0 4px 4px 0;
  font-size: 0.7rem;
  color: var(--muted, #64748b);
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}
.tc-think-stream--streaming {
  opacity: 0.95;
}

/* ===== 反思（think）面板 ===== */
.think-indicator {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.1rem;
  margin-bottom: 0.25rem;
  padding: 0.3rem 0.45rem;
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.15s;
}
.think-indicator:hover {
  background: rgba(148, 163, 184, 0.08);
}

.think-indicator-svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.55;
  filter: grayscale(1);
}
.think-indicator:hover .think-indicator-svg {
  opacity: 0.8;
}

.think-indicator-arrow {
  font-size: 0.7rem;
  color: rgba(100, 116, 139, 0.45);
  margin-left: auto;
}

/* 思考块折叠 */
.think-collapsed .tc-think-stream {
  display: none;
}

/* ===== 思考行（独立可展开折叠，类似工具调用行） ===== */
.think-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0;
  font-size: 0.75rem;
  line-height: 1.4;
  flex-wrap: wrap;
}
.think-row--live {
  color: var(--accent, #0e7490);
}
.think-row--done {
  color: var(--text, #334155);
}

.think-row-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.7;
}
.think-row-icon:hover {
  transform: scale(1.1);
  opacity: 1;
}
.think-row-icon:active {
  transform: scale(0.95);
}
.think-row--live .think-row-icon {
  filter: brightness(0) saturate(100%) invert(42%) sepia(55%) saturate(700%) hue-rotate(152deg) brightness(95%) contrast(87%);
  opacity: 0.9;
}
.think-row--done .think-row-icon {
  filter: brightness(0) saturate(100%) invert(55%) sepia(20%) saturate(400%) hue-rotate(152deg) brightness(90%);
  opacity: 0.55;
}

.think-row-label {
  font-weight: 600;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 0.78rem;
  flex-shrink: 0;
}

.think-row-label--reflection {
  color: var(--accent, #4f8cff);
  opacity: 0.85;
}

.think-row-detail {
  width: 100%;
  margin-top: 0.2rem;
  padding: 0 0.5rem;
  background: rgba(148, 163, 184, 0.06);
  border-radius: 4px;
  font-size: 0.75rem;
  line-height: 1.55;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--muted, #64748b);
  white-space: pre-wrap;
  word-break: break-word;
  display: none;
  overflow: hidden;
}
.think-row--expanded .think-row-detail {
  display: block;
  max-height: 300px;
  padding: 0.35rem 0.5rem;
  overflow-y: auto;
}

.think-indicator-icon {
  font-size: 0.8rem;
}

.think-indicator-text {
  font-size: 0.72rem;
  color: rgba(100, 116, 139, 0.55);
  font-weight: 400;
  letter-spacing: 0.02em;
  transition: color 0.3s;
}

.think-indicator:hover .think-indicator-text {
  color: rgba(100, 116, 139, 0.75);
}

.think-list-wrap {
  display: none;
  margin-top: 0.15rem;
  max-height: 220px;
  overflow-y: auto;
  padding: 0.15rem 0;
  border-top: 1px solid rgba(148, 163, 184, 0.06);
}

.think-list-wrap--expanded {
  display: block;
}

/* 持久化的思维链列表（在最终消息中） */
.think-list-wrap--persistent {
  display: block;
  max-height: none;
  margin-top: 0.55rem;
  border-top: 1px solid rgba(148, 163, 184, 0.15);
}

.think-item {
  padding: 0.18rem 0.3rem;
  border-radius: 4px;
  font-size: 0.7rem;
  color: rgba(51, 65, 85, 0.48);
  line-height: 1.35;
  transition: color 0.3s;
}

.think-item:hover {
  background: rgba(148, 163, 184, 0.05);
}

.think-item-summary {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

.think-bullet {
  color: rgba(100, 116, 139, 0.40);
  font-size: 0.65rem;
}

.think-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.think-item-detail {
  margin-top: 0.3rem;
  padding: 0.35rem 0.45rem;
  background: rgba(148, 163, 184, 0.06);
  border-radius: 4px;
  font-size: 0.68rem;
  line-height: 1.5;
  color: rgba(51, 65, 85, 0.55);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 200px;
  overflow-y: auto;
  font-family: inherit;
}

/* ===== 图片浮窗预览 ===== */
.img-preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--overlay-bg, rgba(15, 23, 42, 0.65));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: imgPreviewFadeIn 0.2s ease;
  cursor: pointer;
}
@keyframes imgPreviewFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.img-preview-container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 92vw;
  max-height: 92vh;
  cursor: default;
  animation: imgPreviewZoomIn 0.22s ease;
}
@keyframes imgPreviewZoomIn {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}

.img-preview-img {
  display: block;
  max-width: 90vw;
  max-height: 78vh;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.45);
  background: var(--surface, #1a1a2e);
}

.img-preview-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--surface, rgba(20, 20, 40, 0.92));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border, rgba(148, 163, 184, 0.15));
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.img-preview-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  border-radius: 999px;
  border: none;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  font-family: inherit;
  white-space: nowrap;
}
.img-preview-btn:active {
  transform: scale(0.96);
}

.img-preview-btn--download {
  background: var(--accent, #0e7490);
  color: #fff;
}
.img-preview-btn--download:hover {
  filter: brightness(1.15);
}
.img-preview-btn--download img {
  width: 18px;
  height: 18px;
  filter: brightness(0) invert(1);
}

.img-preview-btn--edit {
  background: rgba(168, 85, 247, 0.85);
  color: #fff;
}
.img-preview-btn--edit:hover {
  filter: brightness(1.15);
  background: rgba(168, 85, 247, 1);
}

.img-preview-btn--close {
  background: var(--surface-hover, rgba(255, 255, 255, 0.08));
  color: var(--text, #e2e8f0);
}
.img-preview-btn--close:hover {
  background: rgba(239, 68, 68, 0.25);
  color: #fca5a5;
}

/* ===== 文件下载弹窗 ===== */
.file-dl-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--overlay-bg, rgba(15, 23, 42, 0.5));
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fileDlFadeIn 0.15s ease;
}
@keyframes fileDlFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.file-dl-box {
  background: var(--surface, rgba(20, 20, 40, 0.96));
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 14px;
  border: 1px solid var(--border, rgba(148, 163, 184, 0.18));
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
  padding: 28px 28px 20px;
  min-width: 340px;
  max-width: 440px;
  text-align: center;
  animation: fileDlSlideIn 0.18s ease;
}
@keyframes fileDlSlideIn {
  from { opacity: 0; transform: translateY(-10px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.file-dl-icon {
  font-size: 2.4rem;
  margin-bottom: 8px;
  line-height: 1;
}

.file-dl-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text, #e2e8f0);
  margin-bottom: 4px;
  word-break: break-all;
}

.file-dl-meta {
  font-size: 0.78rem;
  color: var(--muted, #94a3b8);
  margin-bottom: 20px;
}

.file-dl-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
}

/* ===== 文件下载链接 ===== */
.tool-call-file-link {
  display: inline-block;
  padding: 4px 10px;
  margin-top: 4px;
  font-size: 0.72rem;
  color: var(--accent, #0e7490);
  text-decoration: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.tool-call-file-link:hover {
  background: color-mix(in srgb, var(--accent, #0e7490) 15%, transparent);
  text-decoration: underline;
}

/* ===== 三点加载动画（Agent 运行中，首次工具调用或回复后消失） ===== */
.typing-dots {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 0.3rem 0.5rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--muted, #94a3b8);
  letter-spacing: 1px;
}
.typing-dots span {
  animation: typingDotBlink 1.4s infinite ease-in-out both;
}
.typing-dots span:nth-child(1) { animation-delay: 0s; }
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingDotBlink {
  0%, 80%, 100% { opacity: 0.15; }
  40% { opacity: 1; }
}