/* =====================================================================
   Mermaid Renderer - 卡片主题
   - 图面板(.mermaid-view)固定浅色, 不随系统主题变
   - 工具栏/容器/代码区/主题菜单 随系统主题切换
   ===================================================================== */

/* ===== 容器(卡片) - 随主题 ===== */
.mermaid-container {
  margin: 10px 0;
  background: #1e293b;
  border-radius: 10px;
  overflow: hidden;
  max-width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #e0e0e0;
  font-size: 13px;
  line-height: 1.5;
}

[data-theme="light"] .mermaid-container {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.1);
  color: #1e293b;
}

/* ===== 工具栏 ===== */
.mermaid-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 10px;
  background: transparent;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  gap: 8px;
  min-height: 34px;
}

[data-theme="light"] .mermaid-toolbar {
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.mermaid-toolbar-left,
.mermaid-toolbar-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.mermaid-toolbar-right { gap: 3px; }

/* ===== 图类型小标签 ===== */
.mermaid-type-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  font-size: 10px;
  color: #8888a0;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

[data-theme="light"] .mermaid-type-tag {
  color: #7b8798;
  background: rgba(0, 0, 0, 0.04);
}

.mermaid-type-tag svg { opacity: 0.7; }

/* ===== 视图/代码 Tabs ===== */
.mermaid-tabs {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 6px;
  padding: 2px;
}

[data-theme="light"] .mermaid-tabs {
  background: rgba(0, 0, 0, 0.04);
}

.mermaid-tab {
  padding: 3px 10px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 11px;
  color: #8888a0;
  border-radius: 4px;
  transition: all 0.15s;
  font-weight: 500;
}

.mermaid-tab:hover { color: #c0c0d0; }

.mermaid-tab.active {
  color: #e0e0e0;
  background: rgba(255, 255, 255, 0.12);
  font-weight: 600;
}

[data-theme="light"] .mermaid-tab { color: #64748b; }
[data-theme="light"] .mermaid-tab:hover { color: #1e293b; }
[data-theme="light"] .mermaid-tab.active {
  color: #1e293b;
  background: rgba(0, 0, 0, 0.08);
}

/* ===== 工具栏按钮 ===== */
.mermaid-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 5px 8px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  color: #8888a0;
  border-radius: 6px;
  transition: all 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 1;
}

.mermaid-action.icon-only {
  width: 28px;
  height: 28px;
  padding: 0;
}

.mermaid-action:hover {
  color: #e0e0e0;
  background: rgba(255, 255, 255, 0.08);
}

.mermaid-action:active {
  background: rgba(255, 255, 255, 0.12);
}

.mermaid-action.success {
  color: #10b981;
  background: rgba(16, 185, 129, 0.12);
}

[data-theme="light"] .mermaid-action { color: #64748b; }
[data-theme="light"] .mermaid-action:hover { color: #1e293b; background: rgba(0, 0, 0, 0.05); }
[data-theme="light"] .mermaid-action:active { background: rgba(0, 0, 0, 0.08); }
[data-theme="light"] .mermaid-action.success { color: #059669; background: rgba(16, 185, 129, 0.1); }

.mermaid-action svg { flex-shrink: 0; }

/* 移动端 */
@media (max-width: 640px) {
  .mermaid-toolbar { padding: 5px 8px; gap: 6px; }
  .mermaid-type-tag { font-size: 9px; padding: 2px 6px; }
  .mermaid-tab { padding: 3px 8px; font-size: 10px; }
  .mermaid-action.icon-only { width: 26px; height: 26px; }
}

/* ===== 横向滚动容器 ===== */
.mermaid-scroll-wrapper {
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
  background: transparent !important;
}

.mermaid-scroll-wrapper::-webkit-scrollbar { height: 5px; }
.mermaid-scroll-wrapper::-webkit-scrollbar-track { background: transparent; }
.mermaid-scroll-wrapper::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}
.mermaid-scroll-wrapper::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.2); }

[data-theme="light"] .mermaid-scroll-wrapper::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, 0.1); }
[data-theme="light"] .mermaid-scroll-wrapper::-webkit-scrollbar-thumb:hover { background: rgba(0, 0, 0, 0.2); }

/* ===== 视图(图表)区域 - 固定浅色面板, mermaid 图显示其上, 不随主题变 ===== */
.mermaid-view {
  padding: 18px 14px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 70px;
  background: #f5f5f7 !important;
  text-align: center;
}

.mermaid-view pre {
  background: transparent !important;
  margin: 0 !important;
  padding: 0 !important;
  border-radius: 0 !important;
  text-align: center;
}

.mermaid-view pre.mermaid {
  display: inline-block;
  min-width: min-content;
  background: transparent !important;
}

.mermaid-view pre svg {
  max-width: 100%;
  height: auto !important;
  transition: transform 0.2s ease;
  transform-origin: center center;
  display: inline-block;
}

/* ===== 代码视图 - 随主题 ===== */
.mermaid-code {
  padding: 0;
  display: none;
}

.mermaid-code pre {
  background: #0f172a !important;
  border-radius: 0 !important;
  margin: 0 !important;
}

.mermaid-code pre code {
  color: #d0d0e0 !important;
  padding: 14px !important;
  font-weight: 500;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 12.5px;
  line-height: 1.6;
}

[data-theme="light"] .mermaid-code pre {
  background: #f1f5f9 !important;
}
[data-theme="light"] .mermaid-code pre code {
  color: #1e293b !important;
}

/* ===== 错误提示条 ===== */
.mermaid-error-tip {
  padding: 10px 14px;
  border: 1px dashed #ef4444;
  border-radius: 8px;
  background: rgba(239, 68, 68, 0.08);
  color: #fca5a5;
  font-size: 12px;
  margin: 12px;
  line-height: 1.6;
}

.mermaid-error-tip strong {
  color: #ef4444;
  font-weight: 600;
}

[data-theme="light"] .mermaid-error-tip {
  color: #b91c1c;
  background: rgba(239, 68, 68, 0.06);
}

/* ===== 全屏遮罩 - 固定浅色, 与图面板一致 ===== */
.mermaid-fullscreen-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #f5f5f7 !important;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  animation: mermaidFsIn 0.2s ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

@keyframes mermaidFsIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.mermaid-fullscreen-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.1);
  color: #1e293b;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  font-size: 18px;
  z-index: 10;
}

.mermaid-fullscreen-close:hover {
  background: rgba(0, 0, 0, 0.1);
  color: #0f172a;
}

.mermaid-fullscreen-toolbar {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 10px;
  padding: 4px 8px;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  z-index: 10;
}

.mermaid-fullscreen-toolbar .mermaid-action {
  color: #475569;
}
.mermaid-fullscreen-toolbar .mermaid-action:hover {
  color: #1e293b;
  background: rgba(0, 0, 0, 0.06);
}

.mermaid-fullscreen-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 80px 24px 24px;
  overflow: hidden;
  cursor: grab;
  user-select: none;
}

.mermaid-fullscreen-content:active { cursor: grabbing; }

.mermaid-fullscreen-content svg {
  max-width: 90%;
  max-height: 90%;
  transition: transform 0.15s ease;
  transform-origin: center center;
}

/* ===== 主题下拉菜单 - 随主题 ===== */
.mermaid-theme-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: #1e293b;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 4px;
  min-width: 120px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 100;
  display: none;
}

[data-theme="light"] .mermaid-theme-menu {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.mermaid-theme-menu.active { display: block; }

.mermaid-theme-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  font-size: 12px;
  color: #a1a1aa;
  cursor: pointer;
  border-radius: 5px;
  transition: all 0.15s;
}

.mermaid-theme-menu-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #e0e0e0;
}

.mermaid-theme-menu-item.active {
  color: #818cf8;
  font-weight: 600;
}

.mermaid-theme-menu-item .check {
  width: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

[data-theme="light"] .mermaid-theme-menu-item { color: #64748b; }
[data-theme="light"] .mermaid-theme-menu-item:hover { background: rgba(0, 0, 0, 0.04); color: #1e293b; }
[data-theme="light"] .mermaid-theme-menu-item.active { color: #6366f1; }

/* =====================================================================
   高优先级覆盖: 强制 mermaid 内部 pre/code 不受 chat.css
   .msg-bubble pre / [data-theme="light"] .msg-bubble pre 影响
   (specificity 更高, 会把 mermaid 的 pre 染成深色, 导致浅色主题下图显示异常)
   图面板固定浅色不随主题变; 容器/代码区随主题
   ===================================================================== */
.mermaid-container .mermaid-scroll-wrapper .mermaid-view pre,
.mermaid-container .mermaid-scroll-wrapper .mermaid-view pre.mermaid,
[data-theme="light"] .mermaid-container .mermaid-scroll-wrapper .mermaid-view pre,
[data-theme="light"] .mermaid-container .mermaid-scroll-wrapper .mermaid-view pre.mermaid {
  background: transparent !important;
  margin: 0 !important;
  padding: 0 !important;
  border-radius: 0 !important;
}

.mermaid-container .mermaid-code pre,
[data-theme="light"] .mermaid-container .mermaid-code pre {
  background: #0f172a !important;
  border-radius: 0 !important;
  margin: 0 !important;
}
[data-theme="light"] .mermaid-container .mermaid-code pre {
  background: #f1f5f9 !important;
}

.mermaid-container .mermaid-code pre code,
[data-theme="light"] .mermaid-container .mermaid-code pre code {
  background: transparent !important;
  padding: 14px !important;
}
.mermaid-container .mermaid-code pre code { color: #d0d0e0 !important; }
[data-theme="light"] .mermaid-container .mermaid-code pre code { color: #1e293b !important; }

/* mermaid 图所在浅色面板: 深浅主题都强制浅色, 不随主题变 */
.mermaid-container .mermaid-view,
[data-theme="light"] .mermaid-container .mermaid-view {
  background: #f5f5f7 !important;
}

/* =====================================================================
   流式生成中的 mermaid 块
   - AI 边输出 mermaid 代码, 页面边尝试渲染图表
   - 工具栏只显示类型标签 + "流式生成中" 动效提示
   - 代码还未闭合时, pre.mermaid 显示代码文本(限制最大高度避免撑大视图)
   ===================================================================== */
.mermaid-streaming-tip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  margin-left: 4px;
  font-size: 10px;
  color: #818cf8;
  background: rgba(99, 102, 241, 0.08);
  border-radius: 5px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.streaming-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #818cf8;
  border-radius: 50%;
  animation: streaming-pulse 1.2s infinite ease-in-out;
  flex-shrink: 0;
}

@keyframes streaming-pulse {
  0%, 100% { opacity: 0.3; transform: scale(0.85); }
  50%      { opacity: 1;   transform: scale(1.15); }
}

[data-theme="light"] .mermaid-streaming-tip {
  color: #6366f1;
  background: rgba(99, 102, 241, 0.1);
}

[data-theme="light"] .streaming-dot {
  background: #6366f1;
}

/* 流式状态: 限制代码文本的最大高度, 避免未渲染的长代码撑大视图 */
.mermaid-container.streaming .mermaid-view pre.mermaid {
  max-height: 360px;
  overflow: auto;
  text-align: left;
  padding: 12px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: #475569;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  white-space: pre-wrap;
  word-break: break-all;
}

[data-theme="light"] .mermaid-container.streaming .mermaid-view pre.mermaid {
  color: #64748b;
}