/* === 基础重置 === */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --color-bg: #F5F0E1;
  --color-primary: #8B6F47;
  --color-accent: #E8A04D;
  --color-text: #4A3B2A;
  --color-text-light: #7A6B5A;
  --color-card: #FFFEF8;
  --color-border: #D4C5A9;
  --color-recalled: #7BA67B;
  --color-hint: #D4A843;
  --color-almost: #E8A04D;
  --color-skipped: #B0B0B0;
  --font-handwrite: 'Ma Shan Zheng', 'ZCOOL XiaoWei', 'KaiTi', '楷体', 'STKaiti', '华文楷体', cursive;
  --font-body: 'Noto Sans SC', -apple-system, 'Microsoft YaHei', '微软雅黑', sans-serif;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  background-image: url("../assets/paper-texture.png");
  background-repeat: repeat;
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
}

#app {
  width: 100%;
  max-width: 420px;
  min-height: 100vh;
  background: var(--color-bg);
  background-image: url("../assets/paper-texture.png");
  background-repeat: repeat;
  position: relative;
  box-shadow: 0 0 40px rgba(0,0,0,0.12);
}

/* === 页面切换 === */
.page { display: none; min-height: 100vh; padding: 24px 20px; animation: fadeIn 0.4s ease; }
.page.active { display: flex; flex-direction: column; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-content { flex: 1; display: flex; flex-direction: column; }

/* === 排版 === */
.title-handwrite {
  font-family: var(--font-handwrite);
  font-size: 3rem;
  color: var(--color-primary);
  text-align: center;
  margin-top: 60px;
  margin-bottom: 16px;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--color-text);
  text-align: center;
  margin-bottom: 12px;
  font-weight: 500;
}

.description {
  font-size: 0.9rem;
  color: var(--color-text-light);
  text-align: center;
  line-height: 1.6;
  margin-bottom: 40px;
  padding: 0 16px;
}

.page-title {
  font-family: var(--font-handwrite);
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.page-hint {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
  line-height: 1.5;
}

/* === 按钮 === */
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 14px 24px;
  border-radius: 12px;
  font-size: 1rem;
  font-family: var(--font-body);
  cursor: pointer;
  margin-top: auto;
  margin-bottom: 12px;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px rgba(139,111,71,0.3);
}

.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(139,111,71,0.4); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-border);
  padding: 12px 20px;
  border-radius: 12px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-secondary:hover { background: rgba(139,111,71,0.05); }

.btn-back {
  background: transparent;
  border: none;
  color: var(--color-text-light);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 8px;
  align-self: flex-start;
  transition: color 0.2s, opacity 0.2s;
}

.btn-back:hover {
  color: var(--color-primary);
}

.btn-back:active {
  opacity: 0.6;
}

.btn-row { display: flex; gap: 12px; margin-top: auto; margin-bottom: 12px; }
.btn-row .btn-primary, .btn-row .btn-secondary { flex: 1; margin: 0; }

/* === 卡片 === */
.card-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }

.card-entry {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  transform: rotate(-0.3deg);
}

.card-entry:hover { transform: rotate(0deg) translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.card-entry:nth-child(even) { transform: rotate(0.3deg); }
.card-entry:nth-child(even):hover { transform: rotate(0deg) translateY(-2px); }

.card-icon { font-size: 1.5rem; }
.card-title { font-size: 1.05rem; font-weight: 700; color: var(--color-primary); }
.card-desc { font-size: 0.8rem; color: var(--color-text-light); }

/* === 输入 === */
.textarea {
  width: 100%;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  resize: vertical;
  color: var(--color-text);
}

.textarea:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(232,160,77,0.15); }
.textarea-large { min-height: 160px; }

/* === Tab 切换 === */
.input-tabs { display: flex; gap: 0; margin-bottom: 16px; border-bottom: 2px solid var(--color-border); }
.tab {
  background: transparent;
  border: none;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-family: var(--font-body);
}
.tab.active { color: var(--color-primary); border-bottom-color: var(--color-accent); font-weight: 700; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* === 示例列表 === */
.example-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: transform 0.2s;
}

.example-item:hover { transform: translateX(4px); }
.example-item-title { font-weight: 700; color: var(--color-primary); font-size: 0.95rem; margin-bottom: 4px; }
.example-item-desc { font-size: 0.8rem; color: var(--color-text-light); }

/* === 统一输入区 === */
.input-unified {
  position: relative;
  margin-bottom: 12px;
}

.input-unified .textarea {
  width: 100%;
  box-sizing: border-box;
  padding-right: 48px;
}

.input-unified.dragover {
  border: 2px dashed var(--color-accent);
  border-radius: 8px;
  background: rgba(139, 111, 71, 0.05);
}

.upload-fab {
  position: absolute;
  bottom: 10px;
  right: 10px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: 2px dashed var(--color-accent);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, background 0.2s;
  z-index: 5;
}

.upload-fab:hover {
  transform: scale(1.1);
  background: var(--color-accent);
}

/* === 示例按钮行 === */
.example-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.example-btn {
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 0.82rem;
  color: var(--color-primary);
  cursor: pointer;
  font-family: var(--font-body);
  transition: transform 0.2s, border-color 0.2s;
}

.example-btn:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

/* === 未实现入口 === */
.input-extras { display: flex; gap: 12px; margin: 12px 0; flex-wrap: wrap; }
.extra-disabled { font-size: 0.8rem; color: var(--color-skipped); opacity: 0.6; cursor: pointer; }
.extra-disabled:hover { opacity: 1; }

/* === 材料预览 === */
.material-preview {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 12px;
}

.material-title { font-size: 0.85rem; color: var(--color-text-light); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 260px; }
.btn-toggle { background: none; border: none; color: var(--color-accent); font-size: 0.85rem; cursor: pointer; white-space: nowrap; }
.material-full { background: var(--color-card); border: 1px solid var(--color-border); border-radius: 8px; padding: 14px; margin-bottom: 12px; max-height: 200px; overflow-y: auto; }
.material-full pre { white-space: pre-wrap; font-family: var(--font-body); font-size: 0.85rem; line-height: 1.6; color: var(--color-text); }

/* === 原文引导提示 === */
.material-hint {
  font-size: 0.8rem;
  color: var(--color-hint);
  font-style: italic;
  padding: 6px 14px;
  margin-bottom: 8px;
  background: rgba(212,168,67,0.08);
  border-radius: 8px;
  display: none;
}

.material-hint.visible {
  display: block;
}

/* === 候选要点 === */
.points-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }

.point-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 12px 14px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.point-item:hover { border-color: var(--color-accent); }
.point-item.selected { border-color: var(--color-recalled); background: rgba(123,166,123,0.08); }

.point-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: 5px;
  flex-shrink: 0;
  margin-top: 1px;
  position: relative;
  transition: background 0.2s, border-color 0.2s;
}

.point-item.selected .point-checkbox {
  background: var(--color-recalled);
  border-color: var(--color-recalled);
}

.point-item.selected .point-checkbox::after {
  content: '✓';
  color: #fff;
  font-size: 12px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.point-text { font-size: 0.92rem; line-height: 1.5; color: var(--color-text); }

/* === 追问问题 === */
.questions-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 20px; }

.question-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  transform: rotate(-0.3deg);
}

.question-card:nth-child(even) { transform: rotate(0.3deg); }

.question-text { font-size: 0.95rem; font-weight: 500; color: var(--color-text); margin-bottom: 8px; }
.question-hint { font-size: 0.82rem; color: var(--color-hint); font-style: italic; }

/* === 反馈折叠 === */
.feedback-section {
  margin-bottom: 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
}

.feedback-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
}

.feedback-header:hover {
  background: rgba(139,111,71,0.04);
}

.feedback-header .expand-icon {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--color-text-light);
  transition: transform 0.2s;
}

.feedback-section.expanded .expand-icon {
  transform: rotate(90deg);
}

.feedback-items {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 0 14px 12px 46px;
}

.feedback-section.expanded .feedback-items {
  display: flex;
}

.feedback-icon { width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; color: #fff; }
.feedback-label { font-size: 1rem; font-weight: 700; }
.feedback-item { font-size: 0.88rem; color: var(--color-text); line-height: 1.5; padding: 4px 0; }

/* 四类反馈色 */
.fb-recalled .feedback-icon { background: var(--color-recalled); }
.fb-recalled .feedback-label { color: var(--color-recalled); }
.fb-hint .feedback-icon { background: var(--color-hint); }
.fb-hint .feedback-label { color: var(--color-hint); }
.fb-almost .feedback-icon { background: var(--color-almost); }
.fb-almost .feedback-label { color: var(--color-almost); }
.fb-skipped .feedback-icon { background: var(--color-skipped); }
.fb-skipped .feedback-label { color: var(--color-skipped); }

/* === 完成 === */
.complete-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-recalled);
  color: #fff;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 60px auto 20px;
}

.complete-desc { text-align: center; color: var(--color-text-light); margin-bottom: 40px; }

/* === 加载遮罩 === */
.loading-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(245,240,225,0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { color: var(--color-text-light); font-size: 0.9rem; }

/* === Toast 提示（错误/信息共用，滑入滑出动画） === */
#error-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  background: #C85450;
  color: #fff;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 0.88rem;
  z-index: 1100;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 360px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  visibility: hidden;
  opacity: 0;
  transition: visibility 0.3s, opacity 0.3s ease, transform 0.3s ease;
}

#error-toast.show {
  visibility: visible;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

#error-toast button { background: none; border: none; color: #fff; font-size: 1.2rem; cursor: pointer; }

/* === 信息提示（暖棕色） === */
#error-toast.info-toast {
  background: var(--color-primary);
  border: 2px dashed var(--color-accent);
}

/* === 首页流程预览 === */
.flow-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 32px;
  padding: 20px 16px;
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: 12px;
}

.flow-step {
  display: flex;
  align-items: center;
  gap: 10px;
}

.flow-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.flow-text {
  font-size: 0.88rem;
  color: var(--color-text);
}

.flow-arrow {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* === 桌面端优化 === */
@media (min-width: 768px) {
  body {
    padding: 24px 0;
    background-image: url("../assets/paper-texture.png");
    background-repeat: repeat;
    background-color: #EDE6D3;
  }

  #app {
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15), 0 2px 8px rgba(0,0,0,0.08);
    min-height: calc(100vh - 48px);
    margin: 24px 0;
  }
}

/* === 内联补充 === */
#supplement-area {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 2px dashed var(--color-border);
}

/* === 上传区域 === */
.upload-area {
  border: 2px dashed var(--color-border);
  border-radius: 12px;
  padding: 32px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: var(--color-card);
  margin-bottom: 16px;
}

.upload-area:hover {
  border-color: var(--color-accent);
  background: rgba(232, 160, 77, 0.04);
}

.upload-area.dragover {
  border-color: var(--color-accent);
  background: rgba(232, 160, 77, 0.08);
}

.upload-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.upload-text {
  font-size: 0.95rem;
  color: var(--color-text);
  font-weight: 500;
  margin-bottom: 6px;
}

.upload-hint {
  font-size: 0.78rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* === OCR 模式选择器 === */
.ocr-mode-selector {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 16px;
}

.ocr-mode-label {
  font-size: 0.85rem;
  color: var(--color-text);
  font-weight: 700;
  margin-bottom: 10px;
}

.ocr-mode-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--color-text);
}

.ocr-mode-option input[type="radio"] {
  accent-color: var(--color-accent);
}

.ocr-mode-option span:first-of-type {
  font-weight: 500;
  min-width: 70px;
}

.ocr-mode-desc {
  font-size: 0.76rem;
  color: var(--color-text-light);
}

/* === 上传加载 === */
.upload-loading {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
}

.loading-spinner-small {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

#upload-loading-text {
  font-size: 0.88rem;
  color: var(--color-text-light);
}

/* === 上传结果 === */
.upload-result {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.upload-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 4px;
}

.upload-filename {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 500;
}

.upload-word-count {
  font-size: 0.78rem;
  color: var(--color-text-light);
}

/* === 文件列表 === */
.file-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
  max-height: 200px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(139,111,71,0.3) transparent;
  padding-right: 4px;
}

.file-list::-webkit-scrollbar {
  width: 6px;
}
.file-list::-webkit-scrollbar-track {
  background: transparent;
}
.file-list::-webkit-scrollbar-thumb {
  background: rgba(139,111,71,0.3);
  border-radius: 3px;
}
.file-list::-webkit-scrollbar-thumb:hover {
  background: rgba(139,111,71,0.5);
}

.file-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 10px 14px;
  transition: border-color 0.2s;
}

.file-card.recognized { border-color: var(--color-recalled); }
.file-card.processing { border-color: var(--color-accent); opacity: 0.7; }
.file-card.error { border-color: #C85450; }

.file-card-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.file-card-info {
  flex: 1;
  min-width: 0;
}

.file-card-name {
  font-size: 0.85rem;
  color: var(--color-text);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-card-status {
  font-size: 0.76rem;
  color: var(--color-text-light);
}

.file-card.recognized .file-card-status { color: var(--color-recalled); }
.file-card.error .file-card-status { color: #C85450; }

.file-card-preview-btn {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.76rem;
  color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
  font-family: var(--font-body);
}

.file-card-preview-btn:hover { background: rgba(139,111,71,0.06); }

.file-card-delete {
  background: none;
  border: none;
  color: var(--color-text-light);
  font-size: 1.1rem;
  cursor: pointer;
  flex-shrink: 0;
  padding: 0 4px;
  line-height: 1;
}

.file-card-delete:hover { color: #C85450; }

/* === 预览弹窗 === */
.preview-popup-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(74,59,42,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1200;
  padding: 20px;
}

.preview-popup {
  background: var(--color-bg);
  background-image: url("../assets/paper-texture.png");
  background-repeat: repeat;
  border-radius: 14px;
  width: 100%;
  max-width: 500px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  overflow: hidden;
}

.preview-popup-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px dashed var(--color-border);
}

.preview-popup-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-popup-close {
  background: none;
  border: none;
  color: var(--color-text-light);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}

.preview-popup-close:hover { color: #C85450; }

.preview-file-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 8px 14px 6px;
  overflow-x: auto;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.preview-file-tabs:empty { display: none; }

.preview-file-tab {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 0.78rem;
  color: var(--color-text-light);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  font-family: var(--font-body);
}

.preview-file-tab.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.preview-popup-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 18px;
  scrollbar-width: thin;
  scrollbar-color: rgba(139,111,71,0.3) transparent;
}

.preview-popup-body::-webkit-scrollbar {
  width: 6px;
}
.preview-popup-body::-webkit-scrollbar-track {
  background: transparent;
}
.preview-popup-body::-webkit-scrollbar-thumb {
  background: rgba(139,111,71,0.3);
  border-radius: 3px;
}

/* Markdown 渲染样式 */
.preview-popup-body h1,
.preview-popup-body h2,
.preview-popup-body h3 {
  color: var(--color-primary);
  margin: 12px 0 6px;
  line-height: 1.3;
}
.preview-popup-body h1 { font-size: 1.25rem; }
.preview-popup-body h2 { font-size: 1.1rem; }
.preview-popup-body h3 { font-size: 1rem; }

.preview-popup-body p {
  margin: 6px 0;
  line-height: 1.7;
}

.preview-popup-body ul,
.preview-popup-body ol {
  margin: 6px 0;
  padding-left: 20px;
}

.preview-popup-body li {
  margin: 3px 0;
  line-height: 1.6;
}

.preview-popup-body code {
  background: rgba(139,111,71,0.08);
  padding: 1px 4px;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  font-size: 0.85em;
  color: var(--color-accent);
}

.preview-popup-body pre {
  background: rgba(139,111,71,0.06);
  border: 1px dashed var(--color-border);
  border-radius: 6px;
  padding: 10px 12px;
  overflow-x: auto;
  margin: 8px 0;
}

.preview-popup-body pre code {
  background: none;
  padding: 0;
  border-radius: 0;
}

.preview-popup-body blockquote {
  border-left: 3px solid var(--color-border);
  padding-left: 12px;
  margin: 8px 0;
  color: var(--color-text-light);
}

.preview-popup-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 8px 0;
}

.preview-popup-body th,
.preview-popup-body td {
  border: 1px solid var(--color-border);
  padding: 6px 10px;
  text-align: left;
  font-size: 0.85rem;
}

.preview-popup-body th {
  background: rgba(139,111,71,0.08);
  font-weight: 600;
}

.preview-popup-body strong {
  font-weight: 700;
  color: var(--color-primary);
}

.preview-popup-body em {
  font-style: italic;
}

.preview-popup-body a {
  color: var(--color-accent);
  text-decoration: underline;
}

.preview-popup-body hr {
  border: none;
  border-top: 1px dashed var(--color-border);
  margin: 12px 0;
}

.preview-popup-body img {
  max-width: 100%;
  border-radius: 6px;
}

/* ===== 知识库样式 ===== */

/* 知识库入口按钮 */
.kb-entry-btn {
  margin-top: 12px;
  width: 100%;
}

/* 统计栏 */
.kb-stats {
  display: flex;
  justify-content: space-around;
  gap: 12px;
  margin: 16px 0;
}

.kb-stat-item {
  flex: 1;
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: 12px;
  padding: 12px 8px;
  text-align: center;
}

.kb-stat-num {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-handwrite);
}

.kb-stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

/* 搜索栏 */
.kb-search-bar {
  margin: 12px 0 16px;
}

.kb-search-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px dashed var(--color-border);
  border-radius: 10px;
  background: var(--color-card);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s;
}

.kb-search-input:focus {
  border-color: var(--color-accent);
  border-style: solid;
}

.kb-search-input::placeholder {
  color: var(--color-text-light);
}

/* 记录列表 */
.kb-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

/* 记录卡片 */
.kb-card {
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: 12px;
  padding: 14px 16px;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.1s;
}

.kb-card:hover {
  border-color: var(--color-accent);
  border-style: solid;
}

.kb-card:active {
  transform: scale(0.98);
}

.kb-card-type {
  display: inline-block;
  font-size: 0.7rem;
  color: var(--color-accent);
  background: rgba(232, 160, 77, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 6px;
}

.kb-card-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 4px;
  /* 超出省略 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kb-card-meta {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

/* 空状态 */
.kb-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-text-light);
}

.kb-empty-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.kb-loading {
  text-align: center;
  padding: 20px;
  color: var(--color-text-light);
}

/* 详情页 */
.kb-detail-title {
  font-family: var(--font-handwrite);
  font-size: 1.5rem;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 6px;
}

.kb-detail-meta {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.kb-section-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 16px 0 8px;
  padding-bottom: 4px;
  border-bottom: 1px dashed var(--color-border);
}

.kb-detail-material {
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text);
  max-height: 300px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(139,111,71,0.3) transparent;
}

.kb-detail-material::-webkit-scrollbar {
  width: 5px;
}

.kb-detail-material::-webkit-scrollbar-thumb {
  background: rgba(139,111,71,0.3);
  border-radius: 3px;
}

/* Markdown 渲染样式（材料区域） */
.kb-detail-material h1,
.kb-detail-material h2,
.kb-detail-material h3 {
  color: var(--color-primary);
  margin: 8px 0 4px;
  line-height: 1.3;
}
.kb-detail-material h1 { font-size: 1.15rem; }
.kb-detail-material h2 { font-size: 1rem; }
.kb-detail-material h3 { font-size: 0.9rem; }
.kb-detail-material p { margin: 4px 0; line-height: 1.6; }
.kb-detail-material ul,
.kb-detail-material ol { margin: 4px 0; padding-left: 18px; }
.kb-detail-material li { margin: 2px 0; line-height: 1.5; }
.kb-detail-material code {
  background: rgba(139,111,71,0.08);
  padding: 1px 4px;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  font-size: 0.85em;
  color: var(--color-accent);
}
.kb-detail-material pre {
  background: rgba(139,111,71,0.06);
  border: 1px dashed var(--color-border);
  border-radius: 6px;
  padding: 8px 10px;
  overflow-x: auto;
  margin: 6px 0;
}
.kb-detail-material pre code { background: none; padding: 0; }
.kb-detail-material blockquote {
  border-left: 3px solid var(--color-border);
  padding-left: 10px;
  margin: 6px 0;
  color: var(--color-text-light);
}
.kb-detail-material strong { font-weight: 700; color: var(--color-primary); }

.kb-detail-recall {
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text);
  white-space: pre-wrap;
}

/* 知识点分组 */
.kb-card-group {
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 8px;
}

.kb-group-label {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.kb-group-recalled .kb-group-label { color: var(--color-recalled); }
.kb-group-hint .kb-group-label { color: var(--color-accent); }
.kb-group-almost .kb-group-label { color: var(--color-almost); }
.kb-group-skipped .kb-group-label { color: var(--color-skipped); }

.kb-card-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.kb-card-list li {
  font-size: 0.85rem;
  color: var(--color-text);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}

.kb-card-list li::before {
  content: '·';
  position: absolute;
  left: 4px;
  color: var(--color-text-light);
}

.kb-card-hint {
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-style: italic;
}

/* 追问与回答 */
.kb-detail-followup {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.kb-followup-item {
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  padding: 10px 12px;
}

.kb-followup-q {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.kb-followup-a {
  font-size: 0.82rem;
  color: var(--color-text);
  line-height: 1.5;
}

.kb-followup-hint {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin: 4px 0 8px 0;
  font-style: italic;
}

/* 导出按钮 */
#kb-export-btn {
  display: none;
}

/* ===== Phase 5: 知识图谱弹窗 ===== */
.graph-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(74, 59, 42, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.graph-modal {
  background: var(--color-card);
  border: 2px dashed var(--color-border);
  border-radius: 12px;
  width: 90vw;
  max-width: 800px;
  height: 80vh;
  max-height: 600px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(74, 59, 42, 0.2);
}

.graph-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px dashed var(--color-border);
}

.graph-modal-title {
  font-family: var(--font-handwrite);
  font-size: 1.3rem;
  color: var(--color-primary);
}

.graph-modal-close {
  background: none;
  border: 1px dashed var(--color-border);
  border-radius: 50%;
  width: 28px;
  height: 28px;
  font-size: 1rem;
  color: var(--color-text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.graph-modal-close:hover {
  background: var(--color-bg);
  color: var(--color-primary);
}

.graph-modal-body {
  flex: 1;
  position: relative;
  overflow: hidden;
  border-radius: 0 0 10px 10px;
}

.graph-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  background: var(--color-bg);
}

.graph-canvas:active {
  cursor: grabbing;
}

.graph-legend {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  padding: 8px 10px;
  max-width: 140px;
}

/* 知识库详情页图谱区块 */
.kb-graph-section {
  margin: 16px 0;
}

.kb-graph-section button {
  margin-top: 4px;
}