/* 案例库浏览页样式(2026-05-08 重写,纸墨调延续 learn_base) */

/* Hero */
.cases-hero {
  padding: 36px 28px;
  margin-bottom: 24px;
  background: linear-gradient(135deg, rgba(184, 134, 11, 0.1), var(--paper-3));
  border: 1px solid var(--gold-dim);
  border-radius: 14px;
  text-align: center;
}
.cases-hero h1 {
  font-size: 1.7em;
  color: var(--gold);
  letter-spacing: 0.14em;
  font-weight: 400;
  margin-bottom: 10px;
}
.cases-hero .hero-sub {
  color: var(--text-dim);
  font-size: 0.95em;
  line-height: 1.8;
  margin-bottom: 20px;
}
.cases-hero .hero-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.cases-hero .stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.cases-hero .stat .num {
  font-size: 1.6em;
  color: var(--gold);
  font-weight: 500;
}
.cases-hero .stat .lbl {
  font-size: 0.8em;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  margin-top: 2px;
}

/* Toolbar:搜索 + 视图切换 + 排序 */
.cases-toolbar {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.search-wrap {
  position: relative;
  flex: 1;
  min-width: 240px;
}
.search-wrap input {
  width: 100%;
  padding: 10px 14px 10px 38px;
  background: var(--paper-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95em;
  font-family: inherit;
  transition: border-color 0.2s;
}
.search-wrap input:focus {
  outline: none;
  border-color: var(--gold-dim);
}
.search-wrap .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  font-size: 1.2em;
}

/* Phase C 模块 3:智能问句搜索 toggle */
.ask-mode-toggle {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  padding: 4px 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 14px;
  font-size: 0.78em;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.04em;
}
.ask-mode-toggle:hover {
  border-color: var(--gold-dim);
  color: var(--text);
}
.ask-mode-toggle[aria-pressed="true"] {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  color: white;
}
.ask-extracted-kw {
  width: 100%;
  padding: 8px 12px;
  margin-top: 6px;
  font-size: 0.82em;
  color: var(--text-dim);
  background: rgba(155, 47, 47, 0.04);
  border: 1px dashed var(--border);
  border-radius: 6px;
}
.ask-extracted-kw .kw-label {
  color: var(--cinnabar);
  margin-right: 8px;
}
.ask-extracted-kw .kw-tag {
  display: inline-block;
  margin: 0 4px;
  padding: 1px 8px;
  background: var(--paper-3);
  border-radius: 10px;
  font-size: 0.92em;
  color: var(--text);
}

.view-switch {
  display: flex;
  background: var(--paper-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.view-btn {
  padding: 9px 18px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.88em;
  letter-spacing: 0.06em;
  transition: all 0.2s;
}
.view-btn:hover {
  color: var(--text);
}
.view-btn.active {
  background: var(--gold);
  color: #1a1a2e;
}

.sort-select {
  padding: 9px 14px;
  background: var(--paper-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.88em;
  font-family: inherit;
  cursor: pointer;
}

/* 筛选栏 */
.cases-filters {
  margin-bottom: 18px;
  padding: 14px 16px;
  background: var(--paper-3);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.filter-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.filter-label {
  color: var(--text-dim);
  font-size: 0.82em;
  letter-spacing: 0.1em;
  min-width: 44px;
  flex-shrink: 0;
}
.filter-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  flex: 1;
}
.chip {
  padding: 4px 12px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text-dim);
  font-size: 0.82em;
  cursor: pointer;
  transition: all 0.2s;
}
.chip:hover {
  border-color: var(--gold-dim);
  color: var(--text);
}
.chip.active {
  background: var(--gold);
  border-color: var(--gold);
  color: #1a1a2e;
  font-weight: 500;
}
.chip .count {
  opacity: 0.7;
  font-size: 0.85em;
  margin-left: 3px;
}

/* 结果 bar */
.results-bar {
  margin-bottom: 14px;
  font-size: 0.85em;
  color: var(--text-dim);
  display: flex;
  gap: 12px;
  align-items: center;
}
.results-bar #resultCount {
  color: var(--gold);
  font-weight: 500;
}
.link-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.85em;
  text-decoration: underline;
  padding: 0;
}
.link-btn:hover {
  color: var(--gold);
}

/* View: 卡片 */
.view-pane {
  display: none;
}
.view-pane.active {
  display: block;
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}
.case-card {
  background: linear-gradient(180deg, var(--surface), var(--paper-3));
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 18px 14px;
  transition: all 0.25s;
  display: block;
  color: var(--text);
  text-decoration: none;
}
.case-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.3);
}
.case-card .meta-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.case-card .year {
  color: var(--gold);
  font-size: 0.78em;
  letter-spacing: 0.12em;
}
.case-card .tag {
  font-size: 0.7em;
  padding: 1px 8px;
  border-radius: 10px;
  background: rgba(184, 134, 11, 0.12);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.case-card .title {
  color: var(--text-bright);
  font-size: 1.05em;
  font-weight: 400;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
  line-height: 1.45;
}
.case-card .parties {
  color: var(--text-dim);
  font-size: 0.84em;
  margin-bottom: 10px;
}
.case-card .parties strong {
  color: var(--text);
  font-weight: 400;
}
.case-card .lesson-preview {
  color: var(--text-dim);
  font-size: 0.82em;
  line-height: 1.55;
  margin-bottom: 12px;
  min-height: 2.4em;
}
.case-card .footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78em;
  color: var(--text-dim);
}
.case-verdict {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.78em;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: #1a1a2e;
}

/* View: 时间轴 — Phase C 模块 5 横向 + 朝代跳转 */
.cases-timeline {
  position: relative;
  padding: 8px 0 20px 0;
}

/* 朝代快速跳转栏 */
.timeline-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 8px 0 16px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.timeline-era-jump {
  padding: 6px 12px;
  font-size: 0.82em;
  letter-spacing: 0.06em;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 16px;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.18s;
}
.timeline-era-jump:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.timeline-era-jump.is-active {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
  background: rgba(155, 47, 47, 0.04);
}

/* 横向条 */
.timeline-strip {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 16px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 30px 12px 30px 12px;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  /* 用伪元素画时间轴线 */
}
.timeline-strip::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: linear-gradient(
    to right,
    var(--gold-dim) 0%,
    var(--gold) 50%,
    var(--gold-dim) 100%
  );
  transform: translateY(-1px);
  pointer-events: none;
  z-index: 0;
}
.timeline-strip::-webkit-scrollbar {
  height: 6px;
}
.timeline-strip::-webkit-scrollbar-thumb {
  background: var(--gold-dim);
  border-radius: 3px;
}

/* 单条时间轴项 — 上下交替 */
.timeline-item {
  flex: 0 0 220px;
  position: relative;
  z-index: 1;
}
.timeline-item.above {
  margin-top: 0;
  margin-bottom: auto;
}
.timeline-item.below {
  margin-top: auto;
  margin-bottom: 0;
}

/* 圆点 — 锚在时间轴上 */
.timeline-item .timeline-dot {
  position: absolute;
  left: 50%;
  width: 10px;
  height: 10px;
  background: var(--gold);
  border-radius: 50%;
  border: 2px solid var(--paper-3);
  transform: translateX(-50%);
  z-index: 2;
}
.timeline-item.above .timeline-dot {
  bottom: -22px;
}
.timeline-item.below .timeline-dot {
  top: -22px;
}

.timeline-card {
  display: block;
  padding: 10px 14px;
  background: var(--paper-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s;
  min-height: 90px;
}
.timeline-card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
.timeline-card .year {
  color: var(--gold);
  font-size: 0.78em;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.timeline-card .title {
  font-size: 0.88em;
  color: var(--text-bright);
  margin-bottom: 4px;
  font-weight: 500;
  line-height: 1.4;
  /* 限制 2 行 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.timeline-card .who {
  font-size: 0.74em;
  color: var(--text-dim);
}
.timeline-card .era-tag {
  display: inline-block;
  margin-top: 4px;
  padding: 1px 6px;
  font-size: 0.66em;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
}

/* 移动端:隐藏跳转栏(过窄不实用),只保留横向滚动 */
@media (max-width: 720px) {
  .timeline-nav { display: none; }
  .timeline-strip { padding: 24px 12px; }
  .timeline-item { flex: 0 0 180px; }
}

/* View: 标签云 */
.cases-tags {
  padding: 20px;
  background: var(--paper-3);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: center;
  line-height: 2.4;
}
.tag-cloud-item {
  display: inline-block;
  margin: 4px 6px;
  padding: 4px 12px;
  border-radius: 14px;
  background: rgba(184, 134, 11, 0.08);
  color: var(--text);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}
.tag-cloud-item:hover {
  border-color: var(--gold-dim);
  background: rgba(184, 134, 11, 0.18);
}
.tag-cloud-item .tc-count {
  opacity: 0.6;
  font-size: 0.75em;
  margin-left: 4px;
}

/* 空结果 */
.cases-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-dim);
}
.cases-empty p {
  margin-bottom: 16px;
}

/* 移动端 */
@media (max-width: 720px) {
  .cases-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .timeline-item {
    width: 100%;
    text-align: left !important;
    padding-left: 32px !important;
    padding-right: 12px;
  }
  .timeline-item:nth-child(even) {
    left: 0;
  }
  .cases-timeline .timeline-axis {
    left: 12px;
    transform: none;
  }
  .timeline-item .timeline-dot {
    left: 5px !important;
    right: auto !important;
  }
  .filter-group {
    flex-direction: column;
    align-items: flex-start;
  }
}