/* ===== 全局变量 ===== */
:root {
  --bg: #0b0f19;
  --bg2: #131a2a;
  --bg3: #1a2236;
  --bg4: #212d45;
  --border: #2a3654;
  --border2: #3a4a6a;
  --accent: #d4a843;
  --accent-light: #e8c97a;
  --accent-dim: rgba(212,168,67,0.15);
  --accent2: #c0392b;
  --accent3: #2980b9;
  --text: #e6edf3;
  --text2: #8b949e;
  --text3: #5a6a7e;
  --axis: #e6edf3;
  --panel-w: 380px;
  --header-h: 56px;
  --filter-h: 44px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg: 0 16px 64px rgba(0,0,0,0.6);
  --transition: 0.25s cubic-bezier(.4,0,.2,1);
  --glow: 0 0 20px rgba(212,168,67,0.3);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif CJK SC', sans-serif;
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 自定义选中色 */
::selection {
  background: rgba(212,168,67,0.3);
  color: var(--text);
}

/* ===== HEADER ===== */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(11,15,25,0.88);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  display: flex;
  align-items: center;
  padding: 0 20px;
  z-index: 200;
  gap: 16px;
}

.header-left { flex: 0 0 auto; }
.header-center { flex: 1; overflow-x: auto; display: flex; justify-content: center; }
.header-right { flex: 0 0 auto; display: flex; align-items: center; gap: 12px; }

.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
  font-size: 24px;
  color: var(--accent);
  filter: drop-shadow(0 0 8px rgba(212,168,67,0.4));
  animation: logoPulse 3s ease-in-out infinite;
}
@keyframes logoPulse {
  0%, 100% { filter: drop-shadow(0 0 8px rgba(212,168,67,0.4)); }
  50% { filter: drop-shadow(0 0 16px rgba(212,168,67,0.7)); }
}
.logo-text {
  font-size: 17px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-light), var(--accent));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
  animation: shimmer 4s ease-in-out infinite;
}
@keyframes shimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.era-tabs {
  display: flex;
  gap: 4px;
  padding: 4px 0;
}
.era-tab {
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
  border: 1px solid transparent;
  color: var(--text2);
  transition: all var(--transition);
  background: transparent;
  position: relative;
  overflow: hidden;
}
.era-tab::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 0; height: 0;
  background: rgba(212,168,67,0.15);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.4s, height 0.4s;
}
.era-tab:hover::before { width: 120%; height: 120%; }
.era-tab:hover { color: var(--text); }
.era-tab.active {
  color: #0b0f19;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
  box-shadow: 0 0 12px rgba(212,168,67,0.4);
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}
.search-box input {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 22px;
  color: var(--text);
  font-size: 13px;
  padding: 7px 36px 7px 16px;
  outline: none;
  width: 200px;
  transition: all var(--transition);
}
.search-box input:focus {
  border-color: var(--accent);
  width: 260px;
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}
.search-box input::placeholder { color: var(--text3); }
.search-icon {
  position: absolute; right: 12px;
  font-size: 13px; color: var(--text3);
  pointer-events: none;
  transition: color var(--transition);
}
.search-box input:focus + .search-icon,
.search-box input:focus ~ .search-icon { color: var(--accent); }

.view-toggle { display: flex; gap: 4px; }
.btn-view {
  width: 36px; height: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  font-size: 15px;
  transition: all var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.btn-view:hover {
  background: var(--bg3);
  color: var(--text);
  border-color: var(--border2);
  transform: translateY(-1px);
}
.btn-view.active {
  background: var(--accent);
  color: #0b0f19;
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(212,168,67,0.3);
}

/* ===== 筛选条 ===== */
#filterBar {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  height: var(--filter-h);
  background: rgba(19,26,42,0.88);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 8px;
  z-index: 190;
  overflow-x: auto;
}
#filterBar::-webkit-scrollbar { height: 0; }
.filter-label { font-size: 12px; color: var(--text3); white-space: nowrap; font-weight: 500; }
.filter-btn {
  padding: 4px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.filter-btn::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 0; height: 0;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.35s, height 0.35s;
}
.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}
.filter-btn.active {
  background: var(--accent);
  color: #0b0f19;
  border-color: var(--accent);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(212,168,67,0.3);
}

/* ===== 主容器 ===== */
#mainContainer {
  position: fixed;
  top: calc(var(--header-h) + var(--filter-h));
  left: 0; right: 0;
  bottom: 0;
  overflow-x: auto;
  overflow-y: hidden;
  cursor: grab;
}
#mainContainer:active { cursor: grabbing; }
#mainContainer::-webkit-scrollbar {
  height: 6px;
  background: var(--bg2);
}
#mainContainer::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
#mainContainer::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

#timelineWrapper {
  position: relative;
  height: 100%;
  /* width set by JS */
}

/* 缩放 */
.zoom-controls {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 300;
  background: rgba(11,15,25,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px;
  box-shadow: var(--shadow);
}
.zoom-controls button {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text2);
  font-size: 18px;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1;
}
.zoom-controls button:hover {
  background: var(--bg3);
  border-color: var(--border);
  color: var(--accent);
  transform: scale(1.05);
}
.zoom-controls button:active {
  transform: scale(0.95);
}

/* 缩放级别显示 */
.zoom-level {
  position: fixed;
  bottom: 80px;
  right: 24px;
  z-index: 300;
  font-size: 11px;
  color: var(--text3);
  background: rgba(11,15,25,0.8);
  padding: 4px 10px;
  border-radius: 12px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  transition: opacity 0.3s;
}

/* 朝代色带 */
#dynastyBands {
  position: absolute;
  top: 0; bottom: 0;
  left: 0;
  pointer-events: none;
}
.dynasty-band {
  position: absolute;
  top: 0; bottom: 0;
  opacity: 0.06;
  transition: opacity 0.3s;
}
.dynasty-band:hover { opacity: 0.12; }
.dynasty-label {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.2);
  white-space: nowrap;
  writing-mode: horizontal-tb;
  user-select: none;
  pointer-events: none;
  text-shadow: 0 2px 8px rgba(0,0,0,0.8);
  letter-spacing: 0.15em;
}

/* 主轴 */
#axisLine {
  position: absolute;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--axis) 5%, var(--axis) 95%, transparent 100%);
  opacity: 0.5;
  pointer-events: none;
  box-shadow: 0 0 8px rgba(230,237,243,0.2);
}

/* 刻度 */
#axisTicks { position: absolute; pointer-events: none; }
.tick-mark {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: translateX(-50%);
}
.tick-line {
  width: 1px;
  background: var(--border);
}
.tick-label {
  font-size: 11px;
  color: var(--text3);
  white-space: nowrap;
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}
.tick-major .tick-line { background: rgba(255,255,255,0.15); }
.tick-major .tick-label { color: var(--text2); font-size: 12px; }

/* 事件节点 */
#eventsAbove, #eventsBelow { position: absolute; left: 0; width: 100%; pointer-events: none; }

.event-node {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: all;
  cursor: pointer;
  z-index: 20;
  transition: filter 0.2s;
}
.event-dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 2px solid;
  background: var(--bg);
  transition: transform 0.2s, box-shadow 0.2s;
  flex-shrink: 0;
}
.event-node:hover .event-dot {
  transform: scale(1.6);
  box-shadow: 0 0 12px currentColor;
}
.event-line {
  width: 1.5px;
  background: currentColor;
  opacity: 0.3;
  flex-shrink: 0;
}
.event-label {
  font-size: 11px;
  color: var(--text2);
  white-space: nowrap;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: center;
  transition: color 0.2s;
}
.event-node:hover .event-label { color: var(--text); }
.event-node.above { flex-direction: column-reverse; }

/* 事件类型颜色 */
.evt-war { color: #e74c3c; }
.evt-culture { color: #9b59b6; }
.evt-politics { color: #3498db; }
.evt-economy { color: #27ae60; }
.evt-science { color: #1abc9c; }
.evt-default { color: var(--accent); }

/* 人物条 */

.person-row {
  position: absolute;
  display: flex;
  align-items: center;
  height: 26px;
  cursor: pointer;
  z-index: 15;
  transition: opacity 0.2s;
}
.person-bar {
  height: 12px;
  border-radius: 6px;
  position: relative;
  transition: height 0.2s, filter 0.2s, box-shadow 0.2s;
  min-width: 4px;
}
.person-row:hover .person-bar {
  height: 16px;
  filter: brightness(1.3);
  box-shadow: 0 0 10px rgba(255,255,255,0.15);
}
.person-name {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  color: rgba(255,255,255,0.9);
  white-space: nowrap;
  pointer-events: none;
  text-shadow: 0 1px 4px rgba(0,0,0,0.9);
  font-weight: 500;
  letter-spacing: 0.02em;
}
.person-name-outside {
  font-size: 11px;
  white-space: nowrap;
  margin-left: 6px;
  color: var(--text2);
  pointer-events: none;
}

/* 类别颜色 - 更精致的渐变 */
.cat-emperor { background: linear-gradient(90deg, #c0392b, #e74c3c, #ef5350); }
.cat-military { background: linear-gradient(90deg, #8e44ad, #9b59b6, #ab47bc); }
.cat-scholar  { background: linear-gradient(90deg, #2980b9, #3498db, #42a5f5); }
.cat-philosopher { background: linear-gradient(90deg, #16a085, #1abc9c, #26c6da); }
.cat-scientist { background: linear-gradient(90deg, #27ae60, #2ecc71, #66bb6a); }
.cat-artist   { background: linear-gradient(90deg, #d35400, #e67e22, #ffa726); }
.cat-politician { background: linear-gradient(90deg, #34495e, #7f8c8d, #90a4ae); }
.cat-sage { background: linear-gradient(90deg, #d4a843, #e8c97a, #f0d88a); }
.cat-general { background: linear-gradient(90deg, #8e44ad, #9b59b6, #ab47bc); }
.cat-diplomat { background: linear-gradient(90deg, #00838f, #0097a7, #00bcd4); }
.cat-inventor { background: linear-gradient(90deg, #27ae60, #2ecc71, #66bb6a); }

/* 高亮 */
.person-row.highlighted .person-bar {
  filter: brightness(1.5);
  box-shadow: 0 0 14px currentColor, 0 0 4px currentColor;
}
.person-row.dimmed { opacity: 0.15; }
.person-row.search-match .person-bar {
  box-shadow: 0 0 16px var(--accent), 0 0 4px var(--accent);
  filter: brightness(1.4);
}

/* ===== 详情面板 ===== */
.panel {
  position: fixed;
  right: 0; top: var(--header-h);
  bottom: 0;
  width: var(--panel-w);
  background: rgba(19,26,42,0.96);
  border-left: 1px solid var(--border);
  z-index: 400;
  overflow-y: auto;
  padding: 28px 24px;
  transform: translateX(0);
  transition: transform 0.35s cubic-bezier(.4,0,.2,1);
  box-shadow: -8px 0 48px rgba(0,0,0,0.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.panel.hidden { transform: translateX(var(--panel-w)); }
.panel::-webkit-scrollbar { width: 4px; background: transparent; }
.panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.panel-close {
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text3);
  cursor: pointer;
  font-size: 14px;
  transition: all var(--transition);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.panel-close:hover {
  background: rgba(192,57,43,0.2);
  color: #e74c3c;
  border-color: rgba(192,57,43,0.4);
  transform: rotate(90deg);
}

/* 面板头部操作栏 */
.panel-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  margin-bottom: 8px;
}
.panel-edit-btn {
  padding: 5px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  font-size: 12px;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.panel-edit-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(212,168,67,0.08);
}
.panel-edit-btn.editing {
  background: var(--accent);
  color: #0b0f19;
  border-color: var(--accent);
  font-weight: 600;
}
.panel-delete-btn {
  padding: 5px 14px;
  border-radius: 16px;
  border: 1px solid rgba(231,76,60,0.3);
  background: transparent;
  color: #e74c3c;
  cursor: pointer;
  font-size: 12px;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  opacity: 0.7;
}
.panel-delete-btn:hover {
  border-color: #e74c3c;
  background: rgba(231,76,60,0.12);
  opacity: 1;
}
.delete-confirm-btn {
  background: linear-gradient(135deg, #e74c3c, #c0392b);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.delete-confirm-btn:hover {
  box-shadow: 0 4px 12px rgba(231,76,60,0.35);
  transform: translateY(-1px);
}

/* 编辑操作按钮 */
.panel-edit-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.panel-edit-actions.hidden { display: none; }
.edit-save-btn {
  flex: 1;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #0b0f19;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.edit-save-btn:hover {
  filter: brightness(1.15);
  box-shadow: 0 0 16px rgba(212,168,67,0.4);
  transform: translateY(-1px);
}
.edit-cancel-btn {
  flex: 1;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.edit-cancel-btn:hover {
  border-color: #e74c3c;
  color: #e74c3c;
  background: rgba(231,76,60,0.08);
}

/* 编辑输入框 */
.edit-input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  padding: 6px 10px;
  outline: none;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  width: 100%;
}
.edit-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}
.edit-name {
  font-size: 20px;
  font-weight: 700;
  text-align: center;
  background: transparent;
  border: none;
  border-bottom: 2px dashed var(--border);
  border-radius: 0;
  padding: 4px 8px;
  color: var(--accent);
}
.edit-name:focus {
  border-bottom-color: var(--accent);
  box-shadow: none;
}
.edit-textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  padding: 10px 12px;
  outline: none;
  resize: vertical;
  width: 100%;
  min-height: 80px;
  line-height: 1.8;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  transition: all var(--transition);
}
.edit-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}
.edit-dates {
  display: flex;
  gap: 12px;
  margin: 8px 0;
  justify-content: center;
  align-items: center;
  font-size: 12px;
  color: var(--text3);
}
.edit-dates label {
  display: flex;
  align-items: center;
  gap: 4px;
}
.edit-dates .edit-input {
  width: 80px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.edit-dynasty-select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 11px;
  padding: 3px 8px;
  outline: none;
  cursor: pointer;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  appearance: none;
  -webkit-appearance: none;
  transition: all var(--transition);
}
.edit-dynasty-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}
.edit-dynasty-select option {
  background: var(--bg2);
  color: var(--text);
}

/* 编辑成就 */
.edit-achievement-item {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-bottom: 6px;
}
.edit-achievement-item .edit-input {
  flex: 1;
}
.edit-remove-btn {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text3);
  cursor: pointer;
  font-size: 11px;
  transition: all var(--transition);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.edit-remove-btn:hover {
  background: rgba(231,76,60,0.15);
  color: #e74c3c;
  border-color: rgba(231,76,60,0.4);
}
.edit-add-btn {
  padding: 5px 14px;
  border-radius: 16px;
  border: 1px dashed var(--border);
  background: transparent;
  color: var(--text3);
  cursor: pointer;
  font-size: 12px;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  margin-top: 4px;
}
.edit-add-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(212,168,67,0.05);
}

.panel-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 36px;
  margin: 0 auto 16px;
  border: 2px solid;
  box-shadow: 0 0 20px rgba(0,0,0,0.3);
  transition: box-shadow 0.3s;
}
.panel-avatar:hover {
  box-shadow: 0 0 30px rgba(212,168,67,0.3);
}
.panel-name {
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.panel-meta {
  text-align: center;
  font-size: 12px;
  color: var(--text3);
  margin-bottom: 20px;
  line-height: 1.8;
}
.panel-meta .tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--bg3);
  border: 1px solid var(--border);
  margin: 2px;
  font-size: 11px;
  color: var(--text2);
  transition: all var(--transition);
}
.panel-meta .tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.lifespan-tag {
  display: inline-block;
  padding: 5px 16px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(212,168,67,0.2), rgba(212,168,67,0.08));
  border: 1px solid rgba(212,168,67,0.4);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  margin-top: 8px;
  letter-spacing: 0.05em;
}
.panel-desc {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.9;
  margin-bottom: 22px;
  padding: 14px;
  background: var(--bg3);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.panel-section { margin-bottom: 18px; }
.panel-section-title {
  font-size: 12px;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}
.panel-achievements { display: flex; flex-wrap: wrap; gap: 6px; }
.achievement-tag {
  padding: 5px 12px;
  border-radius: 16px;
  background: rgba(212,168,67,0.1);
  border: 1px solid rgba(212,168,67,0.25);
  color: var(--accent);
  font-size: 12px;
  transition: all var(--transition);
}
.achievement-tag:hover {
  background: rgba(212,168,67,0.2);
  border-color: rgba(212,168,67,0.5);
  transform: translateY(-1px);
}
.panel-relations { display: flex; flex-direction: column; gap: 6px; }
.relation-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  background: var(--bg3);
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
}
.relation-item:hover {
  background: var(--bg4);
  border-color: var(--border);
  transform: translateX(4px);
}
.relation-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px;
  flex-shrink: 0;
}
.relation-info { flex: 1; min-width: 0; }
.relation-name { font-size: 13px; color: var(--text); font-weight: 500; }
.relation-type { font-size: 11px; color: var(--text3); }
.panel-events { display: flex; flex-direction: column; gap: 6px; }
.event-item {
  display: flex;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  background: var(--bg3);
  border-left: 3px solid var(--accent);
  transition: all var(--transition);
}
.event-item:hover {
  background: var(--bg4);
  transform: translateX(2px);
}
.event-year { font-size: 11px; color: var(--accent); font-weight: 600; white-space: nowrap; min-width: 48px; }
.event-text { font-size: 12px; color: var(--text2); line-height: 1.6; }

/* ===== 事件气泡 ===== */
.tooltip {
  position: fixed;
  z-index: 500;
  background: rgba(19,26,42,0.96);
  border: 1px solid var(--border2);
  border-radius: 12px;
  padding: 14px 16px;
  max-width: 240px;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  transition: opacity 0.15s;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.tooltip.hidden { opacity: 0; }
.tooltip-title { font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.tooltip-year { font-size: 12px; color: var(--accent); margin-bottom: 8px; font-weight: 500; }
.tooltip-desc { font-size: 12px; color: var(--text2); line-height: 1.7; }

/* ===== 关系图视图 ===== */
#graphView {
  width: 100%; height: 100%;
  position: relative;
  background: radial-gradient(ellipse at center, #151d30 0%, #0b0f19 100%);
}
#graphCanvas { width: 100%; height: 100%; cursor: grab; }
#graphCanvas:active { cursor: grabbing; }
#graphInfo {
  position: absolute;
  bottom: 20px; left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  color: var(--text3);
  background: rgba(11,15,25,0.7);
  padding: 8px 20px;
  border-radius: 24px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  white-space: nowrap;
  z-index: 10;
}
.graph-controls {
  position: absolute;
  bottom: 56px; left: 50%;
  transform: translateX(-50%);
  background: rgba(11,15,25,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-lg);
}
.graph-filter-row {
  display: flex;
  align-items: center;
  gap: 16px;
}
.graph-dynasty-select,
.graph-rel-select {
  display: flex;
  align-items: center;
  gap: 6px;
}
.graph-dynasty-select label,
.graph-rel-select label {
  font-size: 12px;
  color: var(--text2);
  white-space: nowrap;
  font-weight: 500;
}
.graph-dynasty-select select,
.graph-rel-select select {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 12px;
  padding: 5px 24px 5px 10px;
  outline: none;
  cursor: pointer;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b949e' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 6px center;
  transition: all var(--transition);
  max-width: 140px;
}
.graph-dynasty-select select:hover,
.graph-rel-select select:hover {
  border-color: var(--accent);
}
.graph-dynasty-select select:focus,
.graph-rel-select select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}
.graph-dynasty-select select option,
.graph-rel-select select option {
  background: var(--bg2);
  color: var(--text);
}
.graph-legend {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.graph-rel-legend {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  padding-top: 4px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.graph-rel-legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  color: var(--text3);
}
.graph-rel-legend-line {
  width: 18px;
  height: 2px;
  border-radius: 1px;
  flex-shrink: 0;
}

/* ===== 地图视图 ===== */
#mapView {
  width: 100%; height: 100%;
  position: relative;
}
#leafletMap {
  width: 100%;
  height: 100%;
  z-index: 1;
}
/* Leaflet 深色主题覆盖 */
.leaflet-container {
  background: #080d18;
}
.leaflet-control-zoom a {
  background: rgba(11,15,25,0.92) !important;
  color: var(--text2) !important;
  border-color: var(--border) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.leaflet-control-zoom a:hover {
  background: var(--bg3) !important;
  color: var(--accent) !important;
}
.leaflet-control-attribution {
  background: rgba(11,15,25,0.7) !important;
  color: var(--text3) !important;
  font-size: 9px !important;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.leaflet-control-attribution a {
  color: var(--text3) !important;
}
/* 自定义 Marker */
.custom-marker {
  background: none !important;
  border: none !important;
}
.custom-marker div > div:first-child:hover {
  transform: scale(1.25);
  box-shadow: 0 0 20px rgba(255,255,255,0.2) !important;
}
/* 自定义 Popup */
.custom-popup .leaflet-popup-content-wrapper {
  background: rgba(19,26,42,0.96);
  border: 1px solid var(--border2);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 0;
}
.custom-popup .leaflet-popup-content {
  margin: 0;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.custom-popup .leaflet-popup-tip {
  background: rgba(19,26,42,0.96);
  border: 1px solid var(--border2);
  box-shadow: none;
}
.custom-popup .leaflet-popup-close-button {
  color: var(--text3) !important;
  font-size: 18px !important;
  top: 6px !important;
  right: 8px !important;
}
.custom-popup .leaflet-popup-close-button:hover {
  color: var(--accent) !important;
}
.map-popup {
  padding: 12px 16px;
}
.map-popup-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}
.map-popup-meta {
  font-size: 11px;
  color: var(--text3);
  margin-bottom: 4px;
  line-height: 1.5;
}
/* 朝代信息浮层 */
.map-dynasty-info {
  background: rgba(11,15,25,0.92);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 16px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.map-controls {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(11,15,25,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow-lg);
}
.map-filter-row {
  display: flex;
  align-items: center;
  gap: 20px;
}
.map-dynasty-select {
  display: flex;
  align-items: center;
  gap: 8px;
}
.map-dynasty-select label {
  font-size: 12px;
  color: var(--text2);
  white-space: nowrap;
  font-weight: 500;
}
.map-dynasty-select select {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 12px;
  padding: 6px 28px 6px 12px;
  outline: none;
  cursor: pointer;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b949e' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  transition: all var(--transition);
  max-width: 160px;
}
.map-dynasty-select select:hover {
  border-color: var(--accent);
}
.map-dynasty-select select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}
.map-dynasty-select select option {
  background: var(--bg2);
  color: var(--text);
  padding: 4px 8px;
}
.map-year-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
#mapYearLabel {
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  min-width: 140px;
  text-align: center;
}
#mapYearSlider {
  width: 220px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
#mapYearSlider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: 0 0 8px rgba(212,168,67,0.4);
  transition: transform 0.15s;
}
#mapYearSlider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}
.map-legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text2);
}
.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 4px currentColor;
}

/* ===== 统计信息栏 ===== */
.stats-bar {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 300;
  display: flex;
  gap: 12px;
  font-size: 11px;
  color: var(--text3);
}
.stat-item {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  background: rgba(11,15,25,0.8);
  border-radius: 12px;
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.stat-value {
  color: var(--accent);
  font-weight: 600;
}

/* ===== 背景装饰 ===== */
.bg-deco {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 600px 400px at 10% 30%, rgba(212,168,67,0.03) 0%, transparent 70%),
    radial-gradient(ellipse 400px 600px at 90% 70%, rgba(41,128,185,0.03) 0%, transparent 70%),
    radial-gradient(ellipse 300px 300px at 50% 50%, rgba(26,188,156,0.02) 0%, transparent 70%);
}

/* ===== 快捷键提示 ===== */
.keyboard-hint {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  font-size: 11px;
  color: var(--text3);
  background: rgba(11,15,25,0.8);
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0.6;
  transition: opacity 0.3s;
}
.keyboard-hint:hover { opacity: 1; }
.keyboard-hint kbd {
  display: inline-block;
  padding: 1px 6px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 10px;
  font-family: monospace;
  color: var(--text2);
  margin: 0 2px;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  :root { --panel-w: 100vw; }
  .logo-text { display: none; }
  .header-center { display: none; }
  .search-box input { width: 140px; }
  .search-box input:focus { width: 180px; }
  .stats-bar { display: none; }
  .keyboard-hint { display: none; }
  .zoom-level { display: none; }
  .map-controls { padding: 10px 16px; gap: 16px; }
  #mapYearSlider { width: 150px; }
}

/* ===== 搜索高亮 ===== */
.search-highlight {
  outline: 2px solid var(--accent) !important;
  animation: searchPulse 0.8s ease-in-out;
}
@keyframes searchPulse {
  0% { box-shadow: 0 0 0 0 rgba(212,168,67,0.5); }
  70% { box-shadow: 0 0 0 12px rgba(212,168,67,0); }
  100% { box-shadow: 0 0 0 0 rgba(212,168,67,0); }
}

/* ===== 视图切换动画 ===== */
#timelineView, #graphView, #mapView {
  animation: fadeIn 0.3s ease-out;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ===== 加载动画 ===== */
.loading-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== 滚动条（Windows） ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text3); }

/* ===== 添加人物按钮 ===== */
.btn-add-person {
  background: linear-gradient(135deg, var(--accent), #c9952a);
  color: #0b0f19;
  border: none;
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  box-shadow: 0 2px 8px rgba(212,168,67,0.25);
}
.btn-add-person:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(212,168,67,0.4);
}
.btn-add-person:active {
  transform: translateY(0);
}

/* ===== 添加人物弹窗 ===== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease-out;
}
.modal-overlay.hidden { display: none; }
.modal-content {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 16px;
  width: 560px;
  max-width: 92vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 16px 64px rgba(0,0,0,0.5);
  overflow: hidden;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg3);
}
.modal-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}
.modal-close {
  background: none;
  border: none;
  color: var(--text3);
  font-size: 18px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all var(--transition);
}
.modal-close:hover {
  color: var(--accent);
  background: rgba(255,255,255,0.05);
}
.modal-body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg3);
}

/* 表单样式 */
.form-row {
  margin-bottom: 16px;
}
.form-row label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text2);
  margin-bottom: 6px;
}
.form-row label .required {
  color: #e74c3c;
}
.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 12px;
  align-items: end;
}
.form-input {
  width: 100%;
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  box-sizing: border-box;
}
.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}
.form-input-short {
  width: 80px;
}
.form-select {
  width: 100%;
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 28px 8px 12px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  cursor: pointer;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b949e' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  transition: all var(--transition);
  box-sizing: border-box;
}
.form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}
.form-select option {
  background: var(--bg2);
  color: var(--text);
}
.form-textarea {
  width: 100%;
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  resize: vertical;
  line-height: 1.6;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  box-sizing: border-box;
}
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}
.form-static {
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
  padding: 8px 0;
  min-width: 60px;
  text-align: center;
}
.form-achievements {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 8px;
}
.form-achievement-item {
  display: flex;
  align-items: center;
  gap: 8px;
}
.form-achievement-item .form-input {
  flex: 1;
}
.form-achievement-remove {
  background: none;
  border: 1px solid rgba(231,76,60,0.3);
  color: #e74c3c;
  border-radius: 6px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 12px;
  transition: all var(--transition);
  flex-shrink: 0;
}
.form-achievement-remove:hover {
  background: rgba(231,76,60,0.15);
  border-color: #e74c3c;
}
.form-relations {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 8px;
}
.form-relation-item {
  display: flex;
  align-items: center;
  gap: 8px;
}
.form-relation-item .form-select {
  width: 180px;
  flex-shrink: 0;
}

/* ===== Toast 提示 ===== */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: rgba(46,204,113,0.95);
  color: #fff;
  padding: 10px 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  z-index: 3000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(46,204,113,0.3);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== 响应式弹窗 ===== */
@media (max-width: 768px) {
  .modal-content {
    max-width: 98vw;
    max-height: 90vh;
  }
  .form-row-2, .form-row-3 {
    grid-template-columns: 1fr;
  }
  .btn-add-person {
    padding: 6px 10px;
    font-size: 11px;
  }
  .form-relation-item {
    flex-wrap: wrap;
  }
  .form-relation-item .form-select {
    width: 100%;
  }
}

/* ===== 步骤指示器 ===== */
.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 24px 8px;
  gap: 0;
  background: var(--bg3);
}
.step-dot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  opacity: 0.4;
  transition: all 0.3s ease;
}
.step-dot.active {
  opacity: 1;
}
.step-dot.current {
  opacity: 1;
}
.step-dot span {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  background: var(--border);
  color: var(--text3);
  transition: all 0.3s ease;
}
.step-dot.active span {
  background: var(--accent);
  color: #0b0f19;
}
.step-dot.current span {
  background: var(--accent);
  color: #0b0f19;
  box-shadow: 0 0 0 4px rgba(212,168,67,0.25);
}
.step-dot small {
  font-size: 10px;
  color: var(--text3);
  white-space: nowrap;
}
.step-dot.active small {
  color: var(--text2);
}
.step-line {
  width: 48px;
  height: 2px;
  background: var(--border);
  margin: 0 4px;
  margin-bottom: 16px;
  border-radius: 1px;
  transition: background 0.3s ease;
}
.step-dot.active + .step-line,
.step-line:has(+ .step-dot.active) {
  background: var(--accent);
}

/* ===== 步骤面板 ===== */
.step-panel {
  display: none;
}
.step-panel.active {
  display: block;
}
.step-hint {
  font-size: 13px;
  color: var(--text3);
  margin: 0 0 16px;
  padding: 10px 14px;
  background: rgba(212,168,67,0.08);
  border-radius: 8px;
  border-left: 3px solid var(--accent);
}

/* ===== 步骤按钮 ===== */
.step-next-btn {
  background: linear-gradient(135deg, var(--accent), #c9952a);
  color: #0b0f19;
  border: none;
  border-radius: 8px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.step-next-btn:hover {
  box-shadow: 0 4px 12px rgba(212,168,67,0.35);
  transform: translateY(-1px);
}
.step-prev-btn {
  background: var(--bg4);
  color: var(--text2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.step-prev-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== 新板块通用 ===== */
.main-section {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
  min-height: 300px;
}
.section-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

/* 世界史时间轴 */
#worldTimelineWrapper {
  position: relative;
  height: 260px;
  overflow-x: auto;
  overflow-y: hidden;
  border-radius: 8px;
  background: var(--bg2);
}
#worldTimelineWrapper .dynasty-bands {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}
#worldTimelineWrapper .axis-line {
  position: absolute;
  top: 50%; left: 0;
  width: 100%; height: 2px;
  background: var(--axis);
}
#worldEventsAbove, #worldEventsBelow {
  position: absolute;
  left: 0;
  width: 100%;
  pointer-events: auto;
}
#worldEventsAbove { top: 10%; }
#worldEventsBelow { bottom: 10%; }
.world-event {
  position: absolute;
  cursor: pointer;
  transition: transform 0.15s;
}
.world-event:hover {
  transform: translate(-50%, -50%) scale(1.08);
}

/* 事件详情 */
.event-detail-content {
  color: var(--text);
  line-height: 1.8;
}
.event-hint {
  color: var(--text3);
  text-align: center;
  padding: 40px 0;
  font-size: 14px;
}

/* 人物关系 */
.relation-content {
  color: var(--text);
}
.relation-hint {
  color: var(--text3);
  text-align: center;
  padding: 40px 0;
  font-size: 14px;
}

/* 板块切换标签 */
.section-tabs {
  display: flex;
  gap: 6px;
  padding: 0 16px;
}
.btn-section {
  background: var(--bg3);
  color: var(--text2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn-section:hover {
  background: var(--bg4);
  color: var(--text);
}
.btn-section.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}


/* ===== 双时间轴布局 ===== */
#dualTimelineContainer {
  display: flex;
  flex-direction: column;
  width: max-content;
  min-width: 100%;
  height: 100%;
}

.timeline-block {
  flex: 1 1 auto;
  min-height: 200px;
  position: relative;
  border-bottom: 1px solid var(--border);
}
/* 高度比例 中国:日本:世界:朝鲜 = 5:3:2:2 */
#chinaBlock { flex: 5; }
#japanBlock { flex: 3; }
#worldBlock { flex: 2; }
#koreaBlock { flex: 2; }
.timeline-block:last-child {
  border-bottom: none;
}

.block-header {
  height: 36px;
  display: flex;
  align-items: center;
  padding: 0 16px;
  background: rgba(11,15,25,0.95);
  border-bottom: 1px solid var(--border);
  gap: 12px;
  flex-shrink: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  will-change: transform;
}
.block-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}
.header-hint {
  font-size: 12px;
  color: var(--text3);
  margin-left: auto;
}

/* 折叠按钮 */
.btn-collapse {
  background: none; border: 1px solid var(--border); color: var(--text2);
  width: 28px; height: 28px; border-radius: 6px; cursor: pointer;
  font-size: 12px; display: flex; align-items: center; justify-content: center;
  transition: all 0.2s; flex-shrink: 0;
}
.btn-collapse:hover { background: var(--bg4); color: var(--accent); border-color: var(--accent-dim); }
.timeline-block.collapsed .btn-collapse { transform: rotate(180deg); }
.timeline-block.collapsed > :not(.block-header) { display: none !important; }
.timeline-block.collapsed { flex: 0 0 auto !important; min-height: 0 !important; }

/* 拉宽手柄 */
.resize-handle {
  height: 6px; background: var(--border); cursor: row-resize;
  transition: background 0.2s, height 0.15s; flex-shrink: 0;
  position: relative; z-index: 10;
}
.resize-handle:hover, .resize-handle.active {
  background: var(--accent); height: 8px;
}
.resize-handle::after {
  content: ''; position: absolute; top: -4px; left: 0; right: 0; bottom: -4px;
}

#timelineWrapper,
#japanTimelineWrapper,
#worldTimelineWrapper,
#koreaTimelineWrapper {
  position: relative;
  width: 100%;
  height: calc(100% - 36px);
  overflow-x: hidden;
  overflow-y: auto;
}

#personsAbove, #personsBelow,
#japanPersonsAbove, #japanPersonsBelow,
#worldPersonsAbove, #worldPersonsBelow,
#koreaPersonsAbove, #koreaPersonsBelow { position: absolute; left: 0; width: 100%; }

#japanEventsAbove, #japanEventsBelow,
#worldEventsAbove, #worldEventsBelow,
#koreaEventsAbove, #koreaEventsBelow {
  position: absolute;
  left: 0;
  width: 100%;
  pointer-events: none;
}

#japanEventsAbove, #worldEventsAbove, #koreaEventsAbove { top: 0; }
#japanEventsBelow, #worldEventsBelow, #koreaEventsBelow { top: 50%; }