/* ════════════════════════════════════════════════════════════════════
   AI-Novel-System —— 主样式表
   ════════════════════════════════════════════════════════════════════

   【v7.0 架构变更 · 设计令牌单一来源】
   原先本文件与 themes.css 各自定义了一整套 :root 色板，同名 token
   相互覆盖（52 个里冲突 27 个），且 themes.css 加载在后因而实际生效，
   造成 DESIGN.md 记载的规范从未真正落地 —— 这是「配色不行、风格不
   统一」的根源。

   现在：
   · 所有设计令牌（颜色/字体/圆角/间距/阴影/动效）统一由 **tokens.css**
     定义，且它在 index.html 中最先加载。
   · 本文件**不再声明任何令牌**，只消费 var(--token)。
   · themes.css 同样不再声明令牌，只保留结构样式。

   下方保留 font-family 的 @import 仅供 Inter/JetBrains Mono 在
   西文环境回退，中文一律走系统字体（见 tokens.css 的 --font-sans）。
   ════════════════════════════════════════════════════════════════════ */

/* 西文字体增强（可选）：Inter 对中文字符无效，中文仍走系统字体栈。
   保留此 import 是为让拉丁字母与数字更整齐；若网络不可用会自动回退。 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* 令牌定义已迁移至 tokens.css —— 此处不再重复声明，避免覆盖冲突。
   若需调整色板/字体/圆角，请修改 public/css/tokens.css。 */

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

html {
  font-size: var(--fs-lg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--canvas);
  color: var(--text-primary);
  line-height: 1.6;
  overflow: hidden;
  /* P0 修复：移除 letter-spacing:-0.01em。
     负字距是为西文 x-height 设计的（拉丁小写墨迹仅占 0.50em），
     中文是满字身方块字（墨迹占 0.90em），负字距会导致笔画相互侵入。 */
}

.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
}

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--canvas-dark);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-height: 100vh;
  flex-shrink: 0;
  overflow: hidden;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: var(--rounded-full);
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--border-strong);
}

.logo-section {
  padding: var(--spacing-xl) var(--spacing-lg);
  background: linear-gradient(135deg, rgba(255, 197, 61, 0.08) 0%, rgba(255, 139, 92, 0.05) 100%);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

.logo-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 197, 61, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.logo-section h1 {
  font-size: var(--fs-xl);
  font-weight: 700;
  /* P0 修复：原 letter-spacing:-0.02em 移除（同上） */
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  position: relative;
  z-index: 1;
}

.subtitle {
  font-size: var(--fs-base);
  font-weight: 400;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}

.main-nav {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-md) var(--spacing-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.nav-section h3 {
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  padding: 0 var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: 10px var(--spacing-md);
  border-radius: var(--rounded-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--fs-md);
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
}

.nav-item .icon {
  font-size: var(--fs-xl);
  width: 20px;
  text-align: center;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.nav-item:hover {
  background: var(--surface-1);
  color: var(--text-primary);
}

.nav-item:hover .icon {
  opacity: 1;
}

.nav-item.active {
  background: rgba(255, 197, 61, 0.1);
  color: var(--primary-text);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--primary);
  border-radius: var(--rounded-full);
}

.nav-item.active .icon {
  opacity: 1;
}

.sidebar-footer {
  padding: var(--spacing-lg) var(--spacing-md);
  border-top: 1px solid var(--border-subtle);
}

.model-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--fs-base);
  color: var(--text-secondary);
  font-weight: 500;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: pulse-glow 2s infinite;
}

.status-indicator.online {
  background: var(--semantic-success);
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
}

.status-indicator.offline {
  background: var(--semantic-error);
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.5);
  animation: none;
}

@keyframes pulse-glow {
  0%, 100% { 
    opacity: 1;
    box-shadow: 0 0 8px currentColor;
  }
  50% { 
    opacity: 0.7;
    box-shadow: 0 0 4px currentColor;
  }
}

/* ===== MAIN CONTENT ===== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--canvas);
}

/* ===== TOP BAR ===== */
.top-bar {
  height: var(--topbar-height);
  background: var(--canvas);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-xl);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.breadcrumb {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--text-primary);
  /* P0 修复：原 letter-spacing:-0.01em 移除（中文满字身，负字距致笔画侵入） */
}

.top-actions {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 9px 16px;
  border: none;
  border-radius: var(--rounded-md);
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(255,255,255,0.05), transparent);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: var(--shadow-sm), 0 0 0 0 transparent;
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-primary:active {
  background: var(--primary-pressed);
  transform: translateY(0);
}

.btn-secondary {
  background: var(--surface-1);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}

.btn-secondary:hover {
  background: var(--surface-2);
  border-color: var(--border-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  background: transparent;
  color: var(--primary-text);
  border: 1px solid var(--primary);
}

.btn-outline:hover {
  background: rgba(255, 197, 61, 0.08);
  box-shadow: var(--shadow-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: var(--spacing-sm);
}

.btn-ghost:hover {
  background: var(--surface-1);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--semantic-error);
  color: white;
}

.btn-danger:hover {
  background: #dc2626;
  box-shadow: 0 0 16px rgba(239, 68, 68, 0.3);
}

.btn-icon {
  padding: var(--spacing-sm);
  background: transparent;
  border: none;
  font-size: var(--fs-xl);
  cursor: pointer;
  border-radius: var(--rounded-md);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  background: var(--surface-1);
  color: var(--text-primary);
  transform: none;
}

.btn-small {
  padding: 6px 12px;
  font-size: var(--fs-base);
}

.btn-large {
  padding: 12px 28px;
  font-size: var(--fs-md);
  font-weight: 600;
}

/* ===== CONTENT AREA ===== */
.content-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-xl);
}

.content-area::-webkit-scrollbar {
  width: 8px;
}

.content-area::-webkit-scrollbar-track {
  background: transparent;
}

.content-area::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: var(--rounded-full);
}

.content-area::-webkit-scrollbar-thumb:hover {
  background: var(--border-strong);
}

.page {
  display: none;
  animation: fadeSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.page.active {
  display: block;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== WRITER CONTAINER (AI Page) ===== */
.writer-container {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--spacing-xl);
  height: calc(100vh - calc(var(--topbar-height) + var(--spacing-xl) * 2));
}

.writer-sidebar {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xl);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.writer-sidebar h3 {
  font-size: var(--fs-base);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

.mode-selector {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.mode-btn {
  padding: 12px 16px;
  background: var(--canvas);
  border: 1px solid var(--border-default);
  border-radius: var(--rounded-md);
  text-align: left;
  font-size: var(--fs-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  font-family: var(--font-sans);
}

.mode-btn:hover {
  background: var(--surface-2);
  border-color: var(--border-strong);
  color: var(--text-primary);
  transform: translateX(2px);
}

.mode-btn.active {
  background: linear-gradient(135deg, rgba(255, 197, 61, 0.12) 0%, rgba(255, 139, 92, 0.08) 100%);
  border-color: var(--primary);
  color: var(--primary-text);
  font-weight: 600;
  box-shadow: inset 0 0 0 1px rgba(255, 197, 61, 0.1);
}

.settings-panel,
.quick-prompts {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.setting-group label {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.setting-group input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
  height: 4px;
  border-radius: var(--rounded-full);
}

.value-display {
  float: right;
  font-weight: 600;
  color: var(--primary-text);
  font-size: var(--fs-base);
  font-family: var(--font-mono);
}

.setting-group select {
  width: 100%;
  padding: 10px 12px;
  background: var(--canvas);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--rounded-md);
  font-size: var(--fs-md);
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.setting-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 197, 61, 0.1);
}

.prompt-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.prompt-tag {
  padding: 6px 12px;
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-full);
  font-size: var(--fs-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  font-family: var(--font-sans);
}

.prompt-tag:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: scale(1.02);
  box-shadow: var(--shadow-glow);
}

/* ===== WRITER MAIN AREA ===== */
.writer-main {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  height: 100%;
}

.context-input textarea,
.prompt-input-area textarea {
  width: 100%;
  padding: var(--spacing-lg);
  background: var(--surface-1);
  border: 1px solid var(--border-default);
  border-radius: var(--rounded-lg);
  color: var(--text-primary);
  font-size: var(--fs-md);
  line-height: 1.6;
  resize: vertical;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.context-input textarea:focus,
.prompt-input-area textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 197, 61, 0.1), var(--shadow-md);
  background: var(--surface-2);
}

.context-input textarea::placeholder,
.prompt-input-area textarea::placeholder {
  color: var(--text-dim);
}

.input-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}

/* ===== OUTPUT AREA ===== */
.output-area {
  flex: 1;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--primary);
  border-radius: var(--rounded-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  min-height: 300px;
}

.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--surface-2);
}

.output-header h3 {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--text-primary);
  /* P0 修复：原 letter-spacing:-0.01em 移除（中文满字身，负字距致笔画侵入） */
}

.output-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.output-content {
  flex: 1;
  padding: var(--spacing-xl);
  overflow-y: auto;
  line-height: 1.8;
  font-size: var(--fs-md);
  white-space: pre-wrap;
  word-wrap: break-word;
  font-family: var(--font-serif);
  color: var(--text-secondary);
}

.output-content::-webkit-scrollbar {
  width: 6px;
}

.output-content::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: var(--rounded-full);
}

.placeholder-text {
  color: var(--text-dim);
  text-align: center;
  padding: 60px 20px;
  font-style: italic;
  font-family: var(--font-sans);
  font-size: var(--fs-md);
}

.output-stats {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-md) var(--spacing-xl);
  border-top: 1px solid var(--border-subtle);
  background: var(--surface-2);
  font-size: var(--fs-sm);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: 500;
}

/* ===== EDITOR (Writing Page) ===== */
.editor-container {
  height: calc(100vh - calc(var(--topbar-height) + var(--spacing-xl) * 2));
  display: flex;
  flex-direction: column;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.editor-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--surface-2);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.chapter-info {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: wrap;
}

.chapter-info input[type="text"] {
  padding: 8px 12px;
  background: var(--canvas);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--rounded-md);
  font-size: var(--fs-md);
  font-family: var(--font-sans);
  min-width: 80px;
  transition: all var(--transition-fast);
}

.chapter-info input[type="text"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 197, 61, 0.1);
}

.toolbar-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.editor-textarea {
  flex: 1;
  padding: var(--spacing-xxl);
  border: none;
  resize: none;
  font-size: var(--fs-lg);
  line-height: 2;
  background: var(--canvas);
  color: var(--text-primary);
  font-family: var(--font-serif);
  transition: background var(--transition-base);
}

.editor-textarea:focus {
  outline: none;
  background: var(--canvas);
}

.editor-textarea::placeholder {
  color: var(--text-dim);
  font-family: var(--font-sans);
}

.editor-statusbar {
  display: flex;
  gap: var(--spacing-xl);
  padding: var(--spacing-md) var(--spacing-xl);
  border-top: 1px solid var(--border-subtle);
  background: var(--surface-2);
  font-size: var(--fs-sm);
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ===== PLACEHOLDER PAGES ===== */
.placeholder-page {
  text-align: center;
  padding: 80px 20px;
}

.placeholder-page h2 {
  font-size: var(--fs-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  /* P0 修复：原 letter-spacing:-0.02em 移除（同上） */
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.placeholder-page p {
  font-size: var(--fs-lg);
  color: var(--text-muted);
  margin-bottom: var(--spacing-xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.project-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.list-container {
  margin-top: var(--spacing-xl);
  max-height: 500px;
  overflow-y: auto;
  text-align: left;
}

/* ===== INPUT SMALL ===== */
.input-small {
  width: 64px;
  padding: 8px 10px;
  background: var(--canvas);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--rounded-md);
  font-size: var(--fs-base);
  font-family: var(--font-sans);
  text-align: center;
}

.input-small:focus {
  outline: none;
  border-color: var(--primary);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1280px) {
  .writer-container {
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-lg);
  }
  
  :root {
    --sidebar-width: 260px;
  }
}

@media (max-width: 1024px) {
  .app-container {
    flex-direction: column;
  }
  
  .sidebar {
    width: 100%;
    height: auto;
    max-height: 200px;
    order: 2;
  }
  
  .main-nav {
    flex-direction: row;
    overflow-x: auto;
    padding: var(--spacing-sm);
    gap: var(--spacing-sm);
  }
  
  .nav-section {
    margin-bottom: 0;
    margin-right: var(--spacing-lg);
    white-space: nowrap;
  }
  
  .nav-section h3 {
    display: none;
  }
  
  .writer-container {
    grid-template-columns: 1fr;
    height: auto;
  }
  
  .writer-sidebar {
    order: 2;
    max-height: 350px;
  }
  
  .editor-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .chapter-info {
    justify-content: center;
  }
  
  .toolbar-actions {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .content-area {
    padding: var(--spacing-md);
  }
  
  .top-bar {
    padding: 0 var(--spacing-md);
  }
  
  .breadcrumb {
    font-size: var(--fs-md);
  }
  
  .btn-large {
    padding: 10px 20px;
    font-size: var(--fs-md);
  }
  
  .input-actions {
    flex-direction: column;
  }
  
  .input-actions .btn {
    width: 100%;
  }
  
  .placeholder-page h2 {
    font-size: var(--fs-2xl);
  }
  
  .placeholder-page {
    padding: 40px 16px;
  }
}

/* ===== ANIMATIONS & EFFECTS ===== */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.loading-shimmer {
  background: linear-gradient(
    90deg,
    var(--surface-1) 25%,
    var(--surface-2) 50%,
    var(--surface-1) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-default);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--surface-2);
  color: var(--text-primary);
  padding: 14px 24px;
  border-radius: var(--rounded-lg);
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--border-subtle);
  z-index: 10000;
  animation: slideInRight 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  font-size: var(--fs-md);
  font-weight: 500;
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-subtle);
}

.toast.success {
  border-left: 3px solid var(--semantic-success);
}

.toast.error {
  border-left: 3px solid var(--semantic-error);
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 11, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  padding: var(--spacing-xl);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--surface-1);
  background-image: linear-gradient(135deg, rgba(24, 24, 27, 0.98) 0%, rgba(31, 31, 35, 0.98) 100%);
  border-radius: var(--rounded-xl);
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.8),
    0 0 0 1px var(--border-default),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-base);
  border: 1px solid var(--border-default);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal.large {
  max-width: 900px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xl) var(--spacing-xl);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  background: rgba(24, 24, 27, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1;
}

.modal-header h3 {
  font-size: var(--fs-xl);
  font-weight: 600;
  /* P0 修复：原 letter-spacing:-0.01em 移除（中文满字身，负字距致笔画侵入） */
}

.modal-close {
  background: transparent;
  border: none;
  font-size: var(--fs-2xl);
  cursor: pointer;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--rounded-md);
  transition: all var(--transition-fast);
  line-height: 1;
}

.modal-close:hover {
  background: var(--surface-2);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-xl);
  background: rgba(24, 24, 27, 0.95);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  font-size: var(--fs-md);
  /* P0 修复：原 letter-spacing:-0.01em 移除（中文满字身，负字距致笔画侵入） */
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  background: var(--canvas);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--rounded-md);
  font-size: var(--fs-md);
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 197, 61, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
  line-height: 1.6;
}

.form-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-subtle);
}

/* World Building Components */
.wb-toolbar {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  justify-content: center;
  flex-wrap: wrap;
}

.wb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.wb-card {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.wb-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent-purple));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.wb-card:hover {
  background: var(--surface-2);
  border-color: var(--border-default);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.wb-card:hover::before {
  opacity: 1;
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--rounded-lg);
  background: linear-gradient(135deg, var(--primary), var(--accent-purple));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(255, 197, 61, 0.2);
}

.card-title-section h4 {
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: 4px;
  /* P0 修复：原 letter-spacing:-0.01em 移除（中文满字身，负字距致笔画侵入） */
}

.role-badge {
  background: var(--surface-3);
  padding: 4px 10px;
  border-radius: var(--rounded-full);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-muted);
}

.card-body p {
  margin-bottom: var(--spacing-sm);
  font-size: var(--fs-md);
  color: var(--text-secondary);
  line-height: 1.5;
}

.card-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-subtle);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-dim);
  font-size: var(--fs-md);
}

.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--semantic-error);
  padding: var(--spacing-lg);
  border-radius: var(--rounded-md);
  font-size: var(--fs-md);
}

.project-card {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-base);
}

.project-card:hover {
  background: var(--surface-2);
  border-color: var(--border-default);
  transform: translateX(4px);
}

.project-info h4 {
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  /* P0 修复：原 letter-spacing:-0.01em 移除（中文满字身，负字距致笔画侵入） */
}

.project-info p {
  color: var(--text-secondary);
  font-size: var(--fs-md);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.project-meta {
  display: flex;
  gap: var(--spacing-lg);
  font-size: var(--fs-sm);
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.status-badge {
  padding: 4px 12px;
  border-radius: var(--rounded-full);
  font-size: var(--fs-sm);
  font-weight: 600;
}

.status-badge.ongoing {
  background: rgba(59, 130, 246, 0.15);
  color: var(--semantic-info);
}

.status-badge.completed {
  background: rgba(34, 197, 94, 0.15);
  color: var(--semantic-success);
}

.chapter-item {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg) var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-base);
}

.chapter-item:hover {
  background: var(--surface-2);
  border-color: var(--border-default);
}

.chapter-info h4 {
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.chapter-info .word-count,
.chapter-info .date {
  font-size: var(--fs-sm);
  color: var(--text-dim);
  margin-right: var(--spacing-lg);
  font-family: var(--font-mono);
}

.reader-content {
  max-height: 70vh;
  overflow-y: auto;
  line-height: 2;
  font-size: var(--fs-lg);
  padding: var(--spacing-xl);
  font-family: var(--font-serif);
  color: var(--text-secondary);
}

.faction-card {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xl);
  border-left: 3px solid;
  transition: all var(--transition-base);
}

.faction-card:hover {
  background: var(--surface-2);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.faction-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.faction-type {
  background: var(--surface-3);
  padding: 4px 12px;
  border-radius: var(--rounded-full);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-muted);
}

.book-card {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg) var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  transition: all var(--transition-base);
}

.book-card:hover {
  background: var(--surface-2);
  transform: translateY(-2px);
}

.book-icon {
  font-size: var(--fs-3xl);
}

.book-info h5 {
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: 4px;
}

.book-author {
  font-size: var(--fs-base);
  color: var(--text-secondary);
}

.book-category {
  display: inline-block;
  background: var(--surface-3);
  padding: 2px 10px;
  border-radius: var(--rounded-full);
  font-size: var(--fs-sm);
  margin-top: 4px;
  font-weight: 500;
  color: var(--text-muted);
}

/* ========== 模式切换器 ========== */
.mode-switcher {
  display: flex;
  gap: var(--spacing-xs);
  margin: var(--spacing-md) 0;
  background: var(--surface-2);
  padding: var(--spacing-xs);
  border-radius: var(--rounded-lg);
}

.mode-switcher .mode-btn {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--fs-base);
  font-weight: 500;
  border-radius: var(--rounded-md);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.mode-switcher .mode-btn:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

.mode-switcher .mode-btn.active {
  background: var(--primary);
  color: white;
  box-shadow: 0 2px 8px rgba(255, 197, 61, 0.3);
}

/* ========== 项目选择器 ========== */
.project-selector {
  background: var(--surface-2);
  padding: var(--spacing-md);
  border-radius: var(--rounded-md);
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--border-subtle);
}

.project-selector label {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  font-weight: 500;
  display: block;
  margin-bottom: var(--spacing-xs);
}

.project-selector select {
  width: calc(100% - 80px);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--surface-3);
  border: 1px solid var(--border-default);
  border-radius: var(--rounded-sm);
  color: var(--text-primary);
  font-size: var(--fs-base);
  font-family: var(--font-sans);
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s ease;
}

.project-selector select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 197, 61, 0.1);
}

.project-selector button {
  float: right;
  margin-top: 0;
}

/* ========== 工作台页面 ========== */
.dashboard-container {
  max-width: 100% !important;
  width: 100% !important;
  margin: 0 !important;
  padding: var(--spacing-xl);
}

.welcome-section {
  text-align: center;
  padding: var(--spacing-xxl) var(--spacing-xl);
}

.welcome-section h2 {
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.welcome-section .subtitle {
  font-size: var(--fs-lg);
  color: var(--text-muted);
  margin-bottom: var(--spacing-xxl);
}

.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  max-width: 100% !important;
  width: 100% !important;
  margin: 0;
}

.action-card {
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xl);
  text-align: left;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border: none;
  width: 100%;
  color: inherit;
}

.action-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
  border-color: var(--primary);
  background: var(--surface-3);
}

.action-card .icon {
  font-size: 40px;
  margin-bottom: var(--spacing-md);
}

.action-card h3 {
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.action-card p {
  font-size: var(--fs-md);
  color: var(--text-muted);
  line-height: 1.5;
}

/* ========== 项目概览 ========== */
.project-overview {
  animation: fadeInUp 0.5s ease;
}

.overview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.overview-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
}

.project-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--fs-md);
  color: var(--text-secondary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xxl);
}

.stat-card {
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all 0.3s ease;
}

.stat-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.stat-icon {
  font-size: 36px;
  margin-bottom: var(--spacing-sm);
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-text);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--fs-base);
  color: var(--text-muted);
  font-weight: 500;
}

.recent-activity,
.quick-links {
  margin-bottom: var(--spacing-xxl);
}

.recent-activity h3,
.quick-links h3 {
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.activity-list {
  background: var(--surface-2);
  border-radius: var(--rounded-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.activity-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-subtle);
  transition: background 0.2s ease;
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-item:hover {
  background: var(--surface-hover);
}

.activity-icon {
  font-size: 20px;
}

.activity-text {
  flex: 1;
  font-size: var(--fs-md);
  color: var(--text-secondary);
}

.activity-time {
  font-size: var(--fs-sm);
  color: var(--text-dim);
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
}

.link-card {
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-md);
  padding: var(--spacing-lg);
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.link-card:hover {
  border-color: var(--primary);
  background: var(--surface-3);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 197, 61, 0.15);
}

.link-card .icon {
  font-size: var(--fs-2xl);
}

.link-card span:last-child {
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--text-secondary);
}

/* ========== 书架页面 ========== */
.bookshelf-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl);
}

.bookshelf-container h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.bookshelf-container .description {
  color: var(--text-muted);
  margin-bottom: var(--spacing-xxl);
}

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.book-card {
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.book-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
  border-color: var(--primary);
}

.book-cover {
  background: linear-gradient(135deg, var(--primary), var(--accent-purple));
  height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

.book-cover::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.book-cover .book-title {
  font-size: 22px;
  font-weight: 700;
  color: white;
  text-align: center;
  z-index: 1;
  line-height: 1.3;
}

.book-cover .book-genre {
  font-size: var(--fs-base);
  color: rgba(255, 255, 255, 0.9);
  margin-top: var(--spacing-sm);
  z-index: 1;
}

.book-info {
  padding: var(--spacing-lg);
}

.book-info h4 {
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.book-info p {
  font-size: var(--fs-base);
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-meta {
  display: flex;
  justify-content: space-between;
  font-size: var(--fs-sm);
  color: var(--text-dim);
}

.empty-state {
  text-align: center;
  padding: var(--spacing-xxl) * 2;
}

.empty-state .icon {
  font-size: 64px;
  margin-bottom: var(--spacing-lg);
}

.empty-state h3 {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.empty-state p {
  color: var(--text-muted);
  margin-bottom: var(--spacing-xl);
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .quick-actions {
    grid-template-columns: 1fr;
  }
  
  .links-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .overview-header {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .project-meta {
    flex-wrap: wrap;
    justify-content: center;
  }
}

.timeline-events {
  position: relative;
  padding-left: 32px;
}

.timeline-events::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-default);
  border-radius: var(--rounded-full);
}

.timeline-event {
  position: relative;
  margin-bottom: var(--spacing-lg);
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg) var(--spacing-xl);
  transition: all var(--transition-base);
}

.timeline-event:hover {
  background: var(--surface-2);
  border-color: var(--border-default);
  transform: translateX(4px);
}

.timeline-event::before {
  content: '';
  position: absolute;
  left: -26px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--canvas-dark);
  box-shadow: 0 0 0 3px rgba(255, 197, 61, 0.2);
}

.event-time {
  font-weight: 600;
  color: var(--primary-text);
  font-size: var(--fs-base);
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-mono);
}

.event-content h5 {
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.event-content p {
  color: var(--text-secondary);
  font-size: var(--fs-md);
  line-height: 1.5;
}

.event-actions {
  margin-top: var(--spacing-md);
  display: flex;
  gap: var(--spacing-sm);
}

.levels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.level-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--surface-2);
  border-radius: var(--rounded-md);
  transition: all var(--transition-fast);
}

.level-item:hover {
  background: var(--surface-hover);
  transform: translateX(4px);
}

.level-num {
  width: 28px;
  height: 28px;
  border-radius: var(--rounded-md);
  background: linear-gradient(135deg, var(--primary), var(--accent-purple));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-base);
  font-weight: 700;
  flex-shrink: 0;
}

.level-name {
  font-weight: 500;
  font-size: var(--fs-md);
}

.methods-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
}

.method-card {
  background: var(--surface-2);
  border-radius: var(--rounded-md);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.method-card:hover {
  background: var(--surface-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.method-card h5 {
  font-size: var(--fs-md);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.method-card p {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.5;
}

.method-level {
  font-size: var(--fs-sm);
  color: var(--primary-text);
  font-weight: 600;
  font-family: var(--font-mono);
}

.chapter-outline-item {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--surface-2);
  border-radius: var(--rounded-md);
  margin-bottom: var(--spacing-sm);
  transition: all var(--transition-fast);
}

.chapter-outline-item:hover {
  background: var(--surface-hover);
  transform: translateX(4px);
}

.chapter-num {
  font-weight: 700;
  color: var(--primary-text);
  min-width: 64px;
  font-size: var(--fs-md);
}

.wb-section {
  margin-bottom: var(--spacing-xl);
}

.wb-section h4 {
  font-size: var(--fs-md);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  /* P0 修复：原 letter-spacing:-0.01em 移除（中文满字身，负字距致笔画侵入） */
}

.wb-section p {
  color: var(--text-secondary);
  line-height: 1.7;
}

.cultivation-display,
.outline-display,
.factions-grid,
.literature-list,
.timeline-view,
.world-settings-display,
.characters-grid {
  margin-top: var(--spacing-lg);
}

/* 角色设定双栏排版 */
#characters-list {
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  gap: 20px !important;
  align-items: start !important;
  width: 100% !important;
}
@media (max-width: 992px) {
  #characters-list { grid-template-columns: 1fr !important; }
}

.tab-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-md);
  color: var(--text-secondary);
  font-size: var(--fs-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.tracking-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) 0;
}

.tracking-container,
.checklist-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl);
}

.tracking-container h2,
.checklist-container h2 {
  font-size: var(--fs-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.tracking-container .subtitle,
.checklist-container .subtitle {
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
}

.panel-toolbar {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.arc-card {
  border-left: 3px solid var(--primary);
}

.event-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.event-marker {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 6px;
}

.event-content {
  flex: 1;
}

.event-content strong {
  display: block;
  margin-bottom: 4px;
}

.event-content p {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.event-meta {
  font-size: var(--fs-sm);
  color: var(--text-dim);
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-default);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-lg);
}

.timeline-marker {
  position: absolute;
  left: -26px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--canvas-dark);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.timeline-time {
  font-size: var(--fs-sm);
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.timeline-content p {
  font-size: var(--fs-md);
  color: var(--text-secondary);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface-1);
  border-radius: var(--rounded-lg);
  overflow: hidden;
}

.data-table th,
.data-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  font-size: var(--fs-md);
}

.data-table th {
  background: var(--surface-2);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: var(--fs-base);
}

.data-table tr:hover td {
  background: var(--surface-hover);
}

.checklist-types {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.checklist-score {
  text-align: center;
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.checklist-score .score-number {
  font-size: 48px;
  font-weight: 700;
  color: var(--primary-text);
}

.checklist-score .score-label {
  font-size: var(--fs-lg);
  color: var(--text-muted);
}

.checklist-score.good .score-number { color: var(--semantic-success); }
.checklist-score.warning .score-number { color: var(--semantic-warning); }
.checklist-score.bad .score-number { color: var(--semantic-error); }

.checklist-summary {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  font-size: var(--fs-md);
}

.checklist-category {
  margin-bottom: var(--spacing-lg);
}

.checklist-category h4 {
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-subtle);
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
}

/* ═══ 响应式断点 ═══ */

/* 平板：侧边栏自动折叠 */
@media (max-width: 1024px) {
  body .sidebar {
    position: fixed;
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }
  body:not(.sidebar-collapsed) .sidebar {
    transform: translateX(0);
    box-shadow: 2px 0 16px rgba(0,0,0,0.25);
  }
  .main-content {
    margin-left: 0;
  }
}

/* 手机：单列布局 */
@media (max-width: 640px) {
  .dashboard-stats-grid,
  .card-grid,
  .quick-action-bar {
    grid-template-columns: 1fr !important;
  }
  .ai-writer-layout {
    grid-template-columns: 1fr !important;
  }
  .editor-body-v6 {
    grid-template-columns: 1fr !important;
  }
  .editor-side-panel {
    display: none;
  }
  .reader-layout {
    grid-template-columns: 1fr !important;
  }
  .reader-sidebar {
    display: none;
  }
  h2 { font-size: var(--fs-xl); }
  .nav-item span:not(.icon) { display: none; }
  .sidebar { width: 56px; }
  .sidebar-logo h1 { display: none; }
  .project-selector label,
  .project-selector .btn-new-project .label { display: none; }
}

.checklist-category {
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.checklist-category h4 {
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  font-size: var(--fs-md);
}

.checklist-item .item-icon {
  flex-shrink: 0;
}

.checklist-item .item-name {
  color: var(--text-primary);
}

.checklist-item .item-detail {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  margin-left: var(--spacing-sm);
}

.reader-layout {
  display: flex;
  gap: var(--spacing-xl);
  height: calc(100vh - 200px);
}

.reader-sidebar {
  width: 250px;
  flex-shrink: 0;
  overflow-y: auto;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-md);
  padding: var(--spacing-md);
}

.reader-sidebar h3 {
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-subtle);
}

.reader-chapter-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--rounded-sm);
  cursor: pointer;
  transition: background 0.2s ease;
  font-size: var(--fs-md);
}

.reader-chapter-item:hover {
  background: var(--surface-hover);
}

.reader-chapter-item.active {
  background: var(--primary);
  color: var(--on-primary);
}

.reader-chapter-item .chapter-order {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  min-width: 24px;
}

.reader-chapter-item.active .chapter-order {
  color: rgba(255, 255, 255, 0.8);
}

.reader-chapter-item .chapter-words {
  margin-left: auto;
  font-size: var(--fs-xs);
  color: var(--text-dim);
}

.reader-main {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.reader-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-md);
  margin-bottom: var(--spacing-md);
}

.reader-text p {
  text-indent: 2em;
  margin-bottom: var(--spacing-md);
  line-height: 2;
  font-size: var(--fs-lg);
}

.reader-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-md);
  margin-top: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-md);
}

.data-table th,
.data-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.data-table th {
  font-weight: 600;
  color: var(--text-muted);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table tr:hover {
  background: var(--surface-hover);
}

.priority-badge {
  padding: 2px 8px;
  border-radius: var(--rounded-full);
  font-size: var(--fs-sm);
  font-weight: 500;
}

.priority-badge.priority-高 {
  background: rgba(239, 68, 68, 0.15);
  color: var(--semantic-error);
}

.priority-badge.priority-中 {
  background: rgba(245, 158, 11, 0.15);
  color: var(--semantic-warning);
}

.priority-badge.priority-低 {
  background: rgba(34, 197, 94, 0.15);
  color: var(--semantic-success);
}

.progress-bar {
  height: 6px;
  background: var(--surface-3);
  border-radius: var(--rounded-full);
  overflow: hidden;
  margin-top: var(--spacing-sm);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent-purple));
  border-radius: var(--rounded-full);
  transition: width 0.3s ease;
}

.workflow-guide {
  margin-top: var(--spacing-xxl);
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.workflow-guide h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--spacing-xl);
}

.workflow-steps {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.workflow-step {
  flex: 1;
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xl);
  text-align: center;
}

.workflow-step .step-icon {
  font-size: var(--fs-3xl);
  margin-bottom: var(--spacing-sm);
}

.workflow-step h4 {
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.workflow-step p {
  font-size: var(--fs-base);
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
}

.workflow-arrow {
  font-size: var(--fs-2xl);
  color: var(--text-dim);
  padding-top: 60px;
}

.phase-progress {
  margin-top: var(--spacing-xxl);
}

.phase-progress h3 {
  font-size: var(--fs-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.phase-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.phase-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--fs-md);
  color: var(--text-secondary);
}

.phase-item.completed {
  color: var(--semantic-success);
}

.phase-item::before {
  content: '○';
  color: var(--text-dim);
}

.phase-item.completed::before {
  content: '●';
  color: var(--semantic-success);
}

.chapters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--spacing-lg);
  width: 100%;
}

/* ★v6.6 紧凑模式视觉：无独立边框，连续平铺，仅悬停时浮现
   设计要点（用户要求）：
     · 不要给每一项画独立方框 —— 密排时方框会切割视线，反而不好扫读
     · 平时是干净的平铺文本，靠序号色块与列对齐引导视线
     · 鼠标移上去才浮现背景高亮 + 左侧强调条 + 显示操作按钮
   行高固定，保证多栏之间纵向也能对齐。 */
.compact-grid {
  display: grid;
  grid-template-columns: 1fr;          /* 默认：窄屏 1 栏 */
  gap: 0;                              /* 无间隔，连续平铺 */
  background: transparent;
  border: none;
}

/* ≥ 820px 视口（容器约 450px+）→ 2 栏 */
@media (min-width: 820px) {
  .compact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ≥ 1200px 视口（容器约 830px+）→ 3 栏 */
@media (min-width: 1200px) {
  .compact-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ≥ 1500px 视口（容器约 1130px+）→ 4 栏 */
@media (min-width: 1500px) {
  .compact-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ≥ 2000px 视口（容器约 1630px+，超宽屏）→ 5 栏 */
@media (min-width: 2000px) {
  .compact-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}

/* 紧凑行：无边框、无独立底色 —— 平时完全平铺，靠对齐与色块引导视线 */
.ch-compact-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 12px;
  min-height: 40px;                    /* 固定行高，保证多栏纵向对齐 */
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.13s ease;
  min-width: 0;
  overflow: hidden;
}
/* 悬停才浮现：淡色背景 + 左侧强调条 */
.ch-compact-card:hover {
  background: rgba(255, 197, 61, 0.10);
}
.ch-compact-card:hover::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 2px;
  border-radius: 0 2px 2px 0;
  background: var(--primary);
}
/* 键盘可达性：聚焦时同样给出明确反馈 */
.ch-compact-card:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
  background: rgba(255, 197, 61, 0.10);
}
/* 序号：不做填充色块，只用主色文字 + 固定宽度对齐，避免密排时满屏小方块 */
.ch-compact-card .chc-order {
  flex: 0 0 auto;
  color: var(--primary-text);
  font-size: var(--fs-sm);
  font-weight: 700;
  background: transparent;
  padding: 0;
  text-align: left;
  min-width: 40px;
  opacity: 0.85;
  font-variant-numeric: tabular-nums;   /* 等宽数字，多栏纵向对齐 */
}
.ch-compact-card:hover .chc-order {
  opacity: 1;
}
/* 标题 + 字数改为上下两行，给标题留出足够宽度，避免被截成「第…」 */
.ch-compact-card .chc-body {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
  line-height: 1.25;
}
.ch-compact-card .chc-title {
  color: var(--text-primary);
  font-size: var(--fs-base);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ch-compact-card .chc-meta {
  color: var(--text-muted);
  font-size: var(--fs-xs);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 5px;
}
/* 操作按钮：平时完全隐藏且不占宽度，悬停时才浮现并挤压标题
   —— 静止状态标题可占满整行，不再被隐藏的按钮无谓地挤窄。
   用 width:0 + overflow:hidden 让隐藏时真正让出空间（opacity 仍占位）。 */
.ch-compact-card .chc-actions {
  flex: 0 0 auto;
  display: flex;
  gap: 3px;
  width: 0;
  opacity: 0;
  visibility: hidden;
  overflow: hidden;
  transition: opacity 0.13s ease, width 0.13s ease, visibility 0.13s ease;
}
.ch-compact-card:hover .chc-actions,
.ch-compact-card:focus-within .chc-actions {
  width: 126px;                        /* 5 个按钮实测总宽 */
  opacity: 1;
  visibility: visible;
}
.ch-compact-card .chc-actions .btn {
  padding: 2px 5px;
  font-size: var(--fs-sm);
  line-height: 1;
  flex: 0 0 auto;
}
/* 触屏兜底：无法悬停的设备上按钮必须常显，否则无法操作
   （hover:none 覆盖手机、平板等触摸设备；桌面鼠标不受影响） */
@media (hover: none) {
  .ch-compact-card .chc-actions {
    width: 126px;
    opacity: 1;
    visibility: visible;
  }
}
/* 极窄屏兜底：单栏显示，避免标题被挤断 */
@media (max-width: 520px) {
  .compact-grid { grid-template-columns: 1fr; }
}

.chapter-card {
  transition: all 0.2s ease;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.chapter-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3), 0 0 12px rgba(255, 197, 61, 0.15);
}

.nav-icon {
  width: 18px;
  height: 18px;
  stroke-width: 2.2;
  flex-shrink: 0;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  display: inline-block;
  vertical-align: middle;
}

.nav-item:hover .nav-icon,
.nav-summary:hover .nav-icon {
  color: var(--primary-text);
  transform: scale(1.1);
}

.nav-item.active .nav-icon {
  color: var(--primary-text);
  filter: drop-shadow(0 0 6px rgba(255, 197, 61, 0.5));
}

.list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.comparison-side h4 {
  font-size: var(--fs-md);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-muted);
}

.comparison-content {
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-md);
  padding: var(--spacing-md);
  max-height: 400px;
  overflow-y: auto;
  font-size: var(--fs-base);
  line-height: 1.6;
  white-space: pre-wrap;
}

.context-preview {
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-md);
  padding: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.context-preview h4 {
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.context-preview pre {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  white-space: pre-wrap;
  line-height: 1.5;
}

.output-area {
  margin-top: var(--spacing-lg);
}

.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.output-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.output-textarea {
  width: 100%;
  min-height: 300px;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-md);
  padding: var(--spacing-lg);
  color: var(--text-primary);
  font-size: var(--fs-md);
  line-height: 1.8;
  font-family: var(--font-serif);
  resize: vertical;
}

.prompt-input-area textarea {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border-default);
  border-radius: var(--rounded-md);
  padding: var(--spacing-lg);
  color: var(--text-primary);
  font-size: var(--fs-md);
  line-height: 1.6;
  resize: vertical;
}

.prompt-input-area textarea:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 197, 61, 0.1);
}

.input-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--spacing-md);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--fs-lg);
  font-weight: 600;
}

.btn-danger {
  background: var(--semantic-error);
  color: white;
  border-color: var(--semantic-error);
}

.btn-danger:hover {
  background: #dc2626;
}

.empty-hint {
  text-align: center;
  color: var(--text-dim);
  padding: var(--spacing-xxl);
  font-size: var(--fs-md);
}

.hidden {
  display: none !important;
}

.checklist-raw pre {
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-md);
  padding: var(--spacing-lg);
  font-size: var(--fs-sm);
  overflow-x: auto;
  max-height: 500px;
}

@media (max-width: 768px) {
  .workflow-steps {
    flex-direction: column;
  }
  .workflow-arrow {
    transform: rotate(90deg);
    padding: 0;
    text-align: center;
  }
  .reader-layout {
    flex-direction: column;
    height: auto;
  }
  .reader-sidebar {
    width: 100%;
  }
  .comparison {
    grid-template-columns: 1fr;
  }
  .chapters-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== World Tree Page (开放式节点世界观) ===== */
.wt-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}
.wt-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}
.wt-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--spacing-lg);
  min-height: 60vh;
}
@media (max-width: 768px) {
  .wt-layout { grid-template-columns: 1fr; }
}
.wt-sidebar {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: 4px;
  height: fit-content;
  position: sticky;
  top: 80px;
}
.wt-cat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--rounded-md);
  cursor: pointer;
  font-size: var(--fs-md);
  transition: background 150ms ease;
  user-select: none;
}
.wt-cat-item:hover { background: var(--surface-2); }
.wt-cat-item.active { background: rgba(255, 197, 61, 0.12); color: var(--primary); font-weight: 500; }
.wt-cat-icon { font-size: var(--fs-xl); flex-shrink: 0; }
.wt-cat-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wt-cat-count {
  background: var(--surface-3);
  color: var(--text-muted);
  font-size: var(--fs-xs);
  padding: 2px 7px;
  border-radius: 10px;
  flex-shrink: 0;
}
.wt-cat-item.active .wt-cat-count { background: rgba(255, 197, 61, 0.2); color: var(--primary); }
.wt-cat-actions {
  display: none;
  gap: 2px;
  flex-shrink: 0;
}
.wt-cat-item:hover .wt-cat-actions { display: flex; }
.wt-cat-actions button {
  background: transparent;
  border: 0;
  cursor: pointer;
  color: var(--text-muted);
  font-size: var(--fs-sm);
  padding: 2px 4px;
  border-radius: 4px;
}
.wt-cat-actions button:hover { background: var(--surface-3); color: var(--text-primary); }
.wt-add-cat {
  margin-top: 8px;
  width: 100%;
  justify-content: center;
}

.wt-tree {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
  min-height: 400px;
}
.wt-cat-block { margin-bottom: var(--spacing-xl); }
.wt-cat-block:last-child { margin-bottom: 0; }
.wt-cat-block-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 0 var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--spacing-md);
}
.wt-cat-block-head h4 {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  flex: 1;
}

.wt-node { transition: margin 100ms ease; }
.wt-node-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--rounded-md);
  transition: background 150ms ease;
  border: 1px solid transparent;
}
.wt-node-row:hover {
  background: var(--surface-2);
  border-color: var(--border-subtle);
}
.wt-toggle {
  background: transparent;
  border: 0;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  width: 18px;
  height: 22px;
  flex-shrink: 0;
  padding: 0;
}
.wt-toggle.wt-leaf { color: var(--text-dim); text-align: center; }
.wt-node-icon { font-size: var(--fs-lg); flex-shrink: 0; line-height: 22px; }
.wt-node-main { flex: 1; min-width: 0; }
.wt-node-title {
  font-size: var(--fs-md);
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
}
.wt-secret {
  font-size: var(--fs-xs);
  color: var(--semantic-warning);
  margin-left: 6px;
  font-weight: 400;
}
.wt-node-summary {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}
.wt-node-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 4px;
}
.wt-field-chip {
  background: var(--surface-3);
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
  max-width: 240px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.wt-node-actions {
  display: none;
  gap: 2px;
  flex-shrink: 0;
}
.wt-node-row:hover .wt-node-actions { display: flex; }
.wt-node-actions button {
  background: transparent;
  border: 0;
  cursor: pointer;
  color: var(--text-muted);
  font-size: var(--fs-base);
  padding: 3px 6px;
  border-radius: 4px;
}
.wt-node-actions button:hover { background: var(--surface-3); color: var(--text-primary); }

.wt-field-row {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
  align-items: center;
}
.wt-field-label { flex: 0 0 140px; }
.wt-field-value { flex: 1; }
.wt-field-row button { flex-shrink: 0; }
.wt-checkbox-row label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: var(--fs-base);
  cursor: pointer;
}


/* ===== World Canvas (画布式节点编辑器) ===== */
.wc-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}
.wc-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
  align-items: center;
}
.wc-actions .muted { margin-left: auto; }

/* 布局：左 sidebar + 右大画布 */
.wc-canvas-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--spacing-md);
  min-height: 70vh;
}
@media (max-width: 768px) {
  .wc-canvas-layout { grid-template-columns: 1fr; }
}

.wc-sidebar {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: 4px;
  height: fit-content;
  max-height: 80vh;
  overflow-y: auto;
}
.wc-cat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--rounded-md);
  cursor: pointer;
  font-size: var(--fs-md);
  transition: background 150ms ease;
  user-select: none;
}
.wc-cat-item:hover { background: var(--surface-2); }
.wc-cat-item.active { background: rgba(255, 197, 61, 0.12); color: var(--primary); font-weight: 500; }
.wc-cat-icon { font-size: var(--fs-lg); flex-shrink: 0; }
.wc-cat-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wc-cat-count {
  background: var(--surface-3);
  color: var(--text-muted);
  font-size: var(--fs-xs);
  padding: 2px 7px;
  border-radius: 10px;
  flex-shrink: 0;
}
.wc-cat-item.active .wc-cat-count { background: rgba(255, 197, 61, 0.2); color: var(--primary); }
.wc-cat-actions { display: none; gap: 2px; flex-shrink: 0; }
.wc-cat-item:hover .wc-cat-actions { display: flex; }
.wc-cat-actions button {
  background: transparent;
  border: 0;
  cursor: pointer;
  color: var(--text-muted);
  font-size: var(--fs-sm);
  padding: 2px 4px;
  border-radius: 4px;
}
.wc-cat-actions button:hover { background: var(--surface-3); color: var(--text-primary); }

/* 画布 */
.wc-canvas-inner {
  background: var(--surface-1);
  background-image:
    linear-gradient(rgba(120,120,140,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,120,140,0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--rounded-lg);
  position: relative;
  overflow: hidden;
  min-height: 70vh;
  cursor: grab;
}
.wc-canvas-inner:active { cursor: grabbing; }
.wc-canvas-inner > .wc-world {
  position: absolute;
  left: 0; top: 0;
  width: 4000px;
  height: 4000px;
  transform-origin: 0 0;
}
.wc-svg { position: absolute; left: 0; top: 0; pointer-events: none; overflow: visible; }
.wc-svg path { pointer-events: stroke; }
.wc-nodes-layer { position: absolute; left: 0; top: 0; width: 100%; height: 100%; }
.wc-empty-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  color: var(--text-muted);
  font-size: var(--fs-lg);
  text-align: center;
  z-index: 1;
}

/* 节点卡片 */
.wc-node {
  position: absolute;
  width: 220px;
  min-height: 80px;
  background: var(--surface-2);
  border: 1.5px solid var(--wc-color, var(--primary));
  border-radius: var(--rounded-md);
  padding: 10px 12px;
  cursor: grab;
  user-select: none;
  transition: box-shadow 150ms ease, transform 80ms ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
.wc-node:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.3); }
.wc-node:active { cursor: grabbing; }
.wc-node.wc-active { box-shadow: 0 0 0 2px var(--wc-color, var(--primary)), 0 4px 12px rgba(0,0,0,0.3); }
.wc-node.wc-secret-bg { background: linear-gradient(135deg, var(--surface-2) 70%, rgba(245,158,11,0.15)); }
.wc-node-head {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}
.wc-node-icon { font-size: var(--fs-lg); flex-shrink: 0; }
.wc-node-title {
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.wc-secret { font-size: var(--fs-xs); color: var(--semantic-warning); }
.wc-node-conn-badge {
  background: var(--wc-color, var(--primary));
  color: white;
  font-size: var(--fs-2xs);
  padding: 1px 6px;
  border-radius: 8px;
  min-width: 16px;
  text-align: center;
}
.wc-node-summary {
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.wc-node-chips {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 4px;
}
.wc-chip {
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  background: var(--surface-3);
  padding: 2px 6px;
  border-radius: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 4 个 handle：从四角拉出连线 */
.wc-handle {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--wc-color, var(--primary));
  border: 2px solid var(--surface-1);
  border-radius: 50%;
  cursor: crosshair;
  opacity: 0;
  transition: opacity 120ms ease, transform 120ms ease;
  z-index: 2;
}
.wc-handle:hover { transform: scale(1.4); opacity: 1; }
.wc-node:hover .wc-handle { opacity: 0.7; }
.wc-h-tl { left: -5px;  top: -5px; }
.wc-h-tr { right: -5px; top: -5px; }
.wc-h-bl { left: -5px;  bottom: -5px; }
.wc-h-br { right: -5px; bottom: -5px; }

/* 字段编辑行（沿用 wt- 兼容） */
.wc-field-row {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
  align-items: center;
}
.wc-field-label { flex: 0 0 140px; }
.wc-field-value { flex: 1; }
.wc-checkbox-row label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: var(--fs-base);
  cursor: pointer;
}

/* ===== Dashboard · 分析 & 决策面板 ===== */
#analysis-section { display: block; }
#analysis-section.hidden { display: none; }
.da-card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 18px 20px;
  margin-top: 22px;
}
.da-card h3 { margin: 0 0 12px; font-size: var(--fs-lg); }
.da-card h4 { margin: 0 0 8px; font-size: var(--fs-md); color: var(--text-secondary); }
.da-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.da-stat { background: rgba(255, 197, 61,0.08); border-radius: 10px; padding: 12px; text-align: center; }
.da-stat b { display: block; font-size: 20px; color: var(--accent); }
.da-stat span { font-size: var(--fs-sm); color: var(--text-secondary); }
.da-feel { margin: 12px 0 0; padding: 10px 12px; background: rgba(34,197,94,0.08); border-radius: 8px; font-size: var(--fs-base); }
.da-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.da-chip { background: rgba(255,255,255,0.05); border: 1px solid var(--border-color); border-radius: 20px; padding: 4px 12px; font-size: var(--fs-sm); }
.da-chip b { color: var(--accent); }
.da-list { margin: 0; padding-left: 18px; }
.da-list li { margin: 7px 0; font-size: var(--fs-base); line-height: 1.5; }
.da-tip { color: var(--text-secondary); font-size: var(--fs-sm); margin: 2px 0 2px 0; }
.da-mys { color: var(--semantic-warning); font-size: var(--fs-sm); }
.da-rec { color: var(--accent); font-size: var(--fs-sm); margin-left: 6px; }
.da-node-title { font-weight: 600; }
.da-decision { border-color: rgba(245,158,11,0.35); }
.da-tips li b { color: var(--semantic-warning); }
.da-pass { color: var(--semantic-success); font-size: var(--fs-base); padding: 8px 10px; background: rgba(34,197,94,0.1); border-radius: 8px; }
.da-warn { color: var(--semantic-warning); font-size: var(--fs-base); margin-bottom: 6px; }