/* 老林 PDF 阅读器样式 - 与工具站风格对齐 */

/* ===== C. 双栏模式 ===== */
.viewer-container.two-col {
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  position: relative;
}

.viewer-container.two-col .pdf-page {
  display: inline-block;
  vertical-align: top;
  margin: 0;
}

.pdf-page-placeholder {
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: 2px;
}

/* ===== A. 搜索高亮可点击 ===== */
.search-highlight {
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
}

/* 全局 hidden 修复：作者样式 display:flex 会覆盖 UA 的 [hidden] display:none（欢迎页不消失的根因） */
[hidden] { display: none !important; }

:root {
  --bg: #0a0a0f;
  --card: #14141f;
  --card-alt: #161622;
  --card-hover: #1c1c2e;
  --border: #1f1f35;
  --border-focus: rgba(167, 139, 250, 0.4);
  --text: #e8e8f0;
  --text2: #7c7c9a;
  --text3: #5a5a72;
  --purple: #a78bfa;
  --purple-hover: #8b5cf6;
  --purple-glow: rgba(167, 139, 250, 0.25);
  --green: #34d399;
  --green-glow: rgba(52, 211, 153, 0.25);
  --red: #f87171;
  --orange: #fbbf24;
  --blue: #60a5fa;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 18px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --nav-h: 56px;
  --status-h: 32px;
  --toolbar-h: 52px;
}

/* 浅色主题 */
body.light-theme {
  --bg: #fafafa;
  --card: #ffffff;
  --card-alt: #f5f5f7;
  --card-hover: #ececef;
  --border: #e5e5ea;
  --border-focus: rgba(139, 92, 246, 0.4);
  --text: #1c1c1e;
  --text2: #6c6c70;
  --text3: #98989d;
  --purple: #8b5cf6;
  --purple-glow: rgba(139, 92, 246, 0.15);
}

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

html, body {
  height: 100%;
  overflow: hidden;
  font-size: 18px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
}

/* ===== 导航 ===== */
.nav {
  background: rgba(20, 20, 31, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: var(--nav-h);
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
}

body.light-theme .nav { background: rgba(255, 255, 255, 0.92); }

.nav .logo {
  color: var(--purple);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
}

.nav a {
  color: var(--text2);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s;
}

.nav a:hover { color: var(--text); }

.nav .nav-current {
  color: var(--text);
  font-weight: 600;
  position: relative;
}

.nav .nav-current::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -18px;
  height: 2px;
  background: var(--purple);
}

.nav-spacer { flex: 1; }

.nav-action {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  background: rgba(167, 139, 250, 0.12);
  color: var(--purple) !important;
  font-weight: 500;
}

/* 登录用户昵称徽章：作为普通导航项随导航流排布（不再悬浮到最右侧） */
.wx-user-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(167, 139, 250, 0.14);
  color: var(--purple);
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
}
.wx-user-badge[hidden] { display: none !important; }

/* 登录按钮/徽章文字缓慢交替闪烁的淡入淡出过渡 */
#loginBtn, #wxUserNick {
  transition: opacity 0.5s ease;
}

.nav-action:hover { background: rgba(167, 139, 250, 0.2); }

/* ===== 状态栏 ===== */
.reader-status {
  height: var(--status-h);
  padding: 0 20px;
  background: var(--card-alt);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text2);
  flex-shrink: 0;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green-glow);
}

.status-spacer { flex: 1; }

/* 未打开文档时：隐藏空隙和进度条，让状态文字居中；打开后恢复左右布局 */
.reader-status:not(.active) .status-spacer,
.reader-status:not(.active) .status-progress { display: none; }
.reader-status.active { justify-content: flex-start; }

.status-hide { display: none; }
.reader-status.active #pageIndicator,
.reader-status.active #zoomIndicator { display: inline; }

/* ===== 主区域 ===== */
.reader-app {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

/* ===== 欢迎页 ===== */
.welcome-view {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 40px 20px;
  overflow-y: auto;
  overflow-x: hidden;
}

.welcome-card {
  max-width: 560px;
  width: 100%;
  text-align: center;
  margin: auto 0;
}

.welcome-icon {
  color: var(--purple);
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
  filter: drop-shadow(0 4px 20px var(--purple-glow));
}

.welcome-card h1 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.welcome-sub {
  color: var(--text2);
  font-size: 0.92rem;
  margin-bottom: 32px;
}

.dropzone {
  background: var(--card);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  transition: all 0.25s;
  cursor: pointer;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--purple);
  background: rgba(167, 139, 250, 0.04);
}

.dropzone-icon {
  color: var(--purple);
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.dropzone-text {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

.dropzone-hint {
  color: var(--text2);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.dropzone-privacy {
  color: var(--text3);
  font-size: 0.78rem;
  margin-top: 20px;
}

.btn-primary {
  background: var(--purple);
  color: #0a0a0f;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 28px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-primary:hover { background: var(--purple-hover); color: #fff; }

/* ===== 功能卡片 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 32px;
}

@media (max-width: 640px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.feature-icon { font-size: 1.6rem; }
.feature-text {
  font-size: 0.78rem;
  color: var(--text2);
}
.feature-desc {
  font-size: 0.68rem;
  color: var(--text3);
  line-height: 1.4;
}

/* ===== 信任条 ===== */
.trust-strip {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 20px;
  text-align: left;
}
.trust-strip-item {
  font-size: 0.8rem;
  color: var(--text2);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
}

/* ===== 常见问题 ===== */
.faq-section {
  margin-top: 32px;
  text-align: left;
}
.faq-section h3 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.faq-section details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 8px;
  overflow: hidden;
}
.faq-section summary {
  cursor: pointer;
  padding: 12px 14px;
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 500;
  list-style: none;
  user-select: none;
}
.faq-section summary::-webkit-details-marker { display: none; }
.faq-section summary::before {
  content: '▸ ';
  color: var(--purple);
}
.faq-section details[open] summary::before {
  content: '▾ ';
}
.faq-section details p {
  margin: 0;
  padding: 0 14px 12px;
  font-size: 0.8rem;
  color: var(--text2);
  line-height: 1.7;
}

/* ===== 最近打开 ===== */
.recent-section {
  margin-top: 32px;
  text-align: left;
}

.recent-section h3 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}

.recent-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.recent-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.2s;
}

.recent-item:hover {
  border-color: var(--purple);
  background: var(--card-hover);
}

.recent-icon {
  width: 36px;
  height: 36px;
  background: rgba(167, 139, 250, 0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--purple);
  flex-shrink: 0;
}

.recent-info { flex: 1; min-width: 0; }
.recent-name {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.recent-meta {
  font-size: 0.72rem;
  color: var(--text3);
  margin-top: 2px;
}

.recent-remove {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text3);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}

.recent-remove:hover {
  background: rgba(248, 113, 113, 0.15);
  color: var(--red);
}

/* ===== 阅读视图 ===== */
.reader-view {
  flex: 1;
  display: flex;
  min-height: 0;
  overflow: hidden;
}

/* 左侧侧栏 */
.sidebar-left {
  width: 220px;
  background: var(--card-alt);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width 0.2s, margin 0.2s;
  overflow: hidden;
}

.sidebar-left.collapsed {
  width: 0;
  border-right: none;
}

.sidebar-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sidebar-tab {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text3);
  padding: 10px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  border-bottom: 2px solid transparent;
}

.sidebar-tab:hover { color: var(--text2); }
.sidebar-tab.active {
  color: var(--purple);
  border-bottom-color: var(--purple);
}

.sidebar-content {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.sidebar-pane {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  padding: 12px;
  display: none;
}

.sidebar-pane.active { display: block; }

.empty-hint {
  color: var(--text3);
  font-size: 0.82rem;
  text-align: center;
  padding: 24px 12px;
}

/* 缩略图 */
.thumbs-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.thumb-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.2s;
}

.thumb-item:hover {
  border-color: var(--purple);
}

.thumb-item.active {
  border-color: var(--purple);
  background: rgba(167, 139, 250, 0.08);
}

.thumb-canvas {
  width: 100%;
  background: #fff;
  border-radius: 4px;
  display: block;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.thumb-num {
  font-size: 0.72rem;
  color: var(--text2);
  margin-top: 6px;
}

/* 目录树 */
.outline-tree { font-size: 0.85rem; }

.outline-item {
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s;
  color: var(--text);
  line-height: 1.4;
  display: block;
}

.outline-item:hover {
  background: var(--card-hover);
  color: var(--purple);
}

.outline-item.lvl-2 { padding-left: 22px; }
.outline-item.lvl-3 { padding-left: 36px; color: var(--text2); font-size: 0.8rem; }
.outline-item.lvl-4 { padding-left: 50px; color: var(--text2); font-size: 0.78rem; }

/* 标注列表 */
.annot-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.annot-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.annot-item:hover {
  background: var(--card-hover);
}

.annot-page {
  font-size: 0.72rem;
  color: var(--orange);
  font-weight: 600;
  margin-bottom: 4px;
}

.annot-text {
  font-size: 0.82rem;
  color: var(--text);
  line-height: 1.5;
  word-break: break-word;
}

.annot-time {
  font-size: 0.7rem;
  color: var(--text3);
  margin-top: 4px;
}

.annot-remove {
  margin-top: 6px;
  background: transparent;
  border: none;
  color: var(--text3);
  font-size: 0.72rem;
  cursor: pointer;
  padding: 0;
}

.annot-remove:hover { color: var(--red); }

/* ===== 中间主区 ===== */
.reader-main {
  flex: 1;
  position: relative;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.viewer-wrap {
  flex: 1;
  overflow: auto;
  position: relative;
  scroll-behavior: smooth;
}

.viewer-container {
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  min-height: 100%;
}

.pdf-page {
  position: relative;
  background: #fff;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  border-radius: 2px;
}

.pdf-page canvas {
  display: block;
  border-radius: 2px;
}

.pdf-page-num {
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  color: var(--text3);
}

.text-layer {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  opacity: 1;
  line-height: 1;
  user-select: text;
  pointer-events: auto;
}

.text-layer > span,
.text-layer > br {
  color: transparent;
  position: absolute;
  white-space: pre;
  cursor: text;
  transform-origin: 0% 0%;
}

.text-layer ::selection {
  background: rgba(167, 139, 250, 0.4);
}

/* 搜索高亮 */
.search-highlight {
  background: rgba(251, 191, 36, 0.35) !important;
  color: transparent !important;
  border-radius: 2px;
}

.search-highlight.current {
  background: rgba(251, 191, 36, 0.7) !important;
  box-shadow: 0 0 0 2px var(--orange);
}

/* 标注高亮 */
.annot-highlight {
  background: rgba(96, 165, 250, 0.3) !important;
  color: transparent !important;
  border-radius: 2px;
}

.annot-mode .text-layer {
  cursor: crosshair;
}

/* 翻页覆盖层 */
.page-overlay {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  cursor: pointer;
  z-index: 10;
  opacity: 0;
  transition: opacity 0.2s;
  background: linear-gradient(to right, rgba(167, 139, 250, 0.04), transparent);
}

.page-overlay.right {
  right: 0;
  background: linear-gradient(to left, rgba(167, 139, 250, 0.04), transparent);
}

.reader-main:hover .page-overlay { opacity: 1; }

.viewer-loading[hidden] { display: none !important; }

.viewer-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 15, 0.85);
  gap: 12px;
  z-index: 20;
}

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

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

/* ===== 右侧侧栏 ===== */
.sidebar-right {
  width: 280px;
  background: var(--card-alt);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
  transition: width 0.2s, border 0.2s;
}

.sidebar-right.collapsed {
  width: 0;
  border-left: none;
  overflow: hidden;
}

/* 搜索面板 */
.search-panel {
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input-wrap:focus-within {
  border-color: var(--purple);
  box-shadow: 0 0 0 3px var(--purple-glow);
}

.search-icon {
  color: var(--text3);
  flex-shrink: 0;
}

.search-input-wrap input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 10px;
  color: var(--text);
  font-size: 0.88rem;
  font-family: var(--font);
  min-width: 0;
}

.search-input-wrap input::placeholder { color: var(--text3); }

.search-close {
  background: transparent;
  border: none;
  color: var(--text3);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}

.search-close:hover { color: var(--text); }

.search-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--text2);
}

.search-count {
  flex: 1;
  font-variant-numeric: tabular-nums;
}

.search-nav,
.search-case {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text2);
  border-radius: 6px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

.search-nav:hover,
.search-case:hover {
  background: var(--card-hover);
  color: var(--text);
}

.search-case.active {
  background: rgba(167, 139, 250, 0.18);
  color: var(--purple);
  border-color: var(--purple);
}

/* 快捷操作 */
.quick-actions {
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.quick-actions h4,
.doc-info h4 {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.quick-btn {
  width: 100%;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  transition: all 0.2s;
  font-family: var(--font);
}

.quick-btn:hover {
  background: var(--card);
  border-color: var(--purple);
  color: var(--purple);
}

.quick-btn.active {
  background: rgba(167, 139, 250, 0.12);
  border-color: var(--purple);
  color: var(--purple);
}

/* 文档信息 */
.doc-info {
  padding: 16px;
}

.doc-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.doc-info-row:last-child { border-bottom: none; }
.doc-info-row span:first-child { color: var(--text2); }
.doc-info-row span:last-child { color: var(--text); font-weight: 500; }

.ellipsis {
  max-width: 60%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== 底部工具栏 ===== */
.reader-toolbar {
  height: var(--toolbar-h);
  background: var(--card-alt);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  gap: 6px;
  flex-shrink: 0;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}

.tb-btn {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 8px;
  background: transparent;
  border: none;
  color: var(--text2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.tb-btn:hover {
  background: var(--card-hover);
  color: var(--text);
}

.tb-btn:active {
  transform: scale(0.95);
}

.tb-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.tb-btn.tb-btn-label {
  width: auto;
  padding: 0 10px;
  gap: 5px;
}

.tb-btn .tb-label {
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

/* 翻译按钮高亮：橙色渐变，突出 AI 翻译核心功能 */
#tbTranslateBtn {
  background: linear-gradient(135deg, #f59e0b, #f97316);
  color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.35);
}
#tbTranslateBtn:hover {
  background: linear-gradient(135deg, #fbbf24, #fb923c);
  color: #fff;
}
#tbTranslateBtn .tb-label { color: #fff; }
body.light-theme #tbTranslateBtn { color: #fff; }

/* 导航返回按钮 */
.nav-back {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: 8px;
  background: rgba(167, 139, 250, 0.12);
  color: var(--purple);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.2s;
}
.nav-back:hover { background: rgba(167, 139, 250, 0.22); color: var(--text); }
.nav-back svg { flex-shrink: 0; }

.tb-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  margin: 0 4px;
  flex-shrink: 0;
}

.tb-spacer { width: 12px; flex-shrink: 0; }

.page-jumper {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--text2);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.page-jumper input {
  width: 50px;
  height: 30px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  text-align: center;
  font-size: 0.85rem;
  font-family: var(--font);
  outline: none;
  padding: 0;
  transition: border-color 0.2s;
}

.page-jumper input:focus {
  border-color: var(--purple);
}

.zoom-select {
  height: 30px;
  flex-shrink: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.82rem;
  padding: 0 8px;
  font-family: var(--font);
  outline: none;
  cursor: pointer;
}

.zoom-select:focus { border-color: var(--purple); }

.progress-text {
  font-size: 0.78rem;
  color: var(--text2);
  font-variant-numeric: tabular-nums;
  margin-left: auto;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 1000;
  animation: toast-in 0.25s ease;
}

.toast.error { border-color: var(--red); color: var(--red); }
.toast.success { border-color: var(--green); color: var(--green); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(167, 139, 250, 0.15);
  border-radius: 5px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(167, 139, 250, 0.3);
  background-clip: padding-box;
}

/* ===== 移动端适配 ===== */
@media (max-width: 768px) {
  .sidebar-left { width: 160px; }
  .sidebar-right { width: 240px; }

  .nav { padding: 0 12px; gap: 10px; font-size: 0.85rem; justify-content: center; }
  .nav .logo { font-size: 0.95rem; }

  .reader-toolbar { padding: 0 8px; gap: 2px; }
  .tb-btn { width: 32px; height: 32px; }
  .page-jumper input { width: 40px; }
}

@media (max-width: 640px) {
  .sidebar-left, .sidebar-right { display: none; }
  .welcome-card { padding: 0 8px; }
  .dropzone { padding: 32px 16px; }
}

/* ===== 版本角标 ===== */
.version-badge,
.nav-converter {
  display: inline-block;
  padding: 3px 10px;
  margin-left: 10px;
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--purple);
  background: rgba(167, 139, 250, 0.12);
  border: 1px solid rgba(167, 139, 250, 0.3);
  border-radius: 10px;
  cursor: help;
  user-select: none;
  white-space: nowrap;
  transition: all 0.2s;
}
.version-badge:hover,
.nav-converter:hover {
  background: rgba(167, 139, 250, 0.22);
  border-color: var(--purple);
}
.nav-converter {
  color: var(--purple);
  background: rgba(167, 139, 250, 0.12);
  border: 1px solid rgba(167, 139, 250, 0.3);
  border-radius: 10px;
  text-decoration: none;
  font-size: 0.74rem;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: all 0.2s;
}
.nav-converter:hover { transform: translateY(-1px); }
@media (max-width: 768px) {
  .version-badge { font-size: 0.65rem; padding: 2px 6px; }
}

/* 阅读进度条（8/27 P0） */
.status-progress {
  width: 80px;
  height: 4px;
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 8px;
}
.status-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--purple), #00d4ff);
  transition: width 0.2s ease;
}
#docInfo { font-size: 11px; opacity: 0.7; max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }


/* ===== 二维码占位 P1-3（Web 端与桌面同步） ===== */
.qr-slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background: white;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  min-width: 120px;
  min-height: 120px;
  font-size: 12px;
  color: #999;
}
.qr-slot-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.qr-slot-inner svg {
  width: 120px;
  height: 120px;
  display: block;
}
.qr-slot-label {
  font-size: 11px;
  color: #666;
  text-align: center;
  max-width: 130px;
  line-height: 1.3;
  margin: 0;
}
.welcome-qr-zone {
  position: absolute;
  right: 24px;
  bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: #999;
}
.welcome-qr-zone .qr-slot {
  min-width: 90px;
  min-height: 90px;
  padding: 6px;
}
.welcome-qr-zone .qr-slot-inner svg {
  width: 80px;
  height: 80px;
}

/* ==================== 沉浸模式（打开 PDF 后） ==================== */
body.immersive .nav { display: none; }
body.immersive .ad-slot-top { display: none; }
body.immersive .reader-status { display: none; }

/* 顶部条内菜单按钮（隐藏靠 hidden 属性） */
.immersive-menu-btn {
  position: fixed;
  top: 8px;
  left: 12px;
  z-index: 300;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.immersive-menu-btn:hover { color: var(--text); border-color: var(--purple); background: var(--card-hover); }

/* 菜单面板 */
.immersive-menu {
  position: fixed;
  top: 48px;
  left: 12px;
  z-index: 310;
  width: 240px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.immersive-menu-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 6px;
}
.immersive-menu-title { font-weight: 700; color: var(--purple); font-size: 0.9rem; text-decoration: none; cursor: pointer; display: block; }
.immersive-menu-back { color: var(--purple); font-weight: 600; }
.immersive-menu-docinfo { font-size: 0.72rem; color: var(--text3); }
.immersive-menu-item {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.88rem;
  text-decoration: none;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font);
  transition: background 0.15s;
}
.immersive-menu-item:hover { background: var(--card-hover); color: var(--purple); }
.immersive-menu-divider { height: 1px; background: var(--border); margin: 6px 0; }
.immersive-menu-close { color: var(--red); }
.immersive-menu-close:hover { background: rgba(248, 113, 113, 0.12); color: var(--red); }

/* 侧栏浮动面板（沉浸模式下浮在 PDF 上方，不挤压） */
body.immersive .reader-view { position: relative; }
body.immersive .sidebar-left,
body.immersive .sidebar-right {
  position: absolute;
  top: 48px;
  bottom: 0;
  z-index: 120;
  width: 280px;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.45);
}
body.immersive .sidebar-left { left: 0; }
body.immersive .sidebar-right { right: 0; }
body.immersive .sidebar-left.collapsed,
body.immersive .sidebar-right.collapsed { width: 0; box-shadow: none; }

/* 顶部细条工具栏（沉浸模式，类似福昕简洁版）+ 静止淡出 */
.reader-app { position: relative; }
body.immersive .reader-toolbar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  padding: 0 12px 0 52px;
  border-radius: 0;
  border: none;
  border-bottom: 1px solid var(--border);
  background: rgba(20, 20, 31, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  z-index: 150;
  transition: opacity 0.3s, transform 0.3s;
}
body.immersive .reader-toolbar.toolbar-hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-100%);
}
/* 顶部条文档名 */
.toolbar-docname {
  font-size: 0.82rem;
  color: var(--text2);
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-shrink: 1;
  margin-right: auto;
}

/* 欢迎页精简：功能卡片 + 信任条压成一行小字 */
.feature-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 16px;
}
.feature {
  flex-direction: row;
  padding: 4px 0;
  gap: 6px;
  border: none;
  background: transparent;
}
.feature-icon { font-size: 1rem; }
.feature-text { font-size: 0.8rem; color: var(--text2); }
.feature-desc { display: none; }
.trust-strip {
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 10px;
}
.trust-strip-item {
  border: none;
  background: transparent;
  padding: 0;
  font-size: 0.75rem;
  color: var(--text3);
}

/* 二维码默认折叠（隐藏） */
.welcome-qr-zone { display: none; }

/* ===== 广告招租占位 ===== */
.ad-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 7px 40px;
  background: linear-gradient(90deg, rgba(167, 139, 250, 0.08), rgba(251, 191, 36, 0.06));
  border-bottom: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text2);
  position: relative;
}
.ad-badge {
  display: inline-flex;
  align-items: center;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.68rem;
  color: var(--text3);
  border: 1px solid var(--border);
  background: transparent;
  line-height: 1.4;
}
.ad-text { letter-spacing: 0.2px; }

/* 右侧侧栏：公众号二维码占位（无真广告时显示） */
.ad-slot-sidebar { padding: 4px 0; }
.ad-qr-placeholder { padding: 12px 14px; }
.ad-qr-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  text-align: center;
}
.ad-qr-list { display: flex; flex-direction: column; gap: 12px; }
.ad-qr-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  transition: border-color 0.2s;
}
.ad-qr-item:hover { border-color: var(--purple); }
.ad-qr-item img {
  width: 52px;
  height: 52px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}
.ad-qr-item span { font-size: 0.8rem; color: var(--text); }
.ad-close {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text3);
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ad-close:hover { background: var(--card-hover); color: var(--text); }
.ad-placeholder-footer {
  border-bottom: none;
  border-top: 1px solid var(--border);
  padding: 6px 12px;
  font-size: 0.72rem;
}

/* ===== 底部：关注我们 + 广告占位 ===== */
.site-footer {
  flex-shrink: 0;
  background: var(--card-alt);
  border-top: 1px solid var(--border);
}
.follow-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  padding: 10px 16px 6px;
}
.follow-label {
  font-size: 0.78rem;
  color: var(--text3);
  letter-spacing: 0.3px;
}
.follow-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}
.follow-qr-thumb {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  object-fit: cover;
}
.follow-name {
  font-size: 0.78rem;
  color: var(--text2);
}
.follow-item:hover .follow-name { color: var(--purple); }
.follow-pop {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  z-index: 300;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  white-space: nowrap;
}
.follow-pop img {
  width: 130px;
  height: 130px;
  border-radius: 6px;
  display: block;
  margin: 0 auto 6px;
}
.follow-pop span {
  font-size: 0.72rem;
  color: var(--text2);
}
.follow-item:hover .follow-pop {
  opacity: 1;
  visibility: visible;
}

/* 沉浸模式隐藏底部 footer（最大化阅读面积） */
body.immersive .site-footer { display: none; }

/* ===== AI 翻译弹窗 ===== */
.translate-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  padding: 24px;
}
.translate-overlay[hidden] { display: none; }

.translate-panel {
  width: min(640px, 100%);
  max-height: min(80vh, 720px);
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.translate-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.translate-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}
.translate-close {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.translate-close:hover { background: var(--card-hover); color: var(--text); }

.translate-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.translate-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 0;
  color: var(--text2);
  font-size: 0.88rem;
}
.translate-error {
  color: var(--red);
  font-size: 0.9rem;
  text-align: center;
  padding: 32px 12px;
  line-height: 1.6;
}

.trans-seg {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--card-alt);
}
.trans-seg-orig {
  padding: 10px 14px;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--text2);
  border-bottom: 1px solid var(--border);
  white-space: pre-wrap;
  word-break: break-word;
}
.trans-seg-trans {
  padding: 10px 14px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* 选中文本翻译浮层 */
.translate-pop {
  position: fixed;
  z-index: 910;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}
.translate-pop[hidden] { display: none; }
.translate-pop-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: none;
  background: transparent;
  color: var(--purple);
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}
.translate-pop-btn:hover { background: var(--card-hover); }

/* ===== 多标签页（Tabs） ===== */
.pdf-tabbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  flex-shrink: 0;
  min-height: 40px;
}
.pdf-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: 220px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: var(--card-alt);
  border: 1px solid var(--border);
  color: var(--text2);
  font-size: 0.8rem;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.15s;
}
.pdf-tab:hover { background: var(--card-hover); color: var(--text); }
.pdf-tab.active {
  background: rgba(167, 139, 250, 0.14);
  border-color: var(--purple);
  color: var(--text);
}
.pdf-tab-label {
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 160px;
  display: inline-block;
}
.pdf-tab-close {
  background: transparent;
  border: none;
  color: var(--text3);
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1;
  padding: 0 2px;
  border-radius: 4px;
}
.pdf-tab-close:hover { color: var(--red); background: rgba(248, 113, 113, 0.12); }
.pdf-tab-add {
  background: rgba(167, 139, 250, 0.14);
  border: 1px solid var(--purple);
  color: var(--purple);
  cursor: pointer;
  height: 28px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.pdf-tab-add:hover { color: var(--purple); border-color: var(--purple); }

/* ===== 提取文字（OCR） ===== */
.ocr-footer {
  padding: 0 18px 16px;
  flex-shrink: 0;
}
.ocr-copy-btn {
  width: 100%;
  padding: 11px 0;
  border: none;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--purple), #6366f1);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.ocr-copy-btn:hover { opacity: 0.9; }
.ocr-result {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text);
  font-family: inherit;
}

/* ===== 表单填写面板 ===== */
.form-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.form-panel {
  width: min(520px, 92vw);
  max-height: 80vh;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}
.form-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.form-title { font-weight: 700; color: var(--text); font-size: 0.95rem; }
.form-close {
  background: transparent;
  border: none;
  color: var(--text2);
  cursor: pointer;
  font-size: 1.3rem;
  line-height: 1;
}
.form-close:hover { color: var(--red); }
.form-body {
  overflow-y: auto;
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 0.8rem; color: var(--text2); word-break: break-all; }
.form-input {
  width: 100%;
  background: var(--card-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 8px 10px;
  font-size: 0.85rem;
  font-family: var(--font);
  resize: vertical;
}
.form-input:focus { outline: none; border-color: var(--purple); }
.form-row input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--purple); cursor: pointer; }
.form-unsupported { font-size: 0.78rem; color: var(--orange); }
.form-empty { color: var(--text3); text-align: center; padding: 20px 0; font-size: 0.85rem; }
.form-footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  flex-shrink: 0;
}
.form-export-btn {
  background: var(--purple);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 9px 18px;
  font-size: 0.88rem;
  cursor: pointer;
  font-weight: 600;
}
.form-export-btn:hover { background: var(--purple-hover); }
.form-export-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 工具栏「表单」按钮：检测到表单域时点亮 */
.tb-btn.has-form { color: var(--purple); }

/* ===== 会员升级收费入口 ===== */

/* 翻译弹窗头部：升级按钮 */
.translate-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.translate-upgrade-btn {
  border: 1px solid var(--purple);
  background: transparent;
  color: var(--purple);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.78rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}
.translate-upgrade-btn:hover { background: var(--purple); color: #fff; }
.translate-upgrade-btn.is-member { border-color: var(--green); color: var(--green); cursor: default; }
.translate-upgrade-btn.is-member:hover { background: transparent; color: var(--green); }

/* 翻译额度用尽：升级 CTA */
.translate-upgrade-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card-alt);
  color: var(--text2);
  font-size: 0.85rem;
  text-align: center;
}
.upgrade-entry-btn {
  border: none;
  background: var(--purple);
  color: #fff;
  border-radius: var(--radius-sm);
  padding: 9px 20px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.upgrade-entry-btn:hover { background: var(--purple-hover); }

/* 档位选择面板 */
.upgrade-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1010;
  padding: 24px;
}
.upgrade-overlay[hidden] { display: none; }
.upgrade-panel {
  width: min(560px, 92vw);
  max-height: 82vh;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}
.upgrade-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.upgrade-title { font-weight: 700; color: var(--text); font-size: 0.95rem; }
.upgrade-close {
  background: transparent;
  border: none;
  color: var(--text2);
  cursor: pointer;
  font-size: 1.3rem;
  line-height: 1;
}
.upgrade-close:hover { color: var(--red); }
.upgrade-body {
  overflow-y: auto;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.upgrade-plans {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.upgrade-group-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--purple);
  margin-bottom: 10px;
}
.upgrade-plan-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.upgrade-plan {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 14px;
  background: var(--card-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
}
.upgrade-plan-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text2);
}
.upgrade-plan-price {
  font-size: 0.82rem;
  color: var(--text2);
}
.upgrade-plan-amount {
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--purple);
}
.upgrade-plan-desc {
  font-size: 0.78rem;
  color: var(--text3);
}
.upgrade-plan-btn {
  width: 100%;
  margin-top: 4px;
  border: none;
  background: var(--purple);
  color: #fff;
  border-radius: var(--radius-sm);
  padding: 9px 0;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.upgrade-plan-btn:hover { background: var(--purple-hover); }
.upgrade-plan-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.upgrade-tip {
  font-size: 0.78rem;
  color: var(--text3);
  text-align: center;
}

/* 付款二维码面板 */
.pay-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1020;
  padding: 24px;
}
.pay-overlay[hidden] { display: none; }
.pay-panel {
  width: min(360px, 92vw);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}
.pay-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.pay-title { font-weight: 700; color: var(--text); font-size: 0.95rem; }
.pay-close {
  background: transparent;
  border: none;
  color: var(--text2);
  cursor: pointer;
  font-size: 1.3rem;
  line-height: 1;
}
.pay-close:hover { color: var(--red); }
.pay-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 20px 18px;
}
.pay-qr {
  width: 220px;
  height: 220px;
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pay-qr svg {
  width: 100%;
  height: 100%;
  display: block;
}
.pay-qr-error {
  color: var(--red);
  font-size: 0.82rem;
  text-align: center;
}
.pay-tip {
  font-size: 0.82rem;
  color: var(--text2);
  text-align: center;
  line-height: 1.6;
}
.pay-status {
  font-size: 0.82rem;
  color: var(--purple);
}
.pay-channel {
  display: flex;
  gap: 8px;
  width: 100%;
}
.pay-channel-btn {
  flex: 1;
  padding: 9px 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--text2);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all .15s;
}
.pay-channel-btn.active {
  border-color: #07c160;
  color: #07c160;
  font-weight: 700;
  background: rgba(7, 193, 96, 0.08);
}
.vip-diff { text-align: left; margin: 14px 0 4px; padding: 10px 12px; background: var(--card); border-radius: 8px; font-size: 0.8rem; line-height: 1.7; }
.vip-diff-item { margin: 3px 0; }
.vip-diff-item strong { color: var(--purple); }
.nav .vip-entry { color: var(--purple); font-weight: 700; }