/* ============================================================
   商贸管理平台 - 公共样式表
   设计风格：现代简约，清爽专业，10套主题
   ============================================================ */

/* ---------- CSS 变量（默认：纯白主题） ---------- */
:root {
  --c-primary: #4f46e5;
  --c-primary-light: #818cf8;
  --c-primary-bg: #eef2ff;
  --c-primary-hover: #4338ca;
  --c-success: #10b981;
  --c-success-light: #34d399;
  --c-success-bg: #ecfdf5;
  --c-warning: #f59e0b;
  --c-warning-light: #fbbf24;
  --c-warning-bg: #fffbeb;
  --c-danger: #ef4444;
  --c-danger-light: #f87171;
  --c-danger-bg: #fef2f2;
  --c-danger-hover: #dc2626;
  --c-info: #06b6d4;
  --c-info-light: #22d3ee;
  --c-info-bg: #ecfeff;

  --c-bg: #f1f5f9;
  --c-bg-card: #ffffff;
  --c-bg-sidebar: #ffffff;
  --c-text: #1e293b;
  --c-text-2: #475569;
  --c-text-3: #94a3b8;
  --c-border: #e2e8f0;
  --c-border-light: #f1f5f9;

  --c-sidebar-text: #475569;
  --c-sidebar-text-hover: #1e293b;
  --c-sidebar-item-hover-bg: #f1f5f9;
  --c-sidebar-item-active-bg: #eef2ff;
  --c-sidebar-item-active-text: #4f46e5;
  --c-sidebar-logo-text: #1e293b;
  --c-sidebar-logo-sub: #818cf8;
  --c-sidebar-border: #e2e8f0;
  --c-sidebar-scrollbar: #cbd5e1;
  --c-sidebar-group-title: #94a3b8;

  --c-topbar-bg: #ffffff;

  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 14px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px rgba(0,0,0,.04), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.05), 0 4px 6px rgba(0,0,0,.04);

  --sidebar-w: 240px;
  --topbar-h: 56px;
  --tabs-h: 42px;
  --transition: .2s cubic-bezier(.4,0,.2,1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 14px; color: var(--c-text); background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

/* ---------- 布局 ---------- */
.app { display:flex; flex-direction:column; height:100%; overflow:hidden; }

/* 侧边栏 */
.sidebar {
  width: var(--sidebar-w); flex-shrink:0; display:flex; flex-direction:column;
  background: var(--c-bg-sidebar); color: var(--c-sidebar-text); z-index:45;
  transition: width var(--transition); overflow:hidden;
}
.sidebar-logo {
  width: var(--sidebar-w); flex-shrink:0;
  display:flex; align-items:center; gap:12px; padding:0 20px;
  height: var(--topbar-h);
}
.logo-icon { color: var(--c-primary-light); flex-shrink:0; }
.logo-text h1 { font-size:17px; font-weight:700; color:var(--c-sidebar-logo-text); line-height:1.2; }
.logo-text span { font-size:11px; color:var(--c-sidebar-logo-sub); letter-spacing:.5px; }

.side-nav { flex:1; overflow-y:auto; overflow-x:hidden; padding:8px 0; }
.side-nav::-webkit-scrollbar { width:4px; }
.side-nav::-webkit-scrollbar-thumb { background: var(--c-sidebar-scrollbar); border-radius:2px; }

/* 侧边菜单项 */
.side-nav > .nav-group { margin:2px 0; }
.nav-group-title {
  padding: 8px 20px; font-size:11px; font-weight:600;
  text-transform:uppercase; letter-spacing:1px; color: var(--c-sidebar-group-title);
}
.nav-item {
  display:flex; align-items:center; gap:10px; padding:14px 20px; cursor:pointer;
  font-size:13.5px; color: var(--c-sidebar-text); border-radius:0;
  transition: all var(--transition); position:relative; user-select:none;
}
.nav-item:hover { color: var(--c-sidebar-text-hover); background: var(--c-sidebar-item-hover-bg); }
.nav-item.active { color: var(--c-sidebar-item-active-text); background: var(--c-sidebar-item-active-bg); font-weight:500; }
.nav-item.active::before {
  content:''; position:absolute; left:0; top:6px; bottom:6px; width:3px;
  background:var(--c-primary-light); border-radius:0 3px 3px 0;
}
.nav-item .nav-icon { width:20px; text-align:center; flex-shrink:0; font-size:15px; display:flex; align-items:center; justify-content:center; }
.nav-item .nav-icon svg { width:18px; height:18px; }
.nav-item .nav-label { flex:1; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.nav-item .nav-arrow {
  width:16px; height:16px; flex-shrink:0; display:flex; align-items:center; justify-content:center;
  transition: transform var(--transition); font-size:10px;
}
.nav-item .nav-arrow.open { transform:rotate(90deg); }

/* 子菜单 */
.nav-sub { overflow:hidden; transition: max-height .3s ease; }
.nav-sub .nav-item { padding-left:50px; font-size:13px; }
.nav-sub .nav-sub .nav-item { padding-left:64px; }
.nav-sub .nav-sub .nav-sub .nav-item { padding-left:78px; }

/* 顶部栏 */
.topbar {
  height:var(--topbar-h); flex-shrink:0; display:flex; align-items:center;
  justify-content:space-between; padding:0;
  background:var(--c-topbar-bg); z-index:50;
}
.topbar-left { display:flex; align-items:center; height:100%; }
.top-nav { display:flex; gap:0; list-style:none; }

/* 主区域 */
.main-area { flex:1; display:flex; min-width:0; overflow:hidden; }
.top-nav .tn-item {
  padding:0 18px; height:var(--topbar-h); display:flex; align-items:center;
  cursor:pointer; font-size:13.5px; color:var(--c-text-2);
  border-bottom:2px solid transparent; transition:all var(--transition);
  white-space:nowrap; font-weight:500;
}
.top-nav .tn-item:hover { color:var(--c-primary); background:var(--c-primary-bg); }
.top-nav .tn-item.active { color:var(--c-primary); border-bottom-color:var(--c-primary); font-weight:600; }
.top-nav .tn-icon { margin-right:6px; font-size:15px; }

.topbar-right { display:flex; align-items:center; gap:8px; }
.topbar-actions { display:flex; gap:4px; }
.icon-btn {
  width:36px; height:36px; display:flex; align-items:center; justify-content:center;
  border:none; background:transparent; border-radius:var(--radius-sm); cursor:pointer;
  color:var(--c-text-2); transition:all var(--transition); position:relative;
}
.icon-btn:hover { background:var(--c-bg); color:var(--c-text); }
.badge-dot {
  position:absolute; top:6px; right:6px; width:7px; height:7px;
  background:var(--c-danger); border-radius:50%; border:2px solid var(--c-bg-card);
}
.user-menu {
  display:flex; align-items:center; gap:8px; padding:4px 10px 4px 4px;
  border-radius:var(--radius); cursor:pointer; transition:all var(--transition);
}
.user-menu:hover { background:var(--c-bg); }
.user-avatar {
  width:32px; height:32px; border-radius:50%; background:linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
  color:#fff; display:flex; align-items:center; justify-content:center; font-size:14px; font-weight:600;
}
.user-name { font-size:13px; color:var(--c-text); font-weight:500; }

/* ---------- 主题切换器 ---------- */
.theme-switcher { position:relative; }
.theme-panel {
  position:absolute; right:0; top:calc(100% + 8px); width:310px; max-height:440px;
  background:var(--c-bg-card); border-radius:var(--radius-lg); box-shadow:0 10px 40px rgba(0,0,0,.15);
  border:1px solid var(--c-border); z-index:100; overflow:hidden; display:none;
}
.theme-panel.show { display:block; animation: fadeInDown .2s ease; }
@keyframes fadeInDown { from{opacity:0;transform:translateY(-8px)} to{opacity:1;transform:translateY(0)} }
.theme-panel-header {
  padding:14px 16px; display:flex; justify-content:space-between; align-items:center;
  border-bottom:1px solid var(--c-border-light);
}
.theme-panel-header h3 { font-size:14px; font-weight:600; color:var(--c-text); }
.theme-panel-close {
  width:28px; height:28px; border:none; background:transparent; cursor:pointer;
  border-radius:4px; color:var(--c-text-3); display:flex; align-items:center; justify-content:center;
}
.theme-panel-close:hover { background:var(--c-bg); color:var(--c-text); }
.theme-grid { display:grid; grid-template-columns: repeat(3, 1fr); gap:8px; padding:12px; }
.theme-option {
  cursor:pointer; border-radius:var(--radius); border:2px solid transparent;
  overflow:hidden; transition:all var(--transition); text-align:center; padding:2px;
}
.theme-option:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.theme-option.active { border-color: var(--c-primary); }
.theme-swatch { height:48px; border-radius:6px; display:flex; overflow:hidden; }

/* ---------- 表单样式 ---------- */
.form-horizontal {
  max-width: 800px;
}
.form-section {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-border-light);
}
.form-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.form-section-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 3px solid var(--c-primary);
}
.form-row {
  display: flex;
  gap: 16px;
  margin-bottom: 14px;
}
.form-group {
  flex: 1;
  min-width: 200px;
}
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--c-text);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  padding: 10px 12px;
  font-size: 13px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--c-text);
  transition: all var(--transition);
  box-sizing: border-box;
}
.form-control:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(var(--c-primary-rgb), 0.1);
}
.form-control::placeholder {
  color: var(--c-text-3);
}
.form-control:disabled {
  background: var(--c-bg-disabled);
  color: var(--c-text-3);
  cursor: not-allowed;
}
.form-radio-group {
  display: flex;
  gap: 20px;
}
.form-radio {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--c-text-2);
  cursor: pointer;
}
.form-radio input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--c-primary);
}
.form-tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.form-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--c-bg);
  border-radius: 20px;
  font-size: 13px;
  color: var(--c-text-2);
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid var(--c-border);
}
.form-tag:hover {
  background: var(--c-primary-bg);
  border-color: var(--c-primary-light);
}
.form-tag input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--c-primary);
}
.form-tag input[type="checkbox"]:checked + span,
.form-tag input[type="checkbox"]:checked {
  color: var(--c-primary);
}
.form-tag:has(input[type="checkbox"]:checked) {
  background: var(--c-primary-bg);
  border-color: var(--c-primary-light);
  color: var(--c-primary);
}
.theme-swatch div { flex:1; }
.theme-name {
  font-size:11px; color:var(--c-text-2); padding:6px 0 4px; font-weight:500;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}

/* ---------- 标签卡 ---------- */
.tabs-bar {
  height:var(--tabs-h); flex-shrink:0; display:flex; align-items:center;
  background:var(--c-bg-card); border-bottom:1px solid var(--c-border);
  padding-right:8px; position:relative; z-index:30;
}
.tabs-scroll-btn {
  width:28px; height:28px; border-radius:var(--radius-sm);
  display:flex; align-items:center; justify-content:center;
  background:transparent; border:1px solid var(--c-border);
  color:var(--c-text-2); cursor:pointer;
  flex-shrink:0; margin-left:4px;
  transition:all var(--transition);
}
.tabs-scroll-btn:hover {
  background:var(--c-bg); color:var(--c-text);
}
.tabs-scroll-btn:first-child { margin-left:4px; }
.tabs-scroll { flex:1; display:flex; overflow-x:auto; overflow-y:hidden; padding:0 4px; scroll-behavior:smooth; }

/* 标签右键菜单 */
.tab-context-menu {
  position:absolute; top:100%; left:0; z-index:100;
  background:var(--c-bg-card); border:1px solid var(--c-border);
  border-radius:var(--radius-md); box-shadow:var(--shadow-lg);
  padding:4px 0; min-width:160px;
}
.context-menu-item {
  padding:8px 16px; font-size:13px; color:var(--c-text);
  cursor:pointer; transition:background var(--transition);
  display:flex; align-items:center; gap:8px;
}
.context-menu-item:hover {
  background:var(--c-bg); color:var(--c-text-hover);
}
.tabs-scroll::-webkit-scrollbar { height:2px; }
.tabs-scroll::-webkit-scrollbar-thumb { background:var(--c-border); }
.tab {
  flex-shrink:0; display:inline-flex; align-items:center; gap:6px;
  padding:5px 14px; height:32px; font-size:12.5px; cursor:pointer;
  border-radius:6px; margin-right:4px;
  color:var(--c-text-2); background:transparent;
  transition:all var(--transition); position:relative;
}
.tab:hover { background:var(--c-bg); color:var(--c-text); }
.tab.active { 
  background:linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-light) 100%); 
  color:#fff; 
  font-weight:500; 
  box-shadow:0 2px 8px rgba(var(--c-primary-rgb), 0.3);
}
.tab .tab-close {
  width:18px; height:18px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-size:12px; opacity:0; transition:all var(--transition); flex-shrink:0;
}
.tab:hover .tab-close { opacity:1; }
.tab .tab-close:hover { background:var(--c-danger); color:#fff; }
.tabs-action-btn {
  width:28px; height:28px; display:flex; align-items:center; justify-content:center;
  border:none; background:transparent; border-radius:var(--radius-sm); cursor:pointer;
  color:var(--c-text-3); transition:all var(--transition);
}
.tabs-action-btn:hover { background:var(--c-bg); color:var(--c-danger); }

/* 内容包装器 */
.content-wrapper { flex:1; display:flex; flex-direction:column; min-width:0; overflow:hidden; }

/* 内容区 */
.content { flex:1; overflow-y:auto; background:var(--c-bg); }
.content::-webkit-scrollbar { width:6px; }
.content::-webkit-scrollbar-thumb { background:#cbd5e1; border-radius:3px; }

/* ---------- 页面通用 ---------- */
.page-fade-in { animation:fadeIn .3s ease; }
@keyframes fadeIn { from{opacity:0;transform:translateY(6px);} to{opacity:1;transform:translateY(0);} }

.page-header {
  display:flex; justify-content:space-between; align-items:flex-start;
  padding:24px 28px 20px; gap:16px; flex-wrap:wrap;
}
.page-title { font-size:22px; font-weight:700; color:var(--c-text); }
.page-desc { font-size:13px; color:var(--c-text-3); margin-top:4px; }
.page-header-actions { display:flex; align-items:center; gap:12px; }
.text-muted { font-size:12px; color:var(--c-text-3); }

/* ---------- 统计卡片 ---------- */
.stats-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; padding:0 28px 24px; }
.stat-card { background:var(--c-bg-card); border-radius:var(--radius-lg); box-shadow:var(--shadow); overflow:hidden; transition:all var(--transition); }
.stat-card:hover { box-shadow:var(--shadow-lg); transform:translateY(-2px); }
.stat-card-inner { display:flex; justify-content:space-between; align-items:center; padding:20px 24px; }
.stat-label { font-size:12.5px; color:var(--c-text-3); font-weight:500; }
.stat-value { font-size:28px; font-weight:700; color:var(--c-text); margin:6px 0 4px; }
.stat-change { font-size:12px; display:flex; align-items:center; gap:3px; }
.stat-change.up { color:var(--c-success); }
.stat-change.down { color:var(--c-danger); }

.stat-icon-wrap { width:52px; height:52px; border-radius:var(--radius); display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.stat-icon-primary { background:var(--c-primary-bg); color:var(--c-primary); }
.stat-icon-success { background:var(--c-success-bg); color:var(--c-success); }
.stat-icon-warning { background:var(--c-warning-bg); color:var(--c-warning); }
.stat-icon-info { background:var(--c-info-bg); color:var(--c-info); }

.stat-primary { border-top: 3px solid var(--c-primary); }
.stat-success { border-top: 3px solid var(--c-success); }
.stat-warning { border-top: 3px solid var(--c-warning); }
.stat-info  { border-top: 3px solid var(--c-info); }

/* ---------- 卡片 ---------- */
.card { background:var(--c-bg-card); border-radius:var(--radius-lg); box-shadow:var(--shadow); margin:0 28px 20px; overflow:hidden; }
.card-header { display:flex; justify-content:space-between; align-items:center; padding:18px 24px; border-bottom:1px solid var(--c-border-light); }
.card-title { font-size:15px; font-weight:600; color:var(--c-text); }
.card-actions { display:flex; gap:4px; }
.card-body { padding:20px 24px; }
.card-body.p-0 { padding:0; }

/* ---------- 按钮 ---------- */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:6px;
  padding:8px 18px; border-radius:var(--radius-sm); font-size:13.5px; font-weight:500;
  border:none; cursor:pointer; transition:all var(--transition); white-space:nowrap;
}
.btn-primary { background:var(--c-primary); color:#fff; }
.btn-primary:hover { background:var(--c-primary-hover); box-shadow:0 2px 8px rgba(79,70,229,.35); }
.btn-outline { background:transparent; border:1px solid var(--c-border); color:var(--c-text-2); }
.btn-outline:hover { background:var(--c-bg); border-color:#cbd5e1; }
.btn-danger { background:var(--c-danger); color:#fff; }
.btn-danger:hover { background:var(--c-danger-hover); }
.btn-xs { padding:3px 10px; font-size:11.5px; border-radius:4px; }
.btn-sm { padding:5px 14px; font-size:12.5px; }
.btn.active { background:var(--c-primary); color:#fff; border-color:var(--c-primary); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x:auto; }
.table { width:100%; border-collapse:collapse; font-size:13.5px; }
.table th, .table td { padding:12px 16px; text-align:left; border-bottom:1px solid var(--c-border-light); white-space:nowrap; }
.table th { background:var(--c-border-light); font-weight:600; color:var(--c-text-2); font-size:12.5px; letter-spacing:.3px; }
.table tbody tr { transition:background var(--transition); }
.table tbody tr:hover { background:var(--c-border-light); }

/* ---------- 徽章 ---------- */
.badge {
  display:inline-flex; align-items:center; padding:3px 10px;
  border-radius:12px; font-size:11.5px; font-weight:500; letter-spacing:.2px;
}
.badge-primary { background:var(--c-primary-bg); color:var(--c-primary); }
.badge-success { background:var(--c-success-bg); color:#059669; }
.badge-warning { background:var(--c-warning-bg); color:#b45309; }
.badge-danger  { background:var(--c-danger-bg); color:#dc2626; }
.badge-info    { background:var(--c-info-bg); color:#0891b2; }

/* ---------- 图表占位 ---------- */
.chart-placeholder { height:220px; padding:10px 0; }
.chart-bars { display:flex; align-items:flex-end; justify-content:space-around; height:100%; gap:12px; }
.chart-bar {
  flex:1; max-width:48px; background:linear-gradient(180deg, var(--c-primary-light), var(--c-primary));
  border-radius:6px 6px 0 0; position:relative; transition:height .5s ease; opacity:.85;
  display:flex; justify-content:center; min-height:10px;
}
.chart-bar:hover { opacity:1; }
.chart-bar span {
  position:absolute; bottom:-22px; font-size:11px; color:var(--c-text-3);
}

/* ---------- 待办列表 ---------- */
.todo-list { padding:0; }
.todo-item {
  display:flex; align-items:center; gap:10px; padding:13px 24px;
  border-bottom:1px solid var(--c-border-light); font-size:13px; color:var(--c-text-2);
  transition:background var(--transition);
}
.todo-item:hover { background:var(--c-border-light); }
.todo-dot { width:8px; height:8px; border-radius:50%; flex-shrink:0; }
.todo-dot.warning { background:var(--c-warning); }
.todo-dot.danger  { background:var(--c-danger); }
.todo-dot.info    { background:var(--c-info); }
.todo-dot.success { background:var(--c-success); }
.todo-time { margin-left:auto; font-size:11.5px; color:var(--c-text-3); flex-shrink:0; }

/* ---------- 链接 ---------- */
.link { color:var(--c-primary); font-size:13px; text-decoration:none; cursor:pointer; }
.link:hover { text-decoration:underline; }

/* ---------- 表单 ---------- */
.form-group { margin-bottom:16px; }
.form-label { display:block; margin-bottom:6px; font-size:13px; font-weight:500; color:var(--c-text-2); }
.form-input, .form-select, .form-textarea {
  width:100%; padding:9px 13px; border:1px solid var(--c-border); border-radius:var(--radius-sm);
  font-size:13.5px; color:var(--c-text); background:var(--c-bg-card); transition:all var(--transition);
  outline:none; font-family:inherit;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color:var(--c-primary-light); box-shadow:0 0 0 3px rgba(99,102,241,.1);
}
.form-row { display:flex; gap:16px; }
.form-row .form-group { flex:1; }
.form-textarea { resize:vertical; min-height:80px; }

/* ---------- 工具栏 ---------- */
.toolbar {
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:16px 28px; flex-wrap:wrap;
}
.toolbar-left, .toolbar-right { display:flex; align-items:center; gap:8px; }
.search-input {
  width:260px; padding:8px 14px 8px 36px; border:1px solid var(--c-border);
  border-radius:var(--radius-sm); font-size:13px; outline:none; background:var(--c-bg-card);
  transition:all var(--transition);
}
.search-input:focus { border-color:var(--c-primary-light); box-shadow:0 0 0 3px rgba(99,102,241,.1); }
.search-wrap { position:relative; }
.search-wrap svg { position:absolute; left:10px; top:50%; transform:translateY(-50%); color:var(--c-text-3); }

/* ---------- 分页 ---------- */
.pagination-row { display:flex; justify-content:flex-end; padding:12px 28px 20px; }

/* ---------- 空状态 ---------- */
.empty-state { text-align:center; padding:60px 20px; color:var(--c-text-3); }
.empty-state svg { width:64px; height:64px; margin-bottom:16px; opacity:.4; }
.empty-state p { font-size:14px; }

/* ---------- 数据面板网格 ---------- */
.dash-grid { display:grid; grid-template-columns:1.5fr 1fr; gap:16px; margin:0 12px 16px; }

/* ---------- 补充 ---------- */
.stat-icon-danger { background:var(--c-danger-bg); color:var(--c-danger); }
.loading-spin {
  width:32px; height:32px; border:3px solid var(--c-border);
  border-top-color: var(--c-primary); border-radius:50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform:rotate(360deg); } }


/* ================================================================
   10 套主题定义
   ================================================================ */

/* 主题2：暗夜蓝 —— 深色护眼，专业氛围 */
body[data-theme="dark-blue"] {
  --c-primary: #6366f1; --c-primary-light: #818cf8; --c-primary-bg: #1e1b4b; --c-primary-hover: #4f46e5;
  --c-success: #10b981; --c-success-light: #34d399; --c-success-bg: #064e3b;
  --c-warning: #f59e0b; --c-warning-light: #fbbf24; --c-warning-bg: #451a03;
  --c-danger: #ef4444; --c-danger-light: #f87171; --c-danger-bg: #450a0a; --c-danger-hover: #dc2626;
  --c-info: #06b6d4; --c-info-light: #22d3ee; --c-info-bg: #083344;
  --c-bg: #0f172a; --c-bg-card: #1e293b; --c-topbar-bg: #1e293b;
  --c-bg-sidebar: #1e1b4b;
  --c-text: #e2e8f0; --c-text-2: #94a3b8; --c-text-3: #64748b;
  --c-border: #334155; --c-border-light: #1e293b;
  --c-sidebar-text: #a5b4fc; --c-sidebar-text-hover: #e0e7ff;
  --c-sidebar-item-hover-bg: rgba(255,255,255,.08); --c-sidebar-item-active-bg: rgba(99,102,241,.2);
  --c-sidebar-item-active-text: #e0e7ff; --c-sidebar-logo-text: #e0e7ff;
  --c-sidebar-logo-sub: #818cf8; --c-sidebar-border: rgba(255,255,255,.08);
  --c-sidebar-scrollbar: rgba(255,255,255,.1); --c-sidebar-group-title: #64748b;
  --shadow: 0 1px 3px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
  --shadow-md: 0 4px 6px rgba(0,0,0,.3); --shadow-lg: 0 10px 15px rgba(0,0,0,.35);
}

/* 主题3：青竹 —— 清新自然，商务绿调 */
body[data-theme="bamboo"] {
  --c-primary: #16a34a; --c-primary-light: #4ade80; --c-primary-bg: #dcfce7; --c-primary-hover: #15803d;
  --c-success: #16a34a; --c-success-light: #4ade80; --c-success-bg: #dcfce7;
  --c-warning: #ca8a04; --c-warning-light: #eab308; --c-warning-bg: #fef9c3;
  --c-danger: #ef4444; --c-danger-light: #f87171; --c-danger-bg: #fef2f2; --c-danger-hover: #dc2626;
  --c-info: #0891b2; --c-info-light: #22d3ee; --c-info-bg: #ecfeff;
  --c-bg: #f0fdf4; --c-bg-card: #ffffff; --c-topbar-bg: #ffffff;
  --c-bg-sidebar: #f0fdf4;
  --c-text: #14532d; --c-text-2: #374151; --c-text-3: #6b7280;
  --c-border: #bbf7d0; --c-border-light: #dcfce7;
  --c-sidebar-text: #374151; --c-sidebar-text-hover: #14532d;
  --c-sidebar-item-hover-bg: #dcfce7; --c-sidebar-item-active-bg: #bbf7d0;
  --c-sidebar-item-active-text: #16a34a; --c-sidebar-logo-text: #14532d;
  --c-sidebar-logo-sub: #4ade80; --c-sidebar-border: #bbf7d0;
  --c-sidebar-scrollbar: #bbf7d0; --c-sidebar-group-title: #6b7280;
}

/* 主题4：暖阳 —— 温暖活力，橙色调 */
body[data-theme="sunset"] {
  --c-primary: #ea580c; --c-primary-light: #fb923c; --c-primary-bg: #fff7ed; --c-primary-hover: #c2410c;
  --c-success: #16a34a; --c-success-light: #4ade80; --c-success-bg: #dcfce7;
  --c-warning: #eab308; --c-warning-light: #facc15; --c-warning-bg: #fef9c3;
  --c-danger: #ef4444; --c-danger-light: #f87171; --c-danger-bg: #fef2f2; --c-danger-hover: #dc2626;
  --c-info: #06b6d4; --c-info-light: #22d3ee; --c-info-bg: #ecfeff;
  --c-bg: #fef2f2; --c-bg-card: #ffffff; --c-topbar-bg: #ffffff;
  --c-bg-sidebar: #fff7ed;
  --c-text: #374151; --c-text-2: #6b7280; --c-text-3: #9ca3af;
  --c-border: #fed7aa; --c-border-light: #fff7ed;
  --c-sidebar-text: #6b7280; --c-sidebar-text-hover: #ea580c;
  --c-sidebar-item-hover-bg: #fed7aa; --c-sidebar-item-active-bg: #fb923c40;
  --c-sidebar-item-active-text: #ea580c; --c-sidebar-logo-text: #374151;
  --c-sidebar-logo-sub: #fb923c; --c-sidebar-border: #fed7aa;
  --c-sidebar-scrollbar: #fed7aa; --c-sidebar-group-title: #9ca3af;
}

/* 主题5：薄暮 —— 雅致灰紫，内敛沉稳 */
body[data-theme="dusk"] {
  --c-primary: #7c3aed; --c-primary-light: #a78bfa; --c-primary-bg: #f5f3ff; --c-primary-hover: #6d28d9;
  --c-success: #059669; --c-success-light: #34d399; --c-success-bg: #ecfdf5;
  --c-warning: #d97706; --c-warning-light: #fbbf24; --c-warning-bg: #fffbeb;
  --c-danger: #e11d48; --c-danger-light: #fb7185; --c-danger-bg: #fef2f2; --c-danger-hover: #be123c;
  --c-info: #0e7490; --c-info-light: #22d3ee; --c-info-bg: #ecfeff;
  --c-bg: #f8fafc; --c-bg-card: #ffffff; --c-topbar-bg: #ffffff;
  --c-bg-sidebar: #2e1065;
  --c-text: #1e1b4b; --c-text-2: #475569; --c-text-3: #94a3b8;
  --c-border: #e2e8f0; --c-border-light: #f1f5f9;
  --c-sidebar-text: #c4b5fd; --c-sidebar-text-hover: #ede9fe;
  --c-sidebar-item-hover-bg: rgba(255,255,255,.08); --c-sidebar-item-active-bg: rgba(124,58,237,.25);
  --c-sidebar-item-active-text: #ede9fe; --c-sidebar-logo-text: #ede9fe;
  --c-sidebar-logo-sub: #a78bfa; --c-sidebar-border: rgba(255,255,255,.08);
  --c-sidebar-scrollbar: rgba(255,255,255,.1); --c-sidebar-group-title: #6b7280;
}

/* 主题6：深海 —— 蓝调专业，稳重可靠 */
body[data-theme="ocean"] {
  --c-primary: #0ea5e9; --c-primary-light: #38bdf8; --c-primary-bg: #e0f2fe; --c-primary-hover: #0284c7;
  --c-success: #10b981; --c-success-light: #34d399; --c-success-bg: #ecfdf5;
  --c-warning: #f59e0b; --c-warning-light: #fbbf24; --c-warning-bg: #fffbeb;
  --c-danger: #ef4444; --c-danger-light: #f87171; --c-danger-bg: #fef2f2; --c-danger-hover: #dc2626;
  --c-info: #06b6d4; --c-info-light: #22d3ee; --c-info-bg: #ecfeff;
  --c-bg: #eff6ff; --c-bg-card: #ffffff; --c-topbar-bg: #ffffff;
  --c-bg-sidebar: #0c4a6e;
  --c-text: #0c4a6e; --c-text-2: #475569; --c-text-3: #94a3b8;
  --c-border: #bfdbfe; --c-border-light: #eff6ff;
  --c-sidebar-text: #bae6fd; --c-sidebar-text-hover: #e0f2fe;
  --c-sidebar-item-hover-bg: rgba(255,255,255,.08); --c-sidebar-item-active-bg: rgba(14,165,233,.25);
  --c-sidebar-item-active-text: #e0f2fe; --c-sidebar-logo-text: #e0f2fe;
  --c-sidebar-logo-sub: #38bdf8; --c-sidebar-border: rgba(255,255,255,.08);
  --c-sidebar-scrollbar: rgba(255,255,255,.1); --c-sidebar-group-title: #64748b;
}

/* 主题7：樱落 —— 柔和粉调，女性化优雅 */
body[data-theme="cherry"] {
  --c-primary: #db2777; --c-primary-light: #f472b6; --c-primary-bg: #fdf2f8; --c-primary-hover: #be185d;
  --c-success: #059669; --c-success-light: #34d399; --c-success-bg: #ecfdf5;
  --c-warning: #d97706; --c-warning-light: #fbbf24; --c-warning-bg: #fffbeb;
  --c-danger: #e11d48; --c-danger-light: #fb7185; --c-danger-bg: #fef2f2; --c-danger-hover: #be123c;
  --c-info: #0e7490; --c-info-light: #22d3ee; --c-info-bg: #ecfeff;
  --c-bg: #fdf2f8; --c-bg-card: #ffffff; --c-topbar-bg: #ffffff;
  --c-bg-sidebar: #fdf2f8;
  --c-text: #500724; --c-text-2: #6b7280; --c-text-3: #9ca3af;
  --c-border: #fbcfe8; --c-border-light: #fdf2f8;
  --c-sidebar-text: #6b7280; --c-sidebar-text-hover: #db2777;
  --c-sidebar-item-hover-bg: #fce7f3; --c-sidebar-item-active-bg: #fbcfe8;
  --c-sidebar-item-active-text: #db2777; --c-sidebar-logo-text: #500724;
  --c-sidebar-logo-sub: #f472b6; --c-sidebar-border: #fbcfe8;
  --c-sidebar-scrollbar: #fbcfe8; --c-sidebar-group-title: #9ca3af;
}

/* 主题8：墨金 —— 奢华黑底，高端商务 */
body[data-theme="noir-gold"] {
  --c-primary: #d4a853; --c-primary-light: #e5c878; --c-primary-bg: #3d2e00; --c-primary-hover: #b8962e;
  --c-success: #22c55e; --c-success-light: #4ade80; --c-success-bg: #052e16;
  --c-warning: #eab308; --c-warning-light: #facc15; --c-warning-bg: #422006;
  --c-danger: #ef4444; --c-danger-light: #f87171; --c-danger-bg: #450a0a; --c-danger-hover: #dc2626;
  --c-info: #06b6d4; --c-info-light: #22d3ee; --c-info-bg: #083344;
  --c-bg: #121212; --c-bg-card: #1a1a1a; --c-topbar-bg: #1a1a1a;
  --c-bg-sidebar: #0a0a0a;
  --c-text: #e5e5e5; --c-text-2: #a3a3a3; --c-text-3: #525252;
  --c-border: #262626; --c-border-light: #171717;
  --c-sidebar-text: #a3a3a3; --c-sidebar-text-hover: #d4a853;
  --c-sidebar-item-hover-bg: rgba(212,168,83,.08); --c-sidebar-item-active-bg: rgba(212,168,83,.18);
  --c-sidebar-item-active-text: #d4a853; --c-sidebar-logo-text: #d4a853;
  --c-sidebar-logo-sub: #e5c878; --c-sidebar-border: #262626;
  --c-sidebar-scrollbar: #262626; --c-sidebar-group-title: #525252;
  --shadow: 0 1px 3px rgba(0,0,0,.5), 0 1px 2px rgba(0,0,0,.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,.4); --shadow-lg: 0 10px 15px rgba(0,0,0,.5);
}

/* 主题9：极简灰 —— 灰度世界，极简主义 */
body[data-theme="mono"] {
  --c-primary: #374151; --c-primary-light: #6b7280; --c-primary-bg: #f3f4f6; --c-primary-hover: #1f2937;
  --c-success: #4b5563; --c-success-light: #6b7280; --c-success-bg: #f3f4f6;
  --c-warning: #6b7280; --c-warning-light: #9ca3af; --c-warning-bg: #f9fafb;
  --c-danger: #374151; --c-danger-light: #6b7280; --c-danger-bg: #f3f4f6; --c-danger-hover: #1f2937;
  --c-info: #4b5563; --c-info-light: #6b7280; --c-info-bg: #f3f4f6;
  --c-bg: #f9fafb; --c-bg-card: #ffffff; --c-topbar-bg: #ffffff;
  --c-bg-sidebar: #1f2937;
  --c-text: #111827; --c-text-2: #4b5563; --c-text-3: #9ca3af;
  --c-border: #d1d5db; --c-border-light: #f3f4f6;
  --c-sidebar-text: #d1d5db; --c-sidebar-text-hover: #f9fafb;
  --c-sidebar-item-hover-bg: rgba(255,255,255,.06); --c-sidebar-item-active-bg: rgba(255,255,255,.12);
  --c-sidebar-item-active-text: #f9fafb; --c-sidebar-logo-text: #f9fafb;
  --c-sidebar-logo-sub: #9ca3af; --c-sidebar-border: rgba(255,255,255,.08);
  --c-sidebar-scrollbar: rgba(255,255,255,.1); --c-sidebar-group-title: #6b7280;
}

/* 主题10：森系 —— 沉稳自然，舒适护眼 */
body[data-theme="forest"] {
  --c-primary: #65a30d; --c-primary-light: #a3e635; --c-primary-bg: #ecfccb; --c-primary-hover: #4d7c0f;
  --c-success: #16a34a; --c-success-light: #4ade80; --c-success-bg: #dcfce7;
  --c-warning: #ca8a04; --c-warning-light: #eab308; --c-warning-bg: #fef9c3;
  --c-danger: #b91c1c; --c-danger-light: #f87171; --c-danger-bg: #fef2f2; --c-danger-hover: #991b1b;
  --c-info: #0891b2; --c-info-light: #22d3ee; --c-info-bg: #ecfeff;
  --c-bg: #f7fee7; --c-bg-card: #ffffff; --c-topbar-bg: #ffffff;
  --c-bg-sidebar: #365314;
  --c-text: #365314; --c-text-2: #4b5563; --c-text-3: #9ca3af;
  --c-border: #d9f99d; --c-border-light: #f7fee7;
  --c-sidebar-text: #bef264; --c-sidebar-text-hover: #ecfccb;
  --c-sidebar-item-hover-bg: rgba(255,255,255,.08); --c-sidebar-item-active-bg: rgba(101,163,13,.25);
  --c-sidebar-item-active-text: #ecfccb; --c-sidebar-logo-text: #ecfccb;
  --c-sidebar-logo-sub: #a3e635; --c-sidebar-border: rgba(255,255,255,.08);
  --c-sidebar-scrollbar: rgba(255,255,255,.1); --c-sidebar-group-title: #6b7280;
}


/* ---------- 响应式 ---------- */
@media (max-width:1024px) {
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  .dash-grid { grid-template-columns:1fr; }
}
@media (max-width:768px) {
  .sidebar { width:60px; }
  .logo-text, .nav-label, .nav-arrow, .nav-group-title { display:none; }
  .nav-item { justify-content:center; padding:12px; }
  .nav-sub .nav-item { padding-left:12px !important; }
  .stats-grid { grid-template-columns:1fr; }
  .page-header { padding:16px; }
  .card { margin:0 12px 12px; }
  .toolbar { padding:12px 16px; flex-direction:column; }
}