/* ==========================================================================
   Automy 奥托迈 · 通用组件样式
   按钮 / 卡片 / 表格 / 徽章 / 提示框 / 表单 / 导航 等
   ========================================================================== */

/* ------------------------------------------------------------------
   按钮
   ------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 18px;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: var(--color-bg-muted);
  color: var(--color-text);
  transition: all var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}
.btn:hover { background: var(--color-border); color: var(--color-text); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-secondary);
  color: var(--color-text-inverse);
  border-color: var(--color-secondary);
}
.btn-secondary:hover {
  background: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
  color: var(--color-text-inverse);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-hover);
}

.btn-danger {
  background: var(--color-danger);
  color: var(--color-text-inverse);
  border-color: var(--color-danger);
}
.btn-danger:hover {
  background: #DC2626;
  border-color: #DC2626;
  color: var(--color-text-inverse);
}

.btn-success {
  background: var(--color-success);
  color: var(--color-text-inverse);
  border-color: var(--color-success);
}

.btn-link {
  background: transparent;
  color: var(--color-primary);
  padding: 0;
  border: none;
  border-radius: 0;
}
.btn-link:hover { color: var(--color-primary-hover); text-decoration: underline; }

.btn-sm {
  padding: 6px 12px;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}
.btn-lg {
  padding: 14px 24px;
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}
.btn-icon {
  padding: 8px;
  width: 36px;
  height: 36px;
}
.btn-icon.btn-sm { width: 30px; height: 30px; }
.btn-icon.btn-lg { width: 44px; height: 44px; }

.btn-block { display: flex; width: 100%; }

/* 按钮组 */
.btn-group {
  display: inline-flex;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.btn-group .btn {
  border-radius: 0;
  border: none;
  border-right: 1px solid var(--color-border);
}
.btn-group .btn:last-child { border-right: none; }

/* ------------------------------------------------------------------
   卡片
   ------------------------------------------------------------------ */
.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.card:hover {
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-md);
}
.card-hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.card-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.card-title { font-size: var(--font-size-lg); font-weight: 600; }
.card-subtitle { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin-top: 2px; }
.card-body { padding: var(--space-6); }
.card-body-sm { padding: var(--space-4); }
.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  background: var(--color-bg-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}
.card-body p:last-child { margin-bottom: 0; }
.card-divider {
  height: 1px;
  background: var(--color-border-light);
  margin: 0 var(--space-6);
}

/* 卡片底部链接 */
.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-weight: 500;
  font-size: var(--font-size-sm);
  transition: gap var(--transition-fast);
}
.card-link:hover { gap: var(--space-3); }
.card-link::after { content: '→'; font-weight: 600; }

/* ------------------------------------------------------------------
   表格
   ------------------------------------------------------------------ */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-size: var(--font-size-sm);
}
.table thead { background: var(--color-bg-subtle); }
.table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}
.table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
}
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: var(--color-bg-subtle); }
.table-striped tbody tr:nth-child(even) { background: var(--color-bg-subtle); }
.table-bordered th, .table-bordered td { border: 1px solid var(--color-border-light); }
.table-compact th, .table-compact td { padding: var(--space-2) var(--space-3); }

/* ------------------------------------------------------------------
   徽章 / 标签
   ------------------------------------------------------------------ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-full);
  background: var(--color-bg-muted);
  color: var(--color-text-secondary);
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.badge-primary { background: var(--color-primary-light); color: var(--color-primary-active); }
.badge-success { background: var(--color-success-light); color: var(--color-success); }
.badge-warning { background: var(--color-warning-light); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-light); color: var(--color-danger); }
.badge-info { background: var(--color-info-light); color: var(--color-info); }
.badge-secondary { background: var(--color-secondary-light); color: var(--color-secondary); }
.badge-dot::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.badge-lg { padding: 4px 12px; font-size: 12px; }
.badge-sm { padding: 1px 6px; font-size: 10px; }

/* 状态点 */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-tertiary);
  margin-right: var(--space-2);
}
.status-dot.success { background: var(--color-success); }
.status-dot.warning { background: var(--color-warning); }
.status-dot.danger { background: var(--color-danger); }
.status-dot.info { background: var(--color-info); }
.status-dot.pulse { animation: pulse 1.6s ease-in-out infinite; }

/* ------------------------------------------------------------------
   提示框 / Alert
   ------------------------------------------------------------------ */
.alert {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
}
.alert__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  font-size: 18px;
  line-height: 20px;
  text-align: center;
}
.alert__body { flex: 1; }
.alert__title { font-weight: 600; margin-bottom: 2px; }
.alert__desc { color: var(--color-text-secondary); }
.alert__close {
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: 0 4px;
}
.alert-info { background: var(--color-info-light); border-color: var(--color-info-border); color: var(--color-info); }
.alert-info .alert__title, .alert-info .alert__desc { color: #1E40AF; }
.alert-success { background: var(--color-success-light); border-color: var(--color-success-border); }
.alert-success .alert__title, .alert-success .alert__desc { color: #065F46; }
.alert-warning { background: var(--color-warning-light); border-color: var(--color-warning-border); }
.alert-warning .alert__title, .alert-warning .alert__desc { color: #92400E; }
.alert-danger { background: var(--color-danger-light); border-color: var(--color-danger-border); }
.alert-danger .alert__title, .alert-danger .alert__desc { color: #991B1B; }
[data-theme="dark"] .alert-info .alert__title, [data-theme="dark"] .alert-info .alert__desc { color: var(--color-info); }
[data-theme="dark"] .alert-success .alert__title, [data-theme="dark"] .alert-success .alert__desc { color: var(--color-success); }
[data-theme="dark"] .alert-warning .alert__title, [data-theme="dark"] .alert-warning .alert__desc { color: var(--color-warning); }
[data-theme="dark"] .alert-danger .alert__title, [data-theme="dark"] .alert-danger .alert__desc { color: var(--color-danger); }

/* ------------------------------------------------------------------
   折叠块 details/summary
   ------------------------------------------------------------------ */
.collapse {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-elevated);
  margin-bottom: var(--space-3);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.collapse + .collapse { margin-top: -1px; }
.collapse[open] { border-color: var(--color-primary-border); }
.collapse > summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-4) var(--space-5);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  user-select: none;
  transition: background var(--transition-fast);
}
.collapse > summary:hover { background: var(--color-bg-subtle); }
.collapse > summary::-webkit-details-marker { display: none; }
.collapse > summary::after {
  content: '▸';
  font-size: 12px;
  color: var(--color-text-tertiary);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}
.collapse[open] > summary::after { transform: rotate(90deg); }
.collapse > summary > span { flex: 1; }
.collapse__body {
  padding: 0 var(--space-5) var(--space-5);
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border-light);
  padding-top: var(--space-4);
}

/* ------------------------------------------------------------------
   代码块
   ------------------------------------------------------------------ */
.code-block {
  background: #0F172A;
  color: #E2E8F0;
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: var(--line-snug);
  overflow-x: auto;
  margin: var(--space-4) 0;
  position: relative;
}
.code-block__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: -16px -20px 12px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 12px;
  color: #94A3B8;
}
.code-block__copy {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #94A3B8;
  border-radius: var(--radius-xs);
  padding: 2px 8px;
  font-size: 11px;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.code-block__copy:hover { color: #E2E8F0; border-color: #94A3B8; }

/* 简易语法高亮占位 */
.code-block .token-keyword { color: #C084FC; }
.code-block .token-string { color: #FCD34D; }
.code-block .token-comment { color: #64748B; font-style: italic; }
.code-block .token-function { color: #60A5FA; }
.code-block .token-number { color: #F87171; }
.code-block .token-property { color: #5EEAD4; }

/* 内联代码 */
code:not(pre code) {
  padding: 2px 6px;
  background: var(--color-bg-muted);
  border-radius: var(--radius-xs);
  color: var(--color-primary-active);
  font-family: var(--font-mono);
  font-size: 0.88em;
}

/* ------------------------------------------------------------------
   表单控件
   ------------------------------------------------------------------ */
.input, .textarea, .select {
  width: 100%;
  padding: 9px 12px;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}
.input::placeholder, .textarea::placeholder { color: var(--color-text-tertiary); }
.input:hover, .textarea:hover, .select:hover { border-color: var(--color-border-strong); }
.input:focus, .textarea:focus, .select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
.textarea { resize: vertical; min-height: 80px; line-height: var(--line-normal); }
.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394A3B8' d='M3 4.5l3 3 3-3'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}

.form-group { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}
.form-hint {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}
.form-error {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}
.input-sm { padding: 5px 10px; font-size: var(--font-size-sm); }
.input-lg { padding: 12px 16px; font-size: var(--font-size-lg); }
.input-error { border-color: var(--color-danger); }
.input-error:focus { box-shadow: 0 0 0 3px var(--color-danger-light); }

/* 复选框 */
.checkbox {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  user-select: none;
  font-size: var(--font-size-base);
}
.checkbox input[type="checkbox"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-xs);
  background: var(--color-bg-elevated);
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.checkbox input[type="checkbox"]:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.checkbox input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 5px;
  width: 5px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.checkbox input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* 单选框 */
.radio { display: inline-flex; align-items: center; gap: var(--space-2); cursor: pointer; }
.radio input[type="radio"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--color-border-strong);
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
}
.radio input[type="radio"]:checked {
  border-color: var(--color-primary);
  border-width: 5px;
}

/* 开关 switch */
.switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
  cursor: pointer;
  flex-shrink: 0;
}
.switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.switch__track {
  position: absolute;
  inset: 0;
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}
.switch__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: var(--color-text-inverse);
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}
.switch input:checked + .switch__track { background: var(--color-primary); }
.switch input:checked + .switch__track .switch__thumb { transform: translateX(18px); }
.switch input:focus-visible + .switch__track { box-shadow: 0 0 0 3px var(--color-primary-light); }

/* ------------------------------------------------------------------
   顶栏 topbar
   ------------------------------------------------------------------ */
.topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
  height: var(--topbar-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), border-color var(--transition-base);
}
[data-theme="dark"] .topbar {
  background: rgba(11, 18, 32, 0.85);
}
.topbar__inner {
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

/* 文字 Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}
.logo:hover { color: var(--color-text); }
.logo__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  color: white;
  font-weight: 900;
  font-size: 16px;
  letter-spacing: -0.04em;
  box-shadow: var(--shadow-primary);
  position: relative;
  overflow: hidden;
}
.logo__mark::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent 50%);
}
.logo__text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--color-primary);
}

/* 顶栏导航 */
.topbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
}
.nav-item {
  padding: 8px 14px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}
.nav-item:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}
.nav-item.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

/* 主题切换按钮 */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  background: var(--color-bg-subtle);
  color: var(--color-primary);
  border-color: var(--color-primary-border);
}
.theme-toggle__icon {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
[data-theme="dark"] .theme-toggle__icon--sun { display: inline-flex; }
[data-theme="dark"] .theme-toggle__icon--moon { display: none; }
.theme-toggle__icon--sun { display: none; }

/* 搜索按钮 */
.search-trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 10px 6px 12px;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.search-trigger:hover {
  background: var(--color-bg-muted);
  border-color: var(--color-border-strong);
  color: var(--color-text-secondary);
}
.search-trigger__kbd {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 1px 6px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--color-text-tertiary);
}

/* 汉堡菜单按钮 */
.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-text);
}
.menu-toggle__line {
  display: block;
  width: 16px;
  height: 1.5px;
  background: currentColor;
  position: relative;
}
.menu-toggle__line::before,
.menu-toggle__line::after {
  content: '';
  position: absolute;
  left: 0;
  width: 16px;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--transition-fast);
}
.menu-toggle__line::before { top: -5px; }
.menu-toggle__line::after { top: 5px; }
.menu-toggle[aria-expanded="true"] .menu-toggle__line { background: transparent; }
.menu-toggle[aria-expanded="true"] .menu-toggle__line::before { transform: rotate(45deg); top: 0; }
.menu-toggle[aria-expanded="true"] .menu-toggle__line::after { transform: rotate(-45deg); top: 0; }

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: var(--z-overlay);
  padding: var(--space-4);
  overflow-y: auto;
  flex-direction: column;
  gap: var(--space-1);
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-item {
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-md);
}

/* ------------------------------------------------------------------
   侧边栏
   ------------------------------------------------------------------ */
.sidebar {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}
.sidebar__title {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-tertiary);
  padding: 0 var(--space-3) var(--space-2);
}
.sidebar__group { margin-bottom: var(--space-4); }
.sidebar__group:last-child { margin-bottom: 0; }
.sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 7px 12px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
  border-left: 2px solid transparent;
  margin-left: -2px;
}
.sidebar-item:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}
.sidebar-item.active {
  background: var(--color-primary-light);
  color: var(--color-primary-active);
  border-left-color: var(--color-primary);
  font-weight: 500;
}
.sidebar-item__icon { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.8; }
.sidebar-item__count {
  margin-left: auto;
  font-size: 11px;
  padding: 1px 6px;
  background: var(--color-bg-muted);
  border-radius: var(--radius-full);
  color: var(--color-text-tertiary);
}
.sidebar-item.active .sidebar-item__count { background: var(--color-primary); color: white; }

.sidebar__section { padding-top: var(--space-3); border-top: 1px solid var(--color-border-light); margin-top: var(--space-3); }

/* 子目录可折叠 */
.sidebar__children { padding-left: var(--space-4); max-height: 0; overflow: hidden; transition: max-height var(--transition-base); }
.sidebar-item.expanded + .sidebar__children { max-height: 600px; }

/* ------------------------------------------------------------------
   面包屑
   ------------------------------------------------------------------ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  flex-wrap: wrap;
}
.breadcrumb li { display: inline-flex; align-items: center; }
.breadcrumb li::after {
  content: '/';
  margin: 0 var(--space-2);
  color: var(--color-text-tertiary);
  opacity: 0.6;
}
.breadcrumb li:last-child::after { display: none; }
.breadcrumb li:last-child { color: var(--color-text); font-weight: 500; }
.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb a:hover { color: var(--color-primary); }

/* ------------------------------------------------------------------
   标签页 tabs
   ------------------------------------------------------------------ */
.tabs {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
  overflow-x: auto;
}
.tab-item {
  padding: 10px 16px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  margin-bottom: -1px;
}
.tab-item:hover { color: var(--color-text); }
.tab-item.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn var(--transition-base); }

/* 标签页 - 胶囊样式 */
.tabs-pills { border-bottom: none; gap: var(--space-2); margin-bottom: var(--space-6); }
.tabs-pills .tab-item {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border-bottom: none;
  background: var(--color-bg-subtle);
}
.tabs-pills .tab-item.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

/* ------------------------------------------------------------------
   头像
   ------------------------------------------------------------------ */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: white;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.avatar-sm { width: 28px; height: 28px; font-size: 11px; }
.avatar-lg { width: 48px; height: 48px; font-size: 18px; }
.avatar-xl { width: 72px; height: 72px; font-size: 28px; }
.avatar-square { border-radius: var(--radius-md); }
.avatar-group { display: inline-flex; }
.avatar-group .avatar {
  border: 2px solid var(--color-bg);
  margin-left: -8px;
}
.avatar-group .avatar:first-child { margin-left: 0; }

/* ------------------------------------------------------------------
   空状态
   ------------------------------------------------------------------ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
  color: var(--color-text-secondary);
}
.empty-state__icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-muted);
  border-radius: var(--radius-full);
  font-size: 28px;
  margin-bottom: var(--space-4);
  color: var(--color-text-tertiary);
}
.empty-state__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.empty-state__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  max-width: 360px;
  margin-bottom: var(--space-4);
}

/* ------------------------------------------------------------------
   加载
   ------------------------------------------------------------------ */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }
.spinner-sm { width: 14px; height: 14px; border-width: 1.5px; }
.spinner-center {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
}

.skeleton {
  background: var(--color-bg-muted);
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
}
.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 1.6s infinite;
}
[data-theme="dark"] .skeleton::after {
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
}
.skeleton-text { height: 12px; margin-bottom: var(--space-2); }
.skeleton-text-sm { height: 10px; width: 60%; }
.skeleton-title { height: 20px; width: 50%; margin-bottom: var(--space-4); }
.skeleton-avatar { width: 36px; height: 36px; border-radius: 50%; }
.skeleton-block { height: 80px; border-radius: var(--radius-md); }

/* ------------------------------------------------------------------
   模态弹窗
   ------------------------------------------------------------------ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--color-bg-overlay);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.modal-backdrop.open { display: flex; opacity: 1; }
.modal {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xl);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.modal__header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal__title { font-size: var(--font-size-lg); font-weight: 600; }
.modal__close {
  background: transparent;
  border: none;
  width: 28px;
  height: 28px;
  font-size: 22px;
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-xs);
}
.modal__close:hover { background: var(--color-bg-subtle); color: var(--color-text); }
.modal__body { padding: var(--space-6); overflow-y: auto; flex: 1; }
.modal__footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ------------------------------------------------------------------
   搜索弹窗
   ------------------------------------------------------------------ */
.search-modal { max-width: 640px; }
.search-modal .modal__body { padding: 0; }
.search-input-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-light);
}
.search-input-wrap__icon { color: var(--color-text-tertiary); width: 18px; height: 18px; flex-shrink: 0; }
.search-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: var(--font-size-md);
  color: var(--color-text);
  outline: none;
}
.search-input::placeholder { color: var(--color-text-tertiary); }
.search-results {
  max-height: 420px;
  overflow-y: auto;
  padding: var(--space-2);
}
.search-result-group__label {
  padding: var(--space-2) var(--space-3);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-tertiary);
}
.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  color: var(--color-text);
  transition: background var(--transition-fast);
}
.search-result-item:hover, .search-result-item.highlighted {
  background: var(--color-bg-subtle);
}
.search-result-item__icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--color-primary-active);
  flex-shrink: 0;
  font-size: 16px;
}
.search-result-item__title { font-size: var(--font-size-sm); font-weight: 500; }
.search-result-item__desc { font-size: var(--font-size-xs); color: var(--color-text-tertiary); }
.search-result-item__path { font-size: 11px; color: var(--color-text-tertiary); font-family: var(--font-mono); }
.search-empty {
  padding: var(--space-12) var(--space-4);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

/* ------------------------------------------------------------------
   页脚
   ------------------------------------------------------------------ */
.footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
  padding: var(--space-12) 0 var(--space-6);
  margin-top: var(--space-20);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}
.footer__brand-desc {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  max-width: 320px;
  line-height: var(--line-relaxed);
  margin-top: var(--space-3);
}
.footer__col-title {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.footer__list { list-style: none; padding: 0; margin: 0; }
.footer__list li { margin-bottom: var(--space-2); }
.footer__list a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}
.footer__list a:hover { color: var(--color-primary); }
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
  flex-wrap: wrap;
  gap: var(--space-3);
}
.footer__social { display: flex; gap: var(--space-3); }
.footer__social a {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}
.footer__social a:hover { color: var(--color-primary); border-color: var(--color-primary); }

/* ------------------------------------------------------------------
   Toast 通知
   ------------------------------------------------------------------ */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 360px;
}
.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-sm);
  animation: fadeIn var(--transition-base);
}
.toast.toast-success { border-left-color: var(--color-success); }
.toast.toast-warning { border-left-color: var(--color-warning); }
.toast.toast-danger { border-left-color: var(--color-danger); }

/* ------------------------------------------------------------------
   分页
   ------------------------------------------------------------------ */
.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  justify-content: center;
  padding: var(--space-4) 0;
}
.pagination__btn {
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.pagination__btn:hover:not(:disabled) {
  background: var(--color-bg-subtle);
  border-color: var(--color-primary-border);
  color: var(--color-primary);
}
.pagination__btn.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}
.pagination__btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ------------------------------------------------------------------
   时间线 / 时间轴
   ------------------------------------------------------------------ */
.timeline {
  position: relative;
  padding-left: var(--space-8);
  margin: var(--space-6) 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--color-border);
}
.timeline-item {
  position: relative;
  padding-bottom: var(--space-8);
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -29px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  z-index: 1;
}
.timeline-item.completed::before { background: var(--color-primary); }
.timeline-item.current::before {
  box-shadow: 0 0 0 4px var(--color-primary-light);
  animation: pulse 2s ease-in-out infinite;
}
.timeline-item__time {
  font-size: 11px;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.timeline-item__title { font-size: var(--font-size-md); font-weight: 600; margin-bottom: var(--space-1); }
.timeline-item__desc { color: var(--color-text-secondary); font-size: var(--font-size-sm); }

/* ------------------------------------------------------------------
   工具提示 tooltip (用 data-tooltip 属性)
   ------------------------------------------------------------------ */
[data-tooltip] { position: relative; }
[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 6px;
  padding: 4px 10px;
  background: var(--color-text);
  color: var(--color-text-inverse);
  font-size: 11px;
  border-radius: var(--radius-xs);
  white-space: nowrap;
  z-index: var(--z-overlay);
  pointer-events: none;
  box-shadow: var(--shadow-md);
}

/* ------------------------------------------------------------------
   分隔符
   ------------------------------------------------------------------ */
.divider {
  height: 1px;
  background: var(--color-border-light);
  margin: var(--space-6) 0;
  border: none;
}
.divider-vertical {
  width: 1px;
  height: 16px;
  background: var(--color-border);
  margin: 0 var(--space-2);
  display: inline-block;
  vertical-align: middle;
}
.divider-text {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: var(--space-6) 0;
}
.divider-text::before, .divider-text::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border-light);
}

/* ------------------------------------------------------------------
   标签 chips
   ------------------------------------------------------------------ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  cursor: default;
  transition: all var(--transition-fast);
}
.chip-hover:hover { border-color: var(--color-primary-border); color: var(--color-primary); }
.chip-close {
  background: none;
  border: none;
  padding: 0 0 0 4px;
  cursor: pointer;
  color: inherit;
  font-size: 14px;
  line-height: 1;
}
.chip-close:hover { color: var(--color-danger); }

/* ------------------------------------------------------------------
   进度条
   ------------------------------------------------------------------ */
.progress {
  width: 100%;
  height: 6px;
  background: var(--color-bg-muted);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress__bar {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}
.progress-sm { height: 4px; }
.progress-lg { height: 10px; }

/* ------------------------------------------------------------------
   响应式顶栏
   ------------------------------------------------------------------ */
@media (max-width: 900px) {
  .topbar__nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .search-trigger__text { display: none; }
}
@media (max-width: 600px) {
  .topbar__inner { gap: var(--space-3); padding: 0 var(--space-4); }
  .logo__text { display: none; }
  .footer__grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .footer__bottom { flex-direction: column; text-align: center; }
}

/* ------------------------------------------------------------------
   工具类 - 显示辅助
   ------------------------------------------------------------------ */
.cursor-pointer { cursor: pointer; }
.user-select-none { user-select: none; }
.no-underline { text-decoration: none; }
.list-none { list-style: none; padding: 0; }
.overflow-hidden { overflow: hidden; }
.position-relative { position: relative; }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.rounded { border-radius: var(--radius-md); }
.rounded-full { border-radius: var(--radius-full); }