/* ============================================================
   LQM 平台通用组件库（ui.css）
   ------------------------------------------------------------
   V2 架构 §4.2 组件清单。class 规范 .lqm-*，BEM 修饰符 --。
   颜色一律使用 theme.css 的 --lqm-* token（验收红线：本文件不得出现颜色字面量）。
   依赖：theme.css（必须先加载）。
   ============================================================ */

/* ---------- Reset ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

/* ---------- 卡片 / 面板 ---------- */
.lqm-card {
  background: var(--lqm-surface);
  border: 1px solid var(--lqm-border);
  border-radius: var(--lqm-radius);
  padding: var(--lqm-space-6);
  transition: border-color var(--lqm-transition), box-shadow var(--lqm-transition);
}
.lqm-card--hover:hover {
  border-color: var(--lqm-accent);
  box-shadow: var(--lqm-shadow-sm);
}
.lqm-panel {
  background: var(--lqm-surface);
  border: 1px solid var(--lqm-border);
  border-radius: var(--lqm-radius);
  padding: var(--lqm-space-4);
}

/* ---------- 按钮 ---------- */
.lqm-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--lqm-radius-sm);
  border: 1px solid var(--lqm-border);
  background: var(--lqm-surface-2);
  color: var(--lqm-text);
  font-size: var(--lqm-font-base);
  font-family: var(--lqm-font-family);
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--lqm-transition);
}
.lqm-btn:hover {
  border-color: var(--lqm-accent);
  color: var(--lqm-accent);
}
.lqm-btn:focus-visible {
  outline: 2px solid var(--lqm-ring);
  outline-offset: 1px;
}
.lqm-btn[disabled], .lqm-btn.disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}
.lqm-btn--primary {
  background: var(--lqm-gradient);
  border: none;
  color: var(--lqm-on-accent);
  font-weight: 600;
}
.lqm-btn--primary:hover {
  color: var(--lqm-on-accent);
  filter: brightness(1.08);
  border-color: transparent;
}
.lqm-btn--ghost {
  background: transparent;
  border: 1px solid var(--lqm-border-strong);
  color: var(--lqm-muted);
}
.lqm-btn--ghost:hover {
  border-color: var(--lqm-accent);
  color: var(--lqm-accent);
  background: transparent;
}
.lqm-btn--danger {
  background: var(--lqm-danger);
  border: none;
  color: var(--lqm-on-accent);
}
.lqm-btn--danger:hover {
  color: var(--lqm-on-accent);
  filter: brightness(1.08);
  border-color: transparent;
}
.lqm-btn--sm {
  padding: 5px 10px;
  font-size: var(--lqm-font-xs);
  border-radius: 6px;
}
.lqm-btn--icon {
  padding: 6px;
  border-radius: var(--lqm-radius-sm);
  line-height: 0;
}
/* V1 兼容别名 */
.lqm-btn-primary {
  background: var(--lqm-gradient);
  border: none;
  color: var(--lqm-on-accent);
}
.lqm-btn-primary:hover {
  color: var(--lqm-on-accent);
  filter: brightness(1.08);
}

/* ---------- 表单 ---------- */
.lqm-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: var(--lqm-space-4);
}
.lqm-label {
  font-size: var(--lqm-font-sm);
  color: var(--lqm-muted);
  font-weight: 500;
}
.lqm-input,
.lqm-textarea,
.lqm-select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--lqm-border);
  border-radius: var(--lqm-radius-sm);
  background: var(--lqm-bg);
  color: var(--lqm-text);
  font-size: var(--lqm-font-base);
  font-family: var(--lqm-font-family);
  outline: none;
  transition: border-color var(--lqm-transition), box-shadow var(--lqm-transition);
}
.lqm-textarea {
  resize: vertical;
  min-height: 90px;
  line-height: 1.6;
}
.lqm-input:focus,
.lqm-textarea:focus,
.lqm-select:focus {
  border-color: var(--lqm-accent);
  box-shadow: 0 0 0 3px var(--lqm-ring);
}
.lqm-input::placeholder,
.lqm-textarea::placeholder {
  color: var(--lqm-faint);
}
.lqm-input--error {
  border-color: var(--lqm-danger);
}
.lqm-input--error:focus {
  border-color: var(--lqm-danger);
  box-shadow: 0 0 0 3px var(--lqm-ring);
}
.lqm-field-msg {
  font-size: var(--lqm-font-xs);
  color: var(--lqm-faint);
  min-height: 16px;
}
.lqm-field-msg--error {
  color: var(--lqm-danger);
}
.lqm-switch {
  position: relative;
  width: 40px;
  height: 22px;
  border-radius: var(--lqm-radius-pill);
  background: var(--lqm-surface-3);
  border: 1px solid var(--lqm-border);
  cursor: pointer;
  transition: background var(--lqm-transition);
  appearance: none;
  -webkit-appearance: none;
  flex-shrink: 0;
}
.lqm-switch:checked {
  background: var(--lqm-accent);
  border-color: var(--lqm-accent);
}
.lqm-switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--lqm-on-accent);
  transition: transform var(--lqm-transition);
}
.lqm-switch:checked::after {
  transform: translateX(18px);
}

/* ---------- 搜索框 ---------- */
.lqm-search {
  position: relative;
  display: flex;
  align-items: center;
}
.lqm-search .lqm-search-icon {
  position: absolute;
  left: 10px;
  color: var(--lqm-faint);
  font-size: 14px;
  pointer-events: none;
  line-height: 1;
}
.lqm-search .lqm-input {
  padding-left: 32px;
  padding-right: 30px;
}
.lqm-search .lqm-search-clear {
  position: absolute;
  right: 6px;
  border: none;
  background: transparent;
  color: var(--lqm-faint);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  padding: 4px;
  border-radius: 50%;
}
.lqm-search .lqm-search-clear:hover {
  color: var(--lqm-text);
  background: var(--lqm-surface-2);
}

/* ---------- 标签 ---------- */
.lqm-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--lqm-radius-pill);
  font-size: var(--lqm-font-xs);
  font-weight: 500;
  line-height: 1.6;
  border: 1px solid transparent;
  white-space: nowrap;
}
.lqm-tag--success {
  background: var(--lqm-accent-soft);
  color: var(--lqm-success);
  border-color: color-mix(in srgb, var(--lqm-success) 35%, transparent);
}
.lqm-tag--warning {
  background: var(--lqm-accent-soft);
  color: var(--lqm-warning);
  border-color: color-mix(in srgb, var(--lqm-warning) 35%, transparent);
}
.lqm-tag--danger {
  background: var(--lqm-accent-soft);
  color: var(--lqm-danger);
  border-color: color-mix(in srgb, var(--lqm-danger) 35%, transparent);
}
.lqm-tag--info {
  background: var(--lqm-accent-soft);
  color: var(--lqm-info);
  border-color: color-mix(in srgb, var(--lqm-info) 35%, transparent);
}
.lqm-tag--accent {
  background: var(--lqm-accent-soft);
  color: var(--lqm-accent);
  border-color: color-mix(in srgb, var(--lqm-accent) 35%, transparent);
}
.lqm-tag--muted {
  background: var(--lqm-surface-3);
  color: var(--lqm-muted);
  border-color: var(--lqm-border);
}

/* ---------- 面包屑 ---------- */
.lqm-crumbs {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--lqm-font-xs);
  color: var(--lqm-faint);
  flex-wrap: wrap;
}
.lqm-crumb {
  color: var(--lqm-faint);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.lqm-crumb:hover { color: var(--lqm-accent); }
.lqm-crumb + .lqm-crumb::before {
  content: "/";
  color: var(--lqm-border-strong);
  margin-right: 4px;
}
.lqm-crumb--current {
  color: var(--lqm-muted);
  font-weight: 500;
}
.lqm-crumb--current:hover { color: var(--lqm-muted); }

/* ---------- 表格 ---------- */
.lqm-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--lqm-font-base);
  color: var(--lqm-text);
}
.lqm-table th,
.lqm-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--lqm-border);
  vertical-align: middle;
}
.lqm-table th {
  color: var(--lqm-muted);
  font-weight: 600;
  font-size: var(--lqm-font-sm);
  background: var(--lqm-surface-2);
  white-space: nowrap;
}
.lqm-table tbody tr:hover {
  background: var(--lqm-hover-bg);
}
.lqm-table--striped tbody tr:nth-child(even) {
  background: var(--lqm-surface-2);
}
.lqm-table--hover tbody tr:hover {
  background: var(--lqm-hover-bg);
}
/* 兼容旧 th/td 直接样式 */
.lqm-table th:first-child, .lqm-table td:first-child { padding-left: var(--lqm-space-4); }
.lqm-table th:last-child, .lqm-table td:last-child { padding-right: var(--lqm-space-4); }

/* ---------- 分页 ---------- */
.lqm-pager {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.lqm-pager-btn {
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--lqm-border);
  border-radius: var(--lqm-radius-sm);
  background: var(--lqm-surface);
  color: var(--lqm-muted);
  font-size: var(--lqm-font-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--lqm-transition);
}
.lqm-pager-btn:hover:not(:disabled):not(.active) {
  border-color: var(--lqm-accent);
  color: var(--lqm-accent);
}
.lqm-pager-btn.active {
  background: var(--lqm-gradient);
  border-color: transparent;
  color: var(--lqm-on-accent);
  font-weight: 600;
}
.lqm-pager-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.lqm-pager-info {
  font-size: var(--lqm-font-xs);
  color: var(--lqm-faint);
  margin-left: auto;
}

/* ---------- 弹窗 ---------- */
.lqm-modal-mask {
  position: fixed;
  inset: 0;
  background: var(--lqm-overlay);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--lqm-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.lqm-modal {
  width: min(480px, 94vw);
  max-height: 86vh;
  overflow-y: auto;
  background: var(--lqm-surface);
  border: 1px solid var(--lqm-border);
  border-radius: var(--lqm-radius-lg);
  box-shadow: var(--lqm-shadow-lg);
  animation: lqm-modal-in 0.18s ease;
}
@keyframes lqm-modal-in {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}
.lqm-modal__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 22px 0;
}
.lqm-modal__head h3 {
  margin: 0;
  font-size: var(--lqm-font-lg);
  font-weight: 600;
  color: var(--lqm-text);
}
.lqm-modal__close {
  border: none;
  background: transparent;
  color: var(--lqm-faint);
  font-size: 18px;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  border-radius: var(--lqm-radius-sm);
}
.lqm-modal__close:hover {
  color: var(--lqm-text);
  background: var(--lqm-surface-2);
}
.lqm-modal__body {
  padding: 16px 22px;
  color: var(--lqm-muted);
  font-size: var(--lqm-font-base);
  line-height: 1.65;
}
.lqm-modal__foot {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 4px 22px 20px;
}

/* ---------- 下拉菜单 ---------- */
.lqm-dropdown {
  position: relative;
  display: inline-block;
}
.lqm-dropdown__menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 160px;
  background: var(--lqm-surface);
  border: 1px solid var(--lqm-border);
  border-radius: var(--lqm-radius);
  box-shadow: var(--lqm-shadow);
  padding: 6px;
  z-index: var(--lqm-z-modal);
  display: none;
}
.lqm-dropdown.open .lqm-dropdown__menu {
  display: block;
  animation: lqm-dropdown-in 0.14s ease;
}
@keyframes lqm-dropdown-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: none; }
}
.lqm-dropdown__item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: var(--lqm-text);
  font-size: var(--lqm-font-sm);
  font-family: var(--lqm-font-family);
  text-align: left;
  border-radius: var(--lqm-radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--lqm-transition);
}
.lqm-dropdown__item:hover {
  background: var(--lqm-hover-bg);
  color: var(--lqm-accent);
}

/* ---------- Tabs ---------- */
.lqm-tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--lqm-border);
  flex-wrap: wrap;
}
.lqm-tab {
  padding: 9px 16px;
  border: none;
  background: transparent;
  color: var(--lqm-muted);
  font-size: var(--lqm-font-base);
  font-family: var(--lqm-font-family);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--lqm-transition);
}
.lqm-tab:hover {
  color: var(--lqm-text);
}
.lqm-tab.active {
  color: var(--lqm-accent);
  border-bottom-color: var(--lqm-accent);
  font-weight: 600;
}

/* ---------- 空态 ---------- */
.lqm-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 56px 24px;
  text-align: center;
  color: var(--lqm-faint);
}
.lqm-empty .lqm-empty-icon {
  font-size: 44px;
  line-height: 1;
}
.lqm-empty .lqm-empty-title {
  font-size: var(--lqm-font-md);
  font-weight: 600;
  color: var(--lqm-muted);
}
.lqm-empty .lqm-empty-desc {
  font-size: var(--lqm-font-sm);
  color: var(--lqm-faint);
  max-width: 380px;
  line-height: 1.6;
}

/* ---------- 骨架屏 ---------- */
.lqm-skeleton {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 8px 0;
}
.lqm-skeleton-item {
  border-radius: var(--lqm-radius-sm);
  background: linear-gradient(90deg,
    var(--lqm-surface-2) 25%,
    var(--lqm-surface-3) 50%,
    var(--lqm-surface-2) 75%);
  background-size: 200% 100%;
  animation: lqm-shimmer 1.4s infinite;
}
.lqm-skeleton--text { height: 14px; }
.lqm-skeleton--rect { height: 80px; }
.lqm-skeleton--circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}
@keyframes lqm-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---------- 错误卡片 ---------- */
.lqm-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 24px;
  text-align: center;
}
.lqm-error .lqm-error-icon {
  font-size: 40px;
  line-height: 1;
}
.lqm-error .lqm-error-title {
  font-size: var(--lqm-font-md);
  font-weight: 600;
  color: var(--lqm-danger);
}
.lqm-error .lqm-error-msg {
  font-size: var(--lqm-font-sm);
  color: var(--lqm-muted);
  max-width: 420px;
  line-height: 1.6;
}

/* ---------- Toast ---------- */
.lqm-toast-wrap {
  position: fixed;
  top: calc(var(--lqm-topbar-h) + 12px);
  right: 16px;
  z-index: var(--lqm-z-toast);
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: min(360px, 92vw);
  pointer-events: none;
}
.lqm-toast {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 11px 14px;
  border-radius: var(--lqm-radius);
  background: var(--lqm-surface);
  border: 1px solid var(--lqm-border);
  box-shadow: var(--lqm-shadow);
  color: var(--lqm-text);
  font-size: var(--lqm-font-sm);
  line-height: 1.5;
  animation: lqm-toast-in 0.2s ease;
}
.lqm-toast.hide {
  opacity: 0;
  transform: translateY(-6px);
  transition: all 0.25s ease;
}
@keyframes lqm-toast-in {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: none; }
}
.lqm-toast--success { border-left: 3px solid var(--lqm-success); }
.lqm-toast--error   { border-left: 3px solid var(--lqm-danger); }
.lqm-toast--warn    { border-left: 3px solid var(--lqm-warning); }
.lqm-toast--info    { border-left: 3px solid var(--lqm-info); }
.lqm-toast .lqm-toast-close {
  margin-left: auto;
  border: none;
  background: transparent;
  color: var(--lqm-faint);
  cursor: pointer;
  font-size: 14px;
  padding: 0 2px;
  line-height: 1;
  flex-shrink: 0;
}

/* ---------- 工具提示 ---------- */
.lqm-tip {
  position: relative;
  cursor: help;
  border-bottom: 1px dashed var(--lqm-border-strong);
}
.lqm-tip::after {
  content: attr(data-tip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%) translateY(2px);
  background: var(--lqm-text);
  color: var(--lqm-bg);
  font-size: var(--lqm-font-xs);
  padding: 5px 9px;
  border-radius: var(--lqm-radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 0.15s ease;
  z-index: var(--lqm-z-modal);
}
.lqm-tip:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- 页头（nav.js 注入） ---------- */
.lqm-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--lqm-border);
  background: var(--lqm-topbar-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  flex-wrap: wrap;
}
.lqm-page-title {
  margin: 2px 0 0;
  font-size: var(--lqm-font-xl);
  font-weight: 700;
  color: var(--lqm-text);
  letter-spacing: 0.2px;
}
.lqm-page-desc {
  font-size: var(--lqm-font-sm);
  color: var(--lqm-muted);
  margin-top: 3px;
}
.lqm-page-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---------- 工具类 ---------- */
.lqm-flex { display: flex; }
.lqm-flex-col { display: flex; flex-direction: column; }
.lqm-items-center { align-items: center; }
.lqm-justify-between { justify-content: space-between; }
.lqm-gap-1 { gap: var(--lqm-space-1); }
.lqm-gap-2 { gap: var(--lqm-space-2); }
.lqm-gap-3 { gap: var(--lqm-space-3); }
.lqm-gap-4 { gap: var(--lqm-space-4); }
.lqm-mt-1 { margin-top: var(--lqm-space-1); }
.lqm-mt-2 { margin-top: var(--lqm-space-2); }
.lqm-mt-3 { margin-top: var(--lqm-space-3); }
.lqm-mt-4 { margin-top: var(--lqm-space-4); }
.lqm-mb-1 { margin-bottom: var(--lqm-space-1); }
.lqm-mb-2 { margin-bottom: var(--lqm-space-2); }
.lqm-mb-3 { margin-bottom: var(--lqm-space-3); }
.lqm-mb-4 { margin-bottom: var(--lqm-space-4); }
.lqm-text-muted { color: var(--lqm-muted); }
.lqm-text-faint { color: var(--lqm-faint); }
.lqm-text-accent { color: var(--lqm-accent); }
.lqm-text-danger { color: var(--lqm-danger); }
.lqm-text-success { color: var(--lqm-success); }
.lqm-text-center { text-align: center; }
.lqm-hidden { display: none !important; }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .lqm-page-header {
    padding: 10px 14px;
    flex-direction: column;
    align-items: flex-start;
  }
  .lqm-modal { width: 96vw; }
}