/* FB.Admin 全局样式 —— 详见 FB.Admin/Doc/md/UI 设计规范.md
 * 组件分节顺序与设计文档 §四 一致 */

@import url('tokens.css');

/* ============ Reset / 基础 ============ */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  font-size: var(--fs-md);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { color: var(--color-text); font-weight: var(--fw-semibold); }
.muted { color: var(--color-text-muted); font-size: var(--fs-sm); }

/* ============ §三 布局（app / sidebar / topbar / page） ============ */
.app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--color-sidebar-bg);
  color: var(--color-sidebar-fg);
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
}
.sidebar__logo {
  height: 56px;
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid #2C3E50;
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
}
.sidebar__logo a { color: #fff; }
.sidebar__logo a:hover { text-decoration: none; }
.sidebar__nav { padding: var(--space-md) 0; flex: 1; overflow-y: auto; }
.sidebar__group { margin-bottom: var(--space-sm); }
.sidebar__group-title {
  padding: var(--space-sm) 20px 4px;
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: var(--fw-medium);
  user-select: none;
}
.sidebar__nav a {
  display: block;
  padding: 10px 20px;
  color: var(--color-sidebar-fg);
  font-size: var(--fs-md);
  border-left: 3px solid transparent;
}
.sidebar__nav a:hover {
  background: var(--color-sidebar-hover);
  color: #fff;
  text-decoration: none;
}
.sidebar__nav a.active {
  background: var(--color-sidebar-active);
  color: #fff;
  border-left-color: var(--color-primary);
  font-weight: var(--fw-medium);
}

.content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.topbar {
  height: 56px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-md);
}
.topbar__title { font-weight: var(--fw-medium); color: var(--color-text); }
.topbar__right { color: var(--color-text-muted); font-size: var(--fs-sm); }
.topbar__right a { color: var(--color-text-muted); }
.topbar__right a:hover { color: var(--color-primary); }
.topbar__sep { margin: 0 var(--space-sm); color: var(--color-border-strong); }
.topbar__user { color: var(--color-text); }

.page {
  padding: var(--space-xl);
  width: 100%;
}
.page > * + * { margin-top: var(--space-lg); }

/* ============ §4.1 .page-header（面包屑 + 标题）============ */
.page-header { }
.crumbs {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}
.crumbs a { color: var(--color-text-muted); }
.crumbs a:hover { color: var(--color-primary); text-decoration: none; }
.crumbs__sep { margin: 0 var(--space-sm); color: var(--color-text-dim); }
.crumbs__current { color: var(--color-text); }
.page-header__title {
  margin: 6px 0 0;
  font-size: var(--fs-2xl);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}

/* ============ §4.2 .card ============ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  box-shadow: var(--shadow-sm);
}
.card--compact { padding: var(--space-md) var(--space-lg); }
.card--flat { box-shadow: none; }

/* ============ §4.3 .filter-bar ============ */
.filter-bar {
  display: flex;
  align-items: flex-end;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.filter-bar__fields {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
  flex: 1;
}
.filter-bar__actions {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}
.field {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}
.field__label {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  min-width: 56px;
  text-align: right;
}
.field__sep {
  color: var(--color-text-muted);
  margin: 0 var(--space-xs);
}
.field--range .control { width: 140px; }

/* ============ .control（输入控件公共样式）============ */
.control {
  height: var(--control-height);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 0 var(--space-md);
  font-size: var(--fs-md);
  color: var(--color-text);
  background: var(--color-surface);
  outline: none;
  transition: border-color 120ms ease, box-shadow 120ms ease;
  min-width: 0;
}
.control:focus {
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}
.control:disabled {
  background: var(--color-neutral-soft);
  color: var(--color-text-muted);
  cursor: not-allowed;
}
select.control {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 28px;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-text-muted) 50%),
                    linear-gradient(135deg, var(--color-text-muted) 50%, transparent 50%);
  background-position: calc(100% - 14px) 50%, calc(100% - 9px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
textarea.control {
  height: auto;
  min-height: 80px;
  padding: var(--space-sm) var(--space-md);
  line-height: 1.5;
  resize: vertical;
}
.control--mini { width: 60px; height: 32px; padding: 0 var(--space-sm); }
.control--block { width: 100%; }

/* ============ §4.4 .btn ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: var(--control-height);
  padding: 0 var(--space-lg);
  border-radius: var(--radius-md);
  font-size: var(--fs-md);
  font-weight: var(--fw-medium);
  border: 0;
  cursor: pointer;
  transition: background 120ms ease, box-shadow 120ms ease, filter 120ms ease;
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}
.btn:focus-visible { box-shadow: var(--focus-ring); outline: none; }
.btn:disabled, .btn[disabled] { opacity: 0.5; cursor: not-allowed; }

.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover:not(:disabled) { background: var(--color-primary-dark); text-decoration: none; }

.btn--success { background: var(--color-success); color: #fff; }
.btn--success:hover:not(:disabled) { filter: brightness(0.94); text-decoration: none; }

.btn--default {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
}
.btn--default:hover:not(:disabled) { background: var(--color-neutral-soft); text-decoration: none; }

.btn--danger { background: var(--color-danger); color: #fff; }
.btn--danger:hover:not(:disabled) { filter: brightness(0.94); text-decoration: none; }

.btn--link { background: transparent; color: var(--color-primary); padding: 0 var(--space-sm); height: auto; }
.btn--link:hover:not(:disabled) { text-decoration: underline; }

.btn--sm { height: 28px; padding: 0 10px; font-size: var(--fs-sm); }
.btn--lg { height: 44px; padding: 0 20px; }
.btn--block { width: 100%; }

/* ============ §4.5 .data-table ============ */
.data-table-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}
.data-table thead th {
  background: var(--color-table-head-bg);
  color: var(--color-table-head-fg);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-md);
  text-align: left;
  padding: 0 var(--space-md);
  height: 48px;
  white-space: nowrap;
}
.data-table tbody td {
  border-top: 1px solid var(--color-border);
  padding: 0 var(--space-md);
  height: var(--row-height-md);
  font-size: var(--fs-md);
  color: var(--color-text);
  vertical-align: middle;
}
.data-table tbody tr:hover td { background: var(--color-row-hover); }
.data-table--compact tbody td { height: var(--row-height-sm); }
.data-table--zebra tbody tr:nth-child(even) td { background: var(--color-row-zebra); }
.data-table--zebra tbody tr:nth-child(even):hover td { background: var(--color-row-hover); }

.data-table__cell-truncate {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.data-table__th--actions { white-space: nowrap; }
.data-table__cell--actions { white-space: nowrap; }
.data-table td .btn + .btn { margin-left: 6px; }

/* 可排序列表头 */
.data-table__th--sortable {
  cursor: pointer;
  user-select: none;
}
.data-table__th--sortable .icon {
  margin-left: 4px;
  opacity: 0.6;
  transition: opacity 120ms ease, transform 120ms ease;
}
.data-table__th--sortable:hover .icon { opacity: 1; }
.data-table__th--sortable[data-order="asc"]  .icon { transform: rotate(180deg); }
.data-table__th--sortable[data-order="desc"] .icon { transform: rotate(0deg); }

/* ============ §4.6 .pill ============ */
.pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  line-height: 20px;
}
.pill--success { background: var(--color-success-soft); color: var(--color-success); }
.pill--warning { background: var(--color-warning-soft); color: var(--color-warning); }
.pill--danger  { background: var(--color-danger-soft);  color: var(--color-danger);  }
.pill--info    { background: var(--color-info-soft);    color: var(--color-info);    }
.pill--neutral { background: var(--color-neutral-soft); color: var(--color-neutral); }
.pill--primary { background: var(--color-primary-soft); color: var(--color-primary); }

/* ============ §4.7 .tag-mono ============ */
.tag-mono {
  font-family: ui-monospace, SFMono-Regular, "Consolas", "Liberation Mono", monospace;
  font-size: var(--fs-sm);
  color: var(--color-text);
  background: var(--color-neutral-soft);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

/* ============ §4.8 .pager ============ */
.pager {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}
.pager__btn, .pager__page {
  height: 32px;
  min-width: 32px;
  padding: 0 10px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--fs-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.pager__btn:hover:not(:disabled),
.pager__page:hover:not(.pager__page--active) {
  background: var(--color-row-hover);
}
.pager__page--active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.pager__btn:disabled { opacity: 0.5; cursor: not-allowed; }
.pager__ellipsis {
  padding: 0 6px;
  color: var(--color-text-muted);
}
.pager__info {
  margin-left: auto;
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}
.pager__jump {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ============ §4.9 .empty / .loading ============ */
.empty, .loading {
  text-align: center;
  color: var(--color-text-muted);
  padding: var(--space-xl) 0;
  font-size: var(--fs-md);
}
.empty .icon--xl {
  width: 48px;
  height: 48px;
  color: var(--color-text-dim);
  margin-bottom: var(--space-sm);
}
.loading::before {
  content: "";
  display: inline-block;
  width: 12px; height: 12px;
  border: 2px solid var(--color-border-strong);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  margin-right: var(--space-sm);
  animation: spin 0.8s linear infinite;
  vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ §4.10 .alert ============ */
.alert {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: var(--fs-md);
  line-height: 1.5;
  border: 1px solid transparent;
}
.alert--success { background: var(--color-success-soft); color: var(--color-success); border-color: rgba(22, 163, 74, 0.20); }
.alert--warning { background: var(--color-warning-soft); color: var(--color-warning); border-color: rgba(217, 119, 6, 0.20);  }
.alert--danger  { background: var(--color-danger-soft);  color: var(--color-danger);  border-color: rgba(220, 38, 38, 0.20);  }
.alert--info    { background: var(--color-info-soft);    color: var(--color-info);    border-color: rgba(14, 165, 233, 0.20); }

/* ============ §4.11 .form ============ */
.form { }
.form-row {
  display: flex;
  align-items: flex-start;
  padding: var(--space-md) 0;
  gap: var(--space-lg);
}
.form-row + .form-row { border-top: 1px solid var(--color-border); }
.form-row__label {
  width: 120px;
  flex-shrink: 0;
  color: var(--color-text-muted);
  font-size: var(--fs-md);
  text-align: right;
  padding-top: 8px;
}
.form-row__label .required { color: var(--color-danger); margin-left: 2px; }
.form-row__control {
  flex: 1;
  min-width: 0;
}
.form-row__control > .control { max-width: 480px; }
.form-row__control textarea.control { max-width: 600px; }
.form-row__hint {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin: 6px 0 0;
  line-height: 1.6;
}
.form-row__err {
  font-size: var(--fs-sm);
  color: var(--color-danger);
  margin: 6px 0 0;
}
.form-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  margin-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}
.form-actions__msg {
  flex: 1;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}
.form-actions__msg--ok  { color: var(--color-success); }
.form-actions__msg--err { color: var(--color-danger); }

/* control 校验失败态（与 :focus 区分） */
.control--invalid { border-color: var(--color-danger); }
.control--invalid:focus { box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.20); }

/* 单选/复选组（横向排列，外观贴近 .field） */
.radio-group, .checkbox-group {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  align-items: center;
}
.radio, .checkbox {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-md);
  line-height: 1;
  color: var(--color-text);
  cursor: pointer;
}
/* 自绘单选/复选：避开 Windows Chrome/Edge 原生 radio 圆点在小尺寸下偏上 1-2px 的渲染缺陷 */
.radio input[type="radio"],
.checkbox input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  transition: border-color 120ms ease, background-color 120ms ease;
}
.radio input[type="radio"] { border-radius: 50%; }
.checkbox input[type="checkbox"] { border-radius: 3px; }
.radio input[type="radio"]:hover,
.checkbox input[type="checkbox"]:hover { border-color: var(--color-primary); }
.radio input[type="radio"]:checked { border-color: var(--color-primary); }
.radio input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--color-primary);
}
.checkbox input[type="checkbox"]:checked {
  border-color: var(--color-primary);
  background: var(--color-primary);
}
.checkbox input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 3px;
  top: 0;
  width: 4px;
  height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.radio input[type="radio"]:focus-visible,
.checkbox input[type="checkbox"]:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}
.radio input[type="radio"]:disabled,
.checkbox input[type="checkbox"]:disabled {
  background: var(--color-neutral-soft, #f3f4f6);
  cursor: not-allowed;
  opacity: 0.6;
}

/* 文件上传触发器（包住 <input type="file" hidden>） */
.file-trigger { cursor: pointer; }
.file-trigger input[type="file"] { display: none; }

/* 媒体上传后预览列表 */
.media-list { margin-top: var(--space-sm); display: flex; flex-direction: column; gap: 6px; }
.media-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 4px 8px;
  background: var(--color-neutral-soft);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  max-width: 600px;
}
.media-item__name {
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.media-thumb {
  max-width: 96px;
  max-height: 64px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}
.media-thumb--placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 40px;
  background: var(--color-surface);
  color: var(--color-text-muted);
}

/* 日期 + 清除按钮一行 */
.schedule-row {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* 追评条目卡片 */
.comment-list { display: flex; flex-direction: column; gap: var(--space-sm); margin-bottom: var(--space-sm); }
.comment-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  background: var(--color-neutral-soft);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 600px;
}
.comment-item__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.comment-item__offset {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

/* ============ .section-title（卡片内小节标题） ============ */
.section-title {
  margin: 0 0 var(--space-md);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}
.section-title + .desc-list,
.section-title + .data-table-wrap { margin-top: 0; }

/* ============ .desc-list（详情页 label/value 列表）============ */
.desc-list {
  margin: 0;
  display: flex;
  flex-direction: column;
}
.desc-row {
  display: flex;
  align-items: flex-start;
  padding: var(--space-sm) 0;
  gap: var(--space-lg);
  border-top: 1px solid var(--color-border);
}
.desc-row:first-child { border-top: 0; padding-top: 0; }
.desc-row__label {
  width: 120px;
  flex-shrink: 0;
  color: var(--color-text-muted);
  font-size: var(--fs-md);
  text-align: right;
  margin: 0;
}
.desc-row__value {
  flex: 1;
  min-width: 0;
  margin: 0;
  color: var(--color-text);
  font-size: var(--fs-md);
  word-break: break-word;
}
.desc-row__pre {
  margin: 0;
  white-space: pre-wrap;
  font-family: inherit;
  font-size: var(--fs-md);
  color: var(--color-text);
  line-height: 1.6;
}

/* 详情页媒体预览 */
.media-preview-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.media-preview-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.media-preview {
  max-width: 240px;
  max-height: 240px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}
.media-preview--video { max-width: 360px; max-height: 240px; }

/* ============ §4.12 .icon ============ */
.icon {
  display: inline-block;
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  flex-shrink: 0;
  vertical-align: -2px;
}
.icon--sm { width: 12px; height: 12px; }
.icon--md { width: 14px; height: 14px; }
.icon--lg { width: 18px; height: 18px; }
.icon--xl { width: 24px; height: 24px; }

/* ============ .modal（弹层组件）============ */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
}
.modal.modal--open { display: block; }
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
}
.modal__panel {
  position: relative;
  margin: 80px auto 0;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 560px;
  max-width: calc(100vw - 48px);
  max-height: calc(100vh - 120px);
  display: flex;
  flex-direction: column;
}
.modal--lg .modal__panel { width: 720px; }
.modal--xl .modal__panel { width: 880px; }
.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}
.modal__title {
  margin: 0;
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
}
.modal__close {
  background: transparent;
  border: 0;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
}
.modal__close:hover { background: var(--color-neutral-soft); color: var(--color-text); }
.modal__body {
  padding: var(--space-lg) var(--space-xl);
  overflow-y: auto;
  flex: 1;
}
.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-top: 1px solid var(--color-border);
}
.modal__footer .modal__msg {
  flex: 1;
  text-align: left;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  align-self: center;
}
.modal__footer .modal__msg--err { color: var(--color-danger); }
.modal__footer .modal__msg--ok  { color: var(--color-success); }

/* 模态框里 form-row label 列窄一些（弹层 width 受限） */
.modal__body .form-row__label { width: 96px; }

/* ============ .menu-tree-checkbox（角色 → 菜单授权弹层用）============ */
.menu-tree-checkbox {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  max-height: 420px;
  overflow-y: auto;
  padding: var(--space-sm) 0;
}
.menu-tree-checkbox .mtc-node {
  display: flex;
  align-items: center;
  padding: 4px var(--space-md);
  gap: var(--space-sm);
  user-select: none;
}
.menu-tree-checkbox .mtc-node:hover { background: var(--color-row-hover); }
.menu-tree-checkbox .mtc-node input[type="checkbox"] { cursor: pointer; margin: 0; }
.menu-tree-checkbox .mtc-name { flex: 1; }
.menu-tree-checkbox .mtc-type {
  font-size: var(--fs-xs);
  padding: 1px 6px;
  border-radius: var(--radius-pill);
  background: var(--color-neutral-soft);
  color: var(--color-text-muted);
}
.menu-tree-checkbox .mtc-type--btn { background: var(--color-info-soft); color: var(--color-info); }
.menu-tree-checkbox .mtc-type--menu { background: var(--color-primary-soft); color: var(--color-primary); }
.menu-tree-checkbox .mtc-type--cat { background: var(--color-warning-soft); color: var(--color-warning); }

/* ============ 法务页（/privacy /terms /data-deletion 走 _LegalLayout）============ */
.legal-shell {
  min-height: 100vh;
  background: var(--color-bg);
  padding-bottom: var(--space-2xl);
}
.legal-header {
  height: 56px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-xl);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
}
.legal-header a {
  color: var(--color-text);
  text-decoration: none;
}
.legal-card {
  max-width: 760px;
  margin: var(--space-2xl) auto 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
}
.legal-card h1 {
  margin: 0 0 var(--space-md);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-semibold);
}
.legal-card h2 {
  margin: var(--space-xl) 0 var(--space-md);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
}
.legal-card p,
.legal-card li {
  font-size: var(--fs-md);
  line-height: 1.7;
  color: var(--color-text);
}
.legal-card ul,
.legal-card ol {
  padding-left: var(--space-xl);
}
.legal-card a {
  color: var(--color-primary);
}
.legal-card code {
  background: var(--color-neutral-soft);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: ui-monospace, SFMono-Regular, "Consolas", "Liberation Mono", monospace;
  font-size: var(--fs-sm);
  color: var(--color-text);
}
.legal-card .last-update {
  margin-top: var(--space-xl);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
}
.legal-card .draft-warning {
  background: var(--color-warning-soft);
  color: var(--color-warning);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
}

/* 法务页双语切换 tab */
.lang-switch {
  display: flex;
  gap: 8px;
  margin: 0 0 var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}
.lang-switch__btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 6px 16px;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}
.lang-switch__btn:hover { color: var(--color-text); border-color: var(--color-border-strong); }
.lang-switch__btn--active,
.lang-switch__btn--active:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.lang-block[hidden] { display: none; }
.legal-card table.legal-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: var(--fs-md);
}
.legal-card table.legal-table th,
.legal-card table.legal-table td {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border);
}
.legal-card table.legal-table thead th { border-bottom: 2px solid var(--color-border-strong); }

/* ============ FbBinding/Index 专用：用户卡片 + 空态卡片 ============ */
.binding-empty {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
}
.binding-empty__icon {
  color: var(--color-text-dim);
  margin-bottom: var(--space-md);
}
.binding-empty__icon .icon--xl { width: 48px; height: 48px; }
.binding-empty__title {
  margin: 0 0 var(--space-xs);
  font-size: var(--fs-lg);
  font-weight: var(--fw-medium);
  color: var(--color-text);
}
.binding-empty__sub { margin: 0 0 var(--space-xl); }
.binding-empty__action { margin: 0 0 var(--space-lg); }
.binding-empty__legal { margin: 0 0 var(--space-md); font-size: var(--fs-sm); }
.binding-empty__legal a { color: var(--color-primary); text-decoration: underline; }
.binding-empty__meta { margin: 0; }

.binding-profile {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  flex-wrap: wrap;
}
.binding-profile__main {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  min-width: 0;
}
.binding-profile__avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}
.binding-profile__avatar--placeholder { background: var(--color-neutral-soft); }
.binding-profile__info { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.binding-profile__name {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}
.binding-profile__meta {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: var(--fs-sm);
}
.binding-profile__user-id { font-size: var(--fs-sm); }
.binding-profile__actions {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}

/* ============ FB 多账号切换器（详见 Doc/md/Facebook 多账号设计.md §5.3） ============ */
.fb-account-switcher {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  overflow-x: auto;
  white-space: nowrap;
}
.fb-account-switcher__chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  cursor: pointer;
  text-align: left;
  transition: border-color .15s, background-color .15s;
}
.fb-account-switcher__chip:hover {
  border-color: var(--color-primary);
}
.fb-account-switcher__chip--active {
  border-color: var(--color-primary);
  background: var(--color-primary-soft, rgba(0, 110, 200, 0.08));
}
.fb-account-switcher__chip--revoked {
  opacity: .55;
}
.fb-account-switcher__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-neutral-soft);
  object-fit: cover;
  flex-shrink: 0;
}
.fb-account-switcher__name {
  font-weight: 600;
  font-size: var(--fs-sm);
}
.fb-account-switcher__count {
  font-size: var(--fs-xs, 12px);
  color: var(--color-muted);
}
.fb-account-switcher__add {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: var(--space-sm) var(--space-md);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--fs-sm);
}
.fb-account-switcher__add:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-soft, rgba(0, 110, 200, 0.06));
}

/* ============ 登录页（独立 layout 用） ============ */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  padding: var(--space-xl);
}
.auth-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px 36px;
  width: 360px;
}
.auth-card__title {
  margin: 0 0 4px;
  font-size: var(--fs-2xl);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}
.auth-card__sub {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  margin: 0 0 var(--space-xl);
}
.auth-card .form-row {
  display: block;
  padding: 0 0 var(--space-md);
  border-top: 0;
}
.auth-card .form-row__label {
  width: auto;
  text-align: left;
  padding: 0 0 6px;
  display: block;
  color: var(--color-text);
}
.auth-card .form-row__control > .control { max-width: none; width: 100%; }

/* ============ .tree-select（树形单选下拉，M4 用户管理首次引入；详见 UI 设计规范.md §4.13）============ */
.tree-select { position: relative; display: inline-block; width: 100%; }
.tree-select__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 32px;
  padding: 4px 32px 4px 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-md);
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
  position: relative;
}
.tree-select__trigger:hover { border-color: var(--color-primary); }
.tree-select__trigger--placeholder { color: var(--color-text-dim); }
.tree-select__trigger::after {
  content: '';
  position: absolute;
  right: 12px;
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid var(--color-text-dim);
}
.tree-select__clear {
  position: absolute;
  right: 28px;
  width: 16px; height: 16px;
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dim);
  cursor: pointer;
  background: transparent;
  border: none;
  font-size: 14px;
  line-height: 1;
}
.tree-select:hover .tree-select__clear,
.tree-select--has-value .tree-select__clear { display: inline-flex; }
.tree-select__clear:hover { color: var(--color-danger); }
.tree-select__panel {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 100%;
  max-width: 360px;
  max-height: 280px;
  overflow-y: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  z-index: 2000;
  padding: 6px 0;
  display: none;
}
.tree-select.tree-select--open .tree-select__panel { display: block; }
.tree-select__search {
  margin: 0 8px 6px;
  padding: 4px 8px;
  width: calc(100% - 16px);
  height: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
}
.tree-select__node {
  display: flex;
  align-items: center;
  padding: 4px 10px;
  cursor: pointer;
  font-size: var(--fs-md);
  white-space: nowrap;
}
.tree-select__node:hover { background: var(--color-row-hover); }
.tree-select__node--selected { background: var(--color-primary-soft); color: var(--color-primary); font-weight: var(--fw-medium); }
.tree-select__node--hidden { display: none; }
.tree-select__node--disabled { color: var(--color-text-dim); cursor: not-allowed; }
.tree-select__empty {
  padding: var(--space-md);
  text-align: center;
  color: var(--color-text-dim);
  font-size: var(--fs-sm);
}

/* ============ .multi-chip（多选 chip 控件，M4 用户管理首次引入；详见 UI 设计规范.md §4.14）============ */
.multi-chip { position: relative; display: inline-block; width: 100%; }
.multi-chip__trigger {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  min-height: 32px;
  padding: 3px 32px 3px 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  position: relative;
}
.multi-chip__trigger:hover { border-color: var(--color-primary); }
.multi-chip__trigger::after {
  content: '';
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid var(--color-text-dim);
}
.multi-chip__placeholder {
  color: var(--color-text-dim);
  padding: 4px 6px;
  font-size: var(--fs-md);
}
.multi-chip__chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 4px 2px 8px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  line-height: 1.4;
}
.multi-chip__chip-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: transparent;
  color: var(--color-primary);
  border: none;
  cursor: pointer;
  font-size: 12px;
  line-height: 1;
}
.multi-chip__chip-close:hover { background: var(--color-primary); color: var(--color-on-primary, #fff); }
.multi-chip__panel {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 100%;
  max-width: 360px;
  max-height: 240px;
  overflow-y: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  z-index: 2000;
  padding: 4px 0;
  display: none;
}
.multi-chip.multi-chip--open .multi-chip__panel { display: block; }
.multi-chip__option {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  cursor: pointer;
  font-size: var(--fs-md);
}
.multi-chip__option:hover { background: var(--color-row-hover); }
.multi-chip__option input[type="checkbox"] { margin: 0; cursor: pointer; }
.multi-chip__option--checked { background: var(--color-primary-soft); color: var(--color-primary); }

/* ============ Lightbox（媒体预览：图片放大 / 视频播放） ============ */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, .82);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  cursor: zoom-out;
}
.lightbox--open { display: flex; }
.lightbox__content {
  max-width: 92vw;
  max-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
}
.lightbox__content img,
.lightbox__content video {
  max-width: 92vw;
  max-height: 92vh;
  border-radius: var(--radius-md);
  box-shadow: 0 12px 48px rgba(0, 0, 0, .55);
  background: #000;
  display: block;
}
.lightbox__close {
  position: absolute;
  top: 20px; right: 24px;
  width: 40px; height: 40px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, .15);
  color: #fff;
  font-size: 22px; line-height: 1;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .15s;
}
.lightbox__close:hover { background: rgba(255, 255, 255, .3); }

/* 媒体缩略图统一可点击提示 */
.media-thumb { cursor: zoom-in; transition: transform .15s; }
.media-thumb:hover { transform: scale(1.03); }
.media-thumb--placeholder { cursor: pointer; }

/* ============ DateTimePicker（自定义日期 + 时间选择器） ============ */
.dt-picker { position: relative; display: inline-block; }
.dt-picker__trigger {
  display: inline-flex; align-items: center; gap: var(--space-sm);
  padding: 6px 12px;
  min-width: 240px;
  height: 36px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font: inherit;
  color: var(--color-text);
  transition: border-color .15s, box-shadow .15s;
}
.dt-picker__trigger:hover { border-color: var(--color-primary); }
.dt-picker--open .dt-picker__trigger {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 110, 200, .12);
}
.dt-picker__trigger--placeholder { color: var(--color-muted); }
.dt-picker__trigger-text { flex: 1; text-align: left; font-size: var(--fs-md); }
.dt-picker__clear {
  margin-left: auto; opacity: .55; cursor: pointer; border: 0;
  background: transparent; font-size: 16px; padding: 0 4px; line-height: 1;
  color: var(--color-text);
}
.dt-picker__clear:hover { opacity: 1; }

.dt-picker__panel {
  display: none;
  position: absolute;
  top: calc(100% + 6px); left: 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 32px rgba(0, 0, 0, .12);
  width: 300px;
  z-index: 200;
  user-select: none;
}
.dt-picker--open .dt-picker__panel { display: block; }

.dt-picker__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
}
.dt-picker__nav {
  background: transparent; border: 0; cursor: pointer;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 18px; line-height: 1;
}
.dt-picker__nav:hover:not(:disabled) { background: var(--color-row-hover); }
.dt-picker__nav:disabled { opacity: .3; cursor: not-allowed; }
.dt-picker__title { font-weight: 600; font-size: var(--fs-md); }

.dt-picker__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  padding: 8px;
}
.dt-picker__weekday {
  text-align: center;
  font-size: var(--fs-sm);
  color: var(--color-muted);
  padding: 4px 0;
  font-weight: 500;
}
.dt-picker__day {
  height: 34px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--fs-sm);
  color: var(--color-text);
  transition: background .12s;
}
.dt-picker__day:hover { background: var(--color-primary-soft); }
.dt-picker__day--other { color: var(--color-muted); opacity: .4; }
.dt-picker__day--today {
  font-weight: 700;
  color: var(--color-primary);
}
.dt-picker__day--selected,
.dt-picker__day--selected:hover {
  background: var(--color-primary);
  color: #fff;
}
.dt-picker__day--disabled {
  color: var(--color-muted) !important;
  opacity: .25;
  cursor: not-allowed;
  background: transparent !important;
}

.dt-picker__time {
  display: flex; align-items: center; gap: 8px;
  padding: 8px var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: var(--fs-sm);
}
.dt-picker__time-input {
  width: 56px;
  padding: 4px 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-align: center;
  font: inherit;
  background: var(--color-bg);
}
.dt-picker__time-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 2px rgba(0,110,200,.12); }

.dt-picker__foot {
  display: flex; justify-content: flex-end; gap: var(--space-sm);
  padding: 8px var(--space-md);
  border-top: 1px solid var(--color-border);
}