/* Statistics, charts and administrative AI usage. Colour values live in design-system.css. */
.statistics-category { grid-column: 1 / -1; margin: 0; padding: 0; border: 0; }
.statistics-category legend { margin-bottom: var(--space-2); font-size: 14px; font-weight: 700; }
.statistics-category > div { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.statistics-category input,
.search--overview .statistics-category input { position: absolute; width: 1px; height: 1px; inline-size: 1px; block-size: 1px; min-height: 0; padding: 0; border: 0; clip-path: inset(50%); opacity: 0; }
.statistics-category label { display: inline-flex; align-items: center; min-height: 40px; padding: 8px 12px; border: 1px solid var(--line); border-radius: var(--radius-pill); color: var(--ink); background: var(--surface); cursor: pointer; }
.statistics-category input:checked + label { border-color: var(--statistics-selected-border); color: var(--statistics-selected-text); background: var(--statistics-selected-bg); }
.statistics-category label::before { content: "✓"; display: inline-grid; place-items: center; width: 16px; height: 16px; margin-right: 6px; border-radius: 50%; color: var(--surface); background: var(--statistics-selected-text); font-size: 11px; font-weight: 700; flex: 0 0 16px; visibility: hidden; }
.statistics-category input:checked + label::before { visibility: visible; }
.statistics-category input:focus-visible + label { outline: 3px solid var(--focus); outline-offset: 2px; }
.statistics-category input:disabled + label { opacity: .65; cursor: wait; }
.search-retry { min-height: 32px; margin-left: 6px; padding: 3px 8px; border-color: var(--danger-text); color: var(--danger-text); background: transparent; font-size: 13px; }
.search-retry:hover { border-color: var(--danger-text); background: var(--danger-bg); }

.shell--statistics { max-width: 1460px; }
.statistics-head { position: relative; overflow: hidden; padding: 4px 112px 8px 0; }
.statistics-head > img { position: absolute; right: 10px; bottom: -6px; width: 106px; height: 106px; object-fit: contain; filter: drop-shadow(0 8px 10px var(--viewer-shadow)); }
.statistics-controls { display: grid; grid-template-columns: 150px minmax(285px, 1fr) minmax(260px, 1fr) minmax(230px, 340px); align-items: end; gap: 14px; margin: 0 0 22px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
.statistics-controls select { width: 100%; padding: 12px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); color: var(--ink); background: var(--surface); font: inherit; }
.statistics-range { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 0; padding: 0; border: 0; }
.statistics-range legend { grid-column: 1 / -1; padding: 0; font-size: 14px; font-weight: 700; }
.statistics-range input,
.statistics-person input { width: 100%; }
.metric-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 22px; }
.metric-grid article { display: grid; gap: 3px; min-height: 112px; padding: var(--space-5); border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
.metric-grid strong { color: var(--brand-blue); font-size: 32px; line-height: 1; }
.metric-grid span,
.card-note { color: var(--muted); line-height: 1.4; }

.statistics-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(380px, 1fr) minmax(380px, 1fr); gap: 18px; align-items: start; }
.statistics-card { min-height: 430px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
.statistics-card h2 { margin: 0 0 var(--space-2); font-size: 22px; }
.statistics-card .eyebrow { margin-bottom: 5px; }
.activity-chart { height: 245px; margin-top: 18px; padding: 18px 0 0; overflow-x: auto; border-bottom: 1px solid var(--line); border-left: 1px solid var(--line); }
.activity-bars { display: flex; align-items: stretch; gap: 4px; min-width: max-content; height: 100%; }
.activity-bar-wrap { display: grid; grid-template-rows: 20px 1fr 30px; flex: 1 0 22px; width: 22px; height: 100%; padding: 0; border: 0; border-radius: 0; color: inherit; background: transparent; text-align: center; }
.activity-bar-wrap:hover,
.activity-bar-wrap:focus-visible { outline: 0; background: var(--statistics-selected-bg); }
.activity-bar-wrap > span:first-child,
.weekday-bar strong { align-self: end; color: var(--statistics-annotation); font-size: 11px; }
.activity-bar-stage { position: relative; display: block; min-height: 0; margin: 0 1px; }
.activity-bar-fill { fill: var(--brand-primary); }
.activity-bar-wrap:hover .activity-bar-fill,
.activity-bar-wrap:focus-visible .activity-bar-fill { fill: var(--brand-deep-blue); }
.weekday-bar-fill { fill: var(--brand-violet); }
.activity-bar-wrap small { overflow: hidden; color: var(--muted); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; transform: rotate(-45deg); transform-origin: right top; }
.weekday-section { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.weekday-section h3 { margin: 0; font-size: 16px; }
.weekday-section p { margin: 4px 0 12px; color: var(--muted); font-size: 12px; }
.weekday-bars { display: grid; grid-template-columns: repeat(7, 1fr); align-items: end; gap: 7px; height: 122px; }
.weekday-bar { display: grid; grid-template-rows: 18px 1fr 18px; min-width: 0; height: 100%; text-align: center; }
.weekday-bar svg { display: block; min-height: 0; width: 100%; height: 100%; margin: 0 2px; }
.weekday-bar span { color: var(--muted); font-size: 11px; }

.ranking-row { display: block; width: 100%; margin-top: 18px; padding: 0; border: 0; color: inherit; background: transparent; text-align: left; }
.ranking-row--button { cursor: pointer; }
.ranking-row--button:hover .ranking-title strong,
.ranking-row--button:focus-visible .ranking-title strong,
.ranking-title a:hover { text-decoration: underline; }
.ranking-row--button:focus-visible { outline: 2px solid var(--focus); outline-offset: 5px; border-radius: var(--radius-sm); }
.ranking-title { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 6px; }
.ranking-title strong,
.ranking-title a { overflow: hidden; color: var(--ink); font-size: 14px; text-decoration: none; text-overflow: ellipsis; white-space: nowrap; }
.ranking-title span { flex: none; color: var(--brand-blue); font-size: 13px; font-weight: 800; }
.ranking-track { display: block; width: 100%; height: 11px; overflow: visible; background: var(--statistics-track); }
.ranking-track .rank-message { fill: var(--brand-primary); }
.ranking-track .rank-reply { fill: var(--brand-violet); }
.ranking-track .rank-reaction { fill: var(--brand-orange); }
.ranking-track--chat .rank-message { fill: var(--brand-violet); }
.ranking-track--chat .rank-reply { fill: var(--brand-deep-blue); }
.ranking-track--chat .rank-reaction { fill: var(--brand-orange); }
.ranking-row small { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }
.statistics-card .empty { margin-top: 18px; padding: 22px; }

.statistics-detail { display: block; max-height: 0; margin-top: 0; padding: 0; overflow: hidden; visibility: hidden; border: 0 solid var(--statistics-selected-border); border-radius: var(--radius-lg); background: var(--surface); box-shadow: none; opacity: 0; transform: translateY(12px); transition: opacity .28s ease, transform .28s ease; }
.statistics-detail--open { max-height: 2800px; margin-top: var(--space-5); border-width: 2px; visibility: visible; box-shadow: var(--statistics-detail-shadow); opacity: 1; transform: translateY(0); }
.statistics-detail-heading { display: flex; justify-content: space-between; gap: var(--space-5); padding: var(--space-5) 22px; border-bottom: 1px solid var(--line); }
.statistics-detail-heading h2 { margin: 0 0 6px; }
.statistics-detail-heading p { margin: 0; color: var(--muted); }
.statistics-detail-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; padding: var(--space-4); }
.statistics-detail-item { display: flex; gap: var(--space-3); padding: 14px; border: 1px solid var(--line); border-radius: var(--radius-md); color: var(--ink); text-decoration: none; transition: transform .18s ease, box-shadow .18s ease; }
.statistics-detail-item:hover { box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.statistics-detail-item > div { min-width: 0; }
.statistics-detail-item strong,
.statistics-detail-item small { display: block; }
.statistics-detail-item small { margin-top: 3px; color: var(--muted); }
.statistics-detail-item p { margin: 7px 0 0; line-height: 1.45; }
.statistics-detail--open .statistics-detail-heading,
.statistics-detail--open .statistics-detail-list { animation: detail-content-in 280ms ease both; }

.ai-usage-summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-4); margin-bottom: var(--space-6); }
.ai-usage-summary article { display: grid; gap: var(--space-2); padding: var(--space-5); border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
.ai-usage-summary span,
.ai-usage-summary small { color: var(--text-muted); }
.ai-usage-summary strong { color: var(--brand-blue); font-size: 28px; }
.ai-usage-history { min-height: 0; }
.ai-usage-table-wrap { margin-top: var(--space-5); overflow-x: auto; }
.ai-usage-table-wrap table { width: 100%; border-collapse: collapse; }
.ai-usage-table-wrap th,
.ai-usage-table-wrap td { padding: var(--space-3) var(--space-2); border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
.ai-usage-table-wrap th { color: var(--text-muted); font-size: 12px; text-transform: none; }

@keyframes detail-content-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@media (max-width: 900px) {
  .statistics-controls,
  .statistics-grid { grid-template-columns: 1fr; }
  .statistics-card,
  .ranking-row { min-width: 0; max-width: 100%; }
  .metric-grid,
  .ai-usage-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .statistics-detail-list { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .statistics-head { padding-right: 0; }
  .statistics-head > img { display: none; }
  .metric-grid,
  .ai-usage-summary { grid-template-columns: 1fr; }
  .statistics-range { grid-template-columns: 1fr; }
}