.activity-analytics{background:var(--surface);color:var(--ink)}.activity-scope{display:flex;gap:6px;flex-wrap:wrap}.activity-scope .is-active{border-color:var(--blue);background:var(--blue-soft);color:var(--ink)}.activity-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.activity-kpi{border:1px solid var(--line);border-radius:12px;padding:14px;background:var(--surface-soft);display:grid;gap:5px}.activity-kpi span,.activity-list-row span,.activity-history-row span,.activity-user-panel summary span{color:var(--muted);font-size:12px}.activity-kpi strong{font-size:26px}.activity-side-lists,.activity-breakdown-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:16px}.activity-breakdown-grid>section:first-child{grid-column:1/-1}.activity-side-lists>section,.activity-breakdown-grid>section{border:1px solid var(--line);border-radius:12px;padding:14px;background:var(--surface)}.activity-side-lists h3,.activity-breakdown-grid h3{margin:0 0 10px;font-size:14px}.activity-list-row,.activity-history-row{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-top:1px solid var(--line)}.activity-list-row{display:grid;gap:2px}.activity-bar-row{display:grid;gap:5px;margin:9px 0}.activity-bar-row>div:first-child{display:flex;justify-content:space-between;gap:12px;align-items:baseline}.activity-bar-row span{color:var(--muted);font-size:11px}.activity-bar-track{height:8px;border-radius:999px;background:var(--surface-soft);overflow:hidden}.activity-bar-track>span{display:block;height:100%;background:var(--blue);border-radius:inherit}.activity-trend{min-height:140px;display:flex;align-items:end;gap:4px;overflow-x:auto;padding:8px 2px 0}.activity-trend-day{min-width:18px;height:120px;display:grid;grid-template-rows:1fr auto;align-items:end;gap:4px;text-align:center}.activity-trend-day>span{width:100%;min-height:3px;border-radius:4px 4px 0 0;background:var(--blue)}.activity-trend-day small{color:var(--muted);font-size:9px;writing-mode:vertical-rl}.activity-user-panel{margin-top:16px;border-top:1px solid var(--line);padding-top:14px}.activity-user-panel summary{cursor:pointer;display:flex;justify-content:space-between;gap:12px}.activity-user-shell{display:grid;gap:12px;margin-top:14px}.activity-user-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;max-height:280px;overflow:auto}.activity-user-results .student-row{width:100%;text-align:left}.activity-user-results small{display:block;color:var(--muted);margin-top:2px}.activity-user-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-bottom:12px}.activity-user-summary>div{border:1px solid var(--line);background:var(--surface-soft);border-radius:10px;padding:10px;display:grid;gap:4px}.activity-user-summary span,.activity-history-row time{color:var(--muted);font-size:11px}.activity-privacy-note{margin:14px 0 0;font-size:11px}@media(max-width:820px){.activity-kpis,.activity-user-summary{grid-template-columns:repeat(2,minmax(0,1fr))}.activity-side-lists,.activity-breakdown-grid,.activity-user-results{grid-template-columns:1fr}.activity-breakdown-grid>section:first-child{grid-column:auto}.activity-history-row{flex-direction:column}}