/* Read-only teacher activity views. The existing cream / paper / green palette is shared. */
.teacher-analytics{min-width:0;max-width:100%;color:var(--ink,#2e3d31);--activity-line:var(--line,#dde2d7);--activity-muted:var(--muted,#6e786c);--activity-paper:var(--paper,#fffefb);--activity-green:var(--green,#45674e);--activity-soft:var(--soft,#e9efe4)}
.teacher-analytics [hidden]{display:none!important}
.teacher-analytics button,.teacher-analytics select,.teacher-analytics a{touch-action:manipulation}
.teacher-analytics button,.teacher-analytics select{min-height:44px}
.teacher-analytics a:focus-visible,.teacher-analytics button:focus-visible,.teacher-analytics select:focus-visible,.teacher-analytics summary:focus-visible,.activity-table-wrap:focus-visible{outline:2px solid var(--activity-green);outline-offset:3px}
.activity-tabs{display:flex;flex-wrap:wrap;gap:6px;border-bottom:1px solid var(--activity-line);margin:0 0 24px;padding-bottom:8px}
.activity-tabs a{display:flex;align-items:center;min-height:44px;padding:9px 18px;text-decoration:none;border:1px solid transparent;border-radius:8px;color:var(--activity-muted);font-size:14px}
.activity-tabs a[aria-current=page]{color:var(--activity-green);background:var(--activity-soft);border-color:var(--activity-line);font-weight:600}
.activity-heading,.activity-section-heading{display:flex;justify-content:space-between;align-items:start;gap:16px;flex-wrap:wrap}
.activity-heading{margin:0 0 20px}.activity-heading h1{font-size:28px;margin:0 0 7px}.activity-heading p{margin:0;color:var(--activity-muted);font-size:14px}.activity-heading button{min-width:72px}
.activity-controls{display:flex;align-items:end;flex-wrap:wrap;gap:16px;margin:16px 0}.activity-controls label{display:flex;flex-direction:column;gap:7px;font-size:13px;max-width:100%;min-width:0}.activity-controls select{min-width:130px;max-width:100%;padding:8px 30px 8px 10px}.activity-controls [data-activity-student]{width:min(340px,100%)}.activity-controls p{font-size:12px;color:var(--activity-muted);margin:0 0 12px}
.activity-note{font-size:12px;line-height:1.75;color:var(--activity-muted);margin:12px 0;overflow-wrap:anywhere}.activity-updated{border-top:1px solid var(--activity-line);padding-top:16px;margin-top:28px}
.activity-empty,.activity-error{padding:28px 20px;background:var(--activity-paper);border:1px solid var(--activity-line);border-radius:12px;line-height:1.75;overflow-wrap:anywhere}.activity-empty{color:var(--activity-muted);font-size:14px}.activity-error h2{font-size:19px;margin-top:0}.activity-error [role=alert]{color:#9b483c}.activity-error p{font-size:14px}
.activity-table-wrap{max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;border:1px solid var(--activity-line);border-radius:12px;background:var(--activity-paper)}
.activity-table{width:100%;border-collapse:collapse;text-align:left;font-size:13px}.activity-table th,.activity-table td{vertical-align:top;padding:15px 14px;border-bottom:1px solid var(--activity-line);line-height:1.65}.activity-table thead{background:var(--activity-soft)}.activity-table thead th{font-weight:500;color:var(--activity-muted)}.activity-table tbody th{font-weight:400}.activity-table tr:last-child>th,.activity-table tr:last-child>td{border-bottom:0}.activity-table small{display:block;color:var(--activity-muted);font-size:11px;line-height:1.6;margin-top:4px}.activity-table strong{font-weight:600}.activity-table a{text-decoration:none;color:var(--activity-green)}.activity-table a:hover{text-decoration:underline}.activity-overview-table{min-width:980px}.activity-overview-table th:first-child{width:170px}.activity-overview-table td:nth-child(2),.activity-overview-table td:nth-child(3){min-width:135px}.activity-overview-table td:last-child{min-width:215px}.activity-table tr.is-selected{background:var(--activity-soft)}
.activity-coverage-inline{font-size:11px;margin-top:10px;color:var(--activity-muted);font-weight:400;max-width:270px;overflow-wrap:anywhere}.activity-coverage-inline p{margin:4px 0}.activity-coverage-inline>span{display:block}.activity-coverage{font-size:11px;color:var(--activity-muted)}.activity-coverage.is-partial,.activity-coverage.is-unknown{color:#8c642d}.activity-coverage-note{padding:12px 14px;background:var(--activity-soft);border-radius:8px;font-size:12px;line-height:1.7;color:var(--activity-muted);margin:14px 0}.activity-coverage-note>span+span{margin-left:12px}.activity-coverage-note p{margin:4px 0 0}
.activity-metrics{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;margin:18px 0 6px}.activity-metrics>div{padding:12px;background:var(--activity-soft);border-radius:8px;min-width:0}.activity-metrics dt{font-size:12px;color:var(--activity-muted)}.activity-metrics dd{font-size:18px;margin:7px 0 0;overflow-wrap:anywhere}.activity-metrics.is-inline{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0}.activity-metrics.is-inline>div{padding:0;background:none}.activity-metrics.is-inline dt{font-size:11px}.activity-metrics.is-inline dd{font-size:13px;margin:2px 0}
.activity-student{background:var(--activity-paper);padding:22px;border:1px solid var(--activity-line);border-radius:12px;margin:20px 0}.activity-section-heading h2{font-size:20px;margin:0;line-height:1.5}.activity-section-heading h2 strong{font-weight:600}.activity-section-heading h2 small{display:block;font-size:12px;font-weight:400;color:var(--activity-muted)}.activity-section-heading>a,.activity-section-heading>span{font-size:12px}.activity-latest{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:22px 0}.activity-latest dt{font-size:12px;color:var(--activity-muted)}.activity-latest dd{font-size:14px;margin:8px 0 0;overflow-wrap:anywhere}
.activity-daily{margin:28px 0}.activity-day-table{min-width:1160px}.activity-day-table th:first-child{min-width:130px}.activity-day-table td{white-space:nowrap}.activity-day-table [data-activity-day]{display:inline-flex;align-items:center;min-height:32px}.activity-day-yes{color:var(--activity-green);font-weight:600}.activity-muted,.activity-unknown{color:var(--activity-muted)}
.activity-detail{background:var(--activity-paper);border:1px solid var(--activity-line);border-radius:12px;padding:22px;margin:24px 0}.activity-warning{color:#8c642d;font-size:13px;line-height:1.7}.activity-events{list-style:none;padding:0;margin:15px 0 0}.activity-events li{display:grid;grid-template-columns:170px minmax(0,1fr);gap:18px;padding:18px 0;border-top:1px solid var(--activity-line);font-size:14px;line-height:1.7;overflow-wrap:anywhere}.activity-event-time{font-size:12px;color:var(--activity-muted)}.activity-event-time small{display:block}.activity-event-tags{display:flex;flex-wrap:wrap;gap:8px;font-size:11px;color:var(--activity-muted);margin-bottom:6px}.activity-event-type{border-radius:5px;padding:1px 7px;background:var(--activity-soft)}.activity-event-type.is-practice,.activity-event-type.is-submission{color:var(--activity-green)}.activity-events p{margin:6px 0}.activity-events a{display:inline-flex;align-items:center;min-height:36px;font-size:12px}
.follow-up-controls label{flex-direction:row;align-items:center;min-height:44px}.follow-up-controls input{width:18px;height:18px;accent-color:var(--activity-green)}.follow-up-rules{border:1px solid var(--activity-line);border-radius:9px;background:var(--activity-paper);padding:14px 18px;font-size:12px;line-height:1.85}.follow-up-rules summary{cursor:pointer;color:var(--activity-green);min-height:26px}.follow-up-rules ul{padding-left:20px;margin:10px 0 0}.follow-up-rules li+li{margin-top:6px}
.follow-up-list{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;margin:18px 0}.follow-up-card{min-width:0;border:1px solid var(--activity-line);background:var(--activity-paper);border-radius:12px;padding:22px;overflow-wrap:anywhere}.follow-up-card>header{display:flex;justify-content:space-between;align-items:start;gap:16px;flex-wrap:wrap}.follow-up-card h2{font-size:20px;line-height:1.5;margin:0}.follow-up-card h2 a{text-decoration:none}.follow-up-card h2 small{display:block;font-size:12px;color:var(--activity-muted);font-weight:400}.activity-reasons{display:flex;flex-wrap:wrap;gap:7px}.activity-reason{display:inline-block;padding:4px 8px;border-radius:6px;background:var(--activity-soft);font-size:11px;color:var(--activity-green);font-weight:400}.activity-reason.is-overdue{background:#f9e9e1;color:#9b483c}.activity-reason.is-inactive{background:#f6edda;color:#8c642d}.follow-up-inactivity{background:#faf4e8;border-radius:8px;padding:12px 14px;font-size:12px;line-height:1.8}.follow-up-inactivity a{margin-left:8px}.follow-up-card h3{font-size:15px;margin:18px 0 10px}.follow-up-card ul{padding:0;list-style:none;margin:0}.follow-up-card li{display:flex;align-items:start;justify-content:space-between;gap:18px;padding:12px 0;border-bottom:1px solid var(--activity-line);font-size:13px;line-height:1.7;min-width:0}.follow-up-card li>div,.follow-up-card li>span{min-width:0}.follow-up-card li>a{white-space:nowrap;display:inline-flex;align-items:center;min-height:44px;font-size:12px}.follow-up-card li p{margin:5px 0;color:var(--activity-muted);font-size:12px}.follow-up-card li small{color:var(--activity-muted)}.follow-up-homework li .activity-reason{margin-left:10px}.follow-up-reminder{margin:14px 0;font-size:12px}.follow-up-reminder summary{cursor:pointer;min-height:32px}.follow-up-reminder textarea{display:block;width:100%;max-width:100%;min-height:220px;margin-top:8px;resize:vertical;font-size:13px;line-height:1.8}.follow-up-homework>button{font-size:12px}.follow-up-homework>[role=status]{font-size:12px;line-height:1.7;color:var(--activity-green)}.follow-up-card footer{border-top:1px solid var(--activity-line);margin-top:20px;padding-top:12px;font-size:13px}.follow-up-card footer a{display:inline-flex;min-height:36px;align-items:center}.follow-up-review>a{display:inline-flex;min-height:40px;align-items:center;font-size:12px}
.assignment-teacher-entry.is-selected{outline:2px solid var(--green,#45674e);outline-offset:2px}.profile-table tr.is-activity-target{background:var(--profile-soft,#e9efe4)}
@media(max-width:1100px){.activity-metrics{grid-template-columns:repeat(3,minmax(0,1fr))}.activity-latest{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){.activity-tabs{gap:3px;margin-bottom:20px}.activity-tabs a{padding:8px 11px;font-size:13px}.activity-heading h1{font-size:25px}.activity-controls{gap:12px}.activity-controls>label{flex:1 1 140px}.activity-controls select{width:100%;min-width:0}.activity-controls p{flex-basis:100%;margin:0}.activity-student,.activity-detail,.follow-up-card{padding:16px}.activity-coverage-note>span{display:block}.activity-coverage-note>span+span{margin-left:0}.activity-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.activity-metrics dd{font-size:16px}.activity-latest{gap:16px 10px}.activity-latest dd{font-size:13px}.activity-events li{grid-template-columns:minmax(0,1fr);gap:7px}.activity-event-time small{display:inline;margin-left:8px}.follow-up-controls>label{flex:0 1 auto}.follow-up-card li{gap:10px;flex-wrap:wrap}.follow-up-card li>a{min-height:44px}.follow-up-rules{padding:12px 14px}.follow-up-homework li .activity-reason{margin-left:5px}.activity-section-heading{gap:8px}.activity-table th,.activity-table td{padding:12px 10px}}
@media(prefers-reduced-motion:reduce){.teacher-analytics *{scroll-behavior:auto!important}}

/* Explanations are native disclosures, usable by keyboard and touch. */
.activity-rules{font-size:12px;line-height:1.75;color:var(--activity-muted);margin:10px 0;min-width:0;overflow-wrap:anywhere}
.activity-rules>summary,.activity-coverage-details>summary,.follow-up-task-note>summary{cursor:pointer;min-height:32px;padding:5px 0;box-sizing:border-box;width:fit-content;max-width:100%;color:var(--activity-green)}
.activity-rules>div{padding:2px 14px;background:var(--activity-soft);border-radius:8px}.activity-rules p{margin:10px 0}.activity-scope-hint{margin:4px 0 14px}
.activity-coverage-details{min-width:0}.activity-coverage-details>div{margin:4px 0 0;line-height:1.7;max-width:270px;overflow-wrap:anywhere}.activity-coverage-details p{margin:6px 0}.activity-coverage{display:inline-block;border-radius:5px;padding:1px 6px;background:var(--activity-soft)}.activity-coverage.is-partial,.activity-coverage.is-unknown{background:#faf1df}.activity-coverage-inline{margin-top:5px}.activity-coverage-note{padding:4px 12px;margin:12px 0}.follow-up-task-note{font-size:12px;color:var(--activity-muted);max-width:100%;overflow-wrap:anywhere}.follow-up-task-note>summary{min-height:28px}.follow-up-rules>summary{min-height:32px}.follow-up-reminder textarea{box-sizing:border-box}.follow-up-homework>[data-follow-up-copy-status]:empty{display:none}
@media(max-width:720px){.activity-rules>summary,.activity-coverage-details>summary,.follow-up-task-note>summary,.follow-up-rules>summary,.follow-up-reminder>summary{min-height:44px;padding-top:10px;padding-bottom:10px}.activity-rules>div{padding:2px 10px}}

/* Compact reading state: navigation is the heading, not a second hero. */
.teacher-analytics .activity-tabs{margin-bottom:12px}
.teacher-analytics .analytics-toolbar{align-items:center;min-height:44px;margin:0 0 12px;gap:12px}
.activity-toolbar-label,.activity-filter-notice{font-size:13px;color:var(--activity-muted);line-height:1.65}
.activity-filter-notice{margin:8px 0 12px;padding-left:10px;border-left:2px solid var(--activity-line)}
.teacher-analytics .activity-updated{font-size:12px;margin:10px 0}
.analytics-skeleton{padding:16px 0;min-height:112px;max-width:100%}
.analytics-skeleton p{font-size:14px;color:var(--muted,#6e786c);margin:0 0 14px}
.analytics-skeleton>span{display:block;height:12px;max-width:560px;margin:10px 0;background:var(--soft,#e9efe4);border-radius:4px}
.analytics-skeleton>span:last-child{max-width:360px}
/* Secondary navigation is deliberately lighter than the main navigation. */
.teacher-analytics .activity-tabs{gap:24px;padding-bottom:0;margin-bottom:12px}
.teacher-analytics .activity-tabs a{padding:8px 0;min-height:44px;border:0;border-radius:0;background:transparent;color:var(--activity-muted);font-size:14px}
.teacher-analytics .activity-tabs a[aria-current=page]{color:var(--activity-green);background:transparent;box-shadow:inset 0 -2px var(--activity-green);font-weight:600}
@media(max-width:540px){.teacher-analytics .activity-tabs{gap:18px}.teacher-analytics .activity-tabs a{font-size:13px}}