:root{--edu-sidebar-bg:var(--primary-dark);--edu-sidebar-fg:var(--text-on-primary);--edu-sidebar-fg-dim:var(--text-on-sidebar);--edu-sidebar-width:15.625rem;--edu-rail-width:17.5rem;--edu-active-gold:#f5b301;--edu-active-gold-fg:#3a2c00;--edu-hit-area:2.75rem;--edu-pill-green-bg:var(--fb-correct-bg-from);--edu-pill-green-fg:var(--fb-correct-text);--edu-pill-amber-bg:var(--warning-bg);--edu-pill-amber-fg:var(--warning-text);--edu-pill-red-bg:var(--fb-wrong-bg-from);--edu-pill-red-fg:var(--fb-wrong-text)}.edu-skip-link{position:absolute;left:var(--space-2);top:calc(-1 * var(--space-12));z-index:100;padding:var(--space-2) var(--space-4);background:var(--primary);color:var(--text-on-primary);border-radius:var(--radius-sm);font-weight:600;transition:top var(--transition)}.edu-skip-link:focus{top:var(--space-2);outline:.1875rem solid var(--border-focus);outline-offset:0.125rem}.edu-shell{display:grid;grid-template-columns:var(--edu-sidebar-width) minmax(0,1fr) var(--edu-rail-width);gap:var(--space-5);align-items:start}.edu-sidebar{background:var(--edu-sidebar-bg);color:var(--edu-sidebar-fg);border-radius:var(--radius-lg);padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-4);position:sticky;top:var(--space-4)}.edu-sidebar h2{font-size:.75rem;text-transform:uppercase;letter-spacing:.0625rem;color:var(--edu-sidebar-fg);margin:0 0 var(--space-2)}.edu-class-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--space-1)}.edu-class-item{display:block;width:100%;text-align:left;background:0 0;color:var(--edu-sidebar-fg);border:none;border-radius:var(--radius-sm);padding:var(--space-2) var(--space-3);font-size:.875rem;font-weight:600;cursor:pointer;min-height:var(--edu-hit-area)}.edu-class-item:hover{background:rgba(255,255,255,.12)}.edu-class-item:focus-visible{outline:.1875rem solid var(--edu-active-gold);outline-offset:0.125rem}.edu-class-item[aria-current=true]{background:var(--edu-active-gold);color:var(--edu-active-gold-fg)}.edu-class-item .edu-class-meta{display:block;font-size:.6875rem;font-weight:400;color:var(--edu-sidebar-fg)}.edu-class-item[aria-current=true] .edu-class-meta{color:var(--edu-active-gold-fg)}.edu-joincode-chip{display:inline-flex;align-items:center;gap:var(--space-2);background:rgba(255,255,255,.14);color:var(--edu-sidebar-fg);border:var(--hairline) solid rgba(255,255,255,.25);border-radius:var(--radius-sm);padding:var(--space-2) var(--space-3);font-family:monospace;font-size:.9375rem;letter-spacing:.125rem;cursor:pointer;min-height:var(--edu-hit-area)}.edu-joincode-chip:hover{background:rgba(255,255,255,.24)}.edu-joincode-chip:focus-visible{outline:.1875rem solid var(--edu-active-gold);outline-offset:0.125rem}.edu-sidebar-pinned{margin-top:auto}.edu-new-assignment-btn{width:100%}.edu-main{display:flex;flex-direction:column;gap:var(--space-5);min-width:0}.edu-class-title{margin:0 0 var(--space-1)}.edu-class-subtitle{color:var(--text-muted);font-size:.875rem;margin:0}.edu-atrisk{border:.125rem solid var(--warning);border-radius:var(--radius);background:var(--bg-card);padding:var(--space-4)}.edu-atrisk h3{margin:0 0 var(--space-3);font-size:1rem;color:var(--warning-text)}.edu-atrisk-empty{border:var(--hairline) solid var(--border);border-radius:var(--radius);background:var(--bg-card);padding:var(--space-4);color:var(--success-text);font-weight:600}.edu-atrisk-cards{display:flex;flex-direction:column;gap:var(--space-3)}.edu-atrisk-card{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--space-3);border:var(--hairline) solid var(--border);border-left:.25rem solid var(--warning);border-radius:var(--radius-sm);padding:var(--space-3)}.edu-atrisk-card[data-severity=high]{border-left-color:var(--danger)}.edu-atrisk-card-body{flex:1;min-width:0}.edu-atrisk-name{font-weight:700;font-size:.9375rem}.edu-atrisk-reason{color:var(--text-muted);font-size:.8125rem;margin-top:var(--space-1)}.edu-atrisk-actions{display:flex;gap:var(--space-2);flex-shrink:0;flex-wrap:wrap;align-items:center}.edu-atrisk-dismiss{display:inline-flex;align-items:center;justify-content:center;min-width:var(--edu-hit-area);min-height:var(--edu-hit-area);background:0 0;border:var(--hairline) solid var(--border);border-radius:var(--radius-sm);color:var(--text-muted);font-size:.875rem;cursor:pointer}.edu-atrisk-dismiss:hover{background:var(--bg);color:var(--text)}.edu-atrisk-dismiss:focus-visible{outline:.1875rem solid var(--border-focus);outline-offset:0.125rem}.edu-atrisk-errchip{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--space-3);border:.125rem solid var(--danger);border-radius:var(--radius);background:var(--bg-card);padding:var(--space-3) var(--space-4);color:var(--danger);font-weight:600}.edu-roster-wrap{overflow-x:auto}.edu-roster{width:100%;border-collapse:collapse;font-size:.875rem}.edu-roster caption{text-align:left;color:var(--text-muted);font-size:.75rem;padding-bottom:var(--space-2)}.edu-roster td,.edu-roster th{text-align:left;padding:var(--space-2) var(--space-3);border-bottom:var(--hairline) solid var(--border)}.edu-roster thead th{font-size:.75rem;color:var(--text-muted);font-weight:600;border-bottom:.125rem solid var(--border)}.edu-sort-btn{display:inline-flex;align-items:center;gap:var(--space-1);background:0 0;border:none;color:inherit;font:inherit;font-weight:600;cursor:pointer;padding:var(--space-1) 0}.edu-sort-btn:focus-visible{outline:.1875rem solid var(--border-focus);outline-offset:0.125rem}.edu-sort-btn .edu-sort-arrow{font-size:.625rem;opacity:.7}.edu-roster-name{font-weight:600}.edu-pill{display:inline-block;min-width:2.75rem;text-align:center;padding:.1875rem var(--space-2);border-radius:var(--radius-full);font-size:.75rem;font-weight:700}.edu-pill--green{background:var(--edu-pill-green-bg);color:var(--edu-pill-green-fg)}.edu-pill--amber{background:var(--edu-pill-amber-bg);color:var(--edu-pill-amber-fg)}.edu-pill--red{background:var(--edu-pill-red-bg);color:var(--edu-pill-red-fg)}.edu-pill--none{background:var(--bg);color:var(--text-muted);font-weight:400}.edu-roster-actions{display:flex;gap:var(--space-1)}.edu-icon-btn{display:inline-flex;align-items:center;justify-content:center;min-width:var(--edu-hit-area);min-height:var(--edu-hit-area);background:0 0;border:var(--hairline) solid var(--border);border-radius:var(--radius-sm);font-size:1rem;cursor:pointer;color:var(--text)}.edu-icon-btn:hover{background:var(--bg)}.edu-icon-btn:focus-visible{outline:.1875rem solid var(--border-focus);outline-offset:0.125rem}.edu-icon-btn--sm{min-width:var(--edu-hit-area);min-height:var(--edu-hit-area);font-size:.875rem;padding:var(--space-1) var(--space-2)}.edu-rail{display:flex;flex-direction:column;gap:var(--space-4);position:sticky;top:var(--space-4)}.edu-rail-card{background:var(--bg-card);border:var(--hairline) solid var(--border);border-radius:var(--radius);padding:var(--space-4)}.edu-rail-card h3{margin:0 0 var(--space-3);font-size:.9375rem}.edu-rail-note{font-size:.75rem;color:var(--text-muted);margin:var(--space-2) 0 0}.edu-readiness-bar{display:flex;width:100%;height:1.25rem;border-radius:var(--radius-full);overflow:hidden;border:var(--hairline) solid var(--border)}.edu-readiness-seg{height:100%}.edu-readiness-seg--ontrack{background:var(--success)}.edu-readiness-seg--developing{background:var(--warning)}.edu-readiness-seg--atrisk{background:var(--danger)}.edu-readiness-legend{display:flex;flex-wrap:wrap;gap:var(--space-3);margin-top:var(--space-2);font-size:.75rem;color:var(--text-muted)}.edu-readiness-legend span{display:inline-flex;align-items:center;gap:var(--space-1)}.edu-legend-dot{width:.625rem;height:.625rem;border-radius:var(--radius-full);display:inline-block}.edu-legend-dot--ontrack{background:var(--success)}.edu-legend-dot--developing{background:var(--warning)}.edu-legend-dot--atrisk{background:var(--danger)}.edu-flag-item{border:var(--hairline) solid var(--border);border-radius:var(--radius-sm);padding:var(--space-2) var(--space-3);margin-bottom:var(--space-2);font-size:.8125rem}.edu-flag-meta{color:var(--text-muted);font-size:.6875rem}.edu-composer label{display:block;font-size:.75rem;color:var(--text-muted);margin-bottom:var(--space-1)}.edu-composer select,.edu-composer textarea{width:100%;box-sizing:border-box;padding:var(--space-2);border:var(--hairline) solid var(--border);border-radius:var(--radius-sm);font-size:.875rem;font-family:inherit;margin-bottom:var(--space-3)}.edu-composer textarea{resize:vertical}.edu-skeleton{border-radius:var(--radius-sm);background:linear-gradient(90deg,var(--border) 25%,var(--bg) 50%,var(--border) 75%);background-size:200% 100%;animation:1.4s infinite edu-shimmer}.edu-skeleton-row{height:2.5rem;margin-bottom:var(--space-2)}@keyframes edu-shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}@media (prefers-reduced-motion:reduce){.edu-skeleton{animation:none;background:var(--border)}.edu-skip-link{transition:none}}.edu-state{background:var(--bg-card);border:var(--hairline) solid var(--border);border-radius:var(--radius);padding:var(--space-10) var(--space-6);text-align:center}.edu-state h3{margin:0 0 var(--space-2)}.edu-state p{margin:0 0 var(--space-4);color:var(--text-muted)}.edu-state--error{border-color:var(--danger)}@media (max-width:64rem){.edu-shell{grid-template-columns:var(--edu-sidebar-width) minmax(0,1fr)}.edu-rail{grid-column:1/-1;flex-direction:row;flex-wrap:wrap;position:static}.edu-rail-card{flex:1;min-width:15rem}}@media (max-width:48rem){.edu-shell{grid-template-columns:1fr}.edu-sidebar{position:static;flex-direction:column}.edu-rail{flex-direction:column}}