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repeat(var(--topic-count),minmax(92px,1fr));gap:6px;min-width:max-content}.heatmap__head strong{color:var(--muted);font-size:.74rem;text-align:center;text-transform:uppercase;letter-spacing:.06em}.heatmap__row{width:100%;border:0;background:transparent;padding:0;cursor:pointer;text-align:left}.heatmap__row>strong{padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-muted);color:var(--ink);font-size:.84rem}.heatmap__row span{display:grid;place-items:center;min-height:42px;border-radius:var(--radius-sm);border:1px solid rgba(15,118,110,.16);background:linear-gradient(90deg,rgba(15,118,110,.12) var(--value),rgba(244,245,247,.86) var(--value));color:var(--ink);font-weight:800;font-size:.82rem}.heatmap__row:hover span,.heatmap__row:hover>strong{border-color:var(--analytics-teal)}.risk-table{display:grid;gap:8px}.risk-table button{display:grid;grid-template-columns:minmax(180px,2fr) repeat(3,minmax(110px,1fr));align-items:center;gap:var(--space-3);width:100%;padding:var(--space-3) var(--space-4);border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);text-align:left;cursor:pointer;transition:border-color .14s ease,background .14s ease}.risk-table button:hover{border-color:var(--analytics-teal);background:var(--surface-muted)}.risk-table strong,.risk-table small{display:block}.risk-table small{color:var(--muted);margin-top:2px}.risk-table span{color:var(--muted-strong);font-size:.86rem}.risk-badge{justify-self:start;padding:6px 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var(--line);border-radius:999px;background:var(--surface);color:var(--ink);cursor:pointer;transition:background .14s ease,border-color .14s ease}.notifications-drawer__close:hover{background:var(--bg-canvas-2);border-color:var(--line-strong)}.notifications-list{display:grid;gap:var(--space-3)}.notification-card{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr);gap:var(--space-3);width:100%;padding:var(--space-4);border:1px solid var(--line);border-radius:16px;background:var(--surface);color:var(--ink);cursor:pointer;text-align:left;box-shadow:0 1px 2px #0f172a0a;transition:background .14s ease,border-color .14s ease,box-shadow .14s ease,transform .14s ease}.notification-card:hover{background:var(--bg-canvas);border-color:var(--line-strong);box-shadow:var(--shadow-card);transform:translateY(-1px)}.notification-card--unread{background:color-mix(in srgb,var(--info-text) 5%,var(--surface));border-color:color-mix(in srgb,var(--info-text) 32%,var(--line))}.notification-card__icon{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:999px;background:var(--bg-canvas-2);color:var(--ink);flex:0 0 auto}.notification-card__content{display:grid;gap:var(--space-2);min-width:0}.notification-card__topline{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-3);padding-right:12px}.notification-card__title{font-size:.95rem;font-weight:800;line-height:1.3}.notification-card time{color:var(--muted);font-size:.74rem;line-height:1.3;white-space:nowrap}.notification-card__body{display:grid;gap:4px;color:var(--muted-strong);font-size:.9rem;line-height:1.45}.notification-card__line{display:block}.notification-card__line strong{color:var(--ink);font-weight:800}.notification-card__dot{position:absolute;top:14px;right:14px;width:8px;height:8px;border-radius:999px;background:var(--info-text)}.notifications-empty{min-height:220px;display:grid;place-items:center;align-content:center;gap:var(--space-3);padding:var(--space-8);border:1px dashed var(--line);border-radius:16px;background:var(--bg-canvas);color:var(--muted);text-align:center}@keyframes notification-drawer-in{0%{transform:translate(24px);opacity:.8}to{transform:translate(0);opacity:1}}.drawer-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--space-3)}.drawer-metrics span{padding:var(--space-4);border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-muted);color:var(--muted);font-size:.8rem}.drawer-metrics strong{display:block;color:var(--ink);font-size:1.3rem}.drawer-section{display:grid;gap:var(--space-3)}.drawer-section h3{margin:0;font-size:.96rem}.insight-list{display:grid;gap:var(--space-2);padding:0;margin:0;list-style:none}.insight-list li{padding:var(--space-3);border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-muted);color:var(--muted-strong);font-size:.88rem}.filter-banner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:var(--space-3) var(--space-5);border-radius:var(--radius-md);background:var(--warning-bg);border:1px solid var(--warning-text);flex-wrap:wrap}.filter-banner__content{display:flex;align-items:center;gap:var(--space-2);font-size:.9rem;color:var(--warning-text)}.filter-banner__content svg{width:16px;height:16px;flex-shrink:0}.filter-banner__content strong{font-weight:700}.timeline,.checklist,.submission-list,.student-list{display:grid;gap:var(--space-3);padding:0;margin:0;list-style:none}.timeline__item{display:grid;grid-template-columns:14px 1fr;gap:var(--space-4);align-items:start;padding:var(--space-3) 0;border-bottom:1px solid var(--line)}.timeline__item:last-child{border-bottom:none}.timeline__item strong{display:block;color:var(--ink);font-size:.93rem;font-weight:600}.timeline__item p{margin:var(--space-1) 0 0;font-size:.85rem}.timeline__marker{width:12px;height:12px;border-radius:50%;background:var(--danger-bg);border:2px solid var(--danger-text);margin-top:6px}.timeline__marker--good{background:var(--success-bg);border-color:var(--success-text)}.checklist{gap:var(--space-2)}.checklist li{font-size:.92rem;color:var(--muted-strong);line-height:1.6;display:flex;align-items:flex-start;gap:var(--space-2)}.checklist li:before{content:"";flex-shrink:0;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--ink);opacity:.4}.checklist li strong{color:var(--ink)}.homework-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:var(--space-4)}.homework-card{display:grid;gap:var(--space-3);padding:var(--space-5) var(--space-5);border-radius:var(--radius-md);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-card);transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease}.homework-card:hover{border-color:var(--ink);box-shadow:var(--shadow-pop);transform:translateY(-2px)}.homework-card__header{display:flex;justify-content:space-between;align-items:flex-start;gap:var(--space-3)}.homework-card__header h2{font-size:1.02rem;font-weight:700;letter-spacing:-.012em}.homework-card p{font-size:.88rem;margin:0}.tag{display:inline-flex;align-items:center;gap:4px;padding:5px 10px;border-radius:999px;font-size:.72rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;border:1px solid transparent;white-space:nowrap}.tag svg{width:12px;height:12px}.tag--success{background:var(--success-bg);color:var(--success-text)}.tag--warning{background:var(--warning-bg);color:var(--warning-text)}.tag--danger{background:var(--danger-bg);color:var(--danger-text)}.tag--info{background:var(--info-bg);color:var(--info-text)}.tag--muted{background:var(--bg-canvas-2);color:var(--muted-strong)}.difficulty-badge{display:inline-flex;align-items:center;gap:4px;padding:5px 12px;border-radius:999px;background:var(--ink);color:var(--primary-text);font-size:.72rem;font-weight:600;letter-spacing:.02em;white-space:nowrap}.difficulty-badge svg{width:12px;height:12px}.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-4)}.field{display:grid;gap:var(--space-2)}.filter-panel{display:grid;gap:var(--space-4)}.field span{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}.field span svg{width:14px;height:14px;flex:0 0 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h1{margin:0;font-size:clamp(1.55rem,4vw,2rem);line-height:1.2;color:var(--ink);letter-spacing:0}.auth-card-header p{margin:0;color:var(--muted);line-height:1.55}.form-card h2{font-size:1.22rem}.form-error{color:var(--danger-text);margin:0;font-size:.88rem;padding:var(--space-3);background:var(--danger-bg);border-radius:var(--radius-sm)}.form-note{margin:0;font-size:.88rem}.auth-support-text{margin:0;font-size:.82rem;line-height:1.5;color:var(--muted)}.auth-support-text a{color:var(--ink);font-weight:600;text-decoration:underline;text-underline-offset:3px}.form-note a{color:var(--ink);font-weight:600;text-decoration:underline}.custom-select-trigger{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);cursor:pointer;font-family:inherit;text-align:left}.custom-select-trigger:disabled{cursor:not-allowed;color:var(--muted);background:var(--surface-muted)}.custom-select-trigger 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ease}.custom-select-option:hover,.custom-select-option--selected{background:var(--bg-canvas);color:var(--ink)}.grade-unspecified-row{margin-top:var(--space-2)}.loader-card{padding:var(--space-10);display:grid;justify-items:center;gap:var(--space-4)}.loader-card p{color:var(--muted);margin:0;font-size:.93rem}.loader-card__spinner{width:40px;height:40px;border-radius:50%;border:3px solid var(--bg-canvas-2);border-top-color:var(--ink);animation:spin .8s linear infinite}.feedback-box{margin-top:var(--space-4);padding:var(--space-4) var(--space-5);border-radius:var(--radius-md);background:var(--bg-canvas);border:1px solid var(--line);display:flex;gap:var(--space-3);align-items:flex-start}.feedback-box__icon{width:36px;height:36px;border-radius:var(--radius-sm);background:var(--surface);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--ink)}.feedback-box__icon svg{width:18px;height:18px}.feedback-box__body{flex:1}.feedback-box strong{display:block;color:var(--ink);margin-bottom:var(--space-1);font-size:.93rem}.feedback-box p{margin:0;font-size:.88rem;color:var(--muted-strong)}.meter{height:10px;border-radius:999px;background:var(--bg-canvas-2);overflow:hidden;margin:var(--space-4) 0 var(--space-5);border:1px solid var(--line)}.meter__fill{height:100%;border-radius:inherit;background:linear-gradient(90deg,#4b5563,var(--ink));transition:width .32s ease}.submission-row,.student-list__item{display:flex;justify-content:space-between;gap:var(--space-4);padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);background:var(--surface);border:1px solid var(--line);transition:border-color .14s ease,background .14s ease}.submission-row:hover{border-color:var(--line-strong)}.submission-row strong,.student-list__item strong{color:var(--ink);font-size:.93rem;font-weight:600}.submission-row p,.student-list__item span{color:var(--muted);font-size:.82rem;margin:2px 0 0}.student-list__item{width:100%;text-align:left;cursor:pointer;flex-direction:column;gap:var(--space-1)}.student-list__item small{color:var(--muted);font-size:.78rem}.student-list__item--active{border-color:var(--ink);background:var(--bg-canvas)}.student-list__item--active strong{color:var(--ink)}.group-manager-panel{display:grid;gap:var(--space-4)}.group-create-card{display:grid;gap:var(--space-3);padding:var(--space-4);border:1px solid var(--line);border-radius:var(--radius-md);background:linear-gradient(135deg,rgba(37,99,235,.06),transparent 46%),var(--surface-muted)}.group-create-card__tools{display:flex;gap:var(--space-2);flex-wrap:wrap}.group-member-picker{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:var(--space-2);max-height:190px;overflow:auto;padding-right:4px}.group-shell{display:grid;grid-template-columns:minmax(180px,.85fr) 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ease}.student-group-card:hover{background:var(--bg-canvas);border-color:var(--line-strong);box-shadow:var(--shadow-card)}.student-group-card--selected{background:var(--surface-muted);border-color:var(--ink-soft);box-shadow:inset 0 0 0 1px #1f293714}.student-group-card__text{display:grid;gap:4px;min-width:0}.student-group-card__text strong{color:var(--ink);font-size:1rem;line-height:1.25;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.student-group-card__text span{color:var(--muted);font-size:.9rem}.student-group-card__delete{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;width:34px;height:34px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--muted);cursor:pointer;transition:background .14s ease,border-color .14s ease,color .14s ease}.student-group-card__delete:hover{background:var(--danger-bg);border-color:color-mix(in srgb,var(--danger-text) 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span{color:var(--subtle);font-size:.78rem}.analytics-student-card__meta{color:var(--muted-strong);font-size:.78rem}.group-detail-card{min-height:230px;padding:var(--space-4);border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface)}.group-detail-card__header{display:flex;justify-content:space-between;gap:var(--space-3);margin-bottom:var(--space-3)}.group-detail-card__header strong,.group-detail-card__header span{display:block}.group-detail-card__header span{color:var(--muted);font-size:.82rem}.group-member-row{display:flex;justify-content:space-between;gap:var(--space-3);align-items:center;padding:var(--space-2) var(--space-3);border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-muted)}.group-member-row strong,.group-member-row small{display:block}.group-member-row 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