:root{--font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI", "Helvetica Neue", Arial, sans-serif;--bg: #f5f5f7;--bg-elevated: #ffffff;--text: #1d1d1f;--text-secondary: #6e6e73;--text-tertiary: #86868b;--separator: rgba(60, 60, 67, .12);--accent: #0071e3;--accent-hover: #0077ed;--accent-pressed: #006edb;--danger: #ff3b30;--radius-xl: 20px;--radius-lg: 14px;--radius-md: 10px;--radius-sm: 8px;--shadow-card: 0 2px 12px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-float: 0 8px 32px rgba(0, 0, 0, .08);--max-content: 1100px;--classroom-board-max-w: 960px;--sidebar-w: 260px}*,*:before,*:after{box-sizing:border-box}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;font-family:var(--font);font-size:17px;line-height:1.47;color:var(--text);background:var(--bg);min-height:100dvh}#root{min-height:100dvh}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1{font-size:34px;font-weight:600;letter-spacing:-.02em;margin:0 0 8px;color:var(--text)}h2{font-size:22px;font-weight:600;letter-spacing:-.01em;margin:0 0 12px}h3{font-size:19px;font-weight:600;margin:0 0 8px}p.muted{color:var(--text-secondary);font-size:15px;margin:0 0 16px;line-height:1.5}.app-root{min-height:100dvh;display:flex;flex-direction:column}.app-body{display:flex;flex:1;max-width:calc(var(--max-content) + var(--sidebar-w));margin:0 auto;width:100%;padding:24px 20px 48px;gap:28px}@media(max-width:880px){.app-body{flex-direction:column;padding:16px 16px 40px}}.sidebar{width:var(--sidebar-w);flex-shrink:0;position:sticky;top:24px;align-self:flex-start;background:var(--bg-elevated);border-radius:var(--radius-xl);padding:20px 12px;box-shadow:var(--shadow-card);border:1px solid var(--separator)}@media(max-width:880px){.sidebar{width:100%;position:relative;top:0;display:flex;flex-wrap:wrap;gap:6px;padding:12px}}.sidebar-brand{padding:8px 12px 16px;border-bottom:1px solid var(--separator);margin-bottom:12px}@media(max-width:880px){.sidebar-brand{width:100%;border-bottom:none;margin-bottom:4px;padding-bottom:8px}}.sidebar-title{font-size:13px;font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.04em;margin:0 0 4px}.sidebar-product{font-size:17px;font-weight:600;color:var(--text);letter-spacing:-.01em}.nav-link{display:block;padding:10px 14px;border-radius:var(--radius-md);color:var(--text);font-size:15px;font-weight:500;text-decoration:none!important;transition:background .15s ease}.nav-link:hover{background:#0000000a}.nav-link.active{background:#0071e31a;color:var(--accent)}.sidebar-user{margin-top:20px;padding:14px;border-top:1px solid var(--separator);font-size:13px;color:var(--text-secondary)}@media(max-width:880px){.sidebar-user{width:100%;margin-top:12px}}.main-col{flex:1;min-width:0}.page-head{margin-bottom:24px}.card{background:var(--bg-elevated);border-radius:var(--radius-xl);padding:28px;margin-bottom:20px;box-shadow:var(--shadow-card);border:1px solid var(--separator)}.card-tight{padding:20px}.field{margin-bottom:16px}.field label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.input,.textarea,.select{width:100%;max-width:420px;padding:12px 14px;font-size:17px;font-family:inherit;border:1px solid var(--separator);border-radius:var(--radius-md);background:var(--bg-elevated);color:var(--text);outline:none;transition:border-color .15s,box-shadow .15s}.input:focus,.textarea:focus,.select:focus{border-color:var(--accent);box-shadow:0 0 0 3px #0071e326}.textarea{min-height:100px;resize:vertical;max-width:100%}.row{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}.btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 22px;font-size:15px;font-weight:500;font-family:inherit;border-radius:980px;border:none;cursor:pointer;transition:background .15s,transform .1s}.btn:active{transform:scale(.98)}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:#0000000d;color:var(--accent)}.btn-secondary:hover{background:#00000014}.btn-ghost{background:transparent;color:var(--accent)}.table-wrap{overflow-x:auto;border-radius:var(--radius-md);border:1px solid var(--separator)}.data-table{width:100%;border-collapse:collapse;font-size:14px}.data-table th,.data-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--separator)}.data-table th{font-weight:600;color:var(--text-secondary);background:#00000005}.data-table tr:last-child td{border-bottom:none}.item-list{list-style:none;margin:0;padding:0}.item-list li{padding:14px 0;border-bottom:1px solid var(--separator)}.item-list li:last-child{border-bottom:none}.item-list>li.hw-batch-block{padding:0;border-bottom:none}.item-list>li.hw-single-block{padding:0;border-bottom:none}.auth-page{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(180deg,#e8e8ed 0%,var(--bg) 40%)}.auth-card{width:100%;max-width:400px;background:var(--bg-elevated);padding:40px 36px;border-radius:var(--radius-xl);box-shadow:var(--shadow-float);border:1px solid var(--separator)}.auth-card h1{font-size:28px;text-align:center;margin-bottom:8px}.auth-card .muted{text-align:center}.chat-log{max-height:360px;overflow-y:auto;padding:12px;background:#00000005;border-radius:var(--radius-lg);border:1px solid var(--separator)}.chat-bubble{margin-bottom:12px;padding:10px 14px;background:var(--bg-elevated);border-radius:var(--radius-md);border:1px solid var(--separator);font-size:15px}.chat-meta,.chat-bubble-meta{font-size:12px;color:var(--text-tertiary);margin-bottom:6px}.chat-layout{display:grid;grid-template-columns:minmax(240px,320px) 1fr;gap:20px;align-items:start}@media(max-width:840px){.chat-layout{grid-template-columns:1fr}}.chat-sidebar{position:sticky;top:16px}.chat-main{min-height:320px}.chat-thread-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.chat-delete-btn{border-color:#ff3b3073;color:var(--danger);flex-shrink:0}.chat-delete-btn:hover{background:#ff3b3014}.chat-add-members-trigger{margin-top:0;margin-bottom:0}.chat-add-members-form{margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--separator)}.chat-add-members-list{list-style:none;padding:0;margin:0 0 12px}.chat-add-members-list li{margin-bottom:8px}.chat-add-members-list label{display:flex;align-items:center;gap:8px;cursor:pointer}.chat-add-members-empty{font-size:14px;margin:0 0 16px}.chat-participants-trigger{margin-top:0;margin-bottom:0}.chat-participants-list{list-style:none;margin:0 0 16px;padding:0;border:1px solid var(--separator);border-radius:var(--radius-md);background:#00000005;overflow:hidden}.chat-participants-list__item{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 12px;padding:10px 14px;border-bottom:1px solid var(--separator);font-size:15px}.chat-participants-list__item:last-child{border-bottom:none}.chat-participants-list__name{font-weight:600}.chat-participants-list__role{font-size:12px;color:var(--text-secondary);padding:2px 8px;border-radius:999px;background:#3c3c4314}.chat-participants-empty{font-size:14px;margin:0 0 12px}.chat-bubble--self{margin-left:auto;max-width:85%;border-color:#0071e340;background:#0071e30f}.badge{display:inline-block;padding:4px 10px;border-radius:980px;font-size:12px;font-weight:500;background:#0000000f;color:var(--text-secondary)}.error-banner{padding:12px 14px;background:#ff3b301a;color:var(--danger);border-radius:var(--radius-md);font-size:14px;margin-bottom:16px}.ok-banner{padding:12px 14px;background:#34c7591f;color:#1a7f3e;border-radius:var(--radius-md);font-size:14px;margin-bottom:16px}.disclosure-trigger{width:100%;text-align:left;display:flex;align-items:center;justify-content:space-between;padding:12px 0;background:none;border:none;font:inherit;font-weight:600;color:var(--accent);cursor:pointer}.disclosure-trigger:hover{opacity:.85}.cal-legend{display:flex;flex-wrap:wrap;gap:16px 24px;margin-bottom:16px;font-size:14px}.cal-legend span{display:inline-flex;align-items:center;gap:8px}.cal-swatch{width:14px;height:14px;border-radius:4px;border:1px solid rgba(0,0,0,.08)}.cal-swatch--avail{background:#007aff38}.cal-swatch--book{background:#34c75959}.cal-swatch--lesson-done{background:#3078468c}.cal-swatch--lesson-cancelled{background:repeating-linear-gradient(-45deg,#78787859,#78787859 4px,#c8505040 4px,#c8505040 8px)}.schedule-completed-summary{font-size:14px;line-height:1.45;margin-bottom:16px;padding:12px 16px;border-radius:var(--radius-lg);background:var(--bg-elevated);border:1px solid var(--separator)}.schedule-completed-summary__label{font-weight:600}.schedule-mode-tabs{margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid var(--separator)}.schedule-mode-tab-row{display:flex;flex-wrap:wrap;gap:10px}.schedule-mode-tab{flex:1 1 auto;min-width:160px}.schedule-mode-hint{margin-top:10px;margin-bottom:0;line-height:1.45}.schedule-week-wrap{overflow-x:auto;border:1px solid var(--separator);border-radius:var(--radius-lg);background:var(--bg-elevated)}.schedule-grid{display:grid;grid-template-columns:48px repeat(7,minmax(72px,1fr));min-width:560px}.schedule-corner{border-bottom:1px solid var(--separator);border-right:1px solid var(--separator)}.schedule-dayhead{padding:8px 6px;text-align:center;font-size:12px;font-weight:600;border-bottom:1px solid var(--separator);border-right:1px solid var(--separator);background:#00000005}.schedule-time{padding:4px 6px 0;font-size:11px;color:var(--text-tertiary);text-align:right;border-right:1px solid var(--separator);border-bottom:1px solid var(--separator);display:flex;align-items:flex-start;justify-content:flex-end}.schedule-cell{border-right:1px solid var(--separator);border-bottom:1px solid var(--separator);min-height:22px;cursor:default;background:#00000004}.schedule-cell--avail{background:#007aff2e;cursor:pointer}.schedule-cell--avail:hover{filter:brightness(.97)}.schedule-cell--book{background:#34c75961}.schedule-cell--book.schedule-cell--lesson-done{background:#3078466b}.schedule-cell--book.schedule-cell--lesson-cancelled{background:repeating-linear-gradient(-45deg,#5a5a5a33,#5a5a5a33 3px,#c85a5a38 3px,#c85a5a38 6px)}.schedule-cell--book.schedule-cell--lesson-progress{background:#ff950061}.month-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;max-width:420px}.month-dow{font-size:11px;text-align:center;color:var(--text-tertiary)}.month-day{aspect-ratio:1;border-radius:10px;border:1px solid var(--separator);background:var(--bg-elevated);font-size:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;padding:4px}.month-day:hover{border-color:var(--accent)}.month-day--muted{opacity:.45;cursor:default}.month-day--active{outline:2px solid var(--accent);outline-offset:1px}.month-dots{display:flex;gap:3px;margin-top:4px}.month-dot{width:5px;height:5px;border-radius:50%}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100}.modal-card{background:var(--bg-elevated);border-radius:var(--radius-xl);padding:28px;max-width:400px;width:100%;border:1px solid var(--separator);box-shadow:var(--shadow-float)}.classroom-page{display:flex;flex-direction:column;height:calc(100vh - 80px);min-height:520px;gap:12px}.classroom-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:10px 12px;background:var(--bg-elevated);border:1px solid var(--separator);border-radius:var(--radius-md)}.classroom-board-mode{display:flex;flex-wrap:wrap;gap:6px}.classroom-tool{min-width:36px;padding:6px 10px}.classroom-tool.active-tool{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.classroom-main{flex:1;display:grid;grid-template-columns:minmax(280px,1fr) minmax(320px,2fr);gap:12px;min-height:0}@media(max-width:900px){.classroom-main{grid-template-columns:1fr}}.classroom-video-panel{display:flex;flex-direction:column;gap:8px;min-height:0}.classroom-video-grid{flex:1;display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px;min-height:160px;overflow:auto}.classroom-video{background:#111;border-radius:var(--radius-md);overflow:hidden;aspect-ratio:16/10;position:relative}.classroom-video video{width:100%;height:100%;object-fit:cover}.classroom-video-label{position:absolute;left:6px;bottom:4px;background:#0000008c;color:#fff;font-size:11px;padding:2px 6px;border-radius:4px}.classroom-board-panel{display:flex;flex-direction:column;background:var(--bg-elevated);border:1px solid var(--separator);border-radius:var(--radius-md);padding:8px;min-height:280px;min-width:0}.classroom-board-wrap{flex:1;position:relative;min-height:200px;border-radius:var(--radius-sm);overflow:hidden;background:#fff;border:1px solid var(--separator)}.classroom-board-wrap canvas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;touch-action:none}.classroom-status{margin-left:auto;font-size:12px;color:var(--text-secondary)}.lessons-multi{margin:8px 0;max-height:140px;overflow:auto;border:1px solid var(--separator);border-radius:var(--radius-sm);padding:8px}.lessons-multi label{display:flex;align-items:center;gap:8px;font-size:14px;margin-bottom:6px;cursor:pointer}.lessons-multi label:last-child{margin-bottom:0}.lesson-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}.lesson-action-link{font-size:13px;color:var(--accent);text-decoration:none}.lesson-action-link:hover{text-decoration:underline}.classroom-panel .classroom-video-grid{margin-top:10px}.classroom-video-tile{background:#111;border-radius:var(--radius-md);overflow:hidden;aspect-ratio:16/10;position:relative;min-width:0}.classroom-board-card .classroom-board-tools{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px}.classroom-color-label,.classroom-size-label{display:flex;align-items:center;gap:8px;font-size:14px}.classroom-canvas-wrap{position:relative;min-height:280px;border-radius:var(--radius-sm);overflow:hidden;background:#fff;border:1px solid var(--separator)}.classroom-canvas-wrap .classroom-canvas{display:block;width:100%;height:100%;min-height:280px;touch-action:none}.classroom-log{font-size:12px;max-height:160px;overflow:auto;margin:0;white-space:pre-wrap;word-break:break-word}.app-root.app-root--classroom{min-height:100dvh;display:block;flex:unset;height:auto;overflow-x:clip;overflow-y:visible}.app-root.app-root--classroom>*{flex:unset;min-height:unset}.classroom-full{display:block;min-height:100dvh;background:var(--bg);padding:12px 16px 16px;box-sizing:border-box;overflow-x:clip;overflow-y:visible;width:100%;max-width:100%}.classroom-topbar{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:12px}.classroom-title{margin:0 0 4px;font-size:1.35rem}.classroom-sub{margin:0;font-size:14px}.classroom-top-actions{display:flex;align-items:center;gap:10px}.classroom-pill{font-size:12px;padding:4px 10px;border-radius:999px;background:var(--bg-elevated);border:1px solid var(--separator);color:var(--text-secondary)}.classroom-pill--ok{border-color:#12a15073;color:#12a150;background:#12a15014}.classroom-pill--warn{border-color:#e02d3c73;color:#c41c2b;background:#e02d3c1a}.classroom-banner{margin-bottom:10px}.classroom-main-scroll{width:100%;max-width:100%;overflow-x:clip;box-sizing:border-box;display:flex;flex-direction:column;gap:16px}.classroom-split-scroll{display:grid;grid-template-columns:minmax(260px,340px) 1fr;gap:14px;align-items:start;width:100%;max-width:100%;overflow-x:clip;box-sizing:border-box}@media(max-width:960px){.classroom-split-scroll{grid-template-columns:1fr}}.classroom-split{flex:1;display:grid;grid-template-columns:minmax(260px,340px) 1fr;gap:14px;min-height:0}@media(max-width:960px){.classroom-split{grid-template-columns:1fr}}.classroom-float-panel{display:flex;min-width:0;align-self:start;position:relative;z-index:1}.classroom-float-panel--stack{flex-direction:column;gap:6px;width:100%}.classroom-float-panel--side{flex-direction:row;align-items:stretch;gap:0;width:100%}.classroom-float-panel--dragging{z-index:30}.classroom-float-handle{flex-shrink:0;display:flex;align-items:center;justify-content:center;padding:0;margin:0;border:none;background:#0f172a0f;color:var(--text-secondary);cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none;box-sizing:border-box}.classroom-float-handle:hover{background:#1570ef1a;color:var(--accent)}.classroom-float-panel--dragging .classroom-float-handle{cursor:grabbing}.classroom-float-handle--top{width:100%;height:22px;border-radius:var(--radius-md) var(--radius-md) 0 0;border:1px solid var(--separator);border-bottom:none}.classroom-float-panel--stack .classroom-float-body{border:1px solid var(--separator);border-top:none;border-radius:0 0 var(--radius-md) var(--radius-md);padding:10px;box-sizing:border-box}.classroom-float-handle--left{width:22px;min-height:48px;border-radius:var(--radius-md) 0 0 var(--radius-md);border:1px solid var(--separator);border-right:none}.classroom-float-panel--side .classroom-float-body{border-radius:0 var(--radius-md) var(--radius-md) 0;flex:1;min-width:0}.classroom-float-grip{display:block;width:18px;height:10px;background:linear-gradient(to bottom,currentColor,currentColor 2px,transparent 2px,transparent 4px,currentColor 4px,currentColor 6px,transparent 6px,transparent 8px,currentColor 8px,currentColor 10px);opacity:.55}.classroom-float-handle--left .classroom-float-grip{width:10px;height:18px;background:linear-gradient(to right,currentColor,currentColor 2px,transparent 2px,transparent 4px,currentColor 4px,currentColor 6px,transparent 6px,transparent 8px,currentColor 8px,currentColor 10px)}.classroom-float-body.classroom-board-toolbar{border-left:none;border-top-left-radius:0;border-bottom-left-radius:var(--radius-md)}.classroom-video-float-stack{display:flex;flex-direction:column;gap:10px}.classroom-video-col{display:flex;flex-direction:column;gap:10px;min-height:0;position:static;align-self:start}.classroom-video-col--archived{opacity:.85;padding:12px;background:var(--bg-elevated);border:1px solid var(--separator);border-radius:var(--radius-md);align-self:start}.classroom-archive-recording-title{font-size:14px;font-weight:600;margin:0 0 8px}.classroom-archive-video{width:100%;max-height:min(52vh,440px);border-radius:var(--radius-md);background:#111}.classroom-video-strip{display:flex;flex-direction:column;gap:8px}.classroom-video-tile{background:#111;border-radius:var(--radius-md);overflow:hidden;position:relative;aspect-ratio:16 / 10;border:2px solid transparent}.classroom-video-tile--live{border-color:#1570ef73}.classroom-video-tile .classroom-video{width:100%;height:100%;object-fit:cover;display:block}.classroom-media-bar{display:flex;flex-wrap:wrap;gap:8px}.classroom-media-btn--active{background:#1570ef1f;border-color:var(--accent);color:var(--accent)}.classroom-media-btn--rec-stop{border-color:#e02d3c8c;color:#c41c2b;background:#e02d3c14}.classroom-hint{font-size:13px;margin:0}.classroom-board-col{display:flex;flex-direction:column;gap:8px;min-height:0;min-width:0;padding-right:12px;overflow-x:clip;box-sizing:border-box;width:100%;max-width:var(--classroom-board-max-w);justify-self:center}.classroom-board-col--screen-share{max-width:min(1400px,100%)}@media(min-width:1200px){.classroom-board-col--screen-share{max-width:min(92vw,1600px)}}.classroom-board-col--screen-share .classroom-screen-share-panel{max-width:none}.classroom-board-col--screen-share .classroom-screen-share-panel__viewport{min-height:min(56vh,620px);max-height:min(74vh,900px)}.classroom-board-col--screen-share .classroom-screen-share-panel__video{max-height:min(74vh,900px)}.classroom-board-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:10px;background:var(--bg-elevated);border:1px solid var(--separator);border-radius:var(--radius-md)}.classroom-board-toolbar .toolbar-label{font-size:12px;font-weight:600;color:var(--text-secondary);margin-right:4px}.classroom-board-toolbar .btn-sm{padding:6px 10px;font-size:13px}.classroom-board-toolbar .toolbar-range{display:flex;align-items:center;gap:8px;font-size:13px}.classroom-board-toolbar .toolbar-hint{font-size:12px;margin-left:auto}.classroom-selection-bar{font-size:13px;padding:8px 10px;background:#1570ef14;border:1px solid rgba(21,112,239,.25);border-radius:var(--radius-md)}.color-presets{display:flex;align-items:center;gap:6px}.color-dot{width:22px;height:22px;border-radius:6px;border:2px solid transparent;cursor:pointer;padding:0}.color-dot--on{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.color-native{width:32px;height:28px;padding:0;border:none;cursor:pointer;border-radius:6px}.classroom-board-scroll{flex:1;overflow:auto;min-height:320px;border:1px solid var(--separator);border-radius:var(--radius-md);background:#e8eaef}.classroom-board-stack-wrap{min-height:320px;border:1px solid var(--separator);border-radius:var(--radius-md);background:#e8eaef;width:100%;box-sizing:border-box}.classroom-board-canvas-stack{position:relative;display:inline-block;vertical-align:top}.classroom-canvas-fixed{display:block;touch-action:none;cursor:crosshair}.classroom-screen-share-panel{width:100%;max-width:var(--classroom-board-max-w, 960px);margin-bottom:14px;border-radius:var(--radius-md);border:1px solid var(--separator);background:#0a0f1a;overflow:hidden;box-shadow:var(--shadow-card)}.classroom-screen-share-panel__bar{display:flex;align-items:center;padding:8px 12px;background:linear-gradient(180deg,#111827,#0f172a);border-bottom:1px solid rgba(255,255,255,.06)}.classroom-screen-share-panel__title{font-size:13px;font-weight:600;color:#e2e8f0;letter-spacing:.02em}.classroom-screen-share-panel__viewport{display:flex;align-items:center;justify-content:center;min-height:min(52vh,520px);max-height:min(68vh,760px);background:#020617;padding:0}.classroom-screen-share-panel__video{display:block;width:100%;height:auto;max-height:min(68vh,760px);object-fit:contain;vertical-align:middle}.classroom-cursors{position:absolute;left:0;top:0;pointer-events:none}.remote-cursor{position:absolute;pointer-events:none;transform:translate(-2px,-2px)}.remote-cursor-label{position:absolute;left:8px;top:0;display:inline-flex;align-items:center;gap:4px;font-size:11px;padding:2px 6px 2px 5px;background:#1570efeb;color:#fff;border-radius:4px;white-space:nowrap}.remote-cursor-icon{flex-shrink:0;display:block;opacity:.92}.classroom-log-details{margin-top:10px;font-size:13px}.classroom-log-details summary{cursor:pointer;color:var(--text-secondary)}.lesson-connect-btn{font-size:13px;padding:6px 12px;border-radius:var(--radius-sm);border:1px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer;text-decoration:none;display:inline-block}.lesson-connect-btn:hover{filter:brightness(1.05)}.lesson-connect-btn--archived{background:var(--bg-elevated);color:var(--text-secondary);border-color:var(--separator)}.lessons-student-note{font-size:14px;margin:8px 0 0}.multi-select-hint{font-size:13px;color:var(--text-secondary);margin:0 0 8px}.avail-paint-toolbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:12px}.avail-paint-toolbar .active-tool{border-color:var(--accent)}.schedule-cell--select-book{outline:2px solid var(--accent);outline-offset:-2px}.schedule-cell--select-avail{outline:2px solid rgba(255,149,0,.9);outline-offset:-2px}.hw-media-preview{margin:10px 0 12px}.hw-media-preview--compact{margin:8px 0}.hw-media-preview__img{max-width:100%;max-height:min(420px,70vh);width:auto;height:auto;border-radius:var(--radius-md);border:1px solid var(--separator);display:block;object-fit:contain;background:var(--bg-elevated)}.hw-media-preview__link-img{display:inline-block}.hw-media-preview__video{max-width:100%;max-height:min(420px,70vh);border-radius:var(--radius-md);background:#111}.hw-media-preview__pdf{width:100%;height:min(520px,75vh);border:1px solid var(--separator);border-radius:var(--radius-md);background:var(--bg-elevated)}.hw-media-preview--compact .hw-media-preview__img,.hw-media-preview--compact .hw-media-preview__video{max-height:200px}.hw-media-preview--compact .hw-media-preview__pdf{height:280px}.hw-attachment-row{list-style:none;margin:0 0 16px;padding:0 0 16px;border-bottom:1px solid var(--separator)}.hw-attachment-row:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.hw-dropzone{margin-top:8px;padding:14px;border:1px dashed var(--separator);border-radius:var(--radius-md);background:var(--bg-elevated)}.hw-dropzone--inline{margin-top:0}.hw-dropzone--compact{padding:10px}.hw-dropzone__hint{margin:0 0 10px;font-size:13px}.hw-btn-clear{background:none;border:none;padding:0;margin:0 0 0 8px;font:inherit;font-size:13px;color:var(--accent);cursor:pointer;text-decoration:underline}.hw-list-row{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:10px 16px}.hw-single-block{list-style:none;margin:0 0 14px;padding:0;position:relative;border-radius:var(--radius-lg);background:var(--bg-elevated);box-shadow:var(--shadow-card);border:1px solid var(--separator);overflow:hidden}.hw-single-block:last-child{margin-bottom:0}.hw-single-block:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,#636366,#aeaeb2);opacity:.9;border-radius:var(--radius-lg) 0 0 var(--radius-lg)}.hw-single-block__body{padding:14px 16px 14px 20px}.hw-single-block__eyebrow{display:block;font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--text-tertiary);margin-bottom:6px}.hw-single-block__row{align-items:center}.hw-single-block__link{font-weight:600;font-size:16px;letter-spacing:-.01em;line-height:1.3;color:var(--text);text-decoration:none;flex:1 1 180px}.hw-single-block__link:hover{color:var(--accent);text-decoration:none}.hw-single-block__lesson{margin:12px 0 0;font-size:14px;color:var(--text-secondary);line-height:1.45;display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 10px}.hw-single-block__lesson-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-tertiary)}.hw-list-row--tight{align-items:center}.hw-list-badges{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.hw-status-badge{font-size:12px;font-weight:500;padding:2px 8px;border-radius:999px;border:1px solid var(--separator);background:var(--bg-elevated);color:var(--label);white-space:nowrap}.hw-status-badge--no_answer{opacity:.85}.hw-status-badge--pending{border-color:#ff950080;background:#ff95001f}.hw-status-badge--completed{border-color:#34c75973;background:#34c7591f}.hw-status-badge--not_completed{border-color:#ff3b3059;background:#ff3b3014}.hw-status-badge--revision_required{border-color:#007aff66;background:#007aff1a}.hw-reviewed-pill{font-size:12px;padding:2px 8px;border-radius:999px;background:#34c75926;color:#1a7f3e;white-space:nowrap}.hw-not-reviewed-pill{font-size:12px;padding:2px 8px;border-radius:999px;background:#8e8e9326;color:var(--label-secondary);white-space:nowrap}.hw-batch-block{list-style:none;margin:0 0 18px;padding:0;position:relative;border-radius:var(--radius-lg);background:var(--bg-elevated);box-shadow:var(--shadow-card);border:1px solid var(--separator);overflow:hidden}.hw-batch-block:last-child{margin-bottom:0}.hw-batch-block:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:linear-gradient(180deg,var(--accent) 0%,#5ac8fa 100%);border-radius:var(--radius-lg) 0 0 var(--radius-lg)}.hw-batch-block__body{padding:18px 20px 18px 24px}.hw-batch-block__eyebrow{display:block;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--text-tertiary);margin-bottom:8px}.hw-batch-block__head{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:12px 16px}.hw-batch-block__title{margin:0;font-size:18px;font-weight:600;letter-spacing:-.02em;line-height:1.25;color:var(--text);flex:1 1 200px}.hw-batch-block__count-pill{flex-shrink:0;font-size:13px;font-weight:600;padding:6px 12px;border-radius:999px;background:#0071e31a;color:var(--accent);border:1px solid rgba(0,113,227,.2)}.hw-batch-block__lesson{margin:12px 0 0;font-size:14px;color:var(--text-secondary);line-height:1.45;display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 10px}.hw-batch-block__lesson-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-tertiary)}.hw-batch-pills{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 4px}.hw-batch-pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;padding:5px 11px;border-radius:999px;border:1px solid var(--separator);background:#3c3c430a;color:var(--text-secondary)}.hw-batch-pill__n{font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}.hw-batch-pill--neutral{border-color:#3c3c4326;background:#3c3c430f}.hw-batch-pill--warning{border-color:#ff950073;background:#ff95001a;color:#b45309}.hw-batch-pill--warning .hw-batch-pill__n{color:#92400e}.hw-batch-pill--success{border-color:#34c75973;background:#34c7591c;color:#1a7f3e}.hw-batch-pill--success .hw-batch-pill__n{color:#166534}.hw-batch-pill--danger{border-color:#ff3b3059;background:#ff3b3014;color:#b91c1c}.hw-batch-pill--danger .hw-batch-pill__n{color:#991b1b}.hw-batch-pill--info{border-color:#007aff59;background:#007aff1a;color:#1d4ed8}.hw-batch-pill--info .hw-batch-pill__n{color:#1e40af}.hw-batch-block__list{margin:16px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}.hw-batch-student{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 14px;padding:12px 14px;border-radius:var(--radius-md);background:#00000006;border:1px solid rgba(60,60,67,.08);transition:border-color .15s ease,background .15s ease}.hw-batch-student:hover{background:#0071e30a;border-color:#0071e32e}.hw-batch-student__link{font-weight:600;font-size:15px;color:var(--text);text-decoration:none}.hw-batch-student__link:hover{color:var(--accent);text-decoration:none}.hw-batch-student__badges{flex-shrink:0}@media(prefers-color-scheme:dark){.hw-batch-student{background:#ffffff0a;border-color:#ffffff14}.hw-batch-student:hover{background:#0071e31f;border-color:#5ac8fa59}.hw-batch-pill--warning{color:#fdba74}.hw-batch-pill--warning .hw-batch-pill__n{color:#fed7aa}.hw-batch-pill--success{color:#86efac}.hw-batch-pill--success .hw-batch-pill__n{color:#bbf7d0}.hw-batch-pill--danger{color:#fca5a5}.hw-batch-pill--danger .hw-batch-pill__n{color:#fecaca}.hw-batch-pill--info{color:#93c5fd}.hw-batch-pill--info .hw-batch-pill__n{color:#bfdbfe}}