:root{--kv-color-brand-default: #1f4299;--kv-color-brand-hover: #123a96;--kv-color-brand-active: #002583;--kv-color-brand-subtle: #e8eeff;--kv-color-brand-onBrand: #ffffff;--kv-color-surface-base: #f8f7f4;--kv-color-surface-raised: #ffffff;--kv-color-surface-sunken: #f0eee9;--kv-color-surface-overlay: rgba(26, 25, 23, .45);--kv-color-content-primary: #1a1917;--kv-color-content-secondary: #5c5850;--kv-color-content-tertiary: #7d786b;--kv-color-content-onAccent: #1a1917;--kv-color-content-inverse: #ffffff;--kv-color-border-subtle: #e4e1d9;--kv-color-border-default: #d2cec3;--kv-color-border-strong: #a8a396;--kv-color-border-focus: #2851ac;--kv-color-accent-default: #ffb800;--kv-color-accent-subtle: #fff4cc;--kv-color-accent-onAccent: #1a1917;--kv-color-success-default: #3a7d42;--kv-color-success-subtle: #eef6ee;--kv-color-success-content: #2f6435;--kv-color-warning-default: #e0a200;--kv-color-warning-subtle: #fff4cc;--kv-color-warning-content: #b88200;--kv-color-danger-default: #c0392b;--kv-color-danger-hover: #9d2c20;--kv-color-danger-subtle: #fbeeee;--kv-color-danger-content: #7d221a;--kv-color-danger-onDanger: #ffffff;--kv-elevation-none: none;--kv-elevation-sm: 0 1px 2px rgba(26,25,23,.06), 0 1px 1px rgba(26,25,23,.04);--kv-elevation-md: 0 2px 8px rgba(26,25,23,.08), 0 1px 3px rgba(26,25,23,.06);--kv-elevation-lg: 0 8px 24px rgba(26,25,23,.12), 0 2px 6px rgba(26,25,23,.08);--kv-elevation-xl: 0 16px 48px rgba(26,25,23,.16), 0 4px 12px rgba(26,25,23,.1)}[data-theme=dark]{--kv-color-brand-default: #4a6bd0;--kv-color-brand-hover: #7391e3;--kv-color-brand-active: #a6bbf0;--kv-color-brand-subtle: #001443;--kv-color-brand-onBrand: #0f0e0d;--kv-color-surface-base: #0f0e0d;--kv-color-surface-raised: #1a1917;--kv-color-surface-sunken: #2a2824;--kv-color-surface-overlay: rgba(0, 0, 0, .6);--kv-color-content-primary: #f8f7f4;--kv-color-content-secondary: #d2cec3;--kv-color-content-tertiary: #a8a396;--kv-color-content-onAccent: #0f0e0d;--kv-color-content-inverse: 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6px);background:var(--kv-color-surface-base);color:var(--kv-color-content-primary)}.kv-cmdk__input:focus-visible{outline:2px solid var(--kv-color-border-focus);outline-offset:1px}.kv-cmdk__list{list-style:none;margin:0;padding:0;max-height:320px;overflow-y:auto}.kv-cmdk__option{padding:10px 12px;border-radius:var(--kv-radius-md, 6px);cursor:pointer;color:var(--kv-color-content-secondary)}.kv-cmdk__option--active{background:var(--kv-color-brand-subtle);color:var(--kv-color-brand-default)}.kv-cmdk__empty{padding:16px 12px;color:var(--kv-color-content-tertiary);text-align:center}.kv-sidebar__brand{display:flex;align-items:center;gap:8px}.kv-sidebar__brandmark{width:1.4em;height:1.4em;flex:0 0 auto}.kvr-root{--kvr-bg: var(--kv-color-surface-sunken, #0b0f14);--kvr-panel: var(--kv-color-surface-raised, #161b22);--kvr-border: var(--kv-color-border-default, #2b323b);--kvr-fg: var(--kv-color-content-primary, #e6edf3);--kvr-fg-2: var(--kv-color-content-secondary, #9aa7b4);--kvr-accent: var(--kv-color-brand-default, #3b82f6);--kvr-danger: var(--kv-color-danger-default, #e5484d);--kvr-ok: var(--kv-color-success-default, #30a46c);--kvr-hand: var(--kv-color-warning-default, #e0a200);--kvr-hand-subtle: rgba(224, 162, 0, .14);--kvr-accent-subtle: var(--kv-color-brand-subtle, rgba(31, 66, 153, .16));position:fixed;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;background:var(--kvr-bg);color:var(--kvr-fg);font-family:inherit}.kvr-preflight{margin:auto;width:min(720px,100%);padding:24px;display:flex;flex-direction:column;gap:20px}.kvr-preflight__head h1{font-size:1.375rem;margin:0 0 4px}.kvr-preflight__head p{margin:0;color:var(--kvr-fg-2)}.kvr-preview{position:relative;aspect-ratio:16 / 9;width:100%;border-radius:12px;overflow:hidden;background:#000;border:1px solid var(--kvr-border)}.kvr-preview video{width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}.kvr-preview__off{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;color:var(--kvr-fg-2)}.kvr-meter{height:8px;border-radius:999px;background:var(--kvr-border);overflow:hidden}.kvr-meter__fill{height:100%;background:var(--kvr-ok);transition:width 80ms linear}.kvr-devices{display:grid;gap:12px}.kvr-device{display:grid;gap:6px}.kvr-device__label{font-size:.8125rem;color:var(--kvr-fg-2)}.kvr-select{width:100%;padding:10px 12px;border-radius:8px;background:var(--kvr-panel);color:var(--kvr-fg);border:1px solid var(--kvr-border);font:inherit}.kvr-select:focus-visible{outline:2px solid var(--kv-color-border-focus, #58a6ff);outline-offset:1px}.kvr-reco{padding:12px 14px;border-radius:8px;border:1px solid var(--kvr-border);background:var(--kvr-panel);color:var(--kvr-fg-2);font-size:.9375rem}.kvr-reco[data-tone=weak]{border-color:var(--kv-color-warning-default, #d29922);color:var(--kvr-fg)}.kvr-preflight__actions{display:flex;gap:12px;flex-wrap:wrap}.kvr-stage{flex:1;min-height:0;display:grid;gap:8px;padding:8px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));align-content:center}.kvr-tile{position:relative;aspect-ratio:16 / 9;border-radius:10px;overflow:hidden;background:#000;border:1px solid var(--kvr-border)}.kvr-tile video{width:100%;height:100%;object-fit:cover}.kvr-tile[data-self=true] video{transform:scaleX(-1)}.kvr-tile__name{position:absolute;left:8px;bottom:8px;padding:2px 8px;border-radius:6px;font-size:.8125rem;background:#0000008c;color:#fff}.kvr-tile__off{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;color:var(--kvr-fg-2);font-size:1.5rem}.kvr-controls{display:flex;justify-content:center;gap:12px;padding:14px;background:var(--kvr-panel);border-top:1px solid var(--kvr-border)}.kvr-empty{grid-column:1 / -1;text-align:center;color:var(--kvr-fg-2)}.kvr-state{margin:auto;max-width:460px;padding:32px;text-align:center;display:flex;flex-direction:column;gap:12px;align-items:center}.kvr-state h2{margin:0;font-size:1.25rem}.kvr-state p{margin:0;color:var(--kvr-fg-2)}.kvr-state__actions{display:flex;gap:12px;margin-top:8px}.kvr-spinner{width:34px;height:34px;border-radius:50%;border:3px solid var(--kvr-border);border-top-color:var(--kvr-accent);animation:kvr-spin .8s linear infinite}@keyframes kvr-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.kvr-spinner{animation-duration:2s}}.kvr-tile__off:before{content:"";width:44px;height:44px;border-radius:50%;background:var(--kvr-border)}.kvr-visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.kvr-body{flex:1;min-height:0;display:flex;gap:0}.kvr-main{flex:1;min-width:0;display:flex;flex-direction:column}.kvr-stage{flex:1;min-height:0;display:grid;gap:8px;padding:8px;align-content:center;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.kvr-stage[data-count="1"]{grid-template-columns:minmax(0,1fr);place-items:center}.kvr-stage[data-count="2"],.kvr-stage[data-count="3"],.kvr-stage[data-count="4"]{grid-template-columns:repeat(2,1fr)}.kvr-stage[data-count="5"],.kvr-stage[data-count="6"],.kvr-stage[data-count="7"],.kvr-stage[data-count="8"],.kvr-stage[data-count="9"]{grid-template-columns:repeat(3,1fr)}.kvr-focus{flex:1;min-height:0;padding:8px 8px 0;display:grid}.kvr-focus .kvr-tile{aspect-ratio:auto;height:100%}.kvr-filmstrip{display:flex;gap:8px;padding:8px;overflow-x:auto;scrollbar-width:thin}.kvr-filmstrip .kvr-tile{flex:0 0 200px}.kvr-tile[data-speaking=true]{outline:3px solid var(--kvr-accent, #1f4299);outline-offset:-3px}.kvr-tile[data-pinned=true]{box-shadow:0 0 0 2px var(--kvr-accent, #1f4299)}.kvr-tile[data-screen=true]{background:#0a0a0a}.kvr-tile__quality{position:absolute;top:8px;right:8px;width:10px;height:10px;border-radius:50%;border:1px solid rgba(0,0,0,.4)}.kvr-tile__quality[data-quality=excellent]{background:#16a34a}.kvr-tile__quality[data-quality=good]{background:#a3c14a}.kvr-tile__quality[data-quality=poor]{background:#f59e0b}.kvr-tile__quality[data-quality=lost]{background:#dc2626}.kvr-tile__pin{position:absolute;top:6px;left:6px;width:28px;height:28px;display:grid;place-items:center;padding:0;background:#00000080;color:#fff;border:none;border-radius:6px;cursor:pointer;opacity:0;transition:opacity .12s ease}.kvr-tile:hover .kvr-tile__pin,.kvr-tile:focus-within .kvr-tile__pin,.kvr-tile[data-pinned=true] .kvr-tile__pin{opacity:1}.kvr-tile__pin:focus-visible{outline:2px solid var(--kvr-accent, #1f4299);opacity:1}.kvr-tile__pinicon{width:12px;height:12px;border:2px solid currentColor;border-radius:2px}.kvr-tile[data-pinned=true] .kvr-tile__pinicon{background:currentColor}.kvr-controls{position:relative}.kvr-settings{position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%);width:min(320px,90vw);padding:12px;background:var(--kvr-panel);border:1px solid var(--kvr-border);border-radius:10px;box-shadow:0 8px 24px #0000004d;display:flex;flex-direction:column;gap:10px}.kvr-settings__row{display:flex;flex-direction:column}.kvr-roster{flex:0 0 280px;min-width:0;display:flex;flex-direction:column;background:var(--kvr-panel);border-left:1px solid var(--kvr-border)}.kvr-roster__head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--kvr-border)}.kvr-roster__title{font-weight:600;color:var(--kvr-fg)}.kvr-roster__list{list-style:none;margin:0;padding:6px;overflow-y:auto}.kvr-roster__row{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;color:var(--kvr-fg)}.kvr-roster__row[data-speaking=true]{background:var(--kvr-accent-subtle, rgba(31,66,153,.12))}.kvr-roster__quality{width:8px;height:8px;border-radius:50%;flex:0 0 auto}.kvr-roster__quality[data-quality=excellent]{background:#16a34a}.kvr-roster__quality[data-quality=good]{background:#a3c14a}.kvr-roster__quality[data-quality=poor]{background:#f59e0b}.kvr-roster__quality[data-quality=lost]{background:#dc2626}.kvr-roster__name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.kvr-roster__hand{flex:0 0 auto}.kvr-roster__role{flex:0 0 auto;font-size:.6875rem;text-transform:uppercase;letter-spacing:.04em;padding:2px 6px;border-radius:4px;background:var(--kvr-border);color:var(--kvr-fg-2)}.kvr-roster__role[data-role=teacher],.kvr-roster__role[data-role=co_teacher]{background:var(--kvr-accent, #1f4299);color:#fff}.kvr-panel{flex:0 0 320px;min-width:0;min-height:0;display:flex;flex-direction:column;background:var(--kvr-panel);border-left:1px solid var(--kvr-border)}.kvr-panel__tabs{display:flex;align-items:center;gap:4px;padding:8px 8px 0;border-bottom:1px solid var(--kvr-border)}.kvr-panel__tab{flex:1;position:relative;cursor:pointer;font:inherit;display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 8px;border:none;background:transparent;color:var(--kvr-fg-2);font-weight:600;font-size:.875rem;border-radius:8px 8px 0 0}.kvr-panel__tab:hover,.kvr-panel__tab[aria-selected=true]{color:var(--kvr-fg)}.kvr-panel__tab[aria-selected=true]:after{content:"";position:absolute;left:10px;right:10px;bottom:-1px;height:2px;background:var(--kvr-accent);border-radius:2px}.kvr-panel__tab:focus-visible{outline:2px solid var(--kvr-accent);outline-offset:-2px}.kvr-panel__count{font-size:.6875rem;font-weight:700;color:var(--kvr-fg-2);background:var(--kvr-border);padding:1px 7px;border-radius:999px}.kvr-panel__badge{min-width:18px;height:18px;padding:0 5px;border-radius:999px;background:var(--kvr-accent);color:#fff;font-size:.6875rem;font-weight:700;display:inline-grid;place-items:center}.kvr-panel__body{flex:1;min-height:0;display:flex}.kvr-roster{flex:1;min-width:0;min-height:0;width:100%;display:flex;flex-direction:column}.kvr-roster__handsbar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:8px 10px 0;padding:8px 10px;border-radius:8px;background:var(--kvr-hand-subtle);color:var(--kvr-fg);font-size:.8125rem;font-weight:600}.kvr-roster__row[data-hand=true]{background:var(--kvr-hand-subtle)}.kvr-roster__hand{color:var(--kvr-hand)}.kvr-chat{flex:1;min-height:0;width:100%;display:flex;flex-direction:column}.kvr-chat__log{flex:1;min-height:0;overflow-y:auto;scrollbar-width:thin;padding:12px;display:flex;flex-direction:column;gap:10px}.kvr-chat__empty{margin:auto;text-align:center;color:var(--kvr-fg-2);font-size:.875rem}.kvr-chat__sys{align-self:center;margin:0;font-size:.75rem;color:var(--kvr-fg-2);background:var(--kvr-bg);padding:3px 10px;border-radius:999px}.kvr-chat__sysicon{color:var(--kvr-hand)}.kvr-chat__msg{display:flex;flex-direction:column;gap:2px;max-width:100%}.kvr-chat__metarow{display:flex;align-items:baseline;gap:8px}.kvr-chat__who{font-size:.8125rem;font-weight:700;color:var(--kvr-fg)}.kvr-chat__who[data-role=teacher],.kvr-chat__who[data-role=co_teacher]{color:var(--kvr-accent)}.kvr-chat__time{font-size:.6875rem;color:var(--kvr-fg-2)}.kvr-chat__text{font-size:.875rem;line-height:1.45;color:var(--kvr-fg);background:var(--kvr-bg);padding:7px 10px;border-radius:4px 10px 10px;align-self:flex-start;max-width:100%;overflow-wrap:anywhere}.kvr-chat__msg[data-self=true] .kvr-chat__text{background:var(--kvr-accent-subtle)}.kvr-chat__composer{display:flex;gap:8px;padding:10px;border-top:1px solid var(--kvr-border)}.kvr-chat__input{flex:1;min-width:0;padding:9px 11px;border-radius:8px;font:inherit;background:var(--kvr-bg);color:var(--kvr-fg);border:1px solid var(--kvr-border)}.kvr-chat__input:focus-visible{outline:2px solid var(--kv-color-border-focus, #58a6ff);outline-offset:1px}.kvr-chat__input:disabled{opacity:.5}.kvr-chat__send{flex:0 0 auto;width:40px;border:none;border-radius:8px;cursor:pointer;background:var(--kvr-accent);color:#fff;font-size:1rem}.kvr-chat__send:disabled{opacity:.45;cursor:default}.kvr-chat__send:focus-visible{outline:2px solid var(--kvr-fg);outline-offset:2px}.kvr-tile[data-hand=true]{outline:2px solid var(--kvr-hand);outline-offset:-2px}.kvr-tile__hand{position:absolute;top:8px;left:8px;display:inline-flex;align-items:center;padding:3px 7px;border-radius:6px;font-size:.8125rem;background:var(--kvr-hand);color:#1b1710}.kvr-ctrl__item{position:relative;display:inline-flex}.kvr-ctrl__badge{position:absolute;top:-6px;right:-6px;min-width:18px;height:18px;padding:0 5px;border-radius:999px;background:var(--kvr-accent);color:#fff;font-size:.6875rem;font-weight:700;display:inline-grid;place-items:center;border:2px solid var(--kvr-panel)}.kvr-ctrl__badge[data-tone=attention]{background:var(--kvr-hand);color:#1b1710}@media(max-width:640px){.kvr-panel{position:absolute;inset:0 0 0 auto;z-index:5;width:min(360px,92vw);box-shadow:-8px 0 24px #0000004d}.kvr-filmstrip .kvr-tile{flex-basis:140px}}.kvr-main[data-board=true]{gap:8px}.kvr-filmstrip--top{flex:0 0 auto;max-height:128px}.kvr-filmstrip--top .kvr-tile{flex:0 0 200px}.kvr-wb{position:relative;min-height:0}.kvr-wb[data-hidden=true]{display:none}.kvr-wb:not([data-hidden=true]){flex:1 1 auto}.kvr-wb .excalidraw{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}.kvr-wb__loading{flex:1;display:grid;place-items:center;color:var(--kvr-fg-2);font-size:.9375rem}.kvr-wb__perm{position:absolute;top:12px;right:12px;z-index:20;cursor:pointer;display:inline-flex;align-items:center;gap:8px;font:inherit;font-size:.8125rem;font-weight:600;color:var(--kvr-fg);padding:7px 12px;border-radius:999px;background:var(--kvr-panel);border:1px solid var(--kvr-border);box-shadow:0 2px 10px #00000040}.kvr-wb__permdot{width:9px;height:9px;border-radius:50%;background:var(--kvr-fg-2)}.kvr-wb__perm[aria-pressed=true] .kvr-wb__permdot{background:var(--kvr-ok)}.kvr-wb__perm:focus-visible{outline:2px solid var(--kvr-accent);outline-offset:2px}