:root{--bg:#0f1217;--panel:#151a21;--panel-strong:#11161d;--line:rgba(255,255,255,0.08);--line-strong:rgba(255,255,255,0.13);--text:#eef2f6;--muted:rgba(238,242,246,0.58);--muted-soft:rgba(238,242,246,0.42);--accent:#4f7fd8;--accent-soft:rgba(79,127,216,0.16);--sidebar-width:280px}*{box-sizing:border-box}body,html{min-height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button{font:inherit}.viewer-shell{--v-bg:#f5f7fb;--v-surface:#ffffff;--v-surface-2:#f3f4f6;--v-border:#c7ced9;--v-text:#111827;--v-muted:#6b7280;--v-accent:#4f7fd8;--v-accent-soft:#eef4ff;--v-today:#16a34a;min-height:100vh;background:var(--v-bg);color:var(--v-text);padding:24px 16px}.viewer-shell[data-theme=dark]{--v-bg:#0f1217;--v-surface:#151a21;--v-surface-2:#1b222c;--v-border:rgba(255,255,255,0.1);--v-text:#eef2f6;--v-muted:rgba(238,242,246,0.6);--v-accent:#6f9bec;--v-accent-soft:rgba(79,127,216,0.16);--v-today:#34d399}.viewer-inner{width:min(720px,100%);margin:0 auto;display:flex;flex-direction:column;gap:16px}.viewer-topbar{display:flex;justify-content:flex-end}.viewer-theme{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--v-border);border-radius:10px;background:var(--v-surface);color:var(--v-text);cursor:pointer}.viewer-combobox{position:relative;width:100%}.viewer-search{width:100%;min-height:46px;display:flex;align-items:center;gap:10px;border:1px solid var(--v-border);border-radius:12px;background:var(--v-surface);color:var(--v-muted);padding:0 14px}.viewer-search input{width:100%;min-width:0;border:0;outline:0;background:transparent;color:var(--v-text);font-size:15px}.viewer-suggestions{position:absolute;z-index:20;top:calc(100% + 6px);left:0;right:0;margin:0;padding:4px;list-style:none;max-height:340px;overflow-y:auto;border:1px solid var(--v-border);border-radius:12px;background:var(--v-surface);box-shadow:0 12px 28px rgba(17,24,39,.18)}.viewer-suggestion{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;cursor:pointer;color:var(--v-text)}.viewer-suggestion--active{background:var(--v-surface-2)}.viewer-suggestion__icon{flex-shrink:0;color:var(--v-muted)}.viewer-suggestion__name{flex:1 1;min-width:0;font-size:14px;font-weight:620;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.viewer-suggestion__badge{flex-shrink:0;font-size:12px;font-weight:640;color:var(--v-muted)}.viewer-status{color:var(--v-muted);font-size:14px;line-height:1.4}.viewer-empty{border:1px dashed var(--v-border);border-radius:12px;background:var(--v-surface);color:var(--v-muted);padding:28px 20px;text-align:center;font-size:15px}.viewer-week-view{display:flex;flex-direction:column;gap:14px;scroll-margin-top:12px}.viewer-tabs{display:grid;grid-template-columns:repeat(6,1fr);grid-gap:6px;gap:6px}.viewer-tab{display:grid;grid-gap:2px;gap:2px;justify-items:center;align-content:center;min-height:52px;min-width:0;padding:6px 2px;border:1px solid var(--v-border);border-radius:12px;background:var(--v-surface);color:var(--v-muted);cursor:pointer}.viewer-tab strong{font-size:14px;font-weight:760;line-height:1;color:var(--v-text)}.viewer-tab__date{font-size:11px;line-height:1;color:var(--v-muted);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.viewer-tab--today{position:relative}.viewer-tab--today strong{color:var(--v-today)}.viewer-tab--today:after{content:"";position:absolute;top:6px;right:6px;width:6px;height:6px;border-radius:50%;background:var(--v-today)}.viewer-tab--active{border-color:var(--v-accent);background:var(--v-accent-soft)}.viewer-tab--active strong{color:var(--v-accent)}.viewer-day{display:flex;flex-direction:column;gap:10px}.viewer-day__head{color:var(--v-muted);font-size:13px;font-weight:740}.viewer-day-empty{border:1px dashed var(--v-border);border-radius:12px;background:var(--v-surface);color:var(--v-muted);padding:20px;text-align:center;font-size:14px}.viewer-lesson{display:flex;flex-direction:column;gap:6px;border:1px solid var(--v-border);border-left:3px solid var(--v-accent);border-radius:12px;background:var(--v-surface);padding:12px 14px}.viewer-lesson__top{display:flex;align-items:baseline;justify-content:space-between;gap:10px}.viewer-lesson__pair{font-size:12px;font-weight:740;color:var(--v-muted)}.viewer-lesson__time{font-size:13px;font-weight:780;color:var(--v-text);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.viewer-lesson__subject{font-size:16px;font-weight:720;line-height:1.3;color:var(--v-text);overflow-wrap:anywhere}.viewer-lesson__meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;color:var(--v-muted);font-size:13px}.viewer-lesson__meta span{display:inline-flex;align-items:center;overflow-wrap:anywhere}.viewer-lesson__meta span:not(:first-child):before{content:"·";margin-right:8px;color:var(--v-muted)}.viewer-skeleton{display:flex;flex-direction:column;gap:10px}.viewer-skeleton__card{height:82px;border-radius:12px;background:linear-gradient(90deg,var(--v-surface-2) 0,var(--v-surface) 48%,var(--v-surface-2) 100%);background-size:220% 100%;animation:viewer-loading 1.2s ease-in-out infinite}@keyframes viewer-loading{0%{background-position:120% 0}to{background-position:-120% 0}}@media (max-width:767px){.viewer-shell{padding:16px 12px}.viewer-tab strong{font-size:13px}.viewer-tab{padding:6px 1px}.viewer-tab__date{font-size:10px;letter-spacing:-.2px}}@media (max-width:360px){.viewer-tab__date{display:none}}.auth-shell{min-height:100vh;display:grid;place-items:center;background:var(--bg);padding:20px}.auth-card{width:min(380px,100%);border:1px solid var(--line);border-radius:10px;background:var(--panel);display:grid;grid-gap:14px;gap:14px;padding:18px}.auth-card__eyebrow{color:var(--muted-soft);font-size:11px;font-weight:650;letter-spacing:.08em;line-height:1;text-transform:uppercase}.auth-card h1{margin:0;color:var(--text);font-size:28px;line-height:1.15;letter-spacing:0}.auth-loader{color:var(--muted);font-size:14px;line-height:1.4}.app-shell{min-height:100vh;display:grid;grid-template-columns:var(--sidebar-width) minmax(0,1fr);background:var(--bg)}.sidebar{min-height:100vh;border-right:1px solid var(--line);background:var(--panel-strong);display:flex;flex-direction:column;gap:22px;padding:18px 14px}.sidebar__brand{min-height:48px;display:flex;align-items:center;gap:12px;padding:0 8px 16px;border-bottom:1px solid var(--line)}.sidebar__mark{width:34px;height:34px;border-radius:8px;display:grid;place-items:center;background:var(--accent);color:white;font-size:15px;font-weight:700}.sidebar__title{color:var(--text);font-size:15px;font-weight:650;line-height:1.2}.sidebar__caption{margin-top:3px;color:var(--muted-soft);font-size:12px;line-height:1.2}.role-switch{display:grid;grid-template-columns:1fr 1fr;grid-gap:4px;gap:4px;border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.025);padding:4px}.role-switch__button{min-height:30px;border:0;border-radius:6px;background:transparent;color:var(--muted);font-size:12px;font-weight:650;cursor:pointer;transition:background-color .14s ease,color .14s ease}.role-switch__button:hover{color:var(--text)}.role-switch__button--active{background:var(--accent-soft);color:var(--text)}.sidebar__session{border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.025);display:grid;grid-gap:10px;gap:10px;padding:10px}.sidebar__session-role{color:var(--text);font-size:12px;font-weight:700;line-height:1.2}.sidebar__session-login{margin-top:3px;min-width:0;overflow:hidden;text-overflow:ellipsis;color:var(--muted-soft);font-size:12px;line-height:1.2;white-space:nowrap}.sidebar__logout{min-height:32px;border:1px solid var(--line-strong);border-radius:7px;background:transparent;color:var(--muted);font-size:12px;font-weight:650;cursor:pointer;transition:background-color .14s ease,border-color .14s ease,color .14s ease}.sidebar__logout:hover{border-color:rgba(238,242,246,.28);background:rgba(255,255,255,.045);color:var(--text)}.sidebar__nav{display:grid;grid-gap:20px;gap:20px}.nav-group{display:grid;grid-gap:8px;gap:8px}.nav-group__title{padding:0 8px;color:var(--muted-soft);font-size:11px;font-weight:650;letter-spacing:.08em;line-height:1;text-transform:uppercase}.nav-group__items{display:grid;grid-gap:4px;gap:4px}.nav-item{width:100%;min-height:40px;display:grid;grid-template-columns:22px minmax(0,1fr);align-items:center;grid-gap:10px;gap:10px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--muted);padding:0 9px;text-align:left;cursor:pointer;transition:background-color .14s ease,border-color .14s ease,color .14s ease}.nav-item:hover{border-color:var(--line-strong);background:rgba(255,255,255,.04);color:var(--text)}.nav-item__icon{color:currentColor}.nav-item span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.nav-item--active{border-color:rgba(79,127,216,.38);background:var(--accent-soft);color:var(--text)}.nav-group__subitems{display:grid;grid-gap:2px;gap:2px;margin:2px 0 0 14px;padding-left:8px;border-left:1px solid var(--line)}.nav-item--child{min-height:32px;grid-template-columns:minmax(0,1fr)}.nav-item--child span{font-size:12px}.workspace{min-width:0;min-height:100vh;background:var(--bg);display:grid;place-items:stretch;align-content:start;padding:24px}.workspace>*{width:min(1280px,100%);display:grid;align-content:start;grid-gap:18px;gap:18px}.import-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}.import-head h1{margin:0;color:var(--text);font-size:28px;line-height:1.15;letter-spacing:0}.import-head p{max-width:540px;margin:8px 0 0;color:var(--muted);font-size:14px;line-height:1.45}.import-panel{border:1px solid var(--line);border-radius:10px;background:var(--panel);padding:16px;display:grid;grid-gap:14px;gap:14px}.import-file-input{display:none}.import-dropzone{min-height:178px;border:1px dashed rgba(238,242,246,.26);border-radius:10px;background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.012)),var(--panel-strong);color:var(--text);display:grid;align-content:center;justify-items:center;grid-gap:8px;gap:8px;padding:24px;text-align:center;cursor:pointer;transition:border-color .14s ease,background-color .14s ease,transform .14s ease}.import-dropzone:hover{border-color:rgba(79,127,216,.58);background-color:rgba(79,127,216,.08)}.import-dropzone:active{transform:translateY(1px)}.import-dropzone strong{font-size:17px;line-height:1.2;letter-spacing:0}.import-dropzone span{max-width:360px;color:var(--muted);font-size:13px;line-height:1.4}.import-actions{display:flex;flex-wrap:wrap;gap:10px}.import-button{min-height:40px;border:1px solid var(--line-strong);border-radius:8px;background:rgba(255,255,255,.045);color:var(--text);padding:0 14px;font-size:13px;font-weight:650;cursor:pointer;transition:background-color .14s ease,border-color .14s ease,color .14s ease}.import-button:hover:not(:disabled){border-color:rgba(238,242,246,.28);background:rgba(255,255,255,.075)}.import-button--primary{border-color:rgba(79,127,216,.68);background:var(--accent);color:white}.import-button--primary:hover:not(:disabled){border-color:rgba(112,155,232,.9);background:#5d8ce3}.import-button:disabled{cursor:not-allowed;opacity:.46}.import-status{min-height:38px;border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.025);color:var(--muted);display:flex;align-items:center;padding:0 12px;font-size:13px;line-height:1.35}.import-meta{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:12px;gap:12px}.import-card{min-height:174px;border:1px solid var(--line);border-radius:8px;background:rgba(17,22,29,.72);padding:14px;display:grid;align-content:start;grid-gap:10px;gap:10px}.import-card__label{color:var(--muted-soft);font-size:11px;font-weight:650;letter-spacing:.08em;line-height:1;text-transform:uppercase}.import-card__value{min-width:0;overflow-wrap:anywhere;color:var(--text);font-size:17px;font-weight:650;line-height:1.25}.import-card__hint{color:var(--muted);font-size:13px;line-height:1.4}.import-summary{display:grid;grid-gap:8px;gap:8px}.import-summary__row{min-height:24px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;grid-gap:12px;gap:12px;color:var(--muted);font-size:13px;line-height:1.25}.import-summary__row span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.import-summary__row strong{color:var(--text);font-size:13px;font-weight:700}.schedule-sticky{position:-webkit-sticky;position:sticky;top:0;z-index:40;display:grid;grid-gap:10px;gap:10px;background:rgba(15,18,23,.96);padding-bottom:10px;box-shadow:0 12px 24px rgba(15,18,23,.72)}.schedule-toolbar{display:grid;grid-template-columns:minmax(180px,260px) minmax(320px,1fr);align-items:end;grid-gap:12px;gap:12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);padding:14px}.lesson-switch{min-height:40px;display:grid;grid-template-columns:repeat(7,minmax(34px,1fr));grid-gap:4px;gap:4px;border:1px solid var(--line-strong);border-radius:8px;background:var(--panel-strong);padding:4px}.lesson-switch__button{min-width:0;min-height:30px;border:0;border-radius:6px;background:transparent;color:var(--muted);font-size:13px;font-weight:700;cursor:pointer;transition:background-color .14s ease,color .14s ease}.lesson-switch__button:hover{color:var(--text)}.lesson-switch__button--active{background:var(--accent);color:white}.schedule-status{min-height:38px;border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.025);color:var(--muted);display:flex;align-items:center;padding:0 12px;font-size:13px;line-height:1.35}.schedule-sheet-layout{display:grid;grid-template-columns:minmax(0,1fr) 264px;align-items:start;grid-gap:12px;gap:12px}.schedule-sheet-wrap{overflow:auto;max-height:calc(100vh - 220px);border:1px solid var(--line-strong);border-radius:8px;background:var(--panel)}.xl-grid{min-width:820px;width:100%;border-collapse:separate;border-spacing:0;color:var(--muted);font-size:13px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;line-height:1.25;table-layout:fixed}.xl-grid td,.xl-grid th{overflow:hidden;border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:5px 9px;text-align:left;text-overflow:ellipsis;vertical-align:middle;white-space:nowrap}.xl-grid td:last-child,.xl-grid th:last-child{border-right:0}.xl-grid thead th{position:-webkit-sticky;position:sticky;top:0;z-index:3;height:30px;border-bottom:1px solid var(--line-strong);background:var(--panel-strong);color:var(--muted-soft);font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.xl-grid thead th:first-child{left:0;z-index:4}.xl-grid col,.xl-grid tbody th,.xl-grid thead th:first-child{width:108px}.xl-grid__group th{position:-webkit-sticky;position:sticky;top:30px;z-index:2;display:table-cell;height:26px;border-bottom:1px solid var(--line-strong);background:var(--panel-strong);color:var(--text);font-size:12px;font-weight:700}.xl-grid__group-count{color:var(--muted-soft);font-weight:500;margin-left:8px}.xl-grid__row{height:30px}.xl-grid__row:nth-child(2n){background:rgba(255,255,255,.016)}.xl-grid__row:hover{background:rgba(79,127,216,.07)}.xl-grid__row--problem{background:rgba(218,88,88,.055)}.xl-grid__row--drop{outline:2px solid var(--accent);outline-offset:-2px}.xl-grid tbody th{position:-webkit-sticky;position:sticky;left:0;z-index:1;background:var(--panel);color:var(--text);font-weight:700}.xl-grid__row:nth-child(2n) th{background:#171c23}.xl-grid__row--problem th{background:#1e171a}.xl-grid__cell{cursor:cell}.xl-grid__cell:focus{outline:none}.xl-grid__cell--selected{box-shadow:inset 0 0 0 2px var(--accent);color:var(--text)}.xl-grid .schedule-pill{min-width:0;min-height:18px;border-radius:4px;padding:0 6px;font-size:11px;font-weight:600}.xl-grid__room{margin-right:6px}.schedule-clipboard{position:-webkit-sticky;position:sticky;top:0;display:grid;align-content:start;grid-gap:8px;gap:8px;max-height:calc(100vh - 220px);border:1px dashed var(--line-strong);border-radius:8px;background:var(--panel);padding:10px}.schedule-clipboard--drop{border-color:var(--accent);border-style:solid;background:var(--accent-soft)}.schedule-clipboard__head{display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--muted-soft);font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.schedule-clipboard__list{overflow-y:auto;display:grid;grid-gap:6px;gap:6px;margin:0;padding:0;list-style:none}.schedule-clipboard__item{display:flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:6px;background:var(--panel-strong);padding:6px 8px;cursor:-webkit-grab;cursor:grab}.schedule-clipboard__item:active{cursor:-webkit-grabbing;cursor:grabbing}.schedule-clipboard__item-body{min-width:0;display:grid;grid-gap:2px;gap:2px}.schedule-clipboard__item-body strong{overflow:hidden;color:var(--text);font-size:12px;font-weight:650;line-height:1.25;text-overflow:ellipsis;white-space:nowrap}.schedule-clipboard__item-body span{color:var(--muted-soft);font-size:11px;line-height:1.2}.schedule-clipboard__remove{flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:5px;background:transparent;color:var(--muted-soft);padding:4px;cursor:pointer}.schedule-clipboard__remove:hover{color:#f0a0a0}.schedule-clipboard__empty{margin:0;color:var(--muted-soft);font-size:12px;line-height:1.35}.schedule-reason-badge{min-height:20px;max-width:100%;border:1px solid rgba(218,88,88,.36);border-radius:999px;background:rgba(218,88,88,.1);color:#f0a0a0;padding:3px 7px;font-size:10px;font-weight:800;white-space:normal}.schedule-pill,.schedule-reason-badge{display:inline-flex;align-items:center;line-height:1.2}.schedule-pill{min-width:84px;min-height:26px;justify-content:center;border:1px solid var(--line-strong);border-radius:999px;padding:0 9px;font-size:12px;font-weight:650;text-align:center;white-space:nowrap}.schedule-pill--busy{border-color:rgba(79,127,216,.42);background:var(--accent-soft);color:var(--text)}.schedule-pill--free{background:rgba(255,255,255,.025);color:var(--muted-soft)}.schedule-edit{position:relative;z-index:51;width:min(760px,calc(100vw - 32px));border:1px solid var(--line);border-radius:10px;background:var(--panel);box-shadow:0 24px 80px rgba(0,0,0,.44);max-height:calc(100vh - 32px);overflow-y:auto;display:grid;grid-gap:12px;gap:12px;padding:16px}.schedule-edit__title{color:var(--text);font-size:15px;font-weight:700;line-height:1.2}.schedule-edit__section{display:grid;grid-gap:10px;gap:10px;border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.022);padding:12px}.schedule-edit__section-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.schedule-edit__section-head span{color:var(--muted-soft);font-size:11px;font-weight:750;letter-spacing:.08em;line-height:1;text-transform:uppercase}.schedule-edit__snapshot{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:8px;gap:8px}.schedule-edit__row{min-width:0;display:grid;grid-gap:5px;gap:5px;border:1px solid var(--line);border-radius:7px;background:rgba(255,255,255,.018);padding:9px 10px}.schedule-edit__row span{color:var(--muted-soft);font-size:10px;font-weight:700;letter-spacing:.06em;line-height:1;text-transform:uppercase}.schedule-edit__row 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