: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{min-height:100vh;display:grid;align-content:start;grid-gap:16px;gap:16px;background:#f5f7fb;color:#111827;padding:24px}.viewer-header{display:flex;align-items:end;justify-content:space-between;gap:18px;border-bottom:1px solid rgba(17,24,39,.12);padding-bottom:18px}.viewer-header__main{display:grid;grid-gap:8px;gap:8px}.viewer-brand{color:#4b5563;font-size:12px;font-weight:800;letter-spacing:.08em;line-height:1;text-transform:uppercase}.viewer-header 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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 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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-page{width:min(1320px,100%);display:grid;align-content:start;grid-gap:16px;gap:16px}.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-table-wrap{display:grid;grid-gap:14px;gap:14px}.schedule-building{display:grid;grid-gap:8px;gap:8px}.schedule-building__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 2px}.schedule-building__head h2{margin:0;color:var(--text);font-size:17px;line-height:1.2;letter-spacing:0}.schedule-building__head span{color:var(--muted-soft);font-size:12px;line-height:1.2}.schedule-table{overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:var(--panel)}.schedule-table__head,.schedule-table__row{min-width:960px;display:grid;grid-template-columns:92px minmax(104px,.9fr) minmax(220px,1.6fr) minmax(180px,1.2fr) 120px 112px;align-items:center}.schedule-table__head{min-height:38px;border-bottom:1px solid var(--line);background:var(--panel-strong);color:var(--muted-soft);font-size:11px;font-weight:700;letter-spacing:.08em;line-height:1;text-transform:uppercase}.schedule-table__head>div,.schedule-table__row>div{min-width:0;padding:9px 11px}.schedule-table__row{width:100%;min-height:50px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--muted);font:inherit;font-size:13px;line-height:1.3;text-align:left}.schedule-table__row:last-child{border-bottom:0}.schedule-table__row:disabled{cursor:default}.schedule-table__row>div{overflow-wrap:anywhere}.schedule-table__row--editable{cursor:pointer;transition:background-color .14s ease,color .14s ease}.schedule-table__row--editable:hover{background:rgba(79,127,216,.09);color:var(--text)}.schedule-table__row--problem{background:rgba(218,88,88,.055)}.schedule-table__room{color:var(--text);font-weight:700}.schedule-table__room,.schedule-table__teacher{display:flex;flex-wrap:wrap;align-items:center;gap:6px}.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-table__row:nth-child(2n){background:rgba(255,255,255,.016)}.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 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