:root{--bg: #f2f6f9;--surface: #ffffff;--surface-sunken: #f2f6fa;--surface-hover: #f5f8fb;--border: #e1e8ee;--border-strong: #c9d6e0;--text: #16222c;--text-secondary: #46586a;--muted: #5b6b78;--text-disabled: #9aa8b4;--accent: #005985;--accent-strong: #00496d;--accent-soft: #d9ecf5;--accent-faint: #ecf5fa;--on-accent: #ffffff;--brand-orange: #f4891e;--brand-cyan: #29b6d1;--ok: #0e7a44;--ok-dot: #18a558;--ok-soft: #d9f3e4;--ok-faint: #ecfaf2;--warn: #b45309;--warn-soft: #fdf1e2;--unsynced: #545f6d;--unsynced-dot: #8a93a0;--unsynced-soft: #eef1f4;--danger: #c92a2a;--danger-strong: #a82222;--danger-dot: #e23d3d;--danger-soft: #fdecec;--danger-faint: #fdf6f6;--conflict: #6d28d9;--conflict-soft: #f0e9fc;--grade-low: var(--danger);--grade-high: var(--ok);--gc-1: #005985;--gc-2: #0b7d95;--gc-3: #0e7a44;--gc-4: #6d28d9;--gc-5: #b45309;--gc-6: #c25e85;--grad-brand: linear-gradient(120deg, #29b6d1 0%, #0a7fae 48%, #005985 100%);--grad-brand-strong: linear-gradient(120deg, #1798b3 0%, #00679a 48%, #00496d 100%);--grad-warm: linear-gradient(120deg, #f4891e 0%, #fbb03b 100%);--gcg-1: linear-gradient(135deg, #29b6d1, #005985);--gcg-2: linear-gradient(135deg, #34d0b6, #0b7d95);--gcg-3: linear-gradient(135deg, #5fc26b, #0e7a44);--gcg-4: linear-gradient(135deg, #a78bfa, #6d28d9);--gcg-5: linear-gradient(135deg, #fbb03b, #d96f0b);--gcg-6: linear-gradient(135deg, #f193b6, #c25e85);--font-sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;--font-display: "Nunito", var(--font-sans);--fs-xs: .75rem;--fs-sm: .8125rem;--fs-base: .9375rem;--fs-md: 1.0625rem;--fs-lg: 1.25rem;--fs-xl: 1.5rem;--radius-xs: 4px;--radius-sm: 6px;--radius: 8px;--radius-lg: 12px;--radius-full: 999px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-7: 32px;--space-8: 48px;--shadow-xs: 0 1px 2px rgba(13, 38, 59, .05);--shadow-sm: 0 1px 3px rgba(13, 38, 59, .07), 0 1px 2px rgba(13, 38, 59, .04);--shadow-md: 0 4px 12px -2px rgba(13, 38, 59, .1), 0 2px 4px rgba(13, 38, 59, .05);--shadow-lg: 0 16px 40px -8px rgba(13, 38, 59, .18), 0 4px 12px rgba(13, 38, 59, .08);--ring: 0 0 0 3px rgba(0, 89, 133, .18);--ring-danger: 0 0 0 3px rgba(201, 42, 42, .15);--ease-out: cubic-bezier(.2, 0, 0, 1);--ease-in: cubic-bezier(.4, 0, 1, 1);--ease-spring: cubic-bezier(.34, 1.3, .36, 1);--dur-fast: .12s;--dur-base: .16s;--dur-slow: .2s;--dur-enter: .24s;--z-sticky-cell: 1;--z-sticky-head: 2;--z-scroll-fade: 4;--z-header: 20;--z-overlay: 50;--primary: var(--accent);--primary-dark: var(--accent-strong);--green: var(--ok-dot);--amber: var(--warn);--red: var(--danger);--shadow: var(--shadow-sm);font-synthesis:none}*{box-sizing:border-box}html,body,#app{height:100%;margin:0}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);font-size:var(--fs-base);line-height:1.5;-webkit-font-smoothing:antialiased}.app{min-height:100%;display:flex;flex-direction:column}.app__main{flex:1;padding:20px;max-width:1280px;width:100%;margin:0 auto}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-strong);text-decoration:underline}.link-btn{background:none;border:0;padding:0;font:inherit;color:var(--accent);cursor:pointer;text-align:left}.link-btn:hover{text-decoration:underline}h1{font-family:var(--font-display);font-weight:800;font-size:var(--fs-lg);letter-spacing:-.01em;margin:0 0 var(--space-4);color:var(--text)}h2{font-family:var(--font-display);font-weight:700;font-size:var(--fs-md);margin:0 0 var(--space-3)}table.journal td,table.journal th,.grade-input,.cal__day,.group-card__metrics b,.stat-chip__value,input[type=date].input,input[type=month].input{font-variant-numeric:tabular-nums}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--border-strong);background:var(--surface);color:var(--text);padding:8px 14px;border-radius:var(--radius);cursor:pointer;font-family:var(--font-sans);font-size:var(--fs-base);font-weight:500;transition:background-color var(--dur-base) var(--ease-out),border-color var(--dur-base) var(--ease-out),color var(--dur-base) var(--ease-out),box-shadow var(--dur-base) var(--ease-out),transform 80ms var(--ease-out)}.btn:hover:not(:disabled){background:var(--surface-hover)}.btn:active:not(:disabled){transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}.btn--primary:hover:not(:disabled){background:var(--accent-strong);border-color:var(--accent-strong)}.btn--danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn--danger:hover:not(:disabled){background:var(--danger-strong);border-color:var(--danger-strong)}.btn--danger-outline{background:var(--surface);border-color:#f0c4c4;color:var(--danger)}.btn--danger-outline:hover:not(:disabled){background:var(--danger-faint);border-color:var(--danger)}.btn--ghost{background:transparent;border-color:transparent}.btn--ghost:hover:not(:disabled){background:var(--surface-hover)}.btn--push-right{margin-left:auto}a.btn:hover{text-decoration:none}.btn--busy{position:relative;color:transparent!important;pointer-events:none}.btn--busy:disabled{opacity:1}.btn--busy:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;margin:auto;width:16px;height:16px;border-radius:50%;border:2px 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var(--ease-out)}.input:focus{outline:none;border-color:var(--accent);box-shadow:var(--ring)}.input--xs{width:90px}.input--note{min-width:160px}textarea.input--note{resize:none;field-sizing:content;min-height:36px;max-height:96px;max-width:260px;overflow-y:auto;white-space:normal;display:block}.form-error{min-height:22px}.spacer{flex:1}.switch{display:inline-flex;align-items:center;gap:8px;cursor:pointer}.switch input{position:absolute;opacity:0}.switch__track{width:36px;height:20px;border-radius:var(--radius-full);background:var(--unsynced-dot);position:relative;flex:none;transition:background-color var(--dur-base) var(--ease-out)}.switch__track:after{content:"";position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:var(--shadow-xs);transition:transform var(--dur-base) var(--ease-out)}.switch input:checked+.switch__track{background:var(--ok-dot)}.switch input:checked+.switch__track:after{transform:translate(16px)}.switch 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10px;border-radius:var(--radius-full);font-size:var(--fs-xs);font-weight:600}.status-pill--planned{background:var(--accent-soft);color:var(--accent-strong)}.status-pill--conducted{background:var(--ok-soft);color:var(--ok)}.status-pill--cancelled{background:var(--danger-soft);color:var(--danger)}.status-pill--neutral{background:var(--unsynced-soft);color:var(--unsynced)}.banner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm);font-size:var(--fs-sm)}.banner--error{background:var(--danger-soft);border:1px solid #f0c4c4;color:var(--danger)}.banner--info{background:var(--accent-faint);border:1px solid var(--accent-soft);color:var(--accent-strong)}.save-status{display:inline-flex;align-items:center;gap:6px;font-size:var(--fs-xs);font-weight:600;transition:color var(--dur-base) 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1}.skeleton{background:linear-gradient(90deg,var(--surface-sunken) 25%,#e9eff5 37%,var(--surface-sunken) 63%);background-size:400% 100%;animation:kf-shimmer 1.4s linear infinite;border-radius:var(--radius-sm)}.skeleton--text{height:12px}.skeleton--title{height:18px;width:60%}.skeleton--cell{height:28px}.skeleton-card{height:132px;border-radius:var(--radius)}.empty-state{text-align:center;padding:var(--space-8) var(--space-6);color:var(--muted)}.empty-state__art{width:48px;height:48px;margin:0 auto var(--space-3);color:var(--brand-cyan)}.empty-state__title{font-family:var(--font-display);font-weight:800;font-size:var(--fs-md);color:var(--text);margin-bottom:var(--space-1)}.stat-row{display:flex;gap:var(--space-3);margin-bottom:var(--space-4);flex-wrap:wrap}.stat-chip{display:inline-flex;flex-direction:column;gap:2px;padding:10px 14px;background:var(--surface);border:1px solid 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var(--border-strong);white-space:pre-line;line-height:1.25;vertical-align:middle}table.journal th.col-student,table.journal td.col-student{text-align:left;position:sticky;left:0;background:var(--surface);min-width:180px;z-index:var(--z-sticky-cell)}table.journal thead th.col-student{z-index:3;background:var(--surface-sunken)}table.journal tbody td{transition:background-color var(--dur-slow) var(--ease-out),color var(--dur-slow) var(--ease-out)}tr.row--absent td{background:var(--danger-faint);color:var(--muted)}tr.row--absent td.col-student{background:var(--danger-faint)}tr.row--absent .link-btn{color:var(--muted);text-decoration:line-through;text-decoration-color:var(--border-strong)}table.journal th.col-average,table.journal td.col-average{border-left:2px solid var(--border-strong);font-weight:700}table.journal td.col-readonly{background:var(--surface-sunken);color:var(--muted)}.grade-readonly{display:inline-block;min-width:42px;color:var(--muted)}.journal__student-cell{display:flex;align-items:center;gap:8px;justify-content:space-between}.table-hint{margin-top:8px;font-size:var(--fs-sm)}table.journal--locked tbody td{background:var(--surface-sunken);color:var(--muted)}table.journal--locked tbody td.col-student{background:var(--surface-sunken)}table.journal--locked .grade-input:disabled,table.journal--locked .input:disabled{color:var(--muted)}.grade-input{width:42px;border:1px solid transparent;border-radius:var(--radius-xs);padding:5px 2px;text-align:center;font-size:.92rem;font-family:var(--font-sans);background:transparent;color:var(--text);-webkit-appearance:textfield;appearance:textfield;-moz-appearance:textfield;transition:border-color var(--dur-fast) var(--ease-out),box-shadow var(--dur-fast) var(--ease-out),background-color var(--dur-fast) var(--ease-out)}.grade-input::-webkit-outer-spin-button,.grade-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.grade-input:hover{border-color:var(--border-strong)}.grade-input:focus{outline:none;border-color:var(--accent);background:var(--accent-faint);box-shadow:var(--ring)}.grade-input:disabled{color:var(--text-disabled);background:transparent}.grade-input--low{color:var(--grade-low);font-weight:600}.grade-input--high{color:var(--grade-high);font-weight:600}.grade-input--saved{animation:kf-save-flash .8s var(--ease-out) 1}.grade-input--invalid{animation:kf-shake .3s var(--ease-out) 1;border-color:var(--danger)!important;box-shadow:var(--ring-danger)}tr.row--flash td{animation:kf-save-flash .8s var(--ease-out) 1}.scroll-fade{position:absolute;top:1px;bottom:1px;width:24px;z-index:var(--z-scroll-fade);pointer-events:none;opacity:0;transition:opacity var(--dur-base) var(--ease-out)}.scroll-fade--left{left:1px;border-radius:var(--radius) 0 0 var(--radius);background:linear-gradient(to right,rgba(13,38,59,.1),transparent)}.scroll-fade--right{right:1px;border-radius:0 var(--radius) var(--radius) 0;background:linear-gradient(to left,rgba(13,38,59,.1),transparent)}.journal-table-shell--more-left .scroll-fade--left,.journal-table-shell--more-right .scroll-fade--right{opacity:1}.att-seg{display:inline-flex;gap:2px;padding:2px;border:1px solid var(--border-strong);border-radius:var(--radius-full);background:var(--surface)}.att-seg__btn{border:0;background:transparent;min-width:32px;height:26px;border-radius:var(--radius-full);font:600 var(--fs-xs) var(--font-sans);color:var(--muted);cursor:pointer;transition:background-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.att-seg__btn:hover:not(:disabled){background:var(--surface-hover);color:var(--text-secondary)}.att-seg__btn--present[aria-checked=true]{background:var(--ok-soft);color:var(--ok)}.att-seg__btn--absent[aria-checked=true]{background:var(--danger-soft);color:var(--danger)}.att-seg__btn--cancelled[aria-checked=true]{background:var(--surface-sunken);color:var(--text-secondary)}.att-seg--disabled{opacity:.5;pointer-events:none}.header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:var(--z-header)}.header:after{content:"";display:block;height:2px;background:linear-gradient(90deg,var(--accent) 0%,var(--brand-orange) 100%)}.header__inner{max-width:1280px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:14px}.header__brand{font-family:var(--font-display);font-weight:800}.header__brand span{color:var(--accent)}.header__brand:hover{text-decoration:none;color:var(--accent)}.header__spacer{flex:1}.header__name{color:var(--muted);max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.groups-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}.group-card{position:relative;border-top:3px solid var(--gc-accent, var(--accent));cursor:pointer;text-align:left;width:100%;font:inherit;color:inherit;transition:transform .18s var(--ease-out),box-shadow .18s var(--ease-out),border-color .18s var(--ease-out)}.group-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--border-strong);border-top-color:var(--gc-accent, var(--accent))}.group-card:active{transform:translateY(-1px) scale(.99)}.group-card__title{display:block;font-family:var(--font-display);font-weight:700;font-size:var(--fs-md);margin:0 0 var(--space-3);transition:color var(--dur-base) var(--ease-out)}.group-card:hover .group-card__title{color:var(--accent)}.group-card__arrow{position:absolute;right:14px;top:14px;opacity:0;transform:translate(-4px);transition:opacity var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out);color:var(--accent)}.group-card:hover .group-card__arrow,.group-card:focus-visible .group-card__arrow{opacity:1;transform:none}.group-card__metrics{display:flex;gap:16px;margin-top:10px;color:var(--muted);font-size:.85rem}.group-card__metrics b{color:var(--text);font-size:1rem;display:block}.lesson-bar{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end}.lesson-bar .field{margin-bottom:0;min-width:130px}.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:14px 0}.dialog-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f162373;display:flex;align-items:center;justify-content:center;z-index:var(--z-overlay)}.dialog{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;width:min(440px,92vw);box-shadow:var(--shadow-lg)}.dialog h2{font-family:var(--font-display)}.dialog--danger{border-top:3px solid var(--danger)}.dialog__actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.cal__wd{text-align:center;font-size:.8rem;color:var(--muted);font-weight:600;padding:4px 0}.cal__cell{min-height:66px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:6px;cursor:default;display:flex;flex-direction:column;gap:5px;align-items:flex-start;font:inherit;color:inherit;text-align:left;transition:background-color var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),box-shadow var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out)}.cal__cell:hover{background:var(--accent-faint)}.cal__cell--empty,.cal__cell--empty:hover{background:transparent;border-color:transparent;cursor:default}.cal__cell--today{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}.cal__cell--has{cursor:pointer;box-shadow:var(--shadow-xs)}.cal__cell--has:hover{transform:translateY(-1px);box-shadow:var(--shadow-md);border-color:var(--border-strong)}.cal__cell--has:active{transform:none}.cal__day{font-size:.85rem;color:var(--muted)}.cal__day--today{background:var(--accent);color:var(--on-accent);width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:600}.cal__add{opacity:0;color:var(--muted);transition:opacity var(--dur-fast) var(--ease-out)}.cal__cell:not(.cal__cell--has):not(.cal__cell--empty):hover .cal__add{opacity:.6}.cal__pill{align-self:flex-start;font-size:.72rem;font-weight:600;padding:2px 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