:root{--color-bg: #f8fafc;--color-surface: #ffffff;--color-text-primary: #1e293b;--color-text-secondary: #64748b;--color-border: #e2e8f0;--color-primary: #3b82f6;--color-kimitsu: #e0f2fe;--text-kimitsu: #0369a1;--border-kimitsu: #bae6fd;--color-ichihara: #fff7ed;--text-ichihara: #c2410c;--border-ichihara: #fed7aa;--color-vacation: #ffe4e6;--text-vacation: #be123c;--border-vacation: #fecdd3;--color-round: #dcfce7;--text-round: #15803d;--border-round: #bbf7d0;--color-meeting: #f3e8ff;--text-meeting: #7e22ce;--border-meeting: #d8b4fe;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1)}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text-primary);margin:0;display:flex;justify-content:center;min-height:100vh;padding:2rem}#root{width:100%;max-width:1000px}.app-container{display:flex;flex-direction:column;gap:2rem}.header{display:flex;justify-content:space-between;align-items:center;background:var(--color-surface);padding:1.5rem;border-radius:1rem;box-shadow:var(--shadow-sm);flex-wrap:wrap;gap:1rem}.header-controls{display:flex;gap:1rem;align-items:center}.month-input{font-size:1.25rem;padding:.6rem;border:1px solid var(--color-border);border-radius:.5rem;background:var(--color-bg);color:var(--color-text-primary)}.btn{padding:.6rem 1.2rem;border-radius:.5rem;border:none;font-weight:600;font-size:1rem;cursor:pointer;transition:all .2s;background:var(--color-bg);color:var(--color-text-secondary);border:1px solid 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transparent}.shift-Kimitsu{background:var(--color-kimitsu);color:var(--text-kimitsu);border-color:var(--border-kimitsu)}.shift-Ichihara{background:var(--color-ichihara);color:var(--text-ichihara);border-color:var(--border-ichihara)}.shift-Vacation{background:var(--color-vacation);color:var(--text-vacation);border-color:var(--border-vacation)}.shift-Round{background:var(--color-round);color:var(--text-round);border-color:var(--border-round)}.shift-Meeting{background:var(--color-meeting);color:var(--text-meeting);border-color:var(--border-meeting)}.legend{display:flex;justify-content:center;gap:1rem;margin-top:1rem;flex-wrap:wrap}.legend-item{display:flex;align-items:center;gap:.5rem;font-size:1.2rem}.legend-color{width:1.5rem;height:1.5rem;border-radius:.25rem}@media(max-width:768px){body{padding:.5rem}.header{padding:1rem;flex-direction:column;align-items:flex-start}.header-controls{width:100%;justify-content:space-between;flex-wrap:wrap}.calendar-title{font-size:1.75rem;margin-bottom:.5rem}.calendar-cell-header{padding:.5rem .25rem;font-size:.9rem}.calendar-cell{min-height:80px;padding:.25rem}.date-label{font-size:1rem}.shift-badge{font-size:.8rem;padding:.2rem .4rem}.holiday-label{display:none}.legend-item{font-size:.9rem}.btn{padding:.5rem .8rem;font-size:.9rem}}@media(max-width:480px){.calendar-cell{min-height:60px}.date-label{font-size:.9rem}.shift-badge{font-size:.7rem;padding:.1rem .2rem}.month-input{font-size:1rem;padding:.4rem}}.footer{margin-top:auto;padding:2rem;background-color:var(--color-surface);border-radius:1rem;box-shadow:var(--shadow-sm);display:flex;justify-content:space-between;align-items:center;position:relative}.footer-logo-container{flex:1;display:flex;justify-content:center}.footer-logo{height:40px;width:auto;opacity:.8}.footer-info{position:absolute;right:2rem;text-align:right;font-size:.9rem;color:var(--color-text-secondary);line-height:1.4}.footer-info p{margin:0}@media(max-width:768px){.footer{flex-direction:column;gap:1rem;text-align:center}.footer-info{position:static;text-align:center}}.modal-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background:#fff;padding:2rem;border-radius:1rem;width:90%;max-width:500px;max-height:90vh;overflow-y:auto;box-shadow:0 4px 6px -1px #0000001a}.modal-content h3{margin-top:0;margin-bottom:1rem;color:var(--color-text-primary)}.form-group{margin-bottom:1rem;display:flex;flex-direction:column;gap:.5rem}.form-group label{font-weight:500;font-size:.9rem;color:var(--color-text-secondary)}.form-group input,.form-group textarea{padding:.6rem;border:1px solid var(--color-border);border-radius:.5rem;font-size:1rem}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 2px #3b82f61a}.error{color:#ef4444;font-size:.85rem}.radio-group{display:flex;gap:1rem}.radio-label{display:flex;align-items:center;gap:.5rem;cursor:pointer}.time-slots{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:.5rem}.time-slot-btn{padding:.5rem;border:1px solid var(--color-border);background:var(--color-surface);border-radius:.5rem;cursor:pointer;transition:all .2s}.time-slot-btn:hover:not(:disabled){background:#f1f5f9}.time-slot-btn.selected{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.time-slot-btn.taken{background:#f1f5f9;color:#cbd5e1;cursor:not-allowed;border-color:#f1f5f9}.form-actions{display:flex;justify-content:flex-end;gap:1rem;margin-top:2rem}@media(max-width:600px){.modal-content{padding:1rem;width:95%}.form-group input,.form-group textarea{font-size:16px}.time-slots{grid-template-columns:repeat(3,1fr)}.form-actions{flex-direction:column-reverse;gap:.5rem}.form-actions .btn{width:100%}}