*{margin:0;padding:0;box-sizing:border-box}:root{--bg: #ffffff;--surface: #f9fafb;--surface-hover: #f3f4f6;--surface-raised: #e5e7eb;--border: #e5e7eb;--border-light: #d1d5db;--text: #111827;--text-muted: #6b7280;--text-dim: #9ca3af;--accent: #3b82f6;--accent-hover: #2563eb;--danger: #ef4444;--danger-hover: #dc2626;--radius: 12px;--radius-sm: 8px;--radius-xs: 6px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--bg);color:var(--text);min-height:100vh}#root{width:100%;height:100vh}.calendar-app{display:flex;height:100vh;overflow:hidden}.calendar-main{flex:1;display:flex;flex-direction:column;min-width:0;padding:1.5rem}.calendar-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;flex-shrink:0}.calendar-title h1{font-size:1.5rem;font-weight:600;letter-spacing:-.02em;color:var(--text)}.calendar-nav{display:flex;align-items:center;gap:.5rem}.nav-btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem .75rem;font-size:.8125rem;font-weight:500;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:background .15s,border-color .15s;line-height:1}.nav-btn:hover{background:var(--surface-hover);border-color:var(--border-light)}.nav-btn svg{display:block}.calendar-grid{flex:1;display:flex;flex-direction:column;min-height:0}.calendar-weekdays{display:grid;grid-template-columns:repeat(7,1fr);border-bottom:1px solid var(--border);flex-shrink:0}.weekday{padding:.5rem;text-align:center;font-size:.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}.calendar-days{display:grid;grid-template-columns:repeat(7,1fr);flex:1;min-height:0}.day-cell{border:1px solid var(--border);border-top:none;border-left:none;padding:.375rem;display:flex;flex-direction:column;cursor:pointer;transition:background .12s;overflow:hidden;min-height:0}.day-cell:nth-child(7n+1){border-left:1px solid var(--border)}.day-cell:nth-child(-n+7){border-top:1px solid var(--border)}.day-cell:hover{background:var(--surface)}.day-cell.selected{background:var(--surface-hover)}.day-cell.other-month{opacity:.35}.day-number{font-size:.75rem;font-weight:500;color:var(--text-muted);width:1.625rem;height:1.625rem;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;flex-shrink:0;margin-bottom:.125rem}.day-cell.today .day-number.today-badge{background:var(--accent);color:#fff;font-weight:600}.day-cell.selected .day-number{color:var(--text)}.day-events{display:flex;flex-direction:column;gap:1px;overflow:hidden;flex:1;min-height:0}.day-event{display:flex;align-items:center;gap:.25rem;padding:.125rem .25rem;border-radius:var(--radius-xs);font-size:.6875rem;line-height:1.3;cursor:pointer;overflow:hidden;white-space:nowrap;flex-shrink:0;transition:opacity .12s}.day-event:hover{opacity:.8}.event-time{color:var(--text-muted);font-size:.625rem;flex-shrink:0}.event-title{overflow:hidden;text-overflow:ellipsis}.day-event-more{font-size:.625rem;color:var(--text-muted);padding:.0625rem .25rem}.sidebar{width:320px;border-left:1px solid var(--border);background:var(--surface);display:flex;flex-direction:column;flex-shrink:0;overflow:hidden}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:1.25rem 1.25rem 1rem;border-bottom:1px solid var(--border);flex-shrink:0}.sidebar-header h2{font-size:.9375rem;font-weight:600;color:var(--text)}.btn-add{width:2rem;height:2rem;display:inline-flex;align-items:center;justify-content:center;font-size:1.25rem;font-weight:300;color:var(--text);background:var(--surface-hover);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:background .15s,border-color .15s;line-height:1}.btn-add:hover{background:var(--surface-raised);border-color:var(--border-light)}.sidebar-empty{padding:1.25rem;font-size:.8125rem;color:var(--text-dim);line-height:1.5}.sidebar-events{flex:1;overflow-y:auto;padding:.75rem;display:flex;flex-direction:column;gap:.5rem}.sidebar-event{padding:.75rem;background:var(--bg);border-radius:var(--radius-sm);cursor:pointer;transition:background .12s}.sidebar-event:hover{background:var(--surface-hover)}.sidebar-event-title{font-size:.875rem;font-weight:500;color:var(--text);margin-bottom:.25rem}.sidebar-event-time{font-size:.75rem;color:var(--text-muted)}.sidebar-event-desc{margin-top:.375rem;font-size:.75rem;color:var(--text-dim);line-height:1.4}.modal-overlay{position:fixed;inset:0;background:#0000004d;display:flex;align-items:center;justify-content:center;z-index:100;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:var(--bg);border:1px solid var(--border);box-shadow:0 8px 30px #0000001f;border-radius:var(--radius);width:100%;max-width:440px;max-height:90vh;overflow-y:auto;padding:1.5rem}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.25rem}.modal-header h2{font-size:1.125rem;font-weight:600}.modal-close{background:none;border:none;color:var(--text-muted);font-size:1.5rem;cursor:pointer;padding:.25rem;line-height:1;transition:color .12s}.modal-close:hover{color:var(--text)}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.75rem;font-weight:500;color:var(--text-muted);margin-bottom:.375rem;text-transform:uppercase;letter-spacing:.04em}.form-group input[type=text],.form-group input[type=date],.form-group input[type=time],.form-group textarea{width:100%;padding:.625rem .75rem;font-size:.875rem;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);outline:none;font-family:inherit;transition:border-color .15s}.form-group input:focus,.form-group textarea:focus{border-color:var(--accent)}.form-group textarea{resize:vertical}.form-row{margin-bottom:1rem}.time-row{display:flex;gap:.75rem}.time-row .form-group{flex:1;margin-bottom:0}.checkbox-label{display:inline-flex;align-items:center;gap:.5rem;font-size:.875rem;color:var(--text);cursor:pointer}.checkbox-label input[type=checkbox]{width:1rem;height:1rem;accent-color:var(--accent);cursor:pointer}.color-picker{display:flex;gap:.5rem;flex-wrap:wrap}.color-swatch{width:1.75rem;height:1.75rem;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:transform .12s,border-color .12s}.color-swatch:hover{transform:scale(1.1)}.color-swatch.active{border-color:var(--text);box-shadow:0 0 0 2px var(--bg),0 0 0 4px var(--text-muted);transform:scale(1.1)}.modal-actions{display:flex;align-items:center;justify-content:space-between;margin-top:1.5rem;padding-top:1rem;border-top:1px solid var(--border)}.modal-actions-right{display:flex;gap:.5rem;margin-left:auto}.btn-cancel{padding:.5rem 1rem;font-size:.8125rem;font-weight:500;color:var(--text-muted);background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:background .15s,color .15s}.btn-cancel:hover{background:var(--surface-hover);color:var(--text)}.btn-save{padding:.5rem 1rem;font-size:.8125rem;font-weight:500;color:#fff;background:var(--accent);border:1px solid var(--accent);border-radius:var(--radius-sm);cursor:pointer;transition:background .15s}.btn-save:hover{background:var(--accent-hover)}.btn-delete{padding:.5rem 1rem;font-size:.8125rem;font-weight:500;color:var(--danger);background:transparent;border:1px solid var(--danger);border-radius:var(--radius-sm);cursor:pointer;transition:background .15s,color .15s}.btn-delete:hover{background:var(--danger);color:#fff}.sidebar-events::-webkit-scrollbar{width:4px}.sidebar-events::-webkit-scrollbar-track{background:transparent}.sidebar-events::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}@media(max-width:768px){.calendar-app{flex-direction:column}.sidebar{width:100%;border-left:none;border-top:1px solid var(--border);max-height:40vh}.calendar-main{padding:1rem}.day-event{font-size:.625rem}.event-time{display:none}}