:root{--primary:#4a90e2;--bg:#f8f9fa;--card:#ffffff;--border:#e0e0e0;--text:#333333;--text-light:#777777}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text)}.app-container{display:flex;min-height:100vh}.sidebar{width:340px;min-width:340px;max-height:100vh;position:-webkit-sticky;position:sticky;top:0;background:var(--card);border-right:1px solid var(--border);overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;padding:16px;display:flex;flex-direction:column;gap:12px}.sidebar h2{font-size:1.1rem;margin-bottom:4px}.sidebar-title-row{display:flex;justify-content:space-between;align-items:center;gap:8px}.sidebar-collapse-btn{background:#f0f4ff;border:1px solid var(--border);border-radius:6px;width:32px;height:32px;cursor:pointer;font-size:.9rem;color:var(--primary);display:inline-flex;align-items:center;justify-content:center;transition:background .2s}.sidebar-collapse-btn:hover{background:#e4ecfa}.sidebar-expand-btn{position:fixed;top:12px;left:12px;z-index:50;background:var(--primary);color:#fff;border:none;border-radius:999px;padding:8px 14px;font-size:.9rem;font-weight:600;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.15);transition:transform .15s,box-shadow .15s}.sidebar-expand-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.2)}.sidebar-section{border:1px solid var(--border);border-radius:8px;overflow:hidden}.sidebar-section-header{background:#f0f4ff;padding:10px 14px;font-weight:600;font-size:.9rem;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;display:flex;justify-content:space-between;align-items:center}.sidebar-section-header:hover{background:#e4ecfa}.sidebar-section-body{padding:12px 14px;display:flex;flex-direction:column;gap:10px}label{display:block;font-size:.82rem;font-weight:600;margin-bottom:3px;color:var(--text-light)}input[type=date],input[type=text],select,textarea{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:.9rem;font-family:inherit;outline:none;transition:border-color .2s}input:focus,select:focus,textarea:focus{border-color:var(--primary)}textarea{resize:vertical;min-height:60px}.btn{padding:8px 16px;border:none;border-radius:6px;font-size:.88rem;font-weight:600;cursor:pointer;transition:opacity .2s;width:100%}.btn:hover{opacity:.85}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:white}.btn-danger{background:#e74c3c;color:white}.btn-secondary{background:#eee;color:var(--text)}.btn-small{padding:4px 10px;font-size:.78rem;width:auto}.main-content{flex:1 1;min-width:0;overflow-y:auto;padding:20px 24px}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.page-header h1{font-size:1.5rem}.sync-badge{background:#27ae60;color:white;padding:4px 12px;border-radius:12px;font-size:.82rem}.hint{font-size:.82rem;color:var(--text-light);margin-bottom:8px}.fc{background:var(--card);border-radius:10px;padding:8px;box-shadow:0 1px 6px rgba(0,0,0,.06)}.fc .fc-toolbar-title{font-size:1.2rem!important}.fc .fc-button{font-size:.82rem!important;padding:4px 10px!important}.fc .fc-daygrid-event{border-radius:4px!important;padding:1px 4px!important;font-size:.78rem!important}.day-panel{margin-top:16px;background:#f0f4ff;border-left:5px solid var(--primary);padding:14px 18px;border-radius:8px}.day-panel h3{font-size:1.05rem;margin-bottom:10px}.event-card{border-left:5px solid #607d8b;background:white;padding:10px 14px;border-radius:6px;margin-bottom:6px;box-shadow:0 1px 4px rgba(0,0,0,.06)}.event-card .cat-badge{display:inline-block;color:white;font-size:.7rem;padding:2px 8px;border-radius:10px;margin-right:8px}.event-card .ev-title{font-weight:600}.event-card .ev-meta{font-size:.8rem;color:#555;margin-top:2px}.event-card .ev-desc{font-size:.8rem;color:#777;margin-top:2px}.event-card-actions{margin-top:6px;display:flex;gap:6px}.legend{margin-top:16px;display:flex;flex-wrap:wrap;gap:12px;font-size:.82rem}.legend-item{display:flex;align-items:center;gap:4px}.legend-dot{width:12px;height:12px;border-radius:50%;display:inline-block}.edit-form{background:#fafafa;border:1px solid var(--border);border-radius:8px;padding:12px;margin-top:6px;flex-direction:column}.edit-form,.edit-form-row{display:flex;gap:8px}.edit-form-row>div{flex:1 1}.edit-form-actions{display:flex;gap:6px}.edit-form-actions .btn{flex:1 1}.toast{position:fixed;top:16px;right:16px;background:#27ae60;color:white;padding:10px 20px;border-radius:8px;font-size:.9rem;z-index:9999;animation:fadeInOut 2.5s ease;pointer-events:none}.toast-error{background:#e74c3c}@keyframes fadeInOut{0%{opacity:0;transform:translateY(-10px)}15%{opacity:1;transform:translateY(0)}80%{opacity:1}to{opacity:0}}@media (max-width:768px){.app-container{flex-direction:column;min-height:auto}.sidebar{width:100%;min-width:100%;max-height:none;position:static;overflow-y:visible;border-right:none;border-bottom:1px solid var(--border)}.main-content{padding:12px}}.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:white;border-radius:50%;animation:spin .6s linear infinite;margin-right:6px;vertical-align:middle}@keyframes spin{to{transform:rotate(1turn)}}