:root{--bg-color:#f3f4f6;--sidebar-bg:#fff;--text-color:#333;--border-color:#e5e7eb;--primary-color:#3b82f6;--primary-hover:#2563eb;--danger-color:#ef4444;--modal-bg:#fff;--input-bg:#fff}body.dark-mode{--bg-color:#111827;--sidebar-bg:#1f2937;--text-color:#f9fafb;--border-color:#374151;--primary-color:#3b82f6;--primary-hover:#60a5fa;--danger-color:#ef4444;--modal-bg:#1f2937;--input-bg:#374151;--fc-page-bg-color:var(--bg-color);--fc-neutral-bg-color:var(--sidebar-bg);--fc-neutral-text-color:var(--text-color);--fc-border-color:var(--border-color);--fc-button-text-color:#fff;--fc-button-bg-color:#374151;--fc-button-border-color:#4b5563;--fc-button-hover-bg-color:#4b5563;--fc-button-hover-border-color:#6b7280;--fc-button-active-bg-color:#4b5563}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.app-container{gap:20px;height:100vh;padding:20px;display:flex}.sidebar{background-color:var(--sidebar-bg);border-radius:12px;flex-direction:column;width:250px;padding:20px;display:flex;box-shadow:0 4px 6px -1px #0000001a}.sidebar-header{border-bottom:2px solid var(--border-color);justify-content:space-between;align-items:center;margin-bottom:15px;padding-bottom:10px;display:flex}.sidebar h2{margin:0;font-size:1.2rem}.category-list{flex-direction:column;flex-grow:1;gap:10px;display:flex;overflow-y:auto}.category-item-wrapper{justify-content:space-between;align-items:center;padding:4px 0;display:flex}.category-item{cursor:pointer;flex-grow:1;align-items:center;gap:8px;font-size:.95rem;display:flex}.delete-cat-btn{color:#9ca3af;cursor:pointer;visibility:hidden;padding:0 4px;font-size:1.2rem;line-height:1}.delete-cat-btn:hover{color:var(--danger-color)}.category-item-wrapper:hover .delete-cat-btn{visibility:visible}.add-category-box{background-color:var(--input-bg);border:1px solid var(--border-color);border-radius:6px;align-items:center;margin-top:20px;padding:2px 4px 2px 8px;display:flex}.add-category-box input{background:0 0;border:none;outline:none;flex-grow:1;padding:8px 0;font-size:.9rem}.add-category-box button{background-color:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:4px;justify-content:center;align-items:center;width:28px;height:28px;font-size:1.2rem;font-weight:700;transition:background-color .2s;display:flex}.add-category-box button:hover{background-color:var(--primary-hover)}.search-box{margin-bottom:5px}.search-box input{border:1px solid var(--border-color);background-color:var(--input-bg);width:100%;color:var(--text-color);border-radius:6px;outline:none;padding:8px 10px;font-size:.95rem;transition:border-color .2s}.search-box input:focus{border-color:var(--primary-color)}.fc-day-sun .fc-daygrid-day-number,.fc-day-sun .fc-col-header-cell-cushion{color:#ef4444!important}.fc-day-sat .fc-daygrid-day-number,.fc-day-sat .fc-col-header-cell-cushion{color:#3b82f6!important}.holiday-red .fc-daygrid-day-number{color:#ef4444!important}.fc-icon-theme-toggle:before{content:"🌙";font-family:sans-serif;font-size:1.2rem;font-style:normal}body.dark-mode .fc-icon-theme-toggle:before{content:"☀️"}.calendar-container{background-color:var(--sidebar-bg);border-radius:12px;flex-grow:1;padding:20px;overflow:hidden;box-shadow:0 4px 6px -1px #0000001a}.fc-event{cursor:pointer;transition:transform .15s,box-shadow .15s,filter .15s;border-left-width:4px!important;border-radius:4px!important}.fc-event:hover{filter:brightness(.95);transform:translateY(-2px)scale(1.02);box-shadow:0 4px 12px #00000040;z-index:10!important}.fc-event .fc-event-main{padding-left:12px!important}.fc-event .fc-event-main,.fc-event .fc-event-title,.fc-event .fc-event-time{text-shadow:0 1px 3px #ffffffe6;font-weight:600;color:var(--text-color)!important}body.dark-mode .fc-event .fc-event-main,body.dark-mode .fc-event .fc-event-title,body.dark-mode .fc-event .fc-event-time{text-shadow:0 1px 3px #000000e6;color:var(--text-color)!important}.modal{z-index:1000;background-color:#00000080;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:fixed;top:0;left:0}.modal.hidden{display:none}.modal-content{background-color:var(--modal-bg);border-radius:8px;width:400px;padding:25px;box-shadow:0 10px 15px -3px #0000001a}.modal-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.close-btn{cursor:pointer;font-size:1.5rem}.form-group{margin-bottom:15px}.form-group label{margin-bottom:5px;font-size:.9rem;font-weight:700;display:block}.form-group input[type=text],.form-group input[type=date],.form-group select,.form-group input[type=color]{border:1px solid var(--border-color);background-color:var(--input-bg);width:100%;color:var(--text-color);border-radius:4px;padding:8px}.modal-footer{justify-content:flex-end;gap:10px;margin-top:25px;display:flex}.btn{cursor:pointer;border:none;border-radius:4px;padding:8px 16px;font-weight:700}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.btn-danger{background-color:var(--danger-color);color:#fff}.color-picker-container{flex-wrap:wrap;gap:8px;margin-top:5px;display:flex}.color-btn{cursor:pointer;border:2px solid #0000;border-radius:50%;width:24px;height:24px;padding:0}.color-btn.selected{border-color:var(--text-color);transform:scale(1.1)}.add-category-box input{color:var(--text-color)}@media (width<=768px){.app-container{flex-direction:column;gap:10px;height:auto;min-height:100vh;padding:10px}.sidebar{border-radius:8px;width:100%;padding:15px}.sidebar-header{margin-bottom:10px;padding-bottom:5px}.category-list{flex-flow:wrap;gap:8px}.category-item-wrapper{background-color:var(--input-bg);border:1px solid var(--border-color);border-radius:20px;padding:6px 12px}.calendar-container{border-radius:8px;height:600px;padding:10px}.fc-header-toolbar{gap:12px;flex-direction:column!important}.fc-toolbar-chunk{justify-content:center;width:100%;display:flex}.fc-event .fc-event-title{font-size:.75rem}.fc-toolbar-title{font-size:1.25rem!important}.modal-content{width:95%;padding:20px}}.category-badge{background-color:var(--primary-color);color:#fff;border-radius:12px;margin-bottom:4px;margin-right:6px;padding:4px 10px;font-size:.85rem;font-weight:500;display:inline-block}