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280px)}.draggable{cursor:grab}.task-item{display:flex;align-items:center;background:#fff;padding:16px;border-radius:8px;border:1px solid #e5e7eb}.task-item:hover{box-shadow:0 2px 8px #00000014}.checkbox{width:18px;height:18px;margin-right:12px;border:2px solid #333;border-radius:4px;background:#fff;cursor:pointer;font-size:14px;display:flex;justify-content:center;align-items:center;transition:all .2s;flex-shrink:0}.checkbox:hover{border-color:#111827}.checkbox.completed{background-color:#111827;border-color:#111827;color:#fff}.task-text{flex:1;font-size:14px;color:#111827;transition:all .2s;margin-right:12px}.task-text.completed{text-decoration:line-through;color:#9ca3af}.edit-btn,.delete-btn,.delete-list-btn,.save-btn{background:none;border:none;cursor:pointer;font-size:16px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:all 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#e5e7eb}.main-content{width:100%;height:auto}}.task-details{display:flex;flex-direction:column;gap:4px}.task-date,.due-date{font-size:12px;color:#6b7280;padding:5px}.due-date.overdue,.task-text.overdue{color:#dc2626;font-weight:600}.date-picker-wrapper{position:relative;display:inline-flex;align-items:center;justify-content:center;height:48px;width:48px;flex-shrink:0}.date-picker{position:absolute;top:0;left:0;width:48px;height:48px;opacity:0;cursor:pointer;z-index:1}.calendar-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none;font-size:35px;z-index:0}.date-picker::-webkit-calendar-picker-indicator{position:absolute;top:0;left:0;width:48px;height:48px;cursor:pointer}.theme-toggle{position:fixed;bottom:16px;right:16px;z-index:1000}.theme-toggle button{width:40px;height:40px;border-radius:9999px;border:1px solid #d1d5db;background:#fff;color:#111827;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px 8px #00000014}.theme-toggle button:hover{background:#f3f4f6}[data-theme=dark] .theme-toggle button{border-color:#374151;background:#1f2937;color:#e5e7eb}[data-theme=dark]{color-scheme:dark}[data-theme=dark] body{background-color:#0f172a;color:#e5e7eb}[data-theme=dark] .main-content{background-color:#0f172a}[data-theme=dark] .sidebar{background-color:#111827;border-right-color:#374151}[data-theme=dark] .sidebar-title{color:#e5e7eb}[data-theme=dark] .new-list-container input{background-color:#111827;color:#e5e7eb;border-color:#374151}[data-theme=dark] .new-list-container input::placeholder{color:#9ca3af}[data-theme=dark] .new-list-container input:focus{border-color:#6b7280;box-shadow:0 0 0 2px #6b728040;background-color:#0f172a}[data-theme=dark] .list-item:hover{background-color:#0f172a}[data-theme=dark] .list-btn{color:#d1d5db}[data-theme=dark] .list-btn:hover{background-color:#1f2937}[data-theme=dark] .list-btn.active{background-color:#374151;color:#f9fafb}[data-theme=dark] 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