body{margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:#eef2f7}.container{max-width:720px;margin:40px auto;padding:24px;background:#fff;border-radius:10px;box-shadow:0 2px 10px #00000014}h1{margin-bottom:8px;text-align:center;color:#1f2937}.sub-text{text-align:center;margin-bottom:20px;color:#6b7280}.todo-form,.filters,.actions{display:flex;gap:10px;margin-bottom:20px}input,select,button{padding:10px;border:1px solid #ccc;border-radius:6px}input,select{flex:1}button{background:#222;color:#fff;cursor:pointer}.todo-item{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px;border:1px solid #ddd;border-radius:6px;margin-bottom:10px;background:#fafafa}.todo-item h3{margin:0 0 6px}.todo-item p{margin:0 0 8px;color:#555}.delete-btn{background:#dc143c}.cancel-btn{background:gray}.done{color:green;font-weight:700;text-transform:capitalize}.pending{color:orange;font-weight:700;text-transform:capitalize}.error{color:red;margin-bottom:15px}.edit-box{border:1px solid #ddd;padding:15px;border-radius:8px;margin-bottom:20px;background:#f9fafb}.edit-box h3{margin-top:0;margin-bottom:12px}