.container { 
    width: 100%;
    min-height: 100vh;
    background: lightblue;
    padding: 10px;
}
.todo-app{
    width:100%;
    max-width:540px;
    background:#fff;
    margin:100px auto 20px;
    padding:40px 30px 70px;
    border-radius: 10px ;
}
.todo-app h2{
    color:#000000;
    display:flex;
    align-items: center;
    margin-bottom:20px;
}
.todo-app h2 img{
    width:30px;
    margin-left: 10px;
}
.row{
    display:flex;
    align-items: center;
    justify-content: space-between;
    background: #edeef0;
    border-radius: 30px;
    padding-left: 20px;
    padding-bottom: 1px;
}
input{
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    padding: 10px;
}
button{
    border: none;
    outline: none;
    padding:16px 50px;
    background:lightblue;
    color: #fff;
    font-size: 16px; 
cursor: pointer;
border-radius: 40px;
}
ul li{
    list-style: none;
    font-size: 17px;
    padding: 12px 8px 12px 50px;
    user-select: none;
    cursor: pointer;
    position: relative;
}
ul li::before{
    content:'';
    position: absolute;
    height: 28px;
    width: 28px;
    border-radius: 0%; 
    background-image: url(Images/unchecked.png);
background-size: cover;
background-position: center;
top: 7px;
left: 8px;
}
ul li.checked{
    color: #555;
    text-decoration: line-through;

}
ul li.checked::before{
    background-image: url(Images/checked.png);
}
ul li span{
    position: absolute;
    right:0;
    top:5px;
    width:40px;
    height: 40px;
    font-size: 22px;
    color: #555;
    line-height: 40px;
    text-align: center;
}
ul li span:hover{
    background: #edeef0;
}


/* Dark mode styles */
body.dark-mode {
    background-color: #4b4a4a;
    color: #f0f0f0;
}

body.dark-mode .todo-app {
    background-color: #4b4a4a;
}

/* Style for the Dark Mode button */
#dark-mode-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #333;
}

/* Style delete (×) button normally */
ul li span {
    color: lightblue;
    font-weight: bold;
    cursor: pointer;
}

/* Dark mode delete button color */
body.dark-mode ul li span {
    color: #4a90e2; /* Darker red for better contrast in dark mode */
}

/* Dark mode container background */
body.dark-mode .container {
    background-color: #4a90e2; /* Darker blue for dark mode */
}

/* Dark mode button styles */
body.dark-mode button {
    background-color: #4a90e2; /* Darker button in dark mode */
    color: white;
}