*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body{
    height: 100vh;
    width: 100vw;
    background: hsl(130, 21%, 90%);
    display: flex;
    justify-content: center;
    align-items: center;
}


.container{
    background: #f6fbf7; 
    padding: 40px 50px;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(46, 125, 50, 0.18);
    border: 1px solid rgba(46, 125, 50, 0.15);
}


#taskinput{
    width: 300px;
    padding: 10px 12px;
    border: 2px solid #2e7d32; /* emerald */
    background-color: #ffffff;
    border-radius: 6px;
    font-size: 15px;
    outline: none;
    color: #1b5e20;
}

#taskinput::placeholder{
    color: #7fae86;
}

#mybutton{
    padding: 10px 16px;
    border: none;
    background: #2e7d32;
    color: #ffffff;
    font-size: 15px;
    border-radius: 6px;
    cursor: pointer;
    margin-left: 10px;
    transition: background 0.25s ease, transform 0.15s ease;
}

#mybutton:hover{
    background: #1b5e20;
    transform: translateY(-1px);
}


#task{
    margin-top: 20px;
    list-style: none;
}


.todo-item{
    display: flex;
    align-items: center;
    gap: 10px;

    background: #e3f2e6; /* pale green */
    padding: 12px 14px;
    margin-bottom: 10px;

    border-radius: 8px;
    border: 1px solid #c8e6c9;
    box-shadow: #58b75e 0px 4px 6px -1px, #1b5e20 0px 2px 4px -1px;
    color: #1b5e20;
}


.todo-item input[type="checkbox"]{
    accent-color: #2e7d32;
}

.todo-item:hover{
    background: #d7eddc;
}


.todo-item input:checked + span{
    text-decoration: line-through;
    color: #6d8f74;
}

.todo-item span {
    flex: 1;   
}

.delete-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 18px;
    color: #0a190b;
}

.delete-btn:hover {
    color: #c62828;
}