*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;

    font-family: sans-serif;
}

button{
    border: none;
    appearance: none;
    background: none;
    outline: none;
    cursor: pointer;
}

body{
    background-color: #242948;
    color: #fff;
}

main{
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem 1.5rem;
}

.app{
    width: 100%;
    max-width: 768px;    
}

.app header{
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.app header h1{
    color: #fff;
    font-size: 24px;
    font-weight: 400;
}

.app header button{
    color: #fff;
    font-size: 18px;
    border-bottom: 2px solid #fff;
    text-transform: uppercase;
}   

.item{
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    border-radius: 1rem;
    background-color: #1e223d;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 1.5rem;
}

.item:last-of-type{
    margin-bottom: 0;
}

.item input[type="checkbox"]{
    margin-right: 1rem;
}

.item input[type="text"]{
    appearance: none;
    background: none;
    border: none;
    outline: none;
    font-weight: 400;
    color: #fff;
    font-size: 20px;
    flex: 1 1 0%;
    margin-right: 1rem;
}   

.item input[type="text"]:not(:disabled){
    border-bottom: 2px solid #fff;
}

.item.complete{
    opacity: 0.7;
}

.item.complete input[type="text"]{
    text-decoration: line-through;
}

.item:hover,
item:focus-within{
    outline: 2px solid #fff; 
}

.actions button{
    color: #ccc;
    margin-right: 1rem;
    opacity: 0.8;
    transform: 0.1s;
}

.actions button.remove-btn{
    color: crimson;
}

.actions button:hover{
    opacity: 1;
}

.actions button:last-of-type{
    margin-right: 0;
}