*{
    font-family: "Poppins", sans-serif;
    margin: 0;
}

body {
    background: linear-gradient(to right, #F8BDC4, #80A1D4, #A288A6);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
} 

#outer-box {
    height: 15rem;
    width: 90%;
    max-width: 30rem;
    transition: height 0.5s ease;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);;
    border-radius: 0.5rem;
    margin: 2rem;
    padding: 2rem;
    text-align: center;
}

#input-div {
    margin: 1rem;
}


#task-input {
    background: transparent;
    border: 2px solid rgba(0, 0, 0, 0.3);
    color: black;
    height: 0.5rem;
    width: 50%;
    max-width: 15rem;
    border-radius: 50px;
    margin: 1rem;
    padding: 1rem;
    outline: none;
    transition: all 0.1s ease;
}

#task-input:focus {
    border: 2px solid #373737;
}


#task-input:-webkit-autofill,
#task-input:-webkit-autofill:hover, 
#task-input:-webkit-autofill:focus, 
#task-input:-webkit-autofill:active {
    transition: background-color 5000s ease-in-out 0s;
    -webkit-text-fill-color: black !important;
}

label {
    cursor: pointer;
}

button {
    cursor: pointer;
    outline: none;
    border: none;
    height: 2.5rem;
    padding: 0.5rem 1rem 0.5rem 1rem;
    font-weight: 700;
    background-color: #C1DBE3;
    color: #373737;
    border-radius: 50px;
    border: 3px solid transparent;
    transition: all 0.3s ease;
}

button:hover {
    background-color: #373737;
    color: #C1DBE3;
    border: 3px solid #C1DBE3;
    transform: scale(1.1);
    box-shadow: 0 0 15px #C1DBE3;
}

.task-holder-outer {
    display: inline-block;
    min-height: 3rem;
    height: auto;
    width: 55%;
    max-width: 15rem;
    text-align: left;
    font-size: 1.3rem;
    padding-right: 2rem;
}

.task-holder-inner {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}


.task-checkbox {
    appearance: none;
    -webkit-appearance: none;
    height: 1.5rem;
    width: 1.5rem;
    border: 2px solid #373737;
    border-radius: 50%; 
    cursor: pointer;
    display: grid;
    place-content: center;
    transition: all 0.2s ease;
}


.task-checkbox::before {
    content: "✔";
    color: #C1DBE3;
    font-size: 1rem;
    transform: scale(0);
    transition: 0.2s transform ease-in-out;
}


.task-checkbox:checked {
    background-color: #373737;
}


.task-checkbox:checked::before {
    transform: scale(1);
}


.task-holder-inner:has(.task-checkbox:checked) label {
    text-decoration: line-through;
    color: #555;
    transition: all 0.3s ease;
}

@media (max-width: 450px) {
    #outer-box {
        width: 95%;
        padding: 1rem;
        margin: 1rem;
        height: 15rem;
    }

    #input-div {
        display: flex;
        justify-content: space-around;
        align-items: center;
        gap: 1.5rem;
    }

    #task-input {
        width: auto;
        flex: 1;
        margin: 0;
    }

    #add-button {
        width: auto;
        padding: 0.5rem 1rem;
        white-space: nowrap;
    }

    li {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 0.5rem;
    }


    .task-holder-outer {
        width: 65%;
        padding-right: 0.5rem;
        font-size: 1.1rem;
    }

    .task-holder-inner {
        width: 100%;
    }

    button.dlt {
        padding: 0.3rem 0.8rem;
        font-size: 0.9rem;
        height: 2.2rem;
        margin-bottom: 1.5rem;
    }
}