:root {
    --text-color: rgb(29, 29, 29);
    --background-color:  antiquewhite;

    --card-color: rgb(253, 221, 182);
    --border-color: rgb(29, 29, 29);

    --shadow-color: rgba(14, 14, 14, 0.479);

    font-family: monospace;
    font-weight: 700;
    font-size: larger;
}

[data-theme="dark"] {
    --text-color: rgb(161, 161, 161);
    --background-color: rgb(40, 40, 40);

    --card-color: rgb(29, 29, 29);
    --border-color: rgb(161, 161, 161);

    --shadow-color: rgb(14, 14, 14);
}




body {
    background-color: var(--background-color)
}

.heading-primary {
    color: var(--text-color);
    text-align: center;
    margin-top: 40px;
    margin-bottom: 0px;
}

.heading-secondary {
    color: var(--text-color);
    text-align: left;
}

.card {
    width: 200px;
    height: 150px;

    text-decoration: none;
    margin: 30px;
    background-color: var(--card-color);

    display: flex;
    justify-content: center;
    align-items: center;

    border: solid;
    border-color: var(--card-color);
    border-width: 10px;
    border-radius: 10px;

    box-shadow: 0px 10px 10px var(--shadow-color);

    transition: ease 0.3s;
}

.card:hover {
    transform:translateY(-20px);
    box-shadow: 0px 20px 15px var(--shadow-color);
    transition: ease 0.3s;
}

.card-text {
    color: var(--text-color);
    text-align: center;
    align-content: center;

    border: solid;
    border-color: var(--border-color);
    border-radius: 5px;

    padding: 0px;
    margin: 0px;

    width: 100%;
    height: 100%;
}

.container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.icon {
    position: absolute;
    color: var(--border-color);

    top: 0px;

    transform: scale(1.8);
}

.theme-icon {
    right: 0px;
    cursor: pointer;
}

.qr-icon {
    margin: 50px;
    left: 0px;
}

.theme-change-button {
    text-decoration: none;
}

.divider {
    color: var(--text-color);
    height: 2px;
    background-color: var(--text-color);
}

.qr-code {
    display: flex;
    justify-content: center;
}

#theme-toggle {
    position: absolute;
    right: 0px;
    top: 0px;
    width: 40px;
    height: 40px;
    margin: 50px;
    background: none;
    border: none;
}

.button-back {
    text-decoration: none;
}

.back-icon {
    margin: 50px;
}

.qr-code {
    opacity: 0;
    transition: ease 0.3s;

    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);

    display: flex;
    justify-content: center;
    align-items: center;

    opacity: 0;
    visibility: hidden;
    transition: 0.2s ease;
    z-index: 999;
}

.qr-icon-area:active ~ .qr-code {
    opacity: 1;
    visibility: visible;
    transition: ease 0.3s;
}

@media (max-width: 1279px) {
    #qrcode {
        transform: scale(1.6);
    }
}


@media (min-width: 1280px) {
    #qrcode {
        transform: scale(3.0);
    }
}