* {
    box-sizing: border-box;
}

a {
    color: var(--blue-1);
}

html {
    font-family:
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Oxygen,
        Ubuntu,
        Cantarell,
        "Open Sans",
        "Helvetica Neue",
        sans-serif;
    --blue-1: rgb(4, 139, 236);
    --pink-1: rgb(236, 4, 174);
    --pink-0: rgba(236, 4, 174, 0.4);
    --purple-1: rgb(101, 4, 236);
    --green-1: rgb(0, 186, 75);
    --grey-1: rgb(118, 139, 163);

    --bp-s: 480px;
    --bp-m: 768px;
    --bp-l: 1280px;

    font-size: 24px;
}
body {
    margin: 0;
}

.logo {
    display: flex;
    gap: 0.25em;
    align-items: center;
    color: inherit;
    font-size: 1.2em;
    text-decoration: none;
}

.logo svg {
    width: 1em;
    height: 1em;
}

main {
    padding: 1rem;
}

h1,
h2,
h3,
h4,
h5,
h6,
strong,
header {
    font-family: "Indie Flower", cursive;
    font-weight: 400;
    font-style: normal;
    margin: 0;
}

h2 {
    margin-bottom: 1rem;
}

.card {
    color: var(--theme-color);
    border: 1px solid var(--theme-color);
    border-radius: 8px;
    overflow: hidden;
}

.card-series {
    padding: 0.5rem 1rem;
    font-size: 0.8em;
}

.card-title {
    margin: 0;
    color: white;
    background-color: var(--theme-color);
    font-size: 1.6em;
    min-height: 92px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-content {
    text-align: center;
}

.card-content img {
    margin: 16px;
    border: 2px solid black;
}

.card-comingsoon {
    --theme-color: var(--grey-1);
    opacity: 0.5;
}

.card-blue {
    --theme-color: var(--blue-1);
}
.card-pink {
    --theme-color: var(--pink-1);
}
.card-purple {
    --theme-color: var(--purple-1);
}
.card-green {
    --theme-color: var(--green-1);
}

.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 400px));
    gap: 1rem;
}

@media (max-width: 768px) {
    .book-grid {
        justify-content: center;
    }
}

header.site-header {
    padding: 0.5rem 1rem;
    border-bottom: 1px solid;
    background-image: linear-gradient(var(--blue-1), var(--pink-1));
    color: white;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}