:root {
    --default-text: #000;
    --primary-color: #bb00ff;
    --secondary-color: #5eff00;

    --default-bg: #fff;
    --second-bg:  #ddd;
    --third-bg: #bbb;
}

* {
    transition: all .5s;
}

@media (prefers-color-scheme: dark) {
    :root {
        --default-text: #fff;
        --default-bg: #222;
        --second-bg: #777;
        --third-bg: #aaa;
    }
}

html {
    color: var(--default-text);
    background: var(--default-bg);
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

body {
    margin: 0;
    padding: 0;
}

a {
    color: var(--default-text);
    text-decoration: none;
}

a:hover {
    color: var(--primary-color);
}

header {
    background: var(--second-bg);
    display: grid;
    grid-template-columns: 1.5fr 0.5fr;
    height: 7vh;
    align-items: center;
}

header span {
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0.5rem 1rem;
}

header div {
    text-align: right;
    display: inline;
}

header div a {padding: 1.5rem;}

header div a:hover {
    background: var(--third-bg);
    padding: 1.5rem 1.5rem 2.5rem 1.5rem;
}

main {
    margin: 0 auto;
    padding: 1rem;
    max-width: 800px;
}

#movies {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    flex-direction: row;
    gap: 1rem;
}

/* Show .details on top of image */
#movies a {
    position: relative;
}
#movies a .details {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: grid;
    place-content: center;
    align-content: center;
    background: var(--second-bg);
    opacity: 0;
    color: var(--default-text);
    transition: all .5s;
}

#movies a:hover .details {
    opacity: 0.7;
}