@font-face {
    font-family: "Fredoka";
    src: url("home/Fredoka-VariableFont_wdth,wght.woff2") format("woff2");
    font-display: swap;
}

*, *::before, *::after {
    box-sizing: border-box;
}

:root {
    font-family: 'Fredoka', sans-serif;
    line-height: 1.6;
    scroll-behavior: smooth;

    --bg: oklch(0.99 0.003 325);
    --primary: oklch(0.25 0.01 325);

    color: var(--primary);
    background-color: var(--bg);
}

body {
    margin: 0;
}

.container {
    max-width: 80rem;
    margin-inline: auto;
    padding-inline: 1rem;
}

.row {
    display: flex;
    gap: 2rem;
}

.row > div {
    border: 1px dashed oklch(0.4 0.02 325);
    padding: 1rem;
}

.row > div:first-child {
    flex: 2;
}

.row > div:last-child {
    flex: 1;
}

.nav-oefening ul {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-oefening li:first-child {
    margin-inline-end: auto;
}

#Nav .nav-oefening a {
    display: inline-block;
    padding-block: 1rem;
    padding-inline: 2rem;
    text-decoration: none;
    background-color: transparent;
    color: var(--primary);
    transition: background-color .25s ease, color .25s ease;
}

#Nav .nav-oefening li:not(:first-child) > a {
    background-color: #e30606;
    color: #fff;
}

#Nav .nav-oefening li:not(:first-child) > a:hover,
#Nav .nav-oefening li:not(:first-child) > a:focus-visible {
    background-color: #fff;
    color: #e30606;
}

#Nav .nav-oefening li:first-child > a {
    background-color: transparent;
    color: var(--primary);
    font-weight: 600;
}

header {
    color: var(--bg);
    background-color: var(--primary);
}

header nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    margin: 0;
    margin-inline-start: -2rem;
}

header nav a {
    display: inline-block;
    padding-block: 1rem;
    padding-inline: 2rem;
    text-decoration: none;
    color: inherit;
    transition: transform .2s ease-in-out, color .2s ease-in-out;
}

header nav a:hover,
header nav a:focus-visible {
    transform: scale(1.2);
    color: oklch(0.535 0.219 29.234);
}

main nav {
    --text: oklch(0.99 0.003 325);
    --bg: oklch(0.535 0.219 29.234);
}

main nav a {
    color: var(--text);
    background-color: var(--bg);
    transition: background-color .2s ease-in-out, color .2s ease-in-out;
}

main nav a:hover,
main nav a:focus-visible {
    background-color: #fff;
    color: var(--bg);
}

main nav li:first-child {
    margin-inline-end: auto;
}

.cards {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.cards li {
    flex: 1 1 calc(25% - 2rem);
    position: relative;
    overflow: hidden;
    border-radius: .5rem;
    background: oklch(0.97 0.01 325);
    box-shadow: 0 0 .2rem oklch(0 0 0 / .2), 0 0 2rem oklch(0 0 0 / .1);
    transition: transform .25s ease, box-shadow .25s ease;
}

.cards li:hover,
.cards li:focus-within {
    transform: translateY(-4px);
    box-shadow: 0 0 .3rem oklch(0 0 0 / .25), 0 0 2.5rem oklch(0 0 0 / .15);
}

.cards img {
    display: block;
    width: 100%;
    height: 150px;
    object-fit: cover;
    transition: transform .4s ease, filter .4s ease;
}

.cards li:hover img,
.cards li:focus-within img {
    transform: scale(1.03);
    filter: grayscale(100%);
}

.cards .content {
    padding: 1rem;
}

.cards h3 {
    margin: 0 0 .5rem;
}

.cards p {
    margin: 0 0 .75rem;
}

.cards a:not(.overlay-link) {
    color: blue;
    text-decoration: underline;
    transition: color .25s ease;
}

.cards a:not(.overlay-link):hover,
.cards a:not(.overlay-link):focus-visible {
    color: darkblue;
}

.cards .overlay-link {
    position: absolute;
    inset: 0;
    text-indent: -9999px;
    overflow: hidden;
}