/* Mobile first: base rules target phones; min-width queries add tablet and desktop. */

/* Colours taken from rnne.no. */
:root {
    --page: #f3f6f6;
    --surface: #ffffff;
    --text: #4c5253;
    --heading: #101218;
    --header: #107fff;
    --nav: #1c244b;
    --link: #324a6d;
    --accent: #2fc1ff;
    --accent-hover: #08acf2;
    --on-accent: #131316;
    --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
    --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

body {
    margin: 0;
    background: var(--page);
    color: var(--text);
    font: 1.0625rem/1.6 var(--sans);
}

img { display: block; max-width: 100%; height: auto; }

h1, h2, h3 { color: var(--heading); font-family: var(--serif); line-height: 1.2; font-weight: 600; }
h1 { font-size: 2rem; margin: 0 0 .75rem; }
h2 { font-size: 1.5rem; margin: 2rem 0 .75rem; }

a { color: var(--link); }
:focus-visible { outline: 3px solid var(--heading); outline-offset: 2px; }

.container { width: 100%; max-width: 68rem; margin-inline: auto; padding-inline: 1.25rem; }

.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 1rem; top: 1rem; z-index: 20; background: var(--surface); padding: .5rem 1rem; }

.button {
    display: inline-block;
    padding: .6rem 1.25rem;
    border-radius: .375rem;
    background: var(--accent);
    color: var(--on-accent);
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
}
.button:hover { background: var(--accent-hover); }

/* Header and menu */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--header);
    color: var(--nav);
}
.site-header__bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .5rem .3rem;
    max-width: 68rem;
    margin-inline: auto;
    padding: .6rem .75rem;
}
.brand {
    margin-right: auto;
    color: var(--nav);
    font: 600 .95rem var(--serif);
    text-decoration: none;
    white-space: nowrap;
}
.site-header__book { padding: .4rem .45rem; font-size: .95rem; }

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}

.nav-toggle { position: absolute; opacity: 0; width: 1px; height: 1px; }

/* Three bars drawn in CSS, so the icon needs no image or JavaScript. */
.nav-toggle-label {
    width: 1.75rem;
    height: 2.25rem;
    cursor: pointer;
    background:
        linear-gradient(var(--nav), var(--nav)) center calc(50% - .4rem) / 1.4rem 2px no-repeat,
        linear-gradient(var(--nav), var(--nav)) center / 1.4rem 2px no-repeat,
        linear-gradient(var(--nav), var(--nav)) center calc(50% + .4rem) / 1.4rem 2px no-repeat;
}
.nav-toggle:focus-visible + .nav-toggle-label { outline: 3px solid var(--heading); outline-offset: 2px; }

.site-nav { display: none; width: 100%; padding-bottom: .5rem; }
.nav-toggle:checked ~ .site-nav { display: block; }

.site-nav ul { list-style: none; margin: 0; padding: 0; }
.site-nav__links a {
    display: block;
    padding: .6rem 0;
    color: var(--nav);
    text-decoration: none;
}
.site-nav a[aria-current="page"] { font-weight: 700; text-decoration: underline; }

/* Pill toggle, same type as on liverbirds-stavanger.no. */
.lang-switch {
    display: inline-flex;
    flex: none;
    margin: 0;
    padding: 0;
    list-style: none;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--accent);
    border-radius: 999px;
}
.lang-switch a {
    display: block;
    padding: .25rem .45rem;
    color: var(--nav);
    font-size: .85rem;
    font-weight: 600;
    text-decoration: none;
}
.lang-switch a:focus-visible { outline-offset: -3px; }
.lang-switch a[aria-current] { background: var(--accent); color: var(--on-accent); }

/* Home */
.hero__image { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.hero__text { padding-block: 1.75rem; }
.hero__lead { font-size: 1.15rem; margin: 0 0 1.25rem; }
.hero__note { margin: 1rem 0 0; font-size: .95rem; }

.prose { padding-block: 1rem 2.5rem; }
.prose > *:first-child { margin-top: 0; }
.page { padding-top: 2rem; }
.prose > p, .prose > ul { max-width: 46rem; }
.prose li + li { margin-top: .25rem; }

.photo { width: 100%; max-width: 46rem; border-radius: .5rem; }

/* Photo cards, written in the Markdown files as ::: card inside :::: cards */
.cards { display: grid; gap: 1.25rem; margin-block: 1.25rem 2rem; }
.card { overflow: hidden; background: var(--surface); border-radius: .5rem; }
.card > * { margin-inline: 1rem; }
.card > p:first-child { margin: 0; }
.card img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.card h3 { margin-block: .9rem .4rem; font-size: 1.2rem; }
.card h3 a { color: inherit; text-decoration: none; }
.card p, .card ul { margin-block: 0 .75rem; font-size: 1rem; }
.card ul { padding-left: 1.1rem; }
.card > :last-child:not(:first-child) { margin-bottom: 1rem; }

/* Gallery, written in the Markdown files as ::: gallery */
.gallery > p { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem; max-width: none; margin: 0 0 1.5rem; }
.gallery a { display: block; }
.gallery img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: .25rem; }

.cta-band { background: var(--header); padding-block: 2.5rem; text-align: center; }
.cta-band h2 { margin: 0 0 1.25rem; color: #fff; }

.site-footer { padding-block: 2rem; background: var(--surface); font-size: .95rem; }
.site-footer p { margin: 0; }
.site-footer__name { color: var(--heading); font: 600 1.1rem var(--serif); }

/* Normal phones and up: room for a larger header */
@media (min-width: 23.4rem) {
    .site-header__bar { gap: .5rem .4rem; padding-inline: 1.25rem .75rem; }
    .brand { font-size: 1.2rem; }
    .site-header__book { padding-inline: .7rem; font-size: 1rem; }
}

/* Tablet */
@media (min-width: 48rem) {
    .cards { grid-template-columns: repeat(2, 1fr); }
    .gallery > p { grid-template-columns: repeat(3, 1fr); }
    .site-header__bar { gap: .5rem .75rem; padding-inline: 1.25rem; }
    .brand { font-size: 1.3rem; }
    .lang-switch a { padding-inline: .7rem; }
    h1 { font-size: 2.6rem; }
    .hero__image { aspect-ratio: 16 / 7; }
    .hero__text { max-width: 46rem; margin-inline: 0; margin-left: max(0px, calc((100% - 68rem) / 2)); }
}

/* Desktop: the menu is always visible on one row */
@media (min-width: 60rem) {
    .cards { grid-template-columns: repeat(3, 1fr); }
    .gallery > p { grid-template-columns: repeat(4, 1fr); }
    .nav-toggle, .nav-toggle-label { display: none; }
    .site-header__bar { flex-wrap: nowrap; gap: 1.5rem; }
    .brand { margin-right: 0; }
    .site-nav, .nav-toggle:checked ~ .site-nav {
        display: flex;
        align-items: center;
        flex: 1;
        order: 1;
        width: auto;
        padding: 0;
    }
    .lang-switch { order: 2; }
    .site-header__book { order: 3; }
    .site-nav__links { display: flex; gap: 1.25rem; }
    .site-nav__links a { padding: .25rem 0; }
}