:root,
html[data-tema="lys"] {
    --bg: #fff;
    --fg: #000;
    --lenke: #00f;
    --lenke-besokt: #551a8b;
    --kant: #999;
    --dempet: #555;
    --rad-pause: #f2f2f2;
}

html[data-tema="mørk"] {
    --bg: #15151f;
    --fg: #e6e6eb;
    --lenke: #8ab4ff;
    --lenke-besokt: #b8a0ff;
    --kant: #3a3a4a;
    --dempet: #9a9aa8;
    --rad-pause: #1e1e2a;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
    color: var(--fg);
    background: var(--bg);
    max-width: 780px;
    margin: 0 auto;
    padding: 1em 1.5em 3em;
    line-height: 1.45;
    overflow-wrap: break-word;
    hyphens: auto;
}

header {
    --h1-storrelse: 2em;
    --fane-storrelse: 1.2em;
    --logo-ekstra: 1.9em;
    position: relative;
    border-bottom: 1px solid var(--kant);
    padding-bottom: 0.5em;
    margin-bottom: 1.5em;
}

.tema-velger {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    gap: 0.25em;
}

.tema-velger button {
    font: inherit;
    font-size: 0.85em;
    cursor: pointer;
    color: var(--fg);
    background: transparent;
    border: 1px solid var(--kant);
    border-radius: 3px;
    padding: 0.15em 0.6em;
}

.tema-velger button[aria-pressed="true"] {
    font-weight: bold;
    border-color: var(--fg);
}

.stjerne {
    --stjerne-rot: -12deg;
    position: absolute;
    top: 0;
    right: 1em;
    width: 90px;
    height: 90px;
    padding: 0;
    border: 0;
    background: none;
    cursor: pointer;
    transform: translateY(-50%) rotate(var(--stjerne-rot));
    transition: transform 0.15s ease;
    filter: drop-shadow(1px 2px 3px rgba(0, 0, 0, 0.35));
    z-index: 10;
}

.stjerne img {
    display: block;
    width: 100%;
    height: 100%;
}

.stjerne:hover,
.stjerne:focus-visible {
    transform: translateY(-50%) rotate(var(--stjerne-rot)) scale(1.08);
}

.header-topp {
    display: flex;
    align-items: center;
    gap: 0.8em;
    padding-top: 0.5em;
}

.header-tekst {
    min-width: 0;
    align-self: flex-end;
}

.header-logo {
    flex: 0 0 auto;
    height: calc(var(--h1-storrelse) * 1.1 + var(--h1-storrelse) * 0.1 + var(--fane-storrelse) * 1.2 + var(--logo-ekstra));
    width: auto;
}

.header-logo-mørk {
    display: none;
}

html[data-tema="mørk"] .header-logo-lys,
html[data-tema="nostalgisk"] .header-logo-lys {
    display: none;
}

html[data-tema="mørk"] .header-logo-mørk,
html[data-tema="nostalgisk"] .header-logo-mørk {
    display: block;
}

header h1 {
    font-size: var(--h1-storrelse);
    line-height: 1.1;
    margin: 0 0 0.1em;
    font-weight: bold;
}

header h1 a {
    color: var(--fg);
    text-decoration: none;
}

html:not([data-tema="nostalgisk"]) nav {
    font-size: var(--fane-storrelse);
    line-height: 1.2;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

nav li {
    display: inline;
    margin-right: 1em;
}

a {
    color: var(--lenke);
    text-decoration: underline;
}

a:visited {
    color: var(--lenke-besokt);
}

main h1 {
    font-size: 1.25em;
    margin-top: 0;
    margin-bottom: 0.5em;
}

.logo {
    display: block;
    width: 100px;
    max-width: 100%;
    height: auto;
    margin: 1.5em 0;
}

html[data-tema="mørk"] .logo,
html[data-tema="nostalgisk"] .logo {
    filter: invert(1);
}

h2 {
    font-size: 1.15em;
    margin-top: 1.5em;
    margin-bottom: 0.4em;
}

h3 {
    font-size: 1em;
    margin-top: 1.2em;
    margin-bottom: 0.3em;
}

table {
    border-collapse: collapse;
    margin: 0.5em 0 1em;
    max-width: 100%;
}

th,
td {
    text-align: left;
    padding: 0.2em 1em 0.2em 0.5em;
    vertical-align: top;
}

tr.pause {
    background: var(--rad-pause);
}

table.sesjon tbody tr:nth-child(even) {
    background: var(--rad-pause);
}

/* Sesjonstabellene får like kolonnebredder, så kolonnene står rett under hverandre */
table.sesjon {
    width: 100%;
    table-layout: fixed;
}

table.sesjon th:first-child {
    width: 14%;
}

/* Forfatterne står i kursiv etter tittelen i markdown, og vises på egen linje under */
table.sesjon td em {
    display: block;
    margin-top: 0.15em;
    font-size: 0.9em;
    color: var(--dempet);
}

table.sesjon td {
    padding-top: 0.4em;
    padding-bottom: 0.4em;
}

th {
    font-weight: bold;
    border-bottom: 1px solid var(--kant);
}

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

footer {
    position: relative;
    border-top: 1px solid var(--kant);
    margin-top: 2.5em;
    padding-top: 0.5em;
    font-size: 0.85em;
    color: var(--dempet);
}

.aktiv {
    font-weight: bold;
    text-decoration: none;
    color: var(--fg);
}

html[data-tema="nostalgisk"] body {
    font-family: "Comic Sans MS", "Times New Roman", cursive, serif;
    font-size: 16px;
    color: #ffff00;
    background-color: #000033;
    background-image:
        radial-gradient(1.5px 1.5px at 30px 50px, white, transparent),
        radial-gradient(1px 1px at 90px 130px, white, transparent),
        radial-gradient(1px 1px at 160px 40px, #aaccff, transparent),
        radial-gradient(1.5px 1.5px at 200px 180px, white, transparent),
        radial-gradient(1px 1px at 70px 230px, white, transparent),
        radial-gradient(1px 1px at 250px 90px, #ffffaa, transparent);
    background-size: 290px 270px;
    max-width: 760px;
    padding: 1em;
    line-height: 1.5;
    text-align: center;
}

html[data-tema="nostalgisk"] header {
    background: rgb(0, 0, 102);
    color: #000080;
    border: 4px ridge #ffffff;
    border-bottom: 4px ridge #ffffff;
    padding: 0.8em;
    margin-bottom: 1.5em;
}

html[data-tema="nostalgisk"] .tema-velger {
    top: 0.5em;
    right: 0.5em;
}

html[data-tema="nostalgisk"] .tema-velger button {
    background: #c0c0c0;
    color: #000080;
    border: 3px outset #ffffff;
    border-radius: 0;
    font-weight: bold;
}

html[data-tema="nostalgisk"] .tema-velger button[aria-pressed="true"] {
    border-style: inset;
}

html[data-tema="nostalgisk"] header h1 {
    font-size: 2em;
    line-height: 1.45;
    margin: 0.5em 0 0.15em;
    color: #ff00ff;
    text-shadow: 2px 2px 0 #00ffff, -1px -1px 0 #ffff00;
    letter-spacing: 1px;
}

html[data-tema="nostalgisk"] header h1 a {
    color: #ff00ff;
}

html[data-tema="nostalgisk"] .header-topp {
    flex-wrap: wrap;
    padding-top: 1.2em;
    text-align: left;
}

html[data-tema="nostalgisk"] .header-tekst {
    display: contents;
}

html[data-tema="nostalgisk"] .header-topp h1 {
    flex: 1 1 0;
    min-width: 0;
    align-self: flex-end;
}

html[data-tema="nostalgisk"] .header-topp nav {
    flex-basis: 100%;
}

html[data-tema="nostalgisk"] .header-logo {
    height: calc(2em * 1.45 + 2em);
}

html[data-tema="nostalgisk"] nav li {
    display: inline-block;
    margin: 0.2em;
}

html[data-tema="nostalgisk"] nav a,
html[data-tema="nostalgisk"] nav a:visited {
    display: inline-block;
    background: #c0c0c0;
    color: #000080;
    border: 3px outset #ffffff;
    padding: 0.25em 0.7em;
    text-decoration: none;
    font-weight: bold;
}

html[data-tema="nostalgisk"] nav a:hover {
    background: #000080;
    color: #ffffff;
}

html[data-tema="nostalgisk"] nav a:active {
    border-style: inset;
}

html[data-tema="nostalgisk"] main {
    background: #000066;
    border: 4px ridge #ff00ff;
    padding: 1em 1.5em;
    text-align: center;
}

html[data-tema="nostalgisk"] main ul,
html[data-tema="nostalgisk"] main ol {
    list-style-position: inside;
    padding-left: 0;
}

html[data-tema="nostalgisk"] a {
    color: #00ffff;
}

html[data-tema="nostalgisk"] a:visited {
    color: #ff99ff;
}

html[data-tema="nostalgisk"] a:hover {
    color: #ffffff;
    background: #ff00ff;
}

html[data-tema="nostalgisk"] main h1 {
    font-size: 1.7em;
    color: #00ff00;
    text-align: center;
    text-decoration: underline overline;
}

html[data-tema="nostalgisk"] h2 {
    font-size: 1.35em;
    color: #ffff00;
}

html[data-tema="nostalgisk"] h3 {
    font-size: 1.1em;
    color: #00ff00;
}

html[data-tema="nostalgisk"] table {
    margin: 1em auto;
    border: 4px ridge #00ffff;
    background: #000033;
}

html[data-tema="nostalgisk"] th,
html[data-tema="nostalgisk"] td {
    padding: 0.3em 1em;
    border: 2px groove #6666cc;
    color: #ffffff;
    text-align: left;
}

html[data-tema="nostalgisk"] th {
    background: #330066;
    color: #ffff00;
}

html[data-tema="nostalgisk"] table.sesjon td em {
    color: #aaccff;
}

html[data-tema="nostalgisk"] tr.pause,
html[data-tema="nostalgisk"] table.sesjon tbody tr:nth-child(even) {
    background: #1a1a4d;
}

html[data-tema="nostalgisk"] footer {
    background: #c0c0c0;
    color: #000080;
    border: 4px ridge #ffffff;
    margin-top: 1.5em;
    padding: 0.6em;
    font-size: 0.9em;
    font-weight: bold;
    text-align: center;
}

html[data-tema="nostalgisk"] .aktiv {
    background: #ffff00 !important;
    color: #aa0000 !important;
    border-style: inset;
}

html[data-tema="nostalgisk"] body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0.6;
    --regn: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='200'%20height='200'%20viewBox='0%200%20200%20200'%3E%3Cpath%20fill='%23ff7bd5'%20d='M30%2028c-6-10-22-7-22%205%200%209%2014%2017%2022%2023%208-6%2022-14%2022-23%200-12-16-15-22-5z'/%3E%3Cpath%20fill='%23ffd24d'%20d='M150%2018l5%2012%2013%201-10%209%203%2013-11-7-11%207%203-13-10-9%2013-1z'/%3E%3Cpath%20fill='%237be0ff'%20d='M120%20120c-5-8-18-6-18%204%200%207%2011%2014%2018%2018%207-4%2018-11%2018-18%200-10-13-12-18-4z'/%3E%3Cpath%20fill='%23fff07b'%20d='M50%20150l4%2010%2011%201-8%207%202%2011-9-6-9%206%202-11-8-7%2011-1z'/%3E%3C/svg%3E");
    background-image: var(--regn), var(--regn), var(--regn);
    background-repeat: repeat;
    background-size: 80px 80px, 120px 120px, 100px 100px;
}

@media (prefers-reduced-motion: no-preference) {
    html[data-tema="nostalgisk"] body::before {
        animation: regn 3s linear infinite;
    }
}

@keyframes regn {
    from {
        background-position: 0 0, 0 0, 0 0;
    }

    to {
        background-position: 0 160px, 120px 240px, -100px 300px;
    }
}