:root {
    --theme-bg-1: var(--ds-bg-1, hsl(240 0% 4%));
    --theme-bg-2: var(--ds-bg-2, hsl(240 0% 10%));
    --theme-bg-3: var(--ds-bg-3, hsla(32 0% 44% / 0.18));
    --theme-bg-4: var(--ds-bg-4, hsla(199 0% 48% / 0.16));
    --theme-surface: var(--ds-surface, rgba(19, 22, 27, 0.72));
    --theme-border: var(--ds-border);
    --theme-ink: var(--ds-ink, rgba(250, 250, 249, 0.96));
    --theme-muted: var(--ds-muted, rgba(220, 221, 226, 0.76));
    --theme-accent: var(--color-primary-hex, #d97706);
    --theme-accent-alt: var(--color-secondary-hex, #0ea5e9);
    --theme-surface-strong: color-mix(in srgb, var(--theme-surface) 90%, var(--theme-bg-1) 10%);
    --theme-surface-soft: color-mix(in srgb, var(--theme-surface) 72%, transparent);
    --theme-header-bg: color-mix(in srgb, var(--theme-bg-1) 62%, var(--theme-surface) 38%);
    --theme-skip-bg: color-mix(in srgb, var(--theme-surface) 92%, var(--theme-bg-1) 8%);
    /* --theme-shadow: var(
        --ds-shadow,
        0 22px 44px rgba(0, 0, 0, 0.34),
        0 8px 18px rgba(0, 0, 0, 0.18)
    ); */
    --theme-shadow: none;
    --layout-header-height: calc(var(--rhythm, 1.25rem) * 4);
    --layout-shell-max: 132rem;
    --layout-main-width: clamp(80ch, 78vw, 100ch);
    --layout-aside-width: 18rem;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    /* background:
        radial-gradient(circle at top left, var(--theme-bg-3), transparent 30%),
        radial-gradient(circle at bottom right, var(--theme-bg-4), transparent 28%),
        linear-gradient(135deg, var(--theme-bg-1), var(--theme-bg-2)); */
    color: var(--theme-ink);
    scroll-padding-top: calc(var(--layout-header-height) + var(--rhythm, 1.25rem));
}

html[data-color-theme="light"],
html[data-color-theme="mono"] {
    color-scheme: light;
}

html[data-color-theme="dark"],
html[data-color-theme="contrast"] {
    color-scheme: dark;
}

html[data-color-theme="mono"] {
    background: white !important;
}

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    grid-template-rows: auto 1fr auto;
    background: transparent;
    color: var(--theme-ink);
    font-size: var(--font-body, 1rem);
    line-height: var(--line-height-body, 1.5);
    font-family: "Barlow", system-ui, sans-serif;
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: auto;
    width: 42vmax;
    height: 42vmax;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.3;
    pointer-events: none;
    z-index: -1;
}

body::before {
    top: -12vmax;
    right: -10vmax;
    background: color-mix(in srgb, var(--theme-accent) 22%, transparent);
}

body::after {
    bottom: -18vmax;
    left: -12vmax;
    background: color-mix(in srgb, var(--theme-accent-alt) 18%, transparent);
}

html[data-color-theme="mono"] body::before,
html[data-color-theme="mono"] body::after {
    display: none;
}

a {
    color: inherit;
}

.site-skiplinks {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1200;
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem;
}

.site-skiplinks a {
    transform: translateY(-180%);
    transition: transform 0.18s ease;
    border-radius: 999px;
    padding: 0.5rem 0.85rem;
    background: var(--theme-skip-bg);
    color: var(--theme-ink);
    text-decoration: none;
    box-shadow: var(--theme-shadow);
}

.site-skiplinks a:focus-visible {
    transform: translateY(0);
    outline: 2px solid var(--theme-accent);
    outline-offset: 2px;
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    border-bottom: 1px solid var(--theme-border);
    background: color-mix(in srgb, var(--theme-header-bg) 82%, transparent);
    backdrop-filter: blur(22px);
}

.site-header__inner {
    width: min(calc(100% - (var(--outer-margin, 1rem) * 2)), var(--layout-shell-max));
    min-height: var(--layout-header-height);
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--rhythm, 1.25rem);
    padding-inline: var(--outer-margin, 1rem);
}

.site-header__brand {
    font-size: var(--font-h4, 1rem);
    font-weight: 700;
    text-decoration: none;
}

.site-header__meta {
    margin: 0;
    color: var(--theme-muted);
    font-size: var(--font-small, 0.875rem);
}

.page-shell {
    width: min(calc(100% - (var(--outer-margin, 1rem) * 2)), var(--layout-shell-max));
    margin-inline: auto;
    padding: calc(var(--layout-header-height) + (var(--rhythm, 1.25rem) * 1.5))
        var(--outer-margin, 1rem) calc(var(--rhythm, 1.25rem) * 2);
    display: grid;
    grid-template-columns: minmax(0, var(--layout-aside-width)) minmax(0, var(--layout-main-width));
    gap: var(--gutter, 2rem);
    align-items: start;
}

.page-aside {
    position: sticky;
    top: calc(var(--layout-header-height) + var(--rhythm, 1.25rem));
    align-self: start;
}

.page-toc__details {
    border: 1px solid var(--theme-border);
    border-radius: 0.125rem;
    background: var(--theme-surface);
    /* box-shadow: var(--theme-shadow); */
    overflow: clip;
}

.page-toc__summary {
    cursor: pointer;
    list-style: none;
    padding: calc(var(--rhythm, 1.25rem) * 0.75) var(--rhythm, 1.25rem);
    font-size: var(--font-small, 0.875rem);
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.page-toc__summary::-webkit-details-marker {
    display: none;
}

.page-toc__nav {
    display: grid;
    gap: 0.2rem;
    padding: 0 var(--rhythm, 1.25rem) var(--rhythm, 1.25rem);
}

.page-toc__link {
    display: block;
    border-radius: 0.7rem;
    padding: 0.5rem 0.7rem;
    color: var(--theme-muted);
    text-decoration: none;
}

.page-toc__link:hover,
.page-toc__link:focus-visible {
    background: color-mix(in srgb, var(--theme-surface-strong) 80%, transparent);
    color: var(--theme-ink);
    outline: none;
}

.page-toc__link[data-level="2"] {
    padding-inline-start: 1rem;
}

.page-toc__link[data-level="3"] {
    padding-inline-start: 1.4rem;
}

main {
    inline-size: min(100%, var(--layout-main-width));
    max-inline-size: 100ch;
    justify-self: center;
}

.page-panel {
    border: 1px solid var(--theme-border);
    border-radius: 0.125rem;
    background: var(--theme-surface-strong);
    color: var(--theme-ink);
    /* box-shadow: var(--theme-shadow); */
    padding: min(4vw, calc(var(--rhythm, 1.25rem) * 2));
}

.page-panel > :first-child {
    margin-top: 0;
}

.page-panel > :last-child {
    margin-bottom: 0;
}

.site-footer {
    width: min(calc(100% - (var(--outer-margin, 1rem) * 2)), var(--layout-shell-max));
    margin: auto auto 0;
    padding: var(--rhythm, 1.25rem) var(--outer-margin, 1rem) calc(var(--rhythm, 1.25rem) * 1.5);
    color: var(--theme-muted);
    font-size: var(--font-small, 0.875rem);
}

@media (max-width: 72rem) {
    .page-shell {
        grid-template-columns: 1fr;
    }

    .page-aside {
        position: relative;
        top: auto;
        order: -1;
    }

    main {
        inline-size: 100%;
    }
}

@media (max-width: 48rem) {
    .site-header__inner {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        padding-block: 0.8rem;
    }

    .page-shell {
        padding-top: calc(var(--layout-header-height) + (var(--rhythm, 1.25rem) * 2.25));
    }
}

/* Meine typografischen Entscheidungen */
h1,
h2 {
    font-weight: 400;
}