/* slides.fsx.one — Übersicht und Erklärung zur Barrierefreiheit (neutral, hell/dunkel) */

:root {
  --color-bg: #fafaf7;
  --color-surface: #ffffff;
  --color-text: #1b1b1f;
  --color-muted: #50505a;      /* 7,6:1 auf --color-bg */
  --color-border: #d9d9d2;
  --color-link: #0b57d0;       /* 6,1:1 auf --color-bg */
  --color-focus: #0b57d0;
  --radius: 10px;
  --space: 1rem;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #16161a;
    --color-surface: #1f1f25;
    --color-text: #ececf1;
    --color-muted: #b4b4be;    /* 9,0:1 auf --color-bg */
    --color-border: #3a3a44;
    --color-link: #8ab4f8;     /* 8,6:1 auf --color-bg */
    --color-focus: #8ab4f8;
    color-scheme: dark;
  }
}

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

html,
body {
  overflow-x: hidden;
  max-width: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font: 1.0625rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.wrap {
  width: 100%;
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 calc(var(--space) * 1.25);
}

a {
  color: var(--color-link);
  text-underline-offset: 0.15em;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space);
  top: -3rem;
  padding: 0.5rem 0.875rem;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  z-index: 10;
}

.skip-link:focus {
  top: var(--space);
}

.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space) 0;
}

.brand {
  color: var(--color-text);
  font-weight: 650;
  text-decoration: none;
}

main {
  padding-top: calc(var(--space) * 2.5);
  padding-bottom: calc(var(--space) * 3);
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  line-height: 1.2;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.5rem;
}

.lead {
  color: var(--color-muted);
  margin: 0 0 2rem;
}

.decks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.deck {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.deck__link {
  font-size: 1.125rem;
  font-weight: 600;
}

.deck__meta {
  margin: 0.25rem 0 0;
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: calc(var(--space) * 1.5) 0 calc(var(--space) * 2);
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space);
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.footer-links a {
  color: var(--color-muted);
}

.footer-links a:hover {
  color: var(--color-text);
}

.wcag-badge {
  display: inline-flex;
  color: var(--color-muted);
  text-decoration: none;
  border-radius: 6px;
}

.wcag-badge:hover,
.wcag-badge:focus-visible {
  color: var(--color-text);
}

.wcag-badge__svg {
  display: block;
  height: auto;
}

.wcag-badge--compact .wcag-badge__svg {
  width: 200px;
  max-width: 100%;
}

.prose ul {
  padding-left: 1.25rem;
}

.prose li + li {
  margin-top: 0.375rem;
}