/* base.css — technisches Grundgerüst für alle /redesign-Vorschauen.
   Themes überschreiben NUR die :root-Variablen + eigene Sektions-Styles. */
:root {
  --bg: #ffffff;
  --bg-alt: #f4f4f5;
  --text: #18181b;
  --text-dim: #52525b;
  --accent: #2563eb;
  --accent-contrast: #ffffff;
  --display: system-ui, 'Segoe UI', Roboto, sans-serif;
  --body: system-ui, 'Segoe UI', Roboto, sans-serif;
  --radius: 1rem;
  --pad: clamp(1rem, 4vw, 2.5rem);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }

/* ---------- A11y ---------- */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: var(--accent-contrast);
  padding: .75rem 1.25rem; font-weight: 700;
}
.skip-link:focus { left: 0; }
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 2px;
}
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- Layout ---------- */
.container { max-width: 72rem; margin-inline: auto; padding-inline: var(--pad); }
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section--alt { background: var(--bg-alt); }
.section-kicker {
  font-weight: 800; letter-spacing: .2em; text-transform: uppercase;
  font-size: .8rem; margin-bottom: .5rem; color: var(--accent);
}
.section-title { font-family: var(--display); font-size: clamp(2.2rem, 6vw, 4rem); line-height: 1.05; margin-bottom: 1rem; }

.grid { display: grid; gap: 1.5rem; }
@media (min-width: 700px) {
  .grid--2 { grid-template-columns: 1fr 1fr; }
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--text) 12%, transparent);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-block: .6rem; flex-wrap: wrap;
}
.logo {
  font-family: var(--display); font-size: 1.5rem; color: var(--text);
  text-decoration: none; display: inline-flex; align-items: center;
  gap: .5rem; min-height: 44px; font-weight: 800;
}
.site-nav ul { display: flex; list-style: none; gap: .25rem; flex-wrap: wrap; }
.site-nav a {
  display: inline-flex; align-items: center; min-height: 44px;
  padding: .35rem .8rem; color: var(--text-dim); text-decoration: none;
  font-weight: 600; font-size: .95rem; border-radius: 999px;
  transition: color .2s, background .2s;
}
.site-nav a:hover { color: var(--text); background: color-mix(in srgb, var(--text) 8%, transparent); }
.site-nav a.nav-cta { background: var(--accent); color: var(--accent-contrast); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: .8rem 2rem; border-radius: 999px;
  font-weight: 800; font-size: 1.05rem; text-decoration: none;
  transition: transform .15s, box-shadow .15s, background .2s;
}
.btn--primary { background: var(--accent); color: var(--accent-contrast); }
.btn--primary:hover { transform: translateY(-2px); }
.btn--ghost { border: 2px solid color-mix(in srgb, var(--text) 40%, transparent); color: var(--text); }
.btn--ghost:hover { border-color: var(--text); }

/* ---------- Bild-Hilfen ---------- */
.img-cover { width: 100%; height: 100%; object-fit: cover; }
.img-card { border-radius: var(--radius); overflow: hidden; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid color-mix(in srgb, var(--text) 12%, transparent);
  padding-block: 3rem 5.5rem;
}
.footer-grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 700px) { .footer-grid { grid-template-columns: repeat(3, 1fr); } }
.site-footer h2 { font-size: 1.05rem; margin-bottom: .6rem; text-transform: uppercase; letter-spacing: .1em; }
.site-footer p, .site-footer li { color: var(--text-dim); font-size: .95rem; }
.site-footer ul { list-style: none; }
.site-footer a { color: var(--text); text-underline-offset: 3px; }
.footer-legal {
  margin-top: 2.5rem; padding-top: 1.5rem;
  border-top: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  font-size: .85rem; color: var(--text-dim);
  display: flex; gap: 1.5rem; flex-wrap: wrap;
}

/* ---------- Entwurfs-Badge (Pflicht) ---------- */
.draft-badge {
  position: fixed; right: .9rem; bottom: .9rem; z-index: 60;
  background: color-mix(in srgb, var(--text) 92%, transparent);
  color: var(--bg); border-radius: 999px; padding: .45rem 1rem;
  font-size: .78rem; font-weight: 600; pointer-events: none;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}

/* ---------- Scroll-Reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }