/* ============================================================
   amplaio — Layout
   Section-Wrapper, Navigation, Footer, Sprachumschalter.
   Einbinden nach components.css (wegen .nav-cta, das .btn überschreibt).
   ============================================================ */

/* ---------- Layout ---------- */
.section {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(5rem, 12vh, 9rem) var(--pad);
}
[id] { scroll-margin-top: 88px; }
.section-head { max-width: 720px; margin-bottom: clamp(2.6rem, 6vw, 4.2rem); }
.section-head h2 {
  font-size: clamp(2.1rem, 5vw, 3.5rem);
  margin: 1.1rem 0 0;
}
.section-lead {
  color: var(--text-dim);
  font-size: clamp(1rem, 2vw, 1.18rem);
  margin-top: 1.1rem;
  max-width: 56ch;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease),
              -webkit-backdrop-filter 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(7, 11, 20, 0.72);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--border);
}
/* Rechtsseiten (Impressum/Datenschutz) haben keinen Hero — Nav dauerhaft opak */
body.legal-page .nav {
  background: rgba(7, 11, 20, 0.72);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--border);
}
.nav-inner {
  max-width: var(--maxw); margin-inline: auto;
  padding: 1rem var(--pad);
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem;
}
.brand { display: inline-flex; align-items: center; gap: 0.22rem; }
.brand-mark { width: 30px; height: 30px; display: block; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.32rem;
  letter-spacing: 0.06em;
  line-height: 1;
}
.brand-ai { color: var(--accent); position: relative; }
/* kleiner Trabant, der beim Hover die „ai" umkreist — wie der Mond im Logo */
.brand-ai::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 4px; height: 4px; margin: -2px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 6px var(--mint);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}
.brand:hover .brand-ai::after {
  opacity: 1;
  animation: ai-orbit 2.6s linear infinite;
}
@keyframes ai-orbit {
  from { transform: rotate(0deg)   translateX(15px) rotate(0deg); }
  to   { transform: rotate(360deg) translateX(15px) rotate(-360deg); }
}
@media (prefers-reduced-motion: reduce) {
  .brand-ai::after { display: none; }
}
.nav-links {
  display: flex; align-items: center; gap: 2rem;
}
.nav-links > a:not(.btn) {
  font-size: 0.94rem;
  color: var(--text-dim);
  position: relative;
  transition: color 0.25s var(--ease);
}
.nav-links > a:not(.btn)::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 0; height: 1.5px; background: var(--mint);
  transition: width 0.28s var(--ease);
}
.nav-links > a:not(.btn):hover { color: var(--text); }
.nav-links > a:not(.btn):hover::after { width: 100%; }
.nav-cta { padding: 0.66rem 1.25rem; font-size: 0.9rem; }

.nav-toggle {
  display: none; width: 42px; height: 42px;
  flex-direction: column; gap: 5px;
  align-items: center; justify-content: center;
  border: 1px solid var(--border-lit); border-radius: 10px;
}
.nav-toggle span {
  width: 18px; height: 2px; background: var(--text); border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.nav.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-deep);
  padding: clamp(3rem, 7vw, 5rem) 0 2rem;
}
.footer-inner {
  max-width: var(--maxw); margin-inline: auto;
  padding-inline: var(--pad);
  display: grid; grid-template-columns: 1.4fr 2fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border);
}
.footer-brand p {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-top: 1rem;
  max-width: 32ch;
}
.footer-cols {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.footer-col { display: grid; gap: 0.7rem; align-content: start; }
.footer-col h3 {
  font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 500;
  margin-bottom: 0.3rem;
}
.footer-col a {
  color: var(--text-dim); font-size: 0.92rem;
  transition: color 0.22s var(--ease);
  width: fit-content;
}
.footer-col a:hover { color: var(--mint); }
.footer-bottom {
  max-width: var(--maxw); margin-inline: auto;
  padding-inline: var(--pad);
  margin-top: 2rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.footer-bottom p { font-size: 0.82rem; color: var(--text-faint); }
.footer-bottom a {
  margin-left: 1rem; color: var(--text-dim);
  transition: color 0.2s var(--ease);
}
.footer-bottom a:hover { color: var(--mint); }
.footer-mono { font-family: var(--font-mono); letter-spacing: 0.08em; }

/* ---------- Language toggle ---------- */
.lang {
  display: inline-flex; align-items: center;
  border: 1px solid var(--border-lit);
  border-radius: 100px; overflow: hidden;
  font-family: var(--font-mono); font-size: 0.72rem;
}
.lang span, .lang a { padding: 0.4rem 0.72rem; letter-spacing: 0.06em; }
.lang .lang-on { background: var(--surface-3); color: var(--text); }
.lang .lang-alt { color: var(--text-faint); transition: color 0.2s var(--ease); }
.lang .lang-alt:hover { color: var(--text); }

/* ---------- Responsive ---------- */
/* Logo auf Desktop vergrößert */
@media (min-width: 941px) {
  .brand-mark { width: 40px; height: 40px; }
  .brand-name { font-size: 1.6rem; }
}

@media (max-width: 940px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    gap: 0.4rem;
    padding: 1rem var(--pad) 1.6rem;
    background: #090d18;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 32px 54px -22px rgba(0, 0, 0, 0.86);
    transform: translateY(-12px);
    opacity: 0; visibility: hidden;
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
  }
  .nav.nav-open .nav-links { opacity: 1; visibility: visible; transform: none; }
  .nav-links > a:not(.btn) { padding: 0.7rem 0; }
  .nav-cta { text-align: center; margin-top: 0.5rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .nav-links .lang { align-self: flex-start; margin: 0.3rem 0; }
}

@media (max-width: 560px) {
  .footer-cols { grid-template-columns: 1fr; gap: 1.8rem; }
  .footer-bottom { flex-direction: column; }
}

/* ============================================================
   Mobile-Performance — flüssigeres Scrollen auf kleinen Geräten
   backdrop-filter, mix-blend-mode und Endlos-Animationen sind
   auf mobilen GPUs teuer und müssen pro Scroll-Frame neu
   berechnet werden. Auf schmalen Viewports daher durch
   günstige, optisch nahezu gleiche Varianten ersetzt.
   Desktop bleibt unverändert.
   ============================================================ */
@media (max-width: 940px) {
  /* Nav: fixiertes blur() wird bei jedem Scroll-Frame neu gerastert */
  .nav.scrolled,
  body.legal-page .nav,
  body.career-page .nav {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background: rgba(7, 11, 20, 0.95);
  }

  /* Grain: mix-blend-mode auf fixierter Vollbild-Ebene erzwingt
     einen Compositing-Pass pro Frame — bei 4 % Deckkraft unnötig */
  .grain { display: none; }

  /* Auroras: große blur()-Flächen nicht mehr endlos animieren —
     bleiben als statischer Schimmer erhalten */
  .aurora { animation: none; will-change: auto; }

  /* Ghost-Button: backdrop-blur entlasten */
  .btn-ghost {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}