/* Reset + Typografie + Utilities */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;   /* verhindert horizontalen Scroll durch z.B. zoom-Effekte */
}
html { overflow-x: hidden; }
img, svg, video { max-width: 100%; height: auto; display: block; }
button { font: inherit; cursor: pointer; }
a { color: var(--c-primary); text-decoration: none; transition: color var(--fast) var(--ease); }
a:hover { color: var(--c-primary-soft); }
:focus-visible { outline: 3px solid var(--c-accent); outline-offset: 2px; border-radius: 4px; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--c-ink);
  line-height: var(--lh-tight);
  letter-spacing: -0.015em;
  margin: 0 0 var(--s-4);
  font-weight: 700;
}
h1 { font-size: clamp(2.25rem, 5vw, var(--fs-5xl)); letter-spacing: -0.025em; }
h2 { font-size: clamp(1.75rem, 4vw, var(--fs-3xl)); }
h3 { font-size: clamp(1.25rem, 2.4vw, var(--fs-xl)); }
h4 { font-size: var(--fs-lg); }
p { margin: 0 0 var(--s-4); }
p.lead { font-size: var(--fs-lg); color: var(--c-ink-soft); line-height: var(--lh-relax); }

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

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--s-5); }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 var(--s-5); }

.section { padding: var(--section-py) 0; position: relative; }
.section.alt { background: var(--c-bg-alt); }
.section.dark { background: var(--c-primary); color: #fff; }
.section.dark h1, .section.dark h2, .section.dark h3 { color: #fff; }
.section.dark p { color: rgba(255,255,255,0.86); }

.eyebrow {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--c-primary-soft);
  background: var(--c-primary-50);
  padding: 6px 12px;
  border-radius: var(--r-full);
  margin-bottom: var(--s-4);
}

.section-head { text-align: center; max-width: 760px; margin: 0 auto var(--s-7); }
.section-head.left { text-align: left; margin-left: 0; }

.muted { color: var(--c-muted); }
.center { text-align: center; }
.hl-red { color: var(--c-danger); }
.hide-mobile { }
.hide-desktop { display: none; }
@media (max-width: 768px) {
  .hide-mobile { display: none; }
  .hide-desktop { display: revert; }
}

.grid { display: grid; gap: var(--s-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.flex { display: flex; gap: var(--s-4); align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.flex-between { display: flex; justify-content: space-between; align-items: center; gap: var(--s-4); }

/* Balanced-Grid: 3-Col-Layout, aber letzte Zeile zentriert bei ungerader Card-Anzahl */
.grid-balanced {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: var(--s-5);
}
.grid-balanced > * {
  flex: 0 1 calc((100% - 2 * var(--s-5)) / 3);
  min-width: 280px;
  max-width: calc((100% - 2 * var(--s-5)) / 3);
}
@media (max-width: 960px) {
  .grid-balanced > * { flex-basis: calc((100% - var(--s-5)) / 2); max-width: calc((100% - var(--s-5)) / 2); }
}
@media (max-width: 600px) {
  .grid-balanced > * { flex-basis: 100%; max-width: 100%; }
}

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

/* Honeypot — visuell + screenreader versteckt */
.tb-hp {
  position: absolute !important; left: -10000px !important;
  width: 1px !important; height: 1px !important; opacity: 0 !important;
  pointer-events: none;
}

/* Page-scroll progress (top) */
.scroll-progress {
  position: fixed; top: 0; left: 0; width: 0; height: 3px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-primary-soft));
  z-index: 999; transition: width 80ms linear;
}

/* Fade-in via IntersectionObserver.
   Wichtig: opacity:0 nur, wenn JS aktiv (no-js wird sofort von Inline-Script entfernt).
   Failsafe: nach 4s wird der Inhalt erzwungen sichtbar, falls IO nie triggert. */
.fade-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 380ms var(--ease), transform 380ms var(--ease);
  animation: tb-failsafe-show 0s 4s forwards;
}
.fade-in.in { opacity: 1; transform: none; animation: none; }

/* Tile-Stagger: deutlicher als normaler Fade-In, damit man's beim Scrollen merkt */
.tile-stagger > .fade-in {
  transform: translateY(22px) scale(0.96);
  transition: opacity 540ms cubic-bezier(.22,.61,.36,1),
              transform 540ms cubic-bezier(.22,.61,.36,1);
}
.tile-stagger > .fade-in.in { transform: translateY(0) scale(1); }
.no-js .fade-in { opacity: 1; transform: none; animation: none; }
@keyframes tb-failsafe-show {
  to { opacity: 1; transform: none; }
}