/* ============================================================================
   layout.css — Wrap, Section-Rhythmus, Header- und Footer-Grundlayout
   ========================================================================== */

/* ---------- Wrap ---------- */
.l-wrap {
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: var(--wrap-padding);
}

/* ---------- Section ---------- */
.section {
  padding-block: var(--section-padding-block);
}

.section--tight  { padding-block: clamp(2.5rem, 5vw, 5rem); }
.section--loose  { padding-block: clamp(6rem, 12vw, 12rem); }

.section__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-l);
}

.section__headline {
  max-width: 18ch;
}

.section__body {
  max-width: 60ch;
}

/* ---------- Stack / Cluster Hilfsklassen ---------- */
.l-stack > * + * { margin-top: var(--space-m); }
.l-stack--tight > * + * { margin-top: var(--space-s); }
.l-stack--loose > * + * { margin-top: var(--space-l); }

.l-cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s);
  align-items: center;
}

/* ---------- 12-Col-Grid (Wahrheit für alle Layouts) ---------- */
.l-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--grid-gap);
}

/* Auto-Grid für Cards-Listen (gleiche Card-Breite, auto-fit) */
.l-grid--cols-auto {
  grid-template-columns: repeat(auto-fit, minmax(min(18rem, 100%), 1fr));
}

/* Spalten-Utilities: spannweite + startposition.
   .col-span-N nutzt grid-column-END (Longhand) damit es mit .col-start-N
   kombinierbar ist — das Shorthand `grid-column: span N` würde sonst
   grid-column-start: span N setzen und einen folgenden col-start zerstören. */
.col-span-1  { grid-column-end: span 1; }
.col-span-2  { grid-column-end: span 2; }
.col-span-3  { grid-column-end: span 3; }
.col-span-4  { grid-column-end: span 4; }
.col-span-5  { grid-column-end: span 5; }
.col-span-6  { grid-column-end: span 6; }
.col-span-7  { grid-column-end: span 7; }
.col-span-8  { grid-column-end: span 8; }
.col-span-9  { grid-column-end: span 9; }
.col-span-10 { grid-column-end: span 10; }
.col-span-11 { grid-column-end: span 11; }
.col-span-12 { grid-column: 1 / -1; }

.col-start-1  { grid-column-start: 1; }
.col-start-2  { grid-column-start: 2; }
.col-start-3  { grid-column-start: 3; }
.col-start-4  { grid-column-start: 4; }
.col-start-5  { grid-column-start: 5; }
.col-start-6  { grid-column-start: 6; }
.col-start-7  { grid-column-start: 7; }
.col-start-8  { grid-column-start: 8; }
.col-start-9  { grid-column-start: 9; }
.col-start-10 { grid-column-start: 10; }
.col-start-11 { grid-column-start: 11; }
.col-start-12 { grid-column-start: 12; }

@media (max-width: 720px) {
  [class*="col-span-"],
  [class*="col-start-"] {
    grid-column: 1 / -1;
  }
}

/* ---------- Page-Wurzel ---------- */
.page { min-height: 100svh; display: flex; flex-direction: column; }
main { flex: 1; }

/* ---------- Site-Header (Sticky, transparent über Hero) ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  padding-block: var(--space-s);
  transition:
    background var(--duration-normal) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out),
    color var(--duration-normal) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: color-mix(in oklch, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--color-line);
}

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

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  font-size: var(--type-body);
  min-height: auto;
}

.site-header__brand-logo {
  width: 1.5rem;
  height: 1.5rem;
}

/* ---------- Site-Nav ---------- */
.site-nav__list {
  display: flex;
  gap: var(--space-m);
  align-items: center;
}

.site-nav__link {
  font-weight: var(--weight-medium);
  font-size: var(--type-body);
  padding-inline: var(--space-2xs);
  position: relative;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: var(--space-2xs);
  right: var(--space-2xs);
  bottom: 0.4rem;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration-normal) var(--ease-out);
}

.site-nav__link:hover::after,
.site-nav__link.is-current::after {
  transform: scaleX(1);
}

/* ---------- Site-Footer ---------- */
.site-footer {
  background: var(--color-surface);
  color: var(--color-text);
  padding-block: var(--space-2xl) var(--space-l);
  margin-top: auto;
}

.site-footer__col p + p { margin-top: var(--space-2xs); }

.site-footer__label {
  font-size: inherit;
  font-weight: var(--weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-2xs);
}

.site-footer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s);
}

.site-footer__meta a {
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.site-footer__bottom {
  margin-top: var(--space-l);
  padding-top: var(--space-m);
  border-top: 1px solid var(--color-line);
  font-size: inherit;
  color: var(--color-text);
}

/* ---------- Reveal-States (deaktiviert — kein Initial-Translate-Pop) ----------
   Klassen bleiben am Markup, IntersectionObserver setzt is-visible, hat aber
   visuell keinen Effekt. Reaktivierung jederzeit durch opacity/transform unten. */
[data-reveal],
[data-stagger] {
  opacity: 1;
  transform: none;
}

/* ---------- Parallax-Container ---------- */
[data-parallax] {
  will-change: transform;
}