/* Sticky Header mit Verdichtung beim Scrollen */

.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  transition: box-shadow var(--dur-base) var(--ease-out);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-md);
}

.site-header__inner {
  width: min(100% - (var(--gutter) * 2), var(--container));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: clamp(1rem, 3vw, 2.5rem);
  transition: height var(--dur-base) var(--ease-out);
}

.site-header.is-scrolled .site-header__inner {
  height: var(--header-h-condensed);
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex: 0 0 auto;
}

.site-branding img {
  height: 3rem;
  width: auto;
  transition: height var(--dur-base) var(--ease-out);
}
.site-header.is-scrolled .site-branding img { height: 2.35rem; }

.site-branding__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.1;
  color: var(--ink);
}
.site-branding__name small {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2.2vw, 2.25rem);
  flex: 1 1 auto;
  justify-content: flex-end;
}

.primary-nav ul {
  display: contents;
}

.primary-nav > ul {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, 2vw, 2rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

.primary-nav li { position: relative; }

.primary-nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
  padding: 0.5em 0.1em;
  position: relative;
}

.primary-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 100%;
  bottom: 0.2em;
  height: 2px;
  background: var(--accent);
  transition: right var(--dur-base) var(--ease-out);
}
.primary-nav a:hover::after,
.primary-nav a:focus-visible::after { right: 0; }

.header-cta {
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  background: transparent;
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--ink);
  flex: 0 0 auto;
}
.nav-toggle .icon { width: 1.5rem; height: 1.5rem; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-menu { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 600;
  visibility: hidden;
  pointer-events: none;
}

.mobile-drawer__panel {
  position: absolute;
  top: 0; right: 0;
  height: 100%;
  width: min(88vw, 380px);
  background: var(--paper);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem clamp(1.25rem, 5vw, 2rem) 2.5rem;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--dur-base) var(--ease-out);
  display: flex;
  flex-direction: column;
}

.mobile-drawer__scrim {
  position: absolute;
  inset: 0;
  background: color-mix(in oklch, var(--ink) 55%, transparent);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}

.mobile-drawer.is-open {
  visibility: visible;
  pointer-events: auto;
}
.mobile-drawer.is-open .mobile-drawer__panel { transform: translateX(0); }
.mobile-drawer.is-open .mobile-drawer__scrim { opacity: 1; }

.mobile-drawer__top {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1.5rem;
}
.mobile-drawer__close {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-strong);
  background: transparent;
  border-radius: var(--radius);
  cursor: pointer;
}

.mobile-drawer ul {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.mobile-drawer li { border-bottom: 1px solid var(--line); }
.mobile-drawer a {
  display: block;
  padding: 0.95em 0.1em;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--ink);
  min-height: 44px;
}

.mobile-drawer__contact {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  font-size: 0.9rem;
}
.mobile-drawer__contact .contact-line { color: var(--ink-soft); }