/* ==========================================================================
   KANTORUM — Komponenten
   ========================================================================== */

/* Header / Navigation */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.site-header.is-scrolled {
  background: rgba(247, 245, 240, 0.94);
  border-bottom-color: var(--color-border);
  backdrop-filter: saturate(140%) blur(6px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-2);
}

.logo-link {
  display: block;
  flex-shrink: 0;
}

/* Die freigegebene Logodatei enthält transparenten Rand um die Wortmarke.
   Damit die sichtbare Marke ihre Größe behält, wird das Bild größer
   dargestellt; negative Vertikalmargins halten die Headerhöhe stabil. */
.logo-link img {
  display: block;
  height: 52px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  margin-block: -3px;
}

@media (min-width: 900px) {
  .logo-link img {
    height: 64px;
    margin-block: -9px;
  }
}

.site-nav {
  display: none;
}

@media (min-width: 900px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-5);
  }
}

.site-nav a {
  text-decoration: none;
  font-size: var(--fs-small);
  color: var(--color-anthracite);
  padding-block: 0.25rem;
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration) var(--ease);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-bottom-color: var(--color-petrol);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Button */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--fs-small);
  font-weight: 600;
  text-decoration: none;
  padding: 0.7rem 1.4rem;
  border: 1px solid var(--color-anthracite);
  background: var(--color-anthracite);
  color: var(--color-offwhite);
  border-radius: var(--radius);
  transition: background var(--duration) var(--ease), color var(--duration) var(--ease);
}

.btn:hover,
.btn:focus-visible {
  background: var(--color-petrol);
  border-color: var(--color-petrol);
  color: var(--color-offwhite);
}

.btn--ghost {
  background: transparent;
  color: var(--color-anthracite);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: var(--color-anthracite);
  color: var(--color-offwhite);
}

.section--dark .btn--ghost {
  color: var(--color-offwhite);
  border-color: var(--color-border-on-dark);
}

.section--dark .btn--ghost:hover,
.section--dark .btn--ghost:focus-visible {
  background: var(--color-offwhite);
  color: var(--color-anthracite);
}

.btn--on-dark {
  background: var(--color-offwhite);
  color: var(--color-anthracite);
  border-color: var(--color-offwhite);
}

.btn--on-dark:hover,
.btn--on-dark:focus-visible {
  background: var(--color-greige);
  border-color: var(--color-greige);
  color: var(--color-anthracite);
}

.header-actions .btn {
  padding: 0.55rem 1.15rem;
  display: none;
}

@media (min-width: 900px) {
  .header-actions .btn {
    display: inline-block;
  }
}

/* Mobile-Menü-Toggle */
.menu-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  padding: 0;
}

@media (min-width: 900px) {
  .menu-toggle { display: none; }
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--color-anthracite);
  transition: transform var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--color-anthracite);
  z-index: 99;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-6) var(--container-padding);
  transform: translateY(-100%);
  transition: transform var(--duration) var(--ease);
}

.mobile-nav.is-open {
  transform: translateY(0);
}

.mobile-nav ul {
  display: grid;
  gap: var(--space-4);
}

.mobile-nav a {
  font-family: var(--font-serif);
  font-size: var(--fs-h3);
  color: var(--color-offwhite);
  text-decoration: none;
}

.mobile-nav .btn {
  margin-top: var(--space-5);
  font-family: var(--font-sans);
  font-size: var(--fs-small);
}

.mobile-nav a.btn--on-dark {
  color: var(--color-anthracite);
}

@media (min-width: 900px) {
  .mobile-nav { display: none; }
}

/* Zitat / Leitsatz */
.pull-quote {
  font-family: var(--font-serif);
  font-size: var(--fs-quote);
  line-height: var(--lh-tight);
  font-weight: 480;
  color: var(--color-anthracite);
  border-left: 3px solid var(--color-petrol);
  padding-left: var(--space-4);
  margin-block: var(--space-5);
  max-width: var(--measure);
}

.section--dark .pull-quote {
  color: var(--color-offwhite);
  border-left-color: var(--color-greige);
}

/* Rule / Divider */
.rule {
  border: none;
  border-top: var(--border-thin);
  margin-block: var(--space-6);
}

/* Footer */
.site-footer {
  background: var(--color-anthracite);
  color: var(--color-text-on-dark-muted);
  padding-block: var(--space-6);
}

.site-footer__top {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-bottom: var(--space-5);
  border-bottom: var(--border-thin-dark);
}

@media (min-width: 700px) {
  .site-footer__top {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

.site-footer__logo {
  display: block;
  height: 84px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  margin-block: -24px;
  margin-left: -9px;
}

.site-footer__tagline {
  font-size: var(--fs-small);
  color: var(--color-text-on-dark-muted);
  margin-top: var(--space-1);
}

.site-footer__claim {
  font-family: var(--font-serif);
  font-size: var(--fs-h3);
  color: var(--color-offwhite);
  max-width: 24rem;
}

.site-footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-5);
  font-size: var(--fs-small);
}

@media (min-width: 700px) {
  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.site-footer__links {
  display: flex;
  gap: var(--space-4);
}

.site-footer__links a {
  text-decoration: none;
  color: var(--color-text-on-dark-muted);
  border-bottom: 1px solid transparent;
}

.site-footer__links a:hover,
.site-footer__links a:focus-visible {
  border-bottom-color: var(--color-greige);
  color: var(--color-offwhite);
}

/* Footer: E-Mail-Adresse */
.site-footer__mail {
  margin-top: var(--space-1);
  font-size: var(--fs-small);
}

.site-footer__mail a {
  color: var(--color-text-on-dark-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.site-footer__mail a:hover,
.site-footer__mail a:focus-visible {
  color: var(--color-offwhite);
  border-bottom-color: var(--color-greige);
}

/* Accessibility: geschlossenes mobiles Menü nicht per Tastatur erreichbar */
.mobile-nav {
  visibility: hidden;
  transition: transform var(--duration) var(--ease), visibility 0s linear var(--duration);
}

.mobile-nav.is-open {
  visibility: visible;
  transition-delay: 0s;
}