/* ============================================================
   Site Header & Navigation
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-4) var(--space-4);
  pointer-events: none;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-8);
  box-shadow: var(--shadow-signature);
  pointer-events: all;
  transition: box-shadow var(--transition-normal);
}

.site-header__logo img {
  height: 36px;
  width: auto;
}

/* Nav */
.site-header__nav {
  display: none;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.site-header__nav-link {
  font-family: var(--font-headline);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-on-surface);
  transition: color var(--transition-fast);
  position: relative;
}

.site-header__nav-link:hover,
.site-header__nav-link[aria-current="page"] {
  color: var(--color-primary-container);
}

.site-header__nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary-container);
}

/* Actions */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-header__cta {
  display: none;
  box-shadow: none;
}

.site-header__cta:hover {
  box-shadow: none;
}

/* Header über Overlay wenn Nav offen */
.site-header.nav-is-open {
  z-index: calc(var(--z-overlay) + 10);
}

/* Hamburger Toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: var(--space-1);
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-on-surface);
  transition:
    transform 0.35s cubic-bezier(0.23, 1, 0.32, 1),
    opacity 0.25s ease,
    width 0.35s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Hamburger → X */
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (prefers-reduced-motion: reduce) {
  .nav-toggle__bar {
    transition: none;
  }
}

/* Mobile Overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background-color: var(--color-surface-container-lowest);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;
  visibility: hidden;
}

.nav-overlay.is-open {
  opacity: 1;
  pointer-events: all;
  visibility: visible;
}

@media (prefers-reduced-motion: reduce) {
  .nav-overlay {
    transition: none;
  }
}

.nav-overlay__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  text-align: center;
}

.nav-overlay__link {
  font-family: var(--font-headline);
  font-weight: var(--font-weight-black);
  font-size: var(--text-4xl);
  text-transform: uppercase;
  letter-spacing: var(--tracking-tight);
  color: var(--color-on-surface);
  transition: color var(--transition-fast);
  line-height: 1;
}

.nav-overlay__link:hover,
.nav-overlay__link[aria-current="page"] {
  color: var(--color-primary-container);
}

.nav-overlay__cta {
  margin-top: var(--space-4);
}

/* Anrufen- und WhatsApp-Buttons (nur auf Standort-Seiten sichtbar) */
.site-header__telefon,
.site-header__whatsapp {
  display: none;
  align-items: center;
  gap: var(--space-2);
  box-shadow: none;
  font-size: var(--text-sm);
  padding: var(--space-2);
}

/* Mobile: Icon-only, kein Text */
.site-header__telefon:not([hidden]),
.site-header__whatsapp:not([hidden]) {
  display: inline-flex;
}

.site-header__telefon .material-symbols-outlined,
.site-header__whatsapp .material-symbols-outlined {
  font-size: 1.25rem;
}

.site-header__btn-label {
  display: none;
}

/* Desktop: Icon + Text */
@media (min-width: 768px) {
  .site-header__telefon,
  .site-header__whatsapp {
    padding: var(--space-2) var(--space-4);
  }

  .site-header__btn-label {
    display: inline;
  }
}

/* Mobile Overlay WhatsApp-Link (nur auf Standort-Seiten sichtbar) */
.nav-overlay__whatsapp-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-headline);
  font-weight: var(--font-weight-black);
  font-size: var(--text-2xl);
  text-transform: uppercase;
  letter-spacing: var(--tracking-tight);
  color: var(--color-teal);
  transition: color var(--transition-fast);
  line-height: 1;
}

.nav-overlay__whatsapp-link:hover {
  color: var(--color-teal-light);
}

.nav-overlay__whatsapp-link .material-symbols-outlined {
  font-size: 1.5rem;
}

/* Desktop */
@media (min-width: 768px) {
  .site-header__nav {
    display: block;
  }

  .site-header__cta {
    display: inline-flex;
  }

  .nav-toggle {
    display: none;
  }
}

/* Offset für sticky Header */
body {
  padding-top: 88px;
}

@media (max-width: 767px) {
  body {
    padding-top: 76px;
  }

  .site-header {
    padding: var(--space-3) var(--space-4);
  }
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary-container);
  color: var(--color-on-primary);
  padding: var(--space-2) var(--space-6);
  font-family: var(--font-headline);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  z-index: calc(var(--z-modal) + 1);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}