/* Header-specific styles for PAP-DACH */
.header-shell {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background-color: rgba(11, 16, 22, 0.9);
  border-bottom: 1px solid rgba(15, 23, 42, 0.95);
}

.header-shell .site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.8rem;
  padding-bottom: 0.8rem;
}

/* Brand */
.header-brand {
  display: flex;
  align-items: center;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.brand-mark {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: var(--radius-full);
  background: radial-gradient(circle at 30% 20%, var(--color-primary-strong), var(--color-primary));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  color: #020617;
  box-shadow: var(--shadow-sm);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
}

.brand-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Navigation */
.primary-nav {
  display: flex;
  align-items: center;
}

.nav-links {
  list-style: none;
  display: none;
  gap: var(--space-4);
  align-items: center;
  font-size: var(--font-size-sm);
}

.nav-item {
  display: flex;
}

.nav-link {
  position: relative;
  padding: 0.15rem 0;
  color: var(--color-text-muted);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.1rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  width: 100%;
}

.nav-link[aria-current="page"] {
  color: var(--color-text);
}

.nav-cta-wrapper {
  margin-left: var(--space-2);
}

.nav-cta {
  font-size: var(--font-size-xs);
  padding-inline: 1.1rem;
}

/* Mobile toggle */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  flex: 0 0 auto;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(15, 23, 42, 0.9);
  color: var(--color-text);
  cursor: pointer;
  appearance: none;
  padding: 0;
}

.nav-toggle-bar {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transform: translate(-50%, -50%);
  transform-origin: center;
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
}

/* Mobile menu state */
.header-shell.menu-open .nav-toggle {
  border-color: var(--color-primary);
}

.header-shell.menu-open .nav-toggle-bar:nth-child(1) {
  transform: translate(-50%, -50%) rotate(45deg);
}

.header-shell.menu-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.header-shell.menu-open .nav-toggle-bar:nth-child(3) {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.nav-toggle-bar:nth-child(1) {
  transform: translate(-50%, calc(-50% - 6px));
}

.nav-toggle-bar:nth-child(2) {
  transform: translate(-50%, -50%);
}

.nav-toggle-bar:nth-child(3) {
  transform: translate(-50%, calc(-50% + 6px));
}

/* Mobile nav panel */
@media (max-width: 767px) {
  .header-shell .site-header-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand toggle"
      "nav nav";
    align-items: center;
    column-gap: var(--space-3);
    row-gap: var(--space-3);
  }

  .header-brand {
    grid-area: brand;
    min-width: 0;
  }

  .nav-toggle {
    grid-area: toggle;
    justify-self: end;
  }

  .primary-nav {
    grid-area: nav;
    width: 100%;
  }

  .nav-links {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    margin-top: 0.35rem;
    padding: var(--space-4);
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
    display: flex;
    flex-direction: column;
    background: radial-gradient(circle at top left, rgba(0, 184, 148, 0.08), transparent 55%), var(--color-surface);
    border-bottom: 1px solid rgba(15, 23, 42, 0.95);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-4px);
    transition: max-height var(--transition-slow), opacity var(--transition-base), transform var(--transition-base);
  }

  .header-shell.menu-open .nav-links {
    max-height: 400px;
    opacity: 1;
    transform: translateY(0);
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    padding-block: 0.4rem;
  }

  .nav-cta-wrapper {
    margin-top: var(--space-3);
  }

  .nav-cta {
    width: 100%;
    justify-content: center;
  }
}

/* Desktop layout */
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-links {
    display: flex;
    position: static;
    padding: 0;
    margin: 0;
    max-height: none;
    opacity: 1;
    transform: none;
    background: none;
    box-shadow: none;
  }
}