.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-miejska-biel);
  border-bottom: var(--border-default);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--page-padding-mobile);
  min-height: 56px;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-grafit-architektoniczny);
  min-width: 0;
  flex-shrink: 1;
}

.site-header__brand:hover {
  text-decoration: none;
  color: var(--color-grafit-architektoniczny);
}

.site-header__logo {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  object-fit: contain;
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  min-width: 0;
}

.site-header__brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-small-size);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__brand-subtitle {
  font-family: var(--font-heading);
  font-size: var(--text-micro-size);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-grafit-jasny);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-grafit-architektoniczny);
  border-radius: var(--radius-4);
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.site-header__toggle:hover {
  border-color: var(--color-baltycki-blekit);
  background-color: var(--color-papierowa-biel);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-baltycki-blekit);
  outline-offset: 2px;
}

.site-header__toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-grafit-architektoniczny);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2) {
  opacity: 0;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header__nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-papierowa-biel);
  border-bottom: var(--border-default);
  box-shadow: var(--shadow-dropdown);
  max-height: calc(100vh - 56px);
  overflow-y: auto;
  padding: var(--space-md) var(--page-padding-mobile) var(--space-lg);
}

.site-header__nav.is-open {
  display: block;
}

.site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.site-header__nav-item {
  margin: 0;
}

.site-header__nav-link {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-small-size);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-grafit-architektoniczny);
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-4);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.site-header__nav-link:hover {
  color: var(--color-baltycki-blekit);
  background-color: rgba(27, 107, 140, 0.08);
  text-decoration: none;
}

.site-header__nav-link:focus-visible {
  outline: 2px solid var(--color-baltycki-blekit);
  outline-offset: 2px;
}

.site-header__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.site-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: var(--text-small-size);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-4);
  text-decoration: none;
  min-height: 44px;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.site-header__cta:hover {
  text-decoration: none;
}

.site-header__cta--primary {
  background-color: var(--color-pomarancz-tramwajowy);
  color: var(--color-grafit-architektoniczny);
  border: 1px solid var(--color-pomarancz-tramwajowy);
}

.site-header__cta--primary:hover {
  background-color: var(--color-baltycki-blekit-gleboki);
  color: var(--color-miejska-biel);
  border-color: var(--color-baltycki-blekit-gleboki);
}

.site-header__cta--secondary {
  background-color: transparent;
  color: var(--color-grafit-architektoniczny);
  border: 1px solid var(--color-grafit-architektoniczny);
}

.site-header__cta--secondary:hover {
  background-color: var(--color-grafit-architektoniczny);
  color: var(--color-miejska-biel);
}

.site-header__cta:focus-visible {
  outline: 2px solid var(--color-baltycki-blekit);
  outline-offset: 2px;
}

@media (min-width: 768px) {
  .site-header__inner {
    padding-inline: var(--page-padding-tablet);
    min-height: 72px;
  }

  .site-header__logo {
    width: 40px;
    height: 40px;
  }

  .site-header__brand-name {
    font-size: var(--text-h3-size);
  }

  .site-header__brand-subtitle {
    font-size: var(--text-small-size);
  }

  .site-header__nav {
    max-height: calc(100vh - 72px);
  }
}

@media (min-width: 1024px) {
  .site-header__inner {
    padding-inline: var(--page-padding-desktop);
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: var(--space-lg);
    background-color: transparent;
    border-bottom: none;
    box-shadow: none;
    max-height: none;
    overflow: visible;
    padding: 0;
  }

  .site-header__nav-list {
    flex-direction: row;
    gap: var(--space-md);
  }

  .site-header__nav-link {
    padding: var(--space-xs) 0;
    border-radius: 0;
    position: relative;
  }

  .site-header__nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background-color: var(--color-baltycki-blekit);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-fast);
  }

  .site-header__nav-link:hover::after,
  .site-header__nav-link:focus-visible::after {
    transform: scaleX(1);
  }

  .site-header__nav-link:hover {
    background-color: transparent;
    color: var(--color-baltycki-blekit);
  }

  .site-header__actions {
    flex-direction: row;
    gap: var(--space-sm);
    margin-top: 0;
  }
}