.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-paper-white);
  border-bottom: 1px solid var(--color-paper-edge);
  box-shadow: var(--shadow-soft);
}

.site-header__inner {
  max-width: var(--container-main-max);
  margin-inline: auto;
  padding-inline: var(--container-main-padding-inline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  min-height: 72px;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  text-decoration: none;
  color: var(--color-deep-ink);
  flex-shrink: 0;
}

.site-header__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

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

.site-header__brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-deep-ink);
  white-space: nowrap;
}

.site-header__brand-subtitle {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-deep-ink);
  border-radius: var(--radius-default);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.site-header__toggle:hover {
  background-color: var(--color-deep-ink);
}

.site-header__toggle:hover .site-header__toggle-line {
  background-color: var(--color-paper-white);
}

.site-header__toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-deep-ink);
  transition: background-color var(--transition-fast), 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: flex;
  align-items: center;
  gap: var(--space-24);
  flex: 1;
  justify-content: flex-end;
  min-width: 0;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
  white-space: nowrap;
}

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

.site-header__nav-link {
  display: inline-block;
  padding: var(--space-8) var(--space-4);
  font-size: var(--text-small-size);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-deep-ink);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.site-header__nav-link:hover {
  color: var(--color-mazury-blue);
  border-bottom-color: var(--color-mazury-blue);
}

.site-header__nav-link[aria-current="page"] {
  color: var(--color-mazury-blue);
  border-bottom-color: var(--color-mazury-blue);
}

.site-header__shortcuts {
  display: none;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex-shrink: 0;
}

.site-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: var(--space-8) var(--space-12);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-default);
  border: 1px solid var(--color-deep-ink);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.site-header__cta--primary {
  background-color: var(--color-mazury-blue);
  border-color: var(--color-mazury-blue);
  color: #ffffff!important;
}

.site-header__cta--primary:hover {
  background-color: #245a80;
  border-color: #245a80;
  color: #ffffff;
}

.site-header__cta--secondary {
  background-color: transparent;
  border-color: var(--color-deep-ink);
  color: var(--color-deep-ink);
}

.site-header__cta--secondary:hover {
  background-color: var(--color-deep-ink);
  border-color: var(--color-deep-ink);
  color: var(--color-paper-white);
}

@media (max-width: 1023px) {
  .site-header__inner {
    flex-wrap: wrap;
    padding-block: var(--space-8);
  }

  .site-header__brand {
    flex: 1;
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-16);
    padding-block: var(--space-16);
    border-top: 1px solid var(--color-paper-edge);
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }

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

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-header__nav-item {
    border-bottom: 1px solid var(--color-paper-edge);
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-12) var(--space-4);
    border-bottom: none;
  }

  .site-header__nav-link:hover {
    background-color: var(--color-paper-edge);
    border-bottom: none;
  }

  .site-header__shortcuts {
    display: block;
  }

  .site-header__shortcuts-label {
    display: block;
    font-size: var(--text-caption-size);
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
    margin-bottom: var(--space-8);
  }

  .site-header__shortcuts-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-8);
  }

  .site-header__shortcuts-list a {
    display: inline-block;
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-small-size);
    color: var(--color-deep-ink);
    text-decoration: none;
    border: 1px solid var(--color-paper-edge);
    border-radius: var(--radius-default);
    transition: border-color var(--transition-fast), color var(--transition-fast);
  }

  .site-header__shortcuts-list a:hover {
    border-color: var(--color-mazury-blue);
    color: var(--color-mazury-blue);
  }

  .site-header__actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-8);
  }

  .site-header__cta {
    justify-content: center;
  }
}

@media (max-width: 767px) {
  .site-header__inner {
    min-height: 64px;
  }

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

  .site-header__brand-name {
    font-size: 1rem;
  }

  .site-header__brand-subtitle {
    font-size: 0.625rem;
  }
}