.site-header {
  background: rgba(3, 17, 31, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  left: 0;
  position: sticky;
  right: 0;
  top: 0;
  transition:
    box-shadow var(--transition-base),
    background-color var(--transition-base);
  z-index: 50;
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  align-items: center;
  display: flex;
  gap: var(--space-6);
  min-height: var(--header-height);
}

.header__brand {
  align-items: center;
  display: inline-flex;
  flex: 0 0 auto;
}

.header__logo {
  height: 80px;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius-xs);
  width: 180px;
}

.header__nav {
  align-items: center;
  display: flex;
  flex: 1;
  justify-content: center;
}

.header__menu {
  align-items: center;
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.header__menu a {
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 700;
  transition: color var(--transition-base);
}

.header__menu a:hover {
  color: var(--color-secondary-bright);
}

.header__button {
  flex: 0 0 auto;
}

.header__mobile-cta,
.header__toggle {
  display: none;
}

@media (max-width: 980px) {
  .header__inner {
    justify-content: space-between;
  }

  .header__button {
    display: none;
  }

  .header__toggle {
    align-items: center;
    background: var(--color-secondary);
    border-radius: var(--radius-sm);
    display: inline-flex;
    flex-direction: column;
    gap: 5px;
    height: 44px;
    justify-content: center;
    width: 44px;
  }

  .header__toggle-line {
    background: var(--color-white);
    border-radius: 99px;
    display: block;
    height: 2px;
    transition:
      opacity var(--transition-base),
      transform var(--transition-base);
    width: 21px;
  }

  .site-header.is-open .header__toggle-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .site-header.is-open .header__toggle-line:nth-child(2) {
    opacity: 0;
  }

  .site-header.is-open .header__toggle-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .header__nav {
    background: var(--color-primary-strong);
    border-bottom: 1px solid var(--color-mist);
    box-shadow: var(--shadow-md);
    display: grid;
    gap: var(--space-5);
    left: 0;
    opacity: 0;
    padding: var(--space-6);
    pointer-events: none;
    position: absolute;
    right: 0;
    top: 100%;
    transform: translateY(-12px);
    transition:
      opacity var(--transition-base),
      transform var(--transition-base),
      visibility var(--transition-base);
    visibility: hidden;
  }

  .site-header.is-open .header__nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    visibility: visible;
  }

  .header__menu {
    align-items: stretch;
    flex-direction: column;
    gap: var(--space-2);
  }

  .header__menu a {
    border-radius: var(--radius-sm);
    display: block;
    padding: var(--space-3) var(--space-4);
  }

  .header__menu a:hover {
    background: var(--color-primary);
  }

  .header__mobile-cta {
    display: inline-flex;
    width: 100%;
  }
}

@media (max-width: 520px) {
  .header__logo {
    height: 44px;
    width: 150px;
  }
}