.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.site-header.header--scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 1rem;
}

.header__logo img {
  height: 56px;
  width: auto;
  transition: opacity var(--transition);
}
.header__logo:hover img { opacity: 0.8; }

.header__nav { display: none; }
.header__cta { display: none; }

.header__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-shrink: 0;
  position: relative;
  z-index: 1001;
}

.header__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--color-dark);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease, background-color 0.2s ease;
}

.header__hamburger.is-open span { background-color: var(--color-bg); }
.header__hamburger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.header__hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.header__hamburger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.header__nav.is-open {
  display: flex;
  position: fixed;
  inset: 0;
  background-color: var(--color-dark);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 999;
  animation: menuFadeIn 0.22s ease;
}

@keyframes menuFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.header__nav-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.header__nav-list a {
  font-size: var(--text-2xl);
  font-family: var(--font-display);
  color: var(--color-bg);
  transition: color var(--transition);
}
.header__nav-list a:hover { color: var(--color-gold-light); }

@media (min-width: 768px) {
  .header__logo img { height: 44px; }

  .header__nav {
    display: flex;
    position: static;
    background: none;
    flex-direction: row;
  }
  .header__nav-list {
    flex-direction: row;
    gap: 2rem;
  }
  .header__nav-list a {
    font-size: var(--text-sm);
    color: var(--color-dark);
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: 0.03em;
  }
  .header__nav-list a:hover { color: var(--color-accent); }
  .header__cta { display: inline-flex; }
  .header__hamburger { display: none; }
}