/* src/css/components/header.css */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  z-index: 1000;
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  background-color: transparent;
  transition: var(--transition-fluid);
}

/* Scrolled state triggered via JS */
.site-header.scrolled {
  height: 70px;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-svg {
  width: 32px;
  height: 32px;
  stroke: var(--color-gold-matte);
  stroke-width: 1.5;
  fill: none;
  transition: var(--transition-fluid);
}

.logo-link:hover .logo-svg {
  stroke: var(--color-gold-glint);
  filter: drop-shadow(0 0 4px rgba(212, 195, 158, 0.3));
}

.logo-text {
  font-family: var(--font-display);
  color: var(--color-gold-matte);
  font-size: 1.25rem;
  letter-spacing: 0.2em;
  font-weight: 400;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-link {
  position: relative;
  color: var(--color-text-muted);
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.5rem 0;
  transition: var(--transition-micro);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1px;
  background-color: var(--color-gold-matte);
  transition: var(--transition-micro);
  transform: translateX(-50%);
}

.nav-link:hover {
  color: var(--color-gold-glint);
}

.nav-link:hover::after {
  width: 100%;
}

/* Mobile Menu Button */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 16px;
}

.menu-toggle span {
  display: block;
  height: 1px;
  width: 100%;
  background-color: var(--color-gold-matte);
  transition: var(--transition-micro);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav-list {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background-color: var(--color-bg-solid);
    border-left: 1px solid var(--color-border-subtle);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    transition: var(--transition-fluid);
  }

  .nav-list.active {
    right: 0;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}