/* Site Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: var(--space-lg) 0;
  transition: all var(--transition-normal);
  background: transparent;
}

.site-header--scrolled {
  background: rgba(10, 10, 10, 0.85);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  padding: var(--space-md) 0;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

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

/* Logo */
.site-logo img {
  height: 76px;
  width: auto;
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
}

.site-header--scrolled .site-logo img {
  height: 60px;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  position: relative;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-inverse);
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
  letter-spacing: 0.02em;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent-warm);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
  border-radius: 1px;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--color-accent-warm);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

/* CTA Nav Link */
.nav-link--cta {
  background: var(--color-accent-warm);
  color: var(--color-text-inverse);
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: var(--fw-semibold);
  letter-spacing: 0;
  transition: all var(--transition-normal);
}

.nav-link--cta::after {
  display: none;
}

.nav-link--cta:hover,
.nav-link--cta.is-active {
  color: var(--color-text-inverse);
  background: var(--color-accent-warm-light);
  transform: translateY(-1px);
}

/* Social Icons in Nav */
.nav-social {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-social a {
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition-fast);
  display: flex;
  padding: 6px;
  border-radius: var(--radius-full);
}

.nav-social a[aria-label="Instagram"] {
  color: #E1306C;
}

.nav-social a[aria-label="Facebook"] {
  color: #1877F2;
}

.nav-social a:hover {
  opacity: 0.8;
}

.nav-social svg {
  width: 18px;
  height: 18px;
}

/* Hamburger Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
  z-index: calc(var(--z-nav) + 10);
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-inverse);
  border-radius: 2px;
  transition: all var(--transition-normal);
  transform-origin: center;
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav */
@media (max-width: 1023px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(360px, 85vw);
    height: 100vh;
    height: 100dvh;
    background: var(--color-bg-dark);
    flex-direction: column;
    align-items: flex-start;
    padding: 6rem var(--space-2xl) var(--space-2xl);
    gap: var(--space-2xl);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-lg);
    width: 100%;
  }

  .nav-link {
    font-size: var(--fs-lg);
  }

  .nav-link--cta {
    width: 100%;
    text-align: center;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-md);
  }

  .nav-social {
    margin-top: auto;
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
  }
}

/* Mobile overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  z-index: calc(var(--z-nav) - 1);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.nav-overlay.is-visible {
  display: block;
  opacity: 1;
}