/* Shared website header and navigation */
.site-header {
  width: 100%;
  min-height: 80px;
  display: flex;
  align-items: center;
  z-index: 1000;
}

.site-header.scrolled,
.site-header.mobile-menu-open {
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
}

.site-header .header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 1280px;
  min-height: 80px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header .logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 24px;
  font-weight: 700;
}

.site-header .logo-mark {
  width: 32px;
  height: 32px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header .desktop-nav {
  display: flex;
  gap: 32px;
}

.site-header .nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition, 0.3s cubic-bezier(0.4, 0, 0.2, 1));
}

.site-header .nav-link:hover,
.site-header .nav-link:focus-visible {
  color: var(--text-primary);
}

.site-header .header-actions {
  display: flex;
  gap: 16px;
  align-items: center;
}

.site-header .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
  transition: var(--transition, 0.3s cubic-bezier(0.4, 0, 0.2, 1));
  cursor: pointer;
  border: none;
}

.site-header .btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.site-header .btn-ghost:hover,
.site-header .btn-ghost:focus-visible {
  color: var(--text-primary);
}

.site-header .mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  transition: var(--transition, 0.3s cubic-bezier(0.4, 0, 0.2, 1));
}

.site-header .mobile-menu-btn:hover,
.site-header .mobile-menu-btn:focus-visible,
.site-header.mobile-menu-open .mobile-menu-btn {
  background: var(--bg-glass);
  border-color: var(--border-glass);
}

.site-header .mobile-menu-btn:focus-visible,
.site-header .nav-link:focus-visible,
.site-header .btn:focus-visible,
.site-header .mobile-nav-link:focus-visible {
  outline: 2px solid var(--secondary-color);
  outline-offset: 4px;
}

.site-header .mobile-nav {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  left: 24px;
  right: 24px;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  border-radius: 24px;
  background: rgba(3, 27, 39, 0.94);
  border: 1px solid var(--border-glass);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-8px);
  transition: var(--transition, 0.3s cubic-bezier(0.4, 0, 0.2, 1));
}

.site-header .mobile-nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  padding: 8px 0;
  transition: var(--transition, 0.3s cubic-bezier(0.4, 0, 0.2, 1));
}

.site-header .mobile-nav-link:hover,
.site-header .mobile-nav-link:focus-visible {
  color: var(--secondary-color);
}

.site-header .mobile-nav-login {
  width: 100%;
  margin-top: 8px;
}

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

@media (max-width: 968px) {
  .site-header .desktop-nav,
  .site-header .header-actions {
    display: none;
  }

  .site-header .mobile-menu-btn {
    display: inline-flex;
  }

  .site-header .mobile-nav {
    display: flex;
  }
}

@media (max-width: 480px) {
  .site-header .mobile-nav {
    left: 16px;
    right: 16px;
    padding: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header .mobile-nav,
  .site-header .mobile-nav-link,
  .site-header .mobile-menu-btn,
  .site-header .nav-link,
  .site-header .btn {
    transition: none;
  }

  .site-header .mobile-nav {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}