/* ================================================================
   ShaDey Inc. Site Navigation, Breadcrumbs, Related Links, Footer
   Design: Ultra-Modern Sophisticated
   ================================================================ */

/* ---------- Top Navigation (Glass) ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--nav-h);
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(24px) saturate(1.8);
  -webkit-backdrop-filter: blur(24px) saturate(1.8);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  font-family: var(--font-sans);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-nav.scrolled {
  background: rgba(255,255,255,0.92);
  box-shadow: 0 1px 12px rgba(0,0,0,0.06);
}
body[data-page="modeler"] .site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
}
.site-nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 32px;
  gap: 8px;
}

/* Brand */
.site-nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-right: 40px;
  transition: opacity var(--ease-fast);
}
.site-nav__brand:hover {
  opacity: 0.7;
}
.site-nav__logo {
  width: 26px;
  height: 26px;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.site-nav__logo svg {
  width: 100%;
  height: 100%;
}
.site-nav__brand-text {
  font-family: var(--font-headline);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.site-nav__brand-sub {
  display: none;
}

/* Links container */
.site-nav__links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  justify-content: flex-start;
}

/* Individual link */
.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--ease-fast), background var(--ease-fast);
  white-space: nowrap;
  position: relative;
  border-radius: var(--radius-sm);
}
.site-nav__link:hover {
  color: var(--color-text);
  background: rgba(0,0,0,0.04);
}
.site-nav__link--active {
  color: var(--color-accent);
  font-weight: 600;
}
.site-nav__link--active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

/* Dropdown group */
.site-nav__group {
  position: relative;
}
.site-nav__group-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-text-secondary);
  text-decoration: none;
  cursor: default;
  transition: color var(--ease-fast), background var(--ease-fast);
  white-space: nowrap;
  border: none;
  background: none;
  font-family: inherit;
  border-radius: var(--radius-sm);
}
.site-nav__group-trigger:hover {
  color: var(--color-text);
  background: rgba(0,0,0,0.04);
}
.site-nav__group--has-active > .site-nav__group-trigger {
  color: var(--color-accent);
  font-weight: 600;
}
.site-nav__caret {
  width: 10px;
  height: 10px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.site-nav__group:hover .site-nav__caret,
.site-nav__group.open .site-nav__caret {
  transform: rotate(180deg);
}
.site-nav__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: -4px;
  min-width: 260px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.98);
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.25s ease;
  z-index: 210;
}
.site-nav__group:hover .site-nav__dropdown,
.site-nav__group.open .site-nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.site-nav__dropdown-link {
  display: block;
  padding: 10px 14px;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.005em;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--ease-fast), background var(--ease-fast);
}
.site-nav__dropdown-link:hover {
  color: var(--color-text);
  background: rgba(0,0,0,0.04);
}
.site-nav__dropdown-link--active {
  color: var(--color-accent);
  font-weight: 600;
  background: rgba(139,105,20,0.06);
}

/* Burger (mobile) */
.site-nav__burger {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px;
  color: var(--color-text);
  transition: color var(--ease-fast);
  border-radius: var(--radius-sm);
}
.site-nav__burger:hover { color: var(--color-accent); background: rgba(0,0,0,0.04); }
.site-nav__burger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
}
.site-nav__burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.site-nav__burger.open span:nth-child(2) { opacity: 0; }
.site-nav__burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- Breadcrumbs ---------- */
.site-breadcrumbs {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 12px 32px;
  font-family: var(--font-sans);
}
.site-breadcrumbs__list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  flex-wrap: wrap;
}
.site-breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
}
.site-breadcrumbs__item a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--ease-fast);
}
.site-breadcrumbs__item a:hover {
  color: var(--color-accent-dark);
}
.site-breadcrumbs__sep {
  color: var(--color-outline-variant);
  font-size: 0.65rem;
  user-select: none;
}

/* ---------- Related Links ---------- */
.site-related {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 32px;
  font-family: var(--font-sans);
}
.site-related__title {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 32px;
  letter-spacing: var(--ls-tight);
}
.site-related__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.site-related__card {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--ease-med);
}
.site-related__card:hover {
  border-color: rgba(139,105,20,0.2);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.site-related__card-icon {
  width: 44px;
  height: 44px;
  background: var(--gradient-dark);
  color: var(--color-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: var(--radius-md);
}
.site-related__card-icon svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.site-related__card-body { flex: 1; min-width: 0; }
.site-related__card-title {
  font-family: var(--font-headline);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.site-related__card-desc {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  letter-spacing: var(--ls-luxury);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-sans);
  margin-top: 0;
}
.site-footer__top {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 32px 56px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
}
.site-footer__brand-name {
  font-family: var(--font-headline);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-on-primary);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.site-footer__brand-desc {
  font-size: 0.85rem;
  line-height: 1.7;
  max-width: 380px;
  color: rgba(255,255,255,0.5);
  letter-spacing: var(--ls-luxury);
}
.site-footer__col-title {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--ls-label);
  color: rgba(255,255,255,0.35);
  margin-bottom: 20px;
}
.site-footer__col-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.site-footer__col-links a {
  font-size: 0.85rem;
  font-weight: 400;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color var(--ease-fast);
}
.site-footer__col-links a:hover {
  color: var(--color-secondary-fixed-dim);
}
.site-footer__bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.site-footer__copy {
  font-size: 0.75rem;
  font-weight: 400;
  color: rgba(255,255,255,0.35);
}
.site-footer__label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: rgba(255,255,255,0.35);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .site-nav__links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 4px;
    overflow-y: auto;
    z-index: 205;
  }
  .site-nav__links.open {
    display: flex;
  }
  .site-nav.menu-open {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: #ffffff;
  }
  .site-nav__burger {
    display: flex;
    margin-left: auto;
  }
  .site-nav__group-trigger,
  .site-nav__link {
    padding: 12px 14px;
    font-size: 0.8125rem;
  }
  .site-nav__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0 0 0 16px;
    background: transparent;
    backdrop-filter: none;
    border-radius: 0;
  }
  .site-nav__brand-sub { display: none; }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 56px 24px 40px;
  }
  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-related__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .site-nav__inner { padding: 0 16px; }
  .site-nav__brand-text { font-size: 0.92rem; }
  .site-breadcrumbs { padding: 8px 16px; }
  .site-related { padding: 40px 16px; }
  .site-footer__top { padding: 40px 16px 28px; }
  .site-footer__bottom { padding: 16px; }
}

@media print {
  .site-nav,
  .site-breadcrumbs,
  .site-related,
  .site-footer { display: none !important; }
}