/* ============================================================
   PRELUDE PAINTING — Layout
   Topbar · Header · Navigation · Footer
   ============================================================ */

/* ── Topbar ── */
.topbar {
  height: var(--topbar-height);
  background: var(--navy-dark);
  display: flex;
  align-items: center;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-8);
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.topbar__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
  text-decoration: none;
}
.topbar__item:hover { color: var(--gold); }

.topbar__item svg {
  width: 13px;
  height: 13px;
  stroke-width: 2;
  flex-shrink: 0;
}

.topbar__divider {
  width: 1px;
  height: 14px;
  background: rgba(255,255,255,0.12);
}

/* ── Header ── */
.site-header {
  height: var(--nav-height);
  background: rgba(253, 252, 251, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  right: 0;
  z-index: var(--z-header);
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(253, 252, 251, 0.99);
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ── Logo ── */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo__img {
  height: 42px;
  width: auto;
  object-fit: contain;
}

.site-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.site-logo__name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--navy);
  transition: color var(--transition);
}

.site-logo__tagline {
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--silver);
  margin-top: 3px;
}

.site-logo:hover .site-logo__name { color: var(--gold); }

/* ── Primary Nav ── */
.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.primary-nav__link {
  display: block;
  padding: 8px 14px;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-mid);
  text-decoration: none;
  border-radius: var(--radius);
  position: relative;
  transition: color var(--transition), background var(--transition);
}

.primary-nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 14px;
  right: 14px;
  height: 1.5px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.primary-nav__link:hover { color: var(--navy); }
.primary-nav__link:hover::after { transform: scaleX(1); }

.primary-nav__link.active {
  color: var(--navy);
}
.primary-nav__link.active::after { transform: scaleX(1); }

.primary-nav__cta {
  margin-left: var(--space-4);
}

/* ── Mobile Nav Toggle ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--navy);
  transform-origin: center;
  transition: transform var(--transition), opacity var(--transition), width var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobile Menu ── */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--warm-white);
  z-index: var(--z-mobile-menu);
  display: flex;
  flex-direction: column;
  padding: var(--space-8);
  padding-top: calc(var(--topbar-height) + var(--nav-height) + var(--space-8));
  transform: translateX(100%);
  transition: transform 0.45s var(--ease);
  overflow-y: auto;
}

.mobile-menu.open { transform: translateX(0); }

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: 0;
  list-style: none;
  margin-bottom: var(--space-10);
}

.mobile-menu__item {
  border-bottom: 1px solid var(--border);
}

.mobile-menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) 0;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 300;
  color: var(--navy);
  text-decoration: none;
  transition: color var(--transition);
}

.mobile-menu__link:hover { color: var(--gold); }
.mobile-menu__link svg { width: 20px; height: 20px; stroke-width: 1.5; }

.mobile-menu__footer {
  margin-top: auto;
  padding-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-menu__contact {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-light);
}
.mobile-menu__contact svg { width: 16px; height: 16px; color: var(--gold); stroke-width: 2; }

/* ── Footer ── */
.site-footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.5);
}

.site-footer__main {
  padding-block: var(--space-16) var(--space-12);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.6fr;
  gap: var(--space-12);
  align-items: start;
}

.footer-brand__logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.9);
  display: block;
  margin-bottom: var(--space-2);
}

.footer-brand__sub {
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  display: block;
  margin-bottom: var(--space-5);
}

.footer-brand__desc {
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(255,255,255,0.4);
  font-weight: 300;
  max-width: 300px;
}

.footer-col__heading {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-5);
}

.footer-col__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  list-style: none;
}

.footer-col__links a {
  font-size: 13.5px;
  color: rgba(255,255,255,0.45);
  text-decoration: none;
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-col__links a:hover { color: var(--gold); }

.footer-contact__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer-contact__icon {
  width: 32px;
  height: 32px;
  background: rgba(201,169,110,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.footer-contact__icon svg { width: 14px; height: 14px; color: var(--gold); stroke-width: 2; }

.footer-contact__label {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.28);
  margin-bottom: 2px;
}

.footer-contact__value {
  font-size: 13.5px;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: color var(--transition);
  display: block;
}
.footer-contact__value:hover { color: var(--gold); }

/* Footer bottom bar */
.site-footer__bottom {
  padding-block: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-bottom__copy {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}

.footer-bottom__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.footer-bottom__links a {
  font-size: 12px;
  color: rgba(255,255,255,0.25);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-bottom__links a:hover { color: rgba(255,255,255,0.6); }

/* ── Responsive Layout ── */
@media (max-width: 1024px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer-brand__desc { max-width: 100%; }
}

@media (max-width: 768px) {
  .primary-nav { display: none; }
  .nav-toggle { display: flex; }

  .topbar__inner {
    justify-content: center;
    gap: var(--space-5);
  }
  .topbar__item:nth-child(3),
  .topbar__divider { display: none; }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}