/* ==========================================================================
   SAINO HOUSE — LAYOUT STYLES
   Grid, Asymmetric Editorial Composition, Containers, Header, Footer
   ========================================================================== */

/* Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--section-gutter);
  padding-right: var(--section-gutter);
}

.container-editorial {
  max-width: var(--container-editorial);
}

.container-narrow {
  max-width: var(--container-narrow);
}

/* Sections */
.section {
  padding-top: var(--section-spacing-y);
  padding-bottom: var(--section-spacing-y);
  position: relative;
}

.section-cream {
  background-color: var(--color-cream);
}

.section-charcoal {
  background-color: var(--color-charcoal);
  color: var(--color-ivory);
}

.section-charcoal h1,
.section-charcoal h2,
.section-charcoal h3,
.section-charcoal h4 {
  color: var(--color-ivory);
}

.section-charcoal p {
  color: rgba(250, 247, 242, 0.72);
}

.section-charcoal .text-caption {
  color: rgba(250, 247, 242, 0.55);
}

.section-charcoal .border-top {
  border-top-color: var(--border-light);
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(250, 247, 242, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 1000;
  border-bottom: 1px solid transparent;
  transition: background-color var(--duration-medium) var(--ease-editorial),
              border-color var(--duration-medium) var(--ease-editorial),
              height var(--duration-medium) var(--ease-editorial);
}

.site-header.scrolled {
  background-color: rgba(250, 247, 242, 0.95);
  border-bottom-color: var(--border-subtle);
  height: 72px;
  box-shadow: var(--shadow-subtle);
}

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

.brand-logo-link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-decoration: none;
}

.brand-wordmark {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-charcoal);
  font-weight: 500;
  line-height: 1;
}

.brand-subline {
  font-size: 0.6rem;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-charcoal-soft);
  margin-top: 3px;
  font-weight: 400;
}

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

.nav-link {
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-charcoal-muted);
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-charcoal);
  transition: width var(--duration-fast) var(--ease-editorial);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-charcoal);
}

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

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

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  z-index: 1010;
  border-radius: var(--radius-xs);
}

.mobile-nav-toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--color-charcoal);
  transition: transform var(--duration-fast) var(--ease-editorial),
              opacity var(--duration-fast) var(--ease-editorial);
}

.mobile-nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] span:nth-child(2) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 380px;
  height: 100vh;
  background-color: var(--color-ivory);
  box-shadow: var(--shadow-floating);
  z-index: 1005;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
  transform: translateX(100%);
  transition: transform var(--duration-medium) var(--ease-editorial);
  overflow-y: auto;
}

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

.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(23, 22, 20, 0.4);
  backdrop-filter: blur(4px);
  z-index: 1002;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-medium) var(--ease-editorial),
              visibility var(--duration-medium) var(--ease-editorial);
}

.mobile-nav-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.mobile-nav-link {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--color-charcoal);
  text-decoration: none;
}

.mobile-nav-link.active {
  color: var(--color-walnut);
}

/* Editorial Asymmetric Grids */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.grid-2-asym {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-3xl);
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

/* Page Hero Layout */
.page-hero {
  padding-top: calc(var(--header-height) + var(--space-4xl));
  padding-bottom: var(--space-3xl);
}

.page-hero-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
}

.page-hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-charcoal-soft);
  max-width: 48ch;
}

/* Footer Layout */
.site-footer {
  background-color: var(--color-graphite);
  color: var(--color-ivory);
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-2xl);
  border-top: 1px solid rgba(250, 247, 242, 0.08);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid rgba(250, 247, 242, 0.08);
}

.footer-brand .brand-wordmark {
  color: var(--color-ivory);
  font-size: 1.5rem;
}

.footer-brand .brand-subline {
  color: rgba(250, 247, 242, 0.55);
}

.footer-desc {
  margin-top: var(--space-md);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: rgba(250, 247, 242, 0.65);
  max-width: 32ch;
}

.footer-heading {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: rgba(250, 247, 242, 0.45);
  margin-bottom: var(--space-lg);
  font-weight: 500;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-nav-list a {
  font-size: var(--text-sm);
  color: rgba(250, 247, 242, 0.75);
}

.footer-nav-list a:hover {
  color: var(--color-ivory);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-xl);
  font-size: var(--text-xs);
  color: rgba(250, 247, 242, 0.45);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-bottom-links a {
  color: rgba(250, 247, 242, 0.45);
}

.footer-bottom-links a:hover {
  color: var(--color-ivory);
}

/* Split Visual Layout */
.editorial-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 80vh;
}

.editorial-split-media {
  position: relative;
  overflow: hidden;
}

.editorial-split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.editorial-split-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-4xl) var(--space-3xl);
}