/* ================================================
   LAYOUT.CSS
   Site-wide structural layout:
   header, navigation, footer, section wrappers.

   These components are shared across ALL pages.
   ================================================ */


/* ------------------------------------------------
   SITE HEADER
   Fixed top bar. Scrolls to condensed state.
   ------------------------------------------------ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  height: var(--header-height);
  background: linear-gradient(
    to bottom,
    rgba(14, 13, 11, 0.97) 0%,
    rgba(14, 13, 11, 0.0) 100%
  );
  /* Transition for scroll-condensed state (added via JS) */
  transition: background var(--transition-base), height var(--transition-base);
}

/* Condensed state when user scrolls down */
.site-header.scrolled {
  background: rgba(14, 13, 11, 0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: var(--border-subtle);
  height: 64px;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-8);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}


/* ------------------------------------------------
   LOGO / WORDMARK
   The N·R monogram + full name stacked.
   ------------------------------------------------ */
.site-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

.site-logo:hover {
  opacity: 0.8;
}

.logo-monogram {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  line-height: 1;
  color: var(--color-text);
}

.logo-dot {
  color: var(--color-accent);
  margin: 0 0.1em;
}

.logo-wordmark {
  font-family: var(--font-label);
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}


/* ------------------------------------------------
   PRIMARY NAVIGATION
   ------------------------------------------------ */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-link {
  font-family: var(--font-label);
  font-size: var(--text-xs);
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  position: relative;
  padding-bottom: 2px;
}

/* Underline hover effect */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

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

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

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


/* ------------------------------------------------
   MOBILE MENU TOGGLE
   Visible only on small screens.
   ------------------------------------------------ */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  flex-shrink: 0;
}

.toggle-bar {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Open state — X icon */
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}


/* ------------------------------------------------
   SECTION WRAPPER
   All content sections share this container.
   ------------------------------------------------ */
.section {
  padding: var(--section-padding) 0;
}

/* Alternate section background */
.section:nth-child(even) {
  background-color: var(--color-surface);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

/* Centered section header (label + title + rule) */
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

/* Decorative gold rule under section titles */
.section-rule {
  width: 60px;
  height: 1px;
  background: var(--color-accent-dim);
  margin: var(--space-4) auto 0;
}

/* CTA area below a section's content */
.section-footer {
  text-align: center;
  margin-top: var(--space-12);
}


/* ------------------------------------------------
   SITE FOOTER
   ------------------------------------------------ */
.site-footer {
  background-color: var(--color-bg-overlay);
  border-top: var(--border-subtle);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-8);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: var(--space-12);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.footer-monogram {
  font-size: 2.5rem;
}

.footer-name {
  font-family: var(--font-label);
  font-size: var(--text-xs);
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-nav-list a {
  font-family: var(--font-label);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

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

.footer-social {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  border: var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.social-link svg {
  width: 16px;
  height: 16px;
}

.social-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent-dim);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: var(--space-12) auto 0;
  padding: var(--space-6) var(--space-8) 0;
  border-top: var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.footer-tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-copy {
  font-family: var(--font-label);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}


/* ------------------------------------------------
   RESPONSIVE — TABLET
   ------------------------------------------------ */
@media (max-width: 900px) {

  .header-inner {
    padding: 0 var(--space-6);
  }

  /* Hide nav on mobile, show toggle */
  .site-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(14, 13, 11, 0.98);
    backdrop-filter: blur(8px);
    border-bottom: var(--border-subtle);
    padding: var(--space-8) var(--space-6);
  }

  .site-nav.is-open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-6);
  }

  .nav-link {
    font-size: var(--text-sm);
  }

  .nav-toggle {
    display: flex;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: var(--space-2);
  }

  .section-inner {
    padding: 0 var(--space-6);
  }
}


/* ------------------------------------------------
   RESPONSIVE — MOBILE
   ------------------------------------------------ */
@media (max-width: 600px) {

  :root {
    --section-padding: var(--space-16);
    --header-height: 68px;
  }

  .section-inner {
    padding: 0 var(--space-4);
  }

  .header-inner {
    padding: 0 var(--space-4);
  }
}