/* ============================================================
   LAYOUT — Navigation, Footer, Global Structural Patterns
   ============================================================ */

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-6) 0;
  transition: background var(--transition), padding var(--transition);
}

.nav.scrolled {
  background: rgba(13, 9, 7, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--space-4) 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
}

.nav__logo span {
  color: var(--color-coral);
}

.nav__links {
  display: flex;
  gap: var(--space-8);
  align-items: center;
}

.nav__links a {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-text-primary);
}

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-text-primary);
  transition: all var(--transition);
}

.nav__toggle.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav__toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav__toggle.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile nav */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--color-base);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
}

.nav__mobile.open {
  display: flex;
}

.nav__mobile a {
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  font-weight: 300;
  font-style: italic;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.nav__mobile a:hover {
  color: var(--color-text-primary);
}

@media (max-width: 767px) {
  .nav__links  { display: none; }
  .nav__toggle { display: flex; }
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-12);
  margin-top: var(--space-32);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__brand {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text-secondary);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
}

.footer__links a {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--color-text-secondary);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

/* --- Section Header Pattern --- */
.section-header {
  margin-bottom: var(--space-12);
}

.section-header__label {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-coral);
  display: block;
  margin-bottom: var(--space-4);
}

.section-header__title {
  font-family: var(--font-serif);
  font-size: var(--text-4xl);
  font-weight: 300;
  line-height: 1.1;
  color: var(--color-heading);
  text-shadow: var(--shadow-heading);
}

@media (min-width: 768px) {
  .section-header__title { font-size: var(--text-5xl); }
}

.section-header__body {
  max-width: 52ch;
  margin-top: var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  padding-top: calc(var(--space-32) + var(--space-16));
  padding-bottom: var(--space-16);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-16);
}

.page-hero__label {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-coral);
  display: block;
  margin-bottom: var(--space-6);
}

.page-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 300;
  line-height: 1.05;
  color: var(--color-heading);
  text-shadow: var(--shadow-heading);
}

.page-hero__title em {
  font-style: italic;
  color: var(--color-heading);
  opacity: 0.7;
}