/* ─────────────────────────────────────────
   layout.css — Page Structure & Navigation
───────────────────────────────────────── */

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.nav.scrolled {
  border-bottom-color: var(--color-border);
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}

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

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

/* ── Page wrapper ── */
.page {
  padding-top: var(--nav-height);
}

/* ── Content container ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Section ── */
.section {
  padding: var(--space-16) 0;
}

.section--hero {
  padding-top: 80px;
  padding-bottom: var(--space-16);
}

/* ── Rule divider ── */
.rule {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 0;
}

/* ── Section header ── */
.section__header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: var(--space-8);
}

.section__number {
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  flex-shrink: 0;
}

/* ── Contact grid ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: var(--space-6);
}