/* ─────────────────────────────────────────────────────────────────
   LAYOUT.CSS — Single-column editorial grid + navigation
   SEED A (digit 3): Ultra-narrow 560px column, full-bleed breaks
   SEED E (digit 1): Fullscreen overlay navigation
───────────────────────────────────────────────────────────────── */

/* ── COLUMN CONTAINERS ────────────────────────────────────────── */

/* The editorial spine — 560px, centered */
.editorial-col {
  max-width: var(--col-editorial);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--page-pad);
  padding-right: var(--page-pad);
}

/* Wide column for tables and multi-element rows */
.wide-col {
  max-width: var(--col-wide);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--page-pad);
  padding-right: var(--page-pad);
}

/* Full-bleed — break out of any parent container */
.full-bleed {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

/* ── SECTION BASE ─────────────────────────────────────────────── */
.section {
  position: relative;
  padding: var(--space-20) 0;
}

.section--sm {
  padding: var(--space-12) 0;
}

.section--lg {
  padding: var(--space-28) 0;
}

/* Ghost section numerals — typographic texture */
.section[data-num]::before {
  content: attr(data-num);
  position: absolute;
  top: -0.15em;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: 22vw;
  font-weight: 900;
  font-style: italic;
  color: var(--brand-primary);
  opacity: 0.04;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  z-index: 0;
  white-space: nowrap;
  overflow: hidden;
}

/* Ensure content sits above ghost numeral */
.section > * {
  position: relative;
  z-index: 1;
}

/* ── ALTERNATE SECTION BACKGROUNDS ───────────────────────────── */
.section--raised {
  background: var(--surface-raised);
}

.section--section {
  background: var(--surface-section);
}

.section--copper {
  background: var(--surface-inverse);
  color: var(--text-inverse);
}

/* ── PROGRESS BAR ─────────────────────────────────────────────── */
#pb {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--brand-primary);
  z-index: var(--z-max);
  transition: width 80ms linear;
  transform-origin: left;
}

/* ── NAV HAMBURGER BUTTON ─────────────────────────────────────── */
#nav-hamburger {
  position: fixed;
  top: var(--space-5);
  right: var(--page-pad);
  z-index: var(--z-max);
  width: 44px;
  height: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--border-mid);
  transition:
    border-color var(--dur-fast),
    background var(--dur-fast);
}

#nav-hamburger:hover {
  border-color: var(--brand-primary);
  background: rgba(200,121,65,0.08);
}

#nav-hamburger span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-primary);
  transition:
    transform var(--dur-mid) var(--ease-out),
    opacity var(--dur-fast);
  transform-origin: center;
}

#nav-hamburger.is-open span:nth-child(1) {
  transform: rotate(45deg) translate(5.5px, 5.5px);
}

#nav-hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

#nav-hamburger.is-open span:nth-child(3) {
  transform: rotate(-45deg) translate(5.5px, -5.5px);
}

/* ── FIXED NAV HEADER (wordmark + scroll states) ──────────────── */
#site-nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--page-pad);
  padding-right: calc(var(--page-pad) + 60px); /* space for hamburger */
  background: transparent;
  transition:
    background var(--dur-mid) var(--ease-out),
    border-color var(--dur-mid),
    padding var(--dur-mid) var(--ease-out);
  border-bottom: 1px solid transparent;
  pointer-events: none; /* clicks pass through when transparent */
}

#site-nav-bar .wordmark {
  pointer-events: all;
}

#site-nav-bar.is-scrolled {
  background: rgba(20, 20, 20, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border-subtle);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

/* ── FULLSCREEN NAV OVERLAY ───────────────────────────────────── */
#nav-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: var(--surface-overlay);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-16) var(--page-pad);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-slow) var(--ease-out);
  overflow-y: auto;
}

#nav-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

.nav-overlay__inner {
  max-width: 640px;
}

.nav-overlay__links {
  display: flex;
  flex-direction: column;
}

.nav-overlay__link {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  font-style: italic;
  color: var(--text-primary);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-subtle);
  text-decoration: none;
  transition:
    color var(--dur-fast),
    padding-left var(--dur-mid) var(--ease-out);
  letter-spacing: -0.01em;
}

.nav-overlay__link:hover {
  color: var(--brand-primary);
  padding-left: var(--space-4);
}

.nav-overlay__link-num {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-style: normal;
  font-weight: 400;
  color: var(--text-secondary);
}

.nav-overlay__cta {
  margin-top: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.nav-overlay__cta-btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 700;
  background: var(--brand-primary);
  color: var(--text-inverse);
  padding: var(--space-4) var(--space-8);
  letter-spacing: 0.02em;
  transition: background var(--dur-fast);
  text-decoration: none;
}

.nav-overlay__cta-btn:hover {
  background: var(--brand-primary-dk);
}

.nav-overlay__close-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── STICKY BAR ───────────────────────────────────────────────── */
#iqi4em {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: var(--surface-raised);
  border-top: 2px solid var(--brand-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--page-pad);
  transform: translateY(100%);
  transition: transform var(--dur-slow) var(--ease-out);
  flex-wrap: wrap;
}

#iqi4em.sticky-visible {
  transform: translateY(0);
}

#iqi4em span {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--text-primary);
  font-weight: 500;
}

#iqi4em a {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  background: var(--brand-primary);
  color: var(--text-inverse);
  padding: var(--space-2) var(--space-5);
  white-space: nowrap;
  text-decoration: none;
  transition: background var(--dur-fast);
  flex-shrink: 0;
}

#iqi4em a:hover {
  background: var(--brand-primary-dk);
}

/* ── HERO LAYOUT ──────────────────────────────────────────────── */
.section--hero {
  padding-top: var(--space-28);
  padding-bottom: 0;
  overflow: visible;
}

.hero-eyebrow-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.hero-date {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.hero-media {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-top: var(--space-10);
  height: clamp(300px, 60vh, 600px);
  overflow: hidden;
  position: relative;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  filter: grayscale(1);
  display: block;
}

/* Copper duotone overlay — SEED D (digit 9) */
.duotone-overlay {
  position: absolute;
  inset: 0;
  background: var(--brand-primary);
  mix-blend-mode: multiply;
  opacity: 0.5;
  pointer-events: none;
}

/* ── ARTICLE IMAGE ────────────────────────────────────────────── */
.article-img {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  position: relative;
  overflow: hidden;
}

.article-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1);
  display: block;
}

/* Duotone on all article images */
.article-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--brand-primary);
  mix-blend-mode: multiply;
  opacity: 0.45;
  pointer-events: none;
}

.article-img--contained {
  width: 100%;
  margin-left: 0;
}

/* ── RESPONSIVE ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .section {
    padding: var(--space-12) 0;
  }

  .section--lg {
    padding: var(--space-16) 0;
  }

  .section[data-num]::before {
    font-size: 40vw;
    opacity: 0.035;
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--space-10) 0;
  }

  #nav-overlay {
    padding: var(--space-20) var(--page-pad) var(--page-pad);
  }

  .nav-overlay__link {
    font-size: clamp(1.5rem, 8vw, 2.5rem);
  }
}