/* ============================================================
   Field Notes on Being Alive — dark.css
   Dark editorial section styles (shared across pages):
   nav, hero, subscribe block, footer.
   ============================================================ */

/* -------- Navigation -------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  color: var(--color-parchment);
  transition: background 280ms var(--ease-out), border-color 280ms var(--ease-out);
  border-bottom: 1px solid transparent;
}
.nav--solid {
  background: var(--color-ink);
  border-bottom-color: rgba(246, 237, 224, 0.08);
}
.nav__inner {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.nav__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.005em;
  color: var(--color-parchment);
  white-space: nowrap;
}
.nav__brand em {
  font-family: var(--font-italic);
  font-style: italic;
  font-weight: 400;
  color: var(--color-dust);
  margin: 0 6px 0 8px;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav__link {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-parchment);
  transition: color 180ms var(--ease-out);
}
.nav__link:hover { color: var(--color-rust); }
.nav__link[aria-current="page"] { color: var(--color-rust); }
.nav__cta {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-rust);
  border: 1px solid var(--color-rust);
  padding: 10px 16px;
  background: transparent;
  transition: background 180ms var(--ease-out), color 180ms var(--ease-out);
}
.nav__cta:hover { background: var(--color-rust); color: var(--color-parchment); }

.nav__toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-parchment);
  width: 40px; height: 40px;
  padding: 0;
  align-items: center;
  justify-content: center;
}
.nav__toggle-bar {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--color-parchment);
  position: relative;
}
.nav__toggle-bar::before, .nav__toggle-bar::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: var(--color-parchment);
}
.nav__toggle-bar::before { top: -6px; }
.nav__toggle-bar::after  { top:  6px; }

@media (max-width: 720px) {
  .nav__links { display: none; }
  .nav__toggle { display: inline-flex; }
  .nav--open {
    background: var(--color-ink);
    border-bottom-color: rgba(246, 237, 224, 0.08);
  }
  .nav--open .nav__links {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 16px var(--gutter) 24px;
    background: var(--color-ink);
    border-bottom: 1px solid rgba(246, 237, 224, 0.08);
  }
  .nav--open .nav__links .nav__link,
  .nav--open .nav__links .nav__cta {
    padding: 14px 0;
    width: 100%;
    border-left: 0; border-right: 0; border-top: 0;
    border-bottom: 1px solid rgba(246, 237, 224, 0.05);
  }
}

/* -------- Hero -------- */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--color-ink);
  color: var(--color-parchment);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 140px var(--gutter) 120px;
  overflow: hidden;
}
.hero__top-bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--color-rust);
}
.hero__noise {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.96  0 0 0 0 0.93  0 0 0 0 0.88  0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-size: 200px 200px;
  opacity: 0.06;
  mix-blend-mode: screen;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  max-width: 900px;
}
.hero__eyebrow {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--color-rust);
  margin: 0 0 56px;
  white-space: nowrap;
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-parchment);
  letter-spacing: -0.025em;
  font-size: clamp(64px, 11vw, 152px);
  line-height: 0.95;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero__title-line { display: block; }
.hero__title-on {
  font-family: var(--font-italic);
  font-style: italic;
  font-weight: 400;
  color: var(--color-dust);
  font-size: clamp(40px, 7vw, 88px);
  line-height: 1.4;
  letter-spacing: 0;
}
.hero__rule {
  width: 40px;
  height: 1.5px;
  background: var(--color-rust);
  margin: 36px 0 22px;
  border: 0;
}
.hero__tagline {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--color-dust);
  margin: 0 0 56px;
}
.hero__platforms {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}
.hero__platform {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border: 1px solid var(--color-parchment);
  color: var(--color-parchment);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: transparent;
  transition: background 200ms var(--ease-out), color 200ms var(--ease-out);
}
.hero__platform:hover { background: var(--color-parchment); color: var(--color-ink); }
.hero__platform svg { width: 16px; height: 16px; }

.hero__meta {
  position: absolute;
  left: 0; right: 0; bottom: 36px;
  text-align: center;
  font-family: var(--font-body);
  font-size: 10px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--color-dust);
  padding: 14px var(--gutter) 0;
  border-top: 1px solid rgba(246, 237, 224, 0.08);
  max-width: 720px;
  margin: 0 auto;
}
.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 84px;
  width: 1px;
  height: 40px;
  background: var(--color-rust);
  transform: translateX(-50%);
  animation: scroll-pulse 2.6s ease-in-out infinite;
}
@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; transform: translate(-50%, -6px); }
  50%      { opacity: 1;   transform: translate(-50%, 0); }
}

@media (max-width: 720px) {
  .hero { min-height: 100svh; padding-top: 120px; padding-bottom: 140px; }
  .hero__eyebrow { margin-bottom: 36px; font-size: 9px; letter-spacing: 0.32em; }
  .hero__tagline { margin-bottom: 40px; }
  .hero__meta { bottom: 24px; font-size: 9px; letter-spacing: 0.28em; }
  .hero__scroll { bottom: 70px; }
}

/* -------- Transition band (Section 2) -------- */
.transition-band {
  height: 60px;
  background: var(--color-parchment);
}

/* -------- Subscribe block (Section 6) -------- */
.subscribe {
  background: var(--color-ink);
  color: var(--color-parchment);
  padding: clamp(96px, 12vh, 140px) 0;
  text-align: center;
}
.subscribe__inner {
  max-width: 580px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.subscribe__headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--color-parchment);
  margin: 0 0 18px;
  text-wrap: balance;
}
.subscribe__sub {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-dust);
  margin: 0 0 36px;
}
.subscribe__platforms {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 0 0 40px;
}
.subscribe__divider {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 13px;
  color: var(--color-dust);
  margin: 0 0 16px;
  letter-spacing: 0.04em;
}
.subscribe__form {
  display: flex;
  gap: 0;
  border: 1px solid var(--color-parchment);
  background: var(--color-parchment);
}
.subscribe__input {
  flex: 1;
  min-width: 0;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-ink);
  background: transparent;
  border: 0;
  outline: none;
  padding: 14px 18px;
}
.subscribe__input::placeholder { color: var(--color-dust); }
.subscribe__button {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 12px 22px;
  border: 0;
  background: var(--color-rust);
  color: var(--color-parchment);
  cursor: pointer;
  transition: background 180ms var(--ease-out);
}
.subscribe__button:hover { background: var(--color-rust-deep); }
.subscribe__button:disabled { opacity: 0.6; cursor: progress; }
.subscribe__disclaimer {
  font-family: var(--font-body);
  font-size: 11px;
  color: var(--color-dust);
  opacity: 0.6;
  margin: 14px 0 0;
  letter-spacing: 0.06em;
}
.subscribe__status {
  margin: 18px 0 0;
  font-family: var(--font-body);
  font-size: 14px;
  min-height: 22px;
}
.subscribe__status--error  { color: var(--color-rust); }
.subscribe__status--success {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 18px;
  color: var(--color-parchment);
  line-height: 1.5;
  margin: 8px 0 0;
}
@media (max-width: 520px) {
  .subscribe__form { flex-direction: column; align-items: stretch; }
  .subscribe__input { padding: 14px 18px; border-bottom: 1px solid var(--color-rule); }
  .subscribe__button { width: 100%; padding: 14px 22px; }
}

/* -------- Footer -------- */
.footer {
  background: var(--color-ink);
  color: var(--color-parchment);
  border-top: 1px solid var(--color-rust);
  padding: 56px 0 28px;
}
.footer__inner {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: start;
}
.footer__brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.005em;
  color: var(--color-parchment);
  margin: 0 0 16px;
}
.footer__meta {
  font-family: var(--font-body);
  font-size: 11px;
  color: var(--color-dust);
  line-height: 1.7;
  letter-spacing: 0.04em;
}
.footer__meta a { color: var(--color-dust); }
.footer__meta a:hover { color: var(--color-parchment); }
.footer__links {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}
.footer__link {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-dust);
}
.footer__link:hover { color: var(--color-parchment); }
.footer__sep {
  color: var(--color-dust);
  opacity: 0.5;
  user-select: none;
}
.footer__bottom {
  max-width: var(--col-wide);
  margin: 36px auto 0;
  padding: 18px var(--gutter) 0;
  border-top: 1px solid rgba(217, 201, 181, 0.2);
  font-family: var(--font-body);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-dust);
  opacity: 0.7;
  text-align: center;
}
@media (max-width: 640px) {
  .footer__inner { grid-template-columns: 1fr; }
  .footer__links { justify-content: flex-start; }
}