@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Source+Serif+4:ital,wght@0,400;0,500;0,600;1,400&display=swap');

:root {
  --parchment: #eee9dd;
  --paper: #f8f4e9;
  --paper-deep: #e5ddca;
  --ink: #26231f;
  --ink-soft: #686158;
  --gold: #a77b19;
  --gold-bright: #c19a3a;
  --verdigris: #416f60;
  --plum: #4c3749;
  --oxblood: #713f34;
  --line: rgba(83, 67, 45, 0.22);
  --shadow: 0 24px 70px rgba(42, 31, 19, 0.13);
  --display: 'Cormorant Garamond', Garamond, Georgia, serif;
  --body: 'Source Serif 4', Georgia, serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 12%, rgba(167, 123, 25, 0.08), transparent 27rem),
    radial-gradient(circle at 92% 58%, rgba(65, 111, 96, 0.08), transparent 30rem),
    var(--parchment);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

img { display: block; max-width: 100%; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 50;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: white;
}

.skip-link:focus { top: 1rem; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.shell {
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 72px;
  color: var(--paper);
  font-family: var(--display);
}

.site-nav--overlay {
  position: absolute;
  inset: 0 0 auto;
  z-index: 3;
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
}

.site-nav--paper { color: var(--ink); }

.wordmark {
  text-decoration: none;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.65rem;
}

.nav-links a {
  color: inherit;
  text-decoration: none;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  opacity: 0.86;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--gold-bright);
  opacity: 1;
}

.hero {
  position: relative;
  min-height: 720px;
  isolation: isolate;
  margin-bottom: 9rem;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(15, 12, 9, 0.37) 0%, rgba(15, 12, 9, 0.03) 45%, rgba(15, 12, 9, 0.4) 100%);
}

.hero-photo {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 54% 50%;
}

.hero-card {
  position: absolute;
  left: 50%;
  bottom: -6rem;
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: 108px 1fr;
  align-items: center;
  gap: 1.7rem;
  width: min(780px, calc(100% - 3rem));
  padding: 1.5rem 2.1rem;
  background: rgba(248, 244, 233, 0.96);
  border: 1px solid rgba(167, 123, 25, 0.36);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.hero-emblem {
  width: 108px;
  height: 108px;
  aspect-ratio: 1;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.hero-name {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.45rem, 5vw, 4rem);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: 0.025em;
}

.hero-statement {
  margin: 0.55rem 0 0;
  color: var(--gold);
  font-family: var(--display);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-style: italic;
}

.section { padding: clamp(4.5rem, 9vw, 8rem) 0; }

.section--paper {
  background: rgba(248, 244, 233, 0.7);
  border-block: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.display-title {
  max-width: 950px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.8rem, 6.5vw, 5.6rem);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: end;
}

.intro-copy { color: var(--ink-soft); }

.intro-copy p { margin: 0 0 1.1rem; }

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.65rem 1.2rem;
  border: 1px solid var(--ink);
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.button:hover,
.button:focus-visible {
  background: var(--ink);
  color: var(--paper);
}

.button--gold {
  color: #fffaf0;
  background: var(--gold);
  border-color: var(--gold);
}

.button--gold:hover,
.button--gold:focus-visible {
  background: var(--ink);
  border-color: var(--ink);
}

.button--quiet,
.button--quiet:hover {
  color: var(--ink-soft);
  background: transparent;
  border-color: var(--line);
  cursor: default;
}

.feature-copy .button--quiet,
.feature-copy .button--quiet:hover {
  color: rgba(248, 244, 233, 0.74);
  border-color: rgba(248, 244, 233, 0.36);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.45fr);
  gap: 3rem;
  align-items: end;
  margin-bottom: 3rem;
}

.section-heading h2,
.book-heading {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.4rem, 5vw, 4.25rem);
  font-weight: 500;
  line-height: 1;
}

.section-heading p {
  margin: 0;
  color: var(--ink-soft);
}

.feature-lexicon {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  min-height: 420px;
  overflow: hidden;
  color: var(--paper);
  background: var(--plum);
  box-shadow: var(--shadow);
}

.lexicon-art {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 360px;
  background:
    radial-gradient(circle at 50% 48%, rgba(193, 154, 58, 0.26), transparent 36%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.05), transparent),
    #352833;
}

.lexicon-art::before,
.lexicon-art::after {
  content: '';
  position: absolute;
  width: 190px;
  height: 190px;
  border: 1px solid rgba(193, 154, 58, 0.42);
  transform: rotate(45deg);
}

.lexicon-art::after {
  width: 138px;
  height: 138px;
  transform: rotate(0);
}

.vessel-glyph {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 120px;
  height: 120px;
  color: var(--gold-bright);
  border: 3px solid var(--gold-bright);
  font-family: var(--display);
  font-size: 4.4rem;
  line-height: 1;
}

.feature-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 6vw, 5rem);
}

.feature-copy h3 {
  margin: 0 0 0.5rem;
  font-family: var(--display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 500;
  line-height: 1;
}

.feature-copy p {
  max-width: 33rem;
  color: rgba(248, 244, 233, 0.76);
}

.feature-copy .button {
  align-self: flex-start;
  border-color: rgba(248, 244, 233, 0.72);
}

.room-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.room-card {
  position: relative;
  min-height: 285px;
  padding: 2rem;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

a.room-card:hover,
a.room-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: 0 16px 40px rgba(42, 31, 19, 0.1);
}

.room-card--pending {
  background:
    linear-gradient(135deg, rgba(167, 123, 25, 0.025), transparent 52%),
    var(--paper);
}

.room-card--pending .room-access { color: var(--gold); }

.room-card h3 {
  margin: 3.8rem 0 0.4rem;
  font-family: var(--display);
  font-size: 2rem;
  font-weight: 600;
}

.room-card p {
  max-width: 30rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.room-card .room-mark {
  position: absolute;
  top: 1.6rem;
  left: 2rem;
  color: var(--gold);
  font-family: var(--display);
  font-size: 2rem;
}

.room-card .room-access {
  position: absolute;
  top: 1.75rem;
  right: 2rem;
  color: var(--ink-soft);
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.room-card--verdigris { border-top: 4px solid var(--verdigris); }
.room-card--plum { border-top: 4px solid var(--plum); }
.room-card--oxblood { border-top: 4px solid var(--oxblood); }
.room-card--gold { border-top: 4px solid var(--gold); }

.field-letter {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.8fr);
  gap: 3rem;
  align-items: center;
  padding: clamp(2.25rem, 6vw, 4.5rem);
  color: var(--paper);
  background: var(--ink);
}

.field-letter h2 {
  margin: 0 0 0.5rem;
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 500;
}

.field-letter p {
  max-width: 39rem;
  margin: 0;
  color: rgba(248, 244, 233, 0.72);
}

.formkit-form {
  width: 100% !important;
  max-width: none !important;
  margin: 0 !important;
  padding: 0 !important;
  background: transparent !important;
  border: 0 !important;
}

.formkit-form .formkit-fields {
  display: grid !important;
  grid-template-columns: 1fr 1fr auto !important;
  gap: 0.55rem !important;
  align-items: stretch !important;
  margin: 0 !important;
}

.formkit-form .formkit-field { margin: 0 !important; }

.formkit-form .formkit-input {
  width: 100% !important;
  min-height: 48px !important;
  margin: 0 !important;
  padding: 0.7rem 0.9rem !important;
  color: var(--paper) !important;
  background: transparent !important;
  border: 1px solid rgba(248, 244, 233, 0.44) !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  font: inherit !important;
}

.formkit-form .formkit-input::placeholder { color: rgba(248, 244, 233, 0.54) !important; }

.formkit-form .formkit-input:focus {
  outline: 2px solid var(--gold-bright) !important;
  outline-offset: 2px !important;
}

.formkit-form .formkit-submit {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-height: 48px !important;
  margin: 0 !important;
  padding: 0.65rem 1.2rem !important;
  color: var(--ink) !important;
  background: var(--gold-bright) !important;
  border: 1px solid var(--gold-bright) !important;
  border-radius: 0 !important;
  font-family: var(--display) !important;
  font-size: 1rem !important;
  font-weight: 600 !important;
  cursor: pointer !important;
}

.formkit-form .formkit-submit:hover,
.formkit-form .formkit-submit:focus-visible {
  color: var(--paper) !important;
  background: var(--gold) !important;
}

.formkit-form .formkit-spinner,
.formkit-form .formkit-guarantee,
.formkit-form .formkit-powered-by-convertkit-container {
  display: none !important;
}

.formkit-form .formkit-alert {
  grid-column: 1 / -1;
  margin: 0 0 0.75rem !important;
  padding: 0 !important;
  color: var(--paper) !important;
  font-size: 0.85rem !important;
  list-style: none !important;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  padding: 3rem 0 4rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
}

.site-footer p { margin: 0; }

.site-footer .closing {
  color: var(--ink);
  font-family: var(--display);
  font-size: 1.15rem;
  font-style: italic;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1rem;
  max-width: 28rem;
}

.footer-links a {
  text-decoration-color: var(--line);
  text-underline-offset: 0.2em;
}

.footer-links a:hover,
.footer-links a:focus-visible { color: var(--gold); }

/* Sovereign Biophysics book index */
.book-masthead { border-bottom: 1px solid var(--line); }

.nav-status {
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.book-hero {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.book-kicker {
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.book-title {
  margin: 1rem 0;
  font-family: var(--display);
  font-size: clamp(3.4rem, 7vw, 6.5rem);
  font-weight: 500;
  line-height: 0.84;
  letter-spacing: -0.035em;
}

.book-deck {
  max-width: 34rem;
  color: var(--ink-soft);
  font-family: var(--display);
  font-size: 1.35rem;
  font-style: italic;
}

.book-note {
  max-width: 38rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.book-cover {
  position: relative;
  min-height: 600px;
  margin: 0;
  overflow: hidden;
  background: #d9c7a7;
  box-shadow: var(--shadow);
}

.book-cover img {
  width: 100%;
  height: 100%;
  min-height: 600px;
  object-fit: cover;
  object-position: center;
}

.book-cover::after {
  content: '';
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(58, 43, 27, 0.34);
  pointer-events: none;
}

.route-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.route {
  display: block;
  padding: 1.5rem;
  background: var(--paper);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease;
}

a.route:hover,
a.route:focus-visible {
  transform: translateY(-2px);
  border-color: var(--gold);
}

.route--pending {
  background:
    linear-gradient(145deg, rgba(167, 123, 25, 0.035), transparent 58%),
    var(--paper);
}

.route .route-mark {
  color: var(--gold);
  font-family: var(--display);
  font-size: 2rem;
}

.route h3 {
  margin: 1.8rem 0 0.35rem;
  font-family: var(--display);
  font-size: 1.55rem;
}

.route p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.chapter-list {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
}

.chapter {
  display: grid;
  grid-template-columns: 72px 72px minmax(0, 1fr) auto;
  gap: 1.25rem;
  align-items: center;
  min-height: 138px;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

a.chapter:hover .chapter-title,
a.chapter:focus-visible .chapter-title { color: var(--gold); }

.chapter-number {
  color: var(--ink-soft);
  font-family: var(--display);
  font-size: 0.95rem;
  letter-spacing: 0.09em;
}

.chapter-glyph {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  color: var(--gold);
  background: rgba(248, 244, 233, 0.56);
  border: 1px solid var(--line);
  border-radius: 50%;
  font-family: var(--display);
  font-size: 1.7rem;
}

.chapter-title {
  display: block;
  font-family: var(--display);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 600;
  line-height: 1.1;
  transition: color 150ms ease;
}

.chapter-desc {
  display: block;
  max-width: 49rem;
  margin-top: 0.4rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.5;
}

.chapter-arrow {
  color: var(--gold);
  font-size: 1.4rem;
}

.chapter-status,
.pending-label {
  color: var(--gold);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}

.archive-room {
  display: block;
  min-height: 230px;
  padding: 1.5rem;
  background: var(--paper);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease;
}

a.archive-room:hover,
a.archive-room:focus-visible {
  transform: translateY(-2px);
  border-color: var(--gold);
}

.archive-room--pending {
  background:
    linear-gradient(145deg, rgba(167, 123, 25, 0.035), transparent 58%),
    var(--paper);
}

.archive-room h3 {
  margin: 2.8rem 0 0.4rem;
  font-family: var(--display);
  font-size: 1.6rem;
}

.archive-room p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.archive-room .room-mark {
  color: var(--gold);
  font-family: var(--display);
  font-size: 1.8rem;
}

.archive-room .pending-label {
  display: block;
  margin-top: 1.3rem;
}

@media (max-width: 980px) {
  .field-letter { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  .hero { min-height: 640px; }
  .intro-grid,
  .section-heading,
  .feature-lexicon,
  .book-hero { grid-template-columns: 1fr; }
  .section-heading { gap: 1rem; }
  .room-grid,
  .archive-grid { grid-template-columns: 1fr; }
  .route-grid { grid-template-columns: 1fr; }
  .book-cover,
  .book-cover img { min-height: 440px; }
}

@media (max-width: 620px) {
  .formkit-form .formkit-fields { grid-template-columns: 1fr !important; }
}

@media (max-width: 560px) {
  body { font-size: 17px; }
  .shell { width: min(100% - 2rem, 1180px); }
  .site-nav--overlay { width: calc(100% - 2rem); }
  .nav-links a:not(:last-child) { display: none; }
  .nav-status { display: none; }
  .hero {
    min-height: 590px;
    margin-bottom: 8.5rem;
  }
  .hero-photo { object-position: 56% 50%; }
  .hero-card {
    bottom: -7rem;
    grid-template-columns: 76px 1fr;
    gap: 1rem;
    width: calc(100% - 2rem);
    padding: 1.2rem;
  }
  .hero-emblem {
    width: 76px;
    height: 76px;
  }
  .hero-name { font-size: 2.1rem; }
  .hero-statement { font-size: 1.2rem; }
  .section { padding: 4.5rem 0; }
  .feature-copy { padding: 2rem 1.4rem 2.4rem; }
  .room-grid { gap: 0.75rem; }
  .room-card {
    min-height: 245px;
    padding: 1.35rem;
  }
  .room-card .room-mark { left: 1.35rem; }
  .room-card .room-access { right: 1.35rem; }
  .field-letter { padding: 2rem 1.25rem; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
  .book-title { font-size: 3.6rem; }
  .book-cover,
  .book-cover img { min-height: 330px; }
  .chapter {
    grid-template-columns: 42px 52px minmax(0, 1fr);
    gap: 0.7rem;
    min-height: 126px;
  }
  .chapter-glyph {
    width: 48px;
    height: 48px;
  }
  .chapter-arrow,
  .chapter-status { display: none; }
  .chapter-desc { font-size: 0.82rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after { transition-duration: 0.01ms !important; }
}