/* ==========================================================================
   Romanitas Blue Book — Landing Page
   Design tokens derived from the book's own stationery & heraldic plates:
   ivory archival paper, cathedral navy, sealing-wax burgundy, heraldic gold.
   ========================================================================== */

:root {
  --ivory:        #F1E8D3;
  --ivory-deep:   #E8DBBB;
  --paper-line:   #B99B5B;
  --ink:          #211B12;
  --ink-soft:     #4A4232;
  --navy:         #1B2A4A;
  --navy-deep:    #10192C;
  --navy-ink:     #E9E1CC;
  --burgundy:     #6B1220;
  --gold:         #A9803D;
  --gold-bright:  #C9A050;

  --font-display: 'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --font-body:    'EB Garamond', Georgia, serif;

  --rule: 1px solid var(--paper-line);
  --container: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow {
  font-family: var(--font-body);
  font-variant: small-caps;
  letter-spacing: 0.22em;
  font-size: 0.8rem;
  color: var(--gold);
  font-weight: 600;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--navy);
  margin: 0;
}

h2.section-title {
  font-size: clamp(2rem, 3.4vw, 2.8rem);
  letter-spacing: 0.01em;
}

.section-kicker {
  display: block;
  margin-bottom: 10px;
}

.rule {
  border: none;
  border-top: var(--rule);
  margin: 0;
}

.rule-thick {
  border: none;
  border-top: 3px double var(--paper-line);
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-variant: small-caps;
  letter-spacing: 0.12em;
  font-size: 1rem;
  padding: 14px 30px;
  border: 1px solid var(--navy);
  border-radius: 2px;
  text-decoration: none;
  background: transparent;
  color: var(--navy);
  transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease;
}

.btn:hover { background: var(--navy); color: var(--navy-ink); }

.btn-solid {
  background: var(--navy);
  color: var(--navy-ink);
  border-color: var(--navy);
}

.btn-solid:hover { background: var(--navy-deep); }

.btn-gold {
  border-color: var(--gold);
  color: var(--gold);
}
.btn-gold:hover { background: var(--gold); color: var(--ivory); }

/* ---------------------------------- Header ---------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(241, 232, 211, 0.94);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: var(--rule);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand img { height: 40px; width: auto; }

.brand-text { line-height: 1.1; }

.brand-text .name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 0.03em;
}

.brand-text .kind {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.24em;
  font-variant: small-caps;
  color: var(--gold);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.main-nav a {
  text-decoration: none;
  font-variant: small-caps;
  letter-spacing: 0.08em;
  font-size: 1rem;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
  padding-bottom: 3px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.main-nav a:hover { color: var(--burgundy); border-color: var(--burgundy); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--navy);
  border-radius: 2px;
  width: 42px;
  height: 38px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span { width: 20px; height: 1px; background: var(--navy); display: block; }

/* ---------------------------------- Hero ---------------------------------- */

.hero {
  padding: 64px 0 70px;
  text-align: center;
  position: relative;
}

.hero-frame {
  border-top: 3px double var(--paper-line);
  border-bottom: 3px double var(--paper-line);
  padding: 56px 20px 60px;
}

.hero-mark img {
  height: 118px;
  width: auto;
  margin: 0 auto 26px;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  letter-spacing: 0.015em;
  line-height: 1.08;
}

.hero .subtitle {
  max-width: 640px;
  margin: 22px auto 0;
  font-size: 1.2rem;
  color: var(--ink-soft);
}

.hero .scope-line {
  margin: 22px auto 0;
  font-variant: small-caps;
  letter-spacing: 0.1em;
  color: var(--gold);
  font-size: 1.05rem;
}

.hero .motto {
  margin: 30px auto 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--navy);
}

.hero-ctas {
  margin-top: 38px;
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-credit {
  margin-top: 30px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  font-variant: small-caps;
  color: var(--ink-soft);
}

/* ---------------------------------- Sections generic ---------------------------------- */

section { padding: 96px 0; }

.section-alt { background: var(--ivory-deep); }

.center { text-align: center; }

.lede {
  max-width: 720px;
  margin: 18px auto 0;
  color: var(--ink-soft);
  font-size: 1.12rem;
}

/* ---------------------------------- About / Publisher's Note ---------------------------------- */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
  margin-top: 50px;
}

.card-framed {
  border: 1px solid var(--paper-line);
  padding: 3px;
}
.card-framed-inner {
  border: 1px solid var(--paper-line);
  padding: 42px 40px;
  background: var(--ivory);
}

.pull-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.7rem;
  line-height: 1.42;
  color: var(--navy);
}

.pull-quote .cite {
  display: block;
  margin-top: 18px;
  font-family: var(--font-body);
  font-style: normal;
  font-variant: small-caps;
  letter-spacing: 0.1em;
  font-size: 0.95rem;
  color: var(--gold);
}

.about-text h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.about-text p + p { margin-top: 14px; }

/* ---------------------------------- Table of Contents ---------------------------------- */

.toc-columns {
  margin-top: 50px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 60px;
}

.toc-list { list-style: none; margin: 0; padding: 0; }

.toc-list li {
  display: flex;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px dotted var(--paper-line);
  align-items: baseline;
}

.toc-num {
  flex: 0 0 auto;
  font-family: var(--font-display);
  color: var(--gold);
  font-weight: 600;
  min-width: 2.6em;
}

.toc-title { font-size: 1.05rem; }

.toc-appendix {
  margin-top: 44px;
  padding-top: 30px;
  border-top: var(--rule);
}

.toc-appendix .eyebrow { margin-bottom: 18px; display: block; }

/* ---------------------------------- Plate Gallery ---------------------------------- */

.plate-group { margin-top: 64px; }
.plate-group:first-of-type { margin-top: 50px; }

.plate-group-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 26px;
}

.plate-group-head h3 {
  font-size: 1.35rem;
  white-space: nowrap;
}

.plate-group-head .rule { flex: 1; }

.plate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 26px;
}

.plate-card {
  background: var(--ivory);
  border: 1px solid var(--paper-line);
  padding: 18px;
  cursor: zoom-in;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.plate-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 28px rgba(27, 42, 74, 0.14);
}

.plate-card .plate-img-wrap {
  aspect-ratio: 4 / 5;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--ivory-deep);
}

.plate-card img { max-height: 100%; max-width: 100%; object-fit: contain; }

.plate-caption {
  margin-top: 14px;
  font-size: 0.92rem;
  text-align: center;
  color: var(--ink-soft);
  font-variant: small-caps;
  letter-spacing: 0.03em;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(16, 25, 44, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 40px;
}
.lightbox.open { display: flex; }
.lightbox figure { max-width: 780px; margin: 0; text-align: center; }
.lightbox img { max-height: 78vh; margin: 0 auto; border: 6px solid var(--ivory); }
.lightbox figcaption {
  margin-top: 16px;
  color: var(--navy-ink);
  font-variant: small-caps;
  letter-spacing: 0.06em;
}
.lightbox-close {
  position: absolute;
  top: 28px;
  right: 36px;
  background: none;
  border: 1px solid var(--navy-ink);
  color: var(--navy-ink);
  width: 42px;
  height: 42px;
  cursor: pointer;
  font-size: 1.3rem;
  line-height: 1;
}

/* ---------------------------------- Stewardship / Excerpt (inverted) ---------------------------------- */

.stewardship {
  background: var(--navy-deep);
  color: var(--navy-ink);
  position: relative;
}

.stewardship::before,
.stewardship::after {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold-bright), transparent);
}

.stewardship .container { padding-top: 90px; padding-bottom: 90px; }

.stewardship .eyebrow { color: var(--gold-bright); }

.stewardship blockquote {
  margin: 30px auto 0;
  max-width: 820px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  line-height: 1.5;
  text-align: center;
}

.stewardship .cite {
  display: block;
  margin-top: 26px;
  text-align: center;
  font-variant: small-caps;
  letter-spacing: 0.14em;
  color: var(--gold-bright);
}

/* ---------------------------------- Author ---------------------------------- */

.author-grid {
  margin-top: 50px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 50px;
  align-items: center;
}

.author-mark {
  border: 1px solid var(--paper-line);
  padding: 26px;
  background: var(--ivory);
  text-align: center;
}
.author-mark img { margin: 0 auto; }

.author-copy h3 { font-size: 1.7rem; margin-bottom: 6px; }
.author-copy .role {
  font-variant: small-caps;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 16px;
  display: block;
}

/* ---------------------------------- Notify ---------------------------------- */

.notify {
  text-align: center;
}

.notify .card-framed { max-width: 640px; margin: 46px auto 0; text-align: left; }

.notify-form {
  display: flex;
  gap: 14px;
  margin-top: 26px;
  flex-wrap: wrap;
}

.notify-form input[type="email"],
.notify-form input[type="text"] {
  flex: 1 1 220px;
  padding: 14px 16px;
  border: 1px solid var(--paper-line);
  background: var(--ivory);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
}

.notify-form input:focus,
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--burgundy);
  outline-offset: 2px;
}

.notify-note {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.status-pill {
  display: inline-block;
  font-variant: small-caps;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  color: var(--burgundy);
  border: 1px solid var(--burgundy);
  padding: 4px 12px;
  margin-bottom: 18px;
}

/* ---------------------------------- Footer ---------------------------------- */

.site-footer {
  background: var(--navy);
  color: var(--navy-ink);
  padding: 56px 0 34px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(233, 225, 204, 0.25);
}

.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand img { height: 44px; }
.footer-brand .name { font-family: var(--font-display); font-size: 1.3rem; }
.footer-brand .motto { font-style: italic; font-size: 0.9rem; color: var(--gold-bright); }

.footer-nav { display: flex; gap: 26px; flex-wrap: wrap; }
.footer-nav a {
  text-decoration: none;
  font-variant: small-caps;
  letter-spacing: 0.08em;
  color: var(--navy-ink);
  opacity: 0.85;
}
.footer-nav a:hover { opacity: 1; color: var(--gold-bright); }

.footer-bottom {
  margin-top: 26px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(233, 225, 204, 0.7);
}

.footer-bottom a { color: inherit; text-decoration: underline; }

/* ---------------------------------- Responsive ---------------------------------- */

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .toc-columns { grid-template-columns: 1fr; }
  .author-grid { grid-template-columns: 1fr; text-align: center; }
  .author-mark { width: 200px; margin: 0 auto; }
}

@media (max-width: 760px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .site-header.nav-open .main-nav {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--ivory);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 32px 26px;
    border-bottom: var(--rule);
    gap: 16px;
  }
  section { padding: 70px 0; }
  .hero { padding: 44px 0 50px; }
  .hero-frame { padding: 40px 16px 44px; }
}