/* Hyde Island — Financial/Archival Design */

:root {
  --paper: #EDE8D0;
  --paper-dark: #E0D9BC;
  --green: #1C3829;
  --green-mid: #2D5240;
  --gold: #9B7722;
  --gold-light: #C9A84C;
  --ink: #1A1918;
  --ink-muted: #5C5A4E;
  --border: #C4B48A;
  --rule: #D4C89A;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background-color: var(--paper);
  background-image:
    repeating-linear-gradient(
      transparent,
      transparent 27px,
      var(--rule) 27px,
      var(--rule) 28px
    ),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
  line-height: 1.85;
  min-height: 100vh;
}

/* ── Nav ── */
.nav {
  background: var(--green);
  border-bottom: 3px solid var(--gold);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  height: 56px;
  gap: 0;
}
.nav-brand {
  color: var(--gold-light);
  text-decoration: none;
  font-size: 1rem;
  font-weight: bold;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-right: auto;
  white-space: nowrap;
}
.nav-brand:hover { color: #fff; }

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-links > li > a,
.nav-links > li > button {
  display: block;
  padding: 0 1rem;
  height: 56px;
  line-height: 56px;
  color: #C8D8C8;
  text-decoration: none;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: none;
  border: none;
  cursor: pointer;
  font-family: Georgia, serif;
  white-space: nowrap;
}
.nav-links > li > a:hover,
.nav-links > li > button:hover { color: var(--gold-light); }

.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 56px;
  left: 0;
  background: var(--green);
  border: 1px solid var(--gold);
  border-top: none;
  min-width: 260px;
  list-style: none;
  z-index: 200;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.nav-dropdown-menu li a {
  display: block;
  padding: 0.55rem 1.1rem;
  color: #C8D8C8;
  text-decoration: none;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav-dropdown-menu li a:hover { background: var(--green-mid); color: var(--gold-light); }
.nav-dropdown-menu .menu-part-label {
  display: block;
  padding: 0.6rem 1.1rem 0.2rem;
  color: var(--gold);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  pointer-events: none;
}
.nav-dropdown:hover .nav-dropdown-menu { display: block; }

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--gold-light);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0 0.5rem;
  margin-left: auto;
}

@media (max-width: 768px) {
  .nav-hamburger { display: block; }
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--green);
    border-bottom: 2px solid var(--gold);
    padding: 0.5rem 0;
    align-items: flex-start;
  }
  .nav-links.open { display: flex; }
  .nav-links > li { width: 100%; }
  .nav-links > li > a,
  .nav-links > li > button { height: auto; line-height: 1.4; padding: 0.6rem 1.2rem; }
  .nav-dropdown-menu {
    position: static;
    display: block;
    box-shadow: none;
    border: none;
    border-left: 3px solid var(--gold);
    margin-left: 1.2rem;
  }
}

/* ── Page Layout ── */
main { max-width: 760px; margin: 0 auto; padding: 2.5rem 1.5rem 4rem; }

.page-header { margin-bottom: 2rem; border-bottom: 2px solid var(--border); padding-bottom: 1.5rem; }
.tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
h1 { font-size: 2rem; line-height: 1.25; color: var(--green); margin-bottom: 0.5rem; }
.subtitle { font-size: 1.05rem; color: var(--ink-muted); font-style: italic; margin-top: 0.4rem; }

/* ── Home / Part Index ── */
.part-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}
@media (max-width: 580px) { .part-grid { grid-template-columns: 1fr; } }

.part-card {
  display: block;
  text-decoration: none;
  background: var(--paper-dark);
  border: 1px solid var(--border);
  border-left: 4px solid var(--gold);
  padding: 1.1rem 1.2rem;
  transition: border-color 0.15s, background 0.15s;
}
.part-card:hover { background: #D8D0B0; border-left-color: var(--green); }
.part-card .part-num {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.3rem;
}
.part-card h3 { font-size: 0.95rem; color: var(--green); margin-bottom: 0.3rem; }
.part-card p { font-size: 0.8rem; color: var(--ink-muted); line-height: 1.4; margin: 0; }

/* Chapter card grid on part index pages */
.chapter-grid { display: flex; flex-direction: column; gap: 0; margin-top: 2rem; }
.chapter-card {
  display: block;
  text-decoration: none;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--rule);
  display: flex;
  gap: 1rem;
  align-items: baseline;
  transition: background 0.12s;
}
.chapter-card:hover { background: var(--paper-dark); }
.chapter-card .ch-num {
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.08em;
  flex-shrink: 0;
  width: 2.2rem;
}
.chapter-card .ch-title { font-size: 0.95rem; color: var(--green); }
.chapter-card .ch-excerpt { font-size: 0.8rem; color: var(--ink-muted); margin-top: 0.15rem; line-height: 1.35; }

/* ── Chapter Content ── */
.breadcrumb {
  font-size: 0.72rem;
  color: var(--ink-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--gold); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

.chapter-number {
  font-size: 3.5rem;
  color: var(--rule);
  line-height: 1;
  margin-bottom: 0.2rem;
  font-weight: bold;
  letter-spacing: -0.02em;
}

.chapter-body p {
  margin-bottom: 1.25rem;
  text-align: justify;
}

.pull-quote {
  border-left: 5px solid var(--gold);
  margin: 2rem 0;
  padding: 0.75rem 0 0.75rem 1.5rem;
  font-style: italic;
  font-size: 1.05rem;
  color: var(--green);
  line-height: 1.6;
}
.pull-quote cite {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  font-style: normal;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
}

.key-sources {
  background: var(--paper-dark);
  border: 1px solid var(--border);
  border-top: 3px solid var(--green);
  padding: 1rem 1.25rem;
  margin-top: 2rem;
  font-size: 0.78rem;
  color: var(--ink-muted);
}
.key-sources strong { color: var(--green); display: block; margin-bottom: 0.5rem; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; }
.key-sources ul { list-style: none; padding: 0; }
.key-sources li { padding: 0.2rem 0; border-bottom: 1px solid var(--rule); }
.key-sources li:last-child { border-bottom: none; }

/* ── Chart ── */
.chart-wrap {
  background: var(--paper-dark);
  border: 1px solid var(--border);
  padding: 1.25rem;
  margin: 2rem 0;
}
.chart-wrap h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green);
  margin-bottom: 0.75rem;
}
.chart-wrap .chart-note {
  font-size: 0.72rem;
  color: var(--ink-muted);
  margin-top: 0.5rem;
  font-style: italic;
}

/* ── Chapter Nav ── */
.chapter-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  gap: 1rem;
  flex-wrap: wrap;
}
.chapter-nav a {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  color: var(--green);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  background: var(--paper-dark);
  transition: background 0.12s;
}
.chapter-nav a:hover { background: var(--paper); border-color: var(--gold); }
.chapter-nav .nav-prev::before { content: "\2190\00a0"; }
.chapter-nav .nav-next::after { content: "\00a0\2192"; }

/* ── Divider ── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}
.section-rule {
  text-align: center;
  color: var(--gold);
  font-size: 0.85rem;
  letter-spacing: 0.4em;
  margin: 2rem 0;
}

/* ── Part Header ── */
.part-header {
  text-align: center;
  padding: 2.5rem 0 2rem;
  border-bottom: 2px solid var(--border);
  margin-bottom: 2rem;
}
.part-header .part-label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.part-header h1 { font-size: 1.9rem; color: var(--green); }
.part-header .part-subtitle { font-style: italic; color: var(--ink-muted); margin-top: 0.5rem; font-size: 0.95rem; }

/* ── References ── */
.ref-section h3 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--gold); margin: 1.75rem 0 0.6rem; border-bottom: 1px solid var(--rule); padding-bottom: 0.3rem; }
.ref-item { font-size: 0.82rem; color: var(--ink-muted); padding: 0.3rem 0 0.3rem 1.5rem; text-indent: -1.5rem; line-height: 1.55; }

/* ── Intro box ── */
.intro-box {
  background: var(--green);
  color: #C8D8C8;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
  border-left: 5px solid var(--gold);
  font-size: 0.9rem;
  line-height: 1.7;
}
.intro-box strong { color: var(--gold-light); }

/* ── Footer ── */
.site-footer {
  background: var(--green);
  border-top: 3px solid var(--gold);
  color: #8AAA8A;
  text-align: center;
  padding: 1.25rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}
.site-footer a { color: var(--gold); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-links { margin-top: 0.4rem; }
.footer-links span { margin: 0 0.4rem; }