:root {
  --parchment: #f5ede0;
  --parchment-dark: #ecdcc9;
  --parchment-mid: #f0e4d0;
  --ink: #1c1410;
  --ink-light: #3d2e22;
  --ink-mid: #5a4332;
  --gold: #8b6914;
  --gold-light: #c9a84c;
  --gold-pale: #f0dfa0;
  --rule: #c4a87a;
  --shadow: rgba(28,20,16,0.15);
  --col-wcf: #2c4a2e;
  --col-wlc: #1e3a5c;
  --col-wsc: #5c1e1e;
  --col-wcf-light: #e8f0e8;
  --col-wlc-light: #e8eef5;
  --col-wsc-light: #f5e8e8;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background-color: var(--parchment);
  color: var(--ink);
  font-family: 'EB Garamond', Georgia, serif;
  font-size: 17px;
  line-height: 1.7;
  min-height: 100vh;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 1000; opacity: 0.5;
}

/* ── HEADER ── */
header {
  text-align: center; padding: 3rem 2rem 2rem;
  border-bottom: 2px solid var(--rule);
  background: linear-gradient(180deg, var(--parchment-dark) 0%, var(--parchment) 100%);
  position: relative;
}
header::before, header::after {
  content: '✦'; font-size: 1rem; color: var(--gold);
  position: absolute; top: 50%; transform: translateY(-50%);
}
header::before { left: 2rem; } header::after { right: 2rem; }
.header-ornament {
  font-size: 0.75rem; color: var(--gold); letter-spacing: 0.4em;
  text-transform: uppercase; font-family: 'Cinzel', serif;
  margin-bottom: 0.6rem; opacity: 0.8;
}
h1 {
  font-family: 'Cinzel', serif;
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700; color: var(--ink);
  letter-spacing: 0.05em; line-height: 1.2; margin-bottom: 0.35rem;
}
.subtitle {
  font-family: 'Cormorant Garamond', serif; font-style: italic;
  font-size: 1.1rem; color: var(--ink-mid);
}
.rule-ornament {
  display: flex; align-items: center; gap: 1rem;
  justify-content: center; margin: 0.8rem 0;
}
.rule-ornament span { height: 1px; width: 60px; background: var(--rule); }
.rule-ornament em { font-style: normal; color: var(--gold); }

/* ── NAV ── */
.nav-panel {
  background: var(--parchment-dark);
  border-bottom: 1px solid var(--rule);
  padding: 0.9rem 1.5rem;
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 2px 8px var(--shadow);
}
.nav-inner {
  max-width: 1500px; margin: 0 auto;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
}
.nav-label {
  font-family: 'Cinzel', serif; font-size: 0.65rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-mid); white-space: nowrap;
}
.nav-selects { display: flex; gap: 0.75rem; flex-wrap: wrap; flex: 1; align-items: center; min-width: 0; }
.nav-group {
  display: flex; align-items: center; gap: 0.4rem;
  flex: 1; min-width: 0;
}
.nav-group label {
  font-family: 'Cinzel', serif; font-size: 0.6rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  white-space: nowrap; padding: 0.2em 0.5em;
  border-radius: 2px; font-weight: 700;
}
.nav-group.wcf label { color: var(--col-wcf); background: var(--col-wcf-light); border: 1px solid var(--col-wcf); }
.nav-group.wlc label { color: var(--col-wlc); background: var(--col-wlc-light); border: 1px solid var(--col-wlc); }
.nav-group.wsc label { color: var(--col-wsc); background: var(--col-wsc-light); border: 1px solid var(--col-wsc); }
select {
  flex: 1; min-width: 0; padding: 0.35rem 1.6rem 0.35rem 0.5rem;
  font-family: 'EB Garamond', serif; font-size: 0.88rem;
  background: var(--parchment); border: 1px solid var(--rule);
  border-radius: 3px; color: var(--ink); cursor: pointer; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238b6914'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 0.5rem center;
}
select:focus { outline: 2px solid var(--gold-light); outline-offset: 1px; }
.nav-actions { display: flex; gap: 0.4rem; margin-left: auto; flex-shrink: 0; }
.btn {
  font-family: 'Cinzel', serif; font-size: 0.6rem; letter-spacing: 0.12em;
  text-transform: uppercase; padding: 0.35rem 0.9rem;
  border: 1px solid var(--rule); background: var(--parchment);
  color: var(--ink-mid); cursor: pointer; border-radius: 2px;
  transition: all 0.15s; white-space: nowrap;
}
.btn:hover { background: var(--gold-pale); border-color: var(--gold); color: var(--gold); }
.btn.btn-primary { background: var(--ink); color: var(--parchment); border-color: var(--ink); }
.btn.btn-primary:hover { background: var(--ink-light); }

/* ── MAIN ── */
.main { max-width: 1500px; margin: 0 auto; padding: 1.5rem 1.5rem 4rem; }

/* ── LEGEND ── */
.legend {
  display: flex; gap: 1.5rem; flex-wrap: wrap;
  margin-bottom: 1.25rem; padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--rule);
}
.legend-item { display: flex; align-items: center; gap: 0.4rem; font-size: 0.8rem; font-family: 'Cinzel', serif; letter-spacing: 0.06em; text-transform: uppercase; }
.legend-dot { width: 10px; height: 10px; border-radius: 2px; }
.legend-dot.wcf { background: var(--col-wcf); }
.legend-dot.wlc { background: var(--col-wlc); }
.legend-dot.wsc { background: var(--col-wsc); }

/* ── HARMONY TABLE ── */
.harmony-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  animation: fadeIn 0.3s ease-out;
}

/* Sticky column headers (repeat per chapter) */
.col-header-row th {
  padding: 0.45rem 0.9rem;
  font-family: 'Cinzel', serif;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
  position: sticky;
  top: 57px;
  z-index: 9;
  border-bottom: 2px solid;
}
.col-header-row th.wcf { color: var(--col-wcf); background: var(--col-wcf-light); border-color: var(--col-wcf); }
.col-header-row th.wlc { color: var(--col-wlc); background: var(--col-wlc-light); border-color: var(--col-wlc); }
.col-header-row th.wsc { color: var(--col-wsc); background: var(--col-wsc-light); border-color: var(--col-wsc); }

/* Chapter header rows */
.ch-header-row td {
  background: var(--ink);
  color: var(--parchment);
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.6rem 1rem;
  text-align: center;
}
.ch-header-row td .ch-ornament { color: var(--gold-light); margin: 0 0.6rem; }

/* Gap before chapter headers that follow a data row (all except the first) */
.harmony-row + .ch-header-row td { border-top: 2rem solid var(--parchment); }

/* Data rows */
.harmony-row td {
  vertical-align: top;
  padding: 0.85rem 0.9rem 0.95rem;
  border: 1px solid var(--rule);
  background: var(--parchment);
  width: 33.333%;
}
.harmony-row:nth-child(even) td { background: #f9f1e7; }
.harmony-row td.empty-cell { background: var(--parchment-dark) !important; }
.harmony-row:nth-child(even) td.empty-cell { background: #e8dac8 !important; }
.harmony-row.highlighted td { outline: 3px solid var(--gold); outline-offset: -3px; }

/* Cell labels */
.cell-ref {
  font-family: 'Cinzel', serif;
  font-size: 0.57rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
  display: block;
  font-weight: 700;
  opacity: 0.7;
}
td.wcf-cell .cell-ref { color: var(--col-wcf); }
td.wlc-cell .cell-ref { color: var(--col-wlc); }
td.wsc-cell .cell-ref { color: var(--col-wsc); }
td.wlc-cell--american .cell-ref { color: var(--gold); }

/* American revision cells */
.nav-group.harmony label { color: var(--gold); background: var(--gold-pale); border: 1px solid var(--gold); }
.nav-group.harmony { flex: 0 0 auto; min-width: 0; max-width: 200px; }
td.wlc-cell--american { background: #f5ecb8 !important; }
.harmony-row:nth-child(even) td.wlc-cell--american { background: #ede4a8 !important; }
.american-badge {
  font-style: italic; font-weight: 400;
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.85em; color: var(--gold);
  letter-spacing: 0.03em; text-transform: none; opacity: 0.85;
}
.legend-dot.american { background: var(--gold); }

/* WCF paragraph text */
.wcf-text { font-size: 0.9rem; line-height: 1.75; color: var(--ink-light); text-align: justify; hyphens: auto; }
.wcf-text p { margin-bottom: 0.35rem; }
.wcf-text sup { color: var(--gold); font-size: 0.7em; }
.wcf-text table { font-size: 0.8rem; border-collapse: collapse; width: 100%; margin: 0.4rem 0; }
.wcf-text td { padding: 0.15rem 0.3rem; vertical-align: top; }
.wcf-text strong { color: var(--ink); }

.para-block { margin-bottom: 0.7rem; padding-bottom: 0.7rem; border-bottom: 1px dashed var(--rule); }
.para-block:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }

/* Q&A */
.qa-block { margin-bottom: 0.7rem; padding-bottom: 0.7rem; border-bottom: 1px dashed var(--rule); }
.qa-block:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.qa-q { font-size: 0.9rem; font-weight: 600; line-height: 1.6; margin-bottom: 0.25rem; color: var(--ink); }
.qa-q::before { content: 'Q. '; color: var(--gold); }
.qa-a { font-size: 0.88rem; line-height: 1.75; color: var(--ink-light); text-align: justify; hyphens: auto; }
.qa-a::before { content: 'A. '; color: var(--gold); font-weight: 600; }
.fn { font-size: 0.7rem; color: var(--ink-mid); margin-top: 0.35rem; opacity: 0.6; font-style: italic; line-height: 1.4; }

/* Empty cell */
.empty-dash { display: flex; align-items: center; justify-content: center; min-height: 36px; color: var(--rule); font-size: 1.3rem; font-weight: 200; }

/* ── HOME / WELCOME ── */
.welcome-state {
  text-align: center; padding: 3rem 1rem 2rem;
  max-width: 660px; margin: 0 auto;
  animation: fadeIn 0.5s ease-out;
}
.welcome-state .ornament { font-size: 1.8rem; color: var(--gold); margin-bottom: 1rem; }
.welcome-state h2 { font-family: 'Cinzel', serif; font-size: 1.2rem; letter-spacing: 0.1em; color: var(--ink); margin-bottom: 0.75rem; }
.welcome-state p { font-family: 'Cormorant Garamond', serif; font-size: 1.05rem; color: var(--ink-mid); line-height: 1.7; font-style: italic; margin-bottom: 0.7rem; }
.docs-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 0.9rem; margin-top: 2rem; text-align: left; }
.doc-card { padding: 0.8rem 0.9rem; border-radius: 3px; border: 1px solid; }
.doc-card.wcf { background: var(--col-wcf-light); border-color: var(--col-wcf); }
.doc-card.wlc { background: var(--col-wlc-light); border-color: var(--col-wlc); }
.doc-card.wsc { background: var(--col-wsc-light); border-color: var(--col-wsc); }
.doc-card h3 { font-family: 'Cinzel', serif; font-size: 0.6rem; letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 0.3rem; }
.doc-card.wcf h3 { color: var(--col-wcf); }
.doc-card.wlc h3 { color: var(--col-wlc); }
.doc-card.wsc h3 { color: var(--col-wsc); }
.doc-card p { font-size: 0.82rem; font-style: normal; color: var(--ink-mid); line-height: 1.5; }

/* ── TOC ── */
.toc-section-header {
  font-family: 'Cinzel', serif; font-size: 0.67rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--gold);
  margin: 1.75rem 0 0.7rem; padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--gold-pale);
}
.toc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px,1fr)); gap: 0.7rem; }
.toc-card {
  border: 1px solid var(--rule); border-radius: 3px;
  overflow: hidden; cursor: pointer; transition: all 0.2s; background: var(--parchment);
}
.toc-card:hover { border-color: var(--gold); box-shadow: 0 3px 10px var(--shadow); transform: translateY(-1px); }
.toc-card-header {
  padding: 0.45rem 0.75rem; font-family: 'Cinzel', serif; font-size: 0.58rem;
  letter-spacing: 0.15em; text-transform: uppercase;
  background: var(--parchment-dark); border-bottom: 1px solid var(--rule); color: var(--ink-mid);
}
.toc-card-title { padding: 0.55rem 0.75rem; font-family: 'EB Garamond', serif; font-size: 0.92rem; color: var(--ink); line-height: 1.4; }

/* ── MISC ── */
.loading {
  text-align: center; padding: 5rem 2rem;
  font-family: 'Cormorant Garamond', serif; font-style: italic;
  font-size: 1.2rem; color: var(--ink-mid);
  animation: pulse 1.5s ease-in-out infinite;
}
.page-section-label {
  font-family: 'Cinzel', serif; font-size: 0.67rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--gold);
  margin: 0 0 1rem; padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--gold-pale);
}
.page-divider { display: flex; align-items: center; gap: 0.8rem; margin: 1.5rem 0; }
.page-divider::before, .page-divider::after { content: ''; flex: 1; height: 1px; background: var(--rule); }
.page-divider span { color: var(--gold); }
footer { text-align: center; padding: 1.5rem; border-top: 1px solid var(--rule); font-size: 0.72rem; color: var(--ink-mid); font-family: 'Cinzel', serif; letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.55; }

@keyframes pulse { 0%,100%{opacity:0.4} 50%{opacity:1} }
@keyframes fadeIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }

/* ── RESPONSIVE ── */
@media(max-width:1024px) {
  .nav-inner { flex-direction: column; align-items: stretch; gap: 0.5rem; }
  .nav-mobile-header { display: flex; align-items: center; justify-content: space-between; }
  .nav-toggle {
    display: flex; flex-direction: column; gap: 4px;
    background: transparent; border: none; cursor: pointer; padding: 0.5rem;
  }
  .nav-toggle span { width: 22px; height: 2px; background: var(--gold); border-radius: 1px; transition: 0.3s; }
  .nav-content { display: none; flex-direction: column; gap: 0.8rem; }
  .nav-panel.nav-open .nav-content { display: flex; }
  .nav-panel.nav-open .nav-toggle span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-panel.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav-panel.nav-open .nav-toggle span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }
  .nav-selects { flex-direction: column; gap: 0.6rem; align-items: stretch; }
  .nav-group { width: 100%; }
  .nav-actions { margin-left: 0; justify-content: stretch; display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; margin-top: 0.4rem; }
  .btn { text-align: center; padding: 0.6rem 1rem; font-size: 0.65rem; }

  .harmony-table, .harmony-table thead, .harmony-table tbody,
  .harmony-table tr, .harmony-table th, .harmony-table td { display: block; }
  .harmony-table .col-header-row { display: none; }
  .ch-header-row td { display: block; padding: 1rem; }
  
  .harmony-row td { width: 100%; border-bottom: 1px solid rgba(196, 168, 122, 0.4); position: relative; padding-top: 2rem; }
  .harmony-row td::before {
    content: 'Westminster Standard';
    position: absolute; top: 0; left: 0; right: 0;
    padding: 0.2rem 0.9rem; font-family: 'Cinzel', serif;
    font-size: 0.55rem; letter-spacing: 0.1em; text-transform: uppercase;
    font-weight: 700; opacity: 0.6;
  }
  .harmony-row td.wcf-cell { background: var(--col-wcf-light); border-left: 4px solid var(--col-wcf); }
  .harmony-row td.wcf-cell::before { content: 'Westminster Confession of Faith'; color: var(--col-wcf); }
  .harmony-row td.wlc-cell { background: var(--col-wlc-light); border-left: 4px solid var(--col-wlc); }
  .harmony-row td.wlc-cell::before { content: 'Westminster Larger Catechism'; color: var(--col-wlc); }
  .harmony-row td.wsc-cell { background: var(--col-wsc-light); border-left: 4px solid var(--col-wsc); }
  .harmony-row td.wsc-cell::before { content: 'Westminster Shorter Catechism'; color: var(--col-wsc); }
  .harmony-row td.wlc-cell--american { background: #fdfae6; border-left-color: var(--gold); }
  .harmony-row td.wlc-cell--american::before { content: 'American Revision (1789)'; color: var(--gold); }
  
  .harmony-row td:last-child { border-bottom: 2px solid var(--rule); margin-bottom: 1.5rem; }
  .harmony-row:nth-child(even) td { background-color: inherit; } /* reset even background */

  .docs-grid { grid-template-columns: 1fr; }
  .toc-grid { grid-template-columns: 1fr; }
}

@media(min-width:1025px) {
  .nav-mobile-header .nav-toggle { display: none; }
  .nav-content { display: flex !important; align-items: center; gap: 1rem; flex: 1; }
  .nav-mobile-header { display: contents; } /* Act like they aren't there in layout */
}

@media(max-width:600px) {
  .main { padding: 0.75rem; }
  header { padding: 1.5rem 0.75rem 1rem; }
  header::before, header::after { display: none; }
  h1 { font-size: 1.35rem; }
  .subtitle { font-size: 0.9rem; }
  .wcf-text, .qa-q, .qa-a { font-size: 0.88rem; line-height: 1.6; }
  .cell-ref { font-size: 0.52rem; }
  .nav-panel { padding: 0.5rem 0.75rem; }
  .legend { gap: 0.75rem; margin-bottom: 1rem; padding-bottom: 0.6rem; }
  .legend-item { font-size: 0.65rem; }
  .ch-header-row td { font-size: 0.65rem; padding: 0.5rem; }
  .nav-label { font-size: 0.55rem; }
}