/* ============================================================
   Design tokens
   ============================================================ */
:root{
  --paper:        #F5F2EA;
  --paper-raised: #FBF9F3;
  --ink:          #211F1A;
  --ink-soft:     #5B584E;
  --ink-faint:    #8B876F;
  --line:         #DED6C3;
  --line-strong:  #C9BFA4;
  --accent:       #7C2A2A;      /* oxblood — references, verse numbers, active states */
  --accent-soft:  #9C5A5A;
  --available:    #3F5D49;      /* muted forest — available content */
  --available-bg: #E7EDE3;
  --unavailable:  #B7AF97;      /* dim — not yet available */
  --focus:        #1B5FA6;

  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans:  "Source Sans 3", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --radius: 3px;
  --max-w: 680px;
  --topbar-h: 56px;
  --tabbar-h: 60px;
}

@media (prefers-color-scheme: dark){
  :root{
    --paper:        #171613;
    --paper-raised: #1D1B17;
    --ink:          #EDE9DD;
    --ink-soft:     #B7B2A0;
    --ink-faint:    #837E6C;
    --line:         #34312A;
    --line-strong:  #45402F;
    --accent:       #D08B8B;
    --accent-soft:  #B76E6E;
    --available:    #8FBFA0;
    --available-bg: #223228;
    --unavailable:  #524E40;
    --focus:        #6FA8E6;
  }
}

*, *::before, *::after{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; }

:focus-visible{
  outline:2px solid var(--focus);
  outline-offset:2px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; transition-duration:0.001ms !important; }
}

/* ============================================================
   App shell
   ============================================================ */
.app{
  min-height:100%;
  display:flex;
  flex-direction:column;
}

.topbar{
  position:sticky; top:0; z-index:20;
  height:var(--topbar-h);
  display:flex; align-items:center; gap:8px;
  padding:0 8px;
  background:color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.topbar__back, .topbar__search{
  width:40px; height:40px;
  display:flex; align-items:center; justify-content:center;
  background:none; border:none; color:var(--ink);
  border-radius:50%;
  cursor:pointer;
}
.topbar__back[hidden], .topbar__search[hidden]{ display:none; }
.topbar__back:hover, .topbar__search:hover{ background:var(--line); }
.topbar__title{
  flex:1;
  font-family:var(--serif);
  font-weight:600;
  font-size:1.15rem;
  letter-spacing:0.01em;
  color:var(--ink);
}

.view{
  flex:1;
  width:100%;
  max-width:var(--max-w);
  margin:0 auto;
  padding:20px 18px calc(var(--tabbar-h) + 32px);
}

.tabbar{
  position:sticky; bottom:0; z-index:20;
  display:flex;
  height:var(--tabbar-h);
  padding-bottom:env(safe-area-inset-bottom);
  background:color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter:saturate(140%) blur(8px);
  border-top:1px solid var(--line);
}
.tabbar__item{
  flex:1;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:2px;
  color:var(--ink-faint);
  font-size:0.72rem;
}
.tabbar__item.is-active{ color:var(--accent); }

.toast{
  position:fixed; left:50%; bottom:calc(var(--tabbar-h) + 14px);
  transform:translateX(-50%);
  background:var(--ink); color:var(--paper);
  padding:10px 16px; border-radius:20px;
  font-size:0.85rem;
  z-index:50;
  box-shadow:0 4px 18px rgba(0,0,0,.25);
}

/* ============================================================
   Typography helpers
   ============================================================ */
h1, h2, h3{ font-family:var(--serif); margin:0; }
.eyebrow-label{ /* deliberately unused: no tracked-out caps eyebrows per design guidance */ }

.section-title{
  font-family:var(--sans);
  font-weight:600;
  font-size:0.78rem;
  color:var(--ink-soft);
  margin:0 0 10px;
}

/* ============================================================
   Home
   ============================================================ */
.home-hero{
  padding:6px 0 22px;
  border-bottom:1px solid var(--line);
  margin-bottom:22px;
}
.home-hero__ref{
  font-family:var(--serif);
  font-size:2.1rem;
  line-height:1.15;
  font-weight:600;
  margin:0 0 6px;
}
.home-hero__meta{
  color:var(--ink-soft);
  font-size:0.92rem;
  margin:0 0 16px;
}
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:11px 18px;
  border-radius:999px;
  border:1px solid var(--ink);
  background:var(--ink);
  color:var(--paper);
  font-size:0.92rem;
  font-weight:600;
  cursor:pointer;
}
.btn--ghost{
  background:transparent; color:var(--ink); border-color:var(--line-strong);
}
.btn--sm{ padding:8px 14px; font-size:0.82rem; }

.row-list{ display:flex; flex-direction:column; }
.row-list__item{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:14px 2px;
  border-bottom:1px solid var(--line);
}
.row-list__item:last-child{ border-bottom:none; }
.row-list__ref{ font-family:var(--serif); font-size:1.05rem; }
.row-list__sub{ font-size:0.82rem; color:var(--ink-soft); margin-top:2px; }
.row-list__chev{ color:var(--ink-faint); flex:none; }

.home-section{ margin-bottom:30px; }
.home-section:last-child{ margin-bottom:0; }

.empty{
  padding:30px 4px;
  color:var(--ink-soft);
  font-size:0.95rem;
  line-height:1.5;
}
.empty strong{ color:var(--ink); display:block; margin-bottom:6px; font-family:var(--serif); font-size:1.1rem; }

/* ============================================================
   Books list
   ============================================================ */
.testament-group{ margin-bottom:26px; }
.book-row{
  display:flex; align-items:center; justify-content:space-between;
  padding:13px 2px;
  border-bottom:1px solid var(--line);
  cursor:pointer;
}
.book-row:last-child{ border-bottom:none; }
.book-row__name{ font-size:1rem; }
.book-row__count{
  font-size:0.78rem; color:var(--ink-faint);
}
.book-row.is-empty .book-row__name{ color:var(--ink-faint); }
.book-row__count.has-content{ color:var(--available); font-weight:600; }

/* ============================================================
   Chapter grid
   ============================================================ */
.book-heading{
  font-size:1.6rem;
  margin-bottom:4px;
}
.book-subheading{
  color:var(--ink-soft);
  font-size:0.9rem;
  margin-bottom:20px;
}
.chapter-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(46px, 1fr));
  gap:8px;
}
.chapter-cell{
  aspect-ratio:1;
  display:flex; align-items:center; justify-content:center;
  border-radius:var(--radius);
  border:1px solid var(--line);
  font-family:var(--serif);
  font-size:0.95rem;
  color:var(--unavailable);
  background:transparent;
  cursor:default;
}
.chapter-cell.is-available{
  color:var(--paper-raised);
  background:var(--available);
  border-color:var(--available);
  cursor:pointer;
  font-weight:600;
}
.chapter-cell.is-available:hover{ background:color-mix(in srgb, var(--available) 85%, black); }

.passage-list{ margin-top:26px; }
.passage-list__title{ margin-bottom:10px; }

/* ============================================================
   Search
   ============================================================ */
.search-box{
  display:flex; align-items:center; gap:10px;
  border:1px solid var(--line-strong);
  border-radius:10px;
  padding:11px 14px;
  margin-bottom:22px;
  background:var(--paper-raised);
}
.search-box input{
  flex:1; border:none; background:none; outline:none;
  font-size:1rem; color:var(--ink); font-family:var(--sans);
}
.search-box svg{ color:var(--ink-faint); flex:none; }

.search-result{
  padding:14px 2px;
  border-bottom:1px solid var(--line);
  cursor:pointer;
}
.search-result:last-child{ border-bottom:none; }
.search-result__ref{ font-family:var(--serif); font-size:1.02rem; margin-bottom:4px; }
.search-result__snippet{
  font-size:0.87rem; color:var(--ink-soft); line-height:1.45;
}
.search-result__snippet mark{
  background:none; color:var(--accent); font-weight:600;
}

/* ============================================================
   Reader
   ============================================================ */
.reader-header{
  margin-bottom:22px;
}
.reader-header__ref{
  font-size:1.7rem;
  margin-bottom:4px;
}
.reader-header__nav{
  display:flex; justify-content:space-between; gap:10px;
  margin-top:18px;
}

.reader-section{ margin-bottom:34px; }
.reader-section:last-child{ margin-bottom:8px; }

.reader-section__label{
  font-family:var(--sans);
  font-weight:600;
  font-size:0.72rem;
  letter-spacing:0.06em;
  color:var(--accent);
  margin-bottom:12px;
  text-transform:uppercase;
}

.scripture{
  font-family:var(--serif);
  font-size:1.14rem;
  line-height:1.75;
  color:var(--ink);
}
.scripture__verse{ margin:0 0 2px; }
.scripture__num{
  font-family:var(--sans);
  color:var(--accent);
  font-weight:700;
  font-size:0.72em;
  vertical-align:0.5em;
  margin-right:5px;
}

.prose{
  font-size:0.98rem;
  line-height:1.7;
  color:var(--ink-soft);
  max-width:65ch;
}

.vbv-entry{
  margin-bottom:20px;
  padding-left:14px;
  border-left:2px solid var(--line-strong);
}
.vbv-entry__num{
  font-family:var(--serif);
  font-weight:600;
  color:var(--ink);
  font-size:0.95rem;
  margin-bottom:4px;
}
.vbv-entry__text{
  font-size:0.98rem; line-height:1.7; color:var(--ink-soft);
  max-width:65ch;
}

/* ============================================================
   Misc
   ============================================================ */
.skeleton{
  height:14px; border-radius:4px;
  background:linear-gradient(90deg, var(--line) 25%, var(--line-strong) 37%, var(--line) 63%);
  background-size:400% 100%;
  animation:shimmer 1.4s ease infinite;
  margin-bottom:10px;
}
@keyframes shimmer{
  0%{ background-position:100% 50%; }
  100%{ background-position:0 50%; }
}

@media (min-width:760px){
  .view{ padding-top:32px; }
  .home-hero__ref{ font-size:2.5rem; }
}