/* =========================================================
   Leitor bíblico — moderno minimalista
   ========================================================= */

:root {
  --bg: #fafaf7;
  --surface: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-mute: #8a8a85;
  --rule: #e8e6df;
  --accent: #b85c38;
  --accent-soft: #f4ebe4;

  --font-display: "Fraunces", "Cormorant Garamond", Georgia, serif;
  --font-body: "Inter Tight", "IBM Plex Sans", system-ui, sans-serif;
  --font-num: "JetBrains Mono", ui-monospace, monospace;

  --measure: 36rem;
  --radius: 6px;
  --t: 200ms cubic-bezier(.2,.6,.2,1);
}

html.dark {
  --bg: #111110;
  --surface: #181816;
  --ink: #ececea;
  --ink-soft: #b8b8b3;
  --ink-mute: #6e6e68;
  --rule: #2a2a27;
  --accent: #d68a64;
  --accent-soft: #2a201b;
}

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,700&family=Inter+Tight:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--t), color var(--t);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule);
}

.brand {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.topbar-actions { display: flex; gap: .5rem; }

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  transition: background var(--t), color var(--t);
}
.icon-btn:hover { background: var(--rule); color: var(--ink); }

.theme-icon {
  width: 16px; height: 16px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, var(--ink) 0 50%, transparent 51%),
    var(--bg);
  box-shadow: inset 0 0 0 1.5px var(--ink);
}

.reader {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}

.chapter-header {
  text-align: center;
  margin-bottom: 3.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--rule);
}

.eyebrow {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 0.5rem;
}

.chapter-num {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(4rem, 12vw, 7rem);
  line-height: 1;
  margin: 0;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 144;
}

.chapter-body {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--ink);
}

.chapter-body .section {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 3rem 0 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule);
}

.chapter-body .section:first-child { margin-top: 0; }

.verse {
  margin: 0 0 0.85rem;
  position: relative;
}

.vnum {
  font-family: var(--font-num);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--ink-mute);
  vertical-align: super;
  margin-right: 0.4rem;
  user-select: none;
}

.chapter-body > .verse:first-of-type .vtext::first-letter {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 3.4em;
  float: left;
  line-height: 0.85;
  margin: 0.15em 0.08em 0 0;
  color: var(--accent);
}

.chapter-nav {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.nav-link {
  color: var(--ink-soft);
  font-weight: 500;
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius);
  transition: color var(--t), background var(--t);
}
.nav-link.prev { justify-self: start; }
.nav-link.next { justify-self: end; }
.nav-link:hover { color: var(--accent); background: var(--accent-soft); }
.nav-link.disabled {
  color: var(--ink-mute);
  opacity: 0.4;
  cursor: default;
}

.nav-index {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  transition: color var(--t), border-color var(--t);
}
.nav-index:hover { color: var(--accent); border-color: var(--accent); }

.index-main {
  max-width: 64rem;
  margin: 0 auto;
  padding: 5rem 1.5rem 6rem;
}

.index-header {
  text-align: center;
  margin-bottom: 5rem;
}

.index-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(3.5rem, 10vw, 6rem);
  line-height: 1;
  margin: 0.3rem 0 1rem;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 144;
}

.index-sub {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0;
}

.ch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.6rem;
}

.ch-card {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color var(--t), transform var(--t), background var(--t);
}
.ch-card:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-1px);
}

.ch-num {
  font-family: var(--font-num);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--accent);
  min-width: 1.8rem;
  flex-shrink: 0;
}

.ch-title {
  font-family: var(--font-display);
  font-size: 0.92rem;
  line-height: 1.35;
  color: var(--ink-soft);
  font-weight: 400;
}

@media (max-width: 600px) {
  .reader { padding: 2.5rem 1.25rem 4rem; }
  .chapter-body { font-size: 1.05rem; }
  .chapter-nav { font-size: 0.88rem; }
  .nav-index { display: none; }
  .chapter-nav { grid-template-columns: 1fr 1fr; }
  .nav-link.next { grid-column: 2; }
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--accent);
  color: var(--surface);
}

/* Capítulo vazio (placeholder) ----------------------------- */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  border: 1px dashed var(--rule);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--rule) 25%, transparent);
}
.empty-icon {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--ink-mute);
  margin: 0 0 1rem;
  opacity: 0.5;
}
.empty-title {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.75rem;
}
.empty-msg {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--ink-soft);
  max-width: 28rem;
  margin: 0 auto;
  line-height: 1.6;
}

/* Card do índice marcando capítulo pendente */
.ch-card.pending .ch-num { color: var(--ink-mute); }
.ch-card.pending .ch-title {
  font-style: italic;
  color: var(--ink-mute);
  opacity: 0.7;
}