/* ==============================================
   Romanos 1:1-17 — Estudio exegético
   Hoja de estilos principal
   ============================================== */

/* --- 1. VARIABLES (Custom Properties) --- */
:root {
  --color-fondo: #FAF8F3;
  --color-texto: #1F1F1F;
  --color-texto-sec: #5A5A5A;
  --color-acento: #7A2E2E;
  --color-paralelos-bg: #F0EBE0;
  --color-borde: #D6D0C4;
  --color-btn-bg: #EDE8DE;
  --color-btn-hover: #DDD7CA;
  --color-footer: #888;
  --color-nota-bg: #E8E2D5;
  --color-nota-borde: #C4B99A;
}

[data-tema="oscuro"] {
  --color-fondo: #1A1A1A;
  --color-texto: #E8E4DA;
  --color-texto-sec: #A8A49A;
  --color-acento: #C99A6B;
  --color-paralelos-bg: #252525;
  --color-borde: #3A3A3A;
  --color-btn-bg: #2A2A2A;
  --color-btn-hover: #353535;
  --color-footer: #777;
  --color-nota-bg: #2A2520;
  --color-nota-borde: #5A4E3A;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-tema="claro"]) {
    --color-fondo: #1A1A1A;
    --color-texto: #E8E4DA;
    --color-texto-sec: #A8A49A;
    --color-acento: #C99A6B;
    --color-paralelos-bg: #252525;
    --color-borde: #3A3A3A;
    --color-btn-bg: #2A2A2A;
    --color-btn-hover: #353535;
    --color-footer: #777;
    --color-nota-bg: #2A2520;
    --color-nota-borde: #5A4E3A;
  }
}

/* --- 2. RESET Y BASE --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--color-fondo);
  color: var(--color-texto);
  line-height: 1.7;
  transition: background-color .3s, color .3s;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  /* Prevenir zoom accidental en iOS al enfocar inputs */
  -webkit-tap-highlight-color: transparent;
}

/* --- 3. ENCABEZADO --- */
.site-header {
  position: relative;
  text-align: center;
  padding: 3rem 1.5rem 2rem;
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
}
.site-header h1 {
  font-family: 'Crimson Pro', Georgia, serif;
  font-weight: 600;
  font-size: 2.4rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
}
.subtitulo {
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 1.15rem;
  color: var(--color-texto-sec);
  margin-bottom: 0.4rem;
}
.texto-base {
  font-size: 0.82rem;
  color: var(--color-texto-sec);
  opacity: 0.7;
  margin-bottom: 1.5rem;
}

/* --- 4. TOGGLE TEMA --- */
.btn-tema {
  position: absolute;
  top: 1.5rem;
  right: 1rem;
  background: none;
  border: 2px solid var(--color-borde);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-texto);
  transition: border-color .2s, transform .2s;
}
.btn-tema:hover { border-color: var(--color-acento); transform: scale(1.08); }
.btn-tema:focus-visible { outline: 2px solid var(--color-acento); outline-offset: 2px; }
.icono-luna { display: none; }
[data-tema="oscuro"] .icono-sol { display: none; }
[data-tema="oscuro"] .icono-luna { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-tema="claro"]) .icono-sol { display: none; }
  :root:not([data-tema="claro"]) .icono-luna { display: block; }
}

/* --- 5. BOTONES GLOBALES --- */
.controles-globales {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-global {
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.6rem 1.2rem;
  min-height: 44px;
  border: 1.5px solid var(--color-borde);
  border-radius: 6px;
  background: var(--color-btn-bg);
  color: var(--color-texto);
  cursor: pointer;
  transition: background .2s, border-color .2s, transform .15s;
}
.btn-global:hover { background: var(--color-btn-hover); border-color: var(--color-acento); }
.btn-global:active { transform: scale(0.97); }
.btn-global:focus-visible { outline: 2px solid var(--color-acento); outline-offset: 2px; }

/* --- 6. CONTENIDO PRINCIPAL --- */
.contenido {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem 1.5rem 3rem;
  width: 100%;
  flex: 1;
}

/* --- 7. BLOQUES --- */
.bloque {
  margin-bottom: 0.25rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-borde);
}
.bloque:last-child { border-bottom: none; }
.referencia-principal {
  display: block;
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-acento);
  margin-bottom: 0.4rem;
}
.versiculo {
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 1.2rem;
  line-height: 1.8;
  margin-bottom: 0.5rem;
}

/* --- 8. BOTÓN PARALELOS --- */
.btn-paralelos {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  min-height: 44px;
  border: 1.5px solid var(--color-borde);
  border-radius: 5px;
  background: transparent;
  color: var(--color-texto-sec);
  cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
  margin-top: 0.25rem;
}
.btn-paralelos:hover { color: var(--color-acento); border-color: var(--color-acento); background: var(--color-btn-bg); }
.btn-paralelos:focus-visible { outline: 2px solid var(--color-acento); outline-offset: 2px; }
.btn-paralelos-icono {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1;
  transition: transform .3s;
  display: inline-block;
}
.btn-paralelos[aria-expanded="true"] .btn-paralelos-icono { transform: rotate(45deg); }

/* --- 9. PARALELOS (desplegable) --- */
.paralelos {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .35s ease, opacity .3s ease, margin .3s ease;
  margin-top: 0;
  margin-left: 1.25rem;
  padding-left: 1rem;
  border-left: 3px solid var(--color-acento);
}
.paralelos.abierto {
  max-height: 5000px;
  opacity: 1;
  margin-top: 1rem;
}
.paralelo-item {
  background: var(--color-paralelos-bg);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  transition: background .3s;
}
.paralelo-item:last-child { margin-bottom: 0; }
.referencia {
  display: block;
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-acento);
  margin-bottom: 0.35rem;
  letter-spacing: 0.03em;
}
.paralelo-texto {
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 1rem;
  line-height: 1.75;
  font-style: italic;
}
/* Palabras clave resaltadas dentro de paralelos:
   salen de itálica + color acento para doble contraste */
.paralelo-texto strong {
  font-style: normal;
  font-weight: 600;
  color: var(--color-acento);
}

/* --- 10. NOTA EXEGÉTICA --- */
.nota-exegetica {
  background: var(--color-nota-bg);
  border: 1px solid var(--color-nota-borde);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  transition: background .3s, border-color .3s;
}
.nota-exegetica:last-child { margin-bottom: 0; }
.nota-etiqueta {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-acento);
  background: var(--color-fondo);
  border: 1px solid var(--color-nota-borde);
  border-radius: 3px;
  padding: 0.15rem 0.5rem;
  margin-bottom: 0.6rem;
}
.nota-exegetica p {
  font-family: 'Inter', sans-serif;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--color-texto);
  margin-bottom: 0.5rem;
}
.nota-exegetica p:last-child { margin-bottom: 0; }
.nota-exegetica ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 0.5rem;
}
.nota-exegetica li {
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 0.95rem;
  line-height: 1.7;
  padding-left: 1.2rem;
  position: relative;
  margin-bottom: 0.35rem;
}
.nota-exegetica li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-acento);
}

/* --- 11. FOOTER --- */
.site-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: 0.78rem;
  color: var(--color-footer);
  border-top: 1px solid var(--color-borde);
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
  line-height: 1.6;
}
.site-footer a { color: var(--color-acento); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color .2s; }
.site-footer a:hover { border-bottom-color: var(--color-acento); }
.site-footer p { margin-bottom: 0.3rem; }

/* --- 12. RESPONSIVE: TABLETS --- */
@media (max-width: 768px) {
  .site-header { padding: 2.5rem 1.25rem 1.5rem; }
  .site-header h1 { font-size: 2rem; }
  .contenido { padding: 1rem 1.25rem 2.5rem; }
  .versiculo { font-size: 1.12rem; }
}

/* --- 13. RESPONSIVE: MÓVILES --- */
@media (max-width: 480px) {
  .site-header {
    padding: 1.5rem 1rem 1.25rem;
    /* Espacio para el botón de tema sin que choque con el título */
    padding-right: 3.5rem;
  }
  .site-header h1 {
    font-size: 1.6rem;
    text-align: left;
  }
  .subtitulo {
    font-size: 0.95rem;
    text-align: left;
  }
  .texto-base {
    text-align: left;
    margin-bottom: 1.25rem;
  }
  .controles-globales {
    justify-content: flex-start;
  }
  .contenido {
    padding: 0.5rem 1rem 2rem;
  }
  .bloque {
    padding: 1rem 0;
  }
  .versiculo {
    font-size: 1.15rem;
    line-height: 1.75;
  }
  .paralelos {
    margin-left: 0.25rem;
    padding-left: 0.75rem;
  }
  .paralelo-item {
    padding: 0.85rem 1rem;
  }
  .paralelo-texto {
    font-size: 1.05rem;
  }
  .nota-exegetica {
    padding: 0.85rem 1rem;
  }
  .nota-exegetica p {
    font-size: 0.92rem;
  }
  .nota-exegetica li {
    font-size: 0.95rem;
  }
  .btn-tema {
    top: 1rem;
    right: 0.75rem;
    width: 44px;
    height: 44px;
  }
  .site-footer {
    padding: 1.5rem 1rem;
    font-size: 0.82rem;
  }
}

/* --- 14. RESPONSIVE: MÓVILES MUY PEQUEÑOS (320px) --- */
@media (max-width: 360px) {
  .site-header h1 {
    font-size: 1.4rem;
  }
  .subtitulo {
    font-size: 0.88rem;
  }
  .btn-global {
    font-size: 0.8rem;
    padding: 0.5rem 0.9rem;
  }
  .versiculo {
    font-size: 1rem;
  }
}

/* --- 15. CONTEXTO HISTÓRICO --- */
.contexto-historico {
  max-width: 740px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.btn-contexto {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--color-fondo-bloque);
  border: 1.5px solid var(--color-borde);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  font-family: 'Crimson Pro', Georgia, serif;
}
.btn-contexto:hover {
  border-color: var(--color-acento);
  background: var(--color-btn-bg);
}
.btn-contexto:focus-visible {
  outline: 2px solid var(--color-acento);
  outline-offset: 2px;
}
.btn-contexto-titulo {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-texto);
}
.btn-contexto-icono {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-acento);
  transition: transform .3s;
  display: inline-block;
  width: 1.5rem;
  text-align: center;
}
.btn-contexto[aria-expanded="true"] .btn-contexto-icono {
  transform: rotate(45deg);
}
/* Panel colapsable del contexto */
.contexto-contenido {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .5s ease, opacity .4s ease, margin .3s ease;
  margin-top: 0;
}
.contexto-contenido.abierto {
  max-height: 5000px;
  opacity: 1;
  margin-top: 1rem;
}
/* Subsecciones */
.contexto-subseccion {
  margin-bottom: 1.5rem;
}
.contexto-subseccion:last-child {
  margin-bottom: 0;
}
.contexto-subseccion h3 {
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-acento);
  margin: 0 0 0.5rem 0;
}
.contexto-subseccion ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin: 0;
}
.contexto-subseccion li {
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-texto);
  margin-bottom: 0.4rem;
}
.contexto-subseccion li:last-child {
  margin-bottom: 0;
}
@media (max-width: 480px) {
  .contexto-historico {
    padding: 0 1rem;
  }
  .btn-contexto {
    padding: 0.85rem 1rem;
  }
  .btn-contexto-titulo {
    font-size: 1.15rem;
  }
}

/* --- 16. DIVISORES DE SECCIÓN --- */
.divisor-seccion {
  border-top: none;
  padding: 2rem 0 1.25rem;
  margin: 0.5rem 0 0.25rem;
  text-align: center;
}
.divisor-seccion:first-of-type {
  margin-top: 0;
  border-top: 1.5px solid var(--color-acento);
  padding-top: 2.5rem;
}
.divisor-rango {
  display: block;
  font-family: 'Inter', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-acento);
  margin-bottom: 0.4rem;
}
.divisor-titulo {
  display: block;
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-texto);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}
.divisor-descripcion {
  display: block;
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 0.95rem;
  font-style: italic;
  color: var(--color-texto-sec);
  line-height: 1.65;
  max-width: 560px;
  margin: 0 auto;
}
@media (max-width: 480px) {
  .divisor-seccion {
    padding: 2rem 0 1.25rem;
    text-align: left;
  }
  .divisor-titulo {
    font-size: 1.25rem;
  }
  .divisor-descripcion {
    font-size: 0.92rem;
  }
}

/* --- 17. TOOLTIPS GRIEGOS --- */
.tooltip-griego {
  position: relative;
  cursor: help;
  border-bottom: 1.5px dotted var(--color-acento);
  font-style: normal;
}
/* Contenedor del tooltip (oculto por defecto) */
.tooltip-contenido {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  width: 320px;
  max-width: 90vw;
  background: var(--color-fondo);
  border: 1.5px solid var(--color-acento);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  box-shadow: 0 4px 20px var(--color-sombra), 0 0 0 1px var(--color-borde);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s ease, visibility .25s ease;
  z-index: 100;
  pointer-events: none;
  font-family: 'Inter', sans-serif;
  font-style: normal;
  font-size: 0.82rem;
  line-height: 1.55;
  text-align: left;
  color: var(--color-texto);
}
/* Flecha del tooltip */
.tooltip-contenido::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 20px;
  border: 7px solid transparent;
  border-top-color: var(--color-acento);
}
/* Mostrar en hover y focus (para teclado y tap móvil) */
.tooltip-griego:hover .tooltip-contenido,
.tooltip-griego:focus .tooltip-contenido,
.tooltip-griego:focus-within .tooltip-contenido {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
/* Palabra griega dentro del tooltip */
.tooltip-palabra {
  display: block;
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-acento);
  margin-bottom: 0.35rem;
}
/* Definición dentro del tooltip */
.tooltip-definicion {
  display: block;
  color: var(--color-texto);
}

/* Backdrop oscuro para móvil (controlado por JS) */
.tooltip-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 99;
  -webkit-tap-highlight-color: transparent;
}
.tooltip-backdrop.visible {
  display: block;
}

/* En móvil: bottom sheet con animación slide-up */
@media (max-width: 480px) {
  /* Desactivar hover/focus en móvil — se controla por JS */
  .tooltip-griego:hover .tooltip-contenido,
  .tooltip-griego:focus .tooltip-contenido,
  .tooltip-griego:focus-within .tooltip-contenido {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
  .tooltip-contenido {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    top: auto;
    width: 100%;
    max-width: 100vw;
    border-radius: 16px 16px 0 0;
    border: none;
    border-top: 2px solid var(--color-acento);
    padding: 1.2rem 1.25rem 1.5rem;
    box-shadow: 0 -4px 30px rgba(0,0,0,0.2);
    transform: translateY(100%);
    transition: transform .3s ease, opacity .3s ease, visibility .3s ease;
    z-index: 200;
    font-size: 0.88rem;
    line-height: 1.6;
  }
  /* Barra de arrastre decorativa */
  .tooltip-contenido::before {
    content: '';
    display: block;
    width: 36px;
    height: 4px;
    background: var(--color-borde);
    border-radius: 2px;
    margin: 0 auto 0.75rem;
  }
  .tooltip-contenido::after {
    display: none;
  }
  /* Clase activa controlada por JS */
  .tooltip-contenido.tooltip-activo {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }
  .tooltip-palabra {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
  }
}

/* --- 17. MISC --- */
::selection { background: var(--color-acento); color: #fff; }
:focus:not(:focus-visible) { outline: none; }
:focus-visible { outline: 2px solid var(--color-acento); outline-offset: 2px; }