/* Fuente limpia para lectura (como 2026) */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;800&display=swap');

:root{
  --warm:#ffa92d;
  --denim:#2f557f;
  --cyan:#31ffeb;
  --bg-light:#F5EFE0;
  --text:#2f557f;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:'Merriweather',serif;background:var(--bg-light);color:var(--text)}

/* Hero image wrapper (no header on index) */
.hero-img-wrap{margin:0;line-height:0;background:var(--denim)}
.hero-img{display:block;width:100%;height:auto}

/* Language inline block (below hero) */
.lang-inline{display:flex;gap:.75rem;justify-content:center;align-items:center;flex-wrap:wrap;margin:1rem auto .75rem;padding:0 .75rem}
.lang-link{display:inline-flex;align-items:center;gap:.4rem;padding:.4rem .65rem;border-radius:.5rem;text-decoration:none;background:rgba(47,85,127,.10);color:var(--denim);font-weight:600}
.lang-link:hover{background:rgba(47,85,127,.18)}
.lang-link.active{background:var(--denim);color:#fff}
.lang-link .flag{font-size:1.15rem;line-height:1}
.theme-toggle-inline{border:none;padding:.35rem .6rem;border-radius:.5rem;background:var(--denim);color:#fff;cursor:pointer;font-size:1.1rem}
.theme-toggle-inline:hover{background:var(--warm)}

/* Downloads block */
.download-pdfs{text-align:center;margin:1rem auto;max-width:900px;padding:0 1rem}
.download-buttons{display:inline-flex;gap:.75rem;flex-wrap:wrap;justify-content:center;margin-top:.5rem}
.btn{background:var(--denim);color:#fff;padding:.5rem 1rem;text-decoration:none;border-radius:.5rem;display:inline-flex;align-items:center;gap:.5rem}
.btn:hover{background:var(--warm)}

.progress-container{text-align:center;padding:1rem}
progress{width:80%;height:1.5rem;appearance:none;border-radius:.75rem;background:#d8d8d8;overflow:hidden}
progress::-webkit-progress-bar{background:#d8d8d8;border-radius:.75rem}
progress::-webkit-progress-value{background:var(--denim);border-radius:.75rem}
progress::-moz-progress-bar{background:var(--denim);border-radius:.75rem}

/* Cards */
.cards{margin:1.5rem auto 2rem;display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));max-width:1000px;padding:0 1rem}
.card{position:relative;background:#fff;padding:1rem;border:2px solid var(--warm);border-radius:.5rem;text-decoration:none;color:var(--text)}
.card:hover{transform:translateY(-2px)}
.card input.read-toggle{position:absolute;top:.5rem;right:.5rem}

/* ===== Chapter page (como 2026) ===== */
.header{background:var(--denim);position:relative;padding:1rem 0}
.logo-img{position:absolute;left:1rem;top:50%;transform:translateY(-50%);height:50px}
.header-center{text-align:center}
.header-center h1,.header-center h2{color:#fff;margin:0;font-family:'Poppins',sans-serif}
.header-center h1{font-size:1.5rem}
.header-center h2{font-size:1rem}

/* Banderas separadas en header de capítulos */
.lang-switch{
  position:absolute;right:3rem;top:50%;transform:translateY(-50%);
  display:flex;align-items:center;gap:.5rem;
}
.lang-switch a{
  display:inline-flex;align-items:center;justify-content:center;
  padding:.15rem .35rem;border-radius:.375rem;
  background:rgba(255,255,255,.08);color:#fff;text-decoration:none;
}
.lang-switch a:hover{background:rgba(255,255,255,.18)}
.theme-toggle{position:absolute;right:.75rem;top:50%;transform:translateY(-50%);font-size:1.3rem;background:none;border:none;color:#fff;cursor:pointer}

/* Contenedor de capítulo */
.chapter-wrapper{
  max-width:980px;margin:2rem auto;display:block;padding:0 1rem;
}

/* Tarjeta de lectura (misma estética 2026) */
.chapter-text{
  background:#ffffff;                                  /* tarjeta blanca */
  color:#2b2b2b;                                       /* texto neutro */
  border-radius:10px;
  padding:1.75rem 2rem;
  box-shadow:0 10px 24px rgba(0,0,0,.05), 0 2px 6px rgba(0,0,0,.04);
  font-family:'Poppins',system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  font-size:1.125rem;                                   /* ~18px */
  line-height:1.75;
  letter-spacing:.005em;
  max-width:700px;margin:0 auto;
}
.chapter-text h2{
  margin:.25rem 0 1rem;
  font-size:1.75rem;
  font-weight:800;
  color:var(--denim);
}
.chapter-text p{margin-bottom:.95rem}
.chapter-text .intro{
  margin-bottom:1rem;
  font-weight:600;
  color:#1d3656;
}

.reflection{max-width:900px;margin:2rem auto;padding:0 1rem}
.reflection label{display:block;font-weight:600;margin-bottom:.5rem}
.reflection textarea{width:100%;min-height:150px;padding:1rem;font-size:1rem;line-height:1.5;border:1px solid #ccc;border-radius:.5rem;box-sizing:border-box}
.nav-chapter{display:flex;justify-content:space-between;align-items:center;margin:2rem auto;max-width:900px;padding:0 1rem}
.footer{text-align:center;padding:1rem;background:var(--denim);color:#fff}

/* Dark mode coherente */
body.dark{background:#171717;color:#E2E2E2}
body.dark .chapter-text{
  background:#1f1f1f;color:#e6e6e6;box-shadow:none;
}
body.dark .chapter-text h2{color:var(--cyan)}
body.dark .chapter-text .intro{color:#cfe8ff}
body.dark .reflection textarea{background:#1F1F1F;color:#E2E2E2;border-color:#444}

/* Mobile tweaks */
@media(max-width:600px){
  .lang-inline{gap:.5rem}
  .lang-link{padding:.35rem .55rem}
  .download-pdfs{margin:.75rem auto}
  .cards{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
  .chapter-text{padding:1.25rem 1rem}
}

/* Barra superior para volver al índice en capítulos */
.chapter-topbar{
  max-width: 900px;
  margin: .75rem auto 0;
  padding: 0 1rem;
  display: flex;
  justify-content: flex-start;
}
.chapter-topbar .btn{
  /* ya tienes .btn; esto asegura buen contraste en fondo claro/oscuro */
  background: var(--denim);
  color: #fff;
}
body.dark .chapter-topbar .btn{
  background: #345b86;
  color: #fff;
}

/* Centrar el botón respecto a la caja de lectura (.chapter-text) */
.chapter-topbar{
  max-width: 700px;      /* igual que .chapter-text */
  margin: .75rem auto 0; /* centra la barra */
  padding: 0 1rem;
  display: flex;
  justify-content: center; /* centra el botón dentro */
}

.chapter-topbar .btn{
  background: var(--denim);
  color: #fff;
}

body.dark .chapter-topbar .btn{
  background: #345b86;
  color: #fff;
}

/* ======= LECTOR PAGINADO ======= */
.reader-viewport{
  position: relative;
  overflow: hidden;
  min-height: clamp(320px, 55vh, 68vh);
  margin-top: .5rem;
}

.reader-page{
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 220ms ease, transform 220ms ease;
  overflow-y: auto;
  padding-right: .25rem; /* leve respiro para scrollbar */
}
.reader-page.active{
  position: relative;
  opacity: 1;
  transform: translateY(0);
}

.reader-controls{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  margin-top: .75rem;
}

.reader-status{
  font-weight: 600;
  opacity: .85;
}

.reader-progress{
  margin-top: .5rem;
  width: 100%;
  height: .5rem;
  background: #e6e6e6;
  border-radius: .5rem;
  overflow: hidden;
}
.reader-progress > span{
  display: block;
  height: 100%;
  width: 0%;
  background: var(--denim);
  transition: width 220ms ease;
}

/* Oscuro */
body.dark .reader-progress{ background: #2e2e2e; }
body.dark .reader-progress > span{ background: var(--cyan); }

/* Centrar el botón "Volver al índice" con la caja de lectura */
.chapter-topbar{
  max-width: 700px;
  margin: .75rem auto 0;
  padding: 0 1rem;
  display: flex;
  justify-content: center;
}
.chapter-topbar .btn{
  background: var(--denim);
  color: #fff;
}
body.dark .chapter-topbar .btn{
  background: #345b86;
  color: #fff;
}

/* --- Fix header móvil: apilar sin solapes --- */
@media (max-width: 600px) {
  .header{
    padding: .6rem .75rem;
    display: grid;
    grid-template-columns: 1fr auto;   /* logo a la izq, banderas/tema a la der */
    grid-row-gap: .5rem;
    align-items: center;
  }

  /* Quitar posiciones absolutas en móvil */
  .logo-img,
  .lang-switch,
  .theme-toggle{
    position: static !important;
    transform: none !important;
  }

  .logo-img{
    height: 36px;            /* ajusta si lo quieres un poco más grande/pequeño */
    grid-column: 1 / 2;
  }

  /* Banderas + tema a la derecha en la primera fila */
  .lang-switch{
    grid-column: 2 / 3;
    display: flex;
    gap: .5rem;              /* más aire entre banderas */
    justify-content: flex-end;
    align-items: center;
  }
  .lang-switch a{ font-size: 1.1rem; line-height: 1; }

  .theme-toggle{
    margin-left: .4rem;      /* pequeño espacio respecto a las banderas */
    font-size: 1.1rem;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
  }

  /* El título ocupa toda la segunda fila */
  .header-center{
    grid-column: 1 / -1;     /* de extremo a extremo */
    text-align: center;
  }
  .header-center h1{
    font-size: 1.25rem;      /* baja un poco para que no invada */
    line-height: 1.2;
    margin: 0;
  }
  .header-center h2{
    font-size: .9rem;
    line-height: 1.2;
    margin: .15rem 0 0;
  }
}

/* Afinado extra en pantallas muy estrechas */
@media (max-width: 380px){
  .logo-img{ height: 32px; }
  .header-center h1{ font-size: 1.15rem; }
  .header-center h2{ font-size: .85rem; }
  .lang-switch{ gap: .4rem; }
}

/* --- Header 100% centrado en móviles (sin cambiar HTML) --- */
@media (max-width: 560px){
  .header{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    text-align:center;
    padding:.8rem .75rem 1rem;
    row-gap:.55rem;
  }

  /* Asegurar que nada quede absoluto en móvil */
  .logo-img, .lang-switch, .theme-toggle{
    position: static !important;
    transform: none !important;
  }

  .logo-img{ height:42px; margin:0 auto; }

  .header-center{ order:2; }
  .header-center h1{ font-size:1.3rem; line-height:1.2; margin:0; }
  .header-center h2{ font-size:.95rem; line-height:1.25; margin:.1rem 0 0; }

  /* Banderas centradas */
  .lang-switch{
    order:3;
    display:flex;
    gap:.65rem;              /* separa banderas */
    justify-content:center;
    align-items:center;
  }
  .lang-switch a{ font-size:1.15rem; line-height:1; }

  /* Luna centrada en su propia línea */
  .theme-toggle{
    order:4;
    font-size:1.15rem;
    background:none;
    border:none;
    color:#fff;
    cursor:pointer;
  }
}

@media (max-width:380px){
  .logo-img{ height:36px; }
  .header-center h1{ font-size:1.2rem; }
  .header-center h2{ font-size:.9rem; }
  .lang-switch{ gap:.5rem; }
}

/* ===== Countdown v4.1 (fondo blanco, números azules, borde amarillo + halo) ===== */
.countdown-wrap{
  display:flex;justify-content:center;margin:1rem auto 1.25rem;padding:0 1rem
}
.countdown{
  --cd-accent: var(--denim, #2f557f); /* azul institucional */
  --cd-warm:  var(--warm,  #ffa92d);  /* amarillo institucional */
  text-align:center;
}

/* Encabezado arriba de cajas */
.countdown-heading{
  margin:.1rem 0 .35rem;
  font-weight:700;
  color:var(--cd-accent);
  font-size:clamp(1rem,2.2vw,1.25rem);
}

.cd-grid{
  display:flex;gap:.75rem;flex-wrap:wrap;justify-content:center;align-items:stretch
}
.cd-box{
  background:#fff;                          /* fondo blanco */
  border:3px solid var(--cd-warm);          /* borde amarillo más grueso */
  border-radius:.75rem;
  padding:.6rem .75rem;min-width:92px;

  /* Halo suave en amarillo + sombra base */
  outline:2px solid rgba(255,169,45,.25);
  outline-offset:2px;
  box-shadow:0 8px 16px rgba(0,0,0,.06);
}
.cd-box:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 22px rgba(0,0,0,.08);
}

.cd-value{
  color:var(--cd-accent);                   /* números azules */
  display:block;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1;
  font-size:clamp(1.6rem,3vw,2.4rem)
}
.cd-label{
  color:var(--cd-accent);                   /* etiquetas azules */
  display:block;margin-top:.25rem;font-size:.8rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase
}

.countdown-subtitle{
  margin-top:.75rem;font-weight:700;text-wrap:balance;
  font-size:clamp(1rem,2.4vw,1.35rem);
}

/* Separación extra bajo el hero */
.hero-img-wrap + .countdown-wrap{margin-top:1rem}

/* Modo oscuro */
body.dark .cd-box{
  background:#1f1f1f;
  border-color:var(--cd-warm);
  outline-color:rgba(255,169,45,.35);       /* halo un poco más visible en dark */
  box-shadow:0 10px 22px rgba(0,0,0,.40);
}
body.dark .cd-value,
body.dark .cd-label{ color:#9ec7ff }        /* azul claro para contraste */
body.dark .countdown-heading{ color:#E2E2E2 }