@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800;900&family=Lato:wght@400;700&display=swap');

:root {
  --bg-deep: #03050F;
  --bg-navy: #0B1046;
  --bg-navy-2: #0B1E6F;
  --blue: #3E74C2;
  --blue-glow: #6FA3E8;
  --gold: #F3D26B;
  --gold-dim: #C9A24C;
  --wine: #BC7B8C;
  --wine-dark: #7D4670;
  --cream: #EDD8CA;
  --green: #2FD97C;
  --text: #E9EEFB;
  --text-dim: #A9B3D0;
  --card-bg: rgba(255,255,255,0.035);
  --card-border: rgba(111,163,232,0.22);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Lato', sans-serif;
  color: var(--text);
  background:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(62,116,194,0.35), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 10%, rgba(188,123,140,0.18), transparent 55%),
    linear-gradient(180deg, var(--bg-deep) 0%, #050818 100%);
  min-height: 100vh;
}

h1, h2, h3, .logo-link { font-family: 'Montserrat', sans-serif; }

a { color: var(--blue-glow); }

/* ---------- Nav ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(3,5,15,0.75);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(111,163,232,0.18);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.logo-link {
  color: var(--gold);
  font-weight: 800;
  text-decoration: none;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo { height: 30px; border-radius: 6px; box-shadow: 0 0 12px rgba(243,210,107,0.35); }

.nav-links { display: flex; gap: 6px; flex-wrap: wrap; }
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 20px;
  transition: all 0.2s ease;
}
.nav-links a:hover, .nav-links a.activo {
  color: var(--bg-deep);
  background: var(--gold);
}
.nav-whatsapp {
  background: rgba(47,217,124,0.12) !important;
  color: var(--green) !important;
  border: 1px solid rgba(47,217,124,0.4);
}
.nav-whatsapp:hover {
  background: var(--green) !important;
  color: var(--bg-deep) !important;
}
.nav-calc {
  background: linear-gradient(135deg, rgba(243,210,107,0.18), rgba(62,116,194,0.18)) !important;
  color: var(--gold) !important;
  border: 1px solid rgba(243,210,107,0.5);
  animation: pulso-dorado 2.6s ease-in-out infinite;
}
.nav-calc:hover {
  background: var(--gold) !important;
  color: var(--bg-deep) !important;
  animation: none;
}
@keyframes pulso-dorado {
  0%, 100% { box-shadow: 0 0 0 rgba(243,210,107,0); }
  50% { box-shadow: 0 0 14px rgba(243,210,107,0.55); }
}

/* ---------- Layout ---------- */
.contenido { max-width: 860px; margin: 0 auto; padding: 0 18px 70px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 56px 20px 60px;
  text-align: center;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 600px 400px at 50% 0%, rgba(243,210,107,0.14), transparent 65%);
  pointer-events: none;
}
.hero-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(220px, 340px) 1fr;
  gap: 40px;
  align-items: center;
  text-align: left;
  position: relative;
}
.portada-wrap { text-align: center; }
.portada-img {
  max-width: 100%;
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 0 0 1px rgba(111,163,232,0.25), 0 20px 60px rgba(0,0,0,0.55), 0 0 80px rgba(62,116,194,0.25);
  animation: flotar 6s ease-in-out infinite;
}
@keyframes flotar {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}
.hero h1 {
  font-size: 2.1rem;
  margin: 0 0 10px;
  background: linear-gradient(90deg, #fff, var(--blue-glow) 60%, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.15;
}
.hero .subtitulo { color: var(--text-dim); font-size: 1.05rem; margin-bottom: 22px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }

.badge-fila { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0; }
.badge {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-dim);
  font-size: 0.8rem;
  padding: 6px 12px;
  border-radius: 20px;
}
.badge strong { color: var(--gold); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-family: 'Lato', sans-serif;
  padding: 13px 24px;
  border-radius: 10px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }
.btn-primario {
  background: linear-gradient(135deg, var(--gold), var(--gold-dim));
  color: var(--bg-deep);
  box-shadow: 0 6px 22px rgba(243,210,107,0.35);
}
.btn-primario:hover { box-shadow: 0 10px 30px rgba(243,210,107,0.5); }
.btn-secundario {
  background: rgba(111,163,232,0.1);
  color: var(--blue-glow);
  border-color: var(--card-border);
}
.btn-secundario:hover { background: rgba(111,163,232,0.2); box-shadow: 0 8px 24px rgba(62,116,194,0.25); }
.btn-donativo {
  background: rgba(188,123,140,0.12);
  color: #E9AFC0;
  border-color: rgba(188,123,140,0.4);
}
.btn-donativo:hover { background: rgba(188,123,140,0.22); box-shadow: 0 8px 24px rgba(188,123,140,0.3); }
.btn-calc {
  background: linear-gradient(135deg, var(--gold), var(--blue));
  color: var(--bg-deep);
  box-shadow: 0 6px 22px rgba(243,210,107,0.4);
  animation: pulso-boton 2.6s ease-in-out infinite;
}
.btn-calc:hover { box-shadow: 0 10px 34px rgba(243,210,107,0.6); animation: none; }
@keyframes pulso-boton {
  0%, 100% { box-shadow: 0 6px 22px rgba(243,210,107,0.35); }
  50% { box-shadow: 0 6px 30px rgba(243,210,107,0.6), 0 0 40px rgba(62,116,194,0.35); }
}
.boton-descarga, .boton-donativo { all: unset; } /* legado: neutralizado, ver .btn */

/* ---------- Promo calculadora (extra del libro) ---------- */
.seccion-calc {
  padding: 40px 26px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(243,210,107,0.08), rgba(62,116,194,0.1));
  border: 1px solid rgba(243,210,107,0.35);
  box-shadow: 0 0 50px rgba(243,210,107,0.08), inset 0 0 30px rgba(62,116,194,0.06);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.seccion-calc::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 500px 260px at 50% 0%, rgba(243,210,107,0.16), transparent 65%);
  pointer-events: none;
}
.seccion-calc .etiqueta-extra {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--bg-deep);
  background: var(--gold);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.seccion-calc h2 {
  font-size: 1.6rem;
  margin: 0 0 10px;
  background: linear-gradient(90deg, var(--gold), var(--blue-glow));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.seccion-calc p { color: var(--text-dim); max-width: 560px; margin: 0 auto 22px; }

/* ---------- Secciones ---------- */
.seccion { padding: 50px 0; border-top: 1px solid rgba(255,255,255,0.06); }
.seccion-titulo-h2 {
  font-size: 1.5rem;
  margin-bottom: 6px;
  color: #fff;
}
.seccion-desc { color: var(--text-dim); margin-bottom: 28px; }

.atmosfera-grid {
  display: grid;
  grid-template-columns: minmax(180px, 280px) 1fr;
  gap: 30px;
  align-items: center;
}
.atmosfera-img {
  width: 100%;
  border-radius: 14px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(111,163,232,0.2);
}
@media (max-width: 620px) {
  .atmosfera-grid { grid-template-columns: 1fr; }
}

.grid-aprende {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}
.card-aprende {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 18px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card-aprende:hover {
  transform: translateY(-4px);
  border-color: var(--blue-glow);
  box-shadow: 0 10px 30px rgba(62,116,194,0.25);
}
.card-aprende .icono { font-size: 1.6rem; margin-bottom: 8px; display: block; }
.card-aprende p { margin: 0; color: var(--text); font-size: 0.95rem; }

/* ---------- Reproductor ---------- */
.reproductor {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 16px 18px;
  margin: 20px 0;
  backdrop-filter: blur(6px);
}
.escuchar-label { margin: 0 0 10px; font-weight: 700; color: var(--gold); font-size: 0.92rem; }
audio { border-radius: 8px; }
audio::-webkit-media-controls-panel { background: rgba(255,255,255,0.04); }

.control-velocidad { display: flex; align-items: center; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.velocidad-label { font-size: 0.82rem; color: var(--text-dim); margin-right: 4px; }
.btn-velocidad {
  font-family: 'Lato', sans-serif;
  font-size: 0.8rem;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,0.03);
  color: var(--text-dim);
  border-radius: 14px;
  padding: 4px 11px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.btn-velocidad.activo, .btn-velocidad:hover {
  background: var(--gold);
  color: var(--bg-deep);
  border-color: var(--gold);
}

.control-saltos { display: flex; gap: 8px; margin-top: 8px; }
.btn-salto {
  font-family: 'Lato', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  border: 1px solid rgba(111,163,232,0.35);
  background: rgba(111,163,232,0.08);
  color: var(--blue-glow);
  border-radius: 10px;
  padding: 6px 14px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.btn-salto:hover { background: var(--blue); color: #fff; }

/* ---------- Reproductor flotante ---------- */
.reproductor-flotante {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translate(-50%, 120%);
  z-index: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: min(560px, calc(100vw - 24px));
  background: linear-gradient(135deg, rgba(11,16,70,0.92), rgba(11,30,111,0.92));
  border: 1px solid rgba(243,210,107,0.4);
  border-radius: 30px;
  padding: 8px 16px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.55), 0 0 24px rgba(243,210,107,0.18);
  backdrop-filter: blur(10px);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  pointer-events: none;
}
.reproductor-flotante.visible {
  transform: translate(-50%, 0);
  opacity: 1;
  pointer-events: auto;
}
.flot-titulo {
  color: var(--text-dim);
  font-size: 0.78rem;
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: none;
}
.flot-btn {
  border: none;
  background: rgba(255,255,255,0.08);
  color: var(--text);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  font-size: 0.85rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.15s ease;
}
.flot-btn.flot-play {
  background: var(--gold);
  color: var(--bg-deep);
  width: 40px;
  height: 40px;
  font-size: 1rem;
}
.flot-btn.flot-atras, .flot-btn.flot-adelante { width: auto; padding: 0 10px; border-radius: 16px; font-size: 0.72rem; }
.flot-btn:hover { filter: brightness(1.25); }
.flot-tiempo { color: var(--text-dim); font-size: 0.75rem; white-space: nowrap; flex-shrink: 0; }
@media (min-width: 480px) {
  .flot-titulo { display: block; }
}

/* ---------- Programa / lista de módulos ---------- */
.lista-modulos {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
}
.lista-modulos a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--card-bg);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--card-border);
  height: 100%;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.lista-modulos a:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.4), 0 0 20px rgba(243,210,107,0.15);
}
.lista-modulos .num {
  background: linear-gradient(135deg, var(--blue), var(--bg-navy-2));
  color: #fff;
  font-weight: 800;
  font-family: 'Montserrat', sans-serif;
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.85rem;
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(62,116,194,0.4);
}
.lista-modulos .titulo-mod { font-size: 0.92rem; line-height: 1.3; }

/* ---------- Página de módulo ---------- */
.banda-modulo {
  background: linear-gradient(135deg, var(--bg-navy) 0%, var(--bg-navy-2) 100%);
  border: 1px solid rgba(111,163,232,0.3);
  padding: 20px 22px;
  border-radius: 14px;
  margin: 24px 0 18px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}
.banda-modulo h1 { color: var(--gold); margin: 0; font-size: 1.4rem; }

.objetivo-titulo, .cierre-titulo, .seccion-titulo, .clase-titulo { color: #fff; margin-top: 30px; }
.clase-titulo { border-bottom: 2px solid var(--gold); padding-bottom: 8px; }
.cierre-titulo { color: var(--green); }
.contenido p { color: var(--text); line-height: 1.6; }

.cita {
  border-left: 4px solid var(--gold);
  padding: 12px 18px;
  font-style: italic;
  background: var(--card-bg);
  border-radius: 0 10px 10px 0;
  margin: 16px 0 4px;
  color: #fff;
}
.cita-autor { color: var(--gold-dim); font-weight: 700; margin-top: 0; font-size: 0.9rem; }

.bloque-etiqueta { font-weight: 700; margin-top: 18px; font-family: 'Montserrat', sans-serif; }
.lbl-investigacion { color: var(--blue-glow); }
.lbl-actividad { color: var(--gold); }
.lbl-reflexion { color: var(--wine); }
.lbl-contenido { color: #fff; }
.en-bloque-lbl-contenido {
  background: rgba(255,255,255,0.045);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 14px 16px;
}

.meta { color: var(--text-dim); font-style: italic; font-size: 0.88rem; }
.regla { border: none; border-top: 1px solid rgba(255,255,255,0.1); margin: 30px 0; }
.figura-grafica {
  margin: 18px 0;
  text-align: center;
}
.figura-grafica img {
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  box-shadow: 0 12px 30px rgba(0,0,0,0.4);
}
.figura-pendiente {
  background: rgba(243,210,107,0.08);
  border: 1px dashed var(--gold-dim);
  color: var(--text-dim);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.88rem;
}

.tabla-datos { border-collapse: collapse; width: 100%; margin: 14px 0; font-size: 0.88rem; overflow: hidden; border-radius: 8px; }
.tabla-datos th { background: var(--bg-navy-2); color: #fff; padding: 8px 10px; text-align: left; }
.tabla-datos td { padding: 8px 10px; border-bottom: 1px solid rgba(255,255,255,0.08); color: var(--text); }
.tabla-datos tr:nth-child(even) td { background: rgba(255,255,255,0.02); }

.lista-videos { list-style: none; padding: 0; }
.lista-videos li {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-left: 4px solid var(--blue);
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 10px;
}
.lista-videos a { color: var(--blue-glow); text-decoration: none; font-weight: 700; }
.lista-videos a:hover { text-decoration: underline; }
.video-nota { color: var(--text-dim); font-size: 0.85rem; }

.nav-modulos {
  display: flex;
  justify-content: space-between;
  margin-top: 44px;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,0.08);
  gap: 10px;
  flex-wrap: wrap;
}
.nav-modulos a {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  transition: all 0.15s ease;
}
.nav-modulos a:hover { border-color: var(--gold); color: var(--gold); }
.nav-indice { color: var(--gold) !important; }

.piefoot {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-dim);
  padding: 30px 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: 20px;
}

@media (max-width: 720px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero h1 { font-size: 1.6rem; }
  .hero-ctas { justify-content: center; }
}
@media (max-width: 480px) {
  .contenido { padding: 0 12px 50px; }
}