/* Estilo plataforma (tipo Netflix / Hotmart): fondo oscuro, banner grande, filas con miniaturas.
   Letra grande igual: el público tiene 55+. */
:root{
  --fondo:#0b1410; --sup:#13201a; --sup-2:#1b2b23; --borde:#26392f;
  --verde:#3fa45b; --verde-osc:#2F6B3C; --oro:#d9b44a;
  --texto:#f1f5f2; --suave:#a3b8ab; --rojo:#e5533d;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--fondo);color:var(--texto);font-size:18px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit}
.serif{font-family:"Fraunces",Georgia,serif}

/* Barra superior */
.barra{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:14px;padding:12px 18px;background:rgba(11,20,16,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.06)}
.barra .logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.barra .logo i{width:38px;height:38px;border-radius:10px;background:#fff url(/assets/logo.png) center/34px no-repeat;flex:none}
.barra .logo b{font-size:15px;line-height:1.1;font-weight:800}
.barra .logo b small{display:block;font-weight:600;color:var(--suave);font-size:12px}
.barra nav{margin-left:auto;display:flex;gap:18px;font-size:15px;font-weight:600;color:var(--suave)}
.barra nav a{text-decoration:none}
.barra nav a.activo{color:var(--texto)}
.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--verde),var(--verde-osc));display:grid;place-items:center;font-size:18px;flex:none}
@media (max-width:560px){.barra nav{display:none}.barra .avatar{margin-left:auto}}

/* Banner principal */
.hero{position:relative;min-height:440px;display:flex;align-items:flex-end;overflow:hidden}
.hero .fondo-img{position:absolute;inset:0;background-size:cover;background-position:center 25%;transform:scale(1.04)}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,var(--fondo) 6%,rgba(11,20,16,.78) 45%,rgba(11,20,16,.25) 100%),linear-gradient(90deg,rgba(11,20,16,.85),rgba(11,20,16,0) 70%)}
.hero .dentro{position:relative;z-index:1;max-width:1100px;width:100%;margin:0 auto;padding:40px 20px 34px}
.etiqueta{display:inline-flex;align-items:center;gap:6px;background:rgba(217,180,74,.14);color:var(--oro);border:1px solid rgba(217,180,74,.35);font-size:13px;font-weight:800;letter-spacing:.8px;padding:5px 12px;border-radius:20px;margin-bottom:14px}
.hero h1{font-family:"Fraunces",Georgia,serif;font-size:44px;line-height:1.05;max-width:640px;margin-bottom:12px}
.hero p{color:var(--suave);font-size:19px;max-width:560px;margin-bottom:20px}
@media (max-width:560px){.hero{min-height:400px}.hero h1{font-size:34px}}

.progreso{max-width:440px;margin-bottom:20px}
.progreso .txt{display:flex;justify-content:space-between;font-size:15px;font-weight:700;margin-bottom:8px}
.progreso .txt span{color:var(--suave);font-weight:600}
.progreso .pista{height:10px;background:rgba(255,255,255,.12);border-radius:8px;overflow:hidden}
.progreso .pista i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--verde),var(--oro));border-radius:8px;transition:width .4s}

.boton{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;cursor:pointer;font-family:inherit;font-size:18px;font-weight:800;text-decoration:none;padding:16px 26px;border-radius:12px;background:var(--texto);color:#0b1410;transition:transform .15s}
.boton:active{transform:scale(.97)}
.boton.verde{background:var(--verde);color:#fff}
.boton.borde{background:rgba(255,255,255,.08);color:var(--texto);border:1px solid rgba(255,255,255,.18)}
@media (max-width:560px){.hero .boton{width:100%}}

/* Secciones */
.seccion{max-width:1100px;margin:0 auto;padding:10px 20px 8px}
.seccion h2{font-family:"Fraunces",Georgia,serif;font-size:26px;margin:26px 0 14px}

/* Reproductor + lista (estilo curso) */
.aula{display:grid;grid-template-columns:minmax(0,420px) 1fr;gap:26px;align-items:start}
@media (max-width:860px){.aula{grid-template-columns:1fr}}
.pantalla{background:#000;border-radius:16px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.5);border:1px solid var(--borde)}
.pantalla video{display:block;width:100%;aspect-ratio:9/16;max-height:78vh;object-fit:contain;background:#000}
.ficha{padding:18px 4px 0}
.ficha .cuando{color:var(--oro);font-size:14px;font-weight:800;letter-spacing:.6px;text-transform:uppercase}
.ficha h3{font-family:"Fraunces",Georgia,serif;font-size:28px;line-height:1.15;margin:6px 0 8px}
.ficha p{color:var(--suave);font-size:17px;margin-bottom:16px}
.ficha .acciones{display:flex;gap:10px;flex-wrap:wrap}
.ficha .acciones .boton{font-size:16px;padding:14px 18px}
.boton.hecho{background:rgba(63,164,91,.18);color:#7fd497;border:1px solid rgba(63,164,91,.5)}

.lista{display:flex;flex-direction:column;gap:10px}
.lista .titulo-lista{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:4px}
.lista .titulo-lista b{font-size:19px}
.lista .titulo-lista span{color:var(--suave);font-size:14px}
.leccion{display:flex;gap:14px;align-items:center;width:100%;text-align:left;background:var(--sup);border:1px solid var(--borde);border-radius:14px;padding:10px;cursor:pointer;color:inherit;font-family:inherit;transition:background .15s,border-color .15s}
.leccion:hover{background:var(--sup-2)}
.leccion.actual{border-color:var(--verde);background:linear-gradient(90deg,rgba(63,164,91,.16),var(--sup))}
.leccion .mini{position:relative;flex:0 0 76px;height:104px;border-radius:10px;background-size:cover;background-position:center 30%;overflow:hidden}
.leccion .mini::after{content:"▶";position:absolute;inset:0;display:grid;place-items:center;font-size:20px;color:#fff;background:rgba(0,0,0,.35)}
.leccion.actual .mini::after{content:"❚❚";font-size:16px;background:rgba(63,164,91,.45)}
.leccion .num{font-size:13px;font-weight:800;color:var(--oro);letter-spacing:.5px}
.leccion .tx{flex:1;min-width:0}
.leccion .tx b{display:block;font-size:17px;line-height:1.25;margin:2px 0 4px}
.leccion .tx span{color:var(--suave);font-size:14px}
.leccion .estado{flex:0 0 32px;height:32px;border-radius:50%;border:2px solid var(--borde);display:grid;place-items:center;font-size:15px;color:transparent}
.leccion.vista .estado{background:var(--verde);border-color:var(--verde);color:#fff}

/* Tarjetas tipo fila */
.fila{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.tarjeta{background:var(--sup);border:1px solid var(--borde);border-radius:16px;padding:20px;text-decoration:none}
.tarjeta .ic{font-size:30px;margin-bottom:10px}
.tarjeta b{display:block;font-size:18px;margin-bottom:4px}
.tarjeta span{color:var(--suave);font-size:15px}

.pie{max-width:1100px;margin:30px auto 0;padding:24px 20px 40px;border-top:1px solid var(--borde);color:var(--suave);font-size:13px;text-align:center}

/* Puerta de entrada (clave), versión oscura */
.puerta{display:none;min-height:100vh;align-items:center;justify-content:center;padding:24px 16px;background:radial-gradient(circle at 50% 0%,#1b3526,var(--fondo) 70%)}
.puerta .caja{background:var(--sup);border:1px solid var(--borde);border-radius:22px;padding:30px 22px;max-width:420px;width:100%;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.puerta .sello{width:84px;height:84px;margin:0 auto 14px;border-radius:20px;background:#fff url(/assets/logo.png) center/74px no-repeat}
.puerta h1{font-family:"Fraunces",Georgia,serif;font-size:28px;margin-bottom:6px}
.puerta p{color:var(--suave);font-size:16px;margin-bottom:18px}
.puerta input{width:100%;font-family:inherit;font-size:22px;letter-spacing:2px;text-align:center;text-transform:uppercase;padding:14px;background:var(--fondo);color:var(--texto);border:2px solid var(--borde);border-radius:12px;margin-bottom:10px}
.puerta input:focus{outline:none;border-color:var(--verde)}
.puerta .error{color:var(--rojo);font-size:15px;font-weight:600;min-height:22px;margin-bottom:6px}
.puerta .boton{width:100%}
.puerta .nota{font-size:14px;margin:16px 0 0}

html.cerrada .contenido{display:none}
html.cerrada .puerta{display:flex}

/* Tarjetas con imagen (pasos y materiales) */
.fila-img{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.timg{position:relative;display:flex;flex-direction:column;background:var(--sup);border:1px solid var(--borde);border-radius:16px;overflow:hidden;text-decoration:none;color:inherit}
.timg .foto{height:150px;background-size:cover;background-position:center}
.timg .cuerpo{padding:16px 16px 18px;display:flex;flex-direction:column;gap:6px;flex:1}
.timg .num{font-size:13px;font-weight:800;color:var(--oro);letter-spacing:.6px}
.timg b{font-size:19px;line-height:1.25}
.timg span.d{color:var(--suave);font-size:15px;flex:1}
.timg .pie-t{display:flex;gap:8px;align-items:center;margin-top:8px}
.timg .pie-t .boton{font-size:15px;padding:11px 14px}
.chk{display:inline-flex;align-items:center;gap:8px;cursor:pointer;font-size:15px;font-weight:700;color:var(--suave);user-select:none;margin-left:auto}
.chk input{appearance:none;-webkit-appearance:none;width:28px;height:28px;border-radius:50%;border:2px solid var(--borde);display:grid;place-items:center;cursor:pointer;margin:0}
.chk input:checked{background:var(--verde);border-color:var(--verde)}
.chk input:checked::after{content:"✓";color:#fff;font-size:15px;font-weight:800}
.timg.hecha{border-color:rgba(63,164,91,.6)}
.cinta{position:absolute;top:12px;left:12px;background:var(--oro);color:#1b1503;font-size:12px;font-weight:800;letter-spacing:.6px;padding:4px 10px;border-radius:8px}

/* Grilla de días / semanas */
.grilla{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.dia{position:relative;text-align:left;background:var(--sup);border:1px solid var(--borde);border-radius:14px;padding:14px 14px 16px;cursor:pointer;color:inherit;font-family:inherit;min-height:112px;display:flex;flex-direction:column;gap:4px;transition:border-color .15s,background .15s}
.dia:hover{background:var(--sup-2)}
.dia .n{font-size:13px;font-weight:800;color:var(--oro);letter-spacing:.6px}
.dia b{font-size:16px;line-height:1.25}
.dia small{color:var(--suave);font-size:13px;margin-top:auto}
.dia .ok{position:absolute;top:12px;right:12px;width:26px;height:26px;border-radius:50%;border:2px solid var(--borde);display:grid;place-items:center;font-size:13px;color:transparent}
.dia.hecho{border-color:rgba(63,164,91,.6);background:linear-gradient(160deg,rgba(63,164,91,.18),var(--sup))}
.dia.hecho .ok{background:var(--verde);border-color:var(--verde);color:#fff}
.dia.hoy{border-color:var(--oro)}
.fase{display:flex;align-items:baseline;gap:10px;margin:22px 0 10px}
.fase b{font-size:18px}
.fase span{color:var(--suave);font-size:14px}
.ayuda-txt{color:var(--suave);font-size:15px;margin:-6px 0 14px}

/* Bloque de Ana (soporte) */
.ana-bloque{display:grid;grid-template-columns:1fr minmax(0,360px);gap:24px;align-items:center;background:linear-gradient(135deg,#17301f,var(--sup));border:1px solid rgba(63,164,91,.45);border-radius:20px;padding:24px}
@media (max-width:760px){.ana-bloque{grid-template-columns:1fr}}
.ana-bloque h3{font-family:"Fraunces",Georgia,serif;font-size:28px;line-height:1.15;margin:8px 0}
.ana-bloque p{color:var(--suave);font-size:17px;margin-bottom:16px}
.ana-bloque .nota-g{font-size:14px;color:var(--suave);margin-top:10px}
.chat{background:#0e1a14;border:1px solid var(--borde);border-radius:18px;padding:14px;display:flex;flex-direction:column;gap:10px}
.chat .cab-chat{display:flex;align-items:center;gap:10px;padding-bottom:10px;border-bottom:1px solid var(--borde)}
.chat .cab-chat i{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--verde),var(--verde-osc));display:grid;place-items:center;font-style:normal;font-weight:800}
.chat .cab-chat b{font-size:15px;display:block;line-height:1.2}
.chat .cab-chat small{color:#7fd497;font-size:12px}
.burbuja{max-width:86%;padding:10px 13px;border-radius:14px;font-size:15px;line-height:1.4}
.burbuja.yo{align-self:flex-end;background:#2a3b32;border-bottom-right-radius:4px}
.burbuja.ana{align-self:flex-start;background:var(--verde-osc);border-bottom-left-radius:4px}
.burbuja small{display:block;opacity:.6;font-size:11px;margin-top:4px;text-align:right}