/* Portada pública de StudIA (studiapp.net/inicio). Basada en la de las PCG (pcg.css): mismos colores y fuentes. */
@font-face { font-family: 'Outfit'; font-weight: 600; font-display: swap; src: url('/pcg/fuentes/outfit-latin-600-normal.woff2') format('woff2'); }
@font-face { font-family: 'Source Sans 3'; font-weight: 400; font-display: swap; src: url('/pcg/fuentes/source-sans-3-latin-400-normal.woff2') format('woff2'); }
@font-face { font-family: 'Source Sans 3'; font-weight: 600; font-display: swap; src: url('/pcg/fuentes/source-sans-3-latin-600-normal.woff2') format('woff2'); }

:root {
  --bg: #F3F8FA; --surface: #FFFFFF; --soft: #DCEFF3; --border: #C6DEE4;
  --ink: #1B2F5E; --ink-2: #4A5E82; --primary: #0A7285; --on-primary: #FFFFFF;
  --ok: #1A7442; --ok-bg: #DDF3E6; --warn-bg: #FDF0E0; --warn-ink: #7A4720; --err: #C62026; --err-bg: #FBE1E2;
  --sombra: 0 4px 20px -6px rgba(27, 47, 94, .16);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B1530; --surface: #12224A; --soft: #1C3168; --border: #2B4380;
    --ink: #EAF1FA; --ink-2: #A8B8D6; --primary: #4CC9DC; --on-primary: #06222B;
    --ok: #4CC58A; --ok-bg: #0F3B2B; --warn-bg: #3A2A16; --warn-ink: #E0A15E; --err: #F07377; --err-bg: #421A22;
    --sombra: 0 4px 20px -6px rgba(0, 0, 0, .5);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.5 'Source Sans 3', system-ui, sans-serif; }
h1, h2, h3 { font-family: 'Outfit', system-ui, sans-serif; font-weight: 600; line-height: 1.15; margin: 0 0 .4em; }
h1 { font-size: clamp(30px, 6vw, 46px); }
h2 { font-size: clamp(24px, 4.5vw, 32px); }
h3 { font-size: 22px; }
a { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
.ancho { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.centro { text-align: center; }
.sub { color: var(--ink-2); margin: 0 0 16px; }
.nota { color: var(--ink-2); font-size: 14px; }

.barra { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.barra-in { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.marca { display: flex; align-items: center; gap: 8px; font: 600 22px 'Outfit', sans-serif; color: var(--ink); text-decoration: none; }
.enlace { font-weight: 600; text-decoration: none; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 10px 22px; border-radius: 12px;
  background: var(--primary); color: var(--on-primary); font: 600 17px 'Source Sans 3', sans-serif; text-decoration: none; border: 2px solid var(--primary); cursor: pointer; }
.btn:hover { filter: brightness(1.08); }
.btn-borde { background: transparent; color: var(--primary); }
.ancho-total { width: 100%; }
.acciones { display: flex; flex-wrap: wrap; gap: 12px; margin: 20px 0 12px; }

.hero { padding: 40px 0 28px; }
.hero-in { display: grid; gap: 16px; align-items: center; }
.cinta { display: inline-block; background: var(--soft); color: var(--primary); font-weight: 600; border-radius: 999px; padding: 4px 14px; margin: 0 0 14px; font-size: 15px; }
.mau { display: none; }
@media (min-width: 820px) { .hero-in { grid-template-columns: 1fr 240px; } .mau { display: block; width: 220px; justify-self: center; } .hero { padding: 64px 0 44px; } }

.bloque { padding: 40px 0; }
.suave { background: var(--surface); border-block: 1px solid var(--border); }
.tarjeta { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--sombra); padding: 20px; max-width: 720px; }

.pregunta { font-weight: 600; font-size: 19px; margin: 0 0 14px; }
.areas { display: grid; gap: 12px; }
@media (min-width: 640px) { .areas { grid-template-columns: 1fr 1fr; } }
.area { text-align: left; background: var(--bg); border: 2px solid var(--border); border-radius: 12px; padding: 16px; cursor: pointer; color: var(--ink); font: inherit; }
.area:hover, .area:focus-visible { border-color: var(--primary); }
.area strong { display: block; font: 600 19px 'Outfit', sans-serif; }
.area span { color: var(--ink-2); font-size: 15px; }

.progreso { display: flex; justify-content: space-between; font-size: 15px; font-weight: 600; color: var(--ink-2); }
.barra-prog { height: 6px; background: var(--soft); border-radius: 999px; margin: 8px 0 18px; overflow: hidden; }
#barra { height: 100%; width: 0; background: var(--primary); transition: width .3s; }
.opciones { display: grid; gap: 10px; }
.opcion { display: flex; gap: 12px; align-items: center; text-align: left; width: 100%; min-height: 52px; padding: 10px 14px; border-radius: 12px;
  border: 2px solid var(--border); background: var(--surface); color: var(--ink); font: inherit; cursor: pointer; }
.opcion:hover:not(:disabled) { border-color: var(--primary); }
.opcion .letra { flex: none; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--soft); font-weight: 600; font-size: 14px; }
.opcion.bien { border-color: var(--ok); background: var(--ok-bg); }
.opcion.mal { border-color: var(--err); background: var(--err-bg); }
.opcion:disabled { cursor: default; }
.explica { margin: 14px 0; padding: 14px; border-radius: 12px; background: var(--warn-bg); font-size: 15px; }
.explica strong { color: var(--warn-ink); }
.explica.bien { background: var(--ok-bg); }
.explica.bien strong { color: var(--ok); }
.resultado { font: 600 64px 'Outfit', sans-serif; margin: 0; }
.resultado small { font-size: 28px; color: var(--ink-2); }

.cursos { display: grid; gap: 20px; }
@media (min-width: 760px) { .cursos { grid-template-columns: 1fr 1fr; } }
.curso { background: var(--bg); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; display: flex; flex-direction: column; }
.curso img { aspect-ratio: 1; object-fit: cover; width: 100%; }
.curso-in { padding: 18px; display: flex; flex-direction: column; flex: 1; }
.curso ul { padding-left: 20px; margin: 0 0 14px; }
.curso li { margin-bottom: 4px; }
.precio { font: 600 30px 'Outfit', sans-serif; margin: auto 0 12px; }
.precio small { font: 400 15px 'Source Sans 3', sans-serif; color: var(--ink-2); }

.pasos { padding-left: 22px; max-width: 720px; }
.pasos li { margin-bottom: 10px; }
details { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 12px 16px; margin-bottom: 10px; max-width: 760px; }
summary { font-weight: 600; cursor: pointer; }
details p { margin: 8px 0 0; color: var(--ink-2); }

.pie { padding: 28px 0 40px; color: var(--ink-2); font-size: 14px; text-align: center; }
.pie p { margin: 4px 0; }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }
#juego, section[id] { scroll-margin-top: 72px; }
@media (max-width: 759px) { .curso img { aspect-ratio: 16 / 9; object-position: bottom; } }

/* Portada */
.acento { color: var(--primary); }
.sub.grande { font-size: 19px; }
.etiqueta { text-transform: uppercase; letter-spacing: .08em; font-weight: 600; font-size: 14px; color: var(--primary); margin: 0 0 6px; }
.menu { display: none; gap: 22px; }
.menu a { color: var(--ink); text-decoration: none; font-weight: 600; }
.menu a:hover { color: var(--primary); }
@media (min-width: 820px) { .menu { display: flex; } }
.pasos3 { display: grid; gap: 16px; margin-top: 20px; }
@media (min-width: 760px) { .pasos3 { grid-template-columns: repeat(3, 1fr); } }
.paso { background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 20px; }
.paso p, .item p { color: var(--ink-2); margin: 0; }
.num { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--primary); color: var(--on-primary); font: 600 18px 'Outfit', sans-serif; margin-bottom: 10px; }
@media (min-width: 1000px) { .cursos.cuatro { grid-template-columns: repeat(4, 1fr); } .cursos.cuatro .curso h3 { font-size: 20px; } }
.chip { align-self: flex-start; display: inline-block; background: var(--soft); color: var(--primary); font-weight: 600; font-size: 13px; border-radius: 999px; padding: 3px 10px; margin-bottom: 8px; }
.chip-ok { background: var(--ok-bg); color: var(--ok); }
.rejilla { display: grid; gap: 14px; margin-top: 18px; }
@media (min-width: 640px) { .rejilla { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .rejilla { grid-template-columns: repeat(3, 1fr); } }
.item { background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 18px; }
.item h3 { font-size: 19px; }
.dos { display: grid; gap: 20px; align-items: center; }
.ilustra { width: 120px; justify-self: center; }
@media (min-width: 820px) { .dos { grid-template-columns: 1fr 220px; } .dos > .ilustra:first-child { order: 0; } .dos:has(> .ilustra:first-child) { grid-template-columns: 220px 1fr; } .ilustra { width: 220px; } }
.lista { padding-left: 20px; margin: 0 0 8px; }
.lista li { margin-bottom: 6px; }
.ancho-texto { max-width: 760px; }
.planes { display: grid; gap: 16px; margin-top: 18px; }
@media (min-width: 820px) { .planes { grid-template-columns: repeat(3, 1fr); } }
.plan { background: var(--bg); border: 2px solid var(--border); border-radius: 16px; padding: 20px; display: flex; flex-direction: column; }
.plan .lista { flex: 1; margin-bottom: 16px; }
.plan .precio { margin: 4px 0 12px; }
.destacado { border-color: var(--primary); }
.centrar { justify-content: center; }
.hero { background: linear-gradient(180deg, var(--soft) 0%, var(--bg) 100%); }