:root {
    --fondo: #05080d;
    --fondo-secundario: #090f17;
    --panel: #101925;
    --panel-claro: #162233;
    --texto: #f7fafc;
    --muted: #9eb2c7;
    --borde: rgba(255, 255, 255, .10);
    --azul: #168cff;
    --verde: #28d991;
    --naranja: #ff8a1f;
    --sombra: 0 22px 60px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    min-height: 100vh;
    margin: 0;
    color: var(--texto);
    font-family: "Outfit", system-ui, sans-serif;
    background:
        radial-gradient(circle at 10% 2%, rgba(22, 140, 255, .15), transparent 28%),
        radial-gradient(circle at 92% 8%, rgba(40, 217, 145, .09), transparent 24%),
        var(--fondo);
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

.barra {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid var(--borde);
    background: rgba(5, 8, 13, .91);
    backdrop-filter: blur(18px);
}

.barra-interior, .pagina {
    width: min(1320px, calc(100% - 40px));
    margin: 0 auto;
}

.barra-interior {
    min-height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.marca { display: flex; align-items: center; gap: 11px; font-weight: 800; }
.marca-icono {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    color: #061018;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--azul), var(--verde));
}

.navegacion { display: flex; flex-wrap: wrap; gap: 8px; }
.enlace-nav, .boton-secundario, .boton-principal {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 14px;
    border: 1px solid var(--borde);
    border-radius: 11px;
    font-weight: 750;
}
.enlace-nav, .boton-secundario { color: var(--muted); background: rgba(255,255,255,.025); }
.enlace-nav:hover, .boton-secundario:hover { color: #fff; border-color: rgba(22,140,255,.42); }
.boton-principal {
    color: #061018;
    border: 0;
    cursor: pointer;
    background: linear-gradient(135deg, var(--verde), #90f0ca);
}
.boton-naranja { color: #140b03; background: linear-gradient(135deg, var(--naranja), #ffc079); }

.pagina { padding: 48px 0 82px; }
.volver { display: inline-flex; margin-bottom: 22px; color: #8fd0ff; font-weight: 750; }
.ceja {
    margin: 0 0 9px;
    color: var(--verde);
    font-size: .77rem;
    font-weight: 800;
    letter-spacing: .13em;
    text-transform: uppercase;
}
h1 { margin: 0; font-size: clamp(2.35rem, 6vw, 4.6rem); line-height: 1; }
h2 { margin: 0; font-size: clamp(1.55rem, 3vw, 2.1rem); }
h3 { margin: 0; }

.encabezado {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 28px;
    margin-bottom: 26px;
}
.encabezado p, .seccion-titulo p { margin: 10px 0 0; color: var(--muted); line-height: 1.55; }
.selector-canales { display: flex; gap: 8px; padding: 5px; border: 1px solid var(--borde); border-radius: 13px; background: var(--panel); }
.selector-canales a { padding: 9px 13px; color: var(--muted); border-radius: 9px; font-weight: 800; }
.selector-canales a.activo { color: #061018; background: linear-gradient(135deg, var(--azul), var(--verde)); }

.ayuda {
    margin-bottom: 28px;
    padding: 16px 18px;
    color: #c8ecff;
    border: 1px solid rgba(22, 140, 255, .32);
    border-radius: 14px;
    background: rgba(22, 140, 255, .075);
    line-height: 1.55;
}

.rejilla-academias { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 17px; }
.academia-card {
    --color-academia: var(--azul);
    position: relative;
    overflow: hidden;
    min-height: 310px;
    display: flex;
    flex-direction: column;
    padding: 23px;
    border: 1px solid var(--borde);
    border-radius: 20px;
    background: linear-gradient(145deg, rgba(20, 33, 49, .96), rgba(10, 16, 25, .96));
    box-shadow: var(--sombra);
}
.academia-card::before {
    content: "";
    position: absolute;
    width: 210px;
    height: 210px;
    right: -90px;
    top: -95px;
    border: 34px solid color-mix(in srgb, var(--color-academia) 23%, transparent);
    border-radius: 50%;
}
.academia-superior { position: relative; display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.academia-icono, .hero-icono {
    display: grid;
    place-items: center;
    color: var(--color-academia);
    border: 1px solid color-mix(in srgb, var(--color-academia) 46%, transparent);
    background: color-mix(in srgb, var(--color-academia) 12%, transparent);
    font-weight: 900;
}
.academia-icono { width: 50px; height: 50px; border-radius: 14px; }
.canal { padding: 6px 9px; color: #ccecff; border-radius: 999px; background: rgba(22,140,255,.12); font-size: .72rem; font-weight: 800; }
.academia-card h2 { position: relative; margin-top: 19px; font-size: 1.34rem; }
.academia-card .descripcion { position: relative; min-height: 67px; margin: 9px 0 0; color: var(--muted); line-height: 1.48; }
.metricas-card { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; margin-top: 17px; }
.metrica-card { padding: 9px; border-radius: 10px; background: rgba(255,255,255,.045); }
.metrica-card strong, .metrica-card span { display: block; }
.metrica-card span { margin-top: 2px; color: var(--muted); font-size: .68rem; }
.progreso { height: 8px; margin-top: 15px; overflow: hidden; border-radius: 999px; background: rgba(255,255,255,.09); }
.progreso span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--verde), var(--azul)); }
.progreso-texto { display: flex; justify-content: space-between; margin-top: 7px; color: #bed0df; font-size: .75rem; }
.academia-accion { position: relative; display: flex; justify-content: space-between; margin-top: auto; padding-top: 18px; color: var(--color-academia); font-weight: 800; }

.hero-academia {
    --color-academia: var(--azul);
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 25px;
    padding: 32px;
    border: 1px solid var(--borde);
    border-radius: 24px;
    background: linear-gradient(145deg, color-mix(in srgb, var(--color-academia) 13%, #101925), #090f17 72%);
    box-shadow: var(--sombra);
}
.hero-academia::after { content:""; position:absolute; width:310px; height:310px; right:-120px; top:-145px; border:45px solid color-mix(in srgb,var(--color-academia) 22%,transparent); border-radius:50%; }
.hero-icono { position: relative; z-index: 1; width: 76px; height: 76px; border-radius: 20px; font-size: 1.1rem; }
.hero-contenido { position: relative; z-index: 1; }
.hero-contenido h1 { font-size: clamp(2rem, 5vw, 3.6rem); }
.hero-contenido p { max-width: 760px; margin: 11px 0 0; color: var(--muted); line-height: 1.55; }
.hero-accion { position: relative; z-index: 1; min-width: 190px; }
.hero-accion .boton-principal, .hero-accion .boton-secundario { width: 100%; }
.hero-accion small { display:block; margin-top:9px; color:var(--muted); text-align:center; }

.resumen { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 23px 0 40px; }
.resumen article { padding: 17px; border: 1px solid var(--borde); border-radius: 15px; background: rgba(16,25,37,.88); }
.resumen span, .curso-meta { color: var(--muted); }
.resumen span { display:block; font-size:.8rem; }
.resumen strong { display:block; margin-top:5px; font-size:1.55rem; }

.seccion { margin-top: 40px; }
.seccion-titulo { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; margin-bottom: 17px; }
.lista-rutas { display: grid; gap: 16px; }
.ruta-card { overflow: hidden; border: 1px solid var(--borde); border-radius: 19px; background: rgba(16,25,37,.94); }
.ruta-cabecera { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 18px; padding: 22px; border-bottom: 1px solid var(--borde); }
.nivel { color: var(--verde); font-size: .72rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.ruta-cabecera h3 { margin-top: 7px; font-size: 1.3rem; }
.ruta-cabecera p { margin: 7px 0 0; color: var(--muted); line-height: 1.45; }
.ruta-datos { display: flex; align-items: center; gap: 8px; }
.ruta-datos span, .curso-meta span { padding: 6px 9px; border-radius: 8px; background: rgba(255,255,255,.05); font-size: .75rem; white-space: nowrap; }
.cursos-ruta { display: grid; gap: 8px; padding: 13px; }
.curso-fila { display: grid; grid-template-columns: 64px minmax(0, 1fr) auto auto; align-items: center; gap: 12px; padding: 11px 13px; border-radius: 11px; background: rgba(255,255,255,.045); }
.curso-numero { width:32px; height:32px; display:grid; place-items:center; color:#071018; border-radius:50%; background:linear-gradient(135deg,var(--verde),var(--azul)); font-size:.78rem; font-weight:900; }
.curso-miniatura { display:grid; place-items:center; width:64px; aspect-ratio:16/9; overflow:hidden; color:#071018; border-radius:8px; background:linear-gradient(135deg,var(--verde),var(--azul)); font-size:.78rem; font-weight:900; }
.curso-miniatura img { width:100%; height:100%; object-fit:cover; }
.curso-fila strong { display:block; }
.curso-fila small { display:block; margin-top:3px; color:var(--muted); }
.obligatorio { color:#ffd2a5; font-size:.74rem; }
.curso-ir { color:#8fd0ff; font-weight:800; }
.ruta-pie { display:flex; justify-content:space-between; align-items:center; gap:12px; padding:13px 18px; color:var(--verde); border-top:1px solid var(--borde); font-weight:800; }

.rejilla-cursos { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:15px; }
.curso-card { overflow:hidden; padding:0; border:1px solid var(--borde); border-radius:17px; background:var(--panel); }
.curso-card-portada { display:grid; place-items:center; width:100%; aspect-ratio:16/9; overflow:hidden; color:#e7f8ff; background:linear-gradient(135deg,rgba(14,165,233,.45),rgba(139,92,246,.45)); font-size:2.25rem; font-weight:900; }
.curso-card-portada img { width:100%; height:100%; object-fit:cover; transition:transform .25s ease; }
.curso-card:hover .curso-card-portada img { transform:scale(1.035); }
.curso-card-contenido { padding:20px; }
.curso-card h3 { margin:8px 0; font-size:1.12rem; }
.curso-card p { min-height:62px; margin:0; color:var(--muted); line-height:1.45; }
.curso-meta { display:flex; flex-wrap:wrap; gap:7px; margin-top:14px; }
.curso-card .progreso-texto { padding-top:7px; }
.curso-card .academia-accion { border-top:1px solid var(--borde); }

.vacio, .error { padding: 38px 24px; text-align:center; color:var(--muted); border:1px solid var(--borde); border-radius:18px; background:var(--panel); }
.error { color:#fecaca; }
.mensajes-contenedor { display:grid; gap:10px; margin-bottom:20px; }
.mensaje { padding:14px 16px; border:1px solid var(--borde); border-radius:12px; }
.mensaje-exito { color:#a7f3d0; background:rgba(16,185,129,.12); }
.mensaje-error { color:#fecaca; background:rgba(239,68,68,.12); }
.mensaje-advertencia { color:#fde68a; background:rgba(245,158,11,.12); }
.mensaje-informacion { color:#bae6fd; background:rgba(14,165,233,.12); }

@media (max-width: 1020px) {
    .rejilla-academias, .rejilla-cursos { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hero-academia { grid-template-columns:auto minmax(0,1fr); }
    .hero-accion { grid-column:1 / -1; }
    .resumen { grid-template-columns:repeat(2,1fr); }
}

@media (max-width: 680px) {
    .barra-interior, .pagina { width:min(100% - 26px,1320px); }
    .barra-interior { align-items:flex-start; padding:13px 0; flex-direction:column; }
    .navegacion { width:100%; }
    .enlace-nav { flex:1; }
    .pagina { padding-top:30px; }
    .encabezado, .seccion-titulo { align-items:flex-start; flex-direction:column; }
    .selector-canales { width:100%; }
    .selector-canales a { flex:1; text-align:center; }
    .rejilla-academias, .rejilla-cursos { grid-template-columns:1fr; }
    .hero-academia { grid-template-columns:1fr; padding:24px; }
    .hero-icono { width:60px; height:60px; }
    .resumen { grid-template-columns:repeat(2,1fr); }
    .ruta-cabecera { grid-template-columns:1fr; }
    .ruta-datos { flex-wrap:wrap; }
    .curso-fila { grid-template-columns:54px minmax(0,1fr) auto; }
    .curso-miniatura { width:54px; }
    .obligatorio { display:none; }
}