/* ITEC · sitio web (landing). Mismo estilo que el Aula Virtual y el Sistema Académico. */
@font-face {
    font-family: "Montserrat";
    font-style: normal;
    font-weight: 300 800;
    font-display: swap;
    src: url("../fonts/montserrat.woff2") format("woff2");
}

:root {
    --azul: #006ba4;
    --azul-osc: #00507c;
    --azul-claro: #e7f2f9;
    --marino: #0b2545;
    --indigo: #1d2b7a;
    --texto: #1c2733;
    --suave: #5a6b7d;
    --borde: #e3e9ef;
    --fondo: #f5f8fb;
    --blanco: #fff;
    --verde: #1f9d6a;
    --radio: 14px;
    --sombra: 0 1px 2px rgba(16, 42, 67, .06), 0 8px 24px rgba(16, 42, 67, .06);
    --sombra-alta: 0 2px 4px rgba(16, 42, 67, .06), 0 18px 40px rgba(16, 42, 67, .12);
    --ancho: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: "Montserrat", "Segoe UI", system-ui, -apple-system, sans-serif;
    color: var(--texto);
    background: var(--blanco);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--azul); text-decoration: none; }
a:hover { color: var(--azul-osc); }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .6em; color: var(--marino); letter-spacing: -.01em; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid rgba(0, 107, 164, .45); outline-offset: 2px; border-radius: 6px; }
.contenedor { width: 100%; max-width: var(--ancho); margin: 0 auto; padding: 0 24px; }
.solo-lector { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Botones ---------- */
.boton {
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    padding: .8rem 1.35rem; border-radius: 10px; border: 1.5px solid transparent;
    font: inherit; font-weight: 700; font-size: .95rem; line-height: 1.2; cursor: pointer;
    transition: background .15s, color .15s, border-color .15s, transform .15s, box-shadow .15s;
    white-space: nowrap;
}
.boton i { font-size: 1.15em; font-weight: normal; }
.boton:active { transform: translateY(1px); }
.boton-primario { background: var(--azul); color: #fff; box-shadow: 0 6px 16px rgba(0, 107, 164, .25); }
.boton-primario:hover { background: var(--azul-osc); color: #fff; }
.boton-claro { background: #fff; color: var(--azul); }
.boton-claro:hover { background: var(--azul-claro); color: var(--azul-osc); }
.boton-borde { background: transparent; color: var(--azul); border-color: #b9d6e8; }
.boton-borde:hover { background: var(--azul-claro); color: var(--azul-osc); border-color: var(--azul); }
.boton-fantasma { background: rgba(255, 255, 255, .12); color: #fff; border-color: rgba(255, 255, 255, .35); }
.boton-fantasma:hover { background: rgba(255, 255, 255, .2); color: #fff; }
.boton-chico { padding: .55rem .9rem; font-size: .85rem; border-radius: 8px; }
.boton[disabled] { opacity: .65; cursor: progress; }

/* ---------- Encabezado ---------- */
.encabezado {
    position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .92);
    backdrop-filter: saturate(180%) blur(10px); -webkit-backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid transparent; transition: border-color .2s, box-shadow .2s;
}
.encabezado.con-sombra { border-color: var(--borde); box-shadow: 0 4px 18px rgba(16, 42, 67, .06); }
.encabezado .contenedor { display: flex; align-items: center; gap: 1.5rem; height: 76px; }
.marca { flex: none; }
.marca img { height: 50px; width: auto; }
.menu { display: flex; align-items: center; gap: .25rem; margin: 0 0 0 auto; padding: 0; list-style: none; }
.menu a {
    display: block; padding: .5rem .75rem; border-radius: 8px; color: var(--texto);
    font-weight: 600; font-size: .92rem;
}
.menu a:hover { background: var(--fondo); color: var(--azul); }
.menu a[aria-current="page"] { color: var(--azul); background: var(--azul-claro); }
.acciones-enc { display: flex; gap: .5rem; align-items: center; }
.boton-menu {
    display: none; margin-left: auto; width: 44px; height: 44px; border-radius: 10px; border: 1px solid var(--borde);
    background: #fff; color: var(--marino); font-size: 1.4rem; cursor: pointer;
}

/* ---------- Portada (hero) ---------- */
.portada {
    position: relative; overflow: hidden; color: #fff;
    background: radial-gradient(1200px 600px at 85% -10%, rgba(64, 160, 220, .45), transparent 60%),
                linear-gradient(135deg, var(--azul) 0%, #0a4f8a 45%, var(--indigo) 100%);
}
.portada::before {
    content: ""; position: absolute; inset: 0; opacity: .18; pointer-events: none;
    background-image: radial-gradient(rgba(255, 255, 255, .7) 1px, transparent 1px);
    background-size: 22px 22px;
    mask-image: linear-gradient(90deg, #000 0%, transparent 70%);
    -webkit-mask-image: linear-gradient(90deg, #000 0%, transparent 70%);
}
.portada .contenedor {
    position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 3.5rem; align-items: center;
    padding-top: 4.5rem; padding-bottom: 5rem;
}
.etiqueta {
    display: inline-flex; align-items: center; gap: .6rem; margin-bottom: 1.2rem;
    font-size: .78rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: rgba(255, 255, 255, .85);
}
.etiqueta::before { content: ""; width: 28px; height: 2px; background: currentColor; }
.portada h1 { color: #fff; font-size: clamp(2.1rem, 4.4vw, 3.4rem); font-weight: 300; margin-bottom: .45em; }
.portada h1 strong { display: block; font-weight: 800; }
.portada .bajada { font-size: 1.12rem; color: rgba(255, 255, 255, .85); max-width: 34rem; margin-bottom: 2rem; }
.portada .botones { display: flex; flex-wrap: wrap; gap: .75rem; }
.cifras { display: flex; gap: 2.5rem; margin-top: 2.75rem; }
.cifras b { display: block; font-size: 1.9rem; font-weight: 800; line-height: 1.1; font-variant-numeric: tabular-nums; }
.cifras span { font-size: .85rem; color: rgba(255, 255, 255, .75); }
.foto-portada { position: relative; }
.foto-portada img {
    width: 100%; aspect-ratio: 4 / 3.2; object-fit: cover; border-radius: 22px;
    box-shadow: 0 30px 60px rgba(4, 20, 50, .35);
}
.tarjeta-flotante {
    position: absolute; left: -28px; bottom: 28px; display: flex; gap: .8rem; align-items: center;
    background: #fff; color: var(--texto); padding: .9rem 1.1rem; border-radius: 14px; box-shadow: var(--sombra-alta);
    max-width: 290px;
}
.tarjeta-flotante i {
    flex: none; display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px;
    background: var(--azul-claro); color: var(--azul); font-size: 1.3rem;
}
.tarjeta-flotante b { display: block; font-size: .92rem; }
.tarjeta-flotante span { font-size: .8rem; color: var(--suave); line-height: 1.35; display: block; }

/* Encabezado de páginas internas */
.cabecera-pagina { padding: 3.75rem 0 3.25rem; }
.cabecera-pagina .contenedor { display: block; padding-top: 0; padding-bottom: 0; }
.cabecera-pagina h1 { font-weight: 800; font-size: clamp(2rem, 3.6vw, 2.8rem); }
.cabecera-pagina .bajada { margin-bottom: 0; }
.migas { font-size: .85rem; color: rgba(255, 255, 255, .75); margin-bottom: .9rem; }
.migas a { color: #fff; font-weight: 600; }

/* ---------- Secciones ---------- */
.seccion { padding: 5.5rem 0; }
.seccion-gris { background: var(--fondo); }
.titulo-seccion { max-width: 44rem; margin: 0 auto 3rem; text-align: center; }
.titulo-seccion .antetitulo {
    display: inline-block; margin-bottom: .75rem; font-size: .75rem; font-weight: 700; letter-spacing: .16em;
    text-transform: uppercase; color: var(--azul);
}
.titulo-seccion h2 { font-size: clamp(1.7rem, 3vw, 2.35rem); font-weight: 800; }
.titulo-seccion p { color: var(--suave); font-size: 1.05rem; margin: 0; }
.titulo-izq { text-align: left; margin-left: 0; }

.rejilla { display: grid; gap: 1.25rem; }
.rejilla-3 { grid-template-columns: repeat(3, 1fr); }
.rejilla-4 { grid-template-columns: repeat(4, 1fr); }
.rejilla-2 { grid-template-columns: repeat(2, 1fr); }

.tarjeta {
    background: #fff; border: 1px solid var(--borde); border-radius: var(--radio); padding: 1.6rem;
    box-shadow: var(--sombra); transition: transform .2s, box-shadow .2s, border-color .2s;
}
.tarjeta:hover { transform: translateY(-3px); box-shadow: var(--sombra-alta); border-color: #cfe0ec; }
.tarjeta h3 { font-size: 1.08rem; margin-bottom: .45rem; }
.tarjeta p { color: var(--suave); font-size: .95rem; margin: 0; }
.icono {
    display: grid; place-items: center; width: 50px; height: 50px; border-radius: 14px; margin-bottom: 1.1rem;
    background: var(--azul-claro); color: var(--azul); font-size: 1.5rem;
}

/* Áreas de estudio (inicio) */
.area { display: flex; flex-direction: column; }
.area .chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .9rem; }
.chip {
    display: inline-block; line-height: 1.35; padding: .3rem .65rem; border-radius: 99px; background: var(--fondo); border: 1px solid var(--borde);
    font-size: .78rem; font-weight: 600; color: var(--texto);
}
a.chip:hover { border-color: var(--azul); color: var(--azul); background: #fff; }
.area .ver { margin-top: auto; padding-top: 1.1rem; font-weight: 700; font-size: .9rem; }

/* Catálogo (cursos) */
.filtros { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; margin-bottom: 2rem; }
.buscador { position: relative; flex: 1 1 100%; max-width: 440px; margin-bottom: .4rem; }
.buscador i { position: absolute; left: .9rem; top: 50%; transform: translateY(-50%); color: var(--suave); }
.buscador input[type=search] { padding-left: 2.6rem; background: #fff; }
.filtro {
    padding: .55rem .95rem; border-radius: 99px; border: 1px solid var(--borde); background: #fff; color: var(--texto);
    font: inherit; font-size: .85rem; font-weight: 600; cursor: pointer; transition: all .15s;
}
.filtro:hover { border-color: var(--azul); color: var(--azul); }
.filtro[aria-pressed="true"] { background: var(--azul); border-color: var(--azul); color: #fff; }
.programa { display: flex; flex-direction: column; padding: 1.4rem; }
.programa .area-tag { font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--azul); margin-bottom: .5rem; }
.programa h3 { font-size: 1.05rem; }
.programa p { display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.programa.abierto p { -webkit-line-clamp: unset; }
.programa .leer { background: none; border: 0; padding: .35rem 0 0; font: inherit; font-size: .85rem; font-weight: 700; color: var(--azul); cursor: pointer; align-self: flex-start; }
.programa .pie-programa { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: auto; padding-top: 1.2rem; }
.programa .pie-programa .solo-icono { padding-left: .7rem; padding-right: .7rem; margin-left: auto; }
.sin-resultados { text-align: center; color: var(--suave); padding: 2rem 0; }

/* Franja de modalidad */
.franja { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center; }
.franja img { border-radius: 20px; aspect-ratio: 5 / 4; object-fit: cover; box-shadow: var(--sombra-alta); }
.lista-check { list-style: none; padding: 0; margin: 1.5rem 0 2rem; display: grid; gap: .7rem; }
.lista-check li { display: flex; gap: .7rem; align-items: flex-start; }
.lista-check li::before {
    content: "\eb7b"; font-family: "remixicon"; flex: none; display: grid; place-items: center;
    width: 24px; height: 24px; border-radius: 50%; background: #e6f6ec; color: var(--verde); font-size: .9rem; margin-top: .1rem;
}
.dos-col { grid-template-columns: 1fr 1fr; column-gap: 1.5rem; }

/* Opiniones */
.opiniones { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(280px, calc((100% - 2.5rem) / 3)); gap: 1.25rem; overflow-x: auto; scroll-snap-type: x mandatory; padding: .5rem .25rem 1.25rem; }
.opinion { scroll-snap-align: start; display: flex; flex-direction: column; }
.opinion blockquote { margin: 0 0 1.4rem; color: var(--texto); font-size: .95rem; }
.opinion blockquote::before { content: "“"; display: block; font-size: 3rem; line-height: .8; color: var(--azul); font-weight: 800; }
.autor { display: flex; gap: .8rem; align-items: center; margin-top: auto; }
.autor img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; }
.autor b { display: block; font-size: .92rem; }
.autor span { font-size: .8rem; color: var(--suave); }

/* Llamado final */
.llamado {
    position: relative; overflow: hidden; border-radius: 24px; padding: 3.5rem; color: #fff;
    background: linear-gradient(135deg, var(--azul) 0%, var(--indigo) 100%);
    display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap;
}
.llamado::after {
    content: ""; position: absolute; right: -80px; top: -80px; width: 320px; height: 320px; border-radius: 50%;
    background: rgba(255, 255, 255, .08);
}
.llamado h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: .3em; }
.llamado p { color: rgba(255, 255, 255, .85); margin: 0; max-width: 36rem; }
.llamado .botones { position: relative; z-index: 1; display: flex; gap: .75rem; flex-wrap: wrap; }

/* Pasos (matrícula) */
.pasos { counter-reset: paso; display: grid; gap: 1rem; list-style: none; padding: 0; margin: 0; }
.pasos li { counter-increment: paso; display: flex; gap: 1rem; align-items: flex-start; }
.pasos li::before {
    content: counter(paso); flex: none; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%;
    background: var(--azul); color: #fff; font-weight: 800;
}
.pasos li div { padding-top: .35rem; }
.aviso {
    display: flex; gap: .8rem; padding: 1rem 1.2rem; border-radius: 12px; background: #fdf6e7; color: #7a5410; font-size: .92rem;
}
.aviso i { font-size: 1.25rem; }

/* Pagos */
.pestanas { display: inline-flex; padding: 4px; border-radius: 12px; background: var(--fondo); border: 1px solid var(--borde); margin-bottom: 2rem; }
.pestanas button {
    border: 0; background: transparent; padding: .6rem 1.3rem; border-radius: 9px; font: inherit; font-weight: 700;
    font-size: .9rem; color: var(--suave); cursor: pointer;
}
.pestanas button[aria-selected="true"] { background: #fff; color: var(--azul); box-shadow: 0 1px 3px rgba(16, 42, 67, .12); }
.pago { display: flex; flex-direction: column; gap: .3rem; }
.pago .tipo { font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--azul); }
.pago .precio { font-size: 2rem; font-weight: 800; color: var(--marino); font-variant-numeric: tabular-nums; }
.pago .boton { margin-top: .9rem; }

/* Empresa */
.servicio { display: grid; grid-template-columns: auto 1fr; gap: 1.25rem; align-items: start; }
.servicio .numero {
    display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: var(--azul); color: #fff;
    font-weight: 800; font-size: 1.1rem;
}
.servicio ul { margin: .6rem 0 0; padding-left: 1.1rem; color: var(--suave); font-size: .95rem; }
.servicio .boton { margin-top: 1.1rem; }
.aliado { display: flex; flex-direction: column; align-items: flex-start; gap: .6rem; }
.aliado .logo-aliado { height: 64px; width: 100%; display: flex; align-items: center; }
.aliado .logo-aliado img { max-height: 64px; max-width: 160px; object-fit: contain; }

/* Contacto */
.dato { display: flex; gap: 1rem; align-items: center; }
.dato .icono { margin: 0; flex: none; }
.dato b { display: block; color: var(--marino); }
.dato span, .dato a { font-size: .95rem; }

/* ---------- Pie ---------- */
.pie { background: var(--marino); color: rgba(255, 255, 255, .78); padding: 4.5rem 0 0; font-size: .92rem; }
.pie .rejilla { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 2.5rem; }
.pie img { height: 54px; width: auto; margin-bottom: 1.1rem; }
.pie h4 { color: #fff; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 1.1rem; }
.pie ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .55rem; }
.pie a { color: rgba(255, 255, 255, .78); }
.pie a:hover { color: #fff; }
.pie li i { margin-right: .5rem; color: #7cc0e8; }
.pie .redes { display: flex; gap: .5rem; margin-top: 1.25rem; }
.pie .redes a {
    display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; background: rgba(255, 255, 255, .08); font-size: 1.15rem;
}
.pie .redes a:hover { background: var(--azul); }
.pie-final { margin-top: 3.5rem; padding: 1.4rem 0; border-top: 1px solid rgba(255, 255, 255, .1); font-size: .82rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

.whatsapp {
    position: fixed; right: 22px; bottom: 22px; z-index: 40; display: grid; place-items: center; width: 56px; height: 56px;
    border-radius: 50%; background: #25d366; color: #fff; font-size: 1.75rem; box-shadow: 0 10px 24px rgba(0, 0, 0, .2);
    transition: transform .15s;
}
.whatsapp:hover { color: #fff; transform: scale(1.06); }

/* ---------- Formularios ---------- */
.campo { display: grid; gap: .35rem; }
.campo label, .campo .rotulo { font-size: .85rem; font-weight: 700; color: var(--marino); }
.campo .opcional { font-weight: 500; color: var(--suave); }
input[type=text], input[type=email], input[type=tel], input[type=search], select, textarea {
    width: 100%; padding: .78rem .95rem; border: 1.5px solid var(--borde); border-radius: 10px; background: var(--fondo);
    font: inherit; font-size: .95rem; color: var(--texto); transition: border-color .15s, background .15s, box-shadow .15s;
}
textarea { resize: vertical; min-height: 96px; }
select {
    appearance: none; -webkit-appearance: none; padding-right: 2.4rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%235a6b7d' stroke-width='1.8' d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right .95rem center;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--azul); background-color: #fff; box-shadow: 0 0 0 4px rgba(0, 107, 164, .12); }
.campo.con-error input, .campo.con-error select, .campo.con-error textarea { border-color: #d64545; background-color: #fff7f7; }
.campo .error { display: none; font-size: .8rem; color: #c03535; font-weight: 600; }
.campo.con-error .error { display: block; }
.opciones { display: flex; gap: .5rem; flex-wrap: wrap; }
.opciones label {
    position: relative; display: inline-flex; align-items: center; gap: .45rem; padding: .6rem .95rem; border-radius: 10px;
    border: 1.5px solid var(--borde); background: var(--fondo); font-size: .9rem; font-weight: 600; color: var(--texto); cursor: pointer;
}
.opciones input { position: absolute; opacity: 0; pointer-events: none; }
.opciones label:has(input:checked) { border-color: var(--azul); background: var(--azul-claro); color: var(--azul-osc); }
.opciones label:has(input:focus-visible) { box-shadow: 0 0 0 4px rgba(0, 107, 164, .2); }
.trampa { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }

/* ---------- Ventana: Solicitar información ---------- */
.ventana {
    position: fixed; inset: 0; z-index: 100; display: none; align-items: center; justify-content: center; padding: 1.25rem;
    background: rgba(8, 24, 46, .55); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.ventana.abierta { display: flex; animation: aparecer .18s ease-out; }
.ventana .caja {
    position: relative; width: 100%; max-width: 760px; max-height: calc(100vh - 2.5rem); overflow: hidden;
    display: grid; grid-template-columns: 250px 1fr; background: #fff; border-radius: 20px; box-shadow: 0 30px 80px rgba(4, 20, 50, .35);
    animation: subir .22s ease-out;
}
.ventana .lado {
    position: relative; padding: 2rem 1.6rem; color: #fff; overflow: hidden;
    background: linear-gradient(160deg, var(--azul) 0%, var(--indigo) 100%);
}
.ventana .lado::before {
    content: ""; position: absolute; inset: 0; opacity: .16;
    background-image: radial-gradient(rgba(255, 255, 255, .8) 1px, transparent 1px); background-size: 18px 18px;
}
.ventana .lado > * { position: relative; }
.ventana .lado h2 { color: #fff; font-size: 1.45rem; font-weight: 800; }
.ventana .lado p { color: rgba(255, 255, 255, .85); font-size: .9rem; }
.ventana .lado ul { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: .8rem; font-size: .85rem; }
.ventana .lado li { display: flex; gap: .6rem; align-items: flex-start; }
.ventana .lado li i { font-size: 1.05rem; color: #9fd3f2; }
.ventana .cuerpo { padding: 2rem 2rem 1.6rem; overflow-y: auto; max-height: calc(100vh - 2.5rem); }
.ventana .cuerpo h3 { font-size: 1.15rem; margin-bottom: .25rem; }
.ventana .cuerpo .sub { font-size: .88rem; color: var(--suave); margin-bottom: 1.4rem; }
.ventana form { display: grid; gap: 1rem; }
.ventana .fila { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.ventana .pie-form { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: .25rem; }
.ventana .pie-form small { color: var(--suave); font-size: .78rem; max-width: 18rem; }
.cerrar {
    position: absolute; top: 12px; right: 12px; z-index: 2; width: 38px; height: 38px; border-radius: 10px; border: 0;
    background: var(--fondo); color: var(--suave); font-size: 1.3rem; cursor: pointer;
}
.cerrar:hover { background: var(--borde); color: var(--marino); }
.mensaje-form { display: none; padding: .8rem 1rem; border-radius: 10px; font-size: .88rem; font-weight: 600; }
.mensaje-form.error { display: block; background: #fdeeee; color: #a12b2b; }
.listo { display: none; text-align: center; padding: 2.5rem 1rem; }
.listo .icono { width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 1.25rem; background: #e6f6ec; color: var(--verde); font-size: 2.2rem; }
.listo p { color: var(--suave); }
.ventana.enviada form, .ventana.enviada .encab-form { display: none; }
.ventana.enviada .listo { display: block; }
body.sin-scroll { overflow: hidden; }
@keyframes aparecer { from { opacity: 0; } to { opacity: 1; } }
@keyframes subir { from { opacity: 0; transform: translateY(16px) scale(.98); } to { opacity: 1; transform: none; } }

/* Aparición al desplazarse */
.js .revelar { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.js .revelar.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
    .js .revelar { opacity: 1; transform: none; }
}

/* ---------- Pantallas medianas y celulares ---------- */
@media (max-width: 1080px) {
    .acciones-enc .boton-borde { display: none; }
    .menu a { padding: .5rem .55rem; font-size: .88rem; }
}
@media (max-width: 960px) {
    .boton-menu { display: grid; place-items: center; }
    .menu, .acciones-enc { display: none; }
    .encabezado.menu-abierto .menu {
        display: flex; flex-direction: column; align-items: stretch; position: absolute; top: 76px; left: 0; right: 0;
        background: #fff; padding: .75rem 1rem 1rem; gap: .15rem; border-bottom: 1px solid var(--borde); box-shadow: 0 18px 30px rgba(16, 42, 67, .12);
    }
    .encabezado.menu-abierto .menu a { padding: .8rem 1rem; font-size: 1rem; }
    .encabezado.menu-abierto .menu .solo-movil { display: block; padding-top: .5rem; }
    .encabezado.menu-abierto .menu .solo-movil .boton { width: 100%; }
    .portada .contenedor { grid-template-columns: 1fr; gap: 2.5rem; padding-top: 3rem; padding-bottom: 3.5rem; }
    .tarjeta-flotante { left: 12px; bottom: 12px; }
    .rejilla-3, .rejilla-4 { grid-template-columns: repeat(2, 1fr); }
    .franja { grid-template-columns: 1fr; gap: 2rem; }
    .pie .rejilla { grid-template-columns: 1fr 1fr; }
    .ventana .caja { grid-template-columns: 1fr; }
    .ventana .lado { padding: 1.5rem 1.5rem 1.25rem; }
    .ventana .lado ul { display: none; }
    .ventana .lado p { margin: 0; }
}
@media (min-width: 961px) { .menu .solo-movil { display: none; } }
@media (max-width: 640px) {
    .contenedor { padding: 0 18px; }
    .seccion { padding: 4rem 0; }
    .rejilla-2, .rejilla-3, .rejilla-4, .dos-col { grid-template-columns: 1fr; }
    .rejilla-4:has(> .area) { grid-template-columns: 1fr 1fr; gap: .75rem; }
    .area { padding: 1.1rem; }
    .area .chips { display: none; }
    .area h3 { font-size: .98rem; }
    .area .icono { width: 42px; height: 42px; font-size: 1.25rem; margin-bottom: .8rem; }
    .area .ver { padding-top: .6rem; font-size: .85rem; }
    .filtros { flex-wrap: nowrap; overflow-x: auto; margin-left: -18px; margin-right: -18px; padding: 0 18px .4rem; flex-wrap: wrap; }
    .cifras { gap: 1.6rem; }
    .cifras b { font-size: 1.55rem; }
    .portada .botones .boton { flex: 1 1 100%; }
    .llamado { padding: 2.25rem 1.5rem; }
    .pie .rejilla { grid-template-columns: 1fr; }
    .ventana { padding: 0; align-items: flex-end; }
    .ventana .caja { max-height: 94vh; border-radius: 20px 20px 0 0; }
    .ventana .cuerpo { padding: 1.5rem 1.25rem 1.25rem; max-height: none; }
    .ventana .caja { overflow-y: auto; }
    .ventana .fila { grid-template-columns: 1fr; }
    .ventana .cerrar { position: fixed; top: calc(6vh + 10px); right: 12px; background: rgba(255, 255, 255, .9); }
    .ventana .pie-form .boton { width: 100%; }
    .whatsapp { right: 16px; bottom: 16px; width: 52px; height: 52px; }
}

/* ---------- Ventana: modo información / matrícula ---------- */
.modo { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; margin: 0 3rem .9rem 0; border-radius: 12px; background: var(--fondo); border: 1px solid var(--borde); }
.modo button {
    display: inline-flex; align-items: center; justify-content: center; gap: .4rem; border: 0; background: transparent;
    padding: .65rem .6rem; border-radius: 9px; font: inherit; font-weight: 700; font-size: .88rem; color: var(--suave); cursor: pointer;
}
.modo button[aria-selected="true"] { background: #fff; color: var(--azul); box-shadow: 0 1px 3px rgba(16, 42, 67, .14); }
.ventana .solo-matricula { display: none !important; }
.ventana.modo-matricula .solo-matricula { display: revert !important; }
.ventana.modo-matricula li.solo-matricula { display: flex !important; }
.ventana.modo-matricula .fila-pago { grid-template-columns: minmax(0, .75fr) minmax(0, 1.6fr); }
.ventana.modo-matricula .fila.solo-matricula { display: grid !important; }
.ventana.modo-matricula .campo.solo-matricula { display: grid !important; }
.ventana.modo-matricula .solo-info { display: none !important; }
.ventana .fila-nombre { grid-template-columns: 1fr; }
.ventana.modo-matricula .fila-nombre { grid-template-columns: 1fr 1fr; }
.campo .ayuda { font-size: .78rem; color: var(--suave); }
.campo .ayuda.ok { color: var(--verde); font-weight: 600; }
.campo .ayuda.mal { color: #c03535; font-weight: 600; }
.enlace { justify-self: start; background: none; border: 0; padding: 0; font: inherit; font-size: .86rem; font-weight: 700; color: var(--azul); cursor: pointer; }
.enlace:hover { color: var(--azul-osc); }
.codigo { display: flex; gap: .5rem; }
.codigo input { flex: 1; }
@media (max-width: 640px) {
    .modo { margin-right: 2.6rem; }
    .modo button { font-size: .8rem; padding: .6rem .4rem; }
    .modo button i { display: none; }
    .ventana.modo-matricula .fila-nombre, .ventana.modo-matricula .fila-pago { grid-template-columns: 1fr; }
}

/* Lista de grupos (matrícula) */
.lista-grupos { max-height: 260px; overflow-y: auto; -webkit-overflow-scrolling: touch; border: 1.5px solid var(--borde); border-radius: 10px; background: #fff; }
.grupo-item { display: flex; align-items: center; gap: .75rem; width: 100%; text-align: left; border: 0; border-bottom: 1px solid #eef2f6;
    background: #fff; padding: .7rem .9rem; font: inherit; cursor: pointer; transition: background .12s; }
.grupo-item:last-child { border-bottom: 0; }
.grupo-item:hover { background: var(--fondo); }
.grupo-item:focus-visible { outline: none; box-shadow: inset 0 0 0 2px var(--azul); }
.grupo-item .txt { flex: 1; min-width: 0; }
.grupo-item b { display: block; font-size: .9rem; line-height: 1.3; color: var(--marino); }
.grupo-item small { display: block; margin-top: .1rem; font-size: .78rem; color: var(--suave); }
.grupo-item .marca-g { flex: none; width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--borde); display: grid; place-items: center; color: #fff; font-size: .8rem; }
.grupo-item[aria-selected="true"] { background: var(--azul-claro); }
.grupo-item[aria-selected="true"] b { color: var(--azul-osc); }
.grupo-item[aria-selected="true"] .marca-g { background: var(--azul); border-color: var(--azul); }
.grupo-titulo { padding: .5rem .9rem; font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--azul); background: var(--fondo); position: sticky; top: 0; }
.grupos-vacio { padding: 1rem; font-size: .88rem; color: var(--suave); }
.campo.con-error .lista-grupos { border-color: #d64545; }