/* Apex Academy · sistema visual (Manual de Marca v2.1)
   Navy de fondo, azul eléctrico para estructura, dorado solo en la acción. */
:root {
  --navy: #0B1F3A;
  --navy-2: #12294a;
  --navy-3: #163160;
  --azul: #2563EB;
  --azul-claro: #7ea6ff;
  --dorado: #F59E0B;
  --gris: #F3F4F6;
  --texto-2: #b8c3d6;
  --blanco: #FFFFFF;
  --tinta: #1f2937;
  --tinta-2: #4b5563;
  --acento-prof: #B45309;
  --radio: 14px;
  --ancho: 1120px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--navy); scroll-behavior: smooth; }
body {
  background: var(--navy);
  color: var(--gris);
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.contenedor { max-width: var(--ancho); margin: 0 auto; padding: 0 24px; }
h1, h2, h3, .marca { font-family: Montserrat, sans-serif; line-height: 1.15; }
h1 { font-weight: 700; font-size: clamp(34px, 5vw, 54px); color: var(--blanco); }
h2 { font-weight: 700; font-size: clamp(28px, 3.6vw, 40px); color: var(--blanco); margin-bottom: 14px; }
h3 { font-weight: 600; font-size: 19px; color: var(--blanco); }
.lead { font-size: 19px; color: var(--texto-2); max-width: 640px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: Montserrat, sans-serif; font-weight: 600; font-size: 13px;
  letter-spacing: .2em; text-transform: uppercase; color: var(--azul-claro);
  margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 4px; height: 26px; background: var(--azul); border-radius: 2px; }

/* Botones: el dorado es solo para la acción principal */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: Montserrat, sans-serif; font-weight: 700; font-size: 16px;
  padding: 15px 26px; border-radius: 999px; text-decoration: none;
  transition: transform .15s ease, filter .15s ease, background .15s ease;
}
.btn svg { width: 20px; height: 20px; flex: none; }
.btn-accion { background: var(--dorado); color: var(--navy); }
.btn-accion:hover { filter: brightness(1.06); transform: translateY(-1px); }
.btn-sec { border: 1.5px solid rgba(126,166,255,.6); color: var(--blanco); }
.btn-sec:hover { background: rgba(37,99,235,.15); border-color: var(--azul-claro); }

/* Cabecera */
.cabecera { position: sticky; top: 0; z-index: 20; background: rgba(11,31,58,.92); backdrop-filter: blur(8px); border-bottom: 1px solid rgba(243,244,246,.08); }
.cabecera .contenedor { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.cabecera .logo img { height: 34px; width: auto; }
.nav { display: flex; align-items: center; gap: 26px; }
.nav a { text-decoration: none; font-size: 15px; color: var(--texto-2); }
.nav a:hover { color: var(--blanco); }
.nav .btn { padding: 10px 18px; font-size: 14px; color: var(--navy); }
@media (max-width: 820px) { .nav a:not(.btn) { display: none; } }

/* Secciones */
section { padding: 88px 0; }
.seccion-clara { background: var(--gris); color: var(--tinta); }
.seccion-clara h2, .seccion-clara h3 { color: var(--navy); }
.seccion-clara .lead { color: var(--tinta-2); }
.seccion-clara .eyebrow { color: var(--acento-prof); }
.seccion-alt { background: var(--navy-2); }
.cabeza-seccion { margin-bottom: 44px; }

/* Héroe */
.heroe { padding: 72px 0 88px; }
.heroe .contenedor { min-width: 0; display: grid; grid-template-columns: 1.25fr .9fr; gap: 56px; align-items: center; }
.heroe .acciones { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.heroe .foto { position: relative; border-radius: 22px; overflow: hidden; border: 1px solid rgba(126,166,255,.25); background: #000; }
.heroe .foto figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 18px 20px; background: linear-gradient(transparent, rgba(11,31,58,.95)); font-size: 14px; color: var(--texto-2); }
.heroe .foto figcaption strong { display: block; font-family: Montserrat, sans-serif; color: var(--blanco); font-size: 16px; }
@media (max-width: 860px) { .heroe .contenedor { grid-template-columns: 1fr; } .heroe .foto { max-width: 420px; } }

/* Tarjetas */
.rejilla { display: grid; gap: 18px; }
.rejilla-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .rejilla-3 { grid-template-columns: 1fr; } }
.tarjeta { background: var(--navy-2); border: 1px solid rgba(37,99,235,.28); border-radius: var(--radio); padding: 26px; }
.seccion-clara .tarjeta { background: var(--blanco); border-color: #e5e7eb; }
.tarjeta p { color: var(--texto-2); margin-top: 8px; font-size: 16px; }
.seccion-clara .tarjeta p { color: var(--tinta-2); }
.num { font-family: Montserrat, sans-serif; font-weight: 700; color: var(--azul-claro); font-size: 14px; letter-spacing: .1em; }
.seccion-clara .num { color: var(--azul); }

/* Programas */
.pilar { margin-bottom: 40px; }
.pilar h3 { font-size: 15px; letter-spacing: .18em; text-transform: uppercase; color: var(--azul-claro); margin-bottom: 16px; }
.programas { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.programa { display: flex; flex-direction: column; background: var(--navy-2); border: 1px solid rgba(37,99,235,.28); border-radius: var(--radio); padding: 22px; text-decoration: none; transition: border-color .15s ease, background .15s ease; }
.programa:hover { border-color: var(--azul); background: var(--navy-3); }
.programa .codigo { font-family: Montserrat, sans-serif; font-weight: 700; font-size: 13px; color: var(--azul-claro); }
.programa h4 { font-family: Montserrat, sans-serif; font-weight: 600; font-size: 18px; color: var(--blanco); margin: 6px 0 8px; line-height: 1.3; }
.programa p { font-size: 15px; color: var(--texto-2); flex: 1; }
.programa .meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.etiqueta { font-size: 12.5px; padding: 4px 10px; border-radius: 999px; background: rgba(37,99,235,.16); color: var(--azul-claro); }
.programa .mas { margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--blanco); }
.destacado { border-color: rgba(126,166,255,.6); background: linear-gradient(160deg, var(--navy-3), var(--navy-2)); }

/* Cifras */
.cifras { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px 28px; margin: 34px 0; }
.cifra strong { display: block; font-family: Montserrat, sans-serif; font-weight: 700; font-size: 32px; color: var(--navy); white-space: nowrap; }
.cifra span { font-size: 14px; color: var(--tinta-2); }
@media (max-width: 380px) { .cifra strong { font-size: 26px; } }
.sobre { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: start; }
.sobre img { border-radius: 18px; }
.sobre-plantilla { grid-template-columns: 1.1fr .9fr; }
.sobre-mitad { grid-template-columns: 1fr 1fr; }
@media (max-width: 860px) { .sobre, .sobre-plantilla, .sobre-mitad { grid-template-columns: 1fr; gap: 32px; } .sobre > img { max-width: 360px; } .sobre-plantilla > img { max-width: 100%; } }
.lista { list-style: none; display: grid; gap: 10px; margin-top: 18px; }
.lista li { padding-left: 22px; position: relative; }
.lista li::before { content: ""; position: absolute; left: 0; top: .6em; width: 8px; height: 8px; border-radius: 2px; background: var(--azul); }

/* Banda de acción */
.banda { border-radius: 22px; padding: 44px; background: var(--navy-2); border: 1px solid rgba(126,166,255,.3); display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.banda p { color: var(--texto-2); max-width: 620px; margin-top: 8px; }

/* Pasos */
.pasos { counter-reset: paso; display: grid; gap: 16px; }
.paso { display: grid; grid-template-columns: 46px 1fr; gap: 16px; align-items: start; }
.paso .n { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--navy); color: var(--blanco); font-family: Montserrat, sans-serif; font-weight: 700; }

/* Pie */
.pie { padding: 48px 0 40px; border-top: 1px solid rgba(243,244,246,.1); font-size: 15px; color: var(--texto-2); }
.pie .contenedor { display: flex; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.pie img { height: 30px; width: auto; margin-bottom: 12px; }
.pie a { text-decoration: none; }
.pie a:hover { color: var(--blanco); }
.redes { display: flex; gap: 10px; margin-top: 10px; }
.redes a { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 10px; border: 1px solid rgba(243,244,246,.15); }
.redes svg { width: 18px; height: 18px; }

/* Botón flotante de WhatsApp */
.flotante { position: fixed; right: 18px; bottom: 18px; z-index: 30; width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; background: var(--dorado); color: var(--navy); box-shadow: 0 8px 24px rgba(0,0,0,.35); }
.flotante svg { width: 28px; height: 28px; }