/* Reset básico + variables de color */
:root {
    --azul-900: #0b1f3a;
    --azul-700: #143a66;
    --azul-500: #1e5fa8;
    --azul-300: #4a8ed1;
    --gris-100: #f4f6f9;
    --gris-200: #e2e6ec;
    --gris-400: #9aa3b0;
    --gris-700: #4a5568;
    --gris-900: #1f2733;
    --blanco: #ffffff;

    --fuente: 'Poppins', sans-serif;
    --radio: 10px;
    --sombra: 0 6px 20px rgba(11, 31, 58, 0.08);
    --transicion: 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--fuente);
    color: var(--gris-900);
    background: var(--blanco);
    line-height: 1.6;
    font-size: 16px;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

h1,
h2,
h3,
h4 {
    font-weight: 600;
    color: var(--azul-900);
    line-height: 1.3;
}

/* Utilidades */
.contenedor {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.seccion {
    padding: 80px 0;
}

.seccion--gris {
    background: var(--gris-100);
}

.seccion__titulo {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 10px;
}

.seccion__subtitulo {
    text-align: center;
    color: var(--gris-700);
    margin-bottom: 50px;
}

/* Botones */
.btn {
    display: inline-block;
    padding: 12px 26px;
    border-radius: var(--radio);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transicion);
    border: 2px solid transparent;
    font-size: 0.95rem;
}

.btn--primario {
    background: var(--azul-500);
    color: var(--blanco);
}

.btn--primario:hover {
    background: var(--azul-700);
    transform: translateY(-2px);
}

.btn--secundario {
    background: var(--blanco);
    color: var(--azul-700);
    border-color: var(--blanco);
}

.btn--secundario:hover {
    background: transparent;
    color: var(--blanco);
    border-color: var(--blanco);
}

/* ============================================================
   SECCIÓN ACADEMIA EN EL SITIO PÚBLICO (v0.1)
   ============================================================ */
.seccion--academia {
    padding: 60px 0;
    background: var(--fondo, #f4f6f9);
}

.academia-promo {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 40px;
    align-items: center;
    background: linear-gradient(135deg, #143a66, #1e5fa8);
    color: #ffffff;
    border-radius: 18px;
    padding: 46px 48px;
    box-shadow: 0 20px 50px rgba(11, 31, 58, 0.15);
    position: relative;
    overflow: hidden;
}

.academia-promo::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.academia-promo__contenido {
    position: relative;
    z-index: 1;
}

.academia-promo__etiqueta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #ffffff;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.academia-promo__titulo {
    font-size: 1.9rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 14px;
    line-height: 1.2;
    letter-spacing: -0.3px;
}

.academia-promo__texto {
    font-size: 1rem;
    color: #cbd5e1;
    margin: 0 0 26px;
    max-width: 520px;
    line-height: 1.6;
}

.academia-promo .btn--primario {
    background: #ffffff;
    color: #1e5fa8;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.academia-promo .btn--primario:hover {
    background: #f8fafc;
    color: #143a66;
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.2);
}

/* Ícono decorativo a la derecha */
.academia-promo__icono {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.academia-promo__icono i {
    font-size: 8rem;
    color: rgba(255, 255, 255, 0.12);
}

/* Responsive */
@media (max-width: 900px) {
    .academia-promo {
        grid-template-columns: 1fr;
        padding: 36px 28px;
        text-align: center;
    }

    .academia-promo__texto {
        margin-left: auto;
        margin-right: auto;
    }

    .academia-promo__icono {
        display: none;
    }

    .academia-promo__titulo {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .academia-promo {
        padding: 28px 20px;
    }

    .academia-promo__titulo {
        font-size: 1.3rem;
    }

    .academia-promo__texto {
        font-size: 0.92rem;
    }
}