/* ===============================
   HERO SUPERIOR
================================= */
:root {
    /* Imagen y colores personalizables */
    --bg: url('../img/banner/contact-01.png');
    /*--clr1: #6366f1;*/ /* principal del degradado lado derecho */
    /*--clr2: #0ea5e9;*/ /* secundario */
    /*--overlay1: #BE00FF;
    --overlay2: #6c2bd9;
    --overlay3: #00c2ff;*/
    --overlay1: #000;
    --overlay2: #000;
    --overlay3: #000;
    --clr0: #ffd500;
    --clr1: #000; /* principal del degradado lado derecho */
    --clr2: #000; /* secundario */
}

/* ===== HERO ===== */
.hero-contact {
    position: relative;
    min-height: clamp(280px, 48vh, 520px);
    display: grid;
    align-content: center;
    background-image: var(--bg);
    background-size: cover;
    background-position: center;
    overflow: visible; /* ¡importante! que deje asomar el form */
    isolation: isolate;
    margin-bottom: 0; /* evita espacios fantasma */
    z-index: 0; /* por debajo del form */
}

    .hero-contact::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(115deg,var(--overlay1) 0%,var(--overlay2) 45%,var(--overlay3) 100%);
        mix-blend-mode: multiply;
        opacity: .78;
        z-index: 0;
    }

    .hero-contact::after {
        content: "";
        position: absolute;
        inset: 0;
        background: radial-gradient(120% 80% at 20% 30%, rgba(0,0,0,.05) 0%, rgba(0,0,0,.35) 100%);
        z-index: 0;
    }

    .hero-contact .container {
        position: relative;
        z-index: 1;
    }

/* ===== SECCIÓN INFERIOR + SOLAPE ===== */
.contact-shell {
    --overlap: 120px; /* cuánto se mete el form en el hero */
    background: #f4f7fb;
    position: relative;
    z-index: 1;
    padding-top: 56px; /* espacio de respiro arriba */
}

    /* variantes rápidas */
    .contact-shell.overlap-sm {
        --overlap: 80px;
    }

    .contact-shell.overlap-md {
        --overlap: 120px;
    }

    .contact-shell.overlap-lg {
        --overlap: 170px;
    }

@media (max-width: 992px) {
    .contact-shell {
        --overlap: 80px;
        padding-top: 36px;
    }
}

/* Tarjeta que se sobrepone */
.contact-card {
    position: relative;
    z-index: 3; /* por encima del hero */
    transform: translateY(calc(-1 * var(--overlap))); /* ¡solape real! */
    /*border: 1px solid #eef2f7;*/
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(17,24,39,.18), 0 6px 18px rgba(17,24,39,.12);
    background: #fff;
}

/* Lado derecho */
.contact-side {
    background: linear-gradient(135deg,var(--clr1),var(--clr2));
    color: #fff;
}

/* Formularios (Bootstrap tune) */
/*.form-control, .form-select {
    border-radius: 10px;
    border: 1px solid #d1d5db;
    box-shadow: none !important;
}

    .form-control:focus, .form-select:focus {
        border-color: var(--clr0);
        box-shadow: 0 0 0 .2rem rgba(99,102,241,.25);
    }*/

/* Botón */
.btn-primary {
    background: var(--clr1);
    border: none;
    border-radius: 10px;
    font-weight: 600;
    transition: background .25s ease, transform .05s ease;
}

    .btn-primary:hover {
        background: var(--clr2);
    }

    .btn-primary:active {
        transform: translateY(1px);
    }

/* Utilidad extra por si hubiera un corte del hero que tape el solape */
.hero-contact, .contact-shell {
    will-change: transform;
}