/* ================================================
   PROMOCIONES — Biomédica de Referencia
   ================================================ */

/* ── Grid de promociones ── */
.promos-seccion {
    padding: 56px 0;
    background: #fff;
}

.promos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

/* ── Tarjeta de promo ── */
.promo-card {
    display: block;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    text-decoration: none;
    background: #f0f0f0;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: transform 0.25s, box-shadow 0.25s;
}

.promo-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.14);
}

.promo-card__img {
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

.promo-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.35s;
}

.promo-card:hover .promo-card__img img {
    transform: scale(1.04);
}

.promo-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(139,26,43,0.85) 0%, transparent 55%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.25s;
}

.promo-card:hover .promo-card__overlay {
    opacity: 1;
}

.promo-card__btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.03em;
}

/* ── Estado vacío ── */
.promos-vacio {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-gris-texto, #777);
}

.promos-vacio svg {
    color: #ddd;
    margin-bottom: 20px;
}

.promos-vacio p {
    font-size: 1rem;
    line-height: 1.7;
}

.promos-vacio a {
    color: var(--color-primary, #8B1A2B);
    font-weight: 600;
    text-decoration: none;
}

/* ── Banner separador ── */
.seccion-banner {
    height: 260px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* ── Convenios ── */
.convenios-seccion {
    padding: 56px 0;
    background: #f8f8f8;
}

.seccion__encabezado {
    margin-bottom: 40px;
}

.seccion__encabezado h2 {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--color-primary, #8B1A2B);
    margin: 0 0 12px;
}

.seccion__linea {
    width: 60px;
    height: 3px;
    background: var(--color-primary, #8B1A2B);
    border-radius: 2px;
    margin-bottom: 16px;
}

.seccion__encabezado p {
    font-size: 1rem;
    color: #555;
    line-height: 1.7;
    max-width: 680px;
}

.convenios-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.convenio-grupo h3 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #333;
    margin: 0 0 16px;
}

.convenio-grupo ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.convenio-grupo ul li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    color: #444;
    padding: 10px 14px;
    background: #fff;
    border-radius: 6px;
    border-left: 3px solid var(--color-primary, #8B1A2B);
}

.convenio-aviso {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: #fff3f4;
    border: 1px solid #f0c0c5;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 24px;
    color: #7a1520;
}

.convenio-aviso svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--color-primary, #8B1A2B);
}

.convenio-aviso p {
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

.convenio-telefono p {
    font-size: 0.9rem;
    color: #666;
    margin: 0 0 12px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .promos-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .promo-card__overlay {
        opacity: 1;
    }

    .convenios-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .convenio-grupo ul {
        grid-template-columns: 1fr;
    }

    .seccion-banner {
        height: 160px;
    }
}