/* -------------------------------------------------------
   BANNER FIJO – MANTENIMIENTO INDUSTRIAL (PREMIUM)
------------------------------------------------------- */

.mantenimiento-banner-fixed {
    position: relative;
    width: 100%;
    height: 450px;
    overflow: hidden;
    border-radius: 8px;
    margin-bottom: 40px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
    background: #000; /* evita bordes blancos en DonWeb */
}

/* Fondo difuminado generado desde la misma imagen */
.mantenimiento-banner-fixed::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("../assets/img/mantenimiento_industrial/mantenimiento_industrial_01.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: blur(18px) brightness(0.55);
    transform: scale(1.2); /* evita bordes del blur */
    z-index: 0;
}

/* Imagen principal completa, sin recortes */
.banner-img {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: contain;     /* imagen completa */
    object-position: center; /* centrada */
    display: block;
    background-color: #000;  /* relleno elegante si sobra espacio */
}

/* Overlay oscuro para contraste */
.banner-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.45);
    z-index: 2;
}

/* Título */
.banner-title {
    position: absolute;
    bottom: 20px;
    left: 40px;
    z-index: 3;
    color: #fff;
    font-size: 2.6rem;
    font-weight: 700;
    text-shadow: 0 3px 8px rgba(0,0,0,0.6);
}

/* Responsive */
@media (max-width: 768px) {
    .mantenimiento-banner-fixed {
        height: 300px;
    }
    .banner-title {
        font-size: 1.9rem;
        left: 20px;
        bottom: 15px;
    }
}

/* -------------------------------------------------------
   TITULOS AZULES (estética corporativa)
------------------------------------------------------- */

.section-title,
.subsection-title,
.servicios-title {
    color: #0056b3;
}

/* -------------------------------------------------------
   TARJETAS Y GRILLAS
------------------------------------------------------- */

.servicios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.servicio-item {
    background: #ffffff;
    padding: 18px 20px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    font-size: 1.05rem;
    line-height: 1.45;
    border-left: 4px solid #007bff;
    transition: all 0.2s ease-in-out;
}

.servicio-item:hover {
    background: #f5f7fa;
    box-shadow: 0 4px 14px rgba(0,0,0,0.12);
    transform: translateY(-2px);
}

/* -------------------------------------------------------
   CONTACTO
------------------------------------------------------- */

.contact-section {
    display: flex;
    gap: 40px;
    margin-top: 30px;
}

.contact-info {
    flex: 1;
    font-size: 1.1rem;
    line-height: 1.6;
}

.contact-section form {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-section input,
.contact-section textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #d0d0d0;
    border-radius: 6px;
    font-size: 1rem;
}

.contact-section textarea {
    height: 120px;
    resize: vertical;
}

.btn {
    background: #0056b3;
    color: #fff;
    padding: 12px 18px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: background 0.2s ease-in-out;
}

.btn:hover {
    background: #003f87;
}

/* -------------------------------------------------------
   RESPONSIVE GENERAL
------------------------------------------------------- */

@media (max-width: 768px) {
    .contact-section {
        flex-direction: column;
    }
    .servicio-item {
        font-size: 1rem;
    }
}