:root {
    --gris-acero: #2C3E50;
    --naranja-fundicion: #E67E22;
    --azul-industrial: #3498DB;
    --rojo-forja: #C0392B;
    --verde-maquinaria: #27AE60;
    --gris-claro: #ECF0F1;
    --blanco: #FFFFFF;
    --negro: #2C3E50;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--negro);
    background: var(--blanco);
}

.contenedor {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.header-bangente {
    background: linear-gradient(135deg, var(--gris-acero), var(--azul-industrial));
    color: var(--blanco);
    padding: 1.5rem 0;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo-bangente {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--blanco);
}

.logo-icon {
    font-size: 2rem;
    color: var(--naranja-fundicion);
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 800;
    margin: 0;
}

.nav-menu {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--blanco);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover,
.nav-link.active {
    background: var(--naranja-fundicion);
    transform: translateY(-2px);
}

.seccion-padding {
    padding: 5rem 0;
}

.titulo-seccion {
    font-size: 2.8rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--gris-acero);
    font-weight: 800;
}

.subtitulo-seccion {
    text-align: center;
    font-size: 1.2rem;
    color: #7F8C8D;
    margin-bottom: 4rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.imagen-destacada {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
    object-fit: cover;
}

.boton-primario {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--naranja-fundicion);
    color: var(--blanco);
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.boton-primario:hover {
    background: var(--rojo-forja);
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.2);
}

.boton-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--verde-maquinaria);
    color: var(--blanco);
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.boton-whatsapp:hover {
    background: #229954;
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.2);
}

.tarjeta-servicio {
    background: var(--blanco);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 6px 12px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.tarjeta-servicio:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.icono-servicio {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--naranja-fundicion), var(--rojo-forja));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.icono-servicio i {
    font-size: 2.5rem;
    color: var(--blanco);
}

.titulo-tarjeta {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    color: var(--gris-acero);
    font-weight: 700;
}

.texto-tarjeta {
    color: #7F8C8D;
    line-height: 1.8;
}

.footer-bangente {
    background: linear-gradient(135deg, var(--gris-acero), #1A252F);
    color: var(--blanco);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-seccion h4 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    color: var(--naranja-fundicion);
    font-weight: 700;
}

.footer-seccion a {
    display: block;
    color: var(--gris-claro);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.3s ease;
}

.footer-seccion a:hover {
    color: var(--naranja-fundicion);
}

.footer-seccion p {
    color: var(--gris-claro);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.redes-sociales {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.icono-social {
    width: 45px;
    height: 45px;
    background: var(--naranja-fundicion);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.icono-social:hover {
    background: var(--rojo-forja);
    transform: translateY(-3px);
}

.icono-social i {
    color: var(--blanco);
    font-size: 1.2rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    text-align: center;
    color: var(--gris-claro);
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .nav-menu {
        justify-content: center;
        width: 100%;
    }
    
    .titulo-seccion {
        font-size: 2rem;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}