:root { 
            --primary: #3498db; 
            --bg-dark: #0a0f1a; 
            --bg-sec: #0d1321;
            --bg-card: #161c2d;
            --text-main: #ffffff;
            --text-muted: #94a3b8;
        }
        
        body { 
            font-family: "Open Sans", sans-serif; 
            background-color: var(--bg-dark); 
            color: var(--text-main); 
            overflow-x: hidden; 
            scroll-behavior: smooth; 
        }
        
        h1, h2, h3, h4, h5, h6 { font-family: "Raleway", sans-serif; }
        
        /* --- NAVEGACIÓN --- */
        .nav-menu a { 
            color: #fff; 
            font-size: 14px; 
            font-weight: 500; 
            font-family: "Poppins", sans-serif; 
            transition: 0.3s; 
            letter-spacing: 0.5px;
        }
        .nav-menu a:hover, .nav-menu .active { color: var(--primary); }
        
        /* --- HERO SECTION --- */
        .hero { 
            width: 100%; 
            min-height: 100vh; 
            background: linear-gradient(rgba(10, 15, 26, 0.9), rgba(10, 15, 26, 0.9)), 
                        url('https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&q=80&w=1500') center center; 
            background-size: cover; 
            display: flex; 
            align-items: center;
            padding-top: 80px;
        }

        /* Cuadros Estilo Aventro (Lado Derecho) */
        .feature-box {
            background: rgba(255, 255, 255, 0.03);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 35px 20px;
            border-radius: 12px;
            text-align: center;
            transition: all 0.4s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .feature-box:hover {
            background: rgba(255, 255, 255, 0.07);
            transform: translateY(-8px);
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(52, 152, 219, 0.15);
        }
        .feature-box i {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 15px;
        }
        .feature-box span {
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* --- TÍTULOS DE SECCIÓN --- */
        .section-title { text-align: center; padding-bottom: 60px; }
        .section-title h2 { font-size: 32px; font-weight: bold; text-transform: uppercase; position: relative; color: #fff; margin-bottom: 20px; }
        .section-title h2::after { content: ""; position: absolute; display: block; width: 50px; height: 3px; background: var(--primary); bottom: -10px; left: calc(50% - 25px); }
        .section-title p { color: var(--text-muted); font-style: italic; }

        /* --- SERVICIOS (FIX DE EXPANSIÓN) --- */
        .service-item { 
            padding: 40px 30px; 
            border-radius: 12px; 
            background: var(--bg-card); 
            border: 1px solid rgba(255,255,255,0.05);
            box-shadow: 0px 10px 30px rgba(0, 0, 0, 0.3); 
            transition: 0.3s; 
            cursor: pointer; 
            position: relative; 
            height: fit-content; /* Clave: No se estira con los vecinos */
        }
        .service-item:hover { border-color: var(--primary); transform: translateY(-5px); }
        .service-item i.main-icon { font-size: 40px; margin-bottom: 20px; color: var(--primary); display: block; }
        
        .expand-content { max-height: 0; overflow: hidden; transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1); opacity: 0; }
        .service-item.active .expand-content { max-height: 1000px; opacity: 1; margin-top: 25px; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 25px; }
        
        .arrow-toggle { position: absolute; right: 25px; top: 40px; color: var(--primary); transition: transform 0.3s; font-size: 18px; }
        .service-item.active .arrow-toggle { transform: rotate(180deg); }

        /* --- ESPECIALIDADES / FEATURES --- */
        .feature-list-item {
            background: var(--bg-card);
            padding: 20px;
            border-radius: 10px;
            border: 1px solid rgba(255,255,255,0.05);
            cursor: pointer;
            transition: 0.3s;
        }
        .feature-list-item:hover { border-color: var(--primary); }

        /* --- PLANES --- */
        .pricing .box { padding: 40px; background: var(--bg-card); border-radius: 10px; border: 1px solid rgba(255,255,255,0.05); position: relative; overflow: hidden; }
        .pricing .featured { border: 2px solid var(--primary); transform: scale(1.05); z-index: 10; }
        
        /* --- FAQ --- */
        details { background: var(--bg-card); border: 1px solid rgba(255,255,255,0.05); border-radius: 8px; margin-bottom: 15px; }
        summary { padding: 20px; font-weight: 600; cursor: pointer; outline: none; list-style: none; display: flex; justify-content: space-between; align-items: center; }
        summary::-webkit-details-marker { display: none; }

        /* --- FORMULARIOS --- */
        input, textarea { 
            background: rgba(255,255,255,0.03) !important; 
            border: 1px solid rgba(255,255,255,0.1) !important; 
            color: white !important; 
            transition: 0.3s;
        }
        input:focus, textarea:focus { border-color: var(--primary) !important; background: rgba(255,255,255,0.07) !important; outline: none; }
        
        
        /* Estilo base para los enlaces del menú */
        .nav-menu a {
            color: #ffffff;
            position: relative;
            transition: all 0.3s ease;
            font-size: 0.85rem;
            letter-spacing: 0.05em;
        }
        
        /* Color cuando está activo o hover */
        .nav-menu a.active, 
        .nav-menu a:hover {
            color: #3b82f6; /* Azul de ASEEMP */
        }
        
        /* Línea inferior animada (opcional, estilo Aventro) */
        .nav-menu a:not(.bg-blue-600)::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background-color: #3b82f6;
            transition: width 0.3s ease;
        }
        
        .nav-menu a.active:not(.bg-blue-600)::after {
            width: 100%;
        }
        
    /* TITULO: FILTRO LOGO Y ESTILO GRIS-BLANCO */
.logo-vibrante-celeste {
    /* Subimos el brillo para que destaque sobre el negro sin perder color */
    filter: brightness(1.6) saturate(1.4);
    image-rendering: -webkit-optimize-contrast;
    transition: all 0.3s ease;
}

.nav-link {
    /* Color gris-blanco suave */
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 1px;
}

.nav-link:hover {
    color: #ffffff;
}

.nav-link.active {
    color: #ffffff;
    border-bottom: 2px solid rgba(255, 255, 255, 0.5);
}