:root {
    --azul-logo: #0097D7;
    --azul-profundo: #1B2631;
    --gris-tecnico: #F4F7F6;
}

body { font-family: 'Inter', sans-serif; background-color: var(--gris-tecnico); }
h1, h2, h3, .nav-link { font-family: 'Oswald', sans-serif; text-transform: uppercase; }

/* Navbar personalizada */
.navbar { background-color: var(--azul-profundo); border-bottom: 3px solid var(--azul-logo); }
.nav-link { color: white !important; letter-spacing: 1px; }
.nav-link:hover { color: var(--azul-logo) !important; }

/* Estilo del Carrusel (Hero) */
.carousel-item { height: 70vh; min-height: 400px; background: no-repeat center center scroll; background-size: cover; }
.carousel-caption { 
    background: rgba(27, 38, 49, 0.8); /* Fondo semi-transparente para legibilidad */
    padding: 2rem;
    border-left: 5px solid var(--azul-logo);
    bottom: 20%;
}
.btn-primary { background-color: var(--azul-logo); border: none; padding: 10px 30px; }
.btn-primary:hover { background-color: #007bb1; }

/* Botón Flotante WhatsApp */
.btn-whatsapp {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: #fff;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 0px 4px 10px rgba(0,0,0,0.3);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-whatsapp:hover {
    background-color: #128c7e;
    color: #fff;
    transform: scale(1.1);
}

/* Animación de pulso */
.btn-whatsapp::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: #25d366;
    border-radius: 50%;
    z-index: -1;
    animation: pulse-whatsapp 2s infinite;
}

@keyframes pulse-whatsapp {
    0% { transform: scale(1); opacity: 0.7; }
    100% { transform: scale(1.6); opacity: 0; }
}