body {
    margin: 0;
    font-family: 'Poppins', Arial, sans-serif;
    background: white;
    color: #0a4fa3;
    text-align: center;
    animation: fadeIn 0.8s ease;
}

/* 🔥 TRANSICIÓN PÁGINA */
.fade {
    opacity: 0;
    transition: opacity 0.4s ease;
}

/* HEADER */
.header {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: white;
    padding: 10px;
    border-bottom: 3px solid #3fa9f5;
}

/* LOGO CENTRADO */
.logo img {
    height: 170px;
}

/* BOTÓN MENÚ */
.menu-btn {
    position: absolute;
    left: 15px;
    top: 15px;
    font-size: 30px;
    cursor: pointer;
    color: #0a4fa3;
}

/* BOTÓN MENSAJE GRANDE */
.btn-whatsapp {
    display: flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(45deg, #25D366, #1ebe5d);
    color: white;
    padding: 15px 25px;
    border-radius: 15px;
    text-decoration: none;
    font-weight: bold;
    font-size: 16px;
    margin-top: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.btn-whatsapp img {
    width: 30px;
}

/* TELÉFONO */
.telefono {
    font-size: 20px;
    font-weight: bold;
    margin-top: 10px;
}

/* MENÚ */
.side-menu {
    position: fixed;
    top: 0;
    left: -260px;
    width: 260px;
    height: 100%;
    background: #0a4fa3;
    padding-top: 100px;
    transition: 0.3s;
    z-index: 1000;
}

.side-menu a {
    color: white;
    padding: 18px;
    display: block;
    text-decoration: none;
    font-weight: bold;
}

/* CONTENIDO */
.contenido {
    padding: 20px;
    animation: slideUp 0.8s ease;
}

/* GRID */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

/* TARJETAS */
.card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0px 10px 25px rgba(0,0,0,0.1);
    transition: 0.4s;
}

.card:hover {
    transform: translateY(-12px) scale(1.03);
    box-shadow: 0px 20px 40px rgba(0,0,0,0.2);
}

.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card h3 {
    padding: 10px;
    font-weight: 900;
}

/* MARCAS */
.marcas img {
    max-width: 300px;
}

/* WHATSAPP */
.whatsapp {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #25D366;
    padding: 18px;
    border-radius: 50%;
}

/* ANIMACIONES */
@keyframes fadeIn {
    from {opacity: 0;}
    to {opacity: 1;}
}

@keyframes slideUp {
    from {transform: translateY(30px); opacity: 0;}
    to {transform: translateY(0); opacity: 1;}
}

/* SCROLL SUAVE */
html {
    scroll-behavior: smooth;
}