*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Poppins', sans-serif;
}

body{
    background:#0b1120;
    color:white;
}

nav{
    background:#111827;
    padding:15px 40px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

nav a{
    color:white;
    text-decoration:none;
    margin-left:25px;
    font-weight:500;
    transition:0.3s;
}

nav a:hover{
    color:#facc15;
}

.hero{
    padding:120px 20px;
    text-align:center;
    animation: fadeIn 1.2s ease-in-out;
}

.hero h1{
    font-size:48px;
    margin-bottom:20px;
}

.btn{
    display:inline-block;
    margin-top:25px;
    padding:14px 30px;
    background:#facc15;
    color:black;
    text-decoration:none;
    border-radius:8px;
    font-weight:600;
    transition:0.3s;
}

.btn:hover{
    background:#eab308;
    transform:scale(1.05);
}

.section{
    padding:80px 20px;
    text-align:center;
}

.cards{
    display:flex;
    justify-content:center;
    gap:30px;
    flex-wrap:wrap;
}

.card{
    background:#111827;
    padding:30px;
    width:300px;
    border-radius:15px;
    transition:0.4s;
    border:1px solid #1f2937;
}

.card:hover{
    transform:translateY(-10px);
    background:#1e293b;
}

footer{
    background:#020617;
    padding:30px;
    text-align:center;
    margin-top:60px;
}

/* Animación */
@keyframes fadeIn{
    from{opacity:0; transform:translateY(20px);}
    to{opacity:1; transform:translateY(0);}
}

/* WhatsApp flotante */
.whatsapp{
    position:fixed;
    bottom:20px;
    right:20px;
    background:#25D366;
    color:white;
    padding:15px;
    border-radius:50%;
    font-size:24px;
    text-align:center;
    box-shadow:0 4px 10px rgba(0,0,0,0.4);
    z-index:1000;
    text-decoration:none;
    transition:0.3s;
}

.whatsapp:hover{
    transform:scale(1.1);
}