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

body {
    background: #f5f7fa;
    color: #333;
}

/* HERO */
.hero {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)),
    url('https://images.unsplash.com/photo-1498837167922-ddd27525d352');
    background-size: cover;
    color: white;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

nav {
    display: flex;
    justify-content: space-between;
    padding: 20px;
}

.logo {
    font-weight: bold;
}

.hero-content {
    margin: auto;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
}

.btn, .btn-primary {
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    margin-top: 10px;
    display: inline-block;
}

.btn {
    background: white;
    color: black;
}

.btn-primary {
    background: #2c7a7b;
    color: white;
}

/* SECCIONES */
.section {
    padding: 60px 20px;
    text-align: center;
}

/* CARDS */
.cards {
    display: flex;
    gap: 20px;
    margin-top: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    width: 300px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

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

.card h3 {
    margin: 15px 0;
}

/* CONTACTO */
.contacto {
    background: #2c7a7b;
    color: white;
}

/* FOOTER */
footer {
    padding: 20px;
    text-align: center;
    background: #222;
    color: white;
}