/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f0f8ff;
    color: #333;
    line-height: 1.6;
}

header {
    background: linear-gradient(to right, #00b4db, #0083b0);
    color: white;
    padding: 20px 0;
    text-align: center;
}

nav {
    background-color: #006994;
    text-align: center;
    padding: 10px 0;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
}

nav a:hover {
    text-decoration: underline;
}

.hero {
    background: url('cascadas-de-agua-azul-chiapas.jpg') center/cover no-repeat;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3em;
    text-shadow: 2px 2px 4px #000;
}

main {
    padding: 40px 20px;
    max-width: 1200px;
    margin: auto;
}

.contenido {
    margin-bottom: 50px;
}

.galeria-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.galeria-grid img {
    width: 100%;
    border-radius: 10px;
    object-fit: cover;
    height: 200px;
}

footer {
    background-color: #006994;
    color: white;
    text-align: center;
    padding: 15px 0;
}