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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* Navegación fija */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: background 0.3s, box-shadow 0.3s;
}

.logo {
    font-weight: 600;
    font-size: 1.5rem;
    color: #fff;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li a {
    text-decoration: none;
    color: #fff;
    margin-left: 20px;
    font-weight: 600;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), 
                url('https://images.unsplash.com/photo-1497215728101-856f4ea42174?auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}

.hero-content h1 { font-size: 3.5rem; margin-bottom: 10px; }

.btn-main {
    display: inline-block;
    padding: 12px 30px;
    background: #007bff;
    color: #fff;
    text-decoration: none;
    border: none;
    border-radius: 5px;
    font-weight: 600;
    margin-top: 20px;
}

/* Secciones generales */
.section {
    padding: 100px 5%;
    text-align: center;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.card {
    padding: 30px;
    background: #f4f4f4;
    border-radius: 10px;
}

/* Formulario */
.contact-form {
    max-width: 500px;
    margin: 40px auto 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input, .contact-form textarea {
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-family: inherit;
}

footer {
    padding: 40px;
    background: #111;
    color: #fff;
    text-align: center;
}