:root {
    --primary: #2c3e50;
    --accent: #e67e22;
    --light: #ecf0f1;
}

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

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

.container { width: 90%; max-width: 1100px; margin: auto; padding: 40px 0; }

.navbar { background: var(--primary); color: white; padding: 1rem 0; position: sticky; top: 0; z-index: 1000; }
.navbar .container { display: flex; justify-content: space-between; align-items: center; padding: 0; }
.navbar ul { display: flex; list-style: none; }
.navbar a { color: white; text-decoration: none; margin-left: 20px; font-weight: bold; }

.hero { 
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), 
                url('img/principal.jpg');
    background-size: cover; height: 70vh; display: flex; align-items: center; justify-content: center; text-align: center; color: white;
}

.btn { background: var(--accent); color: white; padding: 10px 25px; text-decoration: none; border-radius: 5px; border: none; cursor: pointer; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin-top: 30px; margin-bottom: 30px;}
.card { background: var(--light); padding: 20px; border-radius: 8px; text-align: center; }
.card img { width: 100%; height: 200px; object-fit: cover; border-radius: 5px; }

.contact-section { background: var(--primary); color: white; text-align: center; padding: 60px 0; }
#contactForm { max-width: 600px; margin: 20px auto; display: flex; flex-direction: column; gap: 15px; }
input, textarea { padding: 12px; border-radius: 5px; border: none; }