/* Basic Reset */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }

body { background-color: #f4f4f4; color: #333; line-height: 1.6; }

/* Navigation */
nav { background: #2d5a27; color: white; display: flex; justify-content: space-between; padding: 1rem 5%; align-items: center; }
nav ul { display: flex; list-style: none; }
nav ul li { margin-left: 20px; }
nav ul li a { color: white; text-decoration: none; font-weight: bold; }

/* Hero Section */
.hero { background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('https://images.unsplash.com/photo-1593693411515-c202e974fe09'); 
        height: 60vh; background-size: cover; background-position: center; display: flex; flex-direction: column; 
        justify-content: center; align-items: center; color: white; text-align: center; }

/* Layout Grid */
.container { padding: 40px 5%; }
.grid-section { background: white; padding: 20px; margin-bottom: 20px; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }

/* WhatsApp Floating Button */
.whatsapp-float {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #25d366;
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    text-decoration: none;
    display: flex;
    align-items: center;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.2);
    z-index: 1000;
    transition: transform 0.3s;
}

.whatsapp-float i { font-size: 24px; margin-right: 10px; }
.whatsapp-float:hover { transform: scale(1.1); background-color: #128c7e; }

/* Mobile Responsive */
@media (max-width: 768px) {
    nav { flex-direction: column; }
    nav ul { margin-top: 10px; }
}