:root {
    --primary-color: #2d5a27;
    --secondary-color: #8db600;
    --light-bg: #f4f7f1;
    --text-dark: #333;
}

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

body {
    background-color: var(--light-bg);
    color: var(--text-dark);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.logo span { color: var(--secondary-color); }

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

.nav-links li a {
    text-decoration: none;
    color: var(--text-dark);
    padding: 0.5rem 1rem;
    transition: 0.3s;
}

.nav-links li a:hover {
    color: var(--secondary-color);
}

/* Hero Section */
.hero {
    height: 80vh;
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), 
                url('https://images.unsplash.com/photo-1500382017468-9049fed747ef?auto=format&fit=crop&w=1600&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding-top: 60px;
}

.hero-content h1 { font-size: 3rem; margin-bottom: 1rem; }

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    margin-top: 20px;
    transition: transform 0.3s;
}

.btn:hover { transform: scale(1.05); }

/* Seção Cards */
.container {
    padding: 5rem 5%;
    text-align: center;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: 0.3s;
}

.card:hover { transform: translateY(-10px); }

.card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Mobile */
@media (max-width: 768px) {
    .nav-links { display: none; } /* Menu hambúrguer simplificado aqui */
    .hero-content h1 { font-size: 2rem; }
}

footer {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2rem;
}