:root {
    --primary: #2e7d32;
    --secondary: #8bc34a;
    --dark: #1b3022;
    --light: #f9fbf9;
    --white: #ffffff;
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Open Sans', sans-serif;
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background: var(--white);
    padding: 1.2rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Montserrat', sans-serif;
    color: var(--primary);
    font-size: 1.5rem;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    transition: 0.3s;
}

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

.btn-cta {
    background: var(--primary);
    color: var(--white) !important;
    padding: 8px 20px;
    border-radius: 50px;
}

/* Hero */
.hero {
    height: 100vh;
    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') no-repeat center center/cover;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
}

.hero h2 { font-family: 'Montserrat', sans-serif; font-size: 3rem; margin-bottom: 20px; }
.hero p { font-size: 1.2rem; max-width: 700px; margin: 0 auto 30px; }

.btn-primary {
    background: var(--secondary);
    color: var(--white);
    padding: 15px 35px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: 0.3s;
}

.btn-primary:hover { background: var(--primary); transform: translateY(-3px); }

/* Seções */
.content-section { padding: 80px 0; }
.alt-bg { background-color: #f0f4f0; }

.section-title { text-align: center; margin-bottom: 50px; }
.underline { width: 60px; height: 4px; background: var(--secondary); margin: 10px auto; }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.card {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: 0.3s;
}

.card:hover { transform: translateY(-10px); }
.card .icon { font-size: 3rem; margin-bottom: 20px; }

/* Menu Mobile */
.mobile-menu { display: none; cursor: pointer; border: none; background: none; }
.mobile-menu span { display: block; width: 25px; height: 3px; background: var(--primary); margin: 5px; }

@media (max-width: 768px) {
    .mobile-menu { display: block; }
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--white);
        padding: 20px;
        box-shadow: var(--shadow);
    }
    .nav-links.active { display: flex; }
    .hero h2 { font-size: 2rem; }
}

footer { background: var(--dark); color: var(--white); padding: 30px 0; text-align: center; }