:root {
    --primary-green: #1b4d3e;
    --secondary-green: #2c7a62;
    --navy-blue: #1a252f;
    --earth-brown: #8b5a2b;
    --light-bg: #f4f7f6;
    --white: #ffffff;
    --text-dark: #333333;
    --text-light: #666666;
}

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

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

h1, h2, h3 {
    font-family: 'Playfair Display', serif;
    color: var(--navy-blue);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.main-header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-green);
    letter-spacing: 1px;
}

.logo .highlight {
    color: var(--earth-brown);
}

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

.main-header nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

.main-header nav a:hover {
    color: var(--primary-green);
}

.btn-nav {
    border: 2px solid var(--primary-green);
    padding: 8px 20px;
    border-radius: 4px;
    color: var(--primary-green) !important;
}

.btn-nav:hover {
    background-color: var(--primary-green);
    color: var(--white) !important;
}

/* Hero */
.hero {
    height: 600px;
    background: url('https://images.unsplash.com/photo-1500382017468-9049fed747ef?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80') no-repeat center center/cover;
    position: relative;
    display: flex;
    align-items: center;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
    color: var(--white);
    max-width: 800px;
}

.hero h1 {
    font-size: 3rem;
    color: var(--white);
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    font-weight: 300;
}

.btn-primary {
    display: inline-block;
    background-color: var(--primary-green);
    color: var(--white);
    padding: 15px 40px;
    text-decoration: none;
    font-weight: 700;
    border-radius: 4px;
    transition: background 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary:hover {
    background-color: var(--secondary-green);
}

/* About */
.about {
    padding: 80px 0;
    background-color: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.about .subtitle {
    font-size: 1.1rem;
    color: var(--primary-green);
    font-weight: 700;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background-color: #ddd;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #888;
    border-radius: 8px;
    font-size: 1.2rem;
}

.image-placeholder i {
    font-size: 4rem;
    margin-bottom: 20px;
}

/* Products */
.products {
    padding: 80px 0;
    text-align: center;
}

.section-desc {
    margin-bottom: 50px;
    color: var(--text-light);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

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

.product-img {
    width: 100px;
    height: 100px;
    background-color: #f0f0f0;
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: #aaa;
}

.product-card h3 {
    margin-bottom: 10px;
    font-size: 1.3rem;
}

/* Certifications */
.certifications {
    background-color: var(--navy-blue);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

.certifications h2 {
    color: var(--white);
    margin-bottom: 40px;
}

.cert-grid {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.cert-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.cert-item i {
    font-size: 3rem;
    color: var(--primary-green); /* Destaque no escuro */
    background: var(--white);
    padding: 10px;
    border-radius: 50%;
}

.cert-item span {
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* Footer */
.footer {
    background-color: #111;
    color: #ccc;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer h3 {
    color: var(--white);
    margin-bottom: 20px;
}

.contact-details p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.map-placeholder {
    width: 100%;
    height: 200px;
    background-color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid #333;
    padding-top: 20px;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        height: auto;
        padding: 20px 0;
    }
    
    .main-header nav ul {
        flex-direction: column;
        gap: 15px;
        margin-top: 20px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .about-grid, .footer-grid {
        grid-template-columns: 1fr;
    }
}