:root {
    --primary-color: #0a4226; /* Dark Green */
    --secondary-color: #c0c0c0; /* Silver/Diamond Gray */
    --bg-color: #f8f9fa; /* Off White */
    --text-color: #333333;
    --white: #ffffff;
}

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

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

/* Navbar */
.navbar {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--secondary-color);
    letter-spacing: 1px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.btn-admin {
    background-color: var(--secondary-color);
    color: var(--primary-color) !important;
    padding: 0.5rem 1.2rem;
    border-radius: 4px;
    font-weight: bold !important;
    transition: background-color 0.3s ease;
}

.btn-admin:hover {
    background-color: #e0e0e0;
}

/* Hero Section */
.hero {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 6rem 2rem;
    border-bottom: 6px solid var(--secondary-color);
    background-image: linear-gradient(rgba(10, 66, 38, 0.9), rgba(10, 66, 38, 0.9)), url('https://picsum.photos/seed/farm/1920/1080');
    background-size: cover;
    background-position: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #e1efe6;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--secondary-color);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    border-radius: 6px;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: #e0e0e0;
    transform: translateY(-3px);
}

/* Products Section */
.products {
    padding: 5rem 5%;
    text-align: center;
}

.products h2 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.products h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--secondary-color);
    border-radius: 2px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    border-top: 5px solid var(--primary-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-top-color: var(--secondary-color);
}

.card h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card p {
    color: #666;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    border-top: 1px solid rgba(192, 192, 192, 0.2);
}