:root {
    --primary-color: #005f40;
    --secondary-color: #f8c537;
    --dark-color: #1a1a1a;
    --light-color: #f5f5f5;
    --accent-color: #d4a017;
}

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

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.main-header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

.logo img {
    height: 50px;
    width: auto;
}

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

.main-nav li {
    margin-left: 30px;
}

.main-nav a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 1rem;
}

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

.highlight a {
    background-color: var(--primary-color);
    color: white !important;
    padding: 10px 20px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.highlight a:hover {
    background-color: #004a32;
}

/* Flex layout for header */
header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .logo img {
        height: 40px;
    }
}