.main-header {
    background-color: var(--primary-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo a {
    color: white;
    font-size: 1.5rem;
    text-decoration: none;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu > li {
    position: relative;
    margin-left: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--accent-color);
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    min-width: 220px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border-radius: 4px;
    padding: 0.5rem 0;
    z-index: 1000;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content li {
    padding: 0.5rem 1rem;
}

.dropdown-content a {
    color: var(--text-color);
    text-decoration: none;
    display: block;
    padding: 0.5rem 1rem;
    transition: color 0.3s;
}

.dropdown-content a:hover {
    color: var(--primary-color);
    background-color: #f5f5f5;
}

.dropdown > a::after {
    content: '▼';
    font-size: 0.8em;
    margin-left: 0.5em;
}