/* Base Styles and Resets */
body {
    font-family: Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

h1, h2, h3 {
    text-align: center;
    color: #333;
    margin-top: 0;
}

h2 {
    color: #8b6f47;
    border-bottom: 2px solid #8b6f47;
    padding-bottom: 10px;
}

h3 {
    color: #8b6f47;
    margin-top: 20px;
    margin-bottom: 10px;
    font-size: 16px;
}

/* Navigation Styles */
.main-nav {
    background-color: #333;
    padding: 10px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    color: #4CAF50;
    font-size: 18px;
    font-weight: bold;
    text-decoration: none;
}

.nav-brand a:hover {
    color: #45a049;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.nav-link:hover {
    background-color: #4CAF50;
}

.nav-link.active {
    background-color: #4CAF50;
    font-weight: bold;
}

/* Main Content Area */
.main-content {
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

/* Section Styles */
.section {
    margin: 40px 0;
}

/* Utility Classes */
.invisible {
    visibility: hidden;
}

/* Responsive Design - Mobile First */
@media (max-width: 768px) {
    .main-content {
        padding: 15px;
    }
}

@media (max-width: 600px) {
    .main-content {
        padding: 15px;
        overflow-x: hidden;
        overflow-y: auto;
        max-height: 100vh;
    }
}

@media (max-width: 360px) {
    .main-content {
        padding: 10px;
    }
}