:root {
    --bg-color: #ffffff;
    --text-color: #111111;
    --accent-color: #000000;
    --secondary-color: #666666;
    --code-bg: #f4f4f4;
    --font-stack: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0a0a0a;
        --text-color: #e0e0e0;
        --accent-color: #ffffff;
        --secondary-color: #a0a0a0;
        --code-bg: #1a1a1a;
    }
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-stack);
    line-height: 1.6;
    padding: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--secondary-color);
    text-align: center;
}

.large-heading {
    font-family: "Pacifico", cursive;
    font-size: 3rem;
    margin-bottom: 1rem;
}

.medium-heading {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-left: 4px solid var(--accent-color);
    padding-left: 1rem;
    margin-top: 2rem;
}

.small-heading {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    padding-left: 1.25rem;
}

nav {
    margin-bottom: 3rem;
    text-align: center;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    padding: 0;
}

nav a {
    text-decoration: none;
    color: var(--secondary-color);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

nav a:hover {
    color: var(--text-color);
    text-decoration: underline;
}

.map-container {
    height: 500px;
    border: 1px solid var(--secondary-color);
    margin-bottom: 3rem;
}

#mapEurope {
    height: 700px; /* Increased height for the most traveled continent */
}

.leaflet-popup-content {
    font-family: var(--font-stack);
    color: #333; /* Leaflet popups usually look better with dark text on white */
}

.custom-circle-marker svg {
    overflow: visible;
}

footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--secondary-color);
    text-align: center;
    font-size: 0.8rem;
    color: var(--secondary-color);
}

.link-link {
    display: inline-block;
    text-decoration: none;
    color: var(--bg-color);
    background-color: var(--text-color);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    text-align: center;
    transition: opacity 0.2s;
    border: 1px solid var(--text-color);
    margin-bottom: 1rem;
}

.link-link:hover {
    opacity: 0.8;
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    .large-heading {
        font-size: 2rem;
    }
}