body {
    background-color: #1a1a1a;
    color: #e0e0e0;
    font-family: 'Roboto Mono', monospace;
    margin: 0;
    padding: 2rem;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    border-bottom: 2px solid #00ffdd;
    padding-bottom: 1rem;
}

.header-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

header img {
    height: 40px;
    margin-right: 1rem;
}

header h1 {
    color: #00ffdd;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin: 0;
    font-size: 1.5rem;
}

.nav-button {
    background-color: #00ffdd;
    color: #1a1a1a;
    padding: 0.5rem 1rem;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.nav-button:hover {
    background-color: #fff;
}

.leaderboard-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.leaderboard {
    background-color: #2a2a2a;
    border: 1px solid #444;
    border-radius: 8px;
    padding: 1.5rem;
}

.leaderboard h2 {
    color: #00ffdd;
    text-align: center;
    margin-top: 0;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.leaderboard-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.leaderboard-list li {
    display: flex;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid #3a3a3a;
}

.leaderboard-list li:last-child {
    border-bottom: none;
}

.rank {
    font-size: 1rem;
    font-weight: bold;
    color: #00ffdd;
    width: 40px;
}

.name {
    flex-grow: 1;
    font-size: 1.1rem;
}

.score {
    font-weight: bold;
    color: #fff;
}