body {
    font-family: Arial, sans-serif;
    background-color: #121212;
    color: #ddd;
    text-align: center;
}

.container {
    max-width: 800px;
    margin: auto;
    padding: 20px;
}

h1 {
    color: #0f0;
}

h2 {
    border-bottom: 2px solid #555;
    padding-bottom: 5px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    margin: 10px;
    background-color: #0f0;
    color: #000;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
}

.leaderboard, .recent-activity {
    background-color: #222;
    padding: 10px;
    margin: 10px 0;
    border-radius: 8px;
}

ul {
    list-style-type: none;
    padding: 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 10px;
    text-align: center;
    border: 1px solid #555;
}

th {
    background-color: #333;
    color: #0f0;
}

tr:nth-child(even) {
    background-color: #1a1a1a;
}

tr:nth-child(odd) {
    background-color: #222;
}

.status-unsolved {
    color: #ffcc00; /* Yellow */
    font-weight: bold;
}

.status-investigating {
    color: #ff6600; /* Orange */
    font-weight: bold;
}

.status-completed {
    color: #0f0; /* Green */
    font-weight: bold;
}