.leaderboard-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.stats-card {
    background: white;
    border-radius: 10px;
    padding: 15px;
    margin: 10px 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #667eea;
}

.difficulty-section {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.difficulty-title {
    color: #667eea;
    font-weight: bold;
    font-size: 1.2em;
    margin-bottom: 15px;
    border-bottom: 2px solid #667eea;
    padding-bottom: 5px;
}

.table-custom {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

    .table-custom thead {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
    }

.medal-icon {
    font-size: 1.5em;
    margin-right: 10px;
}

.position-1 {
    background-color: #fff9c4;
}

.position-2 {
    background-color: #f3f4f6;
}

.position-3 {
    background-color: #fef3cd;
}

.no-results {
    text-align: center;
    color: #6b7280;
    padding: 40px;
    font-style: italic;
}

.stat-number {
    font-size: 2em;
    font-weight: bold;
    color: #667eea;
}

.stat-label {
    color: #6b7280;
    font-size: 0.9em;
}