.leaderboard-list {
    background: var(--bg-card);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow-color);
    margin-top: 20px;
}
.leaderboard-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}
.leaderboard-item:last-child {
    border-bottom: none;
}
.leaderboard-item:hover {
    background: var(--bg-secondary);
}
.rank {
    font-size: 1.5em;
    font-weight: bold;
    width: 40px;
    text-align: center;
    margin-right: 20px;
    color: var(--text-secondary);
}
.rank-1 { color: gold; }
.rank-2 { color: silver; }
.rank-3 { color: #cd7f32; } /* Bronze */

.user-info {
    display: flex;
    align-items: center;
    flex: 1;
    cursor: pointer;
}
.user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
    object-fit: cover;
}
.user-name {
    font-weight: bold;
    font-size: 1.1em;
    color: var(--text-primary);
}
.score {
    font-weight: bold;
    color: var(--accent-primary);
    font-size: 1.2em;
}
.score-label {
    font-size: 0.8em;
    color: var(--text-secondary);
    margin-left: 5px;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
.tab-navigation {
    display: flex;

    padding-bottom: 10px;
}
.tab-btn {
    padding: 12px 24px;
    border: none;
    background: var(--bg-secondary, #f0f0f0);
    color: var(--text-primary, #333);
    border-radius: 25px;
    cursor: pointer;
    white-space: nowrap;
    font-weight: 500;
    transition: all 0.2s;
    flex-shrink: 0;
}
.tab-btn.active {
    background: var(--accent-primary, #007bff);
    color: white;
}
.tab-btn:hover {
    transform: translateY(-1px);
}
.user-name {
    font-size: 1.05em;
}

@media (max-width: 768px) {
    .container {
        padding: 8px;
    }
    .tab-navigation {
        flex-direction: column;
        gap: 15px;
    }
    .leaderboard-item {
        padding: 10px 12px;
        gap: 8px;
    }
    .rank {
        width: 32px;
        font-size: 1.2em;
        margin-right: 8px;
    }
    .user-avatar {
        width: 38px;
        height: 38px;
    }
    .user-name {
        font-size: 1em;
    }
    .score {
        font-size: 1em;
        min-width: 70px;
    }
    h1 {
        font-size: 1.6em;
    }
}

@media (max-width: 480px) {
    .leaderboard-item {
        padding: 8px 10px;
        gap: 6px;
    }
    .rank {
        width: 28px;
        font-size: 1.1em;
    }
    .user-avatar {
        width: 34px;
        height: 34px;
    }
    .user-name {
        font-size: 0.95em;
    }
    .score {
        font-size: 0.95em;
        min-width: 60px;
    }
    .score-label {
        font-size: 0.75em;
    }
    h1 {
        font-size: 1.4em;
    }
}