body {
    font-family: system-ui, sans-serif;
    margin: 0;
    background: #102027;
    color: #eceff1;
}

.site-header {
    padding: 32px 16px;
    text-align: center;
    background: linear-gradient(180deg, #ff6f00, #d84315);
}

main {
    max-width: 640px;
    margin: 0 auto;
    padding: 24px 16px;
}

.level-tabs {
    display: flex;
    gap: 8px;
    margin: 16px 0;
    flex-wrap: wrap;
}

.level-tab-button {
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid #ff6f00;
    background: transparent;
    color: #eceff1;
    cursor: pointer;
}

.score-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    margin-bottom: 8px;
}

.score-name {
    font-weight: 600;
}

.score-detail {
    font-size: 0.85em;
    color: #b0bec5;
}

.score-value {
    font-weight: bold;
    color: #ffee58;
}

.score-empty {
    color: #b0bec5;
    font-style: italic;
}

#score-logout-button {
    margin-top: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid #ff6f00;
    background: transparent;
    color: #eceff1;
    cursor: pointer;
}