.bpm-panel {
    max-width: 480px;
    margin: 0 auto;
    text-align: center;
    padding: 40px 32px
}

.bpm-result {
    margin-bottom: 24px
}

.bpm-number {
    font-size: 6rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    display: block;
    transition: transform 0.1s
}

.bpm-number.pulse {
    transform: scale(1.05)
}

.bpm-unit {
    font-size: 1.2rem;
    color: var(--text-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px
}

.tap-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 32px
}

.stat-item {
    background: var(--bg);
    border-radius: var(--radius-sm);
    padding: 12px 8px
}

.stat-value {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text)
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px
}

.tap-btn {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 2px;
    border: none;
    box-shadow: 0 8px 32px rgba(108, 92, 231, 0.35);
    transition: transform 0.1s, box-shadow 0.1s;
    margin: 0 auto 16px;
    display: block;
    -webkit-user-select: none;
    user-select: none
}

.tap-btn:hover {
    transform: scale(1.03);
    box-shadow: 0 12px 40px rgba(108, 92, 231, 0.4)
}

.tap-btn:active {
    transform: scale(0.97);
    box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3)
}

.tap-hint {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-bottom: 20px
}

.reset-btn {
    margin: 0 auto;
    display: block
}

.tutorial-link-box {
    max-width: 480px;
    margin: 20px auto 0;
    text-align: center;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px dashed var(--border)
}

.tutorial-link-box a {
    font-weight: 600;
    font-size: 0.92rem
}

@media(max-width:768px) {
    .bpm-panel {
        padding: 28px 18px
    }

    .bpm-number {
        font-size: 4.5rem
    }

    .tap-btn {
        width: 160px;
        height: 160px;
        font-size: 1.6rem
    }

    .tap-stats {
        grid-template-columns: repeat(2, 1fr)
    }
}

@media(max-width:480px) {
    .bpm-number {
        font-size: 3.5rem
    }

    .tap-btn {
        width: 140px;
        height: 140px;
        font-size: 1.4rem
    }
}