.tap-area {
    width: 260px;
    height: 260px;
    background-color: #515559;
    border-radius: 0;
    clip-path: polygon(40px 0, calc(100% - 40px) 0,
            100% 40px, 100% calc(100% - 40px),
            calc(100% - 40px) 100%, 40px 100%,
            0 calc(100% - 40px), 0 40px);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    margin-bottom: 15px;
    user-select: none;
    transition: transform 0.1s, background-color 0.2s;
    position: relative;
    overflow: hidden;
    background-image: linear-gradient(145deg,
            rgba(0, 0, 0, 0) 0%,
            rgba(0, 0, 0, 0.2) 100%);
}

.tap-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    clip-path: polygon(40px 0, calc(100% - 40px) 0,
            100% 40px, 100% calc(100% - 40px),
            calc(100% - 40px) 100%, 40px 100%,
            0 calc(100% - 40px), 0 40px);
    box-shadow:
        inset 2px 2px 5px rgba(0, 0, 0, 0.5),
        inset -2px -2px 5px rgba(255, 255, 255, 0.05);
    pointer-events: none;
}

.tap-area.tapped {
    background-color: #f5a623;
    background-image: linear-gradient(145deg,
            rgba(0, 0, 0, 0.1) 0%,
            rgba(0, 0, 0, 0.3) 100%);
}

.tap-area.active {
    transform: scale(0.98);
}

.tap-area.stable {
    background-color: #4D5054;
}

.tap-area.flash {
    animation: flash-effect 0.15s ease-out;
}

@keyframes flash-effect {
    0% {
        background-color: #515559;
    }
    50% {
        background-color: #ffffff;
    }
    100% {
        background-color: #515559;
    }
}

.tap-text {
    font-size: 60px;
    color: #C5D6DD;
    font-weight: bold;
}

.tap-area.tapped .tap-text {
    color: #C64117;
}

.tap-area.stable .tap-text {
    color: #C5D6DD;
}

.controls {
    display: flex;
    width: 100%;
    justify-content: space-between;
    margin-bottom: 12px;
}

.control-btn {
    width: 48%;
    padding: 8px 0;
    background-color: #4D5054;
    border: none;
    color: #C5D6DD;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 12px;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
}

.control-btn:hover {
    background-color: #5a5d61;
}

.bottom-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-top: 15px;
}

.mute-control {
    display: flex;
    align-items: center;
}

.mute-checkbox {
    position: relative;
    width: 16px;
    height: 16px;
    margin-right: 8px;
    appearance: none;
    -webkit-appearance: none;
    background-color: #4D5054;
    border: 1px solid #555;
    border-radius: 3px;
    cursor: pointer;
    box-shadow: inset 0 0 3px rgba(0, 0, 0, 0.5);
}

.mute-checkbox:checked {
    background-color: #4a90e2;
}

.mute-checkbox:checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.mute-label {
    color: #C5D6DD;
    font-size: 12px;
    cursor: pointer;
}

.metronome-btn {
    background-color: #4D5054;
    border: none;
    color: #C5D6DD;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
}

.metronome-btn:hover {
    background-color: #5a5d61;
}

.metronome-btn.active {
    background-color: #4a90e2;
    color: white;
}