.buttons {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    margin: 8rem 0 1.25rem 0;
    flex-wrap: wrap;
}

.sound-button {
    padding: 1.5rem 2rem;
    font-size: 1rem;
    cursor: pointer;
    border: 2px solid var(--accent);
    border-radius: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.sound-button::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.5s;
    opacity: 0;
}

.sound-button:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    border-color: #764ba2;
}

.sound-button:hover::after {
    animation: shimmer 0.5s ease-in-out;
}

.sound-button:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.3);
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); opacity: 0; }
}

.sound-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent) 0%, #5a35a8 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.sound-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
    border-color: var(--accent);
}

.sound-button:hover::before {
    opacity: 0.1;
}

.sound-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.play-icon {
    font-size: 1.25rem;
    cursor: pointer;
    color: white;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.play-icon:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

@media (max-width: 1440px) {
    .buttons {
        gap: 1.125rem;
        margin-bottom: 1.125rem;
    }
    .sound-button {
        padding: 1.2rem;
        font-size: 0.95rem;
    }
    .play-icon {
        font-size: 1.4375rem;
    }
}

@media (max-width: 1024px) {
    .buttons {
        gap: 1rem;
        margin-bottom: 1rem;
    }
    .sound-button {
        padding: 1.15rem;
        font-size: 0.9rem;
    }
    .play-icon {
        font-size: 1.375rem;
    }
}

@media (max-width: 768px) {
    .buttons {
        gap: 0.875rem;
        margin-bottom: 0.875rem;
        flex-direction: column;
        align-items: center;
    }
    .sound-button {
        padding: 1.1rem;
        font-size: 0.85rem;
    }
    .play-icon {
        font-size: 1.3125rem;
    }
}

@media (max-width: 480px) {
    .buttons {
        gap: 0.75rem;
        margin-bottom: 0.75rem;
    }
    .sound-button {
        padding: 1.05rem;
        font-size: 0.8rem;
    }
    .play-icon {
        font-size: 1.25rem;
    }
}

@media (max-width: 375px) {
    .buttons {
        gap: 0.625rem;
        margin-bottom: 0.625rem;
    }
    .sound-button {
        padding: 1rem;
        font-size: 0.75rem;
    }
    .play-icon {
        font-size: 1.1875rem;
    }
}