/* Additional custom styles */
.eq-visualizer {
    display: flex;
    gap: 2px;
    align-items: end;
    height: 20px;
    margin: 5px 0;
}

.eq-bar {
    width: 3px;
    background: linear-gradient(to top, #ff6b35, #e55a2e);
    transition: height 0.1s ease;
    border-radius: 1px;
}

.battery-indicator {
    position: absolute;
    top: 15px;
    right: 60px;
    width: 20px;
    height: 8px;
    border: 1px solid #666;
    border-radius: 2px;
    background: linear-gradient(to right, #4CAF50 0%, #4CAF50 70%, #333 70%);
}

.battery-indicator::after {
    content: '';
    position: absolute;
    right: -3px;
    top: 2px;
    width: 2px;
    height: 4px;
    background: #666;
    border-radius: 0 1px 1px 0;
}

.esp-indicator {
    position: absolute;
    top: 120px;
    right: 20px;
    font-size: 8px;
    color: #ff6b35;
    font-weight: bold;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.esp-indicator.active {
    opacity: 1;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

.error-message {
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid #ff4444;
    color: #ff6666;
    padding: 10px;
    border-radius: 5px;
    margin: 10px 0;
    font-size: 14px;
}

.success-message {
    background: rgba(0, 255, 0, 0.1);
    border: 1px solid #44ff44;
    color: #66ff66;
    padding: 10px;
    border-radius: 5px;
    margin: 10px 0;
    font-size: 14px;
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 107, 53, 0.3);
    border-radius: 50%;
    border-top-color: #ff6b35;
    animation: spin 1s ease-in-out infinite;
}

.track-waveform {
    height: 30px;
    background: repeating-linear-gradient(
        90deg,
        rgba(255, 107, 53, 0.1) 0px,
        rgba(255, 107, 53, 0.1) 1px,
        transparent 1px,
        transparent 4px
    );
    border-radius: 3px;
    margin: 5px 0;
}