* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

header h1 {
    color: #4a5568;
    font-size: 2rem;
    margin-bottom: 10px;
}

.status {
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-block;
    transition: all 0.3s ease;
}

.status.disconnected {
    background: #feb2b2;
    color: #c53030;
}

.status.connecting {
    background: #fbd38d;
    color: #d69e2e;
}

.status.connected {
    background: #9ae6b4;
    color: #38a169;
}

main {
    /* flex: 1; */
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 150px;
    justify-content: center;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, #4299e1, #3182ce);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #f56565, #e53e3e);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #ecc94b, #d69e2e);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, #a0aec0, #718096);
    color: white;
}

.audio-visualizer {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    display: flex;
    gap: 20px;
    justify-content: center;
}

.visualizer-container {
    text-align: center;
}

.visualizer-label {
    margin-top: 10px;
    font-size: 0.9rem;
    color: #666;
    font-weight: 500;
}

canvas {
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    background: #f7fafc;
}


footer {
    text-align: center;
    margin-top: 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .audio-visualizer {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .controls {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    canvas {
        width: 300px;
        height: 75px;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
}