body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #1f2937, #111827);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    width: 400px;
    text-align: center;
}

#steps-container {
    margin: 30px 0;
    min-height: 150px;
}

.step {
    opacity: 0.4;
    transition: all 0.3s ease;
    padding: 6px;
}

.step.active {
    font-size: 28px;
    opacity: 1;
    font-weight: bold;
    color: #22d3ee;
}

.controls button {
    background: #2563eb;
    border: none;
    color: white;
    padding: 12px 18px;
    margin: 5px;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.2s;
}

.controls button:hover {
    background: #3b82f6;
}

.slider-container {
    margin-top: 20px;
}