.wace-container {
    max-width: 1400px;
    margin: 30px auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
}

h2, h3 {
    text-align: center;
    color: #333;
}

.size-options {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin: 30px 0;
}

.size-btn {
    padding: 18px 30px;
    font-size: 18px;
    background: #f8f9fa;
    border: 3px solid #ddd;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    min-width: 220px;
}

.size-btn:hover, .size-btn.active {
    background: #5e72e4;
    color: white;
    border-color: #5e72e4;
    transform: translateY(-3px);
}

.toolbar {
    background: #f1f3f5;
    padding: 12px;
    border-radius: 10px;
    margin-bottom: 15px;
    text-align: center;
}

.toolbar button {
    margin: 5px;
    padding: 10px 18px;
    font-size: 15px;
}

.canvas-wrapper {
    border: 4px solid #333;
    background: #f8f9fa;
    display: inline-block;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border-radius: 8px;
    overflow: hidden;
}

.hidden {
    display: none !important;
}