.sumi-container {
    width: 100%;
    height: 600px;
    background: #111827;
    border-radius: 10px;
    overflow: hidden;
    font-family: Arial, sans-serif;
    margin: 20px 0;
}

.sumi-grid {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 12px;
    height: 100%;
    padding: 12px;
    box-sizing: border-box;
}

.sumi-panel {
    background: white;
    border-radius: 14px;
    padding: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,.2);
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow: auto;
}

.sumi-title {
    font-size: 20px;
    margin: 0 0 6px;
    color: #1f2937;
}

.sumi-control {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.sumi-label {
    font-size: 13px;
    color: #334155;
}

.sumi-value {
    font-size: 12px;
    color: #64748b;
}

.sumi-slider {
    flex: 1;
}

.sumi-checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.sumi-button-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.sumi-button-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.sumi-button {
    border: 0;
    border-radius: 10px;
    padding: 10px 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.sumi-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.sumi-button-primary {
    background: #6366f1;
    color: white;
}

.sumi-button-primary:hover {
    background: #5855eb;
}

.sumi-button-danger {
    background: #ef4444;
    color: white;
}

.sumi-button-danger:hover {
    background: #dc2626;
}

.sumi-button-secondary {
    background: #e5e7eb;
    color: #374151;
}

.sumi-button-secondary:hover {
    background: #d1d5db;
}

.sumi-canvas-container {
    position: relative;
    background: #f8fafc;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,.25);
    min-height: 400px;
}

.sumi-canvas {
    width: 100%;
    height: 100%;
    display: block;
    background: #f8fafc;
    border-radius: 14px;
    cursor: crosshair;
    touch-action: none;
}

.sumi-debug {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(255,255,255,0.9);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
    color: #374151;
    pointer-events: none;
}

.sumi-footer {
    margin-top: auto;
    font-size: 12px;
    color: #6b7280;
    text-align: center;
}

.sumi-help {
    font-size: 12px;
    color: #64748b;
    line-height: 1.4;
}

@media (max-width: 768px) {
    .sumi-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }
    
    .sumi-panel {
        order: 2;
        max-height: 200px;
    }
    
    .sumi-canvas-container {
        order: 1;
    }
}