:root {
    --primary: #f43f5e; /* Rose */
    --bg-gradient: linear-gradient(135deg, #ffe4e6, #fecdd3, #fda4af);
}

.whiteboard-area {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
    width: 100%;
}

.toolbar {
    display: flex;
    gap: 15px;
    background: #fff;
    padding: 10px 20px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.btn-tool {
    background: #e2e8f0;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    font-family: inherit;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
}

.btn-tool:hover {
    background: #cbd5e1;
}

.btn-tool.active {
    background: var(--primary);
    color: white;
}

.canvas-container {
    width: 100%;
    height: 60vh;
    background: #fff;
    border-radius: 12px;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1), 0 10px 15px -3px rgba(0,0,0,0.1);
    overflow: hidden;
    touch-action: none; /* Prevent scrolling when drawing */
}

#drawing-canvas {
    width: 100%;
    height: 100%;
    cursor: crosshair;
}