body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

#toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #444;
    padding: 15px 20px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
}

#toolbar button, #toolbar select, #toolbar input {
    font-size: 16px;
    padding: 8px 12px;
    margin: 0;
    border: none;
    border-radius: 5px;
    background: #fff;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
}

#toolbar button:hover, #toolbar select:hover, #toolbar input:hover {
    background: #f5f5f5;
    transform: scale(1.05);
}

#toolbar button:active, #toolbar select:active, #toolbar input:active {
    background: #e1e1e1;
}

#toolbar select {
    width: 150px;
}

#toolbar input[type="color"] {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
    cursor: pointer;
}

#toolbar input[type="number"] {
    width: 70px;
}

canvas {
    display: block;
    width: 100%;
    height: calc(100% - 60px);
    background-color: white;
    position: absolute;
    top: 60px;
    left: 0;
    border: 1px solid #ccc;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    #toolbar {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }

    #toolbar button, #toolbar select, #toolbar input {
        width: 100%;
    }
}