:root {
    --primary-color: #f0f0f0;
    --secondary-color: #333;
    --accent-color: #007bff;
    --background-color: #f9f9f9;
    --noise-texture: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAiIGhlaWdodD0iMTAwIj48ZmlsdGVyIGlkPSJub2lzZSI+PGZlVHVyYnVsZW5jZSB0eXBlPSJmcmFjdGFsTm9pc2UiIGJhc2VGcmVxdWVuY3k9IjAuNjUiIG51bU9jdGF2ZXM9IjMiIHN0aXRjaFRpbGVzPSJzdGl0Y2giLz48L2ZpbHRlcj48cmVjdCB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiBmaWx0ZXI9InVybCgjbm9pc2UpIiBvcGFjaXR5PSIwLjEiLz48L3N2Zz4=');
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--secondary-color);
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    background-image: var(--noise-texture);
}

header {
    width: 100%;
    text-align: center;
    padding: 2rem 0;
    background-color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
}

main {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    padding: 2rem;
    width: 100%;
    max-width: 1200px;
}

.controls {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1), 0 6px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    min-width: 300px;
}

h2 {
    margin-top: 0;
    font-size: 1.8rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.color-picker-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

label {
    font-size: 1.1rem;
}

input[type="color"] {
    -webkit-appearance: none;
    width: 44px;
    height: 44px;
    border: none;
    cursor: pointer;
    border-radius: 50%;
    box-shadow: 0 0 0 3px white, 0 0 0 4px var(--secondary-color);
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 50%;
}

button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    font-size: 1.1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    filter: brightness(1.1);
}

.preview {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

#canvas {
    width: 100%;
    max-width: 600px;
    height: auto;
    aspect-ratio: 16 / 9;
    border-radius: 12px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1), 0 6px 6px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    main {
        flex-direction: column;
        align-items: center;
    }

    .controls {
        width: 100%;
        max-width: 400px;
    }
}

.shapes-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    padding: 2rem;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1), 0 6px 6px rgba(0, 0, 0, 0.1);
}

.shape {
    width: 100px;
    height: 100px;
}

.shape-circle {
    background-color: var(--accent-color);
    border-radius: 50%;
}

.shape-square {
    background-color: var(--accent-color);
}

.shape-triangle {
    width: 0;
    height: 0;
    border-left: 50px solid transparent;
    border-right: 50px solid transparent;
    border-bottom: 100px solid var(--accent-color);
    background-color: transparent;
}

.shape-rectangle {
    width: 150px;
    height: 100px;
    background-color: var(--accent-color);
}

.shape-oval {
    width: 150px;
    height: 100px;
    background-color: var(--accent-color);
    border-radius: 50%;
}