body {
    margin: 0;
    padding: 0;
    background: #202124;
    color: #f1f3f4;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

h1 {
    text-align: center;
    margin: 12px 0;
    font-weight: 500;
}

#toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 8px 16px;
    border-bottom: 1px solid #3c4043;
    background: #2b2c2f;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: 6px;
    background: #303134;
}

.group-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #bdc1c6;
}

button {
    cursor: pointer;
    border: 1px solid #5f6368;
    background: #3c4043;
    color: #e8eaed;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    transition: background 0.1s, transform 0.05s;
}

button:hover {
    background: #5f6368;
}

button:active {
    transform: scale(0.97);
}

button.active {
    border-color: #8ab4f8;
    background: #1a73e8;
    color: #fff;
}

#colorButtons {
    display: flex;
    gap: 4px;
}

.color-btn {
    width: 24px;
    height: 24px;
    padding: 0;
    border-radius: 4px;
    border-width: 2px;
}

.file-label {
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid #5f6368;
    background: #3c4043;
    cursor: pointer;
    font-size: 0.85rem;
}

.file-label input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

#canvasContainer {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 16px;
}

#oricCanvas {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    border: 2px solid #5f6368;
    background: #000;
}

.hint {
    text-align: center;
    font-size: 0.85rem;
    color: #9aa0a6;
    margin-bottom: 12px;
}