.gdp-app {
    --gdp-border: #d7dbe2;
    --gdp-panel: #ffffff;
    --gdp-soft: #f6f7f9;
    --gdp-text: #1f2937;
    --gdp-muted: #6b7280;
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    color: var(--gdp-text);
    font-family: inherit;
}

.gdp-app *,
.gdp-app *::before,
.gdp-app *::after {
    box-sizing: border-box;
}

.gdp-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding: 12px;
    margin-bottom: 12px;
    background: var(--gdp-panel);
    border: 1px solid var(--gdp-border);
    border-radius: 14px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.gdp-control {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.gdp-control label {
    font-size: 13px;
    font-weight: 700;
    color: var(--gdp-muted);
}

.gdp-color {
    width: 42px;
    height: 38px;
    padding: 0;
    border: 1px solid var(--gdp-border);
    border-radius: 9px;
    background: transparent;
    cursor: pointer;
}

.gdp-hex {
    width: 92px;
    height: 38px;
    padding: 6px 9px;
    border: 1px solid var(--gdp-border);
    border-radius: 9px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 14px;
}

.gdp-tool,
.gdp-reset-view {
    min-height: 38px;
    padding: 8px 12px;
    border: 1px solid var(--gdp-border);
    border-radius: 10px;
    background: var(--gdp-soft);
    color: var(--gdp-text);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.12s ease, background 0.12s ease, border-color 0.12s ease;
}

.gdp-tool:hover,
.gdp-reset-view:hover {
    transform: translateY(-1px);
}

.gdp-tool.is-active {
    background: #111827;
    color: #ffffff;
    border-color: #111827;
}

.gdp-zoom-control {
    min-width: 220px;
}

.gdp-zoom {
    width: 150px;
    accent-color: #111827;
}

.gdp-info {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-left: auto;
    color: var(--gdp-muted);
    font-size: 13px;
}

.gdp-coordinates,
.gdp-status {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 5px 9px;
    border-radius: 999px;
    background: var(--gdp-soft);
}

.gdp-canvas-shell {
    width: 100%;
    max-width: 100%;
    height: min(70vh, 720px);
    overflow: auto;
    border: 1px solid var(--gdp-border);
    border-radius: 14px;
    background-color: #f1f5f9;
    background-image:
        linear-gradient(45deg, #e2e8f0 25%, transparent 25%),
        linear-gradient(-45deg, #e2e8f0 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e2e8f0 75%),
        linear-gradient(-45deg, transparent 75%, #e2e8f0 75%);
    background-size: 24px 24px;
    background-position: 0 0, 0 12px, 12px -12px, -12px 0;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.45);
}

.gdp-canvas {
    display: block;
    width: 1000px;
    height: 600px;
    max-width: none;
    max-height: none;
    background: #ffffff;
    cursor: crosshair;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    touch-action: none;
}

.gdp-canvas.is-eyedropper {
    cursor: copy;
}

.gdp-help {
    margin-top: 10px;
    color: var(--gdp-muted);
    font-size: 14px;
}

@media (max-width: 720px) {
    .gdp-toolbar {
        align-items: stretch;
    }

    .gdp-control,
    .gdp-tool,
    .gdp-reset-view,
    .gdp-info {
        width: 100%;
    }

    .gdp-info {
        margin-left: 0;
    }

    .gdp-zoom-control {
        min-width: 100%;
    }

    .gdp-zoom {
        width: 100%;
    }
}