#curves-svg {
    cursor: crosshair;
    user-select: none;
}

.control-point {
    cursor: grab;
    transition: all 0.2s;
}

.control-point:hover circle {
    r: 10;
    fill: #2ecc71;
}

.control-point circle {
    r: 7;
    fill: #3498db;
    stroke: white;
    stroke-width: 3;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.control-point.dragging {
    cursor: grabbing;
}

.control-point.dragging circle {
    r: 10;
    fill: #e74c3c;
}

#curve-line {
    pointer-events: none;
}

.histogram {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.3;
}

.curves-info {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
    font-size: 12px;
    color: #666;
}

.presets-section {
    margin-bottom: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 6px;
}

.presets-section h4 {
    margin: 0 0 12px 0;
    font-size: 14px;
    color: #555;
    font-weight: 600;
}

.hint-small {
    font-size: 11px;
    color: #999;
    font-weight: 400;
}

.presets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.preset-btn {
    padding: 12px 10px;
    background: white;
    border: 2px solid #ddd;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.preset-btn:hover {
    border-color: #3498db;
    background: #e3f2fd;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.preset-btn.active {
    border-color: #2ecc71;
    background: #d5f4e6;
    box-shadow: 0 0 0 2px rgba(46, 204, 113, 0.2);
}

.preset-icon {
    font-size: 20px;
    line-height: 1;
}

.preset-name {
    font-size: 11px;
    font-weight: 600;
    color: #555;
}

.curve-info {
    margin-top: 10px;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 4px;
    font-size: 12px;
}

.curve-info p {
    margin: 0;
    color: #666;
}

.curves-presets {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.comparison-view {
    position: relative;
    width: 100%;
}

.comparison-slider {
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    background: #3498db;
    cursor: ew-resize;
    z-index: 10;
}

.comparison-slider::before,
.comparison-slider::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    background: #3498db;
    border-radius: 50%;
    border: 3px solid white;
}

.comparison-slider::before {
    top: 10px;
}

.comparison-slider::after {
    bottom: 10px;
}

.before-image,
.after-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.after-image {
    clip-path: inset(0 0 0 50%);
}