/**
 * @package     Webpublicity.Module.ImageSlider
 * @subpackage  mod_image_slider
 *
 * @copyright   (C) 2026 WebPublicity GmbH. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

/* CSS Custom Properties (defaults) */
.mod-image-slider {
    --image-slider-max-width: 100%;
    --image-slider-aspect-ratio: auto;
    --image-slider-border-radius: 8px;
    --image-slider-color: #ffffff;
    --image-slider-line-width: 4px;
    --image-slider-handle-size: 40px;
    --image-slider-position: 50%;
    --image-slider-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    --image-slider-label-bg: rgba(0, 0, 0, 0.6);
    --image-slider-label-color: #ffffff;
}

/* Main Container */
.mod-image-slider {
    position: relative;
    width: 100%;
    max-width: var(--image-slider-max-width);
    margin: 0 auto;
    overflow: hidden;
    border-radius: var(--image-slider-border-radius);
    user-select: none;
    -webkit-user-select: none;
    touch-action: pan-y pinch-zoom;
}

.mod-image-slider--shadow {
    box-shadow: var(--image-slider-shadow);
}

/* Wrapper */
.mod-image-slider__wrapper {
    position: relative;
    width: 100%;
    overflow: hidden;
}

/* Images */
.mod-image-slider__image {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

/* Before image - establishes container dimensions */
.mod-image-slider__image--before {
    position: relative;
    z-index: 1;
}

/* After image - positioned on top */
.mod-image-slider__image--after {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

/* When a specific aspect ratio is set */
.mod-image-slider__wrapper[style*="--image-slider-aspect-ratio"] {
    aspect-ratio: var(--image-slider-aspect-ratio);
}

.mod-image-slider__wrapper[style*="--image-slider-aspect-ratio"] .mod-image-slider__image--before {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
}

/* Horizontal clipping (default) */
.mod-image-slider--horizontal .mod-image-slider__image--after {
    clip-path: inset(0 calc(100% - var(--image-slider-position)) 0 0);
}

/* Vertical clipping */
.mod-image-slider--vertical .mod-image-slider__image--after {
    clip-path: inset(0 0 calc(100% - var(--image-slider-position)) 0);
}

/* Slider Handle */
.mod-image-slider__handle {
    position: absolute;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

/* Horizontal handle positioning */
.mod-image-slider--horizontal .mod-image-slider__handle {
    top: 0;
    bottom: 0;
    left: var(--image-slider-position);
    width: 0;
    transform: translateX(-50%);
    flex-direction: column;
}

/* Vertical handle positioning */
.mod-image-slider--vertical .mod-image-slider__handle {
    left: 0;
    right: 0;
    top: var(--image-slider-position);
    height: 0;
    transform: translateY(-50%);
    flex-direction: row;
}

/* Handle Line */
.mod-image-slider__handle-line {
    position: absolute;
    background-color: var(--image-slider-color);
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
}

.mod-image-slider--horizontal .mod-image-slider__handle-line {
    width: var(--image-slider-line-width);
    height: 100%;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.mod-image-slider--vertical .mod-image-slider__handle-line {
    height: var(--image-slider-line-width);
    width: 100%;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
}

/* Handle Circle */
.mod-image-slider__handle-circle {
    position: relative;
    width: var(--image-slider-handle-size);
    height: var(--image-slider-handle-size);
    background-color: var(--image-slider-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    cursor: ew-resize;
    pointer-events: auto;
    transition: transform 0.15s ease;
}

.mod-image-slider--vertical .mod-image-slider__handle-circle {
    cursor: ns-resize;
}

.mod-image-slider__handle-circle:hover {
    transform: scale(1.1);
}

.mod-image-slider__handle-circle:active {
    transform: scale(0.95);
}

/* Handle Arrows SVG */
.mod-image-slider__handle-arrows {
    width: 60%;
    height: 60%;
    color: #333;
}

/* Labels */
.mod-image-slider__label {
    position: absolute;
    z-index: 5;
    padding: 6px 14px;
    background-color: var(--image-slider-label-bg);
    color: var(--image-slider-label-color);
    font-size: 14px;
    font-weight: 500;
    border-radius: 4px;
    pointer-events: none;
    user-select: none;
    white-space: nowrap;
}

/* Horizontal label positioning */
.mod-image-slider--horizontal .mod-image-slider__label--before {
    bottom: 16px;
    left: 16px;
}

.mod-image-slider--horizontal .mod-image-slider__label--after {
    bottom: 16px;
    right: 16px;
}

/* Vertical label positioning */
.mod-image-slider--vertical .mod-image-slider__label--before {
    top: 16px;
    left: 16px;
}

.mod-image-slider--vertical .mod-image-slider__label--after {
    bottom: 16px;
    left: 16px;
}

/* Interaction Modes */

/* Hover mode - larger hit area */
.mod-image-slider--hover .mod-image-slider__wrapper {
    cursor: ew-resize;
}

.mod-image-slider--hover.mod-image-slider--vertical .mod-image-slider__wrapper {
    cursor: ns-resize;
}

/* Both mode - show cursor on wrapper too */
.mod-image-slider--both .mod-image-slider__wrapper {
    cursor: ew-resize;
}

.mod-image-slider--both.mod-image-slider--vertical .mod-image-slider__wrapper {
    cursor: ns-resize;
}

/* Drag mode - only handle is interactive */
.mod-image-slider--drag .mod-image-slider__wrapper {
    cursor: default;
}

/* Active dragging state */
.mod-image-slider.is-dragging {
    cursor: ew-resize !important;
}

.mod-image-slider.is-dragging.mod-image-slider--vertical {
    cursor: ns-resize !important;
}

.mod-image-slider.is-dragging .mod-image-slider__handle-circle {
    transform: scale(1.1);
}

/* Accessibility - focus styles */
.mod-image-slider:focus-visible {
    outline: 3px solid #0066cc;
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .mod-image-slider__handle,
    .mod-image-slider__label {
        display: none;
    }
    
    .mod-image-slider__image--after {
        clip-path: none !important;
        opacity: 0.5;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .mod-image-slider__handle-circle {
        transition: none;
    }
}