/**
 * Interplast 360° Product Viewer — Styles
 * Version: 1.0.0
 */

/* ========================================
   Container
   ======================================== */

.product-technical-details__body {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

/* ========================================
   Viewer (image stack)
   ======================================== */

.product-technical-details__360-degree-viewer {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
}

.product-technical-details__360-degree-viewer.grabbing {
  cursor: grabbing;
}

.product-technical-details__360-degree-viewer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  width: 100%;
  height: 100%;
}

/* All images hidden by default */
.product-technical-details__360-degree-viewer__list li {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Only active image visible */
.product-technical-details__360-degree-viewer__list li.active {
  display: block;
}

.product-technical-details__360-degree-viewer__list li img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

/* ========================================
   Navigation / Zoom Controls
   ======================================== */

.input-slider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 16px 0;
  user-select: none;
}

.input-slider p {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: #333;
  min-width: 36px;
  text-align: center;
}

.input-slider .viewer-prev-next,
.input-slider .viewer-zoom-in-out {
  border: 1px solid #ccc;
  border-radius: 20px;
}

.input-slider .viewer-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  padding: 0;
  line-height: 1;
}

.input-slider .viewer-nav-btn:hover {
  background: #f0f0f0;
}

.input-slider .viewer-nav-btn:active {
  background: #e0e0e0;
}

.input-slider .viewer-nav-btn svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: #333;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ========================================
   Drag hint overlay (optional)
   ======================================== */

.product-technical-details__360-degree-viewer .drag-hint {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.4s;
}

.product-technical-details__360-degree-viewer .drag-hint.hidden {
  opacity: 0;
}

/* ========================================
   Preload Overlay
   ======================================== */

.viewer-preload-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 24px;
  background: linear-gradient(to top, rgba(0,0,0,0.25) 0%, transparent 100%);
  transition: opacity 0.5s;
}

.viewer-preload-overlay.viewer-preload-done {
  opacity: 0;
  pointer-events: none;
}

.viewer-preload-inner {
  width: 220px;
  text-align: center;
}

.viewer-preload-bar {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
  overflow: hidden;
}

.viewer-preload-fill {
  width: 0%;
  height: 100%;
  background: #fff;
  border-radius: 2px;
  transition: width 0.15s ease-out;
}

.viewer-preload-text {
  margin: 6px 0 0;
  font-size: 12px;
  color: #fff;
  font-weight: 500;
}

/* ========================================
   Zoom transform on images
   ======================================== */

.product-technical-details__360-degree-viewer .product-image img {
  transition: transform 0.3s ease;
  transform-origin: center center;
  will-change: transform;
}

/* ========================================
   Mobile responsive
   ======================================== */

@media (max-width: 768px) {
  .product-technical-details__360-degree-viewer__list li img {
    scale: 1.5;
  }

  /* Only animate when NOT dragging */
  .product-technical-details__360-degree-viewer:not(.grabbing) .product-image img {
    transition: transform 0.3s ease;
  }

  .product-technical-details__360-degree-viewer .product-image img {
    transition: none;
    transform-origin: center center;
    will-change: transform;
  }

  .product-technical-details__360-degree-viewer {
    overflow: hidden;
    touch-action: none;
    height: 400px;
  }

  .input-slider {
    margin-top: 20px;
  }

  .product-technical-details__body {
    padding: 0px;
  }
}