/* Слайдер + lightbox блока кейсов монтажа (локально только для страницы 3/) */

.install-slider-wrap {
  position: relative;
  --inst-gap: clamp(20px, 3vw, 36px);
}

.install-slider-arrow {
  position: absolute;
  top: clamp(90px, 22vw, 130px);
  z-index: 2;
  width: 44px;
  height: 44px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
  cursor: pointer;
  color: var(--color-text, #222);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.install-slider-arrow:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.16);
}

.install-slider-arrow:focus-visible {
  outline: 2px solid rgb(245, 130, 32);
  outline-offset: 2px;
}

.install-slider-arrow:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  box-shadow: none;
}

.install-slider-arrow--prev {
  left: 0;
  transform: translateX(calc(-50% + 8px));
}

.install-slider-arrow--next {
  right: 0;
  transform: translateX(calc(50% - 8px));
}

@media (max-width: 560px) {
  .install-slider-arrow {
    width: 40px;
    height: 40px;
    top: clamp(70px, 28vw, 110px);
  }

  .install-slider-arrow--prev {
    transform: translateX(-4px);
  }

  .install-slider-arrow--next {
    transform: translateX(4px);
  }
}

.install-slider-viewport {
  container-type: inline-size;
  container-name: install-view;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
  margin: 0 clamp(36px, 5vw, 52px);
  outline: none;
}

.install-slider-viewport::-webkit-scrollbar {
  display: none;
}

.install-slider-viewport:focus-visible {
  box-shadow: inset 0 0 0 2px rgba(245, 130, 32, 0.35);
  border-radius: 8px;
}

.install-slider-track {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: var(--inst-gap);
  align-items: stretch;
  padding: 4px 0 12px;
}

.install-slider-wrap .install-example-loc {
  margin-bottom: 0;
}

.install-slider-item {
  flex: 0 0 auto;
  width: calc((100cqi - 2 * var(--inst-gap)) / 3);
  scroll-snap-align: start;
  scroll-snap-stop: always;
  min-width: 0;
}

@media (max-width: 960px) {
  .install-slider-item {
    width: min(360px, 82cqi);
  }
}

button.install-example-media {
  display: block;
  width: 100%;
  margin: 0 0 14px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  overflow: hidden;
  line-height: 0;
  background: #eaeaea;
  cursor: pointer;
  text-align: left;
}

button.install-example-media:focus-visible {
  outline: 2px solid rgb(245, 130, 32);
  outline-offset: 3px;
}

button.install-example-media img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 360 / 257;
  object-fit: cover;
}

/* ---------- Lightbox ---------- */

.install-lightbox-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.68);
}

.install-lightbox {
  position: fixed;
  inset: 0;
  z-index: 10050;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 4vw, 48px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.install-lightbox.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.install-lightbox__panel {
  position: relative;
  z-index: 1;
  max-width: min(920px, 100%);
  width: 100%;
  background: rgba(18, 18, 18, 0.35);
  border-radius: 10px;
  padding: clamp(12px, 2vw, 20px);
  box-sizing: border-box;
}

.install-lightbox__title {
  margin: 0 0 14px;
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 700;
  line-height: 1.35;
  color: #fff;
}

.install-lightbox__close {
  position: absolute;
  top: clamp(12px, 2vw, 16px);
  right: clamp(12px, 2vw, 16px);
  z-index: 3;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.install-lightbox__close:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.install-lightbox__stage-wrap {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  /* как у остальной панели — без отдельного чёрного, буквинг совпадает с низом */
  background: transparent;
}

.install-lightbox__img {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(72vh, 640px);
  object-fit: contain;
  touch-action: pan-y;
}

.install-lightbox__nav {
  position: absolute;
  top: 50%;
  translate: 0 -50%;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: rgba(238, 238, 238, 0.95);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #222;
}

.install-lightbox__nav--prev {
  left: 10px;
}

.install-lightbox__nav--next {
  right: 10px;
}

.install-lightbox__nav:focus-visible {
  outline: 2px solid rgb(245, 130, 32);
}

.install-lightbox__counter {
  margin-top: 10px;
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}