:root {
  --vlb-accent: #ffffff;
  --vlb-backdrop: rgba(0, 0, 0, 0.84);
  --vlb-panel: #0b0b0d;
  --vlb-text: #ffffff;
  --vlb-radius: 16px;
  --vlb-shadow: 0 24px 80px rgba(0, 0, 0, 0.48);
  --vlb-speed: 420ms;
}

* {
  box-sizing: border-box;
}

html.video-lightbox-open,
html.video-lightbox-open body {
  overflow: hidden;
}

/* تصویر کاور */
.video-lightbox-trigger {
  position: relative;
  display: block;
  width: min(100%, 900px);
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: var(--vlb-radius);
  background: #c3040400;
  color: #e72327;
  cursor: pointer;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.18);
  isolation: isolate;
  border-radius: 80px;
}

.video-lightbox-trigger::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.42), transparent 58%);
  transition: background-color 220ms ease;
}

.video-lightbox-trigger:hover::after,
.video-lightbox-trigger:focus-visible::after {
  background-color: rgba(0, 0, 0, 0.12);
}

.video-lightbox-trigger:focus-visible {
  outline: 3px solid #3b82f6;
  outline-offset: 4px;
}

.video-lightbox-poster {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 9;
  object-fit: cover;
  transition: transform 450ms ease;
}

.video-lightbox-trigger:hover .video-lightbox-poster,
.video-lightbox-trigger:focus-visible .video-lightbox-poster {
  transform: scale(1.025);
}

.video-lightbox-play {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 2;
  display: grid;
  width: clamp(58px, 8vw, 84px);
  aspect-ratio: 1;
  place-items: center;
  border: 2px solid rgba(255, 255, 255, 0.86);
  border-radius: 999px;
  background: rgb(231 35 39);
  color: #fff;
  transform: translate(-50%, -50%);
  backdrop-filter: blur(7px);
  transition: transform 220ms ease, background-color 220ms ease;
}

.video-lightbox-trigger:hover .video-lightbox-play,
.video-lightbox-trigger:focus-visible .video-lightbox-play {
  background: rgba(0, 0, 0, 0.76);
  transform: translate(-50%, -50%) scale(1.08);
}

.video-lightbox-play svg {
  width: 40%;
  height: 40%;
  margin-left: 6%;
  fill: currentColor;
}

.video-lightbox-caption {
  position: absolute;
  right: 22px;
  bottom: 18px;
  left: 22px;
  z-index: 2;
  color: #fff;
  font: 900 clamp(20px, 2.5vw, 18px) / 1.4 IranSansBlack, sans-serif;
  text-align: center;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.85);
}

/* لایت‌باکس */
.video-lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  display: grid;
  place-items: start center;
  padding: clamp(18px, 5vh, 52px) 16px;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 260ms ease, visibility 0s linear 420ms;
}

.video-lightbox-modal.is-open {
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0s;
}

.video-lightbox-modal.is-visible {
  opacity: 1;
}

.video-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: var(--vlb-backdrop);
  backdrop-filter: blur(5px);
}

.video-lightbox-panel {
  position: relative;
  z-index: 1;
  width: min(100%, 1040px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--vlb-radius);
  background: var(--vlb-panel);
  color: var(--vlb-text);
  box-shadow: var(--vlb-shadow);
  opacity: 0;
  transform: translateY(calc(-100% - 80px)) scaleY(0.92);
  transform-origin: top center;
  transition:
    transform var(--vlb-speed) cubic-bezier(0.16, 1, 0.3, 1),
    opacity 240ms ease;
}

.video-lightbox-modal.is-visible .video-lightbox-panel {
  opacity: 1;
  transform: translateY(0) scaleY(1);
}

.video-lightbox-header {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 10px 9px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  direction: rtl;
}

.video-lightbox-title {
  margin: 0;
  overflow: hidden;
  font: 700 16px / 1.5 Arial, sans-serif;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.video-lightbox-close {
  flex: 0 0 auto;
  display: grid;
  width: 38px;
  aspect-ratio: 1;
  place-items: center;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  cursor: pointer;
  transition: background-color 180ms ease, transform 180ms ease;
}

.video-lightbox-close:hover,
.video-lightbox-close:focus-visible {
  background: rgba(255, 255, 255, 0.22);
  transform: rotate(90deg);
}

.video-lightbox-close:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.video-lightbox-close svg {
  width: 21px;
  height: 21px;
  stroke: currentColor;
  stroke-width: 2;
}

.video-lightbox-stage {
  position: relative;
  display: grid;
  width: 100%;
  aspect-ratio: 16 / 9;
  place-items: center;
  overflow: hidden;
  background: #000;
}

.video-lightbox-stage video,
.video-lightbox-stage iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #000;
}

.video-lightbox-stage video {
  object-fit: contain;
}

.video-lightbox-loading {
  position: absolute;
  z-index: 0;
  width: 46px;
  aspect-ratio: 1;
  border: 4px solid rgba(255, 255, 255, 0.22);
  border-top-color: #fff;
  border-radius: 50%;
  animation: vlb-spin 800ms linear infinite;
}

.video-lightbox-error {
  max-width: 560px;
  margin: 0;
  padding: 28px;
  color: #ffb4b4;
  font: 600 15px / 1.8 Arial, sans-serif;
  text-align: center;
  direction: rtl;
}

@keyframes vlb-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 640px) {
  .video-lightbox-modal {
    padding: 12px;
  }

  .video-lightbox-panel {
    border-radius: 11px;
  }

  .video-lightbox-header {
    min-height: 48px;
  }

  .video-lightbox-caption {
    right: 14px;
    bottom: 12px;
    left: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .video-lightbox-modal,
  .video-lightbox-panel,
  .video-lightbox-poster,
  .video-lightbox-play,
  .video-lightbox-close {
    transition-duration: 1ms !important;
  }

  .video-lightbox-loading {
    animation: none;
  }
}