/* =============================================================
   LIGHTBOX
   ============================================================= */

/* ---- Overlay ---- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  background-color: rgba(8, 8, 8, 0.96);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: all;
}

/* ---- Close button ---- */
.lightbox__close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-6);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  background: none;
  border: none;
  transition: color var(--transition-fast);
  z-index: 10;
  line-height: 1;
}

.lightbox__close:hover {
  color: #ffffff;
}

/* ---- Counter  ---- */
.lightbox__counter {
  position: absolute;
  top: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-xs);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  pointer-events: none;
  white-space: nowrap;
}

/* ---- Main image stage ---- */
.lightbox__stage {
  flex: 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 60px var(--space-16) var(--space-4);
}

.lightbox__img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  border-radius: 2px;
  transition: opacity 0.2s ease, transform 0.2s ease;
  user-select: none;
  -webkit-user-drag: none;
}

.lightbox__img.is-fading {
  opacity: 0;
  transform: scale(0.97);
}

/* ---- Prev / Next arrows ---- */
.lightbox__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 1.5rem;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.06);
  border: none;
  border-radius: 50%;
  transition: background var(--transition-fast), color var(--transition-fast);
  z-index: 10;
}

.lightbox__arrow:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.lightbox__arrow--prev { left: var(--space-4); }
.lightbox__arrow--next { right: var(--space-4); }

.lightbox__arrow:disabled {
  opacity: 0.2;
  cursor: default;
}

/* ---- Caption ---- */
.lightbox__caption {
  padding: var(--space-3) var(--space-6) 0;
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.06em;
  text-align: center;
  min-height: 1.5em;
}

/* ---- Thumbnail strip ---- */
.lightbox__thumbs {
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6) var(--space-6);
  width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
  flex-shrink: 0;
}

.lightbox__thumbs::-webkit-scrollbar { display: none; }

.lightbox__thumb {
  width: 64px;
  height: 48px;
  object-fit: cover;
  object-position: center;
  border-radius: 2px;
  opacity: 0.4;
  cursor: pointer;
  flex-shrink: 0;
  border: 1.5px solid transparent;
  transition: opacity var(--transition-fast), border-color var(--transition-fast);
  -webkit-user-drag: none;
}

.lightbox__thumb:hover {
  opacity: 0.75;
}

.lightbox__thumb.is-active {
  opacity: 1;
  border-color: #ffffff;
}

/* ---- "Click to view" affordance on project images ---- */
.project-photo-trigger {
  position: relative;
  cursor: pointer;
  display: block;
  width: 100%;
  height: 100%;
}

.project-photo-trigger::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0);
  transition: background var(--transition);
  border-radius: inherit;
}

.project-photo-trigger:hover::after {
  background: rgba(0, 0, 0, 0.18);
}

.project-photo-trigger__badge {
  position: absolute;
  bottom: var(--space-3);
  right: var(--space-3);
  z-index: 2;
  background: rgba(0, 0, 0, 0.55);
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: var(--space-1) var(--space-3);
  border-radius: 3px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  pointer-events: none;
  transition: background var(--transition-fast);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--transition), transform var(--transition);
}

.project-photo-trigger:hover .project-photo-trigger__badge {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================= */
/* RESPONSIVE                                                     */
/* ============================================================= */

@media (min-width: 640px) {
  .lightbox__thumbs {
    display: flex;
  }
}

@media (min-width: 768px) {
  .lightbox__arrow--prev { left: var(--space-8); }
  .lightbox__arrow--next { right: var(--space-8); }

  .lightbox__thumb {
    width: 80px;
    height: 60px;
  }
}