/* ================================================================
   lightbox.css  --  Full-screen viewer: container, toolbar, stage,
                     image, navigation, zoom, swap, regions overlay
   ================================================================ */

/* ---------- Container ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  display: none;
  flex-direction: column;
  z-index: 9990;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* Remove default focus outline on all lightbox buttons; show only for keyboard nav */
.lightbox button {
  outline: none;
}

.lightbox button:focus-visible {
  outline: 2px solid #4dabf7;
  outline-offset: 2px;
}

/* Prevent drag on interactive elements */
.lightbox img,
.lightbox .lb-title,
.lightbox .channel-slider label,
.lightbox .channel-slider span {
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  -o-user-drag: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

/* ---------- Stage ---------- */

.lb-stage {
  position: relative;
  padding: 16px;
  width: 100%;
  height: auto;
  min-height: calc(100vh - 150px);
  margin-top: 0;
  padding-bottom: 60px;
  display: grid;
  place-items: center;
  flex: 1;
  overflow: hidden;
}

/* ---------- Image wrapper (zoom / pan target) ---------- */

.lb-img-wrapper {
  position: relative;
  display: inline-block;
  will-change: transform;
  transform-origin: center center;
  transition: transform 0.15s ease-out;
}

.lb-img-wrapper.zoomed {
  transition: none;
}

/* ---------- Main image ---------- */

.lb-img {
  display: block;
  width: auto;
  height: auto;
  max-width: calc(100vw - 32px);
  max-height: calc(100vh - 150px);
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 8px 60px rgba(0, 0, 0, 0.6);
  user-select: none;
  pointer-events: auto;
  cursor: default;
  image-rendering: auto;
}

.lb-img.zoomed {
  cursor: default;
  max-width: calc(100vw - 32px);
  max-height: calc(100vh - 150px);
}

/* ---------- Regions overlay ---------- */

.regions-overlay-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  border-radius: 8px;
  z-index: 5;
}

.regions-overlay-canvas.interactive {
  pointer-events: auto;
  cursor: crosshair;
}

/* ---------- Regions toggle ---------- */

.regions-toggle {
  display: none;
  background: rgba(0, 200, 200, 0.15);
  border: 1px solid rgba(0, 255, 255, 0.4);
  color: #0ff;
  padding: 6px 14px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--btn-transition);
  text-shadow: 0 0 8px rgba(0, 255, 255, 0.3);
}

.regions-toggle:hover {
  background: rgba(0, 255, 255, 0.25);
  border-color: rgba(0, 255, 255, 0.6);
  color: #fff;
  text-shadow: 0 0 12px rgba(0, 255, 255, 0.5);
}

.regions-toggle.active {
  background: rgba(0, 255, 255, 0.3);
  border-color: rgba(0, 255, 255, 0.7);
  color: #fff;
  text-shadow: 0 0 12px rgba(0, 255, 255, 0.6);
}

.regions-toggle.loading {
  opacity: 0.6;
  cursor: wait;
}

/* ---------- Region tooltip ---------- */

.region-tooltip {
  position: fixed;
  display: none;
  background: rgba(20, 20, 25, 0.95);
  border: 1px solid rgba(77, 171, 247, 0.4);
  border-radius: 8px;
  padding: 10px 14px;
  pointer-events: none;
  z-index: 1000;
  max-width: 280px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  transform: translate(15px, 15px);
}

.region-tooltip-name {
  color: #4dabf7;
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.region-tooltip-name .color-swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  flex-shrink: 0;
}

.region-tooltip-details {
  color: #aaa;
  font-size: 11px;
  line-height: 1.5;
}

.region-tooltip-details strong {
  color: #ccc;
}

/* ---------- Toolbar (top bar) ---------- */

.lb-top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  background: var(--chrome-bg);
  -webkit-backdrop-filter: blur(var(--chrome-blur));
  backdrop-filter: blur(var(--chrome-blur));
  border-bottom: 1px solid #2a2f3a;
  padding: 12px 20px;
  font-size: 13px;
  z-index: 9995;
  box-sizing: border-box;
  max-height: none;
  overflow: visible;
  transition: transform 0.3s ease;
}

.lb-top.hidden {
  transform: translateY(-100%);
  pointer-events: none;
  height: 0;
  overflow: hidden;
  padding: 0;
  min-height: 0;
}

/* Protective overlay for toolbar gap */
.toolbar-gap-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  display: none;
  pointer-events: none;
  z-index: 9994;
}

.lb-top.hidden ~ .toolbar-gap-overlay {
  display: block;
  pointer-events: auto;
}

/* Toolbar restore indicator */
.toolbar-restore-indicator {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 32px;
  border: none;
  background: linear-gradient(to bottom, rgba(79, 172, 254, 0.95), rgba(79, 172, 254, 0.85));
  color: white;
  font-size: 16px;
  cursor: pointer;
  z-index: 9996;
  display: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 0;
  align-items: center;
  justify-content: center;
  border-radius: 0 0 4px 4px;
}

.toolbar-restore-indicator.visible {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

.toolbar-restore-indicator:hover {
  background: linear-gradient(to bottom, rgba(33, 150, 243, 1), rgba(33, 150, 243, 0.95));
}

/* ---------- Toolbar layout ---------- */

.lb-top-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lb-title-row {
  display: flex;
  align-items: center;
  min-height: 28px;
  flex-shrink: 0;
}

.lb-buttons-row {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.lb-buttons-row:first-child {
  align-items: center;
}

.lb-buttons-left {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.lb-buttons-right {
  display: flex;
  gap: 8px;
  align-items: center;
}

.lb-title {
  font-weight: 500;
  user-select: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  flex: 0 1 auto;
}

/* ---------- Swap folder button ---------- */

.swap-folder-btn {
  flex-shrink: 0;
  padding: 6px 10px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid #4b90ff;
  background: rgba(75, 144, 255, 0.15);
  color: #4b90ff;
  cursor: pointer;
  transition: var(--btn-transition);
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-height: 32px;
  min-width: 80px;
  max-width: 140px;
  margin-left: 12px;
}

.swap-folder-btn:hover {
  background: rgba(75, 144, 255, 0.25);
  border-color: #6ba3ff;
  transform: translateY(-1px);
}

.swap-folder-btn:active {
  background: rgba(75, 144, 255, 0.35);
}

.swap-folder-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---------- Icon button ---------- */

.iconbtn {
  border: 1px solid #2a2f3a;
  background: #0f1116;
  border-radius: 6px;
  padding: 6px 10px;
  color: #e8e8e8;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 12px;
  font-weight: 500;
  min-height: 32px;
  min-width: 32px;
  transition: var(--btn-transition);
}

.iconbtn:hover {
  background: #1a1f2e;
  border-color: #3a3f4a;
  transform: translateY(-1px);
}

.iconbtn:focus {
  outline: 2px solid #4b90ff;
  outline-offset: 2px;
}

/* ---------- Close button ---------- */

#lbClose {
  background: rgba(255, 107, 107, 0.15);
  border: 1px solid #ff6b6b;
  color: #ff6b6b;
  font-weight: 700;
  font-size: 13px;
  min-width: 70px;
  padding: 6px 12px;
  outline: none;
}

#lbClose:hover {
  background: rgba(255, 107, 107, 0.25);
  border-color: #ff8b8b;
  color: #ff8b8b;
}

#lbClose:active {
  background: rgba(255, 107, 107, 0.35);
}

#lbClose:focus {
  outline: none;
}

#lbClose:focus-visible {
  outline: 2px solid #ff6b6b;
  outline-offset: 2px;
}

/* ---------- Hide-toolbar button ---------- */

#lbHideToolbar {
  background: rgba(79, 172, 254, 0.15);
  border: 1px solid #4facfe;
  color: #4facfe;
  font-weight: 700;
  font-size: 16px;
  padding: 6px 12px;
  outline: none;
  transition: var(--btn-transition);
}

#lbHideToolbar:hover {
  background: rgba(79, 172, 254, 0.25);
  border-color: #6fbbfe;
}

#lbHideToolbar:focus {
  outline: none;
}

#lbHideToolbar:focus-visible {
  outline: 2px solid #4facfe;
  outline-offset: 2px;
}

/* ---------- Panel toggle buttons (shared base) ---------- */
/*
   .metadata-toggle, .atlas-toggle, .legend-toggle share the same
   base styling; only the .active color differs.
*/

.metadata-toggle,
.atlas-toggle,
.legend-toggle {
  background: #333;
  border: 1px solid #555;
  border-radius: 6px;
  color: white;
  font-size: 11px;
  font-weight: 500;
  padding: 6px 10px;
  cursor: pointer;
  transition: var(--btn-transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
}

.metadata-toggle:hover,
.atlas-toggle:hover,
.legend-toggle:hover {
  background: #444;
  transform: translateY(-1px);
}

.metadata-toggle.active {
  background: #4CAF50;
  border-color: #45a049;
  color: white;
}

.atlas-toggle.active {
  background: #2196F3;
  border-color: #0b7dda;
  color: white;
}

.legend-toggle.active {
  background: #9d6ec7;
  border-color: #8a5aa3;
  color: white;
}

/* ---------- Prev / Next / Counter ---------- */

.lb-nav {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.lb-prev,
.lb-next {
  position: relative;
  background: var(--chrome-bg);
  -webkit-backdrop-filter: blur(var(--chrome-blur));
  backdrop-filter: blur(var(--chrome-blur));
  border: 1px solid #2a2f3a;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  min-width: 32px;
  font-weight: 600;
  font-size: 14px;
  transition: var(--btn-transition);
}

.lb-prev:hover,
.lb-next:hover {
  background: #1a1f2e;
  border-color: #3a3f4a;
  transform: translateY(-1px);
}

.lb-prev {
  order: 1;
}

.lb-next {
  order: 3;
}

.lb-counter {
  position: relative;
  order: 2;
  font-size: 12px;
  color: #cfd6e4;
  background: var(--chrome-bg);
  -webkit-backdrop-filter: blur(var(--chrome-blur));
  backdrop-filter: blur(var(--chrome-blur));
  border-radius: 999px;
  padding: 4px 8px;
  border: 1px solid #2a2f3a;
  z-index: 2;
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- Bottom controls & zoom ---------- */

.lb-bottom-controls {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: nowrap;
  z-index: 2;
  padding: 0 8px;
  max-width: calc(100vw - 32px);
}

.zoom-display {
  position: absolute;
  bottom: 54px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 14px;
  font-weight: 600;
  color: #4dabf7;
  background: var(--chrome-bg);
  -webkit-backdrop-filter: blur(var(--chrome-blur));
  backdrop-filter: blur(var(--chrome-blur));
  border-radius: 8px;
  padding: 6px 12px;
  border: 1px solid rgba(0, 123, 255, 0.3);
  z-index: 9994;
  font-family: monospace;
  min-width: 60px;
  text-align: center;
  user-select: none;
  cursor: pointer;
  transition: var(--btn-transition);
  white-space: nowrap;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
}

.zoom-display:hover {
  background: rgba(0, 123, 255, 0.2);
  border-color: rgba(0, 123, 255, 0.5);
  transform: translateX(-50%) translateY(-1px);
}

/* ---------- Gesture hint (mobile) ---------- */

.gesture-hint {
  display: none;
  position: fixed;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.85);
  color: #fff;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 11px;
  text-align: center;
  z-index: 9999;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  max-width: 90vw;
  line-height: 1.3;
}

.gesture-hint.visible {
  opacity: 1;
}