/* Close button - top right */
.close-container {
  position: fixed;
  top: 0;
  right: 0;
  z-index: var(--z-controls);
  padding: var(--spacing-md);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

body.controls-visible .close-container {
  opacity: 1;
  pointer-events: auto;
}

/* Menu - bottom right */
.menu-container {
  position: fixed;
  bottom: 0;
  right: 0;
  z-index: var(--z-controls);
  padding: var(--spacing-md);
  display: flex;
  gap: var(--spacing-sm);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

body.controls-visible .menu-container {
  opacity: 1;
  pointer-events: auto;
}

.icon-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  cursor: pointer;

  /* Apple Liquid Glass effect */
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.4) 0%,
    rgba(255, 255, 255, 0.25) 100%
  );
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);

  /* Subtle borders and shadows */
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.15),
    0 2px 8px rgba(0, 0, 0, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    inset 0 -1px 0 rgba(0, 0, 0, 0.05),
    0 0 0 0.5px rgba(255, 255, 255, 0.2);

  /* Smooth transitions */
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);

  /* Icon color */
  color: rgba(0, 0, 0, 0.75);
}

.icon-button:hover {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.5) 0%,
    rgba(255, 255, 255, 0.35) 100%
  );
  box-shadow:
    0 12px 48px rgba(0, 0, 0, 0.2),
    0 4px 12px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.6),
    inset 0 -1px 0 rgba(0, 0, 0, 0.05),
    0 0 0 0.5px rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.icon-button:active {
  transform: translateY(0) scale(0.96);
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.15),
    0 1px 4px rgba(0, 0, 0, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    inset 0 -1px 0 rgba(0, 0, 0, 0.05),
    0 0 0 0.5px rgba(255, 255, 255, 0.2);
}

/* Slide container */
.slide-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0; /* No padding - fullscreen */
  background-color: #333333;
  overflow: hidden;
}

.slides-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  transition: transform 0.3s ease-out;
}

.slide-image {
  position: absolute;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
  flex-shrink: 0;
}

.slide-prev {
  left: -100%;
}

.slide-current {
  left: 0;
  right: 0;
  margin: 0 auto;
}

.slide-next {
  right: -100%;
  left: auto;
}

/* Scroll container */
.scroll-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow-y: auto;
  overflow-x: hidden;
  background-color: #b2b2b2;
  padding: var(--spacing-md) 0;
}

.scroll-slide {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto var(--spacing-md) auto;
  display: block;
}

.scroll-slide:last-child {
  margin-bottom: 0;
}

/* Hide slide container in scroll mode */
body.scroll-mode .slide-container {
  display: none;
}

body.scroll-mode .scroll-container {
  display: block;
}

/* Hide navigation areas in scroll mode */
body.scroll-mode .nav-area {
  display: none;
}

/* Show progress bar in scroll mode */
body.scroll-mode .progress-container {
  opacity: 1;
  pointer-events: auto;
}

/* Click areas for navigation */
.nav-area {
  position: fixed;
  top: 0;
  bottom: 0;
  width: 30%;
  z-index: 5;
  cursor: pointer;
}

.nav-area-prev {
  left: 0;
  cursor: w-resize;
}

.nav-area-next {
  right: 0;
  cursor: e-resize;
}

.nav-area:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

/* Navigation buttons - hidden, we use click areas instead */
.nav-button {
  display: none;
}

/* Progress bar - bottom of screen */
.progress-container {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-progress);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

body.controls-visible .progress-container {
  opacity: 1;
  pointer-events: auto;
}

.progress-bar {
  position: relative;
  height: 4px;
  background: var(--progress-bg);
  cursor: pointer;
  transition: height var(--transition-fast);
}

.progress-bar:hover {
  height: 6px;
}

.progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--progress-fill);
  transition: width var(--transition-fast);
}

/* Thumbnail preview */
.thumbnail-preview {
  position: absolute;
  bottom: calc(100% + var(--spacing-sm));
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-xs);
  background: var(--thumbnail-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 4px 12px var(--thumbnail-shadow);
  pointer-events: none;
  z-index: var(--z-thumbnail);
}

.thumbnail-image {
  max-width: 200px;
  max-height: 150px;
  display: block;
  border-radius: 4px;
}

.thumbnail-number {
  text-align: center;
  margin-top: var(--spacing-xs);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Loading state */
.slide-image[src=""] {
  display: none;
}

/* Responsive */
@media (max-width: 768px) {
  .slide-title {
    font-size: 1rem;
  }

  .nav-button {
    width: 50px;
    height: 50px;
  }

  .thumbnail-image {
    max-width: 150px;
    max-height: 112px;
  }
}


/* Share Modal */
.share-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(4px);
}

.share-modal-content {
  background: var(--bg-primary);
  border-radius: 12px;
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.share-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.share-modal-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
}

.modal-close-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-secondary);
  transition: background var(--transition-fast);
}

.modal-close-button:hover {
  background: var(--border-color);
}

.share-modal-body {
  padding: var(--spacing-lg);
}

.share-option {
  margin-bottom: var(--spacing-lg);
}

.share-option:last-child {
  margin-bottom: 0;
}

.share-option h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.share-option p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-sm);
}

.share-mode-options {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.share-mode-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  flex: 1;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.share-mode-option:hover {
  background: var(--bg-secondary);
}

.share-mode-option input[type="radio"] {
  cursor: pointer;
}

.share-mode-option input[type="radio"]:checked + span {
  font-weight: 600;
}

.share-mode-option:has(input[type="radio"]:checked) {
  border-color: var(--progress-fill);
  background: rgba(160, 32, 240, 0.05);
}

.share-input-group {
  display: flex;
  gap: var(--spacing-sm);
}

.share-input,
.share-textarea {
  flex: 1;
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
  font-size: 0.875rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.share-textarea {
  min-height: 80px;
  resize: vertical;
}

.copy-button {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--text-primary);
  color: var(--bg-primary);
  border-radius: 6px;
  font-weight: 500;
  transition: opacity var(--transition-fast);
}

.copy-button:hover {
  opacity: 0.8;
}

.copy-button:active {
  transform: scale(0.95);
}

/* Overview Modal */
.overview-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 100;
}

.overview-modal-content {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-md);
  padding-top: calc(var(--spacing-md) + 60px);
}

.overview-modal-header {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 101;
}

.overview-modal-header .modal-close-button {
  /* Brighter version for dark background */
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.95) 0%,
    rgba(255, 255, 255, 0.85) 100%
  );
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.4),
    0 2px 8px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.1),
    0 0 0 0.5px rgba(255, 255, 255, 0.5);
}

.overview-modal-header .modal-close-button:hover {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 1) 0%,
    rgba(255, 255, 255, 0.95) 100%
  );
  box-shadow:
    0 12px 48px rgba(0, 0, 0, 0.5),
    0 4px 12px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.1),
    0 0 0 0.5px rgba(255, 255, 255, 0.6);
}

.overview-modal-header h2 {
  display: none;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  width: 100%;
}

.overview-slide {
  position: relative;
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  background: var(--bg-secondary);
}

.overview-slide:hover {
  transform: scale(1.05);
  border-color: var(--progress-fill);
}

.overview-slide.active {
  border-color: var(--progress-fill);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.2);
}

.overview-slide-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #f0f0f0;
  display: block;
}

.overview-slide-number {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* Loading spinner */
.slide-image.loading {
  opacity: 0;
}

.slide-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top-color: rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  z-index: 10;
}

@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@media (max-width: 768px) {
  .overview-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-sm);
  }

  /* Hide fullscreen button on mobile */
  #fullscreen-toggle {
    display: none;
  }
}