/* Fullscreen presentation mode styles */
.presentation-mode {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #000;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.presentation-mode.loading,
.presentation-mode.error {
  flex-direction: column;
  background: #1a1a1a;
  color: #fff;
}

.presentation-mode .loading-spinner {
  font-size: 1.2rem;
  padding: 2rem;
  text-align: center;
}

.presentation-mode .error-content {
  text-align: center;
  max-width: 600px;
  padding: 2rem;
}

.presentation-mode .error-content h2 {
  margin: 0 0 1rem 0;
  font-size: 2rem;
  font-weight: 300;
}

.presentation-mode .error-content p {
  margin: 0 0 2rem 0;
  font-size: 1.1rem;
  opacity: 0.8;
  line-height: 1.5;
}

.presentation-mode .exit-button {
  background: #fff;
  color: #000;
  border: none;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.presentation-mode .exit-button:hover {
  background: #f0f0f0;
}

/* Fullscreen slide container */
.presentation-mode.fullscreen {
  background: #000;
}

.presentation-mode .slide-container {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.presentation-mode .slide-content {
  max-width: 90vw;
  max-height: 90vh;
  background: #fff;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

/* Aspect ratio classes for slides */
.presentation-mode .slide-content.aspect-16-9 {
  aspect-ratio: 16/9;
  width: min(90vw, calc(90vh * 16/9));
}

.presentation-mode .slide-content.aspect-4-3 {
  aspect-ratio: 4/3;
  width: min(90vw, calc(90vh * 4/3));
}

.presentation-mode .slide-content.aspect-16-10 {
  aspect-ratio: 16/10;
  width: min(90vw, calc(90vh * 16/10));
}

/* Navigation indicator */
.presentation-mode .navigation-indicator {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(10px);
  color: #fff;
  padding: 1rem 2rem;
  border-radius: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.presentation-mode:hover .navigation-indicator {
  opacity: 1;
}

.presentation-mode .slide-counter {
  font-size: 1.1rem;
  font-weight: 500;
}

.presentation-mode .navigation-hints {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
  opacity: 0.8;
}

.presentation-mode .navigation-hints span {
  white-space: nowrap;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .presentation-mode .navigation-indicator {
    bottom: 1rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .presentation-mode .navigation-hints {
    flex-direction: column;
    gap: 0.25rem;
    text-align: center;
  }
  
  .presentation-mode .slide-content {
    max-width: 95vw;
    max-height: 95vh;
  }
}

/* Hide scrollbars in presentation mode */
.presentation-mode * {
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}

.presentation-mode *::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

/* Ensure theme styles work in fullscreen */
.presentation-mode .slide-content > * {
  width: 100%;
  height: 100%;
}