html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}

.presentation-page {
  background: #10243b;
  color: #fff;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

.presentation-header {
  position: fixed;
  z-index: 30;
  top: 0;
  right: 0;
  left: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1.25rem;
  align-items: center;
  height: 64px;
  padding: 0 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(16, 36, 59, 0.96);
}

.presentation-header__back {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: #f6e8b5;
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
}

.presentation-header__back:hover,
.presentation-header__back:focus {
  color: #fff;
  text-decoration: underline;
}

.presentation-header__back svg {
  width: 1rem;
  height: 1rem;
  fill: currentColor;
}

.presentation-header__title {
  display: flex;
  min-width: 0;
  align-items: baseline;
  gap: 0.75rem;
}

.presentation-header__title span {
  color: #aebfd0;
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  white-space: nowrap;
}

.presentation-header__title strong {
  overflow: hidden;
  font-size: 0.85rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.presentation-header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.presentation-header__count {
  color: #aebfd0;
  font-size: 0.72rem;
  white-space: nowrap;
}

.presentation-fullscreen {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: #f6e8b5;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, opacity 200ms ease;
  -webkit-tap-highlight-color: transparent;
}

.presentation-fullscreen:hover,
.presentation-fullscreen:focus-visible {
  background: rgba(246, 232, 181, 0.12);
  color: #fff;
  outline: none;
}

.presentation-fullscreen:focus-visible {
  box-shadow: 0 0 0 2px #f6e8b5;
}

.presentation-fullscreen[aria-pressed="true"] {
  background: rgba(16, 36, 59, 0.58);
  color: #fff;
  backdrop-filter: blur(8px);
}

.presentation-fullscreen svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.reveal {
  height: calc(100% - 64px) !important;
  margin-top: 64px;
}

.reveal .slides section {
  padding: 0;
  text-align: center;
}

.reveal .slides section img {
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  background: #fff;
  object-fit: contain;
}

.reveal .controls {
  color: #e0b127;
}

.reveal .progress {
  height: 4px;
  background: rgba(255, 255, 255, 0.16);
}

.reveal .progress span {
  background: #e0b127;
}

.reveal .slide-number {
  padding: 0.35rem 0.55rem;
  border-radius: 6px;
  background: rgba(16, 36, 59, 0.8);
  color: #fff;
  font-size: 12px;
}

.presentation-expanded .presentation-header {
  height: 0;
  padding: 0;
  border: 0;
  background: transparent;
  pointer-events: none;
}

.presentation-expanded .presentation-header__back,
.presentation-expanded .presentation-header__title,
.presentation-expanded .presentation-header__count {
  display: none;
}

.presentation-expanded .presentation-header__actions {
  position: fixed;
  top: max(0.75rem, env(safe-area-inset-top));
  right: max(0.75rem, env(safe-area-inset-right));
  pointer-events: auto;
}

.presentation-expanded.presentation-control-idle .presentation-fullscreen:not(:focus-visible) {
  opacity: 0;
  pointer-events: none;
}

.presentation-expanded .reveal {
  height: 100dvh !important;
  margin-top: 0;
}

.presentation-noscript {
  position: fixed;
  z-index: 40;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  padding: 1rem;
  border-radius: 8px;
  background: #fff;
  color: #172f4d;
  text-align: center;
}

@media (max-width: 700px) {
  .presentation-header {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.75rem;
    padding: 0 0.85rem;
  }

  .presentation-header__title span,
  .presentation-header__count {
    display: none;
  }

  .presentation-header__title {
    justify-content: flex-end;
  }

  .presentation-header__title strong {
    max-width: 100%;
    font-size: 0.72rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .presentation-fullscreen {
    transition: none;
  }
}