:root {
  --deck-background: #07101f;
  --deck-foreground: #e7e1d6;
  --deck-accent: #8e1116;
  --viewer-background: #080a0f;
  --viewer-foreground: #f2eee7;
  --viewer-outline: rgba(255, 255, 255, 0.2);
  --viewer-shadow: 0 24px 80px rgba(0, 0, 0, 0.58);
  --deck-aspect: 1.7777778;
  --deck-viewport-height: 100dvh;
  color-scheme: dark;
}

:root[data-surface="light"] {
  --viewer-background: #f2efe8;
  --viewer-foreground: #191816;
  --viewer-outline: rgba(18, 17, 15, 0.28);
  --viewer-shadow: 0 24px 80px rgba(26, 23, 18, 0.24);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
  background: var(--viewer-background);
}

body {
  color: var(--viewer-foreground);
  font-family: Arial, Helvetica, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

button,
a {
  font: inherit;
}

button {
  color: inherit;
}

.deck-app,
.deck-viewport {
  position: fixed;
  inset: 0;
}

.deck-app {
  background:
    radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--viewer-foreground) 4%, transparent), transparent 64%),
    var(--viewer-background);
  transition: background-color 180ms ease;
}

.deck-viewport {
  z-index: 1;
  display: grid;
  place-items: center;
  padding: 14px 64px;
  touch-action: none;
  cursor: default;
}

.deck-stage {
  position: relative;
  width: min(calc(100vw - 128px), calc((100dvh - 28px) * var(--deck-aspect)));
  max-width: 1920px;
  aspect-ratio: var(--deck-aspect);
  flex: none;
  overflow: visible;
  outline: none;
}

.slide-transform {
  position: absolute;
  inset: 0;
  transform: translate3d(var(--deck-pan-x, 0), var(--deck-pan-y, 0), 0) scale(var(--deck-zoom, 1));
  transform-origin: 50% 50%;
  transition: transform 180ms ease;
  will-change: transform;
}

.slide-transform.is-panning,
.slide-transform.is-pinching {
  transition: none;
}

.slide-canvas {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: var(--deck-background);
  box-shadow: 0 0 0 1px var(--viewer-outline), var(--viewer-shadow);
  transition: opacity 90ms ease, transform 120ms ease, box-shadow 180ms ease;
}

.slide-canvas.is-changing {
  opacity: 0.72;
  transform: translate3d(0, var(--deck-change-shift, 0), 0);
}

.slide-image,
.text-layer,
.link-layer {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.slide-image {
  z-index: 1;
  object-fit: cover;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
}

.text-layer {
  z-index: 2;
  overflow: hidden;
  color: rgba(0, 0, 0, 0.01);
  -webkit-text-fill-color: rgba(0, 0, 0, 0.01);
  user-select: text;
  -webkit-user-select: text;
  cursor: text;
}

.text-layer ::selection {
  color: transparent;
  background: rgba(65, 137, 255, 0.42);
  -webkit-text-fill-color: transparent;
}

.text-word {
  position: absolute;
  display: block;
  margin: 0;
  padding: 0;
  overflow: visible;
  white-space: pre;
  line-height: 1;
  font-family: Arial, Helvetica, sans-serif;
  transform-origin: 0 0;
}

.text-frame {
  position: absolute;
  margin: 0;
  padding: 0;
  overflow: hidden;
  font-synthesis: none;
}

.text-paragraph {
  margin: 0;
  padding: 0;
  white-space: pre-wrap;
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
}

.text-run {
  margin: 0;
  padding: 0;
}

.link-layer {
  z-index: 3;
  pointer-events: none;
}

.slide-link {
  position: absolute;
  display: block;
  min-width: 1px;
  min-height: 1px;
  border-radius: 3px;
  color: transparent;
  background: transparent;
  pointer-events: auto;
  cursor: pointer;
  touch-action: none;
}

.slide-link:focus-visible {
  outline: 3px solid var(--viewer-foreground);
  outline-offset: 3px;
  background: color-mix(in srgb, var(--deck-accent) 12%, transparent);
}

.deck-toolbar,
.deck-navigation,
.deck-zoom {
  position: fixed;
  z-index: 20;
  display: flex;
  align-items: center;
  border: 1px solid color-mix(in srgb, var(--viewer-foreground) 14%, transparent);
  background: color-mix(in srgb, var(--viewer-background) 82%, transparent);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.deck-toolbar {
  top: max(14px, env(safe-area-inset-top));
  right: max(14px, env(safe-area-inset-right));
  gap: 8px;
  min-height: 44px;
  padding: 5px 7px 5px 12px;
  border-radius: 999px;
  opacity: 0.72;
  transition: opacity 160ms ease;
}

.deck-toolbar:hover,
.deck-toolbar:focus-within,
.deck-navigation:hover,
.deck-navigation:focus-within,
.deck-zoom:hover,
.deck-zoom:focus-within {
  opacity: 1;
}

.language-switch {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.language-switch a {
  color: color-mix(in srgb, var(--viewer-foreground) 58%, transparent);
  text-decoration: none;
}

.language-switch a:hover,
.language-switch a:focus-visible,
.language-switch a[aria-current="page"] {
  color: var(--viewer-foreground);
}

.language-switch a:focus-visible {
  outline: 2px solid var(--viewer-foreground);
  outline-offset: 3px;
  border-radius: 2px;
}

.deck-navigation {
  top: 50%;
  right: max(14px, env(safe-area-inset-right));
  flex-direction: column;
  gap: 7px;
  padding: 8px 6px;
  border-radius: 999px;
  opacity: 0.54;
  transform: translateY(-50%);
}

.deck-zoom {
  bottom: max(14px, env(safe-area-inset-bottom));
  left: 50%;
  gap: 3px;
  padding: 5px 7px;
  border-radius: 999px;
  opacity: 0.58;
  transform: translateX(-50%);
}

.deck-button {
  display: grid;
  width: 34px;
  height: 34px;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--viewer-foreground);
  cursor: pointer;
}

.surface-button {
  width: auto;
  min-width: 58px;
  grid-auto-flow: column;
  gap: 6px;
  padding: 0 9px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.09em;
}

.surface-icon {
  width: 13px;
  height: 13px;
  border: 1px solid currentColor;
  border-radius: 50%;
  background: linear-gradient(90deg, #f3f0e9 0 50%, #101116 50% 100%);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, currentColor 12%, transparent);
}

.surface-button[data-mode="light"] .surface-icon {
  background: #f3f0e9;
}

.surface-button[data-mode="dark"] .surface-icon {
  background: #101116;
}

.deck-button:hover,
.deck-button:focus-visible {
  outline: none;
  background: var(--deck-accent);
}

.deck-button:disabled {
  cursor: default;
  opacity: 0.2;
}

.deck-button:disabled:hover {
  background: transparent;
}

.fullscreen-icon {
  width: 15px;
  height: 15px;
  border: 1.5px solid currentColor;
  border-radius: 2px;
}

.page-counter {
  display: grid;
  min-width: 30px;
  justify-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--viewer-foreground) 72%, transparent);
}

.page-counter i {
  display: block;
  width: 1px;
  height: 14px;
  background: var(--deck-accent);
}

.zoom-level {
  width: auto;
  min-width: 54px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.deck-status,
.rotation-message {
  position: fixed;
  z-index: 30;
  left: 50%;
  padding: 9px 14px;
  border: 1px solid color-mix(in srgb, var(--viewer-foreground) 16%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--viewer-background) 88%, transparent);
  color: var(--viewer-foreground);
  font-size: 12px;
  letter-spacing: 0.03em;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity 160ms ease, transform 160ms ease;
  backdrop-filter: blur(12px);
}

.deck-status {
  top: 18px;
}

.rotation-message {
  bottom: max(74px, calc(env(safe-area-inset-bottom) + 62px));
}

.deck-status.is-visible,
.rotation-message.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.noscript {
  position: fixed;
  inset: 0;
  display: grid;
  margin: 0;
  padding: 24px;
  place-items: center;
  background: var(--viewer-background);
  color: var(--viewer-foreground);
}

.deck-pseudo-fullscreen {
  position: fixed;
  inset: 0;
  width: 100%;
  height: var(--deck-viewport-height);
  overflow: hidden;
}

.deck-pseudo-fullscreen .deck-viewport,
.deck-auto-landscape .deck-viewport {
  height: var(--deck-viewport-height);
  padding: 0;
}

.deck-pseudo-fullscreen .deck-stage,
.deck-auto-landscape .deck-stage {
  width: min(100vw, calc(var(--deck-viewport-height) * var(--deck-aspect)));
  max-width: none;
}

.deck-auto-landscape .slide-canvas,
.deck-pseudo-fullscreen .slide-canvas {
  box-shadow: 0 0 0 1px var(--viewer-outline);
}

@media (orientation: landscape) and (max-height: 560px) {
  .deck-auto-landscape .deck-toolbar,
  .deck-pseudo-fullscreen .deck-toolbar {
    top: max(6px, env(safe-area-inset-top));
    right: max(6px, env(safe-area-inset-right));
  }

  .deck-auto-landscape .deck-navigation,
  .deck-pseudo-fullscreen .deck-navigation {
    right: max(5px, env(safe-area-inset-right));
  }

  .deck-auto-landscape .deck-zoom,
  .deck-pseudo-fullscreen .deck-zoom {
    bottom: max(5px, env(safe-area-inset-bottom));
  }
}

@media (max-width: 720px) {
  .deck-viewport {
    padding: 10px 12px;
  }

  .deck-stage {
    width: min(calc(100vw - 24px), calc((100dvh - 20px) * var(--deck-aspect)));
  }

  .slide-canvas {
    box-shadow: 0 0 0 1px var(--viewer-outline), var(--viewer-shadow);
  }

  .deck-toolbar {
    top: max(10px, env(safe-area-inset-top));
    right: max(10px, env(safe-area-inset-right));
    min-height: 40px;
    padding: 3px 5px 3px 10px;
    opacity: 0.84;
  }

  .deck-navigation {
    right: max(8px, env(safe-area-inset-right));
    gap: 3px;
    padding: 5px 4px;
    opacity: 0.78;
  }

  .deck-zoom {
    bottom: max(9px, env(safe-area-inset-bottom));
    opacity: 0.82;
  }

  .deck-button {
    width: 32px;
    height: 32px;
  }

  .surface-button {
    width: auto;
    min-width: 54px;
    padding: 0 7px;
  }

  .page-counter {
    min-width: 27px;
    font-size: 10px;
  }
}

@media (orientation: portrait) and (max-width: 720px) {
  .deck-stage {
    width: calc(100vw - 24px);
  }

  .deck-navigation {
    top: auto;
    right: auto;
    bottom: max(62px, calc(env(safe-area-inset-bottom) + 56px));
    left: 50%;
    flex-direction: row;
    transform: translateX(-50%);
  }

  .page-counter {
    display: flex;
    align-items: center;
    min-width: auto;
    padding: 0 3px;
  }

  .page-counter i {
    width: 14px;
    height: 1px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .slide-transform,
  .slide-canvas,
  .deck-toolbar,
  .deck-app,
  .deck-status,
  .rotation-message {
    transition: none;
  }
}


.deck-home {
  position: fixed;
  z-index: 21;
  top: 10px;
  left: 14px;
  display: grid;
  place-items: center;
  height: 40px;
  padding: 0 15px;
  border: 1px solid color-mix(in srgb, var(--viewer-foreground) 14%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--viewer-background) 82%, transparent);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0.82;
  transition: opacity 180ms ease;
}

.deck-home:hover,
.deck-home:focus-visible {
  opacity: 1;
}

.deck-home img {
  display: block;
  width: 86px;
  height: auto;
}

:root[data-surface="light"] .deck-home img {
  filter: invert(1);
}