/* Original native HTML slide runtime for ISE 5405. */

.native-deck {
  --ns-ink: #182428;
  --ns-ink-soft: #435158;
  --ns-muted: #667176;
  --ns-paper: #fffefc;
  --ns-shell: #e9e8e5;
  --ns-soft: #f5f3ef;
  --ns-rule: #d9d7d1;
  --ns-maroon: #861f41;
  --ns-maroon-dark: #65152f;
  --ns-orange: #e87722;
  --ns-blue: #2f668e;
  --ns-green: #277a48;
  --ns-danger: #a23b32;
  --ns-focus: #1769aa;
  --ns-serif: "Source Serif 4", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --ns-sans: Inter, Aptos, "Helvetica Neue", Arial, sans-serif;
  --ns-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  display: grid;
  min-width: 300px;
  min-height: 100dvh;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
  background: var(--ns-shell);
  color: var(--ns-ink);
  font-family: var(--ns-sans);
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

.native-deck,
.native-deck *,
.native-deck *::before,
.native-deck *::after {
  box-sizing: border-box;
}

.native-deck [hidden] {
  display: none !important;
}

.native-deck button,
.native-deck input,
.native-deck select,
.native-deck textarea {
  font: inherit;
}

.native-deck button,
.native-deck summary {
  cursor: pointer;
}

.native-deck button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.native-deck a {
  color: var(--ns-maroon-dark);
  text-underline-offset: 0.16em;
}

.native-deck :focus-visible {
  outline: 3px solid var(--ns-focus);
  outline-offset: 3px;
}

.ns-skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.6rem;
  left: 0.6rem;
  min-height: 44px;
  padding: 0.7rem 1rem;
  transform: translateY(-180%);
  border-radius: 4px;
  background: var(--ns-maroon-dark);
  color: white !important;
  font-weight: 700;
}

.ns-skip-link:focus {
  transform: translateY(0);
}

.ns-masthead {
  position: relative;
  z-index: 5;
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem clamp(0.75rem, 2vw, 1.5rem);
  border-bottom: 1px solid var(--ns-rule);
  background: color-mix(in srgb, var(--ns-paper), transparent 2%);
}

.ns-identity {
  display: flex;
  min-width: 0;
  align-items: baseline;
  gap: 0.8rem;
}

.ns-course {
  flex: 0 0 auto;
  color: var(--ns-maroon);
  font-family: var(--ns-mono);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ns-identity strong {
  overflow: hidden;
  font-family: var(--ns-serif);
  font-size: 1.12rem;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ns-document-links {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.45rem;
}

.ns-link-button,
.ns-control,
.ns-slide-action,
.ns-icon-button {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid #b9b9b5;
  border-radius: 5px;
  background: var(--ns-paper);
  color: var(--ns-ink);
  font-family: var(--ns-mono);
  font-size: 0.78rem;
  font-weight: 650;
  line-height: 1.15;
  text-decoration: none;
}

.ns-link-button,
.ns-control,
.ns-slide-action {
  padding: 0.6rem 0.82rem;
}

.ns-link-button:hover,
.ns-control:hover:not(:disabled),
.ns-slide-action:hover,
.ns-icon-button:hover {
  border-color: var(--ns-maroon);
  background: #fff8fa;
  color: var(--ns-maroon-dark);
}

.ns-presentation {
  display: grid;
  min-height: 0;
  grid-template-rows: auto minmax(0, 1fr) auto;
}

.ns-progress-row {
  display: flex;
  min-height: 34px;
  align-items: center;
  gap: 0.75rem;
  padding: 0.32rem clamp(0.75rem, 2vw, 1.5rem);
  border-bottom: 1px solid #cecdc9;
  background: #f4f2ee;
  color: var(--ns-muted);
  font-family: var(--ns-mono);
  font-size: 0.72rem;
}

.ns-progress-row progress {
  width: min(360px, 45vw);
  height: 7px;
  overflow: hidden;
  border: 0;
  border-radius: 99px;
  background: #d4d2ce;
  color: var(--ns-maroon);
}

.ns-progress-row progress::-webkit-progress-bar {
  border-radius: 99px;
  background: #d4d2ce;
}

.ns-progress-row progress::-webkit-progress-value {
  border-radius: 99px;
  background: var(--ns-maroon);
}

.ns-progress-row progress::-moz-progress-bar {
  border-radius: 99px;
  background: var(--ns-maroon);
}

.ns-stage-area {
  display: grid;
  min-height: 0;
  place-items: center;
  overflow: auto;
  padding: clamp(0.55rem, 1.5vw, 1.15rem);
  background:
    radial-gradient(circle at 20% 5%, rgb(255 255 255 / 55%), transparent 34%),
    var(--ns-shell);
  overscroll-behavior: contain;
}

.ns-stage {
  position: relative;
  container-type: inline-size;
  width: auto;
  height: min(calc(100dvh - 12.2rem), calc((100vw - 2rem) * 9 / 16), 900px);
  max-width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid #c9c6c1;
  background: var(--ns-paper);
  box-shadow: 0 16px 45px rgb(26 30 32 / 18%);
}

.ns-slide-surface {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
}

.ns-stage[data-view="whiteboard"] .ns-slide-surface {
  visibility: hidden;
}

.ns-whiteboard-label {
  position: absolute;
  z-index: 2;
  top: 1.1rem;
  left: 1.25rem;
  margin: 0;
  color: var(--ns-muted);
  font-family: var(--ns-mono);
  font-size: clamp(0.78rem, 1.4cqw, 1rem);
  font-weight: 650;
  letter-spacing: 0.04em;
  pointer-events: none;
}

.ns-annotation-canvas {
  position: absolute;
  z-index: 3;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.ns-stage.is-drawing .ns-annotation-canvas,
.ns-stage.is-erasing .ns-annotation-canvas {
  pointer-events: auto;
  touch-action: none;
}

.ns-stage.is-drawing .ns-annotation-canvas { cursor: crosshair; }
.ns-stage.is-erasing .ns-annotation-canvas { cursor: cell; }

.ns-slide {
  position: relative;
  display: flex;
  width: 100%;
  height: 100%;
  flex-direction: column;
  overflow: hidden;
  padding: 3.1cqw 4.4cqw 3.2cqw;
  background: var(--ns-paper);
  color: var(--ns-ink);
  font-family: var(--ns-sans);
  font-size: clamp(13px, 1.72cqw, 28px);
  line-height: 1.38;
  animation: ns-slide-enter 140ms linear both;
}

@keyframes ns-slide-enter {
  from { opacity: 0.72; }
  to { opacity: 1; }
}

.ns-slide-header {
  flex: 0 0 auto;
  margin-bottom: 0.9em;
  padding-bottom: 0.6em;
  border-bottom: 0.13em solid var(--ns-orange);
}

.ns-slide-header h1 {
  margin: 0;
  color: var(--ns-maroon);
  font-family: var(--ns-serif);
  font-size: 2.05em;
  font-weight: 720;
  letter-spacing: -0.025em;
  line-height: 1.03;
}

.ns-eyebrow {
  margin: 0 0 0.35em;
  color: #9a4c16;
  font-family: var(--ns-mono);
  font-size: 0.56em;
  font-weight: 760;
  letter-spacing: 0.17em;
  line-height: 1.2;
  text-transform: uppercase;
}

.ns-slide-body {
  display: flex;
  min-height: 0;
  flex: 1 1 auto;
  flex-direction: column;
  justify-content: flex-start;
}

.ns-slide-body > :first-child {
  margin-top: 0;
}

.ns-slide-body > :last-child {
  margin-bottom: 0;
}

.ns-slide mjx-container,
.ns-dialog mjx-container,
.ns-print-slide mjx-container {
  color: inherit;
  max-width: 100%;
}

.ns-math-display mjx-container[display="true"],
.ns-slide mjx-container[display="true"] {
  margin: 0.35em 0;
}

.ns-math,
.ns-math-display {
  font-family: inherit;
}

.ns-slide h2,
.ns-slide h3,
.ns-slide h4 {
  margin: 0 0 0.38em;
  color: var(--ns-ink);
  font-family: var(--ns-serif);
  line-height: 1.12;
}

.ns-slide h2 { font-size: 1.45em; }
.ns-slide h3 { font-size: 1.08em; }
.ns-slide h4 { font-size: 0.95em; }

.ns-slide p {
  margin: 0 0 0.72em;
  color: var(--ns-ink-soft);
}

.ns-slide strong {
  color: var(--ns-ink);
  font-weight: 760;
}

.ns-slide ul,
.ns-slide ol {
  margin: 0.2em 0 0.7em;
  padding-left: 1.35em;
}

.ns-slide li {
  margin: 0.27em 0;
  padding-left: 0.15em;
}

.ns-slide li::marker {
  color: var(--ns-maroon);
  font-weight: 750;
}

.ns-slide blockquote {
  margin: 0.6em 0;
  padding: 0.5em 0 0.5em 0.85em;
  border-left: 0.2em solid var(--ns-orange);
  color: var(--ns-ink-soft);
}

.ns-slide code,
.ns-slide kbd {
  font-family: var(--ns-mono);
}

.ns-slide kbd,
.ns-dialog kbd {
  display: inline-block;
  min-width: 1.7em;
  padding: 0.1em 0.35em;
  border: 1px solid #b9b9b5;
  border-bottom-width: 2px;
  border-radius: 3px;
  background: white;
  font-family: var(--ns-mono);
  font-size: 0.82em;
  text-align: center;
}

.ns-title-shortcuts {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.28em 0.58em;
  margin-top: 0.72em;
  color: var(--ns-ink-soft);
  font-family: var(--ns-mono);
  font-size: 0.56em;
  line-height: 1.45;
}

.ns-title-shortcuts > span {
  white-space: nowrap;
}

.ns-title-handout {
  max-width: 64em;
  margin: 0.7em 0 0 !important;
  padding-top: 0.58em;
  border-top: 1px solid var(--ns-rule);
  color: var(--ns-muted) !important;
  font-size: 0.57em;
  line-height: 1.42;
}

.ns-slide table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86em;
}

.ns-slide th,
.ns-slide td {
  padding: 0.45em 0.6em;
  border-bottom: 1px solid var(--ns-rule);
  text-align: left;
  vertical-align: top;
}

.ns-slide th {
  color: var(--ns-maroon-dark);
  font-weight: 760;
}

.ns-slide svg,
.ns-slide img {
  display: block;
  max-width: 100%;
  max-height: 100%;
}

/* Reusable authoring primitives. */
.ns-stack {
  display: flex;
  flex-direction: column;
  gap: 0.7em;
}

.ns-cluster {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55em;
}

.ns-grid {
  display: grid;
  min-height: 0;
  gap: 0.75em;
}

.ns-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ns-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.ns-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.ns-text-visual { grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr); }

.ns-card,
.ns-panel,
.ns-callout {
  padding: 0.72em 0.85em;
  border: 1px solid var(--ns-rule);
  border-radius: 0.42em;
  background: #fff;
}

.ns-card > :first-child,
.ns-panel > :first-child,
.ns-callout > :first-child { margin-top: 0; }
.ns-card > :last-child,
.ns-panel > :last-child,
.ns-callout > :last-child { margin-bottom: 0; }

.ns-callout {
  border-left: 0.28em solid var(--ns-orange);
  background: #fff9f3;
}

.ns-callout[data-tone="maroon"] {
  border-left-color: var(--ns-maroon);
  background: #fff7fa;
}

.ns-callout[data-tone="green"] {
  border-left-color: var(--ns-green);
  background: #f3fbf5;
}

.ns-lead {
  max-width: 38em;
  font-family: var(--ns-serif);
  font-size: 1.28em;
  line-height: 1.32;
}

.ns-big-number {
  color: var(--ns-maroon);
  font-family: var(--ns-serif);
  font-size: 3.4em;
  font-variant-numeric: tabular-nums;
  font-weight: 760;
  line-height: 0.95;
}

.ns-equation {
  margin: auto 0;
  color: var(--ns-ink);
  font-family: var(--ns-serif);
  font-size: 1.55em;
  line-height: 1.45;
  text-align: center;
}

.ns-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.28em 0.65em;
  border-radius: 99px;
  background: #f4e4ea;
  color: var(--ns-maroon-dark);
  font-family: var(--ns-mono);
  font-size: 0.68em;
  font-weight: 720;
  letter-spacing: 0.02em;
}

.ns-accent { color: var(--ns-maroon) !important; }
.ns-orange { color: #b8500a !important; }
.ns-green { color: var(--ns-green) !important; }
.ns-muted { color: var(--ns-muted) !important; }
.ns-center { text-align: center; }
.ns-center-items { align-items: center; justify-content: center; }
.ns-fill { flex: 1 1 auto; min-height: 0; }

[data-reveal],
[data-fragment] {
  transition: opacity 180ms ease;
}

.ns-slide-surface [data-native-reveal-step].ns-concealed {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  user-select: none;
  animation: none;
}

.ns-revealed {
  animation: ns-reveal 180ms ease-out both;
}

@keyframes ns-reveal {
  from { opacity: 0; }
  to { opacity: 1; }
}

.ns-slide-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 0.45em;
  margin-top: 0.65em;
}

.ns-slide-action {
  min-height: 44px;
  padding: 0.48em 0.85em;
  border: 0;
  background: var(--ns-maroon);
  color: white;
  font-size: 0.6em;
}

.ns-slide-action:hover {
  background: var(--ns-maroon-dark);
  color: white;
}

.ns-controls {
  display: flex;
  min-height: 60px;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem max(0.65rem, env(safe-area-inset-right)) 0.45rem max(0.65rem, env(safe-area-inset-left));
  border-top: 1px solid #c9c7c2;
  background: #f7f5f1;
}

.ns-control-spacer {
  flex: 1 1 auto;
}

.ns-tool-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.ns-control[aria-pressed="true"] {
  border-color: var(--ns-maroon);
  background: #f3dce4;
  color: var(--ns-maroon-dark);
  box-shadow: inset 0 0 0 1px var(--ns-maroon);
}

.ns-control-primary {
  border-color: var(--ns-maroon);
  background: var(--ns-maroon);
  color: white;
}

.ns-control-primary:hover:not(:disabled) {
  border-color: var(--ns-maroon-dark);
  background: var(--ns-maroon-dark);
  color: white;
}

.ns-status {
  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;
}

.ns-visually-hidden {
  position: fixed !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;
}

.ns-laser {
  position: fixed;
  z-index: 1200;
  width: 20px;
  height: 20px;
  transform: translate(-50%, -50%);
  border: 2px solid rgb(255 255 255 / 90%);
  border-radius: 50%;
  background: radial-gradient(circle, #fff 0 8%, #ff2f20 20% 58%, #c90808 70% 100%);
  box-shadow: 0 0 5px 2px rgb(255 35 25 / 78%), 0 0 20px 7px rgb(255 35 25 / 38%);
  pointer-events: none;
}

.native-deck.is-laser-active .ns-stage,
.native-deck.is-laser-active .ns-stage * {
  cursor: none !important;
}

.ns-dialog {
  width: min(960px, calc(100vw - 2rem));
  max-width: none;
  max-height: min(88dvh, 900px);
  padding: 0;
  overflow: hidden;
  border: 1px solid #aaa9a5;
  border-radius: 8px;
  background: var(--ns-paper);
  color: var(--ns-ink);
  box-shadow: 0 28px 80px rgb(20 24 29 / 38%);
}

.ns-dialog::backdrop {
  background: rgb(19 24 27 / 62%);
  backdrop-filter: blur(2px);
}

.ns-dialog-frame {
  display: grid;
  max-height: min(88dvh, 900px);
  grid-template-rows: auto minmax(0, 1fr) auto;
}

.ns-dialog-header,
.ns-dialog-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--ns-rule);
  background: var(--ns-soft);
}

.ns-dialog-header h2 {
  margin: 0;
  color: var(--ns-maroon);
  font-family: var(--ns-serif);
  font-size: clamp(1.45rem, 3vw, 2.15rem);
  line-height: 1.1;
}

.ns-dialog-footer {
  justify-content: flex-end;
  border-top: 1px solid var(--ns-rule);
  border-bottom: 0;
}

.ns-icon-button {
  flex: 0 0 44px;
  padding: 0;
  font-size: 1.5rem;
}

.ns-dialog-body {
  overflow: auto;
  overflow-anchor: none;
  padding: clamp(1rem, 3vw, 1.6rem);
  overscroll-behavior: contain;
}

.ns-dialog-body > :first-child { margin-top: 0; }
.ns-dialog-body > :last-child { margin-bottom: 0; }

.ns-explore-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.ns-explore-card {
  align-self: start;
  border: 1px solid var(--ns-rule);
  border-radius: 5px;
  background: white;
}

.ns-explore-card summary {
  min-height: 48px;
  padding: 0.75rem 0.9rem;
  color: var(--ns-maroon-dark);
  font-weight: 750;
}

.ns-explore-card[open] summary {
  border-bottom: 1px solid var(--ns-rule);
  background: #fff7fa;
}

.ns-explore-content {
  padding: 0.8rem 0.9rem;
}

.ns-explore-content h3 {
  margin: 0.85rem 0 0.12rem;
  color: var(--ns-ink);
  font-family: var(--ns-serif);
  font-size: 1rem;
}

.ns-explore-content h3:first-child { margin-top: 0; }
.ns-explore-content p { margin: 0; color: var(--ns-ink-soft); }

.ns-checkpoint fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

.ns-checkpoint legend {
  width: 100%;
  margin-bottom: 1rem;
  color: var(--ns-ink);
  font-family: var(--ns-serif);
  font-size: 1.35rem;
  font-weight: 680;
  line-height: 1.28;
}

.ns-choice {
  display: grid;
  min-height: 52px;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.7rem;
  margin: 0.55rem 0;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--ns-rule);
  border-radius: 5px;
  background: white;
}

.ns-choice:hover {
  border-color: var(--ns-blue);
  background: #f6fbff;
}

.ns-choice:has(input:checked) {
  border-color: var(--ns-maroon);
  background: #fff7fa;
  box-shadow: 0 0 0 1px var(--ns-maroon);
}

.ns-choice[data-correct="true"] {
  border-color: var(--ns-green);
  background: #effaf2;
  box-shadow: none;
}

.ns-choice[data-incorrect="true"] {
  border-color: var(--ns-danger);
  background: #fff3f1;
  box-shadow: none;
}

.ns-choice input {
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--ns-maroon);
}

.ns-checkpoint > .ns-control {
  margin-top: 0.5rem;
}

.ns-checkpoint-result {
  margin-top: 0.9rem;
  padding: 0.8rem 0.9rem;
  border-radius: 5px;
}

.ns-checkpoint-result:empty { display: none; }
.ns-checkpoint-result[data-result="correct"] { background: #effaf2; color: #195b33; }
.ns-checkpoint-result[data-result="incorrect"] { background: #fff4ed; color: #7d341e; }
.ns-checkpoint-result[data-result="missing"] { background: #fff8db; color: #68520b; }
.ns-checkpoint-result p { margin: 0.35rem 0 0; color: inherit; }

/* Checkpoints are projected teaching surfaces, not compact utility dialogs.
   Keep this scoped to checkpoint content so Explore, help, slide-menu, and
   annotation dialogs retain their own density. Long checkpoints scroll in the
   existing dialog body; they do not shrink to fit. */
.ns-dialog .ns-checkpoint {
  font-size: clamp(1.25rem, 2vw, 1.625rem);
  line-height: 1.35;
}

.ns-dialog .ns-checkpoint legend {
  margin-bottom: 0.75rem;
  font-size: clamp(1.75rem, 2.7vw, 2.25rem);
  line-height: 1.22;
}

.ns-dialog .ns-checkpoint .ns-choice {
  min-height: 64px;
  gap: 0.7rem;
  margin: 0.45rem 0;
  padding: 0.65rem 0.8rem;
}

.ns-dialog .ns-checkpoint .ns-choice input {
  width: 1.4rem;
  height: 1.4rem;
}

.ns-dialog .ns-checkpoint > .ns-control,
.ns-dialog:has(.ns-checkpoint) .ns-dialog-footer .ns-control {
  min-height: 48px;
  font-size: clamp(1.25rem, 2vw, 1.625rem);
}

.ns-dialog .ns-checkpoint-result {
  font-size: 1em;
  line-height: 1.4;
}

/* The general form-control reset is more specific than `.ns-icon-button`.
   Restore the intended × size only for checkpoint headers. */
.ns-dialog:has(.ns-checkpoint) .ns-dialog-header .ns-icon-button {
  font-size: 1.5rem;
}

.ns-shortcuts {
  display: grid;
  gap: 0;
  margin: 0;
}

.ns-shortcuts div {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) 2fr;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--ns-rule);
}

.ns-shortcuts dt { font-weight: 750; }
.ns-shortcuts dd { margin: 0; }

.ns-slide-menu {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ns-slide-menu-button {
  display: grid;
  width: 100%;
  min-height: 48px;
  grid-template-columns: 2.8rem minmax(0, 1fr);
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--ns-rule);
  border-radius: 5px;
  background: white;
  color: var(--ns-ink);
  text-align: left;
}

.ns-slide-menu-button:hover {
  border-color: var(--ns-maroon);
  background: #fff7fa;
}

.ns-slide-menu-button[aria-current="page"] {
  border-color: var(--ns-maroon);
  background: #f4e4ea;
  box-shadow: inset 0 0 0 1px var(--ns-maroon);
}

.ns-slide-menu-number {
  color: var(--ns-maroon);
  font-family: var(--ns-mono);
  font-size: 0.76rem;
  font-weight: 750;
}

.ns-ink-backup-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.ns-handout-toolbar {
  position: fixed;
  z-index: 1100;
  top: max(0.65rem, env(safe-area-inset-top));
  right: max(0.65rem, env(safe-area-inset-right));
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem;
  border: 1px solid #b9b9b5;
  border-radius: 7px;
  background: rgb(255 254 252 / 96%);
  box-shadow: 0 8px 28px rgb(20 24 29 / 20%);
}

.native-deck.is-handout {
  display: block;
  min-height: 100dvh;
  overflow: visible;
  padding: clamp(4.5rem, 8vw, 5.5rem) clamp(0.55rem, 2vw, 1.25rem) 2rem;
  background: var(--ns-shell);
}

.native-deck.is-handout > :not(.ns-print-deck):not(.ns-handout-toolbar):not(.ns-status) {
  display: none !important;
}

.native-deck.is-handout .ns-print-deck {
  position: static;
  display: grid;
  width: 100%;
  gap: clamp(1rem, 3vw, 2rem);
  visibility: visible;
  pointer-events: auto;
  contain: none;
}

.native-deck.is-handout .ns-print-slide {
  container-type: inline-size;
  width: min(1280px, 100%);
  height: auto;
  min-height: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  margin-inline: auto;
  padding: 3.1cqw 4.4cqw 3.2cqw;
  border: 1px solid #c9c6c1;
  background: var(--ns-paper);
  box-shadow: 0 12px 34px rgb(26 30 32 / 16%);
  font-size: clamp(13px, 1.72cqw, 28px);
}

.ns-print-deck {
  /* Keep the prebuilt print deck measurable so MathJax can compute line
     breaks at the physical 16:9 page width. `display:none` gives the math
     renderer a zero-width container and can produce bad print wrapping. */
  position: fixed;
  top: 0;
  left: -20000px;
  width: 1280px;
  visibility: hidden;
  pointer-events: none;
  contain: layout style paint;
}

.ns-print-deck .ns-print-slide {
  container-type: inline-size;
  width: 1280px;
  height: 719px;
  padding: 40px 56px 43px;
  font-size: 28px;
}

.ns-print-static-control {
  cursor: default;
}

.ns-print-static-control[role="gridcell"] {
  display: grid;
  place-items: center;
}

.ns-print-annotation {
  position: absolute !important;
  z-index: 20;
  inset: 0;
  display: block !important;
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  max-height: none !important;
  margin: 0 !important;
  pointer-events: none;
}

.native-deck:fullscreen,
.native-deck:-webkit-full-screen {
  width: 100vw;
  height: 100dvh;
  min-height: 100dvh;
}

.native-deck:fullscreen .ns-stage,
.native-deck:-webkit-full-screen .ns-stage {
  height: min(calc(100dvh - 12.2rem), calc((100vw - 2rem) * 9 / 16));
}

@media (max-width: 1050px) {
  .ns-controls {
    flex-wrap: wrap;
  }

  .ns-control-spacer {
    display: none;
  }
}

@media (max-width: 760px) {
  .native-deck {
    min-height: 100dvh;
    padding-bottom: calc(62px + env(safe-area-inset-bottom));
    overflow: auto;
  }

  .ns-masthead {
    align-items: stretch;
    flex-direction: column;
    gap: 0.4rem;
  }

  .ns-identity {
    display: block;
  }

  .ns-course {
    display: block;
  }

  .ns-identity strong {
    display: block;
    margin-top: 0.15rem;
    font-size: 1rem;
    white-space: normal;
  }

  .ns-document-links {
    width: 100%;
  }

  .ns-link-button {
    flex: 1 1 50%;
  }

  .ns-presentation {
    min-height: 0;
  }

  .ns-progress-row progress {
    flex: 1 1 auto;
    width: auto;
  }

  .ns-stage-area {
    display: block;
    overflow: visible;
    padding: 0;
    background: var(--ns-paper);
  }

  .ns-stage,
  .native-deck:fullscreen .ns-stage,
  .native-deck:-webkit-full-screen .ns-stage {
    width: 100%;
    height: auto;
    min-height: calc(100dvh - 15rem);
    max-height: none;
    aspect-ratio: auto;
    overflow: visible;
    border: 0;
    box-shadow: none;
  }

  .ns-slide {
    min-height: calc(100dvh - 15rem);
    height: auto;
    overflow: visible;
    padding: 1.4rem 1.1rem 1.7rem;
    font-size: clamp(17px, 4.5vw, 21px);
  }

  .ns-slide-header h1 {
    font-size: 1.72em;
  }

  .ns-grid-2,
  .ns-grid-3,
  .ns-grid-4,
  .ns-text-visual {
    grid-template-columns: 1fr;
  }

  .ns-controls {
    position: sticky;
    z-index: 4;
    bottom: calc(58px + env(safe-area-inset-bottom));
    flex-wrap: wrap;
    padding-bottom: max(0.45rem, env(safe-area-inset-bottom));
  }

  .ns-control-spacer { display: none; }
  .ns-controls .ns-control { flex: 1 1 auto; }

  .ns-tool-group {
    position: fixed;
    z-index: 30;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    min-height: 58px;
    padding: 0.4rem max(0.45rem, env(safe-area-inset-right))
      max(0.4rem, env(safe-area-inset-bottom))
      max(0.45rem, env(safe-area-inset-left));
    border-top: 1px solid #c9c7c2;
    background: rgb(247 245 241 / 98%);
    box-shadow: 0 -5px 18px rgb(20 24 29 / 12%);
    overflow-x: auto;
  }

  .ns-tool-group .ns-control {
    flex: 1 0 auto;
  }

  .ns-explore-grid { grid-template-columns: 1fr; }

  .ns-shortcuts div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .ns-slide-menu { grid-template-columns: 1fr; }

  .ns-handout-toolbar {
    right: max(0.35rem, env(safe-area-inset-right));
    left: max(0.35rem, env(safe-area-inset-left));
    justify-content: stretch;
  }

  .ns-handout-toolbar .ns-control { flex: 1 1 50%; }

  .native-deck.is-handout {
    padding: calc(4.8rem + env(safe-area-inset-top)) 0.35rem 1rem;
  }

  .native-deck.is-handout .ns-print-slide {
    width: 100%;
    min-height: 0;
    padding: 3.1cqw 4.4cqw 3.2cqw;
    font-size: clamp(8px, 1.72cqw, 28px);
  }
}

@media (max-width: 440px) {
  .ns-controls [data-action-shell="print"],
  .ns-controls [data-action-shell="help"] {
    display: none;
  }

  .ns-stage[data-view="whiteboard"] {
    min-height: 60dvh;
  }
}

@media (prefers-reduced-motion: reduce) {
  .native-deck *,
  .native-deck *::before,
  .native-deck *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  @page {
    size: 13.333333in 7.5in;
    margin: 0;
  }

  html,
  body {
    margin: 0 !important;
    padding: 0 !important;
    background: white !important;
  }

  body.native-slide-page > .skip-link {
    display: none !important;
  }

  .native-deck {
    display: contents !important;
    min-height: 0 !important;
    overflow: visible !important;
    background: white !important;
  }

  .native-deck > :not(.ns-print-deck) {
    display: none !important;
  }

  .native-deck .ns-print-deck {
    display: contents !important;
    position: static !important;
    width: auto !important;
    visibility: visible !important;
    contain: none !important;
  }

  .native-deck .ns-print-slide {
    container-type: inline-size;
    position: relative;
    display: flex;
    width: 13.333333in;
    /* Keep the content box one device pixel below the physical page height.
       Chromium otherwise rounds 41 exact-height boxes into a blank tail page. */
    height: calc(7.5in - 1px);
    break-inside: avoid;
    page-break-inside: avoid;
    overflow: hidden;
    padding: 0.42in 0.58in 0.45in;
    border: 0;
    box-shadow: none;
    font-size: 21pt;
    animation: none;
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }

  .native-deck .ns-print-slide:not(:last-child) {
    break-after: page;
    page-break-after: always;
  }

  .native-deck .ns-print-number {
    position: absolute;
    z-index: 21;
    right: 0.48in;
    bottom: 0.22in;
    color: var(--ns-muted);
    font-family: var(--ns-mono);
    font-size: 9pt;
  }
}