/*
 * Arc Nova Live — deck kit styles.
 *
 * Two layouts share one markup:
 * - Reader (default, also without JavaScript): slides stacked as cards, fluid type, for phones.
 * - Presenter (html.deck-presenter, set by deck.js): one 1600x900 slide at a time, scaled to fit.
 * Print always uses the 1600x900 slide layout, one slide per page.
 */
@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600&family=Space+Grotesk:wght@500;600;700&display=swap");

:root {
  --an-bg: #0a0a0f;
  --an-surface: #1a1a2e;
  --an-surface-2: #2a2a3e;
  --an-border: rgba(255, 255, 255, 0.1);
  --an-text: #f4f4f8;
  --an-muted: #a6a6bd;
  --an-magenta: #ff006e;
  --an-purple: #8338ec;
  --an-cyan: #06ffa5;
  --an-gradient: linear-gradient(100deg, var(--an-magenta), var(--an-purple));
  --an-font-head: "Space Grotesk", system-ui, sans-serif;
  --an-font-body: "Montserrat", system-ui, sans-serif;
  --an-font-mono: ui-monospace, "SFMono-Regular", "Cascadia Code", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--an-bg);
  color: var(--an-text);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--an-bg);
  color: var(--an-text);
  font-family: var(--an-font-body);
  line-height: 1.5;
}

/* ---------- Type scale per layout ---------- */

.deck {
  --fs-display: clamp(2.1rem, 8vw, 3.2rem);
  --fs-h2: clamp(1.45rem, 5.5vw, 2.1rem);
  --fs-h3: 1.2rem;
  --fs-body: 1.05rem;
  --fs-small: 0.88rem;
  --fs-code: 0.86rem;
  --slide-pad: 28px 22px;
  --gap: 18px;
  --radius: 14px;
}

.deck-presenter .deck {
  --fs-display: 112px;
  --fs-h2: 66px;
  --fs-h3: 42px;
  --fs-body: 36px;
  --fs-small: 26px;
  --fs-code: 27px;
  --slide-pad: 88px 120px;
  --gap: 40px;
  --radius: 24px;
}

/* ---------- Reader layout (default) ---------- */

.deck {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 880px;
  margin: 0 auto;
  padding: 76px 12px 48px;
}

.slide {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--gap);
  padding: var(--slide-pad);
  border: 1px solid var(--an-border);
  border-radius: 18px;
  background:
    radial-gradient(60% 70% at 100% 0%, rgba(131, 56, 236, 0.18), transparent 70%),
    radial-gradient(50% 60% at 0% 100%, rgba(255, 0, 110, 0.1), transparent 70%), var(--an-surface);
  overflow: hidden;
  scroll-margin-top: 72px;
  font-size: var(--fs-body);
}

/* ---------- Presenter layout ---------- */

.deck-presenter,
.deck-presenter body {
  height: 100%;
  overflow: hidden;
}

.deck-presenter .deck {
  position: fixed;
  inset: 0;
  max-width: none;
  margin: 0;
  padding: 0;
  display: block;
}

.deck-presenter .slide {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1600px;
  height: 900px;
  border: 0;
  border-radius: 0;
  transform: translate(-50%, -50%) scale(var(--deck-scale, 0.5));
  transform-origin: center;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.25s ease,
    visibility 0.25s;
}

.deck-presenter .slide.is-active {
  opacity: 1;
  visibility: visible;
}

/* ---------- Content elements ---------- */

.slide h1,
.slide h2,
.slide h3 {
  margin: 0;
  font-family: var(--an-font-head);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.slide h1 {
  font-size: var(--fs-display);
}

.slide h2 {
  font-size: var(--fs-h2);
}

.slide h3 {
  font-size: var(--fs-h3);
  font-weight: 600;
}

.slide p,
.slide ul,
.slide ol,
.slide figure,
.slide blockquote,
.slide pre,
.slide table {
  margin: 0;
}

.slide ul,
.slide ol {
  padding-left: 1.2em;
  display: flex;
  flex-direction: column;
  gap: 0.45em;
}

.slide li::marker {
  color: var(--an-magenta);
}

.slide ol li::marker {
  font-family: var(--an-font-head);
  font-weight: 700;
}

.slide strong {
  color: #fff;
  font-weight: 600;
}

.slide a {
  color: var(--an-cyan);
  text-underline-offset: 0.15em;
}

.slide code {
  font-family: var(--an-font-mono);
  font-size: 0.88em;
  padding: 0.08em 0.35em;
  border-radius: 0.3em;
  background: rgba(255, 255, 255, 0.08);
}

.slide img,
.slide video {
  display: block;
  max-width: 100%;
  border-radius: calc(var(--radius) * 0.6);
}

.slide table {
  border-collapse: collapse;
  font-size: var(--fs-small);
  width: 100%;
}

.slide th,
.slide td {
  text-align: left;
  padding: 0.5em 0.8em;
  border-bottom: 1px solid var(--an-border);
}

.slide th {
  font-family: var(--an-font-head);
  color: var(--an-muted);
  font-weight: 600;
}

/* Prompt and code blocks. deck.js wraps pre.prompt in .prompt-card with a Copy button. */
.slide pre {
  font-family: var(--an-font-mono);
  font-size: var(--fs-code);
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  padding: 0.9em 1.1em;
  border-radius: var(--radius);
  border: 1px solid var(--an-border);
  background: rgba(10, 10, 15, 0.7);
}

.slide pre.prompt {
  border-left: 4px solid var(--an-cyan);
}

.prompt-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  border: 1px solid var(--an-border);
  border-left: 4px solid var(--an-cyan);
  background: rgba(10, 10, 15, 0.7);
  overflow: hidden;
}

.prompt-card pre.prompt {
  border: 0;
  border-radius: 0;
  background: none;
  padding-top: 0.2em;
}

.prompt-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1em;
  padding: 0.55em 0.7em 0.35em 1.1em;
  font-family: var(--an-font-head);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--an-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.copy-btn {
  font: inherit;
  font-size: 0.85em;
  text-transform: none;
  letter-spacing: 0;
  color: var(--an-text);
  background: var(--an-surface-2);
  border: 1px solid var(--an-border);
  border-radius: 999px;
  padding: 0.3em 0.9em;
  cursor: pointer;
}

.copy-btn:hover {
  border-color: var(--an-cyan);
}

.copy-btn.is-copied {
  color: var(--an-bg);
  background: var(--an-cyan);
  border-color: var(--an-cyan);
}

/* ---------- Utilities ---------- */

.kicker {
  font-family: var(--an-font-head);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--an-cyan);
}

.lead {
  font-size: 1.15em;
  color: var(--an-muted);
  max-width: 34em;
}

.muted {
  color: var(--an-muted);
}

.small {
  font-size: var(--fs-small);
}

.accent {
  background: var(--an-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.badge {
  align-self: flex-start;
  font-family: var(--an-font-head);
  font-size: var(--fs-small);
  font-weight: 600;
  padding: 0.25em 0.8em;
  border-radius: 999px;
  color: var(--an-bg);
  background: var(--an-cyan);
}

.cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--gap) * 0.6);
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.4em;
  padding: 0.9em 1em;
  border-radius: var(--radius);
  border: 1px solid var(--an-border);
  background: rgba(255, 255, 255, 0.04);
}

.card h3 {
  font-size: calc(var(--fs-body) * 1.1);
}

.card p {
  font-size: var(--fs-small);
  color: var(--an-muted);
}

.deck-presenter .card p {
  font-size: calc(var(--fs-body) * 0.85);
}

@media (min-width: 640px) {
  .cards {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
}

.deck-presenter .cols {
  grid-template-columns: 1fr 1fr;
  align-items: start;
}

.deck-presenter .cards {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* ---------- Slide layouts ---------- */

.slide.title,
.slide.section,
.slide.center {
  align-items: flex-start;
}

.slide.title {
  background:
    radial-gradient(70% 90% at 100% 0%, rgba(131, 56, 236, 0.4), transparent 65%),
    radial-gradient(60% 80% at 0% 100%, rgba(255, 0, 110, 0.28), transparent 65%), var(--an-bg);
}

.slide.title .subtitle {
  font-size: calc(var(--fs-body) * 1.25);
  color: var(--an-muted);
  max-width: 28em;
}

.slide.title .meta {
  font-size: var(--fs-small);
  color: var(--an-muted);
  border-top: 1px solid var(--an-border);
  padding-top: 1em;
}

.slide.section {
  background:
    radial-gradient(80% 120% at 0% 50%, rgba(255, 0, 110, 0.3), transparent 60%), var(--an-bg);
}

.slide.section h2 {
  font-size: calc(var(--fs-h2) * 1.35);
}

.slide.section .kicker {
  font-size: calc(var(--fs-small) * 1.2);
}

.slide.content,
.slide.two-col,
.slide.exercise {
  justify-content: flex-start;
}

.slide.image figure {
  display: flex;
  flex-direction: column;
  gap: 0.5em;
  min-height: 0;
  flex: 1;
}

.deck-presenter .slide.image figure img {
  flex: 1;
  min-height: 0;
  width: 100%;
  object-fit: contain;
}

.slide.image figcaption {
  font-size: var(--fs-small);
  color: var(--an-muted);
}

.slide.quote blockquote {
  font-family: var(--an-font-head);
  font-size: calc(var(--fs-h2) * 0.85);
  font-weight: 500;
  line-height: 1.25;
  padding-left: 0.8em;
  border-left: 6px solid var(--an-magenta);
}

.slide.quote cite {
  font-style: normal;
  color: var(--an-muted);
  font-size: var(--fs-small);
}

.slide.exercise {
  border-color: rgba(6, 255, 165, 0.35);
  background:
    radial-gradient(60% 70% at 100% 0%, rgba(6, 255, 165, 0.12), transparent 70%), var(--an-surface);
}

.slide .duration {
  font-family: var(--an-font-head);
  font-size: var(--fs-small);
  color: var(--an-cyan);
}

/* ---------- Deck chrome (built by deck.js) ---------- */

.deck-bar {
  position: fixed;
  z-index: 20;
  left: 0;
  right: 0;
  top: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-family: var(--an-font-head);
  font-size: 14px;
  background: rgba(10, 10, 15, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--an-border);
}

.deck-home {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--an-text);
  text-decoration: none;
  font-weight: 700;
  white-space: nowrap;
}

.deck-home::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--an-gradient);
  box-shadow: 0 0 12px rgba(255, 0, 110, 0.6);
}

.deck-title {
  flex: 1;
  min-width: 0;
  color: var(--an-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.deck-counter {
  color: var(--an-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.deck-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  font: inherit;
  color: var(--an-text);
  background: var(--an-surface);
  border: 1px solid var(--an-border);
  border-radius: 10px;
  cursor: pointer;
}

.deck-btn:hover,
.deck-btn:focus-visible {
  border-color: var(--an-magenta);
  outline: none;
}

.deck-btn svg {
  width: 18px;
  height: 18px;
}

.deck-only-presenter {
  display: none;
}

.deck-progress {
  position: fixed;
  z-index: 21;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  pointer-events: none;
}

.deck-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--an-gradient);
  transition: width 0.25s ease;
}

.deck-presenter .deck-progress {
  top: auto;
  bottom: 0;
}

.deck-presenter .deck-bar {
  top: auto;
  bottom: 14px;
  left: 50%;
  right: auto;
  transform: translateX(-50%);
  border: 1px solid var(--an-border);
  border-radius: 14px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.deck-presenter.deck-pointer .deck-bar,
.deck-presenter .deck-bar:hover,
.deck-presenter .deck-bar:focus-within {
  opacity: 1;
}

.deck-presenter .deck-only-presenter {
  display: inline-flex;
}

.deck-presenter .deck-title {
  max-width: 260px;
}

/* Overview grid */
.deck-overview {
  position: fixed;
  z-index: 30;
  inset: 0;
  overflow-y: auto;
  padding: 32px;
  background: rgba(10, 10, 15, 0.96);
  display: none;
}

.deck-overview-open .deck-overview {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  align-content: start;
  gap: 20px;
}

.deck-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  padding: 0;
  border: 2px solid var(--an-border);
  border-radius: 10px;
  background: var(--an-bg);
  overflow: hidden;
  cursor: pointer;
}

.deck-thumb.is-current,
.deck-thumb:hover,
.deck-thumb:focus-visible {
  border-color: var(--an-magenta);
  outline: none;
}

.deck-thumb-stage {
  position: absolute;
  left: 0;
  top: 0;
  width: 1600px;
  height: 900px;
  transform-origin: 0 0;
  transform: scale(var(--thumb-scale, 0.175));
  pointer-events: none;
}

.deck-thumb-stage .slide {
  --fs-display: 112px;
  --fs-h2: 66px;
  --fs-h3: 42px;
  --fs-body: 36px;
  --fs-small: 26px;
  --fs-code: 27px;
  --slide-pad: 88px 120px;
  --gap: 40px;
  --radius: 24px;
  position: absolute;
  inset: 0;
  border: 0;
  border-radius: 0;
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: none;
}

.deck-thumb-num {
  position: absolute;
  right: 8px;
  bottom: 6px;
  font-family: var(--an-font-head);
  font-size: 13px;
  color: var(--an-muted);
}

/* Blackout (B or . — what most clickers send) */
.deck-blackout-layer {
  position: fixed;
  z-index: 40;
  inset: 0;
  background: #000;
  display: none;
}

.deck-blackout .deck-blackout-layer {
  display: block;
}

/* Help */
.deck-help {
  position: fixed;
  z-index: 35;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(440px, calc(100vw - 32px));
  padding: 24px 28px;
  font-size: 15px;
  border-radius: 16px;
  border: 1px solid var(--an-border);
  background: var(--an-surface);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  display: none;
}

.deck-help-open .deck-help {
  display: block;
}

.deck-help h2 {
  margin: 0 0 12px;
  font-family: var(--an-font-head);
  font-size: 18px;
}

.deck-help dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  margin: 0;
}

.deck-help dt {
  font-family: var(--an-font-mono);
  color: var(--an-cyan);
}

.deck-help dd {
  margin: 0;
  color: var(--an-muted);
}

@media (prefers-reduced-motion: reduce) {
  .deck-presenter .slide,
  .deck-progress span,
  .deck-presenter .deck-bar {
    transition: none;
  }
}

/* ---------- Print: one 16:9 slide per page ---------- */

@page {
  size: 1600px 900px;
  margin: 0;
}

@media print {
  html,
  body {
    height: auto !important;
    overflow: visible !important;
    background: var(--an-bg);
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .deck,
  .deck-presenter .deck {
    --fs-display: 112px;
    --fs-h2: 66px;
    --fs-h3: 42px;
    --fs-body: 36px;
    --fs-small: 26px;
    --fs-code: 27px;
    --slide-pad: 88px 120px;
    --gap: 40px;
    --radius: 24px;
    position: static;
    display: block;
    max-width: none;
    margin: 0;
    padding: 0;
  }

  .slide,
  .deck-presenter .slide {
    position: relative;
    left: auto;
    top: auto;
    width: 1600px;
    height: 900px;
    border: 0;
    border-radius: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
    break-after: page;
    break-inside: avoid;
  }

  .cols {
    grid-template-columns: 1fr 1fr;
  }

  .deck-bar,
  .deck-progress,
  .deck-overview,
  .deck-help,
  .deck-blackout-layer,
  .copy-btn {
    display: none !important;
  }
}