:root {
  --cream: #fdf8ec;
  --ink-2: #1d3857;
  --copper-2: #d79a5b;
  --gold: #f2d8a4;
  --bluewash: #dbe8ee;
  --shadow: 0 26px 90px rgba(7, 18, 32, .34);
  --display: "Noto Sans Thai", "Sarabun", ui-sans-serif, system-ui, sans-serif;
  --body: "Sarabun", ui-sans-serif, system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }
body {
  font-family: var(--body);
  color: var(--ink);
  background: var(--desk);
  background-image: radial-gradient(circle at 80% 8%, rgba(184, 115, 56, .08), transparent 30rem);
}
button, a { font: inherit; }

.stage {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  padding: calc(var(--tabs-h, 56px) + 14px) 22px 72px;
}

.slide {
  --slide-w: min(calc(100vw - 44px), calc((100vh - (96px + var(--tabs-h, 56px))) * 16 / 9));
  --slide-h: min(calc(100vh - (96px + var(--tabs-h, 56px))), calc((100vw - 44px) * 9 / 16));
  width: var(--slide-w);
  height: var(--slide-h);
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  gap: clamp(14px, min(1.9vw, 3.6vh), 38px);
  padding: clamp(22px, min(3vw, 5.3vh), 58px);
  background: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 26px 26px;
  border: 1px solid rgba(16, 36, 59, .35);
  border-radius: 12px;
  box-shadow: 0 18px 40px rgba(16, 36, 59, .15);
  isolation: isolate;
}

.slide-grain { display: none; }

.slide.is-entering {
  animation: slide-bloom .74s cubic-bezier(.18, .82, .2, 1) backwards;
}
.slide.is-entering .deck-mark,
.slide.is-entering .slide-meta,
.slide.is-entering .slide-title,
.slide.is-entering .slide-takeaway,
.slide.is-entering .slide-link {
  animation: copy-rise .62s cubic-bezier(.18, .82, .2, 1) backwards;
}
.slide.is-entering .slide-meta { animation-delay: .04s; }
.slide.is-entering .slide-title { animation-delay: .10s; }
.slide.is-entering .slide-takeaway { animation-delay: .18s; }
.slide.is-entering .slide-link { animation-delay: .32s; }
.slide.is-entering .bullet {
  animation: bullet-rise .52s cubic-bezier(.18, .82, .2, 1) backwards;
}
.slide.is-entering .bullet:nth-child(1) { animation-delay: .24s; }
.slide.is-entering .bullet:nth-child(2) { animation-delay: .31s; }
.slide.is-entering .bullet:nth-child(3) { animation-delay: .38s; }
.slide.is-entering .slide-visual {
  animation: visual-rise .7s cubic-bezier(.18, .82, .2, 1) .13s backwards;
}
.slide.is-entering .visual-caption {
  animation: caption-pop .48s cubic-bezier(.18, .82, .2, 1) .48s backwards;
}
.slide.is-entering .framework-pill {
  animation: pill-rise .42s cubic-bezier(.18, .82, .2, 1) backwards;
}
.slide.is-entering .framework-pill:nth-child(1) { animation-delay: .36s; }
.slide.is-entering .framework-pill:nth-child(2) { animation-delay: .42s; }
.slide.is-entering .framework-pill:nth-child(3) { animation-delay: .48s; }
.slide.is-entering .framework-pill:nth-child(4) { animation-delay: .54s; }
.slide.is-entering .framework-pill:nth-child(5) { animation-delay: .60s; }
.slide.is-entering .framework-pill:nth-child(6) { animation-delay: .66s; }

.deck-mark {
  position: absolute;
  top: clamp(18px, 2vw, 34px);
  left: clamp(24px, 3vw, 54px);
  right: clamp(24px, 3vw, 54px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--display);
  font-size: clamp(9px, .85vw, 14px);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  z-index: 3;
}
.deck-mark strong { color: var(--copper); font-weight: 800; }

.slide-copy,
.slide-visual {
  min-width: 0;
  min-height: 0;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  z-index: 2;
}

.slide-meta {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1vw, 18px);
  margin-bottom: clamp(12px, 1.3vw, 22px);
}
.slide-kicker,
.slide-number {
  font-family: var(--display);
  font-size: clamp(11px, .9vw, 15px);
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.slide-kicker {
  font: 700 12px var(--display);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--copper);
}
.slide-number { color: rgba(16,36,59,.62); }

.slide-title {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(25px, min(3.45vw, 6.4vh), 60px);
  line-height: 1.04;
  letter-spacing: -.032em;
  color: var(--ink);
  text-wrap: balance;
  max-width: 16ch;
}

.slide-takeaway {
  margin: clamp(12px, min(1.6vw, 2.8vh), 28px) 0 0;
  max-width: 36em;
  font-size: clamp(15px, min(1.38vw, 2.9vh), 27px);
  line-height: 1.36;
  border-left: 3px solid var(--copper);
  padding-left: 14px;
  color: #3d4a5c;
  text-wrap: pretty;
}

.slide-bullets {
  margin-top: clamp(12px, min(1.55vw, 2.8vh), 30px);
  display: grid;
  gap: clamp(7px, min(.72vw, 1.5vh), 13px);
  max-width: 36em;
}
.bullet {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .7em;
  align-items: start;
  padding: clamp(6px, min(.64vw, 1.28vh), 11px) clamp(9px, .9vw, 15px);
  border: 1px solid rgba(16,36,59,.12);
  border-radius: clamp(11px, .95vw, 16px);
  background: rgba(255,253,247,.60);
  color: rgba(16,36,59,.84);
  box-shadow: 0 10px 34px rgba(16,36,59,.055);
  font-size: clamp(12px, min(1vw, 2.08vh), 19px);
  line-height: 1.24;
}
.bullet::before {
  content: "☐";
  display: grid;
  place-items: center;
  width: 1.4em;
  color: var(--copper);
  font-size: 1.1em;
  line-height: 1;
}

.slide-link {
  width: max-content;
  max-width: 100%;
  margin-top: clamp(12px, min(1.45vw, 2.5vh), 26px);
  display: inline-flex;
  align-items: center;
  gap: .5em;
  padding: .72em 1.05em;
  border-radius: 999px;
  color: #fffdf7;
  background: linear-gradient(135deg, var(--ink), #244765);
  text-decoration: none;
  font-family: var(--display);
  font-size: clamp(13px, 1vw, 17px);
  font-weight: 700;
  box-shadow: 0 18px 44px rgba(16,36,59,.20);
}
.slide-link:hover { transform: translateY(-1px); }

.slide-visual {
  gap: clamp(10px, min(1.05vw, 2.2vh), 20px);
}
.visual-card {
  position: relative;
  flex: 1;
  min-height: 0;
  display: grid;
  align-items: center;
  padding: clamp(12px, 1.2vw, 22px);
  border-radius: clamp(20px, 2vw, 34px);
  background:
    linear-gradient(145deg, rgba(16,36,59,.06), rgba(255,253,247,.58)),
    rgba(255,253,247,.78);
  border: 1px solid rgba(16,36,59,.13);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.45),
    0 30px 90px rgba(16,36,59,.16);
  overflow: hidden;
  transform: translateZ(0);
  transition: transform .45s ease, box-shadow .45s ease;
}
.visual-card:hover {
  transform: translateY(-3px) scale(1.005);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.52),
    0 36px 105px rgba(16,36,59,.20);
}
.visual-card::before {
  content: "";
  position: absolute;
  inset: 16px;
  border-radius: inherit;
  border: 1px dashed rgba(184,115,56,.32);
  pointer-events: none;
}
.slide-image {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: contrast(1.12) saturate(1.08) drop-shadow(0 20px 35px rgba(16,36,59,.20));
  transform: scale(1.01);
}
.visual-caption {
  position: absolute;
  left: clamp(18px, 1.7vw, 30px);
  right: clamp(18px, 1.7vw, 30px);
  bottom: clamp(16px, 1.5vw, 26px);
  z-index: 2;
  padding: .7em .9em;
  border-radius: 999px;
  background: rgba(16,36,59,.86);
  color: #fffaf0;
  font-family: var(--display);
  font-size: clamp(11px, .9vw, 15px);
  font-weight: 700;
  letter-spacing: .02em;
  backdrop-filter: blur(10px);
}

.framework-strip {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: clamp(6px, .65vw, 12px);
}
.framework-pill {
  min-width: 0;
  padding: .5em .5em;
  border-radius: 999px;
  text-align: center;
  font-family: var(--mono);
  font-size: clamp(9px, .74vw, 12.5px);
  font-weight: 600;
  color: var(--ink);
  background: #fff;
  border: 1.5px solid var(--ink);
  box-shadow: none;
}
.framework-pill.is-hot {
  color: var(--ink);
  background: var(--hl);
  border-color: var(--copper);
}

/* Slide types */
.slide.is-cover {
  grid-template-columns: 1.06fr .94fr;
  background:
    radial-gradient(circle at 62% 30%, rgba(184,115,56,.24), transparent 26%),
    linear-gradient(135deg, #fffdf7 0%, #fbefd9 54%, #e9d1ab 100%);
}
.slide.is-cover .slide-title { max-width: 14ch; font-size: clamp(31px, min(4vw, 7.4vh), 72px); }
.slide.is-cover .slide-takeaway { font-size: clamp(15px, min(1.35vw, 2.8vh), 25px); color: rgba(16,36,59,.78); }
.slide.is-cover .slide-bullets { display: none; }

.slide.is-part {
  grid-template-columns: .78fr 1.22fr;
  background:
    linear-gradient(135deg, rgba(16,36,59,.96), rgba(22,58,84,.94)),
    var(--ink);
  color: #fffaf0;
}
.slide.is-part::before { opacity: .18; filter: invert(1); }
.slide.is-part .deck-mark,
.slide.is-part .slide-number { color: rgba(255,250,240,.54); }
.slide.is-part .deck-mark strong,
.slide.is-part .slide-kicker { color: #f0c486; }
.slide.is-part .slide-kicker { background: rgba(255,255,255,.07); border-color: rgba(240,196,134,.35); }
.slide.is-part .slide-title { color: #fffaf0; max-width: 12ch; }
.slide.is-part .slide-takeaway { color: rgba(255,250,240,.82); }
.slide.is-part .bullet { background: rgba(255,255,255,.07); color: rgba(255,250,240,.88); border-color: rgba(255,255,255,.12); }
.slide.is-part .bullet::before { color: #f0c486; }
.slide.is-part .slide-link { background: rgba(255,250,240,.12); border: 1px solid rgba(255,250,240,.18); }
.slide.is-part .visual-card { background: rgba(255,255,255,.07); border-color: rgba(255,255,255,.12); }
.slide.is-part .framework-pill { background: rgba(255,255,255,.09); color: rgba(255,250,240,.88); border-color: rgba(255,255,255,.12); }

.slide.is-framework .slide-title { max-width: 10.8ch; }
.slide.is-framework .visual-card { min-height: 68%; }
.slide.is-workflow .framework-strip { grid-template-columns: repeat(5, 1fr); }
.slide.is-dense .slide-title { font-size: clamp(22px, min(2.75vw, 5.35vh), 48px); line-height: 1.06; max-width: 17ch; }
.slide.is-dense .slide-takeaway { font-size: clamp(14px, min(1.14vw, 2.55vh), 21px); }
.slide.is-dense .slide-bullets { gap: clamp(6px, min(.6vw, 1.25vh), 11px); }
.slide.is-dense .bullet { padding: clamp(5px, min(.55vw, 1.1vh), 10px) clamp(8px, .82vw, 13px); }

/* Auto-fit classes are added by presentation.js after measuring the rendered slide. */
.slide.fit-1 .slide-link { display: none; }
.slide.fit-1 .slide-title { font-size: clamp(22px, min(2.9vw, 5.55vh), 50px); }
.slide.fit-1 .slide-takeaway { font-size: clamp(14px, min(1.16vw, 2.55vh), 22px); line-height: 1.32; }
.slide.fit-1 .bullet { font-size: clamp(11px, min(.88vw, 1.9vh), 17px); line-height: 1.2; }
.slide.fit-2 .slide-bullets,
.slide.fit-2 .visual-caption { display: none; }
.slide.fit-2 .slide-title { font-size: clamp(21px, min(2.65vw, 5vh), 46px); line-height: 1.04; }
.slide.fit-2 .slide-takeaway { margin-top: clamp(9px, 1.1vw, 18px); }
.slide.fit-3 .framework-strip { display: none; }
.slide.fit-3 .slide-title { font-size: clamp(19px, min(2.35vw, 4.45vh), 40px); }
.slide.fit-3 .slide-takeaway { font-size: clamp(13px, min(1.02vw, 2.25vh), 19px); }

/* Controls */
.controls {
  position: fixed;
  left: 50%;
  bottom: clamp(10px, 1.8vh, 22px);
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: clamp(8px, 1vw, 16px);
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(7,18,32,.78);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 18px 52px rgba(0,0,0,.28);
  backdrop-filter: blur(18px);
  opacity: .34;
  transition: opacity .18s ease, transform .18s ease;
}
.controls:hover, .controls.controls-visible { opacity: 1; }
.controls-left,
.controls-center,
.controls-right { display: flex; align-items: center; gap: 7px; }
.slide-counter {
  min-width: 54px;
  font: 600 19px var(--hand);
  color: var(--copper);
  text-align: center;
}
.mini-progress {
  width: clamp(82px, 10vw, 180px);
  height: 6px;
  border-radius: 999px;
  background: rgba(255,255,255,.13);
  overflow: hidden;
}
.mini-progress span { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--copper-2), #fff0c2); transition: width .35s ease; }
.ctrl-btn {
  min-width: 34px;
  height: 34px;
  padding: 0 .7em;
  border: 0;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fffdf7;
  background: rgba(255,255,255,.10);
  text-decoration: none;
  cursor: pointer;
  font-family: var(--display);
  font-size: 13px;
  font-weight: 800;
}
.ctrl-btn:hover { background: rgba(255,255,255,.19); }
.ctrl-btn.primary { background: var(--copper); }
.ctrl-btn.text { padding-inline: 1em; }

.notes-drawer {
  position: fixed;
  left: 50%;
  bottom: 72px;
  width: min(920px, calc(100vw - 32px));
  max-height: min(42vh, 360px);
  z-index: 30;
  display: flex;
  flex-direction: column;
  border-radius: 24px;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 0 28px 90px rgba(16,36,59,.18);
  backdrop-filter: blur(18px);
  transform: translate(-50%, calc(100% + 110px));
  transition: transform .28s ease;
}
.notes-drawer.open { transform: translate(-50%, 0); }
.notes-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--display);
  font-weight: 800;
}
.notes-close,
.overview-close {
  border: 0;
  background: var(--ink);
  color: #fff;
  border-radius: 999px;
  width: 34px;
  height: 34px;
  cursor: pointer;
}
.notes-content { overflow: auto; padding: 18px 22px 22px; color: var(--ink); font-size: 18px; line-height: 1.62; }
.notes-content strong { color: var(--copper); }
.notes-content ul { margin: .5em 0 0 1.2em; }

.overview-panel {
  position: fixed;
  inset: 0;
  z-index: 50;
  padding: clamp(18px, 3vw, 54px);
  background: rgba(5,14,25,.78);
  backdrop-filter: blur(20px);
  display: none;
}
.overview-panel.open { display: block; }
.overview-shell {
  width: min(1180px, 100%);
  max-height: 100%;
  margin: 0 auto;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border-radius: 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.overview-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
  padding: 24px 28px 18px;
  border-bottom: 1px solid var(--line);
}
.overview-eyebrow { color: var(--copper); font-family: var(--display); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; font-size: 12px; }
.overview-header h2 { margin: 4px 0 0; font-family: var(--display); font-size: 30px; line-height: 1.1; }
.overview-grid {
  overflow: auto;
  padding: 24px 28px 30px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 14px;
}
.overview-card {
  min-height: 128px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  text-align: left;
  background: var(--paper);
  cursor: pointer;
  transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease, background .24s ease;
}
.overview-card:hover,
.overview-card.is-active { border-color: rgba(184,115,56,.56); box-shadow: 0 14px 34px rgba(16,36,59,.10); transform: translateY(-2px); background: #fffdf7; }
.overview-card span { display: block; color: var(--copper); font-family: var(--display); font-size: 12px; font-weight: 800; margin-bottom: 8px; }
.overview-card strong { display: block; color: var(--ink); font-family: var(--display); font-size: 17px; line-height: 1.18; }

@media (max-aspect-ratio: 1/1) {
  .stage { padding: calc(var(--tabs-h, 56px) + 8px) 8px 8px; }
  .slide {
    --slide-w: min(calc(100vw - 12px), calc((100vh - (84px + var(--tabs-h, 56px))) * 16 / 9));
    --slide-h: min(calc(100vh - (84px + var(--tabs-h, 56px))), calc((100vw - 12px) * 9 / 16));
    padding: 20px;
    gap: 12px;
  }
  .deck-mark { display: none; }
  .slide-title { font-size: clamp(20px, 5.5vw, 42px); }
  .slide-takeaway { font-size: clamp(12px, 3.2vw, 19px); }
  .slide-bullets { display: none; }
  .visual-caption { display: none; }
  .framework-strip { display: none; }
  .controls { max-width: calc(100vw - 12px); overflow-x: auto; }
  .controls-right .text { display: none; }
}

@media (max-height: 760px) {
  .slide-link { display: none; }
}

@keyframes slide-bloom {
  0% { opacity: .18; transform: translateY(16px) scale(.982); }
  62% { opacity: 1; transform: translateY(-1px) scale(1.002); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes copy-rise {
  0% { opacity: 0; transform: translateY(18px); }
  100% { opacity: 1; transform: translateY(0); }
}
@keyframes bullet-rise {
  0% { opacity: 0; transform: translateX(-14px) translateY(8px); }
  100% { opacity: 1; transform: translateX(0) translateY(0); }
}
@keyframes visual-rise {
  0% { opacity: 0; transform: translateX(24px) rotate(.8deg) scale(.975); }
  100% { opacity: 1; transform: translateX(0) rotate(0) scale(1); }
}
@keyframes caption-pop {
  0% { opacity: 0; transform: translateY(8px) scale(.96); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes pill-rise {
  0% { opacity: 0; transform: translateY(10px) scale(.96); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Notebook tab bar overlay — presentation.js never toggles the static
   .controls-visible class (controls stay at opacity 1 always), so the
   tab bar mirrors that and stays visible rather than auto-hiding. */
.nb-tabs {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  border-bottom: none;
  z-index: 40;
  opacity: .92;
}
.nb-tab.active {
  border-bottom: 1.5px solid var(--line);
  border-radius: 8px;
  margin-bottom: 0;
}
@media (max-aspect-ratio: 1/1) {
  .nb-tabs { padding-top: 10px; }
}