@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400;1,600&family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;0,8..60,700;1,8..60,400&display=swap');

/* Slide type files — each contains structure + light theme + dark theme */
@import url('./pres_title.css?v=4');     /* Title slide: structure → light → dark */
@import url('./pres_section.css?v=4');   /* Section slide: structure → light → dark */
@import url('./pres_normal.css?v=5');    /* Normal slide: flat layout, no card container */
@import url('./pres_card.css?v=1');     /* Card slide: elevated card container */
@import url('./pres_twocol.css?v=4');    /* Two-column slide */
@import url('./pres_quote.css?v=4');     /* Quote slide */
@import url('./pres_stat.css?v=4');      /* Stat/figure slide */
@import url('./pres_fullbleed.css?v=4'); /* Full-bleed image slide */
@import url('./pres_grid.css?v=4');      /* Image grid slide */
@import url('./pres_table.css?v=4');     /* Table slide */
@import url('./pres_code.css?v=4');      /* Code slide */
@import url('./pres_compare.css?v=4');   /* Comparison slide */
@import url('./pres_timeline.css?v=4');  /* Timeline slide */
@import url('./pres_team.css?v=4');      /* Team slide */
@import url('./pres_closing.css?v=4');   /* Closing slide */

/* ============================================================
   Brand palette
   ============================================================ */
:root {
  --brand-violet:    #440099;
  --dark-violet:     #24125E;
  --electric-violet: #7000FF;
  --powder-violet:   #A78CFA;
  --pale-violet:     #C6BBFF;
  --wave-white:      #F8F8F9;
  --midnight-black:  #131E29;

  /* Wider palette — to be used sparingly */
  --coral:        #E7004C;
  --purple:       #981F92;
  --teal:         #005A8F;
  --peak-green:   #005750;
  --flamingo:     #FF6371;
  --pink:         #FF79E1;
  --aqua:         #00BBCC;
  --spearmint:    #3BD4AE;
  --peach:        #FF9664;
  --lavender:     #DAA8E2;
  --powder-blue:  #9ADBE8;
  --pastel-green: #A1DED2;

  --font-sans:  'Source Sans 3', system-ui, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;

  /* Projection-friendly sizes via clamp so they also look good in-window */
  --fs-eyebrow:  clamp(0.78rem, 1.1vw, 1rem);
  --fs-meta:     clamp(0.85rem, 1.15vw, 1.05rem);
  --fs-body:     clamp(1.05rem, 1.6vw, 1.5rem);
  --fs-lead:     clamp(1.2rem, 2vw, 1.75rem);
  --fs-h3:       clamp(1.3rem, 2.2vw, 1.9rem);
  --fs-h2:       clamp(2rem, 3.6vw, 3.2rem);
  --fs-h1:       clamp(2.8rem, 6vw, 5.2rem);
  --fs-display:  clamp(4rem, 10vw, 9rem);
  --fs-quote:    clamp(1.8rem, 3.4vw, 3rem);

  --slide-padding-y: clamp(3rem, 6vh, 5.5rem);
  --slide-padding-x: clamp(3rem, 7vw, 7rem);
  --content-width:   min(1200px, 86vw);
  --slide-transition: 420ms cubic-bezier(0.4, 0, 0.2, 1);
  --footer-h:        clamp(44px, 5.5vh, 54px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-sans);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ============================================================
   Deck
   ============================================================ */
#deck {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* ============================================================
   Slides — positioning + transition
   ============================================================ */
.slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--slide-padding-y) var(--slide-padding-x);
  opacity: 0;
  transform: translateX(48px);
  transition: opacity var(--slide-transition), transform var(--slide-transition);
  pointer-events: none;
  will-change: transform, opacity;
  overflow: hidden;
}

.slide.prev {
  opacity: 0;
  transform: translateX(-48px);
}

.slide.active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
  z-index: 1;
}

.slide__content {
  width: 100%;
  max-width: var(--content-width);
  position: relative;
  z-index: 2;
}

/* ============================================================
   Typography defaults
   ============================================================ */
h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  text-wrap: balance;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); line-height: 1.1; }
h3 { font-size: var(--fs-h3); line-height: 1.2; letter-spacing: -0.01em; }

p {
  font-size: var(--fs-body);
  line-height: 1.55;
  text-wrap: pretty;
  margin-bottom: 0.75rem;
}

p.lead {
  font-size: var(--fs-lead);
  line-height: 1.45;
  font-weight: 400;
}

ul, ol {
  padding-left: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-bottom: 0.75rem;
}

li {
  font-size: var(--fs-body);
  line-height: 1.5;
  padding-left: 0.35rem;
}

li::marker { font-variant-numeric: tabular-nums; }

dl {
  display: grid;
  grid-template-columns: fit-content(22ch) 1fr;
  column-gap: 2.5rem;
}

dt {
  font-size: var(--fs-body);
  font-weight: 700;
  line-height: 1.5;
  padding: 0.55rem 0 0.55rem 1rem;
  border-top: 1px solid;
  position: relative;
}

dt::before {
  content: '';
  position: absolute;
  left: 0;
  top: calc(0.55rem + 0.1em);
  bottom: calc(0.55rem + 0.1em);
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(to bottom, var(--brand-violet), var(--electric-violet));
}

dd {
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.5;
  padding: 0.55rem 0;
  border-top: 1px solid;
}

dl > dt:first-child,
dl > dt:first-child + dd {
  border-top: none;
  padding-top: 0;
}

strong { font-weight: 700; font-style: normal; }

.eyebrow {
  display: inline-block;
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.serif { font-family: var(--font-serif); }

.kicker {
  display: block;
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.9rem;
}

/* ============================================================
   LIGHT THEME — global (body, typography, nav)
   Per-slide colours live in each slide's own CSS file.
   ============================================================ */
[data-theme="light"] body  { background: var(--pale-violet); color: var(--midnight-black); }

[data-theme="light"] h1     { color: var(--midnight-black); }
[data-theme="light"] h2     { color: var(--midnight-black); }
[data-theme="light"] h3     { color: var(--brand-violet); }
[data-theme="light"] p      { color: var(--dark-violet); }
[data-theme="light"] li     { color: var(--dark-violet); }
[data-theme="light"] li::marker { color: var(--brand-violet); }
[data-theme="light"] strong { color: var(--brand-violet); }
[data-theme="light"] em     { color: var(--brand-violet); }
[data-theme="light"] .kicker { color: var(--brand-violet); }
[data-theme="light"] dt { color: var(--brand-violet); border-top-color: rgba(68, 0, 153, 0.15); }
[data-theme="light"] dd { color: var(--dark-violet);  border-top-color: rgba(68, 0, 153, 0.15); }

[data-theme="light"] #nav {
  background: rgba(248, 248, 249, 0.92);
  border-color: rgba(68, 0, 153, 0.15);
  color: var(--dark-violet);
}
[data-theme="light"] #nav button:hover { background: rgba(68, 0, 153, 0.07); }
[data-theme="light"] #counter  { color: var(--brand-violet); }
[data-theme="light"] #progress { background: var(--electric-violet); }

/* ============================================================
   DARK THEME — global (body, typography, nav)
   Per-slide colours live in each slide's own CSS file.
   ============================================================ */
[data-theme="dark"] body   { background: var(--dark-violet); color: var(--wave-white); }

[data-theme="dark"] h1, [data-theme="dark"] h2 { color: var(--wave-white); }
[data-theme="dark"] h3     { color: var(--powder-violet); }
[data-theme="dark"] p      { color: var(--wave-white); }
[data-theme="dark"] li     { color: var(--wave-white); }
[data-theme="dark"] li::marker { color: var(--pale-violet); }
[data-theme="dark"] strong { color: var(--powder-violet); }
[data-theme="dark"] em     { color: var(--powder-violet); }
[data-theme="dark"] .kicker { color: var(--powder-violet); }
[data-theme="dark"] dt { color: var(--powder-violet); border-top-color: rgba(198, 187, 255, 0.12); }
[data-theme="dark"] dd { color: var(--wave-white);   border-top-color: rgba(198, 187, 255, 0.12); }
[data-theme="dark"] dt::before { background: linear-gradient(to bottom, var(--powder-violet), var(--electric-violet)); }

[data-theme="dark"] #nav {
  background: rgba(36, 18, 94, 0.90);
  border-color: rgba(198, 187, 255, 0.20);
  color: var(--wave-white);
}
[data-theme="dark"] #nav button:hover { background: rgba(198, 187, 255, 0.10); }
[data-theme="dark"] #counter  { color: var(--powder-violet); }
[data-theme="dark"] #progress { background: var(--electric-violet); }

/* ============================================================
   Navigation
   ============================================================ */
#nav {
  position: fixed;
  bottom: calc(var(--footer-h) + 1rem);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-radius: 2rem;
  padding: 0.4rem 0.85rem;
  border-width: 1px;
  border-style: solid;
  z-index: 100;
  opacity: 0;
  transition: opacity 0.3s ease;
  font-size: 0.85rem;
}

body.show-nav #nav, #nav:hover, #nav:focus-within { opacity: 1; }

#nav button {
  background: none;
  border: none;
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
  line-height: 1;
  transition: background 0.15s;
  font-family: var(--font-sans);
  color: inherit;
}

#nav button:disabled { opacity: 0.25; cursor: default; }

#counter {
  font-size: 0.8rem;
  min-width: 3.5rem;
  text-align: center;
  font-variant-numeric: tabular-nums;
  user-select: none;
  padding: 0 0.25rem;
}

#nav-divider, .nav-divider {
  width: 1px;
  height: 1.1rem;
  background: currentColor;
  opacity: 0.2;
}

/* Theme toggle switch */
.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  cursor: pointer;
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.theme-switch::before { content: 'Light'; }
.theme-switch::after  { content: 'Dark'; }

.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.theme-switch__track {
  position: relative;
  width: 36px;
  height: 20px;
  flex-shrink: 0;
}

.theme-switch__slider {
  position: absolute;
  inset: 0;
  border-radius: 10px;
  transition: background 0.22s;
}

.theme-switch__slider::before {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-switch input:checked ~ .theme-switch__track .theme-switch__slider::before {
  transform: translateX(16px);
}

[data-theme="light"] .theme-switch__slider                                                    { background: rgba(68, 0, 153, 0.18); }
[data-theme="light"] .theme-switch__slider::before                                            { background: var(--brand-violet); }
[data-theme="light"] .theme-switch input:checked ~ .theme-switch__track .theme-switch__slider          { background: var(--dark-violet); }
[data-theme="light"] .theme-switch input:checked ~ .theme-switch__track .theme-switch__slider::before  { background: var(--powder-violet); }

[data-theme="dark"] .theme-switch__slider                                                     { background: rgba(198, 187, 255, 0.18); }
[data-theme="dark"] .theme-switch__slider::before                                             { background: rgba(198, 187, 255, 0.55); }
[data-theme="dark"] .theme-switch input:checked ~ .theme-switch__track .theme-switch__slider           { background: var(--electric-violet); }
[data-theme="dark"] .theme-switch input:checked ~ .theme-switch__track .theme-switch__slider::before   { background: var(--wave-white); }

/* Slide badge — bottom-right stamp */

/* Jump-to-slide hint */
#jump-hint {
  position: fixed;
  bottom: 50%;
  left: 50%;
  transform: translate(-50%, 50%);
  font-size: 3rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  padding: 1.5rem 2.5rem;
  border-radius: 16px;
  background: rgba(19, 30, 41, 0.88);
  color: var(--wave-white);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 200;
  opacity: 0;
  transition: opacity 0.15s;
  pointer-events: none;
}

#jump-hint.visible { opacity: 1; }

#jump-hint .label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 0.5rem;
  text-align: center;
}

/* Progress bar */
#progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  transition: width var(--slide-transition);
  z-index: 200;
}

/* ============================================================
   Tweaks panel
   ============================================================ */
#tweaks {
  position: fixed;
  bottom: 5rem;
  right: 1.5rem;
  width: 260px;
  padding: 1.25rem;
  border-radius: 14px;
  background: rgba(19, 30, 41, 0.92);
  color: var(--wave-white);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 150;
  font-size: 0.85rem;
  display: none;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}

#tweaks.visible { display: block; }

#tweaks h4 {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.9rem;
  opacity: 0.7;
}

#tweaks .tweak-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.9rem;
  gap: 0.75rem;
}

#tweaks .tweak-row:last-child { margin-bottom: 0; }

#tweaks label { font-size: 0.8rem; opacity: 0.85; }

#tweaks .swatches { display: flex; gap: 0.35rem; }

#tweaks .swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
  transition: transform 0.15s;
}

#tweaks .swatch:hover { transform: scale(1.1); }
#tweaks .swatch.active { border-color: var(--wave-white); }

#tweaks select {
  background: rgba(255,255,255,0.08);
  color: inherit;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 6px;
  padding: 0.3rem 0.55rem;
  font-family: inherit;
  font-size: 0.8rem;
}

/* ============================================================
   Slide footer
   Suppressed slide types are listed here — edit this list to
   control which slide classes show or hide the footer.
   ============================================================ */
.slide--title      .slide-footer,
.slide--section    .slide-footer,
.slide--full-bleed .slide-footer,
.slide--closing    .slide-footer { display: none; }

.slide-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--footer-h);
  display: flex;
  align-items: center;
  padding: 0 var(--slide-padding-x);
  z-index: 10;
  gap: 1.5rem;
  overflow: hidden;
}

/* Gradient accent line across the top of the footer */
.slide-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: var(--slide-padding-x);
  right: var(--slide-padding-x);
  height: 1px;
  background: linear-gradient(
    90deg,
    var(--brand-violet) 0%,
    var(--electric-violet) 45%,
    transparent 100%
  );
}

.slide-footer__left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.slide-footer__title {
  font-family: var(--font-sans);
  font-size: clamp(0.62rem, 0.8vw, 0.76rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.slide-footer__dot {
  flex-shrink: 0;
  opacity: 0.30;
  font-size: 0.65rem;
  line-height: 1;
}

.slide-footer__author {
  font-family: var(--font-sans);
  font-size: clamp(0.62rem, 0.8vw, 0.76rem);
  font-weight: 500;
  letter-spacing: 0.03em;
  white-space: nowrap;
  flex-shrink: 0;
}

.slide-footer__center {
  flex-shrink: 0;
}

.slide-footer__num {
  font-family: var(--font-sans);
  font-size: clamp(0.78rem, 1vw, 0.95rem);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.slide-footer__right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 0.1rem;
  flex: 1;
  min-width: 0;
}

.slide-footer__org {
  font-family: var(--font-serif);
  font-size: clamp(16px, 2.85vh, 20px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.slide-footer__sep {
  display: inline-block;
  width: 1px;
  height: 0.9rem;
  flex-shrink: 0;
  align-self: center;
}

.slide-footer__logo {
  height: clamp(22px, 2.85vh, 30px);
  width: auto;
  flex-shrink: 0;
  display: block;
}

/* Light theme */
[data-theme="light"] .slide-footer::before  { opacity: 0.28; }
[data-theme="light"] .slide-footer__num     { color: var(--dark-violet); opacity: 0.70; }
[data-theme="light"] .slide-footer__title   { color: var(--dark-violet); opacity: 0.55; }
[data-theme="light"] .slide-footer__dot     { color: var(--dark-violet); }
[data-theme="light"] .slide-footer__author  { color: var(--dark-violet); }
[data-theme="light"] .slide-footer__org     { color: var(--brand-violet); }
[data-theme="light"] .slide-footer__sep     { background: rgba(68, 0, 153, 0.20); }
[data-theme="light"] .slide-footer__logo--dark  { display: none; }

/* Dark theme */
[data-theme="dark"]  .slide-footer::before  { opacity: 0.45; }
[data-theme="dark"]  .slide-footer__num     { color: var(--powder-violet); opacity: 0.70; }
[data-theme="dark"]  .slide-footer__title   { color: var(--powder-violet); opacity: 0.55; }
[data-theme="dark"]  .slide-footer__dot     { color: var(--powder-violet); }
[data-theme="dark"]  .slide-footer__author  { color: var(--powder-violet); }
[data-theme="dark"]  .slide-footer__org     { color: var(--powder-violet); }
[data-theme="dark"]  .slide-footer__sep     { background: rgba(198, 187, 255, 0.20); }
[data-theme="dark"]  .slide-footer__logo--light { display: none; }

/* ============================================================
   Print — one slide per page (A4 landscape)
   ============================================================ */
@media print {
  @page { size: 297mm 167mm; margin: 0; }

  html, body {
    overflow: visible;
    width: 297mm;
    height: auto;
    background: #fff !important;
    color: #000 !important;
  }

  #nav, #progress, #jump-hint { display: none !important; }

  #deck {
    width: 297mm;
    height: auto;
    overflow: visible;
  }

  .slide {
    position: relative !important;
    inset: auto !important;
    width: 297mm;
    height: 167mm;
    opacity: 1 !important;
    transform: none !important;
    page-break-after: always;
    break-after: page;
    pointer-events: auto !important;
    overflow: hidden !important;
  }

  .slide:last-child { page-break-after: auto; break-after: auto; }
}