/* ============================================================
   AIRGAS CORPORATE THEME
   Palette extracted from Corporate_2022_Airgas_Confidential_EN
   - dk1 primary teal  #006272
   - accent1 amber     #F1B434
   - accent2 light cyan #4EC3E0
   - accent6 red       #A73321
   - lt2 warm grey     #D0D0CE
   - orange            #FF8200
   Font: Arial (body) + Arial Black / Arial Tight weight stand-in
   ============================================================ */
:root {
  /* AIRGAS PALETTE */
  --ag-teal:      #006272;
  --ag-teal-deep: #004A58;
  --ag-teal-dark: #00323C;
  --ag-teal-soft: #4EC3E0;
  --ag-teal-mist: #E6F1F3;
  --ag-amber:     #F1B434;
  --ag-orange:    #FF8200;
  --ag-red:       #A73321;
  --ag-lime:      #AFE400;
  --ag-green:     #58B947;
  --ag-grey:      #D0D0CE;
  --ag-grey-2:    #8A8D8F;
  --ag-ink:       #111418;
  --ag-paper:     #FFFFFF;
  --ag-paper-2:   #F7F8F5;
  --ag-paper-3:   #EEF1EC;

  --bg-ink:      var(--ag-teal-dark);
  --bg-ink-2:    var(--ag-teal-deep);
  --bg-paper:    var(--ag-paper);
  --bg-paper-2:  var(--ag-paper-2);

  --ink:         var(--ag-ink);
  --ink-soft:    rgba(17,20,24,0.66);
  --ink-faint:   rgba(17,20,24,0.34);
  --ink-line:    rgba(17,20,24,0.14);
  --paper:       #FFFFFF;
  --paper-soft:  rgba(255,255,255,0.74);
  --paper-faint: rgba(255,255,255,0.44);
  --paper-line:  rgba(255,255,255,0.18);

  /* SEMANTIC — remap to Airgas tokens */
  --accent:      var(--ag-teal);
  --accent-deep: var(--ag-teal-deep);
  --accent-soft: var(--ag-teal-soft);
  --signal:      var(--ag-amber);
  --signal-deep: var(--ag-orange);
  --good:        var(--ag-green);
  --cool:        var(--ag-teal-soft);
  --spark:       var(--ag-amber);
  --warn:        var(--ag-red);

  --font-display: "Arial", "Helvetica Neue", Helvetica, sans-serif;
  --font-body:    "Arial", "Helvetica Neue", Helvetica, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

/* ============ RESET / GLOBALS ============ */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: #000;
  font-family: var(--font-body);
  font-feature-settings: "tnum";
  -webkit-font-smoothing: antialiased;
  color: var(--ink);
}

deck-stage { font-family: var(--font-body); }

/* ============ SLIDE BASE ============ */
section.slide {
  display: flex;
  flex-direction: column;
  padding: 80px 96px 64px 96px;
  background: var(--bg-paper);
  color: var(--ink);
  position: relative;
  overflow: hidden;
}
section.slide.dark {
  background: var(--bg-ink);
  color: var(--paper);
}
section.slide.teal {
  background: var(--ag-teal);
  color: var(--paper);
}

/* Airgas droplet motif — every dark slide */
section.slide.dark::before,
section.slide.teal::before {
  content: "";
  position: absolute;
  right: -140px;
  bottom: -220px;
  width: 760px;
  height: 760px;
  background:
    radial-gradient(circle at 30% 30%, transparent 58%, rgba(78,195,224,0.22) 58%, rgba(78,195,224,0.22) 59%, transparent 59.5%),
    radial-gradient(circle at 70% 72%, transparent 30%, rgba(78,195,224,0.18) 30%, rgba(78,195,224,0.18) 31%, transparent 31.5%);
  pointer-events: none;
  z-index: 0;
  opacity: 0.85;
}
section.slide.dark > *,
section.slide.teal > * { position: relative; z-index: 1; }

/* Signature Airgas ribbon on all slides */
section.slide::after {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 12px;
  background: var(--ag-teal);
  z-index: 2;
  pointer-events: none;
}
section.slide.dark::after,
section.slide.teal::after { background: var(--ag-teal-soft); }

/* ============ SLIDE HEADER / CORNER META ============ */
.meta {
  position: absolute;
  top: 32px;
  left: 96px;
  right: 96px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 500;
  z-index: 3;
}
.dark .meta, .teal .meta { color: var(--paper-soft); }
.meta .mark { display: flex; align-items: center; gap: 14px; }
.meta .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 25%, transparent);
}
.dark .meta .dot, .teal .meta .dot {
  background: var(--ag-teal-soft);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--ag-teal-soft) 25%, transparent);
}

/* ============ TYPE SCALE ============ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 600;
  margin: 0;
}
.dark .eyebrow, .teal .eyebrow { color: var(--ag-teal-soft); }

.title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 80px;
  line-height: 1.04;
  letter-spacing: -0.022em;
  margin: 0;
  text-wrap: balance;
}
.title-sm {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 60px;
  line-height: 1.05;
  letter-spacing: -0.018em;
  margin: 0;
  text-wrap: balance;
}
.kicker {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 30px;
  line-height: 1.28;
  letter-spacing: -0.008em;
  color: var(--ink-soft);
  margin: 0;
  text-wrap: pretty;
}
.dark .kicker, .teal .kicker { color: var(--paper-soft); }

.body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 26px;
  line-height: 1.4;
  letter-spacing: -0.002em;
  color: var(--ink);
  margin: 0;
  text-wrap: pretty;
}
.dark .body, .teal .body { color: var(--paper); }
.body.soft { color: var(--ink-soft); }
.dark .body.soft, .teal .body.soft { color: var(--paper-soft); }

.small {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink-soft);
  margin: 0;
}
.dark .small, .teal .small { color: var(--paper-soft); }

.mono {
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  font-weight: 500;
}
.dark .mono, .teal .mono { color: var(--paper-soft); }

.big-number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 200px;
  line-height: 0.94;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--ag-teal);
  margin: 0;
}
.dark .big-number, .teal .big-number { color: var(--ag-teal-soft); }

.medium-number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 128px;
  line-height: 0.96;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--ag-teal);
  margin: 0;
}
.dark .medium-number, .teal .medium-number { color: var(--ag-teal-soft); }

.accent { color: var(--accent); }
.dark .accent, .teal .accent { color: var(--ag-teal-soft); }
.signal { color: var(--signal); }
.good { color: var(--good); }
.warn { color: var(--warn); }

/* ============ HAIRLINE / STRUCTURAL ============ */
.hair { height: 1px; background: var(--ink-line); width: 100%; }
.dark .hair, .teal .hair { background: var(--paper-line); }

.chip {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 14px;
  border: 1px solid var(--ink-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: transparent;
}
.dark .chip, .teal .chip { border-color: var(--paper-line); color: var(--paper-soft); }
.chip.accent {
  color: var(--ag-teal);
  border-color: color-mix(in oklch, var(--ag-teal) 50%, transparent);
  background: var(--ag-teal-mist);
}
.dark .chip.accent, .teal .chip.accent {
  color: var(--ag-teal-soft);
  border-color: color-mix(in oklch, var(--ag-teal-soft) 50%, transparent);
  background: rgba(78,195,224,0.10);
}
.chip.signal { color: var(--ag-orange); border-color: color-mix(in oklch, var(--ag-orange) 50%, transparent); }
.chip.warn { color: var(--ag-red); border-color: color-mix(in oklch, var(--ag-red) 50%, transparent); }

/* ============ PAGE FOOTER ============ */
.footer {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 12px 96px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  z-index: 5;
  pointer-events: none;
  background: linear-gradient(to top, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.8) 60%, transparent 100%);
}
.dark .footer, .teal .footer {
  color: var(--paper-faint);
  background: linear-gradient(to top, rgba(15,30,61,0.95) 0%, rgba(15,30,61,0.8) 60%, transparent 100%);
}
.teal .footer {
  background: linear-gradient(to top, rgba(0,98,114,0.95) 0%, rgba(0,98,114,0.8) 60%, transparent 100%);
}
.footer .source { max-width: 55%; text-transform: none; letter-spacing: 0.02em; font-size: 11px; }

/* Airgas wordmark footer-left on every slide */
.footer .airgas-mark {
  display: flex;
  align-items: baseline;
  gap: 6px;
  letter-spacing: 0;
  text-transform: none;
}
.footer .airgas-mark .word {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: -0.02em;
  color: var(--ag-teal);
  text-transform: none;
}
.dark .footer .airgas-mark .word,
.teal .footer .airgas-mark .word { color: rgba(255,255,255,0.8); }
.footer .airgas-mark .sub {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 400;
  color: var(--ink-faint);
  text-transform: none;
  letter-spacing: 0.01em;
}
.dark .footer .airgas-mark .sub,
.teal .footer .airgas-mark .sub { color: rgba(255,255,255,0.45); }

/* ============ GRIDS ============ */
.row { display: flex; }
.col { display: flex; flex-direction: column; }
.g-8 { gap: 8px; }  .g-16 { gap: 16px; }  .g-24 { gap: 24px; }
.g-32 { gap: 32px; } .g-48 { gap: 48px; } .g-64 { gap: 64px; } .g-80 { gap: 80px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }

.body-region {
  margin-top: 64px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  padding-bottom: 32px;
}

/* ============ CARDS / PANELS ============ */
.panel {
  border: 1px solid var(--ink-line);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: var(--ag-paper);
  border-radius: 4px;
  border-top: 4px solid var(--ag-teal);
}
.dark .panel, .teal .panel {
  border-color: var(--paper-line);
  background: rgba(255,255,255,0.04);
  border-top-color: var(--ag-teal-soft);
}
.panel.plain { border-top: 1px solid var(--ink-line); background: transparent; }
.dark .panel.plain, .teal .panel.plain { border-top: 1px solid var(--paper-line); }

.panel .label {
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ag-teal);
  font-weight: 700;
}
.dark .panel .label, .teal .panel .label { color: var(--ag-teal-soft); }

/* Airgas badge — used for section labels / slide numbers */
.ag-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  background: var(--ag-teal);
  color: white;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 3px;
}
.dark .ag-badge, .teal .ag-badge {
  background: var(--ag-teal-soft); color: var(--ag-teal-dark);
}

/* ============ SVG placeholder backgrounds ============ */
.placeholder-stripes {
  background: repeating-linear-gradient(
    135deg,
    var(--bg-paper-2) 0 8px,
    transparent 8px 16px
  );
}

/* ============ ANIMATION ============ */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}
@keyframes flow {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: -60; }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 1; }
[data-deck-active] .reveal { animation: none; }
[data-deck-active] .reveal-1 { animation-delay: 0.05s; }
[data-deck-active] .reveal-2 { animation-delay: 0.18s; }
[data-deck-active] .reveal-3 { animation-delay: 0.31s; }
[data-deck-active] .reveal-4 { animation-delay: 0.44s; }
[data-deck-active] .reveal-5 { animation-delay: 0.57s; }

/* ============ TWEAKS PANEL ============ */
#tweaks-panel {
  position: fixed;
  right: 20px;
  bottom: 70px;
  z-index: 2147482500;
  width: 280px;
  background: var(--ag-teal-dark);
  color: #F5F5F2;
  border: 1px solid rgba(245,245,242,0.18);
  border-radius: 10px;
  padding: 16px;
  font-family: var(--font-body);
  font-size: 13px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
  display: none;
}
#tweaks-panel.on { display: block; }
#tweaks-panel h4 {
  margin: 0 0 12px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ag-teal-soft);
  font-weight: 600;
}
#tweaks-panel .row {
  display: flex; justify-content: space-between; align-items: center;
  margin: 10px 0;
  gap: 10px;
}
#tweaks-panel label { color: rgba(245,245,242,0.72); font-size: 12px; }
#tweaks-panel button {
  background: transparent;
  color: #F5F5F2;
  border: 1px solid rgba(245,245,242,0.28);
  padding: 6px 10px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  cursor: pointer;
}
#tweaks-panel button.active {
  background: var(--ag-teal-soft);
  color: var(--ag-teal-dark);
  border-color: var(--ag-teal-soft);
}
#tweaks-panel .seg { display: flex; gap: 6px; }