/* ============================================================
   OSTRO ENERGY — Live Interactive Deck
   Perspectives on Canadian Oil & Gas Prices, Apr 2026
   Editorial financial aesthetic · Lato · Ostro red + slate
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Lato:wght@300;400;700;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Brand — from Ostro Energy identity guidelines */
  --ostro-red: #A6192E;          /* Pantone 187 C */
  --ostro-red-deep: #7A1222;
  --ostro-red-bright: #C8304A;
  --ostro-grey: #5B6770;         /* Pantone 445 C */
  --ostro-grey-deep: #2E3840;

  /* Editorial neutrals */
  --paper: #F7F5F1;
  --paper-2: #ECE8E1;
  --ink: #0E1116;
  --ink-2: #1C2229;
  --ink-3: #3A424B;
  --line: rgba(14, 17, 22, 0.10);
  --line-2: rgba(14, 17, 22, 0.22);
  --muted: #6B7580;

  /* Data viz — palette tuned to brand */
  --dv-red: #A6192E;
  --dv-red-2: #C8304A;
  --dv-red-3: #7A1222;
  --dv-ink: #1C2229;
  --dv-slate: #5B6770;
  --dv-slate-2: #8A96A0;
  --dv-amber: #C78B1E;
  --dv-moss: #4A6D41;
  --dv-teal: #1F5C67;
  --dv-sky: #2E6E9E;

  /* Type scale @ 1920x1080 */
  --fs-display: 108px;
  --fs-title: 68px;
  --fs-subtitle: 44px;
  --fs-body: 30px;
  --fs-small: 24px;
  --fs-caption: 20px;
  --fs-mono: 22px;

  /* Spacing */
  --pad-x: 96px;
  --pad-y: 80px;
  --pad-top: 88px;
  --pad-bot: 72px;
  --gap-title: 48px;
  --gap-item: 24px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: #000;
  font-family: 'Lato', -apple-system, BlinkMacSystemFont, Helvetica, Arial, sans-serif;
  color: var(--ink);
  overflow: hidden;
  /* Prevent iOS Safari bounce-scroll from revealing body behind the deck */
  position: fixed;
  width: 100%;
  height: 100%;
  -webkit-overflow-scrolling: touch;
  touch-action: none;
}

.mono { font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace; font-feature-settings: "tnum" 1; }
.tnum { font-variant-numeric: tabular-nums; }

/* ---------- Slide base ---------- */
.slide {
  background: var(--paper);
  color: var(--ink);
  padding: var(--pad-top) var(--pad-x) var(--pad-bot);
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Override deck-stage cross-fade with horizontal slide-in */
deck-stage::part { /* noop, placeholder */ }
::slotted(.slide) {
  transform: translateX(40px);
  transition: opacity 420ms cubic-bezier(.2,.7,.2,1), transform 420ms cubic-bezier(.2,.7,.2,1), visibility 0s linear 420ms;
}
::slotted(.slide[data-deck-active]) {
  transform: translateX(0);
  transition: opacity 420ms cubic-bezier(.2,.7,.2,1), transform 420ms cubic-bezier(.2,.7,.2,1), visibility 0s;
}

/* ---------- Chrome: slide masthead (top bar) ---------- */
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-x);
  height: 56px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 2;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.masthead .mast-left { display: flex; align-items: center; gap: 14px; }
.masthead .mast-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ostro-red); }
.masthead .mast-ticker {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink-2);
  flex-wrap: wrap;
  justify-content: center;
}
.masthead .mast-ticker .tk {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(28,34,41,0.08);
  box-shadow: 0 1px 2px rgba(28,34,41,0.04);
  white-space: nowrap;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}
.masthead .mast-ticker a.tk:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(28,34,41,0.10);
}
.masthead .mast-ticker .tk-label {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0.05em;
}
.masthead .mast-ticker .tk-status {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  border: 1px solid transparent;
}
.masthead .mast-ticker .tk-status.live {
  color: #0a7a3f;
  background: rgba(10,122,63,0.08);
  border-color: rgba(10,122,63,0.22);
}
.masthead .mast-ticker .tk-status.near-live {
  color: #9a5f00;
  background: rgba(199,139,30,0.12);
  border-color: rgba(199,139,30,0.28);
}
.masthead .mast-ticker .tk-status.reference {
  color: var(--muted);
  background: rgba(14,17,22,0.05);
  border-color: rgba(14,17,22,0.12);
}
.masthead .mast-ticker .tk-value { color: var(--ink); font-weight: 800; }
.masthead .mast-ticker .tk-change.up { color: #1f7a3a; }
.masthead .mast-ticker .tk-change.dn { color: var(--ostro-red); }

.slide:not(.section-header) .masthead {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) 250px;
}
.slide:not(.section-header) .masthead .mast-left {
  min-width: 0;
}
.slide:not(.section-header) .masthead .mast-ticker {
  justify-self: center;
  width: max-content;
  max-width: 100%;
  gap: 10px;
}
.slide:not(.section-header) .masthead .mast-ticker .tk {
  gap: 6px;
  padding: 5px 8px;
}
.slide:not(.section-header) .masthead .mast-ticker .tk-status {
  padding: 2px 6px;
  font-size: 9px;
}
.slide:not(.section-header) .masthead > :last-child {
  width: 250px;
  justify-self: end;
  text-align: right;
}

.slide { padding-top: calc(56px + var(--pad-top)); }

.slide-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

/* ---------- Typography ---------- */
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 18px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ostro-red);
  font-weight: 600;
  margin: 0 0 20px;
}
.eyebrow .sep { color: var(--line-2); margin: 0 12px; }

h1.slide-title {
  font-family: 'Lato', sans-serif;
  font-weight: 900;
  font-size: var(--fs-title);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
  color: var(--ink);
  text-wrap: balance;
}
h2.slide-sub {
  font-family: 'Lato', sans-serif;
  font-weight: 300;
  font-size: var(--fs-subtitle);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 var(--gap-title);
  color: var(--ostro-red);
  font-style: italic;
}
h3 {
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 32px;
  letter-spacing: -0.005em;
  margin: 0 0 12px;
}
p.body { font-size: var(--fs-body); line-height: 1.45; margin: 0 0 18px; color: var(--ink-2); }
.small { font-size: var(--fs-small); color: var(--ink-3); }
.caption { font-family: 'JetBrains Mono', monospace; font-size: 15px; color: var(--muted); letter-spacing: 0.02em; }

/* ---------- Section header slides ---------- */
.slide.section-header {
  background: var(--ink);
  color: var(--paper);
  padding-top: 56px;
  justify-content: center;
}
.slide.section-header .masthead { background: transparent; border-bottom-color: rgba(255,255,255,0.08); color: rgba(255,255,255,0.5); }
.slide.section-header .masthead .mast-ticker { color: var(--ink); }
.slide.section-header .masthead .mast-ticker .tk {
  background: rgba(255,255,255,0.94);
  border-color: rgba(255,255,255,0.3);
  box-shadow: 0 10px 24px rgba(0,0,0,0.16);
}
.slide.section-header .masthead .mast-ticker .tk-label,
.slide.section-header .masthead .mast-ticker .tk-value { color: var(--ink); }
.slide.section-header h1.slide-title { color: #fff; font-size: 160px; line-height: 0.95; }
.slide.section-header .eyebrow { color: var(--ostro-red-bright); }
.slide.section-header .section-meta { color: rgba(255,255,255,0.55); }

/* ---------- Footer (source/footnote strip) ---------- */
.footnote {
  position: absolute;
  bottom: 52px; left: var(--pad-x); right: var(--pad-x);
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px; color: var(--muted); letter-spacing: 0.02em;
}
.section-header .footnote { color: rgba(255,255,255,0.35); }

/* ---------- Tags/chips ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: 'JetBrains Mono', monospace; font-size: 14px;
  padding: 6px 12px; border: 1px solid var(--line-2); border-radius: 999px;
  color: var(--ink-2); background: rgba(255,255,255,0.5);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.chip.red { color: var(--ostro-red); border-color: rgba(166,25,46,0.3); background: rgba(166,25,46,0.06); }

/* ---------- Buttons / segmented ---------- */
.segmented {
  display: inline-flex; border: 1px solid var(--line-2); border-radius: 10px; padding: 4px;
  background: rgba(255,255,255,0.5); gap: 2px;
}
.segmented button {
  appearance: none; border: 0; background: transparent;
  font-family: 'JetBrains Mono', monospace; font-size: 14px; letter-spacing: 0.04em;
  padding: 8px 14px; border-radius: 7px;
  color: var(--ink-3); cursor: pointer; text-transform: uppercase; font-weight: 500;
  transition: all 160ms ease;
}
.segmented button:hover { color: var(--ink); background: rgba(0,0,0,0.04); }
.segmented button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

.btn-sm {
  appearance: none; border: 1px solid var(--line-2); background: transparent;
  font-family: 'JetBrains Mono', monospace; font-size: 13px; letter-spacing: 0.04em;
  padding: 8px 12px; border-radius: 8px; color: var(--ink-2); cursor: pointer;
  text-transform: uppercase;
  transition: all 160ms ease;
}
.btn-sm:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-sm[aria-pressed="true"] { background: var(--ostro-red); color: var(--paper); border-color: var(--ostro-red); box-shadow: 0 10px 24px rgba(166,25,46,0.16); }

/* Slider */
.slider-row { display: flex; align-items: center; gap: 20px; }
.slider-row input[type="range"] {
  -webkit-appearance: none; appearance: none;
  height: 4px; background: var(--line-2); border-radius: 2px; outline: none;
  flex: 1;
  position: relative;
  z-index: 5;
  pointer-events: auto;
  touch-action: pan-y;
}
.slider-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--ostro-red); cursor: pointer; border: 3px solid var(--paper);
  box-shadow: 0 2px 8px rgba(166,25,46,0.3);
}
.slider-row input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px; border-radius: 50%; background: var(--ostro-red); cursor: pointer;
}

/* ---------- Data viz base ---------- */
.chart-frame {
  background: linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(250,248,245,0.96) 100%);
  border: 1px solid rgba(14,17,22,0.08);
  border-radius: 18px;
  padding: 28px 32px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 24px rgba(28,34,41,0.035), inset 0 1px 0 rgba(255,255,255,0.65);
}
.chart-frame::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0.85), rgba(255,255,255,0));
  pointer-events: none;
}
.chart-frame .chart-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: 16px; gap: 24px;
}
.chart-frame .chart-title {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.chart-frame .chart-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 6px;
}
.chart-frame .chart-story,
.chart-story {
  margin-top: 10px;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid rgba(166,25,46,0.07);
  background: linear-gradient(90deg, rgba(166,25,46,0.035), rgba(166,25,46,0.01));
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(28,34,41,0.58);
}

.legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--ink-2);
  letter-spacing: 0.04em;
}

/* ---------- Data source badge ---------- */
.data-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; letter-spacing: 0.10em;
  padding: 6px 11px; border-radius: 999px;
  font-weight: 700; text-transform: uppercase;
  white-space: nowrap;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(6px);
}
.data-badge.live {
  color: #0a7a3f; background: rgba(10, 122, 63, 0.07);
  border: 1px solid rgba(10, 122, 63, 0.22);
}
.data-badge.static {
  color: var(--muted); background: rgba(14,17,22,0.035);
  border: 1px solid rgba(14,17,22,0.10);
}
.data-badge .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: #0a7a3f;
  box-shadow: 0 0 0 0 rgba(10, 122, 63, 0.6);
  animation: badgePulse 1.8s infinite;
}
@keyframes badgePulse {
  0% { box-shadow: 0 0 0 0 rgba(10, 122, 63, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(10, 122, 63, 0); }
  100% { box-shadow: 0 0 0 0 rgba(10, 122, 63, 0); }
}
.legend .swatch {
  display: inline-block;
  width: 16px;
  height: 4px;
  border-radius: 999px;
  vertical-align: middle;
  margin-right: 8px;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.7);
}
.legend .item {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
  transition: opacity 140ms, transform 140ms;
}
.legend .item:hover { transform: translateY(-1px); }
.legend .item.muted { opacity: 0.32; }
.legend .item.muted .swatch { opacity: 0.4; }

.axis text, .tick text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px; fill: var(--muted);
  letter-spacing: 0.03em;
}
.grid line { stroke: rgba(14,17,22,0.08); stroke-dasharray: 2 4; }

.tooltip {
  position: absolute; pointer-events: none;
  background: linear-gradient(180deg, rgba(14,17,22,0.97) 0%, rgba(28,34,41,0.96) 100%);
  color: var(--paper);
  padding: 12px 15px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.06);
  font-family: 'JetBrains Mono', monospace; font-size: 13px; letter-spacing: 0.02em;
  transform: translate(-50%, calc(-100% - 12px));
  opacity: 0; transition: opacity 120ms, transform 120ms;
  white-space: nowrap; z-index: 10;
  box-shadow: 0 18px 40px rgba(0,0,0,0.24);
}
.tooltip.show { opacity: 1; }
.tooltip b { color: #fff; font-weight: 700; }
.tooltip .tk-row { display: flex; justify-content: space-between; gap: 16px; }
.tooltip .tk-row .k { color: rgba(255,255,255,0.58); }
.tooltip .tk-head {
  margin-bottom: 7px;
  color: rgba(255,255,255,0.62);
  font-size: 12px;
  letter-spacing: 0.05em;
}
.chart-frame svg [data-interactive='1'],
.chart-frame svg .chart-line,
.chart-frame svg rect[fill='transparent'] {
  transition: opacity 140ms ease, transform 140ms ease, filter 140ms ease;
}
.chart-frame svg [data-interactive='1']:hover,
.chart-frame svg .chart-line:hover {
  filter: saturate(1.08);
}

/* ---------- Stat blocks ---------- */
.stat {
  display: flex; flex-direction: column;
}
.stat .num {
  font-family: 'Lato', sans-serif; font-weight: 900;
  font-size: 88px; line-height: 0.95;
  letter-spacing: -0.035em; color: var(--ink);
}
.stat .num.red { color: var(--ostro-red); }
.stat .lbl {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); margin-top: 8px;
}

/* ---------- Reveal (simplified: always visible) ---------- */
.reveal { opacity: 1; transform: none; }

/* ---------- Title slide special ---------- */
.slide.cover {
  background: linear-gradient(155deg, #0E1116 0%, #2E3840 60%, #5B6770 140%);
  color: #fff;
  padding-top: 56px;
  overflow: hidden;
}
.slide.cover .masthead { background: transparent; border-bottom-color: rgba(255,255,255,0.1); color: rgba(255,255,255,0.5); }
.slide.cover .masthead .mast-ticker { color: var(--ink); }
.slide.cover .masthead .mast-ticker .tk {
  background: rgba(255,255,255,0.94);
  border-color: rgba(255,255,255,0.3);
  box-shadow: 0 10px 24px rgba(0,0,0,0.18);
}
.slide.cover .masthead .mast-ticker .tk-label,
.slide.cover .masthead .mast-ticker .tk-value { color: var(--ink); }
.slide.cover h1.slide-title { color: #fff; }
.slide.cover .footnote { color: rgba(255,255,255,0.5); }

/* noise/grain optional */
.grain::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: 0.06; mix-blend-mode: overlay;
}

/* Utility layouts */
.row { display: flex; gap: 24px; }
.col { display: flex; flex-direction: column; gap: 24px; }
.grow { flex: 1; min-width: 0; min-height: 0; }
.center { align-items: center; justify-content: center; }
.between { justify-content: space-between; }

/* Tables (editorial style) */
table.editorial {
  width: 100%; border-collapse: collapse;
  font-size: var(--fs-small); color: var(--ink-2);
}
table.editorial th, table.editorial td {
  padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line);
}
table.editorial th {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted); font-weight: 600;
  border-bottom: 1px solid var(--line-2);
}
table.editorial tr.hl { background: rgba(166,25,46,0.05); }
table.editorial tr:hover { background: rgba(0,0,0,0.02); }
table.editorial td.num { font-family: 'JetBrains Mono', monospace; font-variant-numeric: tabular-nums; }

/* kbd hint */
kbd {
  font-family: 'JetBrains Mono', monospace; font-size: 13px;
  padding: 2px 7px; background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2); border-radius: 4px;
  color: inherit;
}

/* Slide 03 source-link hit-area fix */
#mixDonut,
#mixDonut * {
  pointer-events: none !important;
}