/* ELA deck engine — base mechanics + brand tokens (Evergreen Mint).
 * Variants layer their own art direction on top; this file owns slide
 * mechanics (fixed 1280x720 canvas, scaling, print) and the token set.
 */
:root {
  --canvas: #F2F6F2;
  --page: #E4EBE5;
  --card: #FFFFFF;
  --forest: #0E8F5C;
  --forest-aa: #0C7A4E;
  --rail: #86BCA1;
  --ink: rgba(16, 35, 26, .93);
  --ink-soft: rgba(16, 35, 26, .70);
  --ink-muted: rgba(16, 35, 26, .50);
  --deep-1: #0B1310;
  --deep-2: #111D17;
  --mint: #5EE6A8;
  --gold: #C9A44C;
  --error: #B23A3A;

  --font-display: 'Bricolage Grotesque', system-ui, sans-serif;
  --font-ui: 'Instrument Sans', system-ui, sans-serif;
  --font-mono: 'Spline Sans Mono', ui-monospace, monospace;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --radius-pill: 999px;
  --radius-card: 22px;
  --radius-button: 12px;
}

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

html, body { height: 100%; }
body {
  font-family: var(--font-ui);
  color: var(--ink);
  background: var(--deep-1);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

img, video { max-width: 100%; display: block; }

.deck { position: fixed; inset: 0; }

.slide {
  position: absolute;
  top: 50%; left: 50%;
  width: 1280px; height: 720px;
  margin: -360px 0 0 -640px;
  transform-origin: center center;
  background: var(--canvas);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transition: opacity .28s var(--ease-out);
}
.slide.is-current { opacity: 1; visibility: visible; }

.deck-chrome {
  position: fixed; left: 0; right: 0; bottom: 0;
  display: flex; align-items: center; gap: 14px;
  padding: 10px 18px;
  z-index: 50;
  color: rgba(255, 255, 255, .55);
  font-family: var(--font-mono);
  font-size: 11px;
  pointer-events: none;
}
.deck-progress {
  flex: 1; height: 2px; border-radius: 2px;
  background: rgba(255, 255, 255, .14);
  overflow: hidden;
}
.deck-progress b { display: block; height: 100%; width: 0; background: var(--mint); transition: width .28s var(--ease-out); }

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

/* ── Print: one slide per landscape page, exact canvas size ─────────── */
@page { size: 1280px 720px; margin: 0; }
@media print {
  body { overflow: visible; background: #fff; }
  .deck { position: static; }
  .slide {
    position: relative;
    top: auto; left: auto; margin: 0;
    transform: none !important;
    opacity: 1; visibility: visible;
    page-break-after: always;
    break-after: page;
  }
  .deck-chrome { display: none; }
  video { display: none; }
}