/* Järvinen promo 4K — elokuvamainen ultra-versio (3840×2160) */
body.promo-4k {
  --bar-h: 12vh;
  --promo-orb-y: 48%;
  --promo-orb-size: min(68vmin, 860px);
}

body.promo-4k #stage {
  animation: promoDrift4k 32s ease-in-out infinite alternate;
}
@keyframes promoDrift4k {
  from { transform: scale(1.03) translate(0, 0) rotate(0deg); }
  to { transform: scale(1.08) translate(-1.4%, -0.8%) rotate(0.3deg); }
}

body.promo-4k #orbWrap {
  filter:
    drop-shadow(0 0 80px rgba(34, 211, 255, 0.28))
    drop-shadow(0 0 160px rgba(34, 211, 255, 0.12))
    drop-shadow(0 0 40px rgba(232, 160, 48, 0.08));
}

body.promo-4k #fi {
  font-size: clamp(2.8rem, 5.2vw, 6.2rem);
  text-shadow: 0 8px 60px rgba(0, 0, 0, 0.75), 0 0 40px var(--soft);
}

body.promo-4k #en {
  font-size: clamp(1.05rem, 1.8vw, 1.75rem);
  letter-spacing: 0.1em;
}

body.promo-4k .bar { height: var(--bar-h); }
body.promo-4k #lower { padding-bottom: calc(var(--bar-h) + 5vh); }
body.promo-4k #prog { bottom: calc(var(--bar-h) - 5px); }

body.promo-4k #vig {
  box-shadow:
    inset 0 0 28vmin rgba(0, 0, 0, 0.75),
    inset 0 0 80px rgba(0, 0, 0, 0.4);
}

body.promo-4k #grain { opacity: 0.045; }

/* Anamorfinen flare */
#flare {
  position: absolute;
  z-index: 3;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background:
    radial-gradient(ellipse 42% 8% at 50% var(--promo-orb-y), var(--flare, #22d3ff), transparent 70%),
    radial-gradient(ellipse 18% 3% at 48% var(--promo-orb-y), rgba(255, 255, 255, 0.35), transparent 80%);
  mix-blend-mode: screen;
  animation: flarePulse 6s ease-in-out infinite alternate;
}
@keyframes flarePulse {
  from { opacity: 0.4; transform: scale(1); }
  to { opacity: 0.65; transform: scale(1.04); }
}

/* Segmentin vaihto — kevyt valoimpulssi */
#flash {
  position: absolute;
  inset: 0;
  z-index: 8;
  pointer-events: none;
  background: radial-gradient(circle at 50% var(--promo-orb-y, 50%), rgba(255, 255, 255, 0.14), transparent 55%);
  opacity: 0;
}
#flash.go { animation: promoFlash 0.65s ease-out; }
@keyframes promoFlash {
  0% { opacity: 0; }
  15% { opacity: 1; }
  100% { opacity: 0; }
}
#chromatic {
  position: absolute;
  inset: 0;
  z-index: 7;
  pointer-events: none;
  opacity: 0.35;
  background:
    radial-gradient(ellipse 90% 70% at 50% var(--promo-orb-y), transparent 55%, rgba(255, 80, 120, 0.04) 72%, transparent 78%),
    radial-gradient(ellipse 90% 70% at 50% var(--promo-orb-y), transparent 55%, rgba(80, 200, 255, 0.05) 74%, transparent 80%);
}

/* Liikkuva pöly */
#dust {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1.5px 1.5px at 85% 15%, rgba(122, 247, 255, 0.6), transparent),
    radial-gradient(1px 1px at 70% 75%, rgba(255, 255, 255, 0.5), transparent),
    radial-gradient(2px 2px at 25% 60%, rgba(255, 180, 58, 0.35), transparent),
    radial-gradient(1px 1px at 45% 35%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 92% 55%, rgba(122, 247, 255, 0.45), transparent);
  animation: dustDrift 18s linear infinite;
}
@keyframes dustDrift {
  from { transform: translate(0, 0); }
  to { transform: translate(-2%, -3%); }
}

/* Skannausviiva */
#scanbeam {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  top: 30%;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--acc), transparent);
  opacity: 0.25;
  animation: scanbeam 8s ease-in-out infinite;
}
@keyframes scanbeam {
  0%, 100% { top: 28%; opacity: 0.1; }
  50% { top: 42%; opacity: 0.35; }
}

@media (min-width: 2560px) {
  body.promo-4k #list li {
    font-size: 1.35rem;
    padding: 12px 22px;
  }
  body.promo-4k .bubble { font-size: 1.45rem; }
}