/* === NOVA Duel Start Pack (lightweight, responsive, non-breaking) === */
:root{
  --vs-cyan:#00f0ff; --vs-mint:#00ffcc; --vs-blue:#66a6ff;
  --vs-gold:#ffd700; --vs-amber:#ffb000;
}

/* Scope all effects to the duel-selection-container only */
.duel-selection-container{
  position:relative;
  overflow:hidden;
  isolation:isolate;
  background:
    radial-gradient(1200px 600px at 50% 120%, #0a1231 0%, #070e27 45%, #040a1a 75%, #020611 100%);
}

/* subtle starfield */
.duel-selection-container::before{
  content:''; position:absolute; inset:-12%;
  background:
    radial-gradient(2px 2px at 20% 30%, #d1e6ff 50%, transparent 51%) repeat,
    radial-gradient(1px 1px at 60% 70%, #9bc2ff 50%, transparent 51%) repeat,
    radial-gradient(1px 1px at 80% 20%, #ffffff 50%, transparent 51%) repeat;
  background-size: 300px 300px, 240px 240px, 180px 180px;
  animation: novaStarFloat 52s linear infinite;
  opacity:.7; z-index:0; pointer-events:none;
  filter: drop-shadow(0 0 2px rgba(160,200,255,.4));
}

/* slow rotating aurora sweep */
.duel-selection-container::after{
  content:''; position:absolute; inset:-10%;
  background: conic-gradient(from 0deg at 50% -10%, rgba(0,255,255,.06), transparent 20%, rgba(255,0,255,.06) 40%, transparent 60%, rgba(0,255,255,.06) 80%, transparent);
  filter: blur(10px);
  animation: novaSweepSlow 18s linear infinite;
  z-index:1; pointer-events:none;
}

/* Central VS badge (created via JS) */
.nova-vs-badge{
  position:absolute; left:50%; top:50%;
  transform: translate(-50%, -50%);
  width:clamp(72px, 10vw, 140px); height:clamp(72px, 10vw, 140px);
  border-radius:50%;
  display:grid; place-items:center;
  background: radial-gradient(circle at 50% 40%, rgba(0,240,255,.15), rgba(0,0,0,.4) 60%);
  box-shadow: 0 0 24px rgba(0,255,255,.35), inset 0 0 32px rgba(0,255,255,.2);
  z-index:5; pointer-events:none;
}
.nova-vs-badge::before{
  content:"VS"; font-weight:900; letter-spacing:.04em;
  font-size:clamp(22px, 5vw, 40px);
  background: linear-gradient(90deg, var(--vs-cyan), var(--vs-mint), var(--vs-blue));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  filter: drop-shadow(0 0 8px rgba(0,255,255,.65));
}
.nova-vs-badge::after{
  content:''; position:absolute; inset:-6px;
  border-radius:inherit;
  background:
    conic-gradient(from 0deg, rgba(0,255,200,.35), transparent 20%, rgba(0,255,255,.35) 40%, transparent 60%, rgba(0,255,200,.35) 80%, transparent);
  filter: blur(4px);
  animation: novaRingSpin 6s linear infinite;
}

/* Player cards glow-up (without changing structure/classes) */
.duel-selection-container .duel-player-photo{
  box-shadow: 0 0 0 3px rgba(0,230,255,.25), 0 8px 18px rgba(0,0,0,.35);
  transition: transform .35s ease, box-shadow .35s ease, filter .35s ease;
  will-change: transform, filter;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.15), transparent 60%);
}
.duel-selection-container .duel-player-photo:hover{
  transform: translateY(-6px) scale(1.03) rotateZ(-1deg);
  filter: brightness(1.08);
  box-shadow: 0 0 0 3px rgba(0,230,255,.55), 0 14px 28px rgba(0,0,0,.45);
}

/* Player name readability + theme match */
.duel-selection-container .duel-player-name{
  font-weight:900;
  font-size: clamp(.9rem, 2.3vw, 1.15rem);
  background: linear-gradient(90deg, #eaf6ff, #cde8ff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  text-shadow: 0 0 18px rgba(0,180,255,.35);
}

/* Start button: epic but lightweight */
.duel-selection-container .duel-start-button{
  background: linear-gradient(135deg, #1e90ff, #00e5ff);
  color:#001523;
  font-weight:900;
  letter-spacing:.6px;
  border: none;
  box-shadow: 0 8px 22px rgba(0, 200, 255, .35);
  transition: transform .18s ease, box-shadow .18s ease, filter .18s ease;
  position:relative; overflow:hidden;
}
.duel-selection-container .duel-start-button::after{
  content:''; position:absolute; inset:-40%; border-radius:50%;
  background: radial-gradient(circle, rgba(255,255,255,.35), transparent 60%);
  transform: scale(0.2); opacity:.0;
  transition: transform .4s ease, opacity .4s ease;
}
.duel-selection-container .duel-start-button:hover{
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 200, 255, .45);
}
.duel-selection-container .duel-start-button:hover::after{
  transform: scale(1); opacity:.4;
}

/* Bottom info row spacing + subtle float */
.duel-selection-container .duel-bottom-info{
  gap:clamp(8px, 3vw, 24px);
  animation: novaFloat 8s ease-in-out infinite;
}

/* Decorative corner orbs (created once by JS) behind UI */
.nova-corner-orb{ position:absolute; width:clamp(28px,4.5vw,56px); height:clamp(28px,4.5vw,56px); border-radius:50%;
  background:
    radial-gradient(45% 45% at 30% 30%, rgba(255,255,255,.45), rgba(255,255,255,0) 60%),
    radial-gradient(75% 75% at 50% 50%, rgba(110,170,255,.38), rgba(24,60,130,.12) 74%, rgba(0,0,0,0) 76%);
  box-shadow: inset 0 0 18px rgba(120,180,255,.35), 0 6px 18px rgba(0,0,0,.35);
  pointer-events:none; z-index:2; opacity:.8;
  animation: novaOrbBreath 6s ease-in-out infinite;
  mix-blend-mode: screen;
}
.nova-corner-orb.a{ left:10px; top:10px; }
.nova-corner-orb.b{ right:10px; bottom:10px; }

/* Keyframes */
@keyframes novaStarFloat{ to{ transform: translateY(-220px);} }
@keyframes novaSweepSlow{ to{ transform: rotate(1turn);} }
@keyframes novaRingSpin{ to{ transform: rotate(1turn);} }
@keyframes novaFloat{
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-6px); }
}
@keyframes novaOrbBreath{ 0%,100%{ transform: scale(1);} 50%{ transform: scale(1.08);} }

/* Accessibility: respect reduced motion */
@media (prefers-reduced-motion: reduce){
  .duel-selection-container::before,
  .duel-selection-container::after,
  .duel-selection-container .duel-bottom-info,
  .nova-corner-orb,
  .nova-vs-badge::after { animation: none !important; }
}