body.duel-page {
  --room-accent: var(--scoreia-danger);
}

.duel-page .duel-hero {
  position: relative;
  min-height: min(88vh, 820px);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: stretch;
  overflow: hidden;
  border-bottom: 1px solid var(--scoreia-line);
}

.duel-side {
  position: relative;
  padding: 88px 28px 48px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 12px;
}

.duel-side-agent {
  background:
    radial-gradient(120% 80% at 0% 100%, rgba(75, 214, 160, 0.16), transparent 55%),
    #070a09;
}

.duel-side-warden {
  background:
    radial-gradient(120% 80% at 100% 100%, rgba(217, 101, 108, 0.2), transparent 55%),
    #0b0808;
  text-align: right;
}

.duel-side .kicker {
  margin: 0;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--scoreia-muted);
}

.duel-side h2 {
  margin: 0;
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(42px, 7vw, 84px);
  letter-spacing: 0.06em;
  line-height: 0.9;
}

.duel-side-agent h2 { color: var(--scoreia-emerald); }
.duel-side-warden h2 { color: var(--scoreia-danger); }

.duel-side p {
  margin: 0;
  max-width: 36ch;
  color: var(--scoreia-ivory);
}

.duel-side-warden p { margin-left: auto; }

.duel-vs {
  position: relative;
  z-index: 2;
  align-self: center;
  width: 92px;
  height: 92px;
  display: grid;
  place-items: center;
  border: 1px solid var(--scoreia-gold);
  background: #070a09;
  color: var(--scoreia-gold);
  font-family: "Bebas Neue", sans-serif;
  font-size: 42px;
  letter-spacing: 0.08em;
}

.duel-title {
  position: absolute;
  inset: 72px 20px auto;
  z-index: 3;
  text-align: center;
  pointer-events: none;
}

.duel-title .kicker {
  margin: 0 0 8px;
  color: var(--scoreia-gold);
}

.duel-title h1 {
  margin: 0;
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(48px, 10vw, 120px);
  letter-spacing: 0.08em;
  line-height: 0.85;
  color: var(--scoreia-ivory);
}

.duel-title h1 em {
  font-style: normal;
  color: var(--scoreia-danger);
}

.duel-scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    180deg,
    transparent 0 18px,
    rgba(217, 101, 108, 0.05) 18px 19px
  );
  animation: duel-scan 7s linear infinite;
}

@keyframes duel-scan {
  from { transform: translateY(-12%); }
  to { transform: translateY(12%); }
}

.duel-page .wrap {
  max-width: 1080px;
}

.duel-formula {
  margin: 36px 0 8px;
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: 0.04em;
  line-height: 1.05;
  color: var(--scoreia-ivory);
}

.duel-board-block {
  margin: 36px 0;
  padding: 22px;
  border: 1px solid var(--scoreia-line);
  background: var(--scoreia-surface);
}

.duel-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 3px;
  max-width: 420px;
  margin: 0 auto 16px;
}

.duel-cell {
  aspect-ratio: 1;
  background: #101613;
  border: 1px solid #1c2622;
}

.duel-cell.is-heat { background: rgba(217, 101, 108, 0.18); }
.duel-cell.is-heat-2 { background: rgba(217, 101, 108, 0.38); }
.duel-cell.is-heat-3 { background: rgba(209, 168, 90, 0.45); }
.duel-cell.is-camp { outline: 1px solid var(--scoreia-ivory); }
.duel-cell.is-gold { background: var(--scoreia-gold); }
.duel-cell.is-agent { background: var(--scoreia-emerald); }
.duel-cell.is-warden {
  background: var(--scoreia-danger);
  box-shadow: 0 0 0 1px #070a09 inset;
  animation: warden-pulse 1.8s ease-in-out infinite;
}

@keyframes warden-pulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.35); }
}

.duel-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 18px;
  justify-content: center;
  font-size: 13px;
  color: var(--scoreia-muted);
}

.duel-legend i {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 6px;
  vertical-align: -1px;
}

.duel-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 28px 0;
}

.duel-webgpu-preview {
  margin: 36px 0;
  padding: clamp(20px, 4vw, 34px);
  border: 1px solid var(--scoreia-line);
  background:
    linear-gradient(135deg, rgba(75, 214, 160, 0.07), transparent 45%),
    var(--scoreia-surface);
}

.duel-webgpu-preview h2 {
  margin: 6px 0 12px;
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(34px, 5vw, 54px);
  letter-spacing: 0.05em;
  color: var(--scoreia-emerald);
}

.duel-preview-warning {
  padding: 15px 17px;
  border-left: 2px solid var(--scoreia-gold);
  background: rgba(209, 168, 90, 0.06);
  color: var(--scoreia-ivory);
}

.duel-preview-contract {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.duel-preview-contract span {
  padding: 7px 10px;
  border: 1px solid var(--scoreia-line);
  background: rgba(7, 10, 9, 0.58);
  color: var(--scoreia-muted);
  font-size: 12px;
}

.duel-preview-contract strong,
.duel-preview-contract code {
  color: var(--scoreia-ivory);
}

.duel-preview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 20px 0 12px;
}

.duel-preview-actions button:disabled {
  cursor: not-allowed;
  filter: grayscale(0.75);
  opacity: 0.45;
  transform: none;
}

.duel-preview-status {
  min-height: 1.5em;
  margin: 12px 0 0;
  color: var(--scoreia-muted);
}

.duel-webgpu-preview[data-phase="passed"] .duel-preview-status {
  color: var(--scoreia-emerald);
}

.duel-webgpu-preview[data-phase="failed"] .duel-preview-status,
.duel-webgpu-preview[data-phase="paused"] .duel-preview-status {
  color: var(--scoreia-gold);
}

.duel-preview-result {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 20px 0 0;
  border: 1px solid var(--scoreia-line);
  background: var(--scoreia-line);
}

.duel-preview-result[hidden] {
  display: none;
}

.duel-preview-result div {
  min-width: 0;
  padding: 12px;
  background: #0b100e;
}

.duel-preview-result dt {
  color: var(--scoreia-muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.duel-preview-result dd {
  margin: 6px 0 0;
  overflow-wrap: anywhere;
  color: var(--scoreia-ivory);
}

.duel-card {
  padding: 22px;
  border: 1px solid var(--scoreia-line);
  background: var(--scoreia-surface);
}

.duel-card h3 {
  margin: 0 0 10px;
  font-family: "Bebas Neue", sans-serif;
  font-size: 28px;
  letter-spacing: 0.06em;
}

.duel-card.agent h3 { color: var(--scoreia-emerald); }
.duel-card.warden h3 { color: var(--scoreia-danger); }

.duel-card p,
.duel-card li {
  color: var(--scoreia-muted);
}

.duel-card ul {
  margin: 0;
  padding-left: 1.1em;
}

.duel-note {
  padding: 16px 18px;
  border-left: 2px solid var(--scoreia-gold);
  color: var(--scoreia-ivory);
}

.duel-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

@media (max-width: 820px) {
  .duel-page .duel-hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }
  .duel-vs { margin: -18px auto; }
  .duel-title { position: static; padding: 28px 20px 0; }
  .duel-side { padding: 36px 20px; }
  .duel-side-warden,
  .duel-side-warden p { text-align: left; margin-left: 0; }
  .duel-pair { grid-template-columns: 1fr; }
  .duel-preview-result { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .duel-preview-actions button { width: 100%; }
  .duel-preview-result { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .duel-scan,
  .duel-cell.is-warden {
    animation: none !important;
  }

  .duel-page .btn-arcade,
  .duel-page .btn-ghost {
    scroll-behavior: auto;
    transition: none !important;
  }
}