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

:root {
  color-scheme: dark;
  --bg-deep: #05060f;
  --bg-mid: #0c0f22;
  --surface: #121733;
  --surface-2: rgba(255, 255, 255, 0.04);
  --stroke: rgba(255, 255, 255, 0.12);
  --text: #f4f5ff;
  --text-soft: rgba(244, 245, 255, 0.72);
  --accent: #5fe7ff;
  --accent-strong: #7cf6ff;
  --accent-muted: rgba(95, 231, 255, 0.18);
  --magenta-glow: #d97bff;
  --win: #7cfeca;
  --lose: #ff8ab5;
  --tie: #ffe28a;
  --shadow: 0 25px 60px rgba(0, 0, 0, 0.45);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-size: clamp(14px, 1.05vw + 12px, 17px);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "DM Sans", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 20%, rgba(95, 231, 255, 0.08), transparent 45%), radial-gradient(circle at 80% 10%, rgba(217, 123, 255, 0.12), transparent 40%), var(--bg-deep);
  overflow-x: hidden;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.ambient {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 50% 100%, rgba(95, 231, 255, 0.15), transparent 55%);
  opacity: 0.9;
  pointer-events: none;
  z-index: 0;
}

.grain {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120' viewBox='0 0 120 120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.95' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
  opacity: 0.5;
  mix-blend-mode: soft-light;
  pointer-events: none;
  z-index: 1;
}

.arena {
  position: relative;
  z-index: 2;
  max-width: min(940px, 94vw);
  margin: clamp(24px, 5vw, 48px) auto clamp(96px, 14vw, 160px);
  padding: clamp(20px, 4vw, 36px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--stroke);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.05), transparent 52%),
    linear-gradient(to bottom, rgba(12, 15, 35, 0.92), rgba(5, 6, 15, 0.96));
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.arena.is-revealing,
.arena.is-resolving {
  animation: aura var(--transition-fast);
}

@keyframes aura {
  0% {
    box-shadow: var(--shadow);
  }
  100% {
    box-shadow:
      var(--shadow),
      0 0 42px rgba(95, 231, 255, 0.18),
      inset 0 0 58px rgba(217, 123, 255, 0.08);
  }
}

.arena--win #battle-ring {
  animation: uplift 740ms cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes uplift {
  0% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-8px);
  }
  100% {
    transform: translateY(0);
  }
}

.arena--tie #battle-ring {
  animation: nudge var(--transition-fast), nudge-reverse var(--transition-fast) 120ms forwards;
}

@keyframes nudge {
  0%, 100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(-8px);
  }
}

@keyframes nudge-reverse {
  0%, 100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(10px);
  }
}

.arena--lose #battle-ring {
  animation: slump 760ms cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slump {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  55% {
    transform: translateY(6px);
    opacity: 0.9;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

.is-endgame .arena__masthead > *:not(#game-title),
.is-endgame .hud,
.is-endgame .duelist,
.is-endgame .verdict-slot,
.is-endgame .round-actions {
  filter: saturate(0.75);
  opacity: 0.5;
}

.arena__masthead {
  text-align: center;
  margin-bottom: clamp(22px, 5vw, 36px);
}

.arena__badge {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--text-soft);
  margin-bottom: 0.45rem;
}

.arena__title {
  margin: 0;
  font-family: "Syne", "DM Sans", sans-serif;
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: clamp(2rem, 2.6vw + 1.55rem, 3.4rem);
  background: linear-gradient(120deg, var(--accent-strong), var(--text));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.arena__subtitle {
  margin-top: 0.75rem;
  color: var(--text-soft);
  font-size: 0.95rem;
  line-height: 1.5;
}

.shortcuts-capsule {
  margin: 1rem auto 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.45rem 0.85rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--stroke);
  justify-items: start;
}

.shortcuts-capsule__label {
  grid-column: 1 / -1;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.shortcut kbd {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: 0.06rem 0.35rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  margin-right: 0.35rem;
  font-size: 0.78rem;
}

.hud__stripe {
  display: flex;
  justify-content: center;
}

.hud__score {
  min-width: min(440px, 100%);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 1rem 1.2rem;
  border-radius: var(--radius-md);
  background: var(--accent-muted);
  border: 1px solid rgba(95, 231, 255, 0.35);
}

.hud__label {
  color: var(--text-soft);
  font-size: 0.92rem;
}

.hud__value {
  font-family: "Syne", sans-serif;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: clamp(1.85rem, 3vw + 1rem, 2.85rem);
  color: var(--accent-strong);
  text-shadow: 0 0 24px rgba(95, 231, 255, 0.35);
}

.hud__last {
  margin: 1.2rem auto 1.55rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0.85rem;
  align-items: center;
  justify-items: center;
  max-width: min(760px, 100%);
}

.hud__pair {
  margin: 0;
  padding: 0.75rem 1rem;
  text-align: center;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  width: min(240px, 100%);
}

.hud__pair dt {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.hud__pair dd {
  margin: 0.35rem 0 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.hud__divider {
  height: 64px;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.25), transparent);
}

@media (max-width: 640px) {
  .hud__last {
    grid-template-columns: 1fr;
  }

  .hud__divider {
    height: 1px;
    width: min(260px, 80%);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  }
}

.duelist__ring {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: clamp(14px, 3vw, 28px);
  align-items: center;
  justify-items: center;
  transition: opacity var(--transition-fast);
}

@media (max-width: 740px) {
  .duelist__ring {
    grid-template-columns: 1fr;
  }

  .versus {
    rotate: -90deg;
  }
}

.card {
  position: relative;
  width: min(280px, 90vw);
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 70% -10%, rgba(217, 123, 255, 0.18), transparent 62%), rgba(255, 255, 255, 0.02);
  border: 1px solid var(--stroke);
  box-shadow: inset 0 0 42px rgba(95, 231, 255, 0.08);
}

.card__tag {
  position: absolute;
  top: clamp(14px, 3vw, 18px);
  left: clamp(14px, 3vw, 18px);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--text-soft);
}

.card__glyph {
  display: grid;
  place-items: center;
  min-height: 120px;
  margin-top: 0.85rem;
  color: var(--accent-strong);
}

.card__glyph--mystery {
  opacity: 0.65;
}

.pulse-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--magenta-glow), var(--accent-strong));
  box-shadow:
    0 0 0 12px rgba(95, 231, 255, 0.15),
    0 0 40px rgba(217, 123, 255, 0.45);
  animation: pulse-ring 1400ms ease-in-out infinite;
}

@keyframes pulse-ring {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  45% {
    transform: scale(1.08);
    opacity: 0.65;
  }
}

.card.reveal-pop {
  animation: pop 620ms cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes pop {
  0% {
    transform: scale(0.95);
    filter: saturate(80%);
  }
  65% {
    transform: scale(1.035);
    filter: saturate(120%);
  }
  100% {
    transform: scale(1);
    filter: saturate(100%);
  }
}

.card__label {
  margin: 1rem 0 0;
  font-size: 1rem;
  text-align: center;
  color: var(--text-soft);
  font-weight: 600;
}

.versus {
  font-family: "Syne", sans-serif;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.4);
  display: grid;
  gap: 0.3rem;
  font-size: 1.05rem;
  text-orientation: upright;
}

.moves-wrap {
  margin-top: clamp(22px, 4vw, 36px);
  text-align: center;
}

.moves-intro {
  margin-bottom: 0.65rem;
  color: var(--accent);
  font-weight: 600;
}

.moves {
  display: flex;
  gap: clamp(10px, 2vw, 16px);
  flex-wrap: wrap;
  justify-content: center;
}

.move {
  display: grid;
  place-items: center;
  gap: 0.4rem;
  padding: 0.85rem 1.05rem;
  min-width: 140px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
  color: inherit;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast),
    opacity var(--transition-fast);
}

.move__glyph svg {
  display: block;
}

.move svg path,
.move svg circle {
  stroke: none;
}

.move:hover:not(:disabled) {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow:
    0 12px 30px rgba(0, 0, 0, 0.35),
    0 0 24px rgba(95, 231, 255, 0.25);
}

.move:disabled {
  opacity: 0.42;
  cursor: not-allowed;
  transform: none;
}

.verdict-slot {
  position: relative;
  margin-top: clamp(24px, 4vw, 36px);
  text-align: center;
  min-height: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.verdict-slot__muted {
  color: var(--text-soft);
  margin: 0;
  max-width: 48ch;
  line-height: 1.5;
}

.verdict {
  margin: 0;
  font-family: "Syne", sans-serif;
  font-weight: 800;
  font-size: clamp(1.6rem, 4vw + 1rem, 2.95rem);
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.verdict-slot__hint {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.verdict-slot__hint.flash {
  animation: flash-soft 900ms ease;
}

@keyframes flash-soft {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
    color: var(--accent-strong);
  }
}

.verdict--win {
  color: var(--win);
  text-shadow: 0 0 42px rgba(124, 254, 202, 0.45);
}

.verdict--lose {
  color: var(--lose);
  text-shadow: 0 0 38px rgba(255, 138, 181, 0.45);
}

.verdict--tie {
  color: var(--tie);
  text-shadow: 0 0 36px rgba(255, 226, 138, 0.45);
}

.round-actions {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.round-actions--hidden {
  visibility: hidden;
  pointer-events: none;
  opacity: 0;
  height: 0;
  margin: 0;
  overflow: hidden;
}

.cta {
  border-radius: var(--radius-sm);
  border: none;
  padding: 0.85rem 1.65rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.cta--primary {
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  color: #041016;
}

.cta--ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text);
}

.cta:focus-visible {
  outline-offset: 3px;
}

.cta:active {
  transform: translateY(1px);
}

.epilogue {
  position: fixed;
  inset: 0;
  z-index: 9;
  display: grid;
  place-items: center;
  background: rgba(2, 3, 8, 0.78);
  backdrop-filter: blur(10px);
  padding: clamp(16px, 4vw, 32px);
  transition: opacity 320ms ease, visibility 320ms ease;
}

.epilogue--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.epilogue__panel {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(124, 254, 202, 0.35);
  padding: clamp(22px, 4vw, 36px);
  max-width: 520px;
  text-align: center;
  box-shadow:
    var(--shadow),
    0 0 72px rgba(95, 231, 255, 0.25);
}

.epilogue__ribbon {
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 0.35rem;
  color: var(--accent);
  font-weight: 600;
}

.epilogue__title {
  margin: 0;
  font-family: "Syne", sans-serif;
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: clamp(1.8rem, 3vw + 1rem, 2.65rem);
}

.epilogue__score {
  margin: 1rem 0 0.45rem;
  font-size: 1.1rem;
}

.epilogue__score span {
  font-family: "Syne", sans-serif;
  font-weight: 800;
  font-size: 1.85rem;
  color: var(--accent-strong);
}

.epilogue__farewell {
  color: var(--text-soft);
  margin-bottom: 1.65rem;
}

.sr-announce {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}