:root {
  color-scheme: dark;
  --bg: #030403;
  --panel: #0d1210;
  --line: #1a6829;
  --line-bright: #29e654;
  --text: #effbf0;
  --muted: #9db5a2;
  --red: #ff1515;
  --green: #24f52f;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  overflow-x: hidden;
  background:
    radial-gradient(circle at 50% 0%, rgba(34, 126, 54, 0.22), transparent 24rem),
    linear-gradient(180deg, #050705 0%, #020302 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-touch-callout: none;
  user-select: none;
}

button,
input {
  font: inherit;
}

[hidden] {
  display: none !important;
}

.app {
  width: 100%;
  min-height: 100svh;
}

.home-screen,
.game-shell {
  min-height: 100svh;
  width: min(100%, 720px);
  margin: 0 auto;
}

.home-screen {
  display: grid;
  place-items: center;
  padding: 20px;
}

.home-panel {
  width: min(100%, 430px);
  display: grid;
  gap: 24px;
  padding: 24px;
  border: 1px solid rgba(61, 221, 89, 0.35);
  border-radius: 8px;
  background: rgba(12, 17, 15, 0.94);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.46);
}

.brand {
  display: grid;
  grid-template-columns: 42px 1fr 42px;
  align-items: center;
  gap: 12px;
  text-align: center;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 9vw, 3.2rem);
  line-height: 1;
  letter-spacing: 0;
}

.brand-orb,
.status-orb,
#turnOrb {
  display: block;
  border-radius: 999px;
}

.brand-orb {
  width: 42px;
  height: 42px;
  animation: floatOrb 1.8s ease-in-out infinite;
}

.green-orb {
  animation-delay: -0.9s;
}

.red-orb,
.player-label.red .status-orb {
  background: radial-gradient(circle at 44% 42%, #ff1f1f, #9a0000 72%, #260000 100%);
}

.green-orb,
.player-label.green .status-orb {
  background: radial-gradient(circle at 44% 42%, #29f637, #087a12 72%, #001f05 100%);
}

.fill-control {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  color: var(--muted);
  font-size: 1rem;
}

.fill-control strong {
  color: var(--text);
  font-size: 1.35rem;
}

.fill-control input {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--line-bright);
}

.option-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 0;
  padding: 0;
  border: 0;
}

.difficulty-group {
  grid-template-columns: repeat(3, 1fr);
}

.difficulty-group.is-muted {
  opacity: 0.48;
}

.option-group legend {
  grid-column: 1 / -1;
  margin: 0 0 2px;
  color: var(--muted);
  font-size: 0.95rem;
}

.option-group label {
  position: relative;
  min-height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(83, 210, 105, 0.28);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
  color: var(--text);
  cursor: pointer;
}

.option-group input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.option-group label:has(input:checked) {
  border-color: rgba(41, 230, 84, 0.85);
  background: rgba(41, 230, 84, 0.18);
  box-shadow: inset 0 0 0 1px rgba(41, 230, 84, 0.22);
}

.play-button,
.winner button {
  min-height: 48px;
  border: 1px solid rgba(83, 210, 105, 0.42);
  border-radius: 8px;
  color: var(--text);
  background: #173922;
  cursor: pointer;
}

.play-button {
  font-size: 1.1rem;
  font-weight: 700;
}

.play-button:active,
.winner button:active {
  transform: translateY(1px);
}

.game-shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 8px;
  padding: 8px;
}

.game-hud {
  min-height: 66px;
  display: grid;
  grid-template-rows: 42px 10px;
  gap: 7px;
  padding: 8px 9px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(8, 12, 10, 0.74);
}

body.theme-white {
  --text: #0c120e;
  --muted: #405449;
  background: linear-gradient(180deg, #f7fff8 0%, #dfeee3 100%);
}

body.theme-white .home-panel {
  border-color: rgba(16, 111, 39, 0.28);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 24px 70px rgba(37, 75, 48, 0.18);
}

body.theme-white .play-button,
body.theme-white .winner button {
  color: #f7fff8;
  background: #176129;
}

body.theme-white .game-hud {
  background: rgba(248, 255, 250, 0.94);
  border-color: rgba(16, 111, 39, 0.16);
}

body.theme-white .board-wrap {
  background: #f8fff9;
}

body.theme-white .balance-track {
  background:
    linear-gradient(90deg, rgba(255, 21, 21, 0.16), rgba(20, 45, 27, 0.1) 50%, rgba(36, 245, 47, 0.18)),
    rgba(18, 48, 26, 0.12);
}

.hud-top {
  min-width: 0;
  display: grid;
  grid-template-columns: 1fr 50px 1fr;
  align-items: center;
  gap: 8px;
}

.player-label {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: clamp(0.88rem, 3.4vw, 1rem);
}

.player-label.green {
  justify-content: flex-end;
}

.player-label strong {
  font-size: clamp(1rem, 4vw, 1.25rem);
}

.player-label.red strong {
  color: #ff4a4a;
}

.player-label.green strong {
  color: #59ff66;
}

.status-orb {
  width: 18px;
  height: 18px;
}

.balance-track {
  position: relative;
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background:
    linear-gradient(90deg, rgba(255, 21, 21, 0.18), rgba(255, 255, 255, 0.12) 50%, rgba(36, 245, 47, 0.18)),
    rgba(255, 255, 255, 0.08);
}

.balance-track span {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 0%;
  transition: width 220ms ease;
}

.red-fill {
  left: 0;
  border-radius: 999px 0 0 999px;
  background: linear-gradient(90deg, #8f0000, #ff2626);
}

.green-fill {
  right: 0;
  background: linear-gradient(90deg, #28f637, #06790f);
  border-radius: 0 999px 999px 0;
}

.turn-indicator {
  height: 42px;
  display: grid;
  place-items: center;
}

#turnOrb {
  width: 34px;
  height: 34px;
  background: radial-gradient(circle at 44% 42%, var(--turn-bright), var(--turn-color) 72%, #070707 100%);
  box-shadow: 0 0 0 0 var(--turn-glow);
  animation: turnPulse 1.05s ease-out infinite;
}

.board-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 0;
  overflow: hidden;
  border: 1px solid rgba(46, 239, 89, 0.45);
  border-radius: 8px;
  background: #020302;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  touch-action: none;
  box-shadow:
    inset 0 0 28px rgba(39, 239, 82, 0.08),
    0 18px 50px rgba(0, 0, 0, 0.42);
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: pointer;
  outline: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.winner {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
  background: rgba(2, 3, 2, 0.68);
  backdrop-filter: blur(4px);
}

.winner strong {
  font-size: clamp(2rem, 11vw, 4rem);
  text-shadow: 0 0 24px currentColor;
}

.winner button {
  min-width: 180px;
  padding: 0 16px;
}

@keyframes turnPulse {
  0% {
    transform: scale(0.92);
    box-shadow: 0 0 0 0 var(--turn-glow);
  }
  70% {
    transform: scale(1.04);
    box-shadow: 0 0 0 14px rgba(255, 255, 255, 0);
  }
  100% {
    transform: scale(0.92);
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
  }
}

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

@media (max-width: 430px) {
  html,
  body {
    height: 100%;
    overscroll-behavior: none;
  }

  .home-panel {
    padding: 20px;
  }

  .brand {
    grid-template-columns: 34px 1fr 34px;
  }

  .brand-orb {
    width: 34px;
    height: 34px;
  }

  .game-shell {
    width: 100vw;
    min-height: 100svh;
    height: 100svh;
    padding: 0;
    gap: 0;
  }

  .game-hud {
    min-height: 62px;
    grid-template-rows: 38px 9px;
    gap: 6px;
    padding: 7px 8px;
    border: 0;
    border-radius: 0;
    background: rgba(5, 8, 6, 0.92);
  }

  body.theme-white .game-hud {
    background: rgba(248, 255, 250, 0.96);
  }

  .hud-top {
    grid-template-columns: 1fr 42px 1fr;
    gap: 5px;
  }

  .player-label {
    gap: 5px;
  }

  .status-orb {
    width: 15px;
    height: 15px;
  }

  #turnOrb {
    width: 30px;
    height: 30px;
  }

  .board-wrap {
    border: 0;
    border-radius: 0;
    box-shadow: inset 0 0 30px rgba(39, 239, 82, 0.08);
  }
}