* {
  box-sizing: border-box;
}

html,
body {
  min-width: 240px;
  min-height: 100%;
}

body {
  display: grid;
  min-height: 100svh;
  margin: 0;
  color: var(--game-text);
  background: var(--game-bg);
  font-family: var(--game-font);
}

button,
output {
  font: inherit;
}

button {
  color: inherit;
}

.game {
  display: grid;
  grid-template-rows: auto auto auto minmax(190px, 230px) auto auto auto;
  align-content: space-between;
  gap: 0.5rem;
  width: min(100%, 440px);
  min-height: 100svh;
  margin-inline: auto;
  padding: 0.85rem;
  overflow: hidden;
  background: var(--game-bg);
  border: 1px solid var(--game-divider);
  border-radius: calc(var(--game-radius) * 2);
  box-shadow: var(--game-shadow);
}

.game-header,
.results-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.eyebrow {
  margin: 0 0 0.12rem;
  color: var(--game-accent);
  font-family: var(--game-mono);
  font-size: 0.56rem;
  font-weight: 750;
  letter-spacing: 0.11em;
}

h1,
h2,
p,
dl,
ol {
  margin: 0;
}

h1 {
  font-size: clamp(1.2rem, 5vw, 1.5rem);
  line-height: 1.05;
}

.slot-badge {
  display: grid;
  flex: 0 0 auto;
  gap: 0.05rem;
  min-width: 4.7rem;
  padding: 0.32rem 0.45rem;
  color: var(--game-muted);
  background: var(--game-surface);
  border: 1px solid var(--game-divider);
  border-radius: var(--game-radius);
  font-size: 0.55rem;
  font-weight: 750;
  text-align: center;
  text-transform: uppercase;
}

.slot-badge output {
  color: var(--game-text);
  font-family: var(--game-mono);
  font-size: 0.73rem;
  font-variant-numeric: tabular-nums;
}

.intro {
  color: var(--game-muted);
  font-size: 0.7rem;
  line-height: 1.35;
}

.metrics,
.result-grid {
  display: grid;
  gap: 1px;
  overflow: hidden;
  background: var(--game-divider);
  border: 1px solid var(--game-divider);
  border-radius: var(--game-radius);
}

.metrics {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metrics > div,
.result-grid > div {
  min-width: 0;
  padding: 0.4rem 0.45rem;
  background: var(--game-surface);
  text-align: center;
}

.metrics dt,
.result-grid dt {
  overflow: hidden;
  color: var(--game-muted);
  font-size: 0.58rem;
  font-weight: 750;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.metrics dd,
.result-grid dd {
  margin: 0.08rem 0 0;
  font-family: var(--game-mono);
  font-size: 0.82rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.arena {
  display: grid;
  grid-template-rows: minmax(72px, 1fr) auto auto auto;
  min-height: 190px;
  max-height: 230px;
  overflow: hidden;
  background:
    linear-gradient(var(--game-divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--game-divider) 1px, transparent 1px), var(--game-surface);
  background-size: 24px 24px;
  border: 1px solid var(--game-divider);
  border-radius: var(--game-radius);
}

.scene {
  position: relative;
  min-height: 72px;
  overflow: hidden;
}

.node {
  position: absolute;
  top: 54%;
  z-index: 3;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--game-on-accent);
  background: var(--game-accent);
  border: 2px solid var(--game-accent-strong);
  border-radius: 50%;
  box-shadow: 0 0 0 5px var(--game-accent-soft);
  font-family: var(--game-mono);
  font-size: 0.58rem;
  font-weight: 900;
  transform: translateY(-50%);
}

.terminal {
  left: 7%;
}

.gateway {
  right: 7%;
}

.opponent {
  position: absolute;
  top: 7px;
  left: 50%;
  z-index: 4;
  display: grid;
  width: 32px;
  height: 30px;
  place-items: center;
  color: var(--game-warning);
  background: var(--game-bg);
  border: 1px solid var(--game-warning);
  border-radius: var(--game-radius);
  box-shadow: 0 3px 10px rgb(0 0 0 / 10%);
  font-family: var(--game-mono);
  font-size: 0.72rem;
  font-weight: 900;
  transform: translateX(-50%);
}

.drift-cue {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 5;
  max-width: 42%;
  padding: 0.2rem 0.3rem;
  color: var(--game-danger);
  background: var(--game-bg);
  border: 1px solid var(--game-danger);
  border-radius: 3px;
  opacity: 0;
  font-family: var(--game-mono);
  font-size: 0.46rem;
  font-weight: 800;
  text-align: center;
}

.arena[data-drift='true'] .drift-cue {
  opacity: 1;
}

.opponent i,
.opponent::before,
.opponent::after {
  position: absolute;
  top: 23px;
  left: 50%;
  width: 1px;
  height: 38px;
  background: var(--game-warning);
  content: '';
  transform-origin: top;
}

.opponent::before {
  transform: rotate(54deg);
}

.opponent::after {
  transform: rotate(-54deg);
}

.channel {
  position: absolute;
  top: 54%;
  right: calc(7% + 38px);
  left: calc(7% + 38px);
  height: 48px;
  transform: translateY(-50%);
}

.channel::before {
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--game-divider);
  content: '';
}

.wave {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16%;
  height: 10px;
  opacity: 0;
  border-top: 2px solid var(--game-warning);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.wave-two {
  width: 34%;
  height: 18px;
}

.wave-three {
  width: 54%;
  height: 28px;
}

.arena[data-carrier='weak'] .wave {
  opacity: 0.38;
  border-top-style: dotted;
}

.arena[data-carrier='steady'] .wave {
  opacity: 0.9;
  border-color: var(--game-accent);
}

.arena[data-carrier='broken'] .wave {
  opacity: 0.62;
  border-top-style: dashed;
}

.arena[data-carrier='quiet'] .channel::before,
.arena[data-carrier='broken'] .channel::before {
  background: repeating-linear-gradient(90deg, var(--game-divider) 0 7px, transparent 7px 13px);
}

.return-wave {
  position: absolute;
  top: 57%;
  left: 4%;
  width: 92%;
  height: 0;
  opacity: 0;
  border-top: 2px dashed var(--game-accent);
}

.packet {
  position: absolute;
  top: calc(50% - 5px);
  left: 4%;
  width: 9px;
  height: 9px;
  opacity: 0;
  background: var(--game-accent);
  border-radius: 2px;
}

.packet-two {
  top: calc(50% + 5px);
  animation-delay: 90ms;
}

.arena[data-effect='direct'] .packet,
.arena[data-effect='reflect'] .packet {
  opacity: 1;
  animation: packet-flight 560ms ease-out both;
}

.arena[data-effect='reflect'] .return-wave {
  opacity: 1;
  animation: return-signal 560ms ease-out both;
}

.arena[data-effect='harvest'] .terminal {
  animation: energy-charge 520ms ease-out;
}

.observation-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  min-height: 28px;
  padding: 0.28rem 0.55rem;
  background: color-mix(in srgb, var(--game-bg) 88%, transparent);
  border-top: 1px solid var(--game-divider);
  font-size: 0.56rem;
}

.observation-strip span {
  overflow: hidden;
  color: var(--game-muted);
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.observation-strip strong {
  color: var(--game-text);
  font-family: var(--game-mono);
  font-size: 0.62rem;
  text-align: right;
}

.rhythm {
  display: grid;
  gap: 0.2rem;
  padding: 0.28rem 0.45rem;
  background: var(--game-surface);
  border-top: 1px solid var(--game-divider);
}

.rhythm-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem;
  color: var(--game-muted);
  font-size: 0.5rem;
  line-height: 1.15;
}

.rhythm-heading output {
  flex: 0 0 auto;
  color: var(--game-text);
  font-weight: 800;
}

.rhythm-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 3px;
}

.rhythm-strip i {
  display: flex;
  min-height: 18px;
  align-items: center;
  justify-content: space-between;
  padding: 0.08rem 0.22rem;
  background: linear-gradient(90deg, var(--game-accent-soft) var(--share, 0%), var(--game-bg) 0);
  border: 1px solid var(--game-divider);
  border-radius: 2px;
  font-style: normal;
  font-size: 0.58rem;
}

.rhythm-strip b {
  font: 0.48rem var(--game-mono);
}

.history {
  display: flex;
  min-height: 31px;
  padding: 0.3rem 0.45rem;
  gap: 0.28rem;
  list-style: none;
  background: var(--game-bg);
  border-top: 1px solid var(--game-divider);
}

.history li {
  display: grid;
  flex: 1 1 0;
  min-width: 0;
  place-items: center;
  padding: 0.18rem 0.2rem;
  color: var(--game-muted);
  background: var(--game-surface);
  border: 1px solid var(--game-divider);
  border-radius: 3px;
  font-family: var(--game-mono);
  font-size: 0.51rem;
  font-weight: 750;
  text-align: center;
}

.history li[data-result='success'] {
  color: var(--game-accent-strong);
  border-color: var(--game-accent);
}

.history li[data-result='loss'] {
  color: var(--game-danger);
  border-color: var(--game-danger);
}

.decision {
  display: grid;
  gap: 0.32rem;
}

.decision h2 {
  font-size: 0.66rem;
  line-height: 1.2;
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.36rem;
}

.action-grid[hidden] {
  display: none;
}

.action-grid button,
.restart {
  min-width: 0;
  min-height: 52px;
  padding: 0.42rem 0.32rem;
  background: var(--game-surface);
  border: 1px solid var(--game-divider);
  border-radius: var(--game-radius);
  cursor: pointer;
  touch-action: manipulation;
}

.action-grid button {
  display: grid;
  gap: 0.1rem;
  align-content: center;
  text-align: center;
}

.action-grid button:hover:not(:disabled),
.restart:hover {
  border-color: var(--game-accent);
  box-shadow: inset 0 -2px 0 var(--game-accent);
}

.action-grid button:focus-visible,
.restart:focus-visible {
  outline: 3px solid var(--game-accent);
  outline-offset: 2px;
}

.action-grid button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.action-grid button span {
  overflow-wrap: anywhere;
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1.1;
}

.action-grid button small {
  overflow-wrap: anywhere;
  color: var(--game-muted);
  font-size: 0.54rem;
  line-height: 1.15;
}

.status {
  min-height: 2.45em;
  font-size: 0.68rem;
  font-weight: 650;
  line-height: 1.25;
  text-align: center;
}

.keyboard-help {
  color: var(--game-muted);
  font-size: 0.56rem;
  line-height: 1.25;
  text-align: center;
}

.results {
  display: grid;
  gap: 0.7rem;
  align-self: stretch;
  align-content: center;
  padding: 0.75rem;
  background: var(--game-surface);
  border: 1px solid var(--game-divider);
  border-radius: var(--game-radius);
}

.results[hidden] {
  display: none;
}

.results h2 {
  font-size: 1.05rem;
}

.grade {
  display: grid;
  min-width: 42px;
  height: 42px;
  place-items: center;
  color: var(--game-on-accent);
  background: var(--game-accent);
  border-radius: 50%;
  font-family: var(--game-mono);
  font-size: 0.75rem;
  font-weight: 900;
}

.result-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.results > p {
  color: var(--game-muted);
  font-size: 0.66rem;
  line-height: 1.4;
}

.restart {
  min-height: 44px;
  color: var(--game-on-accent);
  background: var(--game-accent);
  border-color: var(--game-accent-strong);
  font-size: 0.68rem;
  font-weight: 800;
}

.game[data-complete='true'] {
  grid-template-rows: auto auto auto;
  align-content: center;
}

.game[data-complete='true'] .intro,
.game[data-complete='true'] .arena,
.game[data-complete='true'] .decision,
.game[data-complete='true'] .status,
.game[data-complete='true'] .keyboard-help {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

html[data-embed='true'] body {
  background: transparent;
}

html[data-embed='true'] .game {
  min-height: 100%;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

@media (max-width: 330px) {
  .game {
    gap: 0.46rem;
    padding-inline: 0.65rem;
  }

  .intro {
    font-size: 0.61rem;
  }

  .action-grid {
    gap: 0.24rem;
  }

  .action-grid button {
    min-height: 54px;
    padding-inline: 0.18rem;
  }

  .metrics > div,
  .result-grid > div {
    padding-inline: 0.25rem;
  }

  .observation-strip {
    padding-inline: 0.4rem;
  }
}

@media (max-width: 279px) {
  .game {
    gap: 0.4rem;
    padding: 0.65rem 0.5rem;
  }

  .slot-badge {
    min-width: 4.15rem;
  }

  .action-grid button {
    padding-inline: 0.12rem;
  }

  .rhythm-heading {
    font-size: 0.47rem;
  }
}

@media (max-height: 520px) {
  .game {
    grid-template-rows: none;
    align-content: start;
    gap: 0.4rem;
    padding-block: 0.65rem;
  }

  .intro,
  .keyboard-help {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
  }

  .arena {
    min-height: 145px;
    max-height: 190px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .arena[data-carrier='steady'] .wave {
    animation: carrier-breathe 850ms ease-in-out infinite alternate;
  }
  .arena[data-carrier='broken'] .wave {
    animation: carrier-break 720ms steps(2, end) infinite;
  }
  .arena[data-drift='true'] .opponent {
    animation: drift-notice 680ms ease-out;
  }
  @keyframes carrier-breathe {
    to {
      opacity: 0.38;
      transform: translate(-50%, -50%) scaleX(1.15);
    }
  }
  @keyframes carrier-break {
    50% {
      opacity: 0.12;
    }
  }
  @keyframes packet-flight {
    from {
      left: 4%;
    }
    to {
      left: calc(96% - 9px);
    }
  }
  @keyframes return-signal {
    from {
      clip-path: inset(0 100% 0 0);
    }
    to {
      clip-path: inset(0);
    }
  }
  @keyframes energy-charge {
    50% {
      box-shadow: 0 0 0 12px var(--game-accent-soft);
      transform: translateY(-50%) scale(1.08);
    }
  }
  @keyframes drift-notice {
    35% {
      transform: translateX(-50%) rotate(-8deg);
    }
    70% {
      transform: translateX(-50%) rotate(8deg);
    }
  }
}