:root {
  color-scheme: dark;
  --bg: #0d1726;
  --panel: #152537;
  --line: #304357;
  --mint: #99f2d2;
  --muted: #9bb0c4;
  font-family: Arial, sans-serif;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: #edf5fa;
}
button,
select {
  font: inherit;
}
button,
select,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  background: #192d40;
  border: 1px solid var(--line);
  color: #e7f1fa;
  border-radius: 4px;
  font-size: 11px;
  padding: 7px 10px;
  cursor: pointer;
}
button:hover {
  background: #2a4359;
}
button:disabled {
  opacity: 0.4;
  cursor: default;
}
:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}
.shell {
  height: 100vh;
  height: 100dvh;
  max-width: 1160px;
  margin: auto;
  padding: 6px 16px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 0 0 28px;
  border-bottom: 1px solid var(--line);
}
.brand {
  color: var(--mint);
  font-size: 12px;
  font-weight: bold;
  text-decoration: none;
  letter-spacing: 2px;
}
.brand span {
  font-size: 8px;
  color: var(--muted);
  letter-spacing: 1px;
  margin-left: 14px;
}
.intro {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  flex: 0 0 42px;
}
.eyebrow {
  color: var(--mint);
  font-size: 8px;
  font-weight: bold;
  letter-spacing: 1px;
  margin: 0 0 5px;
}
.subtitle {
  font-size: 10px;
  margin: 0;
  color: var(--muted);
}
h1 {
  font-size: 28px;
  letter-spacing: -1px;
  margin: 0;
  white-space: nowrap;
}
h1 span {
  color: #b8afff;
}
.sector {
  text-align: right;
  font: 8px monospace;
  color: var(--muted);
}
.sector strong {
  display: block;
  color: #e4eafb;
  font-size: 10px;
  margin-top: 5px;
}
.game-panel {
  display: flex;
  flex: 1 1 0;
  flex-direction: column;
  min-height: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 9px;
  overflow: hidden;
}
.scoreboard {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr 1fr;
  padding: 8px 16px;
  gap: 15px;
  flex: 0 0 auto;
}
.scoreboard > div {
  border-right: 1px solid var(--line);
}
.scoreboard > div:last-child {
  text-align: right;
  border: 0;
}
.label {
  display: block;
  font: 8px monospace;
  color: var(--muted);
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.scoreboard strong {
  font: bold 21px monospace;
}
.scoreboard small {
  color: var(--muted);
  font-size: 11px;
}
#score {
  color: var(--mint);
}
.arena-stage {
  flex: 1 1 0;
  min-height: 0;
  display: grid;
  place-items: center;
  container-type: size;
  background: #101e30;
}
.arena-wrap {
  position: relative;
  width: min(100cqw, calc(100cqh * 4 / 3));
  aspect-ratio: 4 / 3;
  container: arena / inline-size;
}
canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}
.topline,
.telemetry {
  position: absolute;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  font: 9px monospace;
  letter-spacing: 1px;
  pointer-events: none;
}
.topline {
  top: 14px;
  color: #a8b8dc;
}
.telemetry {
  bottom: 14px;
  color: var(--mint);
}
.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: #09132466;
}
.overlay[hidden] {
  display: none;
}
.briefing {
  max-width: 86%;
  width: 400px;
  padding: 28px;
  text-align: center;
  background: #13253af5;
  border: 1px solid #6e89b26b;
  box-shadow: 7px 7px #08142188;
}
h2 {
  font-size: 38px;
  letter-spacing: -1px;
  line-height: 1.05;
  margin: 16px 0;
}
#overlay-copy {
  font-size: 13px;
  line-height: 1.7;
  color: #bbcede;
}
.primary {
  background: var(--mint);
  color: #143c38;
  border: 0;
  border-radius: 0;
  margin: 20px auto 16px;
  padding: 14px 20px;
  font-size: 11px;
  letter-spacing: 1px;
  font-weight: bold;
  box-shadow: 0 4px #549d8b;
}
.primary span {
  margin-left: 22px;
}
.primary:hover {
  background: #cbffef;
}
.hint {
  font: 7px monospace;
  color: var(--muted);
  margin: 0;
}
.toolbar {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 7px 12px;
  flex: 0 0 auto;
}
.field label {
  display: block;
  font: 8px monospace;
  color: var(--muted);
  margin-bottom: 4px;
}
select {
  color: #e5f0fb;
  background: var(--panel);
  border: 0;
  font-size: 11px;
  max-width: 160px;
}
.actions {
  display: flex;
  gap: 5px;
  margin-left: auto;
}
kbd {
  display: inline-block;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  padding: 2px 3px;
  font: 8px monospace;
  border-radius: 3px;
}
.instructions {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  flex: 0 0 48px;
  gap: 20px;
}
.instructions p {
  margin: 3px 0;
  font-size: 10px;
}
.instructions small {
  font-size: 8px;
  color: var(--muted);
}
.instructions .tip {
  border-left: 2px solid #746da4;
  padding-left: 12px;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.4;
}
footer {
  display: flex;
  justify-content: space-between;
  flex: 0 0 19px;
  border-top: 1px solid var(--line);
  padding-top: 5px;
  font-size: 8px;
  color: #8194b1;
}
footer a {
  color: #adb6d5;
  text-decoration: none;
}
.sr-only {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  overflow: hidden;
  clip-path: inset(50%);
}
.touch-controls {
  display: none;
  position: absolute;
  bottom: 40px;
  left: 12px;
  right: 12px;
  justify-content: space-between;
  pointer-events: none;
}
.touch-controls > div {
  display: flex;
  gap: 8px;
}
.touch-controls button {
  width: 44px;
  height: 44px;
  background: #26425cb8;
  font-size: 20px;
  pointer-events: auto;
  touch-action: none;
  user-select: none;
}
.overlay:not([hidden]) ~ .touch-controls {
  visibility: hidden;
}
.game-panel:fullscreen {
  width: 100%;
  height: 100%;
  border-radius: 0;
}
@media (pointer: coarse) {
  .touch-controls {
    display: flex;
  }
}
@container arena (max-width: 650px) {
  .briefing {
    padding: 14px 20px;
  }
  h2 {
    font-size: 27px;
    margin: 9px 0;
  }
  #overlay-copy {
    font-size: 11px;
    margin: 8px 0;
  }
  .primary {
    padding: 11px 15px;
    margin: 12px auto;
  }
  .topline,
  .telemetry {
    font-size: 7px;
    letter-spacing: 0.3px;
    left: 10px;
    right: 10px;
  }
}
@container arena (max-width: 390px) {
  .briefing {
    padding: 10px 14px;
  }
  h2 {
    font-size: 24px;
  }
  .hint {
    display: none;
  }
  #overlay-copy {
    font-size: 10px;
  }
}
@media (max-width: 650px) {
  .shell {
    padding: 5px 8px;
  }
  .intro {
    gap: 6px;
    flex-basis: 52px;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  }
  h1 {
    font-size: clamp(16px, 4.8vw, 21px);
  }
  .intro .eyebrow {
    font-size: 6px;
    letter-spacing: 0.2px;
  }
  .subtitle,
  .sector,
  .sector strong {
    font-size: 7px;
  }
  .scoreboard {
    gap: 5px;
    padding: 7px 8px;
  }
  .scoreboard strong {
    font-size: 15px;
  }
  .label {
    font-size: 7px;
    letter-spacing: 0;
  }
  .toolbar {
    gap: 8px;
    flex-wrap: wrap;
  }
  .actions {
    margin-left: auto;
  }
  .instructions {
    flex-basis: 70px;
    gap: 8px;
  }
  .instructions p {
    font-size: 8px;
  }
  .instructions .tip {
    font-size: 8px;
    padding-left: 6px;
  }
  footer {
    font-size: 7px;
  }
}

.field input {
  width: 65px;
  font:
    11px Arial,
    sans-serif;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 4px;
  color: #e5f0fb;
  background: var(--panel);
}
.field input:disabled {
  opacity: 0.4;
}