:root {
  color-scheme: dark;
  --bg: #05060f;
  --panel: #11162a;
  --panel-bright: #1d2850;
  --cyan: #48f4ff;
  --green: #7dff77;
  --amber: #ffd166;
  --purple: #c77dff;
  --red: #ff4d6d;
  --text: #e8f7ff;
  --muted: #8ca4c0;
}

* {
  box-sizing: border-box;
}

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

body {
  display: grid;
  place-items: center;
  padding: 16px;
  overflow: auto;
  background:
    radial-gradient(circle at 50% 0%, rgba(72, 244, 255, 0.16), transparent 36rem),
    linear-gradient(180deg, #060814 0%, var(--bg) 100%);
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
}

.shell {
  display: grid;
  gap: 10px;
  width: min(100%, 1100px);
}

.marquee {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  padding-inline: 6px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.tagline {
  margin: 0 0 0.25rem;
  color: var(--muted);
  font-size: 0.75rem;
}

.hud,
.controls {
  border: 1px solid rgba(72, 244, 255, 0.45);
  background: linear-gradient(180deg, rgba(29, 40, 80, 0.86), rgba(12, 16, 34, 0.86));
  box-shadow: 0 0 18px rgba(72, 244, 255, 0.12), inset 0 0 18px rgba(72, 244, 255, 0.08);
}

.hud {
  display: grid;
  grid-template-columns: repeat(4, minmax(88px, 1fr)) minmax(260px, 2fr);
  gap: 8px;
  padding: 10px;
}

.hud__item {
  display: grid;
  gap: 2px;
}

.hud__item span,
.controls {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hud__item strong {
  color: var(--green);
  font-family: Consolas, "Courier New", monospace;
  font-size: 1.1rem;
  text-shadow: 0 0 10px rgba(125, 255, 119, 0.55);
}

.hud-nukes {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 1.2rem;
}

.hud-nuke-icon {
  position: relative;
  display: inline-block;
  width: 10px;
  height: 22px;
  border: 1px solid rgba(232, 247, 255, 0.9);
  border-radius: 50% 50% 42% 42%;
  background: linear-gradient(180deg, #e8f7ff 0%, #aeb9c7 48%, #ff4d6d 49%, #ff4d6d 100%);
  box-shadow: 0 0 9px rgba(255, 77, 109, 0.55);
  transform: rotate(35deg);
}

.hud-nuke-icon::before,
.hud-nuke-icon::after {
  position: absolute;
  bottom: -3px;
  width: 6px;
  height: 8px;
  background: #ff4d6d;
  content: "";
}

.hud-nuke-icon::before {
  left: -5px;
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
}

.hud-nuke-icon::after {
  right: -5px;
  clip-path: polygon(0 0, 100% 100%, 0 100%);
}

.hud__bases {
  display: grid;
  grid-template-columns: repeat(4, minmax(56px, 1fr));
  align-content: center;
  gap: 6px;
  font-family: Consolas, "Courier New", monospace;
  color: var(--amber);
}

.hud__bases span {
  border: 1px solid rgba(255, 209, 102, 0.35);
  padding: 4px 6px;
  text-align: center;
}

.screen-frame {
  display: grid;
  place-items: center;
  min-height: 0;
  border: 2px solid rgba(72, 244, 255, 0.7);
  background: #02030a;
  box-shadow: 0 0 24px rgba(72, 244, 255, 0.25), inset 0 0 30px rgba(72, 244, 255, 0.08);
}

#game-canvas {
  display: block;
  image-rendering: crisp-edges;
  background: #030611;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 22px;
  padding: 8px 12px;
}

.controls p {
  margin: 0;
}

.status-light {
  display: inline-block;
  min-width: 4.5em;
  margin-left: 0.35em;
  color: var(--green);
  font-family: Consolas, "Courier New", monospace;
  text-shadow: 0 0 10px rgba(125, 255, 119, 0.65);
}

.status-light.is-active {
  color: var(--red);
  text-shadow: 0 0 10px rgba(255, 77, 109, 0.8);
}

.audio-toggle {
  border: 1px solid rgba(255, 209, 102, 0.7);
  background: rgba(255, 209, 102, 0.1);
  color: var(--amber);
  cursor: pointer;
  font: inherit;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 0 10px rgba(255, 209, 102, 0.16);
}

.audio-toggle[aria-pressed="true"] {
  color: var(--green);
  border-color: rgba(125, 255, 119, 0.7);
  box-shadow: 0 0 10px rgba(125, 255, 119, 0.22);
}

.built-with {
  display: inline-flex;
  align-items: center;
  justify-self: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  opacity: 0.72;
}

.built-with img {
  width: 24px;
  height: 24px;
}

.built-with a {
  color: var(--muted);
  text-decoration: none;
}

.built-with a:hover,
.built-with a:focus-visible {
  color: var(--cyan);
  text-decoration: underline;
}

@media (max-width: 760px) {
  body {
    padding: 8px;
  }

  .marquee,
  .controls {
    align-items: start;
    flex-direction: column;
  }

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

  .hud__bases {
    grid-column: 1 / -1;
  }
}