:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: dark;
  background: #0b0d10;
  color: #f4f7fb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #1b2430 0, #0b0d10 48rem);
}

main {
  max-width: 52rem;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
}

header,
section,
details {
  background: rgba(12, 16, 22, 0.88);
  border: 1px solid #313a46;
  border-radius: 1rem;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.eyebrow {
  margin: 0 0 0.25rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.72;
}

h1 {
  margin-top: 0;
  font-size: clamp(2.3rem, 8vw, 4.8rem);
  line-height: 0.95;
}

button {
  display: block;
  width: 100%;
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid #76859a;
  border-radius: 0.75rem;
  background: #f4f7fb;
  color: #0b0d10;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: 0.55;
}

button:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid currentColor;
  outline-offset: 4px;
}

button[aria-pressed="true"] {
  background: #8fd3ff;
  color: #061018;
}

.settings-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.setting-row {
  display: grid;
  gap: 0.6rem;
  font-weight: 650;
}

.setting-row input[type="checkbox"] {
  width: 1.5rem;
  height: 1.5rem;
}

.setting-range {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.setting-range input {
  grid-column: 1 / -1;
  width: 100%;
}

.setting-range output {
  font-variant-numeric: tabular-nums;
}

.hud {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: 0.75rem;
  margin: 1.25rem 0;
}

.hud div {
  border: 1px solid #313a46;
  border-radius: 0.75rem;
  padding: 0.85rem;
}

.hud dt {
  font-size: 0.8rem;
  opacity: 0.7;
}

.hud dd {
  margin: 0.25rem 0 0;
  font-size: 1.3rem;
  font-weight: 700;
}

.touch-controls {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid #313a46;
}

.touch-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 1rem;
}

.touch-grid button,
.touch-actions button {
  min-height: 3.25rem;
  margin-top: 0;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.touch-forward {
  grid-column: 2;
  grid-row: 1;
}

.touch-left {
  grid-column: 1;
  grid-row: 2;
}

.touch-stop {
  grid-column: 2;
  grid-row: 2;
}

.touch-right {
  grid-column: 3;
  grid-row: 2;
}

.touch-back {
  grid-column: 2;
  grid-row: 3;
}

.touch-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 1rem;
}

@media (max-width: 34rem) {
  main {
    padding: 1.25rem 0.75rem 3rem;
  }

  .touch-actions {
    grid-template-columns: 1fr;
  }
}

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