/* Signal Run is self-contained so this folder can be moved or removed. */
:root {
  color-scheme: dark;
  --ink: #f2f6f3;
  --muted: #93a29d;
  --panel: rgba(8, 16, 15, 0.78);
  --line: rgba(227, 241, 235, 0.18);
  --signal: #71e2b8;
  --signal-strong: #a9f4d6;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  background: #08100f;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

.game-shell,
#game-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
}

#game-canvas {
  display: block;
  touch-action: none;
}

.game-header {
  position: fixed;
  z-index: 4;
  top: 0;
  left: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  min-height: 72px;
  padding: max(16px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) 12px max(18px, env(safe-area-inset-left));
  background: linear-gradient(to bottom, rgba(3, 9, 8, 0.82), transparent);
}

.back-link,
.icon-button {
  color: var(--muted);
}

.back-link {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 8px;
  min-height: 40px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
}

.back-link:hover,
.back-link:focus-visible,
.icon-button:hover,
.icon-button:focus-visible {
  color: var(--ink);
}

.game-title {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 15px;
  font-weight: 800;
}

.game-title__mark {
  width: 10px;
  height: 10px;
  border: 2px solid var(--signal);
  transform: rotate(45deg);
  box-shadow: 0 0 14px rgba(113, 226, 184, 0.75);
}

.icon-button {
  justify-self: end;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  cursor: pointer;
  font-size: 17px;
  font-weight: 800;
}

.icon-button:disabled {
  visibility: hidden;
}

.hud {
  position: fixed;
  z-index: 3;
  top: 78px;
  left: 50%;
  display: flex;
  justify-content: space-between;
  width: min(620px, calc(100% - 36px));
  transform: translateX(-50%);
  pointer-events: none;
}

.hud__item {
  display: flex;
  flex-direction: column;
  min-width: 88px;
}

.hud__item--right {
  align-items: flex-end;
}

.hud__label {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.hud strong {
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  line-height: 1.2;
}

.overlay {
  position: fixed;
  z-index: 6;
  inset: 0;
  display: flex;
  visibility: hidden;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 100px 24px 80px;
  background: rgba(3, 9, 8, 0.7);
  opacity: 0;
  text-align: center;
  transition: opacity 180ms ease, visibility 180ms ease;
}

.overlay.is-visible {
  visibility: visible;
  opacity: 1;
}

.overlay h1,
.overlay h2 {
  max-width: 700px;
  margin: 4px 0 12px;
  font-size: clamp(46px, 10vw, 92px);
  line-height: 0.95;
  letter-spacing: 0;
}

.overlay h2 {
  font-size: clamp(40px, 8vw, 72px);
}

.overlay p {
  max-width: 480px;
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 16px;
}

.overlay p strong {
  color: var(--ink);
}

.overlay .overline {
  margin-bottom: 10px;
  color: var(--signal);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.primary-button {
  min-width: 164px;
  min-height: 48px;
  border: 0;
  border-radius: 6px;
  padding: 0 22px;
  background: var(--signal);
  color: #07110e;
  cursor: pointer;
  font-weight: 850;
}

.primary-button:hover,
.primary-button:focus-visible {
  background: var(--signal-strong);
}

.overlay .control-hint {
  margin: 22px 0 0;
  font-size: 13px;
}

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  min-height: 25px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--ink);
  font: inherit;
  font-weight: 800;
}

.touch-controls {
  position: fixed;
  z-index: 5;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(20px, env(safe-area-inset-bottom));
  left: max(18px, env(safe-area-inset-left));
  display: none;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
}

.touch-controls button {
  width: 64px;
  height: 56px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font-size: 24px;
  cursor: pointer;
  backdrop-filter: blur(12px);
  pointer-events: auto;
}

.touch-controls button:active {
  border-color: var(--signal);
  background: rgba(113, 226, 184, 0.18);
}

.loading-message {
  position: fixed;
  z-index: 8;
  right: 16px;
  bottom: 16px;
  color: var(--muted);
  font-size: 12px;
}

.loading-message.is-hidden {
  display: none;
}

:focus-visible {
  outline: 3px solid rgba(113, 226, 184, 0.8);
  outline-offset: 3px;
}

@media (hover: none), (pointer: coarse) {
  body.game-is-running .touch-controls {
    display: flex;
  }

  .control-hint {
    display: none;
  }
}

@media (max-width: 520px) {
  .game-header {
    min-height: 64px;
  }

  .game-title {
    font-size: 14px;
  }

  .hud {
    top: 68px;
  }

  .overlay {
    padding-inline: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .overlay {
    transition: none;
  }
}