@font-face {
  font-family: 'freepixel';
  src: url(https://maxpoletaev.github.io/static/freepixel.ttf) format('truetype');
}

:root {
  --font: 'freepixel', monospace;
  --font-size: 20px;

  --bg: #111;
  --bg-button: #222;
  --bg-button-hover: #2a2a2a;
  --accent: #4d8fff;
  --accent-hover: #6ba6ff;

  --text: #ddd;
  --text-bright: #fff;
  --text-muted: #888;
  --text-dim: #666;
  --text-dimmer: #555;
  --text-faint: #444;

  --border: #444;
  --border-hover: #666;
  --border-dim: #222;

  --label-col: 120px;
  --gap: 14px;
  --row-gap: 16px;
  --form-width: min(700px, 100% - 40px);
}

*, *::before, *::after { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0;
}

body {
  font-family: var(--font);
  font-size: var(--font-size);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer {
  font-size: 18px;
  color: var(--text-dimmer);
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border-dim);
  text-align: center;
}
.footer__link {
  color: var(--text-muted);
  text-decoration: none;
}
.footer__link:hover { 
  color: var(--text-bright); 
}
.footer__sep {
  margin: 0 6px;
}
.footer__legal {
  margin-top: 20px;
  color: var(--text-faint);
  line-height: 1.2;
}

.setup {
  width: var(--form-width);
}
.setup__title {
  font-size: 48px;
  color: var(--text-bright);
  font-weight: bold;
  margin-bottom: 4px;
  line-height: 1;
}
.setup__title-accent {
  color: var(--accent);
}
.setup__title-wasm {
  color: var(--text-dimmer);
  font-size: 0.6em;
}
.setup__desc {
  color: var(--text-bright);
  margin-bottom: 36px;
}
.setup__field {
  display: grid;
  grid-template-columns: var(--label-col) 1fr;
  align-items: baseline;
  gap: var(--gap);
  margin-bottom: var(--row-gap);
}
.setup__label {
  color: var(--text-muted);
  text-align: right;
  padding-top: 2px;
  font-weight: bold;
}
.setup__actions {
  display: grid;
  grid-template-columns: var(--label-col) 1fr;
  gap: var(--gap);
  margin-top: 24px;
}
.setup__submit {
  padding: 6px 24px;
  background: var(--accent);
  color: #000;
  border: none;
  font-family: var(--font);
  font-size: 1.2em;
  letter-spacing: 1px;
  cursor: pointer;
  font-weight: bold;
}
.setup__submit:hover:not(:disabled) { 
  background: var(--accent-hover); 
}
.setup__submit:disabled { 
  background: var(--border-dim); 
  color: var(--text-faint); cursor: not-allowed; 
}

.exe-group {
  display: grid;
  grid-template-columns: var(--label-col) 1fr auto;
  grid-template-rows: auto auto;
  column-gap: var(--gap);
  row-gap: var(--row-gap);
  align-items: center;
  margin-bottom: var(--row-gap);
}
.exe-group__label {
  color: var(--text-muted);
  text-align: right;
  font-weight: bold;
}
.exe-group__bracket {
  grid-column: 3;
  grid-row: 1 / 3;
  align-self: stretch;
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 4px;
  white-space: nowrap;
  color: var(--text-dimmer);
}
.exe-group__bracket::before {
  content: '';
  flex-shrink: 0;
  width: 10px;
  align-self: stretch;
  border-top: 1px solid var(--border);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

input[type="file"] {
  display: block;
  width: 100%;
  font-family: var(--font);
  font-size: var(--font-size);
  color: var(--text);
  cursor: pointer;
}
input[type="file"]::file-selector-button {
  font-family: var(--font);
  font-size: var(--font-size);
  color: var(--text-muted);
  background: var(--bg-button);
  border: 1px solid var(--border);
  padding: 2px 14px;
  margin-right: 12px;
  cursor: pointer;
}
input[type="file"]::file-selector-button:hover {
  background: var(--bg-button-hover);
  border-color: var(--border-hover);
  color: var(--text-bright);
}

.controls {
  font-size: 0.9em;
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid var(--border-dim);
}
.controls__title {
  font-size: 1.4em;
  color: var(--text-bright);
  margin-bottom: 20px;
  font-weight: bold;
}
.controls__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px 0;
}

.binding {
  display: flex;
  gap: 16px;
  align-items: baseline;
}
.binding__key {
  color: var(--text-muted);
  font-weight: bold;
  min-width: 40px;
  text-align: left;
}
.binding__action {
  color: var(--text-bright);
  min-width: 100px;
  text-align: right;
}
.controls__gamepad {
  margin-top: 14px;
  font-size: 1em;
  color: var(--text-dim);
  text-align: center;
}
.controls__gamepad--on {
  color: var(--accent);
}

@media (max-width: 480px) {
  :root {
    --font-size: 20px;
    --gap: 10px;
    --row-gap: 14px;
  }

  body {
    align-items: flex-start;
    padding: 24px 16px 32px;
  }

  .exe-group {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto auto;
  }
  .exe-group__label {
    text-align: left;
  }
  .exe-group__bracket {
    display: none;
  }

  .setup__field {
    grid-template-columns: 1fr;
  }
  .setup__label {
    text-align: left;
  }
  .setup__actions {
    grid-template-columns: 1fr;
  }
  .setup__actions > div:first-child {
    display: none;
  }
  .setup__submit {
    width: 100%;
  }

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

.screen {
  display: none;
  position: fixed;
  inset: 0;
  background: #000;
  align-items: center;
  justify-content: center;
}
.screen__canvas {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}
.screen__fps {
  position: fixed;
  top: 6px;
  right: 8px;
  font-family: var(--font);
  font-size: 20px;
  color: var(--text-bright);
  text-shadow: 0 1px 3px #000;
}