:root {
  color-scheme: dark;
  --ink: #0e0f13;
  --panel: #16181e;
  --line: #2b2f39;
  --text: #e4e1d8;
  --muted: #9b9da6;
  --cyan: #55ffff;
  --green: #55ff55;
  --amber: #ffb000;
  --sheen: linear-gradient(135deg, #1d3346 0%, #2e2046 48%, #133836 100%);
  --mono: ui-monospace, "DejaVu Sans Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font: 16px/1.55 var(--sans);
}

a { color: var(--cyan); }
code { font-family: var(--mono); font-size: .92em; color: var(--green); }

.masthead, main, footer {
  width: min(100% - 32px, 752px);
  margin-inline: auto;
}

.masthead { padding: 40px 0 20px; }
.masthead h1 {
  margin: 0;
  font: 700 2.4rem/1.1 var(--mono);
  letter-spacing: -.02em;
}
.lede { margin: 10px 0 0; max-width: 60ch; color: var(--muted); }

/* The machine: one iridescent frame, like a raven's feather, around the VGA screen. */
.bezel {
  position: relative;
  padding: 2px;
  border-radius: 10px;
  background: var(--sheen);
}
.screen {
  display: block;
  border-radius: 8px;
  background: #000;
  overflow: hidden;
  outline: none;
  line-height: 0;
}
.screen:focus-visible { box-shadow: 0 0 0 2px var(--cyan); }
.screen canvas { display: block; width: 100%; height: auto; }
.screen .textmode { white-space: pre; font: 16px/16px var(--mono); line-height: 16px; }
.screen:fullscreen { display: grid; place-items: center; border-radius: 0; }
.screen:fullscreen canvas { width: auto; height: 100vh; max-width: 100vw; object-fit: contain; image-rendering: pixelated; }

.overlay {
  position: absolute;
  inset: 2px;
  margin: 0;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #000;
  color: var(--muted);
  font-family: var(--mono);
}
.overlay[hidden] { display: none; }

.machine-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  margin-top: 12px;
}
.status { margin: 0; color: var(--muted); font-size: .95rem; }
.status::before {
  content: "";
  display: inline-block;
  width: .55em;
  height: .55em;
  margin-right: .5em;
  border-radius: 50%;
  background: var(--amber);
  vertical-align: .08em;
}
.status[data-state="running"]::before { background: var(--green); }
.status[data-state="stopped"]::before { background: #ff5555; }

.controls { display: flex; gap: 8px; }

button {
  font: inherit;
  font-size: .95rem;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
}
button:hover { border-color: #444a58; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.try, .about { margin-top: 40px; }
h2 { margin: 0 0 6px; font-size: 1.15rem; }
.try > p, .about p { margin: 0 0 12px; color: var(--muted); max-width: 65ch; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips button { font-family: var(--mono); color: var(--green); }

.type-form { margin-top: 20px; }
.type-form label { display: block; margin-bottom: 6px; color: var(--muted); font-size: .95rem; }
.type-row { display: flex; gap: 8px; }
.type-row input {
  flex: 1;
  min-width: 0;
  font: 1rem var(--mono);
  color: var(--text);
  background: #000;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
}

footer { margin-top: 48px; padding: 20px 0 40px; border-top: 1px solid var(--line); }
footer p { margin: 0; color: var(--muted); font-size: .9rem; }

.noscript { width: min(100% - 32px, 752px); margin: 24px auto; color: var(--amber); }

@media (max-width: 520px) {
  .masthead { padding-top: 24px; }
  .masthead h1 { font-size: 2rem; }
}