:root {
  --bg: #0c0d0e;
  --panel: #141618;
  --line: #24272b;
  --text: #d8dcd9;
  --muted: #8a918d;
  --accent: #55ffff;   /* VGA bright cyan */
  --ok: #55ff55;       /* VGA bright green */
  --warn: #ffff55;
  --bad: #ff5555;
  --vga-bg: #000;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --vga-font: "VT323", "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 var(--mono);
  -webkit-font-smoothing: antialiased;
}

code { font-family: var(--mono); color: var(--accent); font-size: 0.95em; }

.top, main, footer { width: min(1080px, 100% - 32px); margin-inline: auto; }

.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 0 18px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.mark { font: 44px/1 var(--vga-font); color: #fff; letter-spacing: 0.02em; }
.tag { color: var(--muted); font-size: 13px; }

.status { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.dot.booting { background: var(--warn); }
.dot.shell { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.dot.halted { background: var(--bad); box-shadow: 0 0 8px var(--bad); }

/* ---- the monitor ---------------------------------------------------------- */

.bezel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: clamp(8px, 2vw, 18px);
}

.screen {
  position: relative;
  background: var(--vga-bg);
  border-radius: 4px;
  overflow: hidden;
  cursor: text;
  outline: none;
}
.screen:focus-visible, .screen.focused { box-shadow: 0 0 0 1px #2e3a3a; }

#vga {
  margin: 0;
  padding: 0.6em 0.8em;
  font-family: var(--vga-font);
  font-size: 20px;          /* app.js fits this to 80 columns */
  line-height: 1;
  white-space: pre;
  color: #fff;
  user-select: text;
}
#vga .cur { animation: blink 1.06s steps(1) infinite; border-bottom: 0.12em solid #fff; }
@keyframes blink { 50% { border-bottom-color: transparent; } }
@media (prefers-reduced-motion: reduce) { #vga .cur { animation: none; } }

#kbd {
  position: absolute;
  opacity: 0;
  left: 0; top: 0;
  width: 1px; height: 1px;
  border: 0; padding: 0;
  resize: none;
  pointer-events: none;
}

.halt {
  position: absolute;
  inset: auto 12px 12px auto;
  display: flex;
  align-items: center;
  gap: 12px;
  background: #1a0000;
  border: 1px solid #5a1a1a;
  border-radius: 6px;
  padding: 8px 10px 8px 14px;
  font-size: 13px;
}
.halt[hidden] { display: none; }
.halt p { margin: 0; color: var(--bad); }

/* ---- controls --------------------------------------------------------------- */

.controls {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-top: 14px;
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; }

button {
  font: 12.5px/1 var(--mono);
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 7px 10px;
  cursor: pointer;
  transition: border-color 120ms, color 120ms, background 120ms;
}
button:hover { border-color: #3c4248; color: #fff; }
button:focus-visible { outline: 1px solid var(--accent); outline-offset: 1px; }
button:disabled { opacity: 0.4; cursor: default; }
.chips button { color: var(--accent); }
.reset, .halt button { color: var(--bad); border-color: #3a2222; }
.reset:hover, .halt button:hover { border-color: var(--bad); color: #fff; background: #2a0f0f; }

.note { color: var(--muted); max-width: 78ch; margin: 18px 0 0; font-size: 13px; }

/* ---- screenshots ------------------------------------------------------------- */

.shots { margin-top: 56px; }
.shots h2 { font: 30px/1.1 var(--vga-font); color: #fff; margin: 0; font-weight: 400; }
.sub { color: var(--muted); margin: 6px 0 18px; font-size: 13px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 14px; }
figure { margin: 0; }
figure a { display: block; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: #000; }
figure a:hover { border-color: #3c4248; }
figure img { display: block; width: 100%; height: auto; image-rendering: pixelated; }
figcaption { color: var(--muted); font-size: 12.5px; margin-top: 6px; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12.5px;
  border-top: 1px solid var(--line);
  margin-top: 56px;
  padding: 18px 0 32px;
}

@media (max-width: 640px) {
  .mark { font-size: 36px; }
  .controls { flex-direction: column; }
}