:root {
  --bg: #1d130d;
  --panel: #2a1c13;
  --line: rgba(255, 255, 255, 0.12);
  --ink: #fff4e0;
  --dim: #d8c3a5;
  --yellow: #ffc527;
  --red: #d7262e;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  display: grid;
  grid-template-rows: auto auto 1fr;
  background: radial-gradient(1200px 600px at 70% 0%, #3a2414, var(--bg));
  color: var(--ink);
  font: 400 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow: hidden;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--yellow); outline-offset: 2px; }

.bar { display: flex; align-items: center; gap: 14px; padding: 10px 16px; background: rgba(0,0,0,.35); border-bottom: 1px solid var(--line); }
.back { font: 600 12px/1 ui-monospace, monospace; color: var(--dim); text-decoration: none; white-space: nowrap; }
.back:hover { color: var(--ink); }
.title { flex: 1; min-width: 0; display: flex; align-items: center; gap: 10px; white-space: nowrap; overflow: hidden; }
.title strong { font-size: 16px; }
.badge { padding: 3px 8px; border-radius: 4px; background: var(--red); font: 800 10px/1 ui-monospace, monospace; letter-spacing: .12em; text-transform: uppercase; }
.sub { color: var(--dim); font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; }
.btn { flex: none; min-height: 32px; padding: 6px 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); color: var(--ink); font: 600 12px/1 ui-monospace, monospace; cursor: pointer; }
.btn:hover { border-color: rgba(255,255,255,.4); }

.steps { display: flex; gap: 22px; margin: 0; padding: 9px 16px; list-style: none; border-bottom: 1px solid var(--line); background: rgba(0,0,0,.2); overflow-x: auto; }
.steps li { flex: none; color: var(--dim); font-size: 13px; white-space: nowrap; }
.steps b { display: inline-grid; place-items: center; width: 20px; height: 20px; margin-right: 6px; border-radius: 50%; background: var(--yellow); color: #2b1a12; font-size: 12px; }
.steps em { color: var(--ink); font-style: normal; font-weight: 700; }
kbd { padding: 0 5px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; background: var(--panel); font: 600 11px/1.6 ui-monospace, monospace; color: var(--ink); }

.stage { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 20px; padding: 16px; min-height: 0; }
h2 { margin: 0 0 8px; font: 800 12px/1.2 ui-monospace, monospace; letter-spacing: .12em; text-transform: uppercase; color: var(--yellow); }
h2 span { margin-left: 6px; font-weight: 500; letter-spacing: 0; text-transform: none; color: var(--dim); }
.phone, .projector { display: grid; grid-template-rows: auto 1fr; min-height: 0; min-width: 0; }

/* Phone: a 390x844 device, scaled to the available height */
.phone__frame { position: relative; overflow: hidden; border: 10px solid #0d0806; border-radius: 34px; box-shadow: 0 20px 60px rgba(0,0,0,.55), inset 0 0 0 1px rgba(255,255,255,.08); background: #000; }
/* Projector: a 1920x1080 picture, scaled to fit */
.projector__frame { position: relative; overflow: hidden; align-self: start; border: 6px solid #0d0806; border-radius: 6px; box-shadow: 0 24px 70px rgba(0,0,0,.6); background: #000; }
.phone__frame iframe, .projector__frame iframe { position: absolute; top: 0; left: 0; border: 0; transform-origin: 0 0; }

@media (max-width: 900px) {
  body { display: block; overflow: auto; }
  .stage { grid-template-columns: 1fr; }
  .phone { justify-items: center; }
  .sub, .badge { display: none; }
  .steps { flex-direction: column; gap: 6px; }
  .steps li { white-space: normal; }
}