/* ============================================================
   SXDemo — connected cross-device demo (pairing + scenario)
   ------------------------------------------------------------
   Pairs a desktop OS and a phone (Mobile OS) over an ephemeral
   WebSocket room (/demo-relay). One scripted scenario runs on
   both; actions on one device drive the other. Pairs with
   connect.js. Reuses the brand vars from guide.css.
   ============================================================ */
:root { --sxd-z: 2147483200; }

/* ── Pairing panel (desktop shows the QR) ── */
.sxd-pair-scrim {
  position: fixed; inset: 0; z-index: var(--sxd-z);
  background: rgba(8,22,26,.72); backdrop-filter: blur(4px);
  display: grid; place-items: center; font-family: var(--sxg-font, 'Geist', sans-serif);
  opacity: 0; transition: opacity .3s; pointer-events: none;
}
.sxd-pair-scrim.sxd-in { opacity: 1; pointer-events: auto; }
.sxd-pair {
  width: min(420px, calc(100vw - 32px)); background: var(--sxg-paper, #fff);
  color: var(--sxg-ink, #10242a); border-radius: 22px; padding: 30px 28px;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,.6); text-align: center;
  transform: translateY(10px) scale(.98); transition: transform .3s;
}
.sxd-pair-scrim.sxd-in .sxd-pair { transform: none; }
.sxd-pair .sxd-eyebrow {
  font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--sxg-accent, #0A7D8F); margin-bottom: 4px;
}
.sxd-pair h2 { font-size: 22px; font-weight: 700; margin: 0 0 6px; letter-spacing: -.01em; }
.sxd-pair p { font-size: 13.5px; line-height: 1.55; color: var(--sxg-muted, #5b7077); margin: 0 0 20px; }
.sxd-qr {
  width: 220px; height: 220px; margin: 0 auto 16px; padding: 12px; background: #fff;
  border-radius: 16px; border: 1px solid var(--sxg-line, #e2eaec); display: grid; place-items: center;
}
.sxd-qr svg { width: 100%; height: 100%; }
.sxd-code {
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 19px; font-weight: 700;
  letter-spacing: .22em; color: var(--sxg-ink, #10242a); margin-bottom: 18px;
}
.sxd-pair .sxd-wait {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600;
  color: var(--sxg-accent, #0A7D8F);
}
.sxd-pair .sxd-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--sxg-accent, #0A7D8F);
  animation: sxd-blink 1.1s ease-in-out infinite;
}
@keyframes sxd-blink { 0%,100% { opacity: .3 } 50% { opacity: 1 } }
.sxd-pair .sxd-links { margin-top: 18px; display: flex; gap: 14px; justify-content: center; }
.sxd-pair .sxd-link {
  background: none; border: none; font: inherit; font-size: 12.5px; color: var(--sxg-muted, #5b7077);
  cursor: pointer; text-decoration: underline; padding: 4px;
}
.sxd-pair .sxd-link:hover { color: var(--sxg-ink, #10242a); }

/* ── "LIVE DEMO · paired" badge ── */
.sxd-badge {
  position: fixed; top: 12px; left: 50%; transform: translateX(-50%) translateY(-150%);
  z-index: var(--sxd-z); display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(90deg, var(--sxg-accent, #0A7D8F), var(--sxg-accent-deep, #075E6B));
  color: #fff; font-family: var(--sxg-font, sans-serif); font-size: 12px; font-weight: 700;
  padding: 7px 14px; border-radius: 999px; box-shadow: 0 8px 22px -8px rgba(0,0,0,.4);
  transition: transform .35s cubic-bezier(.2,1.2,.3,1);
}
.sxd-badge.sxd-in { transform: translateX(-50%); }
.sxd-badge .sxd-live { width: 7px; height: 7px; border-radius: 50%; background: #fff; animation: sxd-blink 1s infinite; }
.sxd-badge button { background: rgba(255,255,255,.2); border: none; color: #fff; border-radius: 6px; font: inherit; font-size: 11px; font-weight: 700; padding: 2px 8px; cursor: pointer; }

/* ── Scenario cue: spotlight + instruction card ── */
.sxd-overlay { position: fixed; inset: 0; z-index: calc(var(--sxd-z) - 5); pointer-events: none; font-family: var(--sxg-font, sans-serif); }
.sxd-overlay.sxd-on { pointer-events: auto; }
.sxd-spot {
  position: absolute; border-radius: 12px; box-shadow: 0 0 0 9999px rgba(8,22,26,.58);
  outline: 3px solid var(--sxg-accent, #0A7D8F); outline-offset: 3px;
  transition: all .4s cubic-bezier(.4,0,.2,1); pointer-events: none;
}
.sxd-spot.sxd-pulse::after {
  content: ""; position: absolute; inset: -3px; border-radius: 14px;
  animation: sxd-pulse 1.6s ease-out infinite;
}
@keyframes sxd-pulse { 0% { box-shadow: 0 0 0 0 rgba(10,125,143,.5) } 100% { box-shadow: 0 0 0 16px rgba(10,125,143,0) } }
.sxd-overlay.sxd-center .sxd-spot { display: none; }
.sxd-overlay.sxd-center::before { content: ""; position: absolute; inset: 0; background: rgba(8,22,26,.58); }

.sxd-cue {
  position: absolute; width: min(340px, calc(100vw - 28px)); background: #ffffff;
  color: var(--sxg-ink, #10242a); border: 1px solid var(--sxg-line, #e2eaec);
  border-radius: 16px; padding: 18px; pointer-events: auto;
  box-shadow: 0 18px 50px -12px rgba(10,36,42,.5); opacity: 0; transform: translateY(6px);
  transition: opacity .25s, transform .25s;
}
[data-theme="dark"] .sxd-cue { background: #14242a; }
.sxd-cue.sxd-in { opacity: 1; transform: none; }
.sxd-overlay.sxd-center .sxd-cue {
  position: fixed; left: 50%; top: 50%; transform: translate(-50%,-46%); width: min(420px, calc(100vw - 28px)); text-align: center;
}
.sxd-overlay.sxd-center .sxd-cue.sxd-in { transform: translate(-50%,-50%); }
.sxd-cue .sxd-side {
  display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 700;
  letter-spacing: .07em; text-transform: uppercase; margin-bottom: 8px;
}
.sxd-cue .sxd-side.sxd-you   { color: var(--sxg-accent, #0A7D8F); }
.sxd-cue .sxd-side.sxd-other { color: var(--sxg-muted, #5b7077); }
.sxd-cue h3 { font-size: 17px; font-weight: 700; margin: 0 0 6px; letter-spacing: -.01em; }
.sxd-cue p { font-size: 13.5px; line-height: 1.55; color: var(--sxg-muted, #5b7077); margin: 0 0 14px; }
.sxd-cue p strong { color: var(--sxg-ink, #10242a); }
.sxd-cue .sxd-cta {
  width: 100%; background: var(--sxg-accent, #0A7D8F); color: #fff; border: none; border-radius: 11px;
  padding: 12px; font: inherit; font-size: 14px; font-weight: 700; cursor: pointer;
  box-shadow: 0 6px 16px -6px var(--sxg-accent, #0A7D8F); transition: background .15s;
}
.sxd-cue .sxd-cta:hover { background: var(--sxg-accent-deep, #075E6B); }
.sxd-cue .sxd-waitline { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 600; color: var(--sxg-muted, #5b7077); }
.sxd-cue .sxd-waitline .sxd-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--sxg-accent, #0A7D8F); animation: sxd-blink 1.1s infinite; }

/* ── Screen-transition flash (animated handoff) ── */
.sxd-flash {
  position: fixed; inset: 0; z-index: calc(var(--sxd-z) + 5); pointer-events: none;
  background: var(--sxg-accent, #0A7D8F); opacity: 0;
}
.sxd-flash.sxd-slide { animation: sxd-slide .55s cubic-bezier(.7,0,.2,1); }
@keyframes sxd-slide {
  0%   { opacity: 0; transform: translateX(-100%); }
  35%  { opacity: .16; transform: translateX(0); }
  100% { opacity: 0; transform: translateX(100%); }
}

/* ── Incoming-item toast (observer side) ── */
.sxd-toast {
  position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%) translateY(140%);
  z-index: calc(var(--sxd-z) + 2); background: var(--sxg-ink, #10242a); color: #fff;
  font-family: var(--sxg-font, sans-serif); font-size: 13.5px; font-weight: 600;
  padding: 12px 18px; border-radius: 13px; box-shadow: 0 14px 36px -10px rgba(0,0,0,.5);
  display: flex; align-items: center; gap: 10px; max-width: min(420px, 90vw);
  transition: transform .4s cubic-bezier(.2,1.2,.3,1);
}
.sxd-toast.sxd-in { transform: translateX(-50%); }
.sxd-toast .sxd-ic { font-size: 18px; }

@media (prefers-reduced-motion: reduce) {
  .sxd-spot, .sxd-cue, .sxd-toast, .sxd-badge, .sxd-pair, .sxd-pair-scrim { transition: none !important; }
  .sxd-spot.sxd-pulse::after, .sxd-flash.sxd-slide { animation: none !important; }
}