/* Release affordances; scene rendering and instrument styling stay in their own files. */
#about-dialog { margin:auto; }
body.instrument-frame #instrument-rail #about-toggle { gap:8px; color:#f3f4ef; font:700 13px var(--space-font); letter-spacing:.02em; }
#about-dialog { box-sizing:border-box; width:min(520px, calc(100vw - 32px)); max-height:calc(100dvh - 32px); overflow:auto; padding:36px; border:1px solid #ffffff80; border-radius:24px; background:var(--space-paper, #f3f2e8); color:var(--space-ink, #20231f); box-shadow:0 24px 80px #101b2140; font:15px/1.65 var(--space-font, system-ui); }
#about-dialog::backdrop { background:#101b2155; backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px); }
#about-dialog .about-eyebrow { margin:0 40px 10px 0; color:var(--space-muted, #62655d); font:10px/1.5 var(--space-mono, monospace); letter-spacing:.08em; text-transform:uppercase; }
#about-title { margin:0 0 22px; font-size:32px; line-height:1.1; font-weight:500; letter-spacing:-.04em; }
#about-dialog p { margin-bottom:18px; }
#about-close { position:absolute; right:14px; top:14px; width:44px; height:44px; border:0; border-radius:50%; background:#20231f0a; color:inherit; font:26px/1 system-ui; cursor:pointer; }
.about-links { display:flex; flex-wrap:wrap; gap:10px 20px; padding-top:12px; border-top:1px solid #20231f22; }
.about-links a { display:inline-flex; align-items:center; min-height:44px; color:inherit; font-size:13px; text-underline-offset:4px; }
.about-links a:hover { text-decoration-thickness:2px; }
@media (max-width:540px) { #about-dialog { padding:28px 24px; font-size:14px; } }
body.keyboard-navigation :focus-visible { outline: 2px solid #b4d5c3 !important; outline-offset: 3px; }
body:not(.keyboard-navigation) :focus-visible { outline: none !important; }
body.instrument-frame:not(.keyboard-navigation) #scene-readout #visual-toggle:focus-visible small { text-decoration: none; }
.record-help, #record-status { max-width: 280px; padding: 8px 12px; font: 12px/1.45 system-ui; white-space: normal; color: #ddd; }
#record-status:empty { display:none; }
#fatal-overlay p { max-width: 480px; line-height: 1.6; margin-bottom: 20px; }
#fatal-overlay button { padding: 12px 16px; margin: 6px; border: 1px solid #aaa; border-radius: 6px; background:#252525; color:#fff; font:inherit; cursor:pointer; }
@media (prefers-reduced-motion: reduce) {
  button, .settings-panel, .space-card, .space-close { animation:none !important; transition:none !important; }
}

#playback-controls{position:fixed;z-index:20;right:calc(var(--frame-edge,14px) + 18px);bottom:calc(var(--visual-bottom,60px) + 14px);display:flex;align-items:center;gap:12px;color:#f3f4ef;transition:bottom 400ms cubic-bezier(.22,.75,.22,1)}
#playback-controls button{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:0;border:0;border-radius:0;background:none;color:inherit;font:11px var(--space-font);text-shadow:0 1px 4px #0009;cursor:pointer}
#playback-controls #demo-stop[hidden]{display:none}
#playback-controls #sound-toggle{width:28px}
#sound-toggle svg{filter:drop-shadow(0 1px 2px #0007)}
#sound-toggle .sound-waves,#sound-toggle[aria-pressed="true"] .sound-muted{display:none}
#sound-toggle[aria-pressed="true"] .sound-waves{display:initial}
@media(prefers-reduced-motion:reduce){#playback-controls{transition:none}}