* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.4 system-ui, sans-serif; background: #111; color: #eee; }
header { padding: 0.6rem 1rem; background: #000; display: flex; align-items: baseline;
         justify-content: space-between; gap: 1rem; }
h1 { font-size: 1rem; margin: 0; font-weight: 600; }
/* Always-visible link to the credits/colophon — reachable from the work, which is
   what CC BY / BY-SA attribution "reasonable to the medium" calls for. */
.credits-link { color: #9af; text-decoration: none; font-size: 12px; white-space: nowrap; flex: none; }
.credits-link:hover { text-decoration: underline; }

/* --- Credits / colophon page (credits.html) --- */
.credits-page { background: #0c0f14; }
.credits-wrap { max-width: 760px; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
.credits-wrap h1 { font-size: 1.6rem; }
.credits-wrap h2 { font-size: 1.05rem; color: #9af; margin: 1.8rem 0 0.5rem; }
.credits-wrap a { color: #9af; }
.credits-wrap .back-link { font-size: 13px; }
.credits-wrap .note { color: #9ab; font-size: 13px; }
.declaration { background: #131a24; border: 1px solid #233; border-radius: 6px;
               padding: 0.8rem 1rem; margin-top: 1rem; }
.credits-list { display: grid; gap: 0.7rem; margin-top: 0.8rem; }
.credit { background: #131820; border: 1px solid #1f2a3a; border-radius: 5px; padding: 0.6rem 0.8rem; }
.credit .title { font-weight: 600; color: #dfe7f2; }
.credit .lic { display: inline-block; margin-top: 0.2rem; font-size: 12px; color: #cbd; }
.credit .lic.missing { color: #f97; }
.credit .src { margin-top: 0.3rem; font-size: 12px; color: #8aa; line-height: 1.5; }
.audio-credits { color: #b9c4d2; font-size: 13px; line-height: 1.6; padding-left: 1.2rem; }
.credits-list .loading, .credits-list .err { color: #9ab; }
.credits-list .err { color: #f97; }
main { display: flex; gap: 1rem; padding: 1rem; flex-wrap: wrap; align-items: flex-start; }
/* Stage stays pinned in view while the right pane scrolls on its own. */
.stage { flex: 1 1 640px; position: sticky; top: 1rem; }
.screen { position: relative; width: 100%; aspect-ratio: 16 / 9; background: #000;
          border-radius: 6px; overflow: hidden; }
/* Two stacked source videos: #vid plays the scrub morphs, #vid-loop the steady-state
   base loop, preloaded during a scrub so landing is a swap (no reload stall). The
   paint canvas (WebGL) composites whichever is active; in the WebGL-less fallback the
   active one is shown via opacity. */
#vid, #vid-loop { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: opacity 0.15s ease; }
/* Right-dream painterly canvas: a WebGL Kuwahara restyle of the LIVE video frames,
   drawn over the base. Edge-preserving, so motion stays as crisp as the source —
   the dream is the same footage, just stylized. The mood grade rides as a CSS
   filter here. Hidden when WebGL is unavailable (CSS fallback shows #vid). */
#paint { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
         pointer-events: none; transition: filter 0.2s ease; }
#tint { position: absolute; inset: 0; pointer-events: none; opacity: 0;
        background: #28425f; mix-blend-mode: multiply;
        transition: opacity 0.2s ease; }
#overlay { position: absolute; inset: 0; width: 100%; height: 100%;
           pointer-events: none; transition: opacity 0.2s ease; }
/* Affect channel — its own layer so its opacity tracks min(left,right), not Left.
   Soft violet glow, distinct from the clinical reticles (the dream leaking in). */
#affect { position: absolute; inset: 0; width: 100%; height: 100%;
          pointer-events: none; transition: opacity 0.35s ease;
          filter: drop-shadow(0 0 0.9px rgba(176, 120, 255, 0.95)); }
.hud-affect { fill: #e3cfff; font: italic 600 3.6px Georgia, "Times New Roman", serif;
              letter-spacing: 0.06px; }
/* Left-brain analytical HUD. Two sensor channels: detection (cyan) + measurement
   (amber). Corner-bracket reticles, translucent label chips, a status tag. */
.hud-reticle { fill: none; stroke-width: 0.6; vector-effect: non-scaling-stroke;
               stroke-linecap: square; }
.hud-reticle.detect { stroke: #6cf; }
.hud-reticle.measure { stroke: #ffc46b; }
.hud-chip-bg { fill-opacity: 0.72; }
.hud-chip-bg.detect { fill: #001722; }
.hud-chip-bg.measure { fill: #1c1200; }
.hud-chip-text { font: 2.4px monospace; letter-spacing: 0.04px; }
.hud-chip-text.detect { fill: #aee6ff; }
.hud-chip-text.measure { fill: #ffd79a; }
.hud-conf { fill: #6cf; opacity: 0.8; }
.hud-status { fill: #8fdcff; font: 2.4px monospace; opacity: 0.9; letter-spacing: 0.15px; }
/* z-index + own compositing layer: the <video> and WebGL <canvas> are GPU-
   composited layers that can paint ABOVE a plain auto-z sibling (Safari/Chrome
   with a real GPU) despite DOM order — so the black cover needs an explicit
   stacking order above them to actually blank the screen. */
.black { position: absolute; inset: 0; background: #000; opacity: 1;
         z-index: 50; transform: translateZ(0); transition: opacity 200ms ease; }
.hidden { display: none; }
/* "Run simulation" — the obvious starting point, shown over the (black) stage once
   media is preloaded. Sits above the black cover (z-index 50). Dismissed when the
   experience begins (the button, or turning Video on directly). */
.run-sim {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  z-index: 60; cursor: pointer; user-select: none;
  padding: 0.85rem 2rem; border: 0; border-radius: 999px;
  font: 600 18px/1 system-ui, sans-serif; letter-spacing: 0.03em;
  color: #04101f; background: linear-gradient(90deg, #4e9cff, #9af);
  box-shadow: 0 4px 24px rgba(78, 156, 255, 0.45);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.run-sim:hover { transform: translate(-50%, -50%) scale(1.04); box-shadow: 0 6px 30px rgba(78, 156, 255, 0.6); }
.run-sim:active { transform: translate(-50%, -50%) scale(0.98); }
/* One-time photosensitivity warning, over the stage (above run-sim's z-60). */
.motion-warning { position: absolute; inset: 0; z-index: 70; display: flex;
  align-items: center; justify-content: center; padding: 1rem;
  background: rgba(2, 4, 10, 0.92); }
.motion-warning.hidden { display: none; }
.mw-card { max-width: 30rem; text-align: center; color: #dfeaff; }
.mw-card h2 { font-size: 1.1rem; margin: 0 0 0.6rem; }
.mw-card p { font-size: 0.95rem; line-height: 1.5; margin: 0 0 1.2rem; color: #c3d2e8; }
/* The Continue button is centered in flow here, not absolutely positioned. */
.mw-card .run-sim { position: static; transform: none; }
.mw-card .run-sim:hover { transform: scale(1.04); }
.mw-card .run-sim:active { transform: scale(0.98); }
/* Stack the two Output toggles (Video / Audio) with a little breathing room. */
.dev-switch + .dev-switch { margin-top: 0.45rem; }
/* Globe + language select on one row (the select no longer goes full-width here). */
.lang-pick { display: flex; align-items: center; gap: 0.4rem; margin: 0.6rem 0 0.2rem; }
.lang-pick select { flex: 1; width: auto; }
/* Live audio status readout (diagnostic) — turns green when actually playing. */
.audio-status { margin-top: 0.5rem; font: 11px/1.4 monospace; color: #9ab; }
.audio-status.playing { color: #4e9; }
.audio-status.blocked { color: #f97; }
.panel { flex: 0 0 280px; display: flex; flex-direction: column; gap: 0.8rem;
         max-height: calc(100vh - 2rem); overflow-y: auto;
         position: sticky; top: 1rem; }
fieldset { border: 1px solid #333; border-radius: 6px; }
legend { color: #9af; padding: 0 0.4rem; }
label { display: block; margin: 0.4rem 0; }
input[type=range], select { width: 100%; }
#readout { background: #000; padding: 0.5rem; border-radius: 4px; font-size: 12px;
           white-space: pre-wrap; max-height: 240px; overflow: auto; }
/* Altitude knob */
.dial-wrap { display: flex; justify-content: center; padding: 0.3rem 0 0.1rem; }
#dial { width: 190px; height: 190px; touch-action: none; cursor: grab; user-select: none; }
#dial:active { cursor: grabbing; }
.dial-rim { fill: #0d1320; stroke: #243352; stroke-width: 1.2; }
.dial-body { fill: #16203200; stroke: #2c3c5c; stroke-width: 1; }
.dial-tick { stroke: #3a4d70; stroke-width: 0.8; }
.dial-label { fill: #b8cfe6; font-size: 6px; font-family: ui-monospace, monospace;
              letter-spacing: 0.2px; cursor: pointer; }
.dial-label:hover { fill: #cde; }
.dial-label.active { fill: #9cf; font-weight: 700; }
.dial-caption { fill: #8fa6c4; font-size: 4.4px; letter-spacing: 1.2px;
                font-family: ui-monospace, monospace; }
.dial-needle { fill: #9cf; }
.dial-needle polygon { filter: drop-shadow(0 0 1px #9cf); }
.dial-hub { fill: #2c3c5c; stroke: #9cf; stroke-width: 0.6; }
.scale-name { display: block; text-align: center; font-size: 12px; color: #cde; }
.hint { margin: 0.3rem 0 0; font-size: 11px; color: #9fb3c8; }
/* Visible keyboard focus for every interactive element (was only on .dev-switch). */
:focus-visible { outline: 2px solid #9af; outline-offset: 2px; }
#dial:focus-visible { outline-offset: 4px; border-radius: 50%; }
/* Screen-reader-only text (announcements, labels): present in the a11y tree, off-screen. */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* --- Dev Mode --- a single switch; all dev controls/data live in #dev-panel below it. */
.dev-switch { display: flex; align-items: center; gap: 0.5rem; cursor: pointer;
              padding: 0.5rem 0.2rem 0.2rem; border-top: 1px solid #222; user-select: none; }
.dev-switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.dev-switch-track { position: relative; width: 34px; height: 18px; border-radius: 9px;
                    background: #2a2a2a; border: 1px solid #444; transition: background 0.15s; }
.dev-switch-thumb { position: absolute; top: 1px; left: 1px; width: 14px; height: 14px;
                    border-radius: 50%; background: #888; transition: transform 0.15s, background 0.15s; }
.dev-switch input:checked + .dev-switch-track { background: #1d3a2a; border-color: #2e6; }
.dev-switch input:checked + .dev-switch-track .dev-switch-thumb { transform: translateX(16px); background: #4e9; }
.dev-switch input:focus-visible + .dev-switch-track { outline: 2px solid #9af; outline-offset: 1px; }
.dev-switch-label { color: #9af; font-weight: 600; letter-spacing: 0.3px; }
/* Audio level dial (0–10): label · slider · value on one row, matching the switch look. */
.audio-level { display: flex; align-items: center; gap: 0.5rem; margin-top: 0.45rem;
               color: #9af; font-weight: 600; letter-spacing: 0.3px; }
.audio-level input[type=range] { flex: 1; width: auto; }
#audio-level-val { font-variant-numeric: tabular-nums; min-width: 1.2em; text-align: right; }
.dev-panel { display: flex; flex-direction: column; gap: 0.8rem; }
/* Beat the generic `.hidden` (defined earlier, equal specificity): two classes
   win, so the panel truly collapses when Dev Mode is off. */
.dev-panel.hidden { display: none; }
.dev-panel legend { color: #4e9; }
.dev-btn { margin-top: 0.5rem; width: 100%; padding: 0.4rem; cursor: pointer;
           background: #182028; color: #cde; border: 1px solid #2c3c5c; border-radius: 4px; }
.dev-btn:hover { background: #20303f; }
.dev-link { display: block; margin-top: 0.4rem; padding: 0.4rem; text-align: center;
            background: #182028; color: #cde; border: 1px solid #2c3c5c; border-radius: 4px;
            text-decoration: none; }
.dev-link:hover { background: #20303f; }
.dev-dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 0.15rem 0.6rem; font-size: 12px; }
.dev-dl dt { color: #789; }
.dev-dl dd { margin: 0; color: #dde; word-break: break-word; }
.dev-dl dd.mem { color: #4e9; }
.dev-dl dd.net { color: #fc6; }
.dev-anno { font-size: 11px; max-height: 220px; overflow: auto;
            font-family: ui-monospace, monospace; }
.dev-anno .anno-row { padding: 0.2rem 0; border-bottom: 1px solid #1d1d1d; }
.dev-anno .anno-key { color: #aee6ff; }
.dev-anno .anno-key.affect { color: #e3cfff; }
.dev-anno .anno-key.measure { color: #ffd79a; }
.dev-anno .anno-meta { color: #678; }
.dev-anno .anno-empty { color: #567; font-style: italic; }

/* "Loading Universe…" splash — shown until all media is preloaded and the
   experience is ready to run smoothly, then faded out. */
#loading {
  position: fixed; inset: 0; z-index: 10000;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(ellipse at center, #0a1230 0%, #02030a 70%);
  color: #cfe3ff; user-select: none;
  transition: opacity 0.6s ease;
}
#loading.done { opacity: 0; pointer-events: none; }
.loading-inner { display: flex; flex-direction: column; align-items: center; gap: 1.1rem; }
.loading-title { font: 600 30px/1.2 system-ui, sans-serif; letter-spacing: 0.04em; }
.loading-dots::after {
  content: ""; animation: loading-dots 1.4s steps(4, end) infinite;
}
@keyframes loading-dots { 0% { content: ""; } 25% { content: "."; } 50% { content: ".."; } 75% { content: "..."; } 100% { content: ""; } }
.loading-bar {
  width: 260px; height: 4px; border-radius: 2px;
  background: rgba(255, 255, 255, 0.12); overflow: hidden;
}
#loading-fill {
  height: 100%; width: 0%; border-radius: 2px;
  background: linear-gradient(90deg, #4e9cff, #9af);
  transition: width 0.25s ease;
}