:root {
  color-scheme: dark;
  --black: #020407;
  --ink: #f1f3ec;
  --muted: #8b9297;
  --line: rgb(233 238 228 / 18%);
  --line-bright: rgb(233 238 228 / 38%);
  --orange: #ff8b3d;
  --amber: #ffc36d;
  --cyan: #8fd7d0;
  --danger: #ff5c46;
  --mono: 'SFMono-Regular', 'Cascadia Mono', Consolas, monospace;
  --sans: 'Aptos Display', 'Segoe UI', sans-serif;
  font-family: var(--sans);
  background: var(--black);
  color: var(--ink);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html, body, #app { width: 100%; min-height: 100%; margin: 0; }
body { min-width: 320px; overflow: hidden; background: var(--black); }
button, input { font: inherit; }
button { color: inherit; }
button:focus-visible, input:focus-visible { outline: 1px solid var(--amber); outline-offset: 3px; }

#app { position: relative; height: 100dvh; min-height: 560px; isolation: isolate; overflow: hidden; background: #020407; }
#ray-canvas { position: absolute; inset: 0; display: block; width: 100%; height: 100%; cursor: grab; }
#ray-canvas:active { cursor: grabbing; }

.scanline { position: absolute; z-index: 2; inset: 0; pointer-events: none; opacity: .055; background: repeating-linear-gradient(180deg, transparent 0, transparent 3px, rgb(255 255 255 / 5%) 4px); mix-blend-mode: screen; }
.chrome { transition: opacity 260ms ease, translate 360ms cubic-bezier(.2,.8,.2,1); }
.hud-hidden .chrome, .hud-hidden .reticle { opacity: 0; pointer-events: none; }
.loading-screen { position: absolute; z-index: 20; inset: 0; display: grid; place-content: center; justify-items: center; gap: 1rem; background: var(--black); transition: opacity 520ms ease, visibility 520ms ease; }
.loading-screen.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loading-screen__mark { display: grid; width: 4.5rem; height: 4.5rem; place-items: center; border: 1px solid var(--orange); border-radius: 50%; color: var(--orange); font: 500 2.4rem/1 var(--mono); animation: load-spin 1800ms linear infinite; }
.loading-screen p, .panel-kicker { margin: 0; color: var(--muted); font: 500 .62rem/1.2 var(--mono); letter-spacing: .17em; text-transform: uppercase; }
.loading-screen__track { width: 11rem; height: 1px; overflow: hidden; background: var(--line); }
.loading-screen__track i { display: block; width: 40%; height: 100%; background: var(--orange); animation: load-track 1200ms ease-in-out infinite; }

.topbar { position: absolute; z-index: 5; top: 0; right: 0; left: 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: start; padding: 1.55rem 2rem 3.2rem; background: linear-gradient(180deg, rgb(2 4 7 / 64%), transparent); pointer-events: none; }
.brand-lockup, .topbar__middle, .topbar__actions { pointer-events: auto; }
.brand-lockup__eyebrow { display: block; margin-bottom: .45rem; color: var(--orange); font: 500 .58rem/1 var(--mono); letter-spacing: .16em; }
.brand-lockup h1 { margin: 0; font: 600 clamp(1.35rem, 2.2vw, 2rem)/.92 var(--sans); letter-spacing: .08em; }
.brand-lockup p { margin: .58rem 0 0; color: var(--muted); font: 500 .54rem/1 var(--mono); letter-spacing: .19em; }
.topbar__middle { display: flex; align-items: center; gap: .65rem; margin-top: .25rem; color: var(--muted); font: 500 .58rem/1 var(--mono); letter-spacing: .12em; }
.topbar__middle.is-fault { color: var(--danger); }
.signal-dot, .telemetry__title i, .control-panel__footer i { display: inline-block; width: .4rem; height: .4rem; border-radius: 50%; background: var(--orange); box-shadow: 0 0 14px rgb(255 139 61 / 85%); animation: signal 1500ms ease-in-out infinite; }
.topbar__divider { width: 1.6rem; height: 1px; background: var(--line-bright); }
.topbar__actions { display: flex; justify-content: end; gap: .45rem; }
.icon-button, .close-button { display: grid; width: 2.15rem; height: 2.15rem; place-items: center; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: rgb(2 4 7 / 42%); color: var(--muted); cursor: pointer; transition: border-color 180ms ease, color 180ms ease, background 180ms ease, scale 180ms ease; }
.icon-button:hover, .icon-button:focus-visible, .icon-button.is-active { border-color: var(--orange); color: var(--ink); background: rgb(255 139 61 / 16%); }
.icon-button--accent { border-radius: 2px; color: var(--orange); font-size: 1.15rem; }

.telemetry { position: absolute; z-index: 5; bottom: 7.9rem; left: 2rem; width: 13.5rem; padding: 1rem 0; border-top: 1px solid var(--line-bright); border-bottom: 1px solid var(--line); pointer-events: none; }
.telemetry__title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; color: var(--muted); font: 500 .56rem/1 var(--mono); letter-spacing: .15em; }
.telemetry__title i { width: .32rem; height: .32rem; }
.telemetry dl { display: grid; gap: .68rem; margin: 0; }
.telemetry dl div { display: flex; justify-content: space-between; gap: .8rem; }
.telemetry dt { color: #697279; font: 500 .53rem/1 var(--mono); letter-spacing: .08em; }
.telemetry dd { margin: 0; color: var(--ink); font: 500 .61rem/1 var(--mono); }
.telemetry__footer { display: flex; justify-content: space-between; gap: .5rem; margin-top: 1.1rem; color: var(--orange); font: 500 .5rem/1 var(--mono); letter-spacing: .08em; }

.reticle { position: absolute; z-index: 3; top: 50%; left: 50%; width: 20rem; aspect-ratio: 1; translate: -50% -50%; pointer-events: none; opacity: .48; }
.reticle__ring { position: absolute; inset: 15%; border: 1px solid rgb(255 195 109 / 34%); border-radius: 50%; box-shadow: 0 0 36px rgb(255 139 61 / 12%); }
.reticle__cross { position: absolute; background: rgb(255 195 109 / 38%); }
.reticle__cross--x { top: 50%; right: 0; left: 0; height: 1px; }
.reticle__cross--y { top: 0; bottom: 0; left: 50%; width: 1px; }
.reticle__label { position: absolute; top: 12%; left: 58%; color: rgb(255 195 109 / 78%); font: 500 .49rem/1 var(--mono); white-space: nowrap; }

.bottom-chrome { position: absolute; z-index: 5; right: 2rem; bottom: 1.8rem; left: 2rem; display: flex; align-items: end; justify-content: space-between; gap: 2rem; }
.view-switcher { display: flex; flex-wrap: wrap; gap: .3rem; max-width: 43rem; }
.view-button, .text-button { display: inline-flex; align-items: center; gap: .5rem; min-height: 2rem; padding: .45rem .7rem; border: 1px solid transparent; background: transparent; color: #7e878b; cursor: pointer; font: 500 .57rem/1 var(--mono); letter-spacing: .08em; transition: color 180ms ease, border-color 180ms ease, background 180ms ease; }
.view-button span { display: grid; width: 1.2rem; height: 1.2rem; place-items: center; border: 1px solid currentColor; border-radius: 50%; font-size: .48rem; }
.view-button:hover, .view-button:focus-visible, .view-button.is-active { border-color: var(--line-bright); color: var(--ink); background: rgb(2 4 7 / 54%); }
.view-button.is-active { color: var(--orange); }
.bottom-actions { display: flex; align-items: center; gap: 1rem; }
.text-button { padding-right: .2rem; padding-left: .2rem; color: var(--muted); }
.text-button:hover, .text-button:focus-visible, .text-button.is-active { color: var(--orange); }
.text-button__glyph { font-size: .8rem; }
.debug-readout { color: #687076; font: 500 .52rem/1 var(--mono); letter-spacing: .08em; white-space: nowrap; }

.control-panel { position: absolute; z-index: 10; top: 0; right: 0; bottom: 0; display: flex; width: min(25rem, 100vw); flex-direction: column; translate: 100% 0; border-left: 1px solid var(--line-bright); background: rgb(4 7 10 / 92%); box-shadow: -24px 0 80px rgb(0 0 0 / 36%); backdrop-filter: blur(18px); transition: translate 420ms cubic-bezier(.2,.8,.2,1); }
.panel-open .control-panel { translate: 0; }
.panel-scrim { position: absolute; z-index: 9; inset: 0; display: none; background: rgb(0 0 0 / 45%); }
.panel-open .panel-scrim { display: block; }
.control-panel__head { display: flex; align-items: start; justify-content: space-between; gap: 1rem; padding: 1.55rem 1.5rem 1.2rem; border-bottom: 1px solid var(--line); }
.control-panel h2, .prompt-dialog h2, .webgl-error h2 { margin: .55rem 0 0; font: 600 1.1rem/1 var(--sans); letter-spacing: .07em; }
.close-button { width: 1.9rem; height: 1.9rem; border-radius: 2px; font-size: 1.3rem; line-height: 1; }
.quality-control { display: flex; align-items: end; justify-content: space-between; gap: 1rem; padding: 1.1rem 1.5rem; border-bottom: 1px solid var(--line); }
.quality-control strong { display: block; margin-top: .55rem; color: var(--orange); font: 500 .69rem/1 var(--mono); letter-spacing: .1em; }
.segmented { display: flex; border: 1px solid var(--line-bright); }
.segmented button { min-width: 3.2rem; padding: .52rem .45rem; border: 0; border-right: 1px solid var(--line); background: transparent; color: var(--muted); cursor: pointer; font: 500 .54rem/1 var(--mono); }
.segmented button:last-child { border-right: 0; }
.segmented button:hover, .segmented button:focus-visible, .segmented button.is-active { background: var(--orange); color: var(--black); }
.parameter-scroll { flex: 1; min-height: 0; overflow: auto; scrollbar-color: #445057 transparent; scrollbar-width: thin; }
.parameter-group { padding: 1rem 1.5rem .45rem; }
.parameter-group h3 { display: flex; align-items: center; gap: .58rem; margin: 0 0 .9rem; color: #a3abb0; font: 500 .54rem/1 var(--mono); letter-spacing: .13em; }
.parameter-group h3 span { color: var(--orange); }
.parameter-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .45rem .65rem; align-items: center; padding: .65rem 0; border-top: 1px solid rgb(233 238 228 / 9%); }
.parameter-row__name { display: flex; min-width: 0; align-items: center; gap: .5rem; color: #ccd0ce; font: 400 .64rem/1.1 var(--sans); }
.parameter-row__name b { color: #636e72; font: 500 .5rem/1 var(--mono); }
.parameter-row output { color: var(--orange); font: 500 .57rem/1 var(--mono); white-space: nowrap; }
.parameter-row input { grid-column: 1 / -1; width: 100%; height: 1rem; margin: 0; accent-color: var(--orange); cursor: pointer; }
.control-panel__footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.5rem; border-top: 1px solid var(--line-bright); color: #667176; font: 500 .49rem/1 var(--mono); letter-spacing: .08em; }
.control-panel__footer span { display: inline-flex; align-items: center; gap: .4rem; white-space: nowrap; }
.control-panel__footer i { width: .3rem; height: .3rem; background: var(--cyan); box-shadow: 0 0 10px rgb(143 215 208 / 70%); }
.control-panel__footer button, .prompt-dialog__footer button, .webgl-error button { border: 0; background: transparent; color: var(--orange); cursor: pointer; font: 500 .5rem/1 var(--mono); letter-spacing: .08em; }

.toast { position: absolute; z-index: 30; top: 5.8rem; left: 50%; padding: .6rem .8rem; border: 1px solid var(--line-bright); background: rgb(3 5 8 / 84%); color: var(--amber); translate: -50% -1rem; opacity: 0; pointer-events: none; font: 500 .57rem/1 var(--mono); letter-spacing: .11em; transition: opacity 180ms ease, translate 180ms ease; }
.toast.is-visible { opacity: 1; translate: -50% 0; }

.prompt-dialog { width: min(58rem, calc(100vw - 2rem)); max-height: min(82dvh, 52rem); padding: 0; border: 1px solid var(--line-bright); background: rgb(4 7 10 / 96%); color: var(--ink); box-shadow: 0 30px 120px rgb(0 0 0 / 74%); }
.prompt-dialog::backdrop { background: rgb(0 0 0 / 76%); backdrop-filter: blur(10px); }
.prompt-dialog__header { display: flex; align-items: start; justify-content: space-between; gap: 1rem; padding: 1.5rem; border-bottom: 1px solid var(--line); }
.prompt-dialog pre { max-height: 55dvh; margin: 0; padding: 1.5rem; overflow: auto; color: #d7dbd5; white-space: pre-wrap; font: 400 .72rem/1.8 var(--sans); }
.prompt-dialog__footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.5rem; border-top: 1px solid var(--line); color: var(--muted); font: 500 .54rem/1 var(--mono); letter-spacing: .1em; }
.prompt-dialog__footer b { color: var(--orange); }

.webgl-error { position: absolute; z-index: 40; inset: 0; display: grid; place-content: center; justify-items: center; gap: .9rem; padding: 2rem; background: rgb(2 4 7 / 96%); text-align: center; }
.webgl-error[hidden] { display: none; }
.webgl-error__mark { display: grid; width: 3.5rem; height: 3.5rem; place-items: center; border: 1px solid var(--danger); color: var(--danger); font: 500 1.5rem/1 var(--mono); }
.webgl-error h2 { color: var(--danger); }
.webgl-error p { max-width: 25rem; margin: 0; color: var(--muted); font-size: .75rem; line-height: 1.7; }
.webgl-error button { margin-top: .4rem; padding: .7rem 1rem; border: 1px solid var(--danger); color: var(--danger); }

@keyframes load-spin { to { rotate: 360deg; } }
@keyframes load-track { 0% { translate: -100% 0; } 100% { translate: 350% 0; } }
@keyframes signal { 0%, 100% { opacity: .48; } 50% { opacity: 1; } }

@media (max-width: 900px) {
  .topbar { grid-template-columns: 1fr auto; padding: 1.1rem 1rem; }
  .topbar__middle { position: absolute; top: 4.7rem; left: 1rem; margin: 0; }
  .brand-lockup h1 { font-size: 1.35rem; }
  .telemetry { bottom: 7.1rem; left: 1rem; width: 11.8rem; }
  .bottom-chrome { right: 1rem; bottom: 1rem; left: 1rem; display: grid; gap: .55rem; }
  .view-switcher { flex-wrap: nowrap; max-width: 100%; overflow-x: auto; scrollbar-width: none; }
  .view-switcher::-webkit-scrollbar { display: none; }
  .view-button { flex: 0 0 auto; }
  .bottom-actions { justify-content: space-between; }
  .reticle { width: 16rem; }
}

@media (max-width: 580px) {
  #app { min-height: 520px; }
  .topbar { padding: .9rem .8rem; }
  .brand-lockup__eyebrow { font-size: .48rem; }
  .brand-lockup h1 { font-size: 1.12rem; }
  .brand-lockup p { margin-top: .4rem; font-size: .44rem; }
  .topbar__actions { gap: .25rem; }
  .icon-button { width: 1.85rem; height: 1.85rem; font-size: .78rem; }
  .topbar__middle { top: 4.2rem; left: .8rem; font-size: .49rem; }
  .telemetry { bottom: 8.55rem; left: .8rem; width: 10rem; padding: .65rem 0; }
  .telemetry dl { gap: .45rem; }
  .telemetry dt, .telemetry dd { font-size: .47rem; }
  .telemetry__footer { margin-top: .7rem; font-size: .44rem; }
  .reticle { width: 12.5rem; opacity: .31; }
  .reticle__label { font-size: .41rem; }
  .bottom-chrome { right: .8rem; bottom: .72rem; left: .8rem; }
  .view-button { min-height: 1.8rem; padding: .35rem .48rem; font-size: .48rem; }
  .view-button span { width: 1rem; height: 1rem; font-size: .42rem; }
  .bottom-actions { gap: .5rem; }
  .text-button { font-size: .48rem; }
  .debug-readout { font-size: .44rem; }
  .control-panel { top: auto; width: 100%; height: min(75dvh, 40rem); translate: 0 100%; border-top: 1px solid var(--line-bright); border-left: 0; }
  .panel-open .control-panel { translate: 0; }
  .control-panel__head { padding: 1rem; }
  .quality-control { padding: .8rem 1rem; }
  .parameter-group { padding-right: 1rem; padding-left: 1rem; }
  .control-panel__footer { padding: .8rem 1rem; }
  .prompt-dialog { width: calc(100vw - 1rem); max-height: calc(100dvh - 1rem); }
  .prompt-dialog__header, .prompt-dialog pre, .prompt-dialog__footer { padding: 1rem; }
  .prompt-dialog pre { max-height: 67dvh; font-size: .68rem; line-height: 1.7; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}