:root {
  color-scheme: dark;
  --paper: #e9edf2;
  --muted: #8b929e;
  --dim: #555c66;
  --line: rgba(255, 255, 255, 0.13);
  --panel: rgba(7, 9, 14, 0.66);
  --accent: #ffb35a;
  --cyan: #9debf5;
  --safe-top: max(22px, env(safe-area-inset-top));
  --safe-side: max(26px, env(safe-area-inset-left));
  font-family: "Helvetica Neue", "DIN Alternate", Inter, Arial, sans-serif;
  background: #020307;
}

* { box-sizing: border-box; }
html, body, #app { width: 100%; height: 100%; margin: 0; overflow: hidden; }
body { background: #020307; color: var(--paper); }
button, input { font: inherit; }
button { color: inherit; }
#viewport { position: fixed; inset: 0; width: 100%; height: 100%; display: block; cursor: grab; touch-action: none; }
#viewport:active { cursor: grabbing; }

.grain { position: fixed; inset: 0; pointer-events: none; opacity: .008; mix-blend-mode: screen; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E"); }
.hud { position: fixed; inset: 0; pointer-events: none; transition: opacity .35s ease; }
.hud.hidden { opacity: 0; }
.hud button, .hud input, .help-dialog { pointer-events: auto; }
.eyebrow { margin: 0; color: var(--muted); font-size: 9px; letter-spacing: .3em; font-weight: 700; }
.glass-panel { background: linear-gradient(135deg, rgba(11,14,20,.76), rgba(3,5,9,.52)); border: 1px solid var(--line); box-shadow: 0 18px 60px rgba(0,0,0,.24), inset 0 1px rgba(255,255,255,.03); backdrop-filter: blur(18px); }
.panel-heading { height: 32px; display: flex; align-items: center; justify-content: space-between; padding: 0 12px; border-bottom: 1px solid var(--line); color: #aeb4bd; font-size: 8px; font-weight: 700; letter-spacing: .18em; }
.panel-heading i { color: #8fc7a4; font-style: normal; }
kbd { font-family: inherit; font-size: 8px; color: var(--muted); border: 1px solid var(--line); border-radius: 2px; padding: 2px 5px; background: rgba(255,255,255,.04); }

.masthead { position: absolute; top: var(--safe-top); left: var(--safe-side); right: var(--safe-side); display: flex; justify-content: space-between; align-items: flex-start; }
.identity { display: flex; align-items: center; gap: 14px; }
.identity h1 { margin: 2px 0 0; font-size: 23px; line-height: 1; letter-spacing: .38em; font-weight: 550; }
.logo-mark { position: relative; width: 39px; height: 39px; border: 1px solid rgba(255,255,255,.34); border-radius: 50%; }
.logo-mark::before, .logo-mark::after, .logo-mark i { content: ""; position: absolute; inset: 7px; border: 1px solid rgba(255,255,255,.28); border-radius: 50%; transform: rotate(62deg) scaleY(.35); }
.logo-mark::after { transform: rotate(-28deg) scaleY(.35); }
.logo-mark i { inset: 15px; border: 0; background: #fff; box-shadow: 0 0 9px #fff; }
.system-status { text-align: right; }
.status-line { font-size: 8px; letter-spacing: .15em; color: var(--muted); }
.status-line i { display: inline-block; width: 5px; height: 5px; margin-right: 5px; border-radius: 50%; background: #79d295; box-shadow: 0 0 9px #79d295; }
.status-line strong { margin-left: 7px; color: #c8ded0; }
.status-chips { margin-top: 9px; display: flex; gap: 5px; justify-content: flex-end; }
.status-chips span { padding: 5px 7px; border: 1px solid var(--line); color: #aab0b9; font-size: 8px; letter-spacing: .12em; background: rgba(0,0,0,.22); }

.reticle { position: absolute; left: 50%; top: 50%; width: 52px; height: 52px; transform: translate(-50%,-50%); opacity: .58; }
.reticle::before, .reticle::after { content: ""; position: absolute; background: rgba(255,255,255,.62); }
.reticle::before { left: 0; right: 0; top: 50%; height: 1px; }
.reticle::after { top: 0; bottom: 0; left: 50%; width: 1px; }
.reticle i { position: absolute; inset: 15px; border: 1px solid rgba(255,255,255,.62); border-radius: 50%; }
.reticle b { position: absolute; inset: 24px; border: 1px solid #fff; border-radius: 50%; box-shadow: 0 0 6px rgba(255,255,255,.8); }
.reticle span { position: absolute; inset: -7px; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; border-left-color: transparent; border-right-color: transparent; }
.coordinate-label { position: absolute; top: 50%; transform: translateY(-50%); color: var(--muted); font: 9px ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .1em; }
.coordinate-label span { color: #d6dae1; margin-right: 7px; }
.coordinate-label b { font-weight: 400; }
.label-left { left: var(--safe-side); }
.label-right { right: calc(var(--safe-side) + 292px); }

.telemetry { position: absolute; left: var(--safe-side); bottom: 100px; width: 238px; }
.telemetry dl { margin: 0; padding: 6px 12px; }
.telemetry dl div { display: flex; justify-content: space-between; align-items: baseline; padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,.06); }
.telemetry dt { font-size: 8px; letter-spacing: .12em; color: var(--dim); }
.telemetry dd { margin: 0; font: 9px ui-monospace, SFMono-Regular, Menlo, monospace; color: #9ea5af; }
.telemetry dd b { color: #e0e4e9; font-size: 11px; }
.signal { padding: 2px 12px 12px; display: flex; align-items: center; gap: 11px; font-size: 7px; letter-spacing: .12em; color: var(--dim); }
.signal > i { flex: 1; height: 2px; background: rgba(255,255,255,.1); }
.signal > i b { display: block; width: 50%; height: 100%; background: var(--cyan); box-shadow: 0 0 6px var(--cyan); transition: width .4s; }

.view-presets { position: absolute; left: var(--safe-side); top: 91px; width: 200px; }
.view-presets > button { display: flex; width: 100%; height: 48px; align-items: center; gap: 11px; padding: 0 11px; border: 0; border-bottom: 1px solid rgba(255,255,255,.06); background: transparent; text-align: left; cursor: pointer; transition: background .2s; }
.view-presets > button:hover, .view-presets > button.active { background: rgba(255,255,255,.065); }
.view-presets > button.active { box-shadow: inset 2px 0 var(--accent); }
.view-presets button i { font: 9px ui-monospace, monospace; color: var(--dim); }
.view-presets button span { color: #d2d6dc; font-size: 9px; letter-spacing: .13em; }
.view-presets button small { display: block; margin-top: 3px; font-size: 7px; letter-spacing: .06em; text-transform: uppercase; color: var(--dim); }

.controls-panel { position: absolute; top: 86px; right: var(--safe-side); bottom: 98px; width: 276px; display: flex; flex-direction: column; transition: transform .35s ease, opacity .35s ease; }
.controls-panel.closed { transform: translateX(calc(100% + 40px)); opacity: 0; }
.controls-header { display: flex; align-items: center; justify-content: space-between; min-height: 62px; padding: 0 15px; border-bottom: 1px solid var(--line); }
.controls-header h2 { margin: 5px 0 0; font-size: 11px; font-weight: 600; letter-spacing: .17em; }
.controls-header button, .help-dialog .panel-heading button { border: 0; background: none; color: var(--muted); font-size: 18px; cursor: pointer; }
.quality-row { margin: 11px 12px 5px; display: grid; grid-template-columns: repeat(3,1fr); border: 1px solid var(--line); }
.quality-row button { border: 0; border-right: 1px solid var(--line); padding: 7px 2px; background: transparent; color: var(--dim); font-size: 7px; letter-spacing: .08em; cursor: pointer; }
.quality-row button:last-child { border-right: 0; }
.quality-row button.active { color: #ecf0f4; background: rgba(255,255,255,.09); }
.parameter-list { overflow-y: auto; overscroll-behavior: contain; padding: 4px 12px 8px; scrollbar-width: thin; scrollbar-color: #383d45 transparent; }
.parameter-group-title { margin: 11px 0 7px; color: #6c737d; font-size: 7px; letter-spacing: .2em; }
.parameter { display: grid; grid-template-columns: 92px 1fr 36px; align-items: center; gap: 7px; min-height: 26px; }
.parameter label { color: #a3a9b1; font-size: 8px; letter-spacing: .08em; }
.parameter output { text-align: right; font: 8px ui-monospace, SFMono-Regular, monospace; color: #c5cad1; }
.parameter input[type="range"] { appearance: none; width: 100%; height: 13px; background: transparent; cursor: pointer; }
.parameter input::-webkit-slider-runnable-track { height: 1px; background: linear-gradient(90deg, #cfd4da var(--fill,50%), #363a42 var(--fill,50%)); }
.parameter input::-webkit-slider-thumb { appearance: none; width: 5px; height: 9px; margin-top: -4px; border: 0; background: #e8ebef; box-shadow: 0 0 5px #fff; }
.controls-footer { margin-top: auto; height: 50px; padding: 8px 12px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; }
.text-button, .primary-button { border: 1px solid var(--line); padding: 8px 11px; background: transparent; font-size: 8px; letter-spacing: .12em; cursor: pointer; }
.primary-button { background: #d8dce1; color: #090b0f; border-color: #d8dce1; }
.open-controls { position: absolute; top: 95px; right: var(--safe-side); align-items: center; gap: 12px; border: 1px solid var(--line); background: rgba(4,6,10,.65); padding: 9px 12px; font-size: 8px; letter-spacing: .13em; }
.open-controls[hidden] { display: none; }
.open-controls:not([hidden]) { display: flex; }

.transport { position: absolute; bottom: max(20px, env(safe-area-inset-bottom)); left: 50%; transform: translateX(-50%); text-align: center; width: min(570px, 54vw); }
.transport-main { height: 52px; display: flex; align-items: center; padding: 0 9px; }
.play-button { flex: 0 0 34px; width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 50%; background: rgba(255,255,255,.04); cursor: pointer; }
.play-button i { display: block; width: 0; height: 0; margin-left: 4px; border-top: 4px solid transparent; border-bottom: 4px solid transparent; border-left: 6px solid #e8ebef; }
.play-button.playing i { width: 6px; height: 8px; margin: auto; border: 0; border-left: 2px solid #e8ebef; border-right: 2px solid #e8ebef; }
.sequence-meta { width: 135px; padding-left: 11px; text-align: left; }
.sequence-meta span, .sequence-meta b { display: block; font-size: 7px; letter-spacing: .1em; color: #b5bbc3; white-space: nowrap; }
.sequence-meta b { margin-top: 4px; color: var(--dim); font-family: ui-monospace, monospace; font-weight: 400; }
.timeline { position: relative; flex: 1; height: 16px; margin: 0 10px; cursor: pointer; }
.timeline::before { content: ""; position: absolute; top: 7px; left: 0; right: 0; height: 1px; background: #333842; }
.timeline i { position: absolute; top: 7px; left: 0; width: 0; height: 1px; background: #dce1e7; }
.timeline button { position: absolute; top: 4px; left: 0; width: 7px; height: 7px; transform: translateX(-50%); padding: 0; border: 1px solid #fff; border-radius: 50%; background: #10131a; box-shadow: 0 0 7px #fff; }
.icon-button { min-width: 36px; height: 34px; border: 0; border-left: 1px solid var(--line); background: transparent; color: #aab0ba; cursor: pointer; }
.icon-button i { font-size: 6px; font-style: normal; color: var(--dim); margin-left: 2px; }
.transport > p { margin: 8px 0 0; font-size: 7px; letter-spacing: .12em; color: #626973; }
.debug-strip { position: absolute; bottom: 23px; right: var(--safe-side); display: flex; align-items: center; gap: 3px; }
.debug-strip span, .debug-strip button { border: 0; background: transparent; color: #5f6670; font-size: 6px; letter-spacing: .06em; padding: 5px 3px; }
.debug-strip span { color: #8c939d; margin-right: 2px; }
.debug-strip button { cursor: pointer; }
.debug-strip button.active { color: #eef1f4; box-shadow: inset 0 -1px #eef1f4; }

.loading { position: fixed; inset: 0; z-index: 20; display: flex; flex-direction: column; align-items: center; justify-content: center; background: #020307; transition: opacity .8s ease, visibility .8s; }
.loading.done { opacity: 0; visibility: hidden; }
.loading-orbit { position: relative; width: 76px; height: 76px; border: 1px solid #272d36; border-radius: 50%; animation: orbit 1.5s linear infinite; }
.loading-orbit::before { content:""; position:absolute; inset: 18px; border-radius:50%; background:#000; box-shadow: 0 0 16px 4px rgba(255,176,90,.2); }
.loading-orbit i { position:absolute; width:5px; height:5px; left:5px; top:33px; border-radius:50%; background:#fff; box-shadow:0 0 9px #fff; }
.loading p { margin: 24px 0 5px; font-size: 9px; letter-spacing: .28em; }
.loading span { color: var(--dim); font-size: 8px; letter-spacing: .1em; }
@keyframes orbit { to { transform: rotate(360deg); } }
.error-panel { position: fixed; z-index: 30; left: 50%; top: 50%; width: min(380px,calc(100vw - 40px)); transform: translate(-50%,-50%); padding: 24px; border: 1px solid rgba(255,120,90,.35); background: rgba(8,5,7,.95); text-align: center; }
.error-panel strong { display: block; margin: 8px 0; }
.error-panel p { color: var(--muted); font-size: 12px; line-height: 1.6; }
.help-dialog { width: min(490px,calc(100vw - 30px)); color: var(--paper); border: 1px solid var(--line); padding: 0; background: rgba(5,7,11,.94); box-shadow: 0 30px 100px #000; backdrop-filter: blur(25px); }
.help-dialog::backdrop { background: rgba(0,0,0,.6); }
.help-dialog form { padding-bottom: 18px; }
.shortcut-grid { display: grid; grid-template-columns: auto 1fr auto 1fr; gap: 10px 14px; padding: 22px; align-items: center; font-size: 10px; color: #a7adb6; }
.help-dialog p { margin: 0 22px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 10px; line-height: 1.6; color: var(--muted); }

@media (max-width: 900px) {
  .controls-panel { width: min(290px, calc(100vw - 24px)); right: 12px; top: 76px; bottom: 84px; }
  .view-presets { top: 78px; left: 12px; width: 175px; }
  .telemetry { left: 12px; bottom: 84px; width: 210px; }
  .label-right { right: 15px; }
  .transport { width: min(560px, calc(100vw - 30px)); }
  .debug-strip { display: none; }
}

@media (max-width: 620px) {
  .masthead { left: 14px; right: 14px; }
  .identity h1 { font-size: 16px; letter-spacing: .25em; }
  .logo-mark { width: 31px; height: 31px; }
  .system-status .status-line, #resolution-chip { display: none; }
  .view-presets { display: grid; grid-template-columns: repeat(4,1fr); top: auto; bottom: 85px; width: calc(100vw - 28px); }
  .view-presets .panel-heading, .view-presets button small { display: none; }
  .view-presets > button { height: 38px; gap: 4px; justify-content: center; padding: 0 4px; }
  .view-presets button span { font-size: 6px; }
  .telemetry { display: none; }
  .transport { bottom: 15px; width: calc(100vw - 28px); }
  .sequence-meta { width: 99px; }
  .sequence-meta span { max-width: 92px; overflow: hidden; }
  .transport > p { display: none; }
  .coordinate-label { display: none; }
  .controls-panel { top: 68px; bottom: 132px; }
  .help-dialog .shortcut-grid { grid-template-columns: auto 1fr; }
}

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