:root, :root[data-theme="dark"] {   /* Night (default): the Sky Compass's own tokens; they beat brand.css's */
  --space: #04060c; --panel: rgba(8, 14, 28, 0.78); --panel-solid: #0a1222; --line: rgba(108, 196, 255, 0.22);
  --text: #e8eefb; --dim: #8fa0bf; --cyan: #6cc4ff; --amber: #ffb547; --lock: #48e0a4; --red: #ff5a4e;
  --soft: #c9d5ec; --warn: #ffb4ad; --btn-bg: rgba(16, 28, 52, .85); --input-bg: rgba(5, 10, 22, .9); --card-bg: rgba(10, 18, 34, .6);
  --hud-bg: rgba(4, 8, 16, .62); --hud-text: #cfe3ff; --guide-fade: rgba(2, 5, 12, .92); --calib-bg: rgba(2, 4, 10, .55);
  --font: "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color-scheme: dark;
}
:root[data-theme="light"] {   /* Day: same layout, light panels; the camera view, intro and charts stay dark (they are the sky) */
  --space: #f6f8fb; --panel: rgba(255, 255, 255, .88); --panel-solid: #ffffff; --line: rgba(30, 70, 130, .22);
  --text: #0b1422; --dim: #4f6079; --cyan: #1764c0; --amber: #a86400; --lock: #0b8a58; --red: #c9372c;
  --soft: #33435c; --warn: #b3261e; --btn-bg: rgba(255, 255, 255, .94); --input-bg: #ffffff; --card-bg: rgba(255, 255, 255, .8);
  --hud-bg: rgba(255, 255, 255, .8); --hud-text: #0b1422; --guide-fade: rgba(246, 248, 251, .95); --calib-bg: rgba(246, 248, 251, .62);
  color-scheme: light;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--space); color: var(--text);
  font: 16px/1.45 var(--font); -webkit-tap-highlight-color: transparent; }
a { color: var(--cyan); }
.mono { font-family: var(--mono); }
.small { font-size: .84rem; } .dim { color: var(--dim); } .warn { color: var(--warn); } .ok { color: var(--lock); }
.mission-tag { font: 600 .72rem var(--mono); letter-spacing: .22em; color: var(--cyan); }

.btn { font: 600 .95rem var(--font); color: var(--text); background: var(--btn-bg); border: 1px solid var(--line);
  border-radius: 10px; padding: 9px 14px; cursor: pointer; text-decoration: none; display: inline-block; text-align: center; }
.btn:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.btn.primary { background: linear-gradient(180deg, #8fd3ff, #4aa8f0); color: #021220; border: none; }
.btn.ghost { background: transparent; }
.btn.big { width: 100%; padding: 15px; font-size: 1.05rem; letter-spacing: .04em; }
.btn.hud { padding: 6px 10px; font-size: .8rem; background: var(--panel); backdrop-filter: blur(6px); }
.btn.lock { background: linear-gradient(180deg, #7af0c2, #2fc58c); color: #02160e; border: none; width: 100%; margin-top: 8px; }

#cam { position: fixed; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; background: #000; }
#hud { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 1; touch-action: none; }
.screen { position: fixed; inset: 0; z-index: 5; }

/* landing */
.landing { overflow: auto; padding: max(32px, env(safe-area-inset-top)) 22px 28px;
  background: radial-gradient(900px 500px at 70% -10%, rgba(74, 168, 240, .22), transparent 60%),
    radial-gradient(600px 400px at -10% 110%, rgba(255, 181, 71, .12), transparent 60%), var(--space); }
.landing > * { max-width: 560px; margin-left: auto; margin-right: auto; }
.landing h1 { font-size: clamp(2rem, 8vw, 2.8rem); line-height: 1.05; margin-top: 14px; margin-bottom: 12px; letter-spacing: -.01em; }
.lead { color: var(--soft); }
.preflight { list-style: none; padding: 0; margin-top: 22px; margin-bottom: 22px; display: grid; gap: 8px; }
.preflight li { display: flex; gap: 12px; align-items: center; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: 10px; background: var(--card-bg); font-size: .92rem; }
.preflight span { font: 600 .75rem var(--mono); color: var(--amber); }
.check { display: flex; gap: 8px; align-items: center; margin-top: 4px; margin-bottom: 14px; color: var(--dim); }
.landing .btn.big { display: block; }

/* cosmic intro */
.cosmos { background: #000; color: var(--text);   /* the intro is space in both themes: keep the Night text colours */
  --text: #e8eefb; --line: rgba(108, 196, 255, 0.22); --amber: #ffb547; }
.cosmos-stage { position: absolute; inset: 0; }
.cosmos-stage canvas { display: block; width: 100%; height: 100%; }
.cosmos-caption { position: absolute; left: 0; right: 0; bottom: 0; padding: 22px 20px max(28px, env(safe-area-inset-bottom));
  background: linear-gradient(transparent, rgba(0, 0, 0, .85) 35%); pointer-events: none; }
.cosmos-title { font: 700 1.5rem var(--font); letter-spacing: .01em; }
.cosmos-sub { color: #c9d5ec; margin-top: 4px; max-width: 640px; }
.cosmos-sub b { color: var(--amber); font-weight: 600; }
.skip-intro { position: absolute; top: max(14px, env(safe-area-inset-top)); right: 14px; z-index: 2; }   /* not .skip: brand.css hides that skip link at left -9999px */
.region { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0; transform: scale(1.6);
  transition: opacity .8s, transform 2.6s cubic-bezier(.2, .7, .2, 1); }
.region.in { opacity: 1; transform: scale(1); }
.region-pin { position: absolute; left: 50%; top: 50%; width: 18px; height: 18px; margin: -9px 0 0 -9px; border-radius: 50%;
  background: var(--amber); box-shadow: 0 0 0 6px rgba(255, 181, 71, .35), 0 0 30px var(--amber); animation: pulse 1.4s infinite; }
.region-credit { position: absolute; top: max(14px, env(safe-area-inset-top)); left: 14px; font: .7rem var(--mono); color: #cfd9ee;
  background: rgba(0, 0, 0, .5); padding: 3px 8px; border-radius: 6px; }
@keyframes pulse { 50% { box-shadow: 0 0 0 14px rgba(255, 181, 71, 0), 0 0 30px var(--amber); } }

/* calibration */
.calib { display: grid; place-items: center; padding: 20px; background: var(--calib-bg); backdrop-filter: blur(3px); }
.card { position: relative; width: min(420px, 100%); text-align: center; background: var(--panel); border: 1px solid var(--line);
  border-radius: 18px; padding: 22px 20px 18px; }
.card::before, .card::after { content: ""; position: absolute; width: 18px; height: 18px; border: 2px solid var(--cyan); }
.card::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; border-radius: 18px 0 0 0; }
.card::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; border-radius: 0 0 18px 0; }
.card h2 { margin: 12px 0 6px; font-size: 1.25rem; }
.card p { margin: 0 0 14px; color: var(--soft); font-size: .92rem; }
.phone-anim { position: relative; height: 104px; margin: 14px auto 0; width: 180px; perspective: 400px; }
.phone-anim .table { position: absolute; left: 0; right: 0; bottom: 8px; height: 26px; border-radius: 6px;
  background: linear-gradient(#3a2a1c, #22180f); transform: rotateX(55deg); }
.phone-anim .phone { position: absolute; left: 66px; width: 48px; height: 78px; border-radius: 10px; border: 3px solid #cfd9ee;
  background: #0b1530; bottom: 10px; transform-origin: bottom center; animation: lay 3s ease-in-out infinite; }
@keyframes lay { 0%, 15% { transform: rotateX(0deg) translateY(-20px); } 55%, 100% { transform: rotateX(70deg) translateY(0); } }
.stops { display: flex; justify-content: center; gap: 10px; margin: 12px 0 2px; }
.stops span { width: 34px; height: 8px; border-radius: 4px; background: rgba(108, 196, 255, .15); position: relative; overflow: hidden; }
.stops span i { position: absolute; inset: 0; width: 0; background: var(--lock); transition: width .15s; }
.phone-anim .phone.turn { animation: turnq 1.6s ease-in-out infinite; transform: rotateX(70deg); }
@keyframes turnq { 0%, 30% { transform: rotateX(70deg) rotateZ(0deg); } 70%, 100% { transform: rotateX(70deg) rotateZ(90deg); } }
.row-btns { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }

/* AR HUD controls */
.ar { position: fixed; inset: 0; z-index: 3; pointer-events: none; }
.ar .hud-buttons, .ar .radar, .ar .guide { pointer-events: auto; }
.telemetry { position: absolute; top: calc(env(safe-area-inset-top) + 82px); left: 0; right: 0; font-size: .64rem;
  color: var(--hud-text); display: flex; flex-wrap: wrap; gap: 2px 10px; pointer-events: none; padding: 5px 10px;
  background: var(--hud-bg); border-bottom: 1px solid var(--line); }
.telemetry b { color: var(--cyan); font-weight: 600; }
.hud-buttons { position: absolute; top: calc(env(safe-area-inset-top) + 128px); right: 10px; display: flex; gap: 6px; }
/* the 1x button: at the left edge, level with the crosshair (under the telemetry it hid the zoom readout) */
.zoom-reset { position: absolute; top: calc(50% - 22px); left: 10px; min-width: 44px; min-height: 44px; pointer-events: auto; }
/* hold mode: HELD under the 1x button while held, and the first hold's hint under the crosshair (spec section 2) */
.held-mark { position: absolute; top: calc(50% + 28px); left: 10px; min-width: 44px; padding: 2px 4px; border-radius: 6px; text-align: center;
  font: 700 .66rem var(--mono); letter-spacing: .12em; color: #ffd27a; background: rgba(4, 9, 20, .72); }
.hold-hint { position: absolute; top: calc(50% + 56px); left: 50%; transform: translateX(-50%); width: max-content; max-width: 80%; margin: 0;
  padding: 6px 10px; border-radius: 10px; text-align: center; font-size: .8rem; color: #e8eefb; background: rgba(4, 9, 20, .72); }
.radar { position: absolute; left: 10px; bottom: calc(env(safe-area-inset-bottom) + 178px); width: 120px; height: 120px;
  border-radius: 50%; background: rgba(8, 14, 28, 0.78); border: 1px solid rgba(108, 196, 255, 0.22); }   /* dark in both themes: drawn like the HUD */
.guide { position: absolute; left: 0; right: 0; bottom: 0; padding: 10px 12px max(12px, env(safe-area-inset-bottom));
  background: linear-gradient(transparent, var(--guide-fade) 22%); text-align: center; }
.guide-main { font: 700 1.12rem var(--font); }
.guide-main.locked { color: var(--lock); }
.targets { display: flex; gap: 8px; overflow-x: auto; padding: 10px 2px 2px; scrollbar-width: none; }
.targets::-webkit-scrollbar { display: none; }
.targets button { flex: 0 0 auto; text-align: left; padding: 8px 12px; border-radius: 10px; min-width: 138px;
  font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--line); cursor: pointer; }
.targets button.on { border-color: var(--amber); box-shadow: 0 0 0 1px var(--amber) inset; }
.targets b { display: block; font-size: .9rem; }
.targets span { font: .68rem var(--mono); color: var(--dim); }

/* sheets */
.sheet { position: fixed; left: 0; right: 0; bottom: 0; z-index: 10; max-height: 82vh; overflow: auto; background: var(--panel-solid);
  border-top: 1px solid var(--line); border-radius: 18px 18px 0 0; padding: 18px 16px max(16px, env(safe-area-inset-bottom)); }
.sheet h2 { margin: 0 0 6px; font-size: 1.1rem; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0; }
.chips button { display: grid; text-align: left; padding: 7px 10px; font: inherit; font-size: .88rem; color: var(--text);
  background: var(--btn-bg); border: 1px solid var(--line); border-radius: 10px; cursor: pointer; }
.chips button span { font: .68rem var(--mono); color: var(--dim); }
.chips button.on { border-color: var(--lock); }
.row-input { display: flex; gap: 6px; margin: 6px 0; }
.row-input input { flex: 1; min-width: 0; font: inherit; color: var(--text); background: var(--input-bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; }
.info-rows { display: grid; grid-template-columns: max-content 1fr; gap: 6px 12px; font-size: .86rem; margin: 8px 0 12px; }
.info-rows dt { color: var(--dim); } .info-rows dd { margin: 0; font-family: var(--mono); font-size: .8rem; }
@media (max-width: 420px) { .info-rows { grid-template-columns: 1fr; } .info-rows dd { margin-bottom: 4px; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

.find { position: relative; margin-top: 8px; }
.find input { width: 100%; font: inherit; color: var(--text); background: var(--input-bg); border: 1px solid var(--line);
  border-radius: 10px; padding: 9px 12px; }
.suggest { position: absolute; left: 0; right: 0; bottom: calc(100% + 4px); max-height: 46vh; overflow: auto; margin: 0; padding: 4px;
  list-style: none; background: var(--panel-solid); border: 1px solid var(--line); border-radius: 12px; text-align: left; z-index: 4; }
.suggest li { padding: 7px 10px; border-radius: 8px; cursor: pointer; }
.suggest li.on, .suggest li:hover { background: rgba(108, 196, 255, .14); }
.suggest li b { font-weight: 600; } .suggest li em { font: .65rem var(--mono); color: var(--amber); font-style: normal; margin-left: 6px; }
.suggest li span { display: block; font: .7rem var(--mono); color: var(--dim); }
.suggest li.none { color: var(--dim); cursor: default; }
.about-row { margin-top: 6px; }
.facts { padding-left: 18px; margin: 8px 0; display: grid; gap: 5px; font-size: .9rem; }

/* Webb (JWST) */
.webb-chip { display: block; width: 100%; margin-bottom: 8px; padding: 8px 12px; text-align: left; font: 600 .86rem var(--font);
  color: #1a1200; background: linear-gradient(180deg, #ffd27a, #f0a832); border: none; border-radius: 10px; cursor: pointer; }
.webb-chip span { display: block; font: .7rem var(--mono); opacity: .8; }
.webb-box { margin: 10px 0; padding: 10px 12px; border: 1px solid rgba(255, 181, 71, .45); border-radius: 10px; background: rgba(255, 181, 71, .07); }
.webb-box b { color: var(--amber); }
.webb-box .btn { margin-top: 8px; }
.webb-sheet { max-height: 94vh; }
.webb-view { width: 100%; height: min(52vh, 460px); border-radius: 10px; overflow: hidden; background: #000; margin: 8px 0; position: relative; }
.webb-tools { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
.webb-tools input[type=range] { width: 110px; vertical-align: middle; }
.webb-tools select { font: inherit; color: var(--text); background: var(--input-bg); border: 1px solid var(--line); border-radius: 6px; padding: 3px; }
.webb-frames { display: grid; gap: 6px; margin: 8px 0; }
.webb-frames button { display: grid; grid-template-columns: 56px 1fr; gap: 10px; align-items: center; text-align: left; font: inherit; font-size: .84rem;
  color: var(--text); background: var(--btn-bg); border: 1px solid var(--line); border-radius: 10px; padding: 6px; cursor: pointer; }
.webb-frames button.on { border-color: var(--amber); }
.webb-frames img { width: 56px; height: 56px; object-fit: cover; border-radius: 6px; background: #000; }
.webb-frames span { display: block; font: .7rem var(--mono); color: var(--dim); }
.webb-links { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: .8rem; margin-top: 4px; }

/* WANDERERS brand on the landing screen (logo + the shared theme toggle) */
.landing-brand { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.landing-brand .logo svg { width: 34px; height: 34px; fill: none; stroke: var(--cyan); }
.landing-brand .logo svg .dot, .landing-brand .logo svg .ink-dot { fill: var(--cyan); stroke: none; }

/* ---- path taken and path ahead (pathview.js) ---- */
#dPath.path-card { margin-top: 12px; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius, 8px); background: var(--card-bg); }
#dPath.path-card h3 { margin: 0; font-size: 1rem; }
#dPath.path-card .panel-row { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.pv-charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 10px; margin: 8px 0; }
.pv-chart { width: 100%; height: auto; background: #050912; border-radius: 6px; }
.pv-title { fill: #e6edf7; font: 600 11px ui-sans-serif, system-ui, sans-serif; }
.pv-dim { fill: #9fb0c8; color: var(--dim); font: 10px ui-monospace, monospace; }
p.pv-dim { font-size: .8rem; }
.pv-yr { fill: #c9d4e8; font: 10px ui-monospace, monospace; }
.pv-past { fill: none; stroke: #7cc4ff; stroke-width: 2; }
.pv-future { fill: none; stroke: #7ee787; stroke-width: 2; stroke-dasharray: 6 4; }
.pv-band { fill: rgba(126, 231, 135, .14); stroke: none; }
.pv-mark { fill: #e6edf7; }
.pv-now { fill: #ffb547; stroke: #050912; stroke-width: 1.5; }
.pv-axis { stroke: #9fb0c8; stroke-width: 1.5; }
.pv-facts { margin: 6px 0; padding-left: 18px; display: grid; gap: 3px; font-size: .86rem; }
.pv-src { font-size: .8rem; color: var(--dim); margin: 6px 0; }
.pv-tag { font: 600 .66rem ui-monospace, monospace; padding: 1px 6px; border-radius: 999px; background: #7ee787; color: #0b1422; margin-right: 4px; }
.pv-tag.cat { background: #9fb0c8; }
.pv-link { font-size: .85rem; }

/* ---- real sky behind the AR view (realsky.js) ---- */
.sky-deep { position: fixed !important; inset: 0; width: 100%; height: 100%; z-index: 0; overflow: hidden; pointer-events: none; background: #000; }
.sky-deep * { pointer-events: none !important; }
.ar .skybar, .ar .sky-card, .ar .drag-bar { pointer-events: auto; }
.skybar { position: absolute; top: calc(env(safe-area-inset-top) + 170px); left: 10px; right: 10px; display: flex; flex-wrap: wrap;
  gap: 6px; align-items: center; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--panel); backdrop-filter: blur(6px); }
.seg button { font: 600 .78rem var(--font); color: var(--text); border: 0; background: transparent; padding: 5px 10px; cursor: pointer; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--cyan); color: #021220; }
.seg[hidden], .tog[hidden], .mix[hidden] { display: none; }
.tog { font-size: .9rem; width: 32px; height: 28px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); color: var(--dim); }
.tog.on { color: var(--cyan); border-color: var(--cyan); }
.mix { display: inline-flex; gap: 6px; align-items: center; font-size: .74rem; color: var(--dim); background: var(--panel); padding: 3px 8px; border-radius: 10px; }
.mix input { width: 90px; }
.sky-note { flex-basis: 100%; margin: 0; padding-right: 48px; font-size: .7rem; color: var(--dim); text-shadow: 0 1px 2px #000; }
.sky-note button { font: inherit; color: var(--amber); background: transparent; border: 1px solid var(--amber); border-radius: 8px; padding: 0 6px; }
/* on the photographs (RealSky.cover() > 0): a dark pill and light text, readable even over a white star, in both themes */
.sky-note.on-photo { max-width: calc(100% - 48px); padding: 4px 8px; border-radius: 8px; background: rgba(4, 9, 20, .72); color: #e8eefb; text-shadow: none; }
.sky-note.on-photo button { color: #ffb547; border-color: #ffb547; }
.sky-card { position: absolute; left: 10px; right: 10px; top: calc(env(safe-area-inset-top) + 250px); max-width: 360px; padding: 10px 34px 10px 12px;
  background: var(--panel-solid); border: 1px solid var(--line); border-radius: 12px; }
.sky-card p { margin: 4px 0 0; }
.sky-card-close { position: absolute; top: 4px; right: 6px; border: 0; background: transparent; color: var(--text); font-size: 1.2rem; }
.drag-bar { position: absolute; left: 10px; right: 10px; top: calc(env(safe-area-inset-top) + 250px); z-index: 2; padding: 8px 10px;
  background: var(--panel-solid); border: 1px solid var(--amber); border-radius: 12px; }
.drag-bar p { margin: 0 0 6px; }
.row-btns.left { justify-content: flex-start; }
.save-box { margin: 10px 0; padding: 10px; border: 1px solid var(--line); border-radius: 12px; }
.save-box .seg { margin: 6px 0; }

/* sight check: aim the big crosshair, then Calibrate */
.aim-bar { position: absolute; left: 0; right: 0; bottom: 0; z-index: 4; padding: 14px 16px max(14px, env(safe-area-inset-bottom));
  background: var(--panel); backdrop-filter: blur(8px); border-top: 1px solid var(--amber); pointer-events: auto; }
.aim-title { font: 700 1.1rem var(--font); margin: 4px 0; color: var(--amber); }
.aim-bar .row-btns { justify-content: stretch; } .aim-bar .row-btns .btn { flex: 1; }
.aiming .guide { display: none; }
.saved-list { list-style: none; margin: 6px 0; padding: 0; display: grid; gap: 6px; font-size: .85rem; }
.saved-list li { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.saved-list .btn { padding: 4px 10px; font-size: .8rem; }