/* Starr Quant Lab homepage — the chaptered scroll story (NOISE / ORDER live-market chapters, orbit desk, galaxy). Content visible by default. */

/* ------------------------------------------------ preloader (only when html.preload) */
.preloader { display: none; }
html.preload .preloader {
  position: fixed; inset: 0; z-index: 100;
  display: grid; place-items: center;
  background: var(--void);
  animation: pl-failsafe 0s linear 4s forwards; /* never trap the page if JS fails */
}
@keyframes pl-failsafe { to { opacity: 0; visibility: hidden; } }
/* the hero copy stays hidden behind the preloader until the reveal takes over (failsafe: shown at 4 s) */
html.preload .hero-inner, html.preload .scroll-hint, html.hold .hero-inner, html.hold .scroll-hint { visibility: hidden; }
html.preload .hero-inner, html.preload .scroll-hint { animation: pl-show 0s linear 4s forwards; }
@keyframes pl-show { to { visibility: visible; } }
.pl-inner { display: grid; justify-items: center; gap: 14px; width: min(280px, 70vw); }
.pl-count { font-family: var(--mono); font-weight: 300; font-size: 56px; letter-spacing: -.02em; color: var(--moon); font-variant-numeric: tabular-nums; }
.pl-line { position: relative; width: 100%; height: 1px; background: var(--border-hi); overflow: hidden; }
.pl-line i { position: absolute; inset: 0; background: var(--moon); transform: scaleX(0); transform-origin: 0 50%; }
.pl-foot { color: var(--haze); }

/* ------------------------------------------------ nav additions */
/* ------------------------------------------------ HUD microcopy */
.era-tag { display: block; color: var(--gold); letter-spacing: .2em; opacity: .85; }
.era-hud {
  position: fixed; right: var(--gutter); bottom: 22px; z-index: 40;
  display: flex; align-items: center; gap: 14px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .18em; color: var(--haze);
  pointer-events: none;
}
.era-bar { width: 96px; height: 1px; background: var(--border-hi); position: relative; overflow: hidden; }
.era-bar i { position: absolute; inset: 0; background: var(--green); transform: scaleX(0); transform-origin: 0 50%; }

/* scrim behind text columns keeps copy legible over additive visuals */
.scrim { position: relative; }
.scrim::before {
  content: ''; position: absolute; inset: -12% -18% -12% -30%; z-index: -1; pointer-events: none;
  background: radial-gradient(closest-side, rgba(3, 7, 18, .72), rgba(3, 7, 18, .35) 60%, transparent);
}

/* ------------------------------------------------ scene-space overlay */
.cosmos { position: fixed; inset: 0; z-index: 5; pointer-events: none; }
.shade { position: absolute; inset: 0; width: 100%; height: 100%; max-width: none; opacity: 0; }
.shade circle { fill: var(--void); }
.iris { position: absolute; inset: 0; width: 100%; height: 100%; max-width: none; opacity: 0; }
.cosmos-svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; max-width: none; }
.cosmos-svg circle { fill: none; stroke: rgba(242, 242, 247, .09); stroke-width: 1; stroke-dasharray: 2 5; }
.cosmos-svg circle.local { stroke: rgba(94, 234, 212, .16); }
.cosmos-svg line { stroke: rgba(242, 242, 247, .22); stroke-width: 1; }
.venue-tags { opacity: 0; }
/* ERA 0: the singularity is one soft point at the black hole's hero centre until the eruption; JS places + shows it.
   Above the content layer, below the edge fade. */
.singularity {
  position: fixed; z-index: 20; pointer-events: none; left: 0; top: 0; width: 16px; height: 16px; margin: -8px 0 0 -8px; border-radius: 50%;
  background: radial-gradient(circle, #fff 0 20%, rgba(242, 242, 247, .6) 34%, rgba(153, 246, 228, .16) 60%, transparent 72%);
  box-shadow: 0 0 40px 12px rgba(242, 242, 247, .12);
  opacity: 0; visibility: hidden;
}
.tag {
  position: absolute; left: 0; top: 0; white-space: nowrap;
  font-family: var(--mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--moon-dim); line-height: 1.3; text-align: center;
  transform: translate(-50%, -50%);
  text-shadow: 0 0 8px var(--void), 0 0 2px var(--void);
}
.tag small { display: block; color: var(--green); font-size: 10px; letter-spacing: .08em; }
.tag.remote small { color: var(--violet); }
.tag.core { color: var(--gold); font-size: 11px; }
.tag.core small { color: var(--haze); }

/* ------------------------------------------------ hero (demo A) */
.hero { align-items: flex-end; padding-bottom: 14vh; text-shadow: 0 0 28px rgba(3, 7, 18, .55); }
/* E: the hero now scrolls straight into the nebula, so its left scrim must not end on a hard horizontal edge */
@media (min-width: 901px) {
  .hero.scrim-left { background-image: none; }
  .hero::before { content: ''; position: absolute; inset: 0; pointer-events: none;
    background: linear-gradient(to right, rgba(var(--void-rgb), .78) 0, rgba(var(--void-rgb), .6) 28%, rgba(var(--void-rgb), .25) 50%, transparent 66%);
    -webkit-mask: linear-gradient(to bottom, #000 55%, transparent); mask: linear-gradient(to bottom, #000 55%, transparent); }
}
.hero-inner > * { max-width: 760px; }
.hero-title { font-size: clamp(52px, 6.2vw, 112px); max-width: 15ch !important; }
.hero-title em { font-style: normal; color: var(--green); }
.hero .lede { max-width: 44ch; }
.hero-meta { display: flex; gap: 0; margin-top: 40px; border-top: 1px solid var(--border); max-width: 560px; }
.hero-meta > div { flex: 1; padding: 18px 20px 0 0; }
.hero-meta > div + div { padding-left: 20px; border-left: 1px solid var(--border); }
.hero-meta dd { margin: 6px 0 0; font-size: 30px; font-weight: 200; letter-spacing: -.03em; color: var(--moon); font-variant-numeric: tabular-nums; }
.scroll-hint {
  position: absolute; right: var(--gutter); bottom: 5vh;
  display: flex; align-items: center; gap: 14px; color: var(--haze);
}
.scroll-hint i { display: block; width: 1px; height: 44px; background: linear-gradient(var(--green), transparent); transform-origin: top; animation: hint 2.4s var(--ease) infinite; }
@keyframes hint { 0% { transform: scaleY(0); opacity: 1; } 70% { transform: scaleY(1); opacity: 1; } 100% { transform: scaleY(1); opacity: 0; } }

/* ------------------------------------------------ live feed status + attribution */
.feed-line { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; }
.attr { color: var(--haze); letter-spacing: .16em; }
.feed { display: inline-flex; align-items: center; gap: 8px; color: var(--dust); font-size: 10px; letter-spacing: .16em; }
.feed i { width: 6px; height: 6px; border-radius: 50%; background: var(--dust); }
.feed[data-status="live"] { color: var(--haze); }
.feed[data-status="live"] i { background: var(--green); box-shadow: 0 0 8px var(--green); animation: feed-pulse 2.4s ease-in-out infinite; }
.feed[data-status="stale"] i, .feed[data-status="reconnecting"] i { background: var(--pink); }
@keyframes feed-pulse { 50% { opacity: .45; } }
.tk-px, .tk-pct, .r-px, .r-qty { font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ------------------------------------------------ NOISE: live tape over the nebula */
.noise h2, .order h2 { font-size: clamp(44px, 5.2vw, 88px); }
.tape { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.tk {
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 8px; align-items: baseline;
  padding: 10px 0; border-bottom: 1px solid var(--border);
  font-family: var(--mono); text-shadow: 0 0 10px var(--void), 0 0 3px var(--void);
}
@media (min-width: 901px) {
  html.pin .tk::before { content: ''; position: absolute; inset: -10px -14px; z-index: -1; background: radial-gradient(closest-side, rgba(3, 7, 18, .8), rgba(3, 7, 18, .45) 70%, transparent); }
}
.tk-dot { grid-row: 1; grid-column: 1; width: 5px; height: 5px; border-radius: 50%; background: var(--dust); align-self: center; }
.tk-sym { grid-row: 1; grid-column: 2; font-size: 10px; letter-spacing: .14em; color: var(--haze); }
.tk-px { grid-row: 2; grid-column: 1 / -1; font-size: 15px; color: var(--moon); letter-spacing: -.01em; min-width: 10ch; }
.tk-pct { grid-row: 2; grid-column: 2; justify-self: end; font-size: 11px; color: var(--dust); min-width: 7ch; text-align: right; }
.tk[data-dir="up"] .tk-pct { color: var(--green); }
.tk[data-dir="down"] .tk-pct { color: var(--pink); }
.tk[data-dir="up"] .tk-dot { background: var(--green); box-shadow: 0 0 8px var(--green); }
.tk[data-dir="down"] .tk-dot { background: var(--pink); box-shadow: 0 0 8px var(--pink); }
.noise-gap { display: none; }

/* ------------------------------------------------ ORDER: the book on the rungs */
/* Each row's origin is its rung. The label sits just ABOVE the line (baseline ~6px over it) and a glowing node
   dot sits ON the line, so the rung never runs through text and no backing box is needed; legibility comes
   from a soft text-shadow halo only. */
.book { position: relative; height: calc(11 * var(--row, 34px)); }
.row {
  position: absolute; left: 0; right: 0; top: calc((var(--i) + .5) * var(--row, 34px)); height: 0;
  font-family: var(--mono); font-size: 12px; line-height: 1; color: var(--moon);
}
.row-l {
  position: absolute; left: 0; right: 0; bottom: 4px;
  display: grid; grid-template-columns: 8.5em minmax(0, 1fr) auto; align-items: baseline; column-gap: 12px; padding-left: 18px;
  text-shadow: 0 0 6px var(--void), 0 0 14px var(--void), 0 0 2px var(--void);
}
.row i { position: absolute; left: 4px; top: 0; width: 7px; height: 7px; margin: -3.5px 0 0 -3.5px; border-radius: 50%; box-shadow: 0 0 10px currentColor; background: currentColor; }
.row .r-side { white-space: nowrap; font-size: 10px; letter-spacing: .14em; text-transform: uppercase; color: var(--haze); justify-self: start; }
.row .r-px { justify-self: start; font-size: 14px; }
.row .r-qty { color: var(--haze); justify-self: end; min-width: 11ch; text-align: right; }
.row.ask { color: var(--pink); } .row.bid { color: var(--green); } .row.mid { color: var(--gold); }
.row.ask .r-px { color: var(--pink); } .row.bid .r-px { color: var(--green); } .row.mid .r-px { color: var(--gold); }

@media (min-width: 901px) {
  html.pin .noise-inner, html.pin .order-inner { min-height: calc(100svh - var(--nav-h) - 20vh); display: flex; }
  html.pin .noise-inner { align-items: flex-end; }
  html.pin .noise-copy { max-width: 460px; }
  /* the headline must never be clipped by the copy column: at >=1700px the clamp caps at 88px
     and "Microstructure." is wider than 460px, which read as a typo */
  html.pin .noise-copy h2, html.pin .order-copy h2 { width: max-content; max-width: min(46vw, 780px); }
  html.pin .tape { position: absolute; inset: 0; display: block; z-index: 2; pointer-events: none; }
  html.pin .tk { position: absolute; left: 0; top: 0; width: 150px; margin: -24px 0 0 -8px; padding: 0; border: 0; opacity: 0; will-change: transform, opacity; }
  html.pin .order-inner { align-items: center; }
  html.pin .order-copy { max-width: 440px; }
  html.pin .book { position: absolute; inset: 0; height: auto; z-index: 2; pointer-events: none; }
  html.pin .row { top: 0; left: auto; right: var(--gutter); width: 390px; opacity: 0; will-change: transform, opacity; }
  html.pin .row i { left: 0; }
}
@media (min-width: 901px) {
  html:not(.pin) .noise-inner, html:not(.pin) .order-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: center; }
  html:not(.pin) .book { --row: 44px; }
}

/* ------------------------------------------------ desk: stats in orbit around the hole */
.desk h2 { font-size: clamp(36px, 3.6vw, 60px); }
.stat-label { color: var(--haze); }
.stat-label b { display: block; font-weight: 500; color: var(--moon); margin-bottom: 2px; }
.orbit-svg { position: absolute; left: 0; top: 0; width: 100%; height: 100%; overflow: visible; max-width: none; pointer-events: none; z-index: 1; }
.orbit-svg path { fill: none; stroke: rgba(153, 246, 228, .42); stroke-width: 1; stroke-dasharray: 1 1; stroke-dashoffset: 1; }
.orbit-svg .orbit-back { stroke: rgba(153, 246, 228, .2); }
.orbit-svg polyline { fill: none; stroke: rgba(242, 242, 247, .32); stroke-width: 1; }
.orbit-svg circle.node { fill: var(--green); }
.orbit-svg circle.node-halo { fill: none; stroke: rgba(94, 234, 212, .45); stroke-width: 1; }
.ostat .stat-value { display: block; font-size: clamp(34px, 3vw, 48px); white-space: nowrap; }
.ostat .stat-label { display: block; margin-top: 8px; font-size: 10px; letter-spacing: .1em; line-height: 1.5; }
/* flow layout (phones, reduced motion): copy, then the stats as a 2x2 HUD grid around an empty slot the hole sits in */
.orbit-stats { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.orbit-slot { grid-column: 1 / -1; height: clamp(190px, 52vw, 300px); }
.ostat { position: relative; z-index: 1; padding: 14px 0 10px; text-shadow: 0 0 10px var(--void), 0 0 3px var(--void); }
.ostat[data-q="ll"], .ostat[data-q="lr"] { padding: 10px 0 14px; }
@media (min-width: 901px) {
  /* pinned: the copy owns a left column, the stats are placed around the hole every frame by main.js */
  html.pin .desk-inner { min-height: calc(100svh - var(--nav-h) - 20vh); display: flex; align-items: center; }
  html.pin .desk-copy { max-width: 440px; }
  html.pin .orbit-stats { position: absolute; inset: 0; display: block; z-index: 2; }
  html.pin .orbit-slot { display: none; }
  html.pin .ostat { position: absolute; left: 0; top: 0; width: 200px; padding: 0; opacity: 0; will-change: transform, opacity; }
  html.pin .ostat[data-q="ll"], html.pin .ostat[data-q="lr"] { padding: 0; }
  html.pin .ostat[data-q="ul"], html.pin .ostat[data-q="ll"] { text-align: right; }
}
@media (min-width: 901px) {
  html:not(.pin) .desk-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: center; }
}

/* ------------------------------------------------ approach */
.approach-inner { display: grid; grid-template-columns: 1fr; }
.approach-inner:has(.sequenced) { grid-template-columns: minmax(0, 520px) 1fr; }
.approach h2 { font-size: clamp(40px, 5vw, 80px); }
.approach .lede { font-size: 17px; }
@media (min-width: 901px) { .approach .stack > * + * { margin-top: 22px; } .approach .service { padding: 28px 30px 30px; } .approach { padding-top: calc(var(--nav-h) + 4vh); padding-bottom: 6vh; } }
.desk .scrim::before, .order .scrim::before, .noise .scrim::before { background: radial-gradient(closest-side, rgba(3, 7, 18, .86), rgba(3, 7, 18, .55) 60%, transparent); }
.edge-tabs { display: none; gap: 18px; font-family: var(--mono); font-size: 11px; letter-spacing: .16em; color: var(--dust); }
.edge-tabs li { padding-top: 8px; border-top: 1px solid var(--border-hi); width: 64px; transition: color .5s var(--ease), border-color .5s var(--ease); }
.edge-tabs li.on { color: var(--gold); border-color: var(--gold); }
.services .service { background: rgba(3, 7, 18, .7); }
.services .service .hud { margin-bottom: 22px; color: var(--gold); }
.bullets { margin-top: 16px; display: grid; gap: 6px; }
.bullets li { font-family: var(--mono); font-size: 11px; letter-spacing: .06em; color: var(--moon-dim); padding-left: 14px; position: relative; }
.bullets li::before { content: ''; position: absolute; left: 0; top: .72em; width: 6px; height: 1px; background: var(--green); }
.services.sequenced { display: grid; grid-template-columns: 1fr; background: none; border: 0; }
.services.sequenced .service { grid-area: 1 / 1; border: 1px solid var(--border); }
.approach-copy:has(.sequenced) .edge-tabs { display: flex; }

/* ------------------------------------------------ exchanges */
.ex-inner { display: grid; grid-template-columns: minmax(0, 600px) 1fr; }
.exchanges h2 { font-size: clamp(40px, 4.4vw, 68px); }
.exchanges .lede { font-size: 16px; }
.ex-list { display: grid; grid-template-columns: 1fr 1fr; column-gap: 28px; border-top: 1px solid var(--border); }
.ex-list li {
  display: grid; grid-template-columns: 22px 1fr auto; align-items: baseline; column-gap: 10px;
  padding: 9px 0; border-bottom: 1px solid var(--border);
}
.ex-list li > :nth-child(1) { grid-column: 1; grid-row: 1; }
.ex-list li > :nth-child(2) { grid-column: 2; grid-row: 1; }
.ex-list li > :nth-child(3) { grid-column: 2; grid-row: 2; font-size: 9px; }
.ex-name { font-size: 19px; font-weight: 300; color: var(--moon); letter-spacing: -.01em; }
.ex-ms { grid-column: 3; grid-row: 1 / span 2; font-family: var(--mono); font-size: 13px; color: var(--green); align-self: center; white-space: nowrap; }
.ex-list li.remote .ex-ms { color: var(--violet); }
.ex-body { font-size: 14px; line-height: 1.6; color: var(--haze); max-width: 60ch; }
.ex-note { color: var(--dust); }
.exchanges .stack > * + * { margin-top: 20px; }
@media (min-width: 901px) { .exchanges { padding-top: calc(var(--nav-h) + 4vh); padding-bottom: 5vh; } }

/* ------------------------------------------------ philosophy + epilogue */
.phil-inner { display: grid; grid-template-columns: minmax(0, 760px) 1fr; }
.quote .w { display: inline-block; }
.epilogue { min-height: 125svh; padding-top: 48vh; padding-bottom: 12vh; }
.epilogue .cta { justify-content: center; }
.epilogue h2 { text-wrap: balance; }

/* ------------------------------------------------ mobile */
@media (max-width: 900px) {
  .era-hud { display: none; }
  .hero-inner, .desk-inner, .approach-inner, .ex-inner, .phil-inner, .noise-inner, .order-inner { grid-template-columns: 1fr; gap: 32px; }
  /* NOISE: an empty gap frames the nebula, then the headline and a 2-column tape; ORDER: copy, then the book */
  .noise, .order { min-height: 0; display: block; padding-top: 12vh; padding-bottom: 12vh; }
  .noise-gap { display: block; height: 50svh; }
  .noise-inner, .order-inner { display: grid; }
  .noise-copy .feed-line, .order-copy .feed-line { gap: 6px 14px; }
  .tape { position: relative; }
  .tape::before { content: ''; position: absolute; inset: -16px -16px; z-index: -1; background: rgba(3, 7, 18, .62); -webkit-mask: linear-gradient(transparent, #000 16px, #000 calc(100% - 16px), transparent); mask: linear-gradient(transparent, #000 16px, #000 calc(100% - 16px), transparent); }
  .tk-px { font-size: 14px; }
  .order { padding-top: 16vh; }
  .book { --row: 34px; margin-top: 8px; }
  .row { font-size: 11px; }
  .row-l { column-gap: 8px; grid-template-columns: 6.6em minmax(0, 1fr) auto; bottom: 5px; padding-left: 16px; }
  .row .r-side { font-size: 9px; letter-spacing: .08em; }
  .row .r-px { font-size: 13px; }
  .row .r-qty { min-width: 10ch; }
  .hero { padding-top: 38svh; padding-bottom: 10vh; }
  .hero .lede { font-size: 16px; }
  .hero-meta dd { font-size: 24px; }
  .hero-meta > div { padding-right: 12px; }
  .hero-meta > div + div { padding-left: 12px; }
  .scroll-hint { display: none; }
  .scrim::before, .desk .scrim::before {
    inset: -28px -16px; background: rgba(3, 7, 18, .76);
    -webkit-mask: linear-gradient(transparent, #000 28px, #000 calc(100% - 28px), transparent);
    mask: linear-gradient(transparent, #000 28px, #000 calc(100% - 28px), transparent);
  }
  .desk, .approach, .exchanges, .philosophy { min-height: 0; padding-top: 18vh; padding-bottom: 18vh; }
  /* empty top gaps frame the visual beats on phones: the vortex (ERA II) and the constellation (ERA III) live
     in the top half of the viewport while the gap passes; main.js times e2/e3 against these gaps */
  .approach { padding-top: 70vh; }
  .exchanges { padding-top: 90vh; }
  .philosophy { padding-top: 55vh; }
  .ex-list { grid-template-columns: 1fr; }
  .epilogue { padding-top: 45vh; }
  .ostat { padding-left: 10px; padding-right: 10px; }
  .ostat::before { content: ''; position: absolute; inset: -10px -14px; z-index: -1; pointer-events: none; background: radial-gradient(closest-side, rgba(3, 7, 18, .78), rgba(3, 7, 18, .4) 65%, transparent); }
  .tag { font-size: 9px; letter-spacing: .1em; }
  .tag small { font-size: 9px; }
}
@media (prefers-reduced-motion: reduce) { .scroll-hint i { animation: none; } }
@media (max-width: 600px) {
  .footer { flex-direction: column; gap: 10px; }
  .stat-label { font-size: 10px; letter-spacing: .06em; }
}

/* contact: LinkedIn link under the CTA buttons; footer link group */
.cta-link { align-self: center; margin-top: 4px; }
.footer-links { display: inline-flex; gap: 22px; flex-wrap: wrap; }
.anchor-alias { position: absolute; left: 0; top: 0; }
/* no JS: there is no live feed or scroll story, so hide its status line, the empty tape / book and the scroll HUD */
html:not(.js) .feed-line, html:not(.js) .tape, html:not(.js) .book, html:not(.js) .era-hud, html:not(.js) .scroll-hint { display: none; }