/* ============================================================
   Latent Minds Institute · the observatory design system
   Loads AFTER paper.css. Warm ivory, graphite, muted copper,
   one ultraviolet accent used sparingly. Grey-violet hairlines.
   "An observatory for artificial minds."
   ============================================================ */

:root {
  --obs-bg:        #FBFAF6;
  --obs-ink:       #191813;
  --obs-ink-2:     #45443C;
  --obs-ink-3:     #706E63;
  --obs-copper:    #96481D;   /* muted copper, research chrome  */
  --obs-copper-2:  #B05A28;
  --obs-uv:        #4F46C8;   /* ultraviolet, used sparingly    */
  --obs-uv-soft:   rgba(79, 70, 200, 0.08);
  --obs-hair:      #E7E4EC;   /* grey-violet structural lines    */
  --obs-hair-2:    #D6D2DF;
  --obs-panel:     #FFFFFF;
}

body.observatory { background: var(--obs-bg); color: var(--obs-ink); }
body.observatory .site-nav { background: rgba(251, 250, 246, 0.92); border-bottom-color: var(--obs-hair); }

/* ---------- masthead ---------- */
.obs-mast { max-width: var(--w-wide); margin: 0 auto; padding: 56px 24px 0; }
.obs-kicker { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--obs-copper); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.obs-kicker .right { color: var(--obs-ink-3); }
.obs-title { font-family: var(--serif); font-weight: 600; font-size: clamp(34px, 6.4vw, 62px); line-height: 1.08; letter-spacing: -0.018em; margin: 26px 0 18px; max-width: 780px; }
.obs-sub { font-family: var(--serif); font-size: clamp(17px, 2.4vw, 21px); font-style: italic; line-height: 1.55; color: var(--obs-ink-2); max-width: 640px; }
.obs-byline { margin-top: 28px; font-family: var(--sans); font-size: 14px; color: var(--obs-ink-2); display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: baseline; }
.obs-byline .who { font-weight: 600; color: var(--obs-ink); }
.obs-byline .sep { color: var(--obs-hair-2); }
.obs-links { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 10px; }
.obs-links a { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.06em; padding: 7px 14px; border: 1px solid var(--obs-hair-2); border-radius: 3px; color: var(--obs-ink-2); transition: all 150ms ease; }
.obs-links a:hover, .obs-links a:focus-visible { border-color: var(--obs-copper); color: var(--obs-copper); }
.obs-links a.primary { background: var(--obs-ink); border-color: var(--obs-ink); color: var(--obs-bg); }
.obs-links a.primary:hover, .obs-links a.primary:focus-visible { background: var(--obs-copper); border-color: var(--obs-copper); color: #fff; }

/* latent field hero */
.obs-field { max-width: var(--w-wide); margin: 40px auto 0; padding: 0 24px; }
.obs-field canvas { width: 100%; height: 150px; display: block; }
.obs-field-caption { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--obs-ink-3); margin-top: 10px; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }

/* ---------- landing sections ---------- */
.obs-section { max-width: var(--w-wide); margin: 0 auto; padding: 60px 24px 8px; }
.obs-section-rule { max-width: var(--w-wide); margin: 52px auto 0; padding: 0 24px; }
.obs-section-rule hr { border: none; border-top: 1px solid var(--obs-hair); }
.obs-label { font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--obs-ink-3); margin-bottom: 20px; display: flex; align-items: baseline; gap: 14px; }
.obs-label .no { color: var(--obs-copper); }
.obs-h2 { font-family: var(--serif); font-weight: 600; font-size: clamp(24px, 3.6vw, 32px); letter-spacing: -0.012em; margin-bottom: 16px; }
.obs-prose { font-family: var(--serif); font-size: 17.5px; line-height: 1.7; color: var(--obs-ink-2); max-width: 660px; }
.obs-prose p { margin-bottom: 14px; }
.obs-prose strong { color: var(--obs-ink); font-weight: 600; }

/* thesis block */
.obs-thesis { border-left: 2px solid var(--obs-copper); padding: 6px 0 6px 26px; max-width: 680px; }
.obs-thesis p { font-family: var(--serif); font-size: clamp(18px, 2.6vw, 22px); line-height: 1.55; color: var(--obs-ink); }

/* featured card */
.obs-featured { border: 1px solid var(--obs-ink); border-radius: 6px; background: var(--obs-panel); overflow: hidden; box-shadow: 5px 5px 0 var(--obs-hair); }
.obs-featured-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; padding: 12px 22px; border-bottom: 1px solid var(--obs-hair); background: var(--obs-bg); font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--obs-ink-3); }
.obs-featured-head .flag { color: var(--obs-copper); }
.obs-featured-body { padding: 26px 22px; }
.obs-featured-body h3 { font-family: var(--serif); font-weight: 600; font-size: clamp(22px, 3.4vw, 30px); line-height: 1.2; letter-spacing: -0.012em; margin-bottom: 6px; }
.obs-featured-body .fsub { font-family: var(--serif); font-style: italic; font-size: 16.5px; color: var(--obs-ink-2); margin-bottom: 18px; max-width: 620px; }
.obs-featured-q { font-family: var(--sans); font-size: 13px; color: var(--obs-ink-2); border: 1px dashed var(--obs-hair-2); border-radius: 4px; padding: 12px 16px; margin: 16px 0; max-width: 640px; }
.obs-featured-q b { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--obs-uv); display: block; margin-bottom: 5px; }
.obs-featured-body .fabs { font-family: var(--sans); font-size: 14.5px; line-height: 1.65; color: var(--obs-ink-2); max-width: 640px; margin-bottom: 18px; }
.obs-meta-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 18px 0 22px; max-width: 640px; }
.obs-meta-grid .cell { border-top: 1px solid var(--obs-hair); padding-top: 8px; }
.obs-meta-grid .k { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--obs-ink-3); }
.obs-meta-grid .v { font-family: var(--sans); font-size: 13px; color: var(--obs-ink); margin-top: 4px; line-height: 1.5; }

/* research map + questions */
.obs-map-note, .obs-fig-note { font-family: var(--sans); font-size: 13px; color: var(--obs-ink-3); max-width: 620px; line-height: 1.6; margin-top: 14px; }
.obs-map-detail { min-height: 74px; border-left: 2px solid var(--obs-uv); padding: 4px 0 4px 18px; margin-top: 18px; max-width: 620px; font-family: var(--sans); font-size: 14px; line-height: 1.6; color: var(--obs-ink-2); }
.obs-map-detail b { display: block; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--obs-uv); margin-bottom: 4px; }

.obs-questions { list-style: none; counter-reset: q; max-width: 680px; }
.obs-questions li { counter-increment: q; display: grid; grid-template-columns: 44px 1fr; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--obs-hair); font-family: var(--serif); font-size: 17.5px; line-height: 1.55; }
.obs-questions li::before { content: "Q" counter(q); font-family: var(--mono); font-size: 12px; color: var(--obs-copper); padding-top: 5px; }

/* entries reuse paper.css .entry; observatory tint */
body.observatory .entry:hover { background: #F5F3EE; }
body.observatory .entry .e-meta .e-type { color: var(--obs-copper); }

/* status pills */
.obs-pill { display: inline-block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; border: 1px solid var(--obs-hair-2); border-radius: 20px; padding: 3px 10px; color: var(--obs-ink-3); }
.obs-pill.live { border-color: var(--obs-copper); color: var(--obs-copper); }
.obs-pill.draft { border-style: dashed; }

/* ---------- paper layout with sticky TOC ---------- */
.paper-shell { max-width: 1080px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 56px; }
.paper-main { min-width: 0; max-width: 700px; }
.paper-toc { position: sticky; top: calc(var(--nav-h) + 28px); align-self: start; font-family: var(--sans); padding-top: 88px; }
.paper-toc .toc-label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--obs-ink-3); margin-bottom: 12px; }
.paper-toc ol { list-style: none; border-left: 1px solid var(--obs-hair); }
.paper-toc a { display: block; font-size: 12.5px; line-height: 1.4; color: var(--obs-ink-3); padding: 5px 0 5px 14px; margin-left: -1px; border-left: 2px solid transparent; transition: all 140ms ease; }
.paper-toc a:hover { color: var(--obs-ink); }
.paper-toc a.active { color: var(--obs-copper); border-left-color: var(--obs-copper); }

/* mobile reading progress */
#readProgress { position: fixed; top: 0; left: 0; height: 2px; width: 0; background: var(--obs-copper); z-index: 300; }

/* paper header */
.paper-head { padding: 56px 0 0; }
.paper-area { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--obs-copper); margin-bottom: 18px; }
.paper-title { font-family: var(--serif); font-weight: 600; font-size: clamp(30px, 5.6vw, 46px); line-height: 1.12; letter-spacing: -0.016em; margin-bottom: 12px; }
.paper-subtitle { font-family: var(--serif); font-style: italic; font-size: clamp(17px, 2.6vw, 21px); line-height: 1.5; color: var(--obs-ink-2); max-width: 620px; margin-bottom: 26px; }
.paper-byline { display: flex; flex-wrap: wrap; gap: 8px 22px; font-family: var(--sans); font-size: 13.5px; color: var(--obs-ink-2); padding: 14px 0; border-top: 1px solid var(--obs-ink); border-bottom: 1px solid var(--obs-hair); }
.paper-byline .k { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--obs-ink-3); display: block; margin-bottom: 2px; }
.paper-byline .cell b { font-weight: 600; color: var(--obs-ink); }

/* paper body */
.paper-body { font-family: var(--serif); font-size: 18px; line-height: 1.72; color: var(--obs-ink-2); }
.paper-body h2 { font-family: var(--serif); font-weight: 600; font-size: 25px; color: var(--obs-ink); letter-spacing: -0.01em; margin: 2.4em 0 0.7em; padding-bottom: 8px; border-bottom: 1px solid var(--obs-hair); display: flex; align-items: baseline; gap: 12px; }
.paper-body h2 .sno { font-family: var(--mono); font-size: 12px; color: var(--obs-copper); letter-spacing: 0.08em; }
.paper-body h3 { font-family: var(--serif); font-weight: 600; font-size: 19px; color: var(--obs-ink); margin: 1.7em 0 0.55em; }
.paper-body p { margin-bottom: 1.1em; }
.paper-body strong { color: var(--obs-ink); font-weight: 600; }
.paper-body ul, .paper-body ol { margin: 0 0 1.1em 1.35em; }
.paper-body li { margin-bottom: 0.45em; }
.paper-body .abstract { font-family: var(--sans); font-size: 15px; line-height: 1.7; border-left: 2px solid var(--obs-ink); padding: 4px 0 4px 22px; margin: 34px 0; color: var(--obs-ink-2); }
.paper-body .abstract b { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--obs-ink-3); display: block; margin-bottom: 8px; }

/* definition pair (the central distinction) */
.def-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--obs-hair-2); border: 1px solid var(--obs-hair-2); border-radius: 6px; overflow: hidden; margin: 26px 0; font-family: var(--sans); }
.def-pair .def { background: var(--obs-panel); padding: 20px; }
.def-pair .def h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 10px; }
.def-pair .def:first-child h4 { color: var(--obs-uv); }
.def-pair .def:last-child h4 { color: var(--obs-copper); }
.def-pair .def p { font-size: 13.5px; line-height: 1.6; color: var(--obs-ink-2); margin: 0; }
.callout { background: var(--obs-uv-soft); border: 1px solid rgba(79, 70, 200, 0.25); border-radius: 6px; padding: 16px 20px; margin: 24px 0; font-family: var(--sans); font-size: 14px; line-height: 1.65; color: var(--obs-ink); }
.callout b { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--obs-uv); display: block; margin-bottom: 6px; }

/* hypothesis / experiment blocks */
.hblock { border: 1px solid var(--obs-hair-2); border-radius: 6px; margin: 18px 0; font-family: var(--sans); overflow: hidden; }
.hblock .hh { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; padding: 10px 16px; background: var(--obs-bg); border-bottom: 1px solid var(--obs-hair); font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; }
.hblock .hh .id { color: var(--obs-copper); font-weight: 600; }
.hblock .hh .st { color: var(--obs-ink-3); }
.hblock .hb { padding: 14px 16px; font-size: 14px; line-height: 1.65; color: var(--obs-ink-2); }
.hblock .hb p { margin-bottom: 8px; }
.hblock .hb p:last-child { margin-bottom: 0; }
.hblock .hb .k { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--obs-ink-3); }

/* references */
.refs { font-family: var(--sans); font-size: 13.5px; line-height: 1.6; color: var(--obs-ink-2); }
.refs li { margin-bottom: 12px; padding-left: 6px; }
.refs a { color: var(--obs-copper); border-bottom: 1px solid rgba(150, 72, 29, 0.3); }
.refs a:hover { border-bottom-color: var(--obs-copper); }

/* citation block */
.cite-block { font-family: var(--mono); font-size: 12px; line-height: 1.6; background: var(--obs-panel); border: 1px solid var(--obs-hair-2); border-radius: 6px; padding: 16px 18px; overflow-x: auto; white-space: pre; color: var(--obs-ink-2); margin: 18px 0; }

/* version history */
.vh { font-family: var(--sans); font-size: 13.5px; }
.vh li { display: grid; grid-template-columns: 90px 1fr; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--obs-hair); list-style: none; }
.vh .v { font-family: var(--mono); color: var(--obs-copper); }

/* ---------- observatory figures ---------- */
body.observatory .figure { border-color: var(--obs-hair-2); }
body.observatory .figure-head { background: var(--obs-bg); border-bottom-color: var(--obs-hair); }
body.observatory .figure-head .fig-tag { color: var(--obs-uv); }
body.observatory .figure-caption { border-top-color: var(--obs-hair); }
.fig-detail { min-height: 66px; border-left: 2px solid var(--obs-copper); padding: 4px 0 4px 16px; margin-top: 14px; font-family: var(--sans); font-size: 13.5px; line-height: 1.6; color: var(--obs-ink-2); }
.fig-detail b { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--obs-copper); margin-bottom: 4px; }
.fig-stagerow { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.fig-stage { font-family: var(--mono); font-size: 11.5px; padding: 7px 12px; border: 1px solid var(--obs-hair-2); border-radius: 3px; background: var(--obs-panel); color: var(--obs-ink-2); cursor: pointer; transition: all 130ms ease; }
.fig-stage:hover { border-color: var(--obs-ink); color: var(--obs-ink); }
.fig-stage.on { background: var(--obs-ink); border-color: var(--obs-ink); color: var(--obs-bg); }
.fig-stage:focus-visible { outline: 2px solid var(--obs-uv); outline-offset: 2px; }
svg .qdot { cursor: pointer; }
svg .qdot:focus { outline: none; }
svg .qdot:focus circle, svg .qdot:hover circle { stroke: var(--obs-uv); stroke-width: 2.5; }

/* ---------- accessibility ---------- */
body.observatory a:focus-visible, body.observatory button:focus-visible { outline: 2px solid var(--obs-uv); outline-offset: 2px; border-radius: 2px; }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--obs-ink); color: var(--obs-bg); padding: 10px 18px; z-index: 999; font-family: var(--sans); font-size: 13px; }
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .paper-shell { grid-template-columns: 1fr; gap: 0; }
  .paper-toc { display: none; }
}
@media (max-width: 640px) {
  .def-pair { grid-template-columns: 1fr; }
  .obs-mast { padding-top: 38px; }
  .obs-questions li { grid-template-columns: 34px 1fr; font-size: 16.5px; }
  .paper-body { font-size: 17px; }
}

/* ---------- print ---------- */
@media print {
  .site-nav, .site-footer, .paper-toc, #readProgress, #deskbar, #deskmsg, #deskHint, .obs-links a.primary { display: none !important; }
  body, body.observatory { background: #fff; color: #000; font-size: 11.5pt; }
  .paper-shell { display: block; max-width: none; padding: 0; }
  .paper-main { max-width: none; }
  .paper-body { color: #111; }
  .figure { box-shadow: none; break-inside: avoid; }
  .paper-head { padding-top: 0; }
  a { color: #000; border-bottom: none; }
  .refs a::after { content: " (" attr(href) ")"; font-size: 9pt; color: #444; }
  .fig-stagerow, .fig-detail { display: none; }
}