/* =========================================================================
   PNS · Research Folio — research-terminal redesign (mock)
   Bloomberg-inspired: deep black, off-white, graphite, muted amber/blue/green.
   No glass, no glow, no motion. Dense, structured, finance-readable. Inter.
   ========================================================================= */

:root {
  --bg: #0a0a0b;
  --panel: #111114;
  --panel-2: #17171c;
  --line: rgba(255, 255, 255, 0.11);
  --line-2: rgba(255, 255, 255, 0.2);

  --ink: #efeee8;        /* off-white — primary text */
  --muted: #b4b4ac;      /* graphite — body secondary (raised for contrast) */
  --faint: #909086;      /* labels / captions (raised for contrast) */

  --amber: #e6a93f;
  --amber-dim: #c08a2c;
  --green: #5cb47e;
  --blue: #7db0dd;
  --red: #cf6257;

  --maxw: 1180px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);

  font-synthesis-weight: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "EB Garamond", Garamond, Georgia, serif;
  font-size: 15.5px;
  line-height: 1.6;
  letter-spacing: -0.01em;
  overflow-x: hidden;
}

/* Faint static graphite grid (no motion). */
.backdrop {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.016) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.016) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(140ch 90ch at 50% -10%, #000 35%, transparent 85%);
  -webkit-mask-image: radial-gradient(140ch 90ch at 50% -10%, #000 35%, transparent 85%);
}

.wrap { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }
.label { font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--amber); font-weight: 600; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
/* Visually hidden until keyboard focus. */
.skip { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip:focus { position: fixed; left: 1rem; top: 1rem; width: auto; height: auto; clip: auto; padding: 0.55rem 0.9rem; background: var(--panel); border: 1px solid var(--line-2); z-index: 100; }

/* Top bar ---------------------------------------------------------------- */
.topbar { position: sticky; top: 0; z-index: 50; background: rgba(10, 10, 11, 0.94); border-bottom: 1px solid var(--line); }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; padding: 0.7rem 0; }
.brand { font-weight: 600; font-size: 0.9rem; letter-spacing: 0.02em; text-decoration: none; }
.brand em { color: var(--amber); font-style: normal; }
.topnav { display: flex; gap: 1.6rem; font-size: 0.82rem; }
.topnav a { color: var(--muted); text-decoration: none; padding-bottom: 2px; border-bottom: 1px solid transparent; transition: color 0.2s var(--ease), border-color 0.2s var(--ease); }
.topnav a:hover, .topnav a:focus-visible { color: var(--ink); border-color: var(--amber); }

/* Hero ------------------------------------------------------------------- */
.hero { min-height: 70vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 4.5rem 0 2.5rem; }
.hero .label { margin-bottom: 1.3rem; }
.hero-title { margin: 0; font-weight: 600; letter-spacing: -0.035em; line-height: 1.02; font-size: clamp(2.5rem, 7vw, 4.4rem); color: var(--ink); }
.hero-subtitle { margin: 1.05rem 0 0; font-size: clamp(0.92rem, 2.2vw, 1.08rem); color: var(--muted); font-weight: 500; letter-spacing: 0.02em; }
.hero-subtitle .sep { color: var(--amber); padding: 0 0.35em; }
.hero-meta { margin: 1.1rem 0 0; font-size: clamp(0.82rem, 1.8vw, 0.95rem); letter-spacing: 0.04em; color: var(--muted); }
.hero-projects { margin: 0.7rem 0 0; font-size: clamp(0.82rem, 1.8vw, 0.95rem); letter-spacing: 0.06em; color: var(--faint); }
.hero-projects b { color: var(--ink); font-weight: 600; }

/* Project full-page header + back link */
.page-header { padding: 3.5rem 0 2.2rem; border-bottom: 1px solid var(--line); }
.page-header .plate-no { color: var(--faint); }
.page-header h1 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); font-weight: 600; letter-spacing: -0.03em; margin: 0.5rem 0 0; }
.page-header .lede { color: var(--muted); margin: 0.7rem 0 0; max-width: 65ch; }
.page-header .ph-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 1.3rem; margin-top: 1.3rem; }
.backlink { font-size: 0.8rem; color: var(--blue); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.2s var(--ease); }
.backlink:hover, .backlink:focus-visible { border-color: var(--blue); }

/* "Open full page" link on each index plate */
.plate-open { display: inline-flex; align-items: center; gap: 0.45rem; margin-top: 1.3rem; font-size: 0.82rem; font-weight: 600; letter-spacing: 0.04em; color: var(--amber); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.2s var(--ease); }
.plate-open:hover, .plate-open:focus-visible { border-color: var(--amber); }

/* Ticker filter (Caligula quality ledger) */
.ticker { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.9rem; }
.ticker label { font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); }
.ticker input { background: var(--panel); border: 1px solid var(--line-2); color: var(--ink); font: inherit; font-size: 0.85rem; padding: 0.4rem 0.65rem; border-radius: 2px; width: 12rem; text-transform: uppercase; }
.ticker input::placeholder { color: var(--faint); text-transform: none; }
tr.tk-hide { display: none; }

/* Evidence ribbon -------------------------------------------------------- */
.evidence { display: flex; flex-wrap: wrap; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 2rem; }
.evidence div { flex: 1 1 0; min-width: 150px; background: var(--panel); padding: 0.85rem 1rem; }
.evidence .v { font-size: 1.15rem; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.evidence .k { display: block; font-size: 0.64rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); margin-top: 0.15rem; }

/* Sections --------------------------------------------------------------- */
.section { padding: clamp(3.5rem, 8vw, 5.5rem) 0; border-top: 1px solid var(--line); }
.section.project-detail { border-top: 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1.8rem; flex-wrap: wrap; }
.section-title { font-size: clamp(1.5rem, 3.6vw, 2rem); font-weight: 600; letter-spacing: -0.03em; margin: 0.35rem 0 0; }
.section-note { font-size: 0.78rem; color: var(--faint); }

/* Work — stacked research plates ----------------------------------------- */
.work { display: flex; flex-direction: column; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.card { background: var(--panel); }
.card.open { background: var(--panel-2); }
.card-head {
  width: 100%; text-align: left; background: transparent; color: inherit; font: inherit; cursor: pointer;
  border: 0; border-left: 3px solid transparent;
  padding: 1.3rem 1.4rem; display: grid; grid-template-columns: 1fr auto; gap: 0.4rem 1.5rem; align-items: center;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.card-head:hover { background: var(--panel-2); }
.card.open .card-head, .card-head:hover { border-left-color: var(--amber); }
.card-id { grid-column: 1; display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap; }
.card-plate { font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--faint); }
.card-title { font-size: 1.18rem; font-weight: 600; letter-spacing: -0.02em; margin: 0; }
.card-thesis { grid-column: 1; color: var(--muted); font-size: 0.92rem; margin: 0; }
.card-meta { grid-column: 2; grid-row: 1 / span 2; display: flex; flex-direction: column; align-items: flex-end; gap: 0.7rem; }
.card-metrics { display: flex; gap: 1.3rem; flex-wrap: wrap; justify-content: flex-end; }
.metric { display: flex; flex-direction: column; align-items: flex-end; }
.metric .v { font-size: 1.05rem; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.metric .k { font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); }

.status { font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 600; padding: 0.22rem 0.5rem; border: 1px solid var(--line-2); border-radius: 2px; white-space: nowrap; color: var(--muted); }
.status.s-validated { color: var(--green); border-color: rgba(92, 180, 126, 0.55); }
.status.s-audited { color: var(--amber); border-color: rgba(230, 169, 63, 0.55); }
.status.s-dev { color: var(--blue); border-color: rgba(125, 176, 221, 0.55); }
.status.s-mvp, .status.s-public { color: var(--ink); }

.expand-ctl { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--amber); font-weight: 600; }
.expand-ctl .chev { transition: transform 0.25s var(--ease); }
.card.open .expand-ctl .chev { transform: rotate(90deg); }

/* expandable body -------------------------------------------------------- */
.card-detail { display: none; border-top: 1px solid var(--line); border-left: 3px solid var(--amber); }
.card.open .card-detail { display: block; }

/* tabs */
.tabs { display: flex; flex-wrap: wrap; gap: 0; border-bottom: 1px solid var(--line); padding: 0 1.4rem; background: rgba(255,255,255,0.015); }
.tab { background: transparent; border: 0; border-bottom: 2px solid transparent; color: var(--muted); font: inherit; font-size: 0.78rem; letter-spacing: 0.04em; padding: 0.85rem 0.9rem; cursor: pointer; transition: color 0.2s var(--ease), border-color 0.2s var(--ease); }
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { color: var(--amber); border-bottom-color: var(--amber); }
.tabpanel { display: none; padding: 1.5rem 1.4rem; }
.tabpanel.active { display: block; }

/* prose */
.prose { max-width: 70ch; }
.prose .ptag { font-size: 0.66rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--amber); font-weight: 600; display: block; margin-bottom: 0.25rem; }
.prose p { margin: 0 0 1.2rem; color: var(--muted); }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--ink); font-weight: 600; }

/* tables */
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); }
table.data { width: 100%; border-collapse: collapse; font-size: 0.9rem; font-variant-numeric: tabular-nums; }
table.data caption { text-align: left; font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--amber); padding: 0.75rem 0.95rem; border-bottom: 1px solid var(--line); }
table.data th, table.data td { padding: 0.6rem 0.95rem; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.data td { color: var(--ink); }
table.data thead th { font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); font-weight: 600; background: rgba(255,255,255,0.03); }
table.data tbody tr:nth-child(even) { background: rgba(255, 255, 255, 0.018); }
table.data tbody tr:hover { background: rgba(230, 169, 63, 0.06); }
table.data td.num, table.data th.num { text-align: right; }
table.data .tier { font-weight: 600; }
.t-B { color: var(--green); } .t-C { color: var(--amber); } .t-D { color: var(--red); }
.hi td { background: rgba(230, 169, 63, 0.1) !important; }

/* "what this means" callout */
.means { margin-top: 1rem; border-left: 2px solid var(--amber); background: rgba(230, 169, 63, 0.05); padding: 0.7rem 1rem; font-size: 0.85rem; color: var(--ink); }
.means b { color: var(--amber); font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.66rem; display: block; margin-bottom: 0.2rem; }

/* method / component cards */
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.mini { background: var(--panel); padding: 1rem 1.1rem; }
.mini .n { font-size: 0.66rem; letter-spacing: 0.14em; color: var(--amber-dim); font-weight: 600; }
.mini h5 { margin: 0.3rem 0 0.4rem; font-size: 0.92rem; font-weight: 600; }
.mini p { margin: 0; font-size: 0.82rem; color: var(--muted); }

/* key/value ledger */
.kv { display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 1.5rem; font-size: 0.9rem; border: 1px solid var(--line); padding: 1rem 1.1rem; }
.kv dt { color: var(--faint); }
.kv dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }

/* gates */
.gates { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.gate { font-size: 0.76rem; padding: 0.3rem 0.65rem; border: 1px solid rgba(92,180,126,0.4); border-radius: 2px; color: var(--green); }
.gate::before { content: "✓ "; }

/* links row */
.links { display: flex; flex-wrap: wrap; gap: 1.3rem; }
.links a, .links span { font-size: 0.85rem; color: var(--blue); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.2s var(--ease); }
.links a:hover, .links a:focus-visible { border-color: var(--blue); }
.links .priv { color: var(--faint); }
.subhead { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--amber); margin: 0 0 0.7rem; font-weight: 600; }
.subhead.spaced { margin-top: 1.5rem; }
.stack > * + * { margin-top: 1.5rem; }

/* Compact method note (de-emphasised, below the four project plates) ------ */
.method-note { margin-top: 1.1rem; border: 1px solid var(--line); border-left: 2px solid var(--line-2); background: var(--panel); padding: 0.9rem 1.1rem; display: flex; gap: 0.9rem; align-items: baseline; flex-wrap: wrap; }
.method-note .mn-label { font-size: 0.66rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--faint); font-weight: 600; white-space: nowrap; }
.method-note p { margin: 0; font-size: 0.86rem; color: var(--muted); max-width: 80ch; }
.method-note strong { color: var(--ink); font-weight: 600; }

/* About ------------------------------------------------------------------ */
.about-grid { display: grid; grid-template-columns: 1.4fr 0.9fr; gap: 2.2rem; align-items: start; }
.memo { border: 1px solid var(--line); border-left: 3px solid var(--amber); background: var(--panel); padding: 1.7rem; }
.memo p { font-size: clamp(1rem, 2vw, 1.1rem); color: var(--ink); margin: 0 0 1rem; line-height: 1.7; }
.memo p:last-child { margin-bottom: 0; }
.memo strong { font-weight: 600; }
.facts { border: 1px solid var(--line); background: var(--panel); }
.fact { padding: 1rem 1.2rem; border-bottom: 1px solid var(--line); }
.fact:last-child { border-bottom: 0; }
.fact h4 { margin: 0 0 0.3rem; font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--amber); }
.fact p { margin: 0; font-size: 0.88rem; color: var(--muted); }

/* Footer ----------------------------------------------------------------- */
.colophon { border-top: 1px solid var(--line); padding: clamp(3rem, 7vw, 4.5rem) 0 3rem; }
.contact-lead { color: var(--muted); max-width: 60ch; margin: 0.6rem 0 2rem; }
.social { display: flex; flex-wrap: wrap; gap: clamp(1.5rem, 6vw, 3.5rem); margin-bottom: 2.2rem; }
.social a { font-size: clamp(1.4rem, 4.5vw, 2.2rem); font-weight: 600; letter-spacing: -0.03em; text-decoration: none; color: var(--ink); border-bottom: 2px solid transparent; transition: border-color 0.2s var(--ease), color 0.2s var(--ease); }
.social a:hover, .social a:focus-visible { border-color: var(--amber); color: #fff; }
.colo-base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; padding-top: 1.6rem; border-top: 1px solid var(--line); font-size: 0.78rem; color: var(--faint); }
.colo-base .legal { max-width: 62ch; }

/* Responsive ------------------------------------------------------------- */
@media (max-width: 820px) {
  .cards-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .card-head { grid-template-columns: 1fr; }
  .card-meta { grid-column: 1; grid-row: auto; align-items: flex-start; }
  .card-metrics { justify-content: flex-start; }
  .metric { align-items: flex-start; }
  .kv dd { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}