/* Ixiom Software — shared stylesheet
   Aesthetic: research-oriented, slightly academic, friendly. Light, simple, low/no icons.
   Structure via type, numbering, hairlines, and whitespace. No icon fonts, no frameworks. */

/* ---------- Design tokens ---------- */
:root {
  /* Ixiom brand palette
     Amber #F5A623 — Ideas in Action · Charcoal #0F172A — Trusted Technology
     Stone #E5E7EB — Clean & Focused · Slate #64748B — Balanced & Modern */
  --amber:       #F5A623;
  --amber-ink:   #B45309;   /* darker amber, readable as text/links on light */
  --charcoal:    #0F172A;
  --stone:       #E5E7EB;
  --slate:       #64748B;

  /* Surfaces + ink */
  --paper:        #FFFFFF;   /* clean background */
  --paper-2:      #F5F6F8;   /* subtle panel (stone-adjacent) */
  --card:         #FFFFFF;   /* raised surfaces */
  --ink:          #0F172A;   /* charcoal — body + headings */
  --ink-soft:     #334155;   /* secondary text */
  --ink-faint:    #64748B;   /* captions, meta (slate) */
  --rule:         #E5E7EB;   /* hairlines / borders (stone) */
  --rule-strong:  #CBD2DC;

  /* Accent (amber) */
  --accent:       #F5A623;   /* graphic accent: the X mark, bars, big stats */
  --accent-ink:   #B45309;   /* text accent: links, small labels (contrast-safe) */
  --accent-soft:  #FEF3E2;   /* amber tint background */

  /* Per-project swatch cue — brand amber */
  --p-anamanti:   #F5A623;
  --p-immediacy:  #F5A623;
  --p-cadora:     #F5A623;
  --p-nexthaul:   #F5A623;
  --p-appsaid:    #F5A623;
  --p-laya:       #F5A623;
  --p-echoshow:   #F5A623;

  --maxw:         72rem;
  --measure:      42rem;   /* ~68 chars for prose */

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono:  ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; /* system only — for genuine code */

  --sp: 1.25rem;
}

/* ---------- Reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }
.prose { max-width: var(--measure); }
section { padding: clamp(3rem, 7vw, 6rem) 0; }
.rule { border: 0; border-top: 1px solid var(--rule); margin: 0; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; line-height: 1.15; color: var(--ink); letter-spacing: -0.01em; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); margin: 0 0 1rem; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); margin: 0 0 0.75rem; }
h3 { font-size: 1.3rem; margin: 0 0 0.5rem; }
p  { margin: 0 0 1rem; color: var(--ink-soft); }
strong { color: var(--ink); font-weight: 600; }
em { font-style: italic; }

.eyebrow, .label {
  font-family: var(--sans);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 0.75rem;
}
.lead { font-family: var(--serif); font-size: clamp(1.15rem, 2.2vw, 1.4rem); line-height: 1.5; color: var(--ink-soft); }
.small { font-size: 0.9rem; }
.muted { color: var(--ink-faint); }

/* Numbered section marker (academic feel, no icons) */
.secnum { font-family: var(--sans); font-size: 0.8rem; color: var(--accent-ink); letter-spacing: 0.1em; text-transform: uppercase; font-weight: 600; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(120%) blur(8px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 4rem; }
.brand { display: inline-flex; align-items: baseline; font-family: var(--sans); font-weight: 700;
  font-size: 1.3rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand .x { color: var(--accent); }
.nav { display: flex; gap: 1.5rem; font-size: 0.95rem; }
.nav a { color: var(--ink-soft); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--accent-ink); text-decoration: none; }
.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(3.5rem, 8vw, 7rem); }
.hero h1 { max-width: 20ch; }
.hero .lead { max-width: 46ch; margin-top: 0.5rem; }
.hero .accent-word { color: var(--accent-ink); font-style: italic; }

/* ---------- Big logo lockup (primary brand) ---------- */
.logo-lockup { margin: 0 0 clamp(1.75rem, 4vw, 2.75rem); }
.logo-word {
  font-family: var(--sans); font-weight: 800; text-transform: uppercase;
  font-size: clamp(3.25rem, 13vw, 7.5rem); line-height: 0.9; letter-spacing: 0.01em;
  color: var(--ink);
}
.logo-word .x { color: var(--accent); }
.logo-tagline {
  font-family: var(--sans); font-weight: 600; text-transform: uppercase;
  font-size: clamp(0.7rem, 2.2vw, 1.05rem); letter-spacing: 0.34em;
  color: var(--slate); margin-top: 0.7rem; padding-left: 0.2em;
}
.logo-tagline .dot { color: var(--accent); font-weight: 700; margin: 0 0.15em; }

/* ---------- Convictions (numbered list) ---------- */
.convictions { display: grid; gap: 0; }
.conviction {
  display: grid; grid-template-columns: 3.5rem 1fr; gap: 1.25rem;
  padding: 1.75rem 0; border-top: 1px solid var(--rule);
}
.conviction:last-child { border-bottom: 1px solid var(--rule); }
.conviction .n { font-family: var(--sans); font-weight: 700; color: var(--accent-ink); font-size: 1rem; padding-top: 0.35rem; }
.conviction h3 { margin-bottom: 0.35rem; }
.conviction .proof { font-size: 0.9rem; color: var(--ink-faint); margin-top: 0.5rem; }
.conviction .proof a { color: var(--accent-ink); }

/* ---------- Work grid ---------- */
.cluster-label { font-family: var(--sans); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); margin: 2.5rem 0 1rem; }
.work-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: 1rem; }
.card {
  display: block; background: var(--card); border: 1px solid var(--rule);
  border-radius: 10px; padding: 1.4rem 1.4rem 1.25rem; color: var(--ink);
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { text-decoration: none; border-color: var(--rule-strong); transform: translateY(-2px); }
@media (prefers-reduced-motion: reduce) { .card:hover { transform: none; } }
.card .swatch { width: 1.75rem; height: 0.35rem; border-radius: 3px; margin-bottom: 0.9rem; }
.card h3 { font-size: 1.15rem; margin-bottom: 0.3rem; }
.card p { font-size: 0.92rem; margin-bottom: 0.9rem; }
.card .meta { font-family: var(--sans); font-size: 0.7rem; letter-spacing: 0.06em; color: var(--ink-faint); text-transform: uppercase; }

/* Featured (flagship) card spans wider */
.card.featured { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr; gap: 0.5rem; }
@media (min-width: 48rem) { .card.featured { grid-template-columns: 1.4fr 1fr; gap: 2rem; align-items: center; } }
.card.featured h3 { font-family: var(--serif); font-size: 1.6rem; }

/* Tags */
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.75rem 0 0; }
.tag { font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.04em; color: var(--ink-soft);
  background: var(--paper-2); border: 1px solid var(--rule); border-radius: 999px; padding: 0.15rem 0.6rem; }
.tag.frontier { color: var(--amber-ink); background: var(--accent-soft); border-color: transparent; }
.tag.applied  { color: var(--slate); background: var(--paper-2); border-color: var(--rule); }
.tag.oss      { color: var(--ink-soft); }

/* ---------- Panels ---------- */
.panel { background: var(--paper-2); border-radius: 12px; padding: clamp(1.5rem, 4vw, 2.75rem); }
.two-col { display: grid; gap: 2rem; }
@media (min-width: 48rem) { .two-col { grid-template-columns: 1fr 1fr; gap: 3rem; } }

/* ---------- Tables (benchmark data as ornament) ---------- */
.data { width: 100%; border-collapse: collapse; font-size: 0.92rem; margin: 1.25rem 0; }
.data caption { text-align: left; font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); padding-bottom: 0.6rem; }
.data th, .data td { text-align: right; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--rule); }
.data th:first-child, .data td:first-child { text-align: left; }
.data thead th { color: var(--ink-faint); font-family: var(--sans); font-weight: 500; font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; }
.data td.win { color: var(--amber-ink); font-weight: 600; }
.data tbody tr:last-child td { border-bottom: 1px solid var(--rule-strong); }

/* ---------- Stat row ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: 1.5rem; margin: 1.5rem 0; }
.stat .num { font-family: var(--serif); font-size: clamp(1.8rem, 4vw, 2.6rem); color: var(--accent); line-height: 1; }
.stat .cap { font-size: 0.85rem; color: var(--ink-faint); margin-top: 0.4rem; }

/* ---------- Callout / aside (footnote-like) ---------- */
.aside { border-left: 2px solid var(--accent); padding: 0.25rem 0 0.25rem 1.25rem; color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- CTA / contact ---------- */
.contact a.email { font-family: var(--serif); font-size: clamp(1.4rem, 3vw, 2rem); color: var(--accent-ink); }

/* ---------- Buttons / links ---------- */
.btn-row { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.25rem; }
.link-arrow { font-family: var(--sans); font-size: 0.85rem; letter-spacing: 0.04em; }
.link-arrow::after { content: " \2192"; }

/* Back link */
.back { font-family: var(--sans); font-size: 0.8rem; letter-spacing: 0.04em; color: var(--ink-faint); }

/* Project hero meta */
.proj-hero { display: flex; align-items: center; gap: 1rem; margin-bottom: 0.5rem; }
.proj-hero .swatch { width: 2.5rem; height: 0.4rem; border-radius: 3px; }
.integrations { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; }

/* Writing list */
.post-list { list-style: none; padding: 0; margin: 0; }
.post-list li { border-top: 1px solid var(--rule); padding: 1.25rem 0; }
.post-list li:last-child { border-bottom: 1px solid var(--rule); }
.post-list .date { font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.08em; color: var(--ink-faint); text-transform: uppercase; }
.post-list h3 { margin: 0.3rem 0 0.35rem; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--rule); padding: 2.5rem 0; color: var(--ink-faint); font-size: 0.9rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: baseline; }
.site-footer a { color: var(--ink-soft); }

/* ---------- Reveal on scroll (subtle, opt-out) ---------- */
.reveal { opacity: 0; transform: translateY(8px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- Responsive nav ---------- */
@media (max-width: 40rem) {
  .nav { gap: 1rem; font-size: 0.85rem; }
  .conviction { grid-template-columns: 2.25rem 1fr; gap: 0.75rem; }
}