/* ==========================================================================
   Omutwar Lab — shared design system
   Used by index.html and every page in /case-studies/
   ========================================================================== */

:root {
  --ink: #0B1120;
  --ink-2: #0F1830;
  --paper: #EDF1F7;
  --slate: #8592A6;
  --slate-dim: #5C6779;
  --line: #1D2A3D;
  --signal: #F0A93A;
  --signal-dim: rgba(240, 169, 58, 0.14);
  --violet: #8B6FE8;
  --violet-dim: rgba(139, 111, 232, 0.14);
  --success: #4ADE80;
  --danger: #F0654A;
  --display: 'Space Grotesk', sans-serif;
  --body: 'Public Sans', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 28px; }

/* ---------- NAV ---------- */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 920px; margin: 0 auto; padding: 18px 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-mark { font-family: var(--mono); font-size: 14px; letter-spacing: 0.02em; color: var(--slate); }
.nav-mark strong { color: var(--paper); font-weight: 500; }
.nav-mark a { text-decoration: none; }
.nav-back {
  font-size: 13px; color: var(--slate); text-decoration: none;
  border: 1px solid var(--line); padding: 7px 14px; border-radius: 6px;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.nav-back:hover { border-color: var(--signal); color: var(--paper); }

/* ---------- HERO ---------- */
.hero { padding: 84px 0 56px; }
.eyebrow {
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--signal);
  display: flex; align-items: center; gap: 10px; margin-bottom: 22px;
}
.eyebrow::before {
  content: ''; width: 7px; height: 7px; border-radius: 50%;
  background: var(--signal); box-shadow: 0 0 0 4px var(--signal-dim);
}
h1 {
  font-family: var(--display); font-weight: 600;
  font-size: clamp(2.1rem, 4.6vw, 3.2rem); line-height: 1.12; letter-spacing: -0.01em;
  color: var(--paper); max-width: 17ch;
}
h1 em { font-style: normal; color: var(--signal); }
.sub { margin-top: 22px; font-size: 17px; color: var(--slate); max-width: 56ch; }

/* ---------- SECTIONS ---------- */
section.block { padding: 64px 0; border-top: 1px solid var(--line); }
.kicker {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--slate); margin-bottom: 18px;
}
h2 {
  font-family: var(--display); font-weight: 600;
  font-size: clamp(1.4rem, 2.6vw, 1.8rem); color: var(--paper);
  margin-bottom: 20px; max-width: 30ch;
}
.lede { font-size: 16px; color: var(--slate); max-width: 62ch; margin-bottom: 8px; }

/* ---------- PIPELINE DIAGRAM ---------- */
.pipeline-frame {
  margin-top: 56px; border: 1px solid var(--line); border-radius: 14px;
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
  padding: 36px 20px 28px; overflow-x: auto;
}
.pipeline-caption {
  font-family: var(--mono); font-size: 11.5px; color: var(--slate-dim);
  text-align: center; margin-top: 18px; letter-spacing: 0.03em;
}
svg.pipeline { display: block; margin: 0 auto; min-width: 640px; width: 100%; height: auto; }
.node-box { fill: var(--ink-2); stroke: var(--line); stroke-width: 1.4; }
.node-box.active { stroke: var(--signal); }
.node-label { font-family: var(--mono); font-size: 12.5px; fill: var(--paper); }
.node-sub { font-family: var(--mono); font-size: 9.5px; fill: var(--slate); }
.flow-line {
  stroke: var(--slate-dim); stroke-width: 1.6; fill: none;
  stroke-dasharray: 5 5; animation: dash 1.6s linear infinite;
}
@keyframes dash { to { stroke-dashoffset: -20; } }
.flow-arrow { fill: var(--slate-dim); }

/* ---------- APPROACH LIST ---------- */
.approach-list { margin-top: 28px; display: flex; flex-direction: column; }
.approach-item {
  display: grid; grid-template-columns: 28px 1fr; gap: 18px;
  padding: 20px 0; border-top: 1px solid var(--line);
}
.approach-item:first-child { border-top: none; }
.approach-icon {
  width: 8px; height: 8px; border-radius: 50%; background: var(--violet);
  margin-top: 8px; box-shadow: 0 0 0 4px var(--violet-dim);
}
.approach-item h3 { font-family: var(--body); font-weight: 600; font-size: 15.5px; color: var(--paper); margin-bottom: 6px; }
.approach-item p { font-size: 14.5px; color: var(--slate); max-width: 58ch; }

/* ---------- TERMINAL CARDS ---------- */
.terms { margin-top: 32px; display: grid; gap: 18px; }
.term-card { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: #080D19; }
.term-head {
  display: flex; align-items: center; gap: 8px; padding: 10px 16px;
  border-bottom: 1px solid var(--line); background: var(--ink-2);
}
.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot.r { background: var(--danger); }
.dot.y { background: var(--signal); }
.dot.g { background: var(--success); }
.term-title { font-family: var(--mono); font-size: 12px; color: var(--slate); margin-left: 6px; }
.term-body { padding: 18px 20px 20px; font-family: var(--mono); font-size: 13px; line-height: 1.65; }
.term-body .err { color: var(--danger); }
.term-body .ok { color: var(--success); }
.term-body .muted { color: var(--slate-dim); }
.term-note {
  margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line);
  font-family: var(--body); font-size: 13.5px; color: var(--slate);
}

/* ---------- OUTCOME GRID ---------- */
.outcome-grid {
  margin-top: 28px; display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
}
.outcome-cell { background: var(--ink); padding: 24px 22px; }
.outcome-cell .tag { font-family: var(--mono); font-size: 11px; color: var(--signal); letter-spacing: 0.04em; margin-bottom: 8px; }
.outcome-cell .desc { font-size: 14px; color: var(--slate); }

/* ---------- CASE STUDY CARDS (landing page) ---------- */
.study-grid { margin-top: 32px; display: flex; flex-direction: column; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.study-card {
  background: var(--ink); padding: 26px 26px; text-decoration: none; display: block;
  transition: background 0.15s ease;
}
.study-card:hover { background: var(--ink-2); }
.study-card .study-meta {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--signal); margin-bottom: 10px; display: flex; gap: 10px; align-items: center;
}
.study-card h3 { font-family: var(--display); font-weight: 600; font-size: 19px; color: var(--paper); margin-bottom: 8px; }
.study-card p { font-size: 14px; color: var(--slate); max-width: 60ch; }
.study-card .arrow { float: right; color: var(--slate-dim); font-family: var(--mono); }
.study-card.upcoming { opacity: 0.5; cursor: default; pointer-events: none; }
.study-card.upcoming .study-meta { color: var(--slate-dim); }

/* ---------- FOOTER / CTA ---------- */
footer { padding: 64px 0 72px; border-top: 1px solid var(--line); }
.cta-box { border: 1px solid var(--line); border-radius: 14px; padding: 40px 32px; background: var(--ink-2); text-align: center; }
.cta-box h2 { max-width: none; }
.cta-box .lede { margin: 0 auto 26px; }
.cta-btn {
  display: inline-block; font-family: var(--mono); font-size: 13.5px; color: var(--ink);
  background: var(--signal); padding: 12px 26px; border-radius: 7px; text-decoration: none;
  font-weight: 600; transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.cta-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(240,169,58,0.25); }
.foot-meta { margin-top: 28px; font-family: var(--mono); font-size: 11.5px; color: var(--slate-dim); }

/* ---------- REVEAL ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .flow-line { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}
@media (max-width: 640px) {
  .hero { padding: 56px 0 40px; }
  section.block { padding: 48px 0; }
}
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }