/* Capability-Driven Design — capabilitydriven.tech
   Part of the christianmacedo.io / helixchain.tech product family:
   Inter tight sans, dot-pill badges, rounded-2xl soft cards,
   restrained two-neutral + one-accent palette. Own accent: deep indigo. */

:root {
  --bg: #f7f4ef;          /* warm paper — twins christianmacedo.io */
  --bg-elev: #ffffff;
  --bg-sunken: #efeae1;
  --ink: #1b1a17;
  --ink-soft: #56524b;
  --ink-faint: #8b857b;
  --line: #e7e2d9;
  --line-strong: #d7d1c5;
  --accent: #4a3f9e;      /* deep indigo — this product's own accent */
  --accent-soft: #6f63c9;
  --accent-ink: #3a3080;  /* darker indigo for small text on paper */
  --accent-wash: #eeecf8;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", "Menlo", "Consolas", monospace;
  --maxw: 1080px;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(27, 26, 23, 0.04), 0 14px 30px -16px rgba(27, 26, 23, 0.14);
  --shadow-lg: 0 2px 4px rgba(27, 26, 23, 0.05), 0 24px 48px -20px rgba(27, 26, 23, 0.18);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- Dot-pill badge (family signature) ---------- */
.badge, .section-num, .hero .eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 6px 15px 6px 13px; border-radius: 999px;
  border: 1px solid var(--line-strong); background: var(--bg-elev);
  font-size: 13px; font-weight: 500; letter-spacing: 0; text-transform: none;
  color: var(--ink-soft); font-family: var(--sans); line-height: 1;
}
.badge::before, .section-num::before, .hero .eyebrow::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); flex: none;
}

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(12px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 62px;
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 600; letter-spacing: -0.02em; color: var(--ink); font-size: 1.02rem; }
.brand:hover { text-decoration: none; }
.brand .glyph { width: 27px; height: 27px; flex: none; border-radius: 8px; }
.glyph .bg { fill: var(--accent); }
.brand .dot { color: var(--accent); }
.navlinks { display: flex; gap: 26px; font-size: 14px; }
.navlinks a { color: var(--ink-soft); }
.navlinks a:hover { color: var(--accent-ink); text-decoration: none; }
@media (max-width: 720px) { .navlinks { display: none; } }

/* ---------- Hero ---------- */
.hero { padding: 96px 0 68px; border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.hero .eyebrow { margin: 0 0 24px; }
.hero h1 {
  font-family: var(--sans);
  font-size: clamp(2.6rem, 6.6vw, 4.5rem);
  line-height: 1.02; letter-spacing: -0.035em; font-weight: 600;
  margin: 0 0 24px; max-width: 15ch;
}
.hero .lede { font-size: clamp(1.1rem, 2.4vw, 1.38rem); color: var(--ink-soft); max-width: 60ch; margin: 0 0 36px; line-height: 1.5; letter-spacing: -0.01em; }
.hero .cta { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 11px; font-size: 15px; font-weight: 550;
  border: 1px solid var(--line-strong); color: var(--ink); background: var(--bg-elev);
  transition: border-color .15s, background .15s, transform .05s; box-shadow: var(--shadow);
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.primary:hover { background: var(--accent-soft); border-color: var(--accent-soft); }

/* ---------- Section scaffolding ---------- */
section { padding: 80px 0; border-bottom: 1px solid var(--line); }
.section-head { max-width: 66ch; margin-bottom: 46px; }
h2 {
  font-family: var(--sans); font-weight: 600;
  font-size: clamp(1.85rem, 4vw, 2.65rem); line-height: 1.08; letter-spacing: -0.03em;
  margin: 18px 0 18px;
}
.section-head p { font-size: 1.12rem; color: var(--ink-soft); margin: 0; letter-spacing: -0.005em; }
h3 { font-size: 1.15rem; letter-spacing: -0.015em; margin: 0 0 8px; font-weight: 600; }

.lead-quote {
  font-family: var(--sans); font-size: clamp(1.5rem, 3.2vw, 2.15rem);
  line-height: 1.22; letter-spacing: -0.03em; font-weight: 600; max-width: 22ch;
  border-left: 3px solid var(--accent); padding-left: 24px; margin: 0 0 42px;
}
.lead-quote .hl { color: var(--accent); }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 20px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.four { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 820px) { .grid.two, .grid.three, .grid.four { grid-template-columns: 1fr; } }

.card {
  background: linear-gradient(158deg, #ffffff 0%, #fbf9f5 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius); padding: 25px 24px 23px; box-shadow: var(--shadow);
}
.card .tag {
  font-size: 12px; font-weight: 600; letter-spacing: -0.005em;
  color: var(--accent-ink); display: block; margin-bottom: 12px;
}
.card p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }
.card p + p { margin-top: 10px; }

/* Numbered bundle list */
.bundle { display: grid; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.bundle .row {
  display: grid; grid-template-columns: 54px 1fr; gap: 20px;
  padding: 23px 26px; background: var(--bg-elev); align-items: baseline;
}
.bundle .row + .row { border-top: 1px solid var(--line); }
.bundle .n { font-family: var(--sans); font-weight: 600; font-size: 1.6rem; color: var(--accent); line-height: 1; letter-spacing: -0.03em; }
.bundle .row h3 { margin: 0 0 4px; }
.bundle .row p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

/* Promotion test */
.test-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 820px) { .test-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .test-grid { grid-template-columns: 1fr; } }
.test {
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 23px 21px; box-shadow: var(--shadow);
}
.test .chk {
  width: 30px; height: 30px; border-radius: 9px; background: var(--accent-wash);
  color: var(--accent-ink); display: flex; align-items: center; justify-content: center;
  font-weight: 700; margin-bottom: 14px; font-size: 0.95rem;
}
.test h3 { font-size: 1.02rem; }
.test p { margin: 6px 0 0; font-size: 0.92rem; color: var(--ink-soft); }
.rule-callout {
  margin-top: 26px; padding: 24px 28px; border-radius: var(--radius);
  background: var(--accent-wash); border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
}
.rule-callout strong { color: var(--accent-ink); }
.rule-callout p { margin: 0; }
.rule-callout p + p { margin-top: 10px; color: var(--ink-soft); }

/* Invariants */
.inv { display: grid; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.inv .item { display: grid; grid-template-columns: 44px 1fr; gap: 18px; padding: 21px 26px; background: var(--bg-elev); }
.inv .item + .item { border-top: 1px solid var(--line); }
.inv .k { font-family: var(--mono); color: var(--accent); font-size: 0.95rem; }
.inv .item h3 { font-size: 1.02rem; margin: 0 0 4px; }
.inv .item p { margin: 0; color: var(--ink-soft); font-size: 0.96rem; }
.inv code { font-family: var(--mono); font-size: 0.85em; background: var(--bg-sunken); padding: 1px 6px; border-radius: 5px; color: var(--ink); }

/* Communication paths */
.paths { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 8px; }
@media (max-width: 720px) { .paths { grid-template-columns: 1fr; } }
.path { display: flex; gap: 16px; align-items: flex-start; padding: 21px 23px; background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.path .arrow { font-family: var(--mono); font-size: 0.82rem; color: var(--accent); white-space: nowrap; padding-top: 2px; }
.path h3 { font-size: 1rem; }
.path p { margin: 4px 0 0; font-size: 0.93rem; color: var(--ink-soft); }

/* Artifacts */
.artgroup { margin-bottom: 34px; }
.artgroup > h3 {
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.02em; text-transform: uppercase;
  color: var(--accent-ink); border-bottom: 1px solid var(--line); padding-bottom: 10px; margin-bottom: 18px;
}
.artlist { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 28px; }
@media (max-width: 720px) { .artlist { grid-template-columns: 1fr; } }
.art { display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: baseline; padding: 6px 0; }
.art .name { font-family: var(--mono); font-size: 0.86rem; color: var(--accent); white-space: nowrap; }
.art .desc { color: var(--ink-soft); font-size: 0.95rem; }

/* ID table */
.idtable { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.idtable th, .idtable td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.idtable th { font-size: 11.5px; letter-spacing: 0.02em; text-transform: uppercase; color: var(--ink-faint); font-weight: 600; }
.idtable td:first-child { font-family: var(--mono); color: var(--accent); white-space: nowrap; }
.idtable td:last-child { font-family: var(--mono); color: var(--ink-faint); font-size: 0.85rem; }
.tablescroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); background: var(--bg-elev); }

/* Pipeline */
.phases { display: grid; gap: 18px; }
.phase { display: grid; grid-template-columns: 130px 1fr; gap: 26px; padding: 27px; background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
@media (max-width: 720px) { .phase { grid-template-columns: 1fr; gap: 12px; } }
.phase .label { font-size: 0.8rem; font-weight: 600; letter-spacing: -0.005em; color: var(--accent-ink); }
.phase .label .big { display: block; font-family: var(--sans); font-size: 2.3rem; font-weight: 600; color: var(--ink); letter-spacing: -0.04em; margin-top: 4px; }
.phase h3 { margin: 0 0 6px; }
.phase p { margin: 0 0 12px; color: var(--ink-soft); font-size: 0.97rem; }
.phase ul { margin: 0; padding-left: 18px; color: var(--ink-soft); font-size: 0.94rem; }
.phase ul li { margin: 3px 0; }
.gate {
  display: flex; align-items: center; gap: 12px; padding: 14px 24px; margin: 2px 0;
  font-size: 0.9rem; color: var(--ink-soft);
  background: var(--accent-wash); border-radius: 12px; border: 1px solid color-mix(in srgb, var(--accent) 16%, transparent);
}
.gate b { color: var(--accent-ink); font-weight: 600; }

/* Capability slice figure (Philosophy) */
.slice-fig {
  margin: 46px 0 0; padding: 24px 28px 22px;
  background: linear-gradient(158deg, #ffffff 0%, #fbf9f5 100%);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.slice-cap { display: grid; font-weight: 600; font-size: 0.98rem; letter-spacing: -0.012em; margin: 0 0 12px 2px; }
.slice-cap span { grid-area: 1 / 1; }
.slice-fig svg { display: block; width: 100%; height: auto; }
.slice-fig figcaption { margin: 18px 2px 0; color: var(--ink-soft); font-size: 0.96rem; max-width: 64ch; }
.slice-fig .lane { fill: var(--bg-elev); stroke: var(--line); stroke-width: 1.5; }
.slice-fig .lbl { fill: var(--ink); font-family: var(--sans); font-size: 14px; }
.slice-fig .db { fill: var(--bg-sunken); stroke: var(--line-strong); stroke-width: 1.5; }
.slice-fig .svc { fill: var(--bg-sunken); stroke: var(--line); stroke-width: 1.5; }
.slice-fig .conn { stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; }
.slice-fig .hl { stroke: currentColor; stroke-width: 2; }
.slice-fig .dbhl { fill: var(--bg-sunken); stroke: currentColor; stroke-width: 2; }
.slice-fig .act { opacity: 0; }
.slice-fig .colA, .slice-fig .lblA { animation: sljl 10s linear infinite; }
.slice-fig .colB, .slice-fig .lblB { animation: sljl 10s linear infinite; animation-delay: -5s; }
.slice-fig .aA1 { animation: slA1 10s linear infinite; }
.slice-fig .aA2 { animation: slA2 10s linear infinite; }
.slice-fig .aA4 { animation: slA4 10s linear infinite; }
.slice-fig .aB2 { animation: slB2 10s linear infinite; }
.slice-fig .aB3 { animation: slB3 10s linear infinite; }
.slice-fig .aB5 { animation: slB5 10s linear infinite; }
@keyframes sljl { 0% { opacity: 1 } 46% { opacity: 1 } 50% { opacity: 0 } 96% { opacity: 0 } 100% { opacity: 1 } }
@keyframes slA1 { 0%,2% { opacity: 0 } 7% { opacity: 1 } 44% { opacity: 1 } 48%,100% { opacity: 0 } }
@keyframes slA2 { 0%,10% { opacity: 0 } 15% { opacity: 1 } 44% { opacity: 1 } 48%,100% { opacity: 0 } }
@keyframes slA4 { 0%,28% { opacity: 0 } 33% { opacity: 1 } 44% { opacity: 1 } 48%,100% { opacity: 0 } }
@keyframes slB2 { 0%,60% { opacity: 0 } 65% { opacity: 1 } 94% { opacity: 1 } 98%,100% { opacity: 0 } }
@keyframes slB3 { 0%,69% { opacity: 0 } 74% { opacity: 1 } 94% { opacity: 1 } 98%,100% { opacity: 0 } }
@keyframes slB5 { 0%,86% { opacity: 0 } 91% { opacity: 1 } 94% { opacity: 1 } 98%,100% { opacity: 0 } }
@media (prefers-reduced-motion: reduce) {
  .slice-fig .pa, .slice-fig .pb2 { display: none; }
  .slice-fig .act { animation: none; }
  .slice-fig .aA1, .slice-fig .aA2, .slice-fig .aA4 { opacity: 1; }
  .slice-fig .aB2, .slice-fig .aB3, .slice-fig .aB5 { opacity: 0; }
  .slice-fig .colA, .slice-fig .lblA { animation: none; opacity: 1; }
  .slice-fig .colB, .slice-fig .lblB { animation: none; opacity: 0; }
}

/* Team */
#team { margin: 44px 0 48px; }
#team h2 { font-size: clamp(1.5rem, 3vw, 1.7rem); font-weight: 650; letter-spacing: -0.02em; margin: 0 0 26px; }
.founder {
  display: flex; flex-direction: row; align-items: flex-start; gap: 26px;
  background: linear-gradient(158deg, #ffffff 0%, #fbf9f5 100%);
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 30px;
}
.favatar { width: 84px; height: 84px; border-radius: 50%; object-fit: cover; flex: 0 0 84px; border: 1px solid var(--line); }
.fmeta { min-width: 0; }
.fmeta h3 { font-size: 1.35rem; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
.fmeta .role { font-size: 12px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent-ink); margin-top: 6px; }
.fmeta p { font-size: 1rem; color: var(--ink-soft); max-width: 586px; line-height: 1.62; margin: 14px 0 0; }
@media (max-width: 640px) { .founder { flex-direction: column; align-items: flex-start; gap: 18px; padding: 24px; } }

/* Footer */
footer { padding: 62px 0 72px; border-bottom: none; }
footer .cols { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; }
footer .fnote { color: var(--ink-faint); font-size: 0.9rem; max-width: 44ch; }
footer .brand { margin-bottom: 14px; }
.callout-strip {
  margin: 0 0 42px; padding: 34px 36px; border-radius: var(--radius);
  background: linear-gradient(158deg, #ffffff 0%, #f6f3ee 100%);
  border: 1px solid var(--line); box-shadow: var(--shadow-lg);
}
.callout-strip p { margin: 0; color: var(--ink-soft); }
.callout-strip .big { font-family: var(--sans); font-weight: 600; font-size: 1.5rem; color: var(--ink); margin-bottom: 6px; letter-spacing: -0.03em; }

.muted { color: var(--ink-faint); }