/* Onchain Bridges, marketing site, design system
   Fusion direction: Venice editorial-institutional base + Nous engineering-lab signals.
   No external CSS deps. Fonts via Google Fonts (Fraunces serif / Inter sans / JetBrains Mono). */

:root {
  /* palette: cool navy base, cream ink, blue accent, sparing warm CTA */
  --bg:        #0A1722;
  --bg-2:      #0E2030;
  --bg-3:      #13283b;
  --ink:       #F4F1E8;   /* cream off-white, not pure white */
  --ink-dim:   #9DB1C0;
  --ink-faint: #6A8194;
  --line:      rgba(244,241,232,0.10);
  --line-2:    rgba(244,241,232,0.18);
  --blue:      #43A6E6;
  --blue-deep: #1E6FB0;
  --amber:     #E0A24B;   /* warm CTA accent, used sparingly */
  --green:     #4FD1A0;
  --red:       #E06B6B;

  --serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --sans:  'Inter', system-ui, -apple-system, sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --maxw: 1140px;
  --pad: clamp(20px, 5vw, 56px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
.container { max-width: var(--maxw); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }

/* ---------- type ---------- */
h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.08; letter-spacing: -0.01em; }
h1 { font-size: clamp(38px, 6vw, 68px); }
h2 { font-size: clamp(28px, 4vw, 44px); }
h3 { font-size: clamp(20px, 2.4vw, 26px); }
.serif-em { font-family: var(--serif); font-style: italic; }
p { color: var(--ink-dim); }
.lead { font-size: clamp(18px, 2.2vw, 22px); color: var(--ink-dim); max-width: 60ch; }

/* mono eyebrow / section labels (the Nous engineering-lab signal) */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
}
.section-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: block;
  margin-bottom: 18px;
}

/* ---------- nav ---------- */
header.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,23,34,0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-family: var(--mono); font-weight: 700; letter-spacing: 0.04em; font-size: 15px; display: flex; align-items: center; gap: 10px; }
.brand .mark { width: 18px; height: 18px; border: 2px solid var(--blue); border-radius: 50%; position: relative; }
.brand .mark::after { content:""; position:absolute; inset: 3px; background: var(--blue); border-radius: 50%; opacity: .55; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { font-size: 14px; color: var(--ink-dim); transition: color .2s; }
.nav-links a:hover { color: var(--ink); }
.btn {
  font-family: var(--sans); font-size: 14px; font-weight: 600;
  padding: 10px 18px; border-radius: 8px; cursor: pointer; border: 1px solid transparent;
  display: inline-flex; align-items: center; gap: 8px; transition: transform .15s, background .2s, border-color .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--blue); color: #05121d; }
.btn-primary:hover { background: #5cb6ef; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--blue); }
.btn-amber { background: var(--amber); color: #2a1c06; }
.btn-amber:hover { background: #ecb463; }
@media (max-width: 820px){ .nav-links a:not(.btn){ display:none; } }

/* ---------- hero ---------- */
.hero { padding: clamp(56px, 9vw, 120px) 0 clamp(40px, 6vw, 72px); position: relative; }
.hero-grid { position:absolute; inset:0; background:
  radial-gradient(900px 420px at 72% -8%, rgba(67,166,230,0.16), transparent 60%),
  radial-gradient(700px 360px at 8% 18%, rgba(30,111,176,0.10), transparent 60%);
  pointer-events:none; }
.status-chip {
  display:inline-flex; align-items:center; gap:8px; font-family: var(--mono); font-size: 12px;
  letter-spacing: .08em; color: var(--green); border:1px solid rgba(79,209,160,0.35);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 26px; background: rgba(79,209,160,0.06);
}
.status-chip .dot { width:7px; height:7px; border-radius:50%; background: var(--green); box-shadow:0 0 0 0 rgba(79,209,160,.6); animation: pulse 2.2s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(79,209,160,.5)} 70%{box-shadow:0 0 0 8px rgba(79,209,160,0)} 100%{box-shadow:0 0 0 0 rgba(79,209,160,0)} }
.hero h1 { max-width: 16ch; margin: 14px 0 22px; }
.hero h1 em { color: var(--blue); font-style: italic; }
.hero-cta { display:flex; gap:14px; margin-top: 32px; flex-wrap: wrap; }
.hero-sub { max-width: 56ch; }

/* ---------- generic section ---------- */
section.block { padding: clamp(56px, 8vw, 104px) 0; border-top: 1px solid var(--line); position: relative; }
.block h2 { max-width: 20ch; margin-bottom: 18px; }
.block .lead { margin-bottom: 8px; }

/* cards */
.cards { display:grid; gap: 18px; margin-top: 40px; }
.cards.c3 { grid-template-columns: repeat(3, 1fr); }
.cards.c4 { grid-template-columns: repeat(4, 1fr); }
.cards.c2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px){ .cards.c3, .cards.c4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px){ .cards.c3, .cards.c4, .cards.c2 { grid-template-columns: 1fr; } }
.card {
  background: linear-gradient(180deg, var(--bg-2), rgba(14,32,48,0.4));
  border: 1px solid var(--line); border-radius: 14px; padding: 26px 24px;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.card .num { font-family: var(--mono); font-size: 12px; color: var(--blue); letter-spacing:.1em; }
.card h3 { margin: 14px 0 10px; font-family: var(--sans); font-weight: 650; font-size: 19px; letter-spacing: -0.01em; }
.card p { font-size: 15px; }

/* steps */
.steps { display:grid; grid-template-columns: repeat(3,1fr); gap: 22px; margin-top: 40px; }
@media (max-width: 760px){ .steps { grid-template-columns: 1fr; } }
.step { border-left: 2px solid var(--blue-deep); padding-left: 20px; }
.step .k { font-family: var(--mono); font-size: 12px; color: var(--blue); }
.step h3 { font-family: var(--sans); font-weight: 650; font-size: 18px; margin: 8px 0; }
.step p { font-size: 15px; }

/* table */
.tablewrap { margin-top: 34px; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
table { width:100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); }
th { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); background: var(--bg-2); }
td { color: var(--ink-dim); }
tr:last-child td { border-bottom: none; }
.badge { font-family: var(--mono); font-size: 11px; padding: 3px 9px; border-radius: 6px; letter-spacing: .04em; }
.badge.ok { color: var(--green); background: rgba(79,209,160,0.10); }
.badge.road { color: var(--amber); background: rgba(224,162,75,0.10); }

/* coverage */
.vm-grid { display:grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-top: 38px; }
@media (max-width: 820px){ .vm-grid { grid-template-columns: 1fr 1fr; } }
.vm { background: var(--bg-2); border:1px solid var(--line); border-radius: 12px; padding: 22px; }
.vm .fam { font-family: var(--mono); font-size: 12px; color: var(--blue); letter-spacing:.1em; text-transform: uppercase; }
.vm h3 { font-family: var(--sans); font-weight: 650; font-size: 17px; margin: 8px 0 12px; }
.vm ul { list-style: none; }
.vm li { font-size: 14px; color: var(--ink-dim); padding: 4px 0; display:flex; align-items:center; gap:8px; }
.vm li .s { font-family: var(--mono); font-size: 10px; padding: 2px 6px; border-radius: 4px; }
.s.live { color: var(--green); background: rgba(79,209,160,.1);}
.s.relay { color: var(--blue); background: rgba(67,166,230,.1);}
.s.plan { color: var(--amber); background: rgba(224,162,75,.1);}

/* chainlink strip */
.cl-strip { display:grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-top: 34px; }
@media (max-width: 820px){ .cl-strip { grid-template-columns: 1fr 1fr; } }
.cl { border:1px solid var(--line); border-radius: 12px; padding: 20px; background: var(--bg-2); }
.cl b { font-family: var(--mono); color: var(--blue); font-size: 15px; letter-spacing:.04em; }
.cl p { font-size: 14px; margin-top: 8px; }

/* backers */
.backers { display:flex; flex-wrap:wrap; gap: 14px; margin-top: 30px; }
.backer { border:1px solid var(--line); border-radius: 10px; padding: 16px 22px; background: var(--bg-2); font-family: var(--mono); font-size: 14px; letter-spacing: .02em; color: var(--ink); }

/* ---------- the live demo widget ---------- */
.demo { background: linear-gradient(180deg, #0c1d2c, #0a1722); border: 1px solid var(--line-2); border-radius: 18px; padding: clamp(22px, 3vw, 36px); margin-top: 44px; }
.demo-head { display:flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.demo-head .sim { font-family: var(--mono); font-size: 11px; color: var(--amber); border:1px solid rgba(224,162,75,.3); padding: 4px 10px; border-radius: 999px; }
.demo h3 { font-family: var(--sans); font-weight: 650; font-size: 21px; }
.sandbox-note { margin-top: 14px; font-size: 13px; line-height: 1.6; color: var(--ink-faint); border:1px solid rgba(224,162,75,.22); background: rgba(224,162,75,.05); border-radius: 10px; padding: 12px 14px; }
.sandbox-note b { color: var(--ink-dim); }
.demo .addr-row { display:flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.demo input {
  flex: 1; min-width: 240px; background: #081521; border:1px solid var(--line-2); color: var(--ink);
  font-family: var(--mono); font-size: 14px; padding: 13px 16px; border-radius: 10px;
}
.demo input:focus { outline: none; border-color: var(--blue); }
.demo .or { color: var(--ink-faint); font-size: 13px; margin-top: 12px; }
.demo .or a { color: var(--blue); border-bottom: 1px dashed var(--blue-deep); }
.demo-actions { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.demo-action { font-size: 14px; }
.btn-outline-amber { background: transparent; color: var(--amber); border-color: rgba(224,162,75,0.5); }
.btn-outline-amber:hover { background: rgba(224,162,75,0.10); border-color: var(--amber); }
.demo-hint { margin-top: 12px; font-size: 13px; color: var(--ink-faint); max-width: 66ch; line-height: 1.6; }

.console { margin-top: 24px; font-family: var(--mono); font-size: 13.5px; display:none; }
.console.show { display:block; }
.line { display:flex; align-items:center; gap:10px; padding: 7px 0; color: var(--ink-dim); opacity:0; transform: translateY(4px); animation: rise .35s forwards; }
@keyframes rise { to { opacity:1; transform:none; } }
.line .tick { color: var(--green); }
.line .spin { color: var(--blue); }
.line a { color: var(--blue); }
.line .muted { color: var(--ink-faint); }

.goal-row { margin-top: 22px; display:none; gap:10px; flex-wrap:wrap; align-items:center; }
.goal-row.show { display:flex; }
.goal-row .lbl { font-family: var(--mono); font-size:12px; color: var(--ink-faint); letter-spacing:.1em; text-transform:uppercase; }
.chip { font-family: var(--sans); font-size: 13px; font-weight:600; padding: 8px 14px; border-radius: 8px; border:1px solid var(--line-2); background: transparent; color: var(--ink); cursor:pointer; }
.chip:hover, .chip.active { border-color: var(--blue); background: rgba(67,166,230,.08); }

.reco { margin-top: 22px; display:none; }
.reco.show { display:block; }
.reco-card { background: #081521; border:1px solid rgba(67,166,230,.35); border-radius: 14px; padding: 22px; }
.reco-card .agent { font-family: var(--mono); font-size:12px; color: var(--blue); letter-spacing:.1em; text-transform:uppercase; }
.reco-card .win { font-family: var(--serif); font-size: 26px; margin: 8px 0; }
.reco-card .win b { color: var(--blue); }
.reco-card .why { font-size: 14px; color: var(--ink-dim); }
.reco-card table { margin-top: 16px; }
.reco-card td.best { color: var(--green); }
.exec-btn { margin-top: 18px; }

/* ---------- footer ---------- */
footer.site { border-top: 1px solid var(--line); padding: 64px 0 28px; margin-top: 0; }
.foot-grid { display:grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 28px; }
@media (max-width: 820px){ .foot-grid { grid-template-columns: 1fr 1fr; } }
.foot-grid h4 { font-family: var(--mono); font-size: 11px; letter-spacing:.14em; text-transform:uppercase; color: var(--ink-faint); margin-bottom: 14px; }
.foot-grid a { display:block; color: var(--ink-dim); font-size: 14px; padding: 4px 0; }
.foot-grid a:hover { color: var(--ink); }
.foot-brand { font-family: var(--serif); font-size: 22px; margin-bottom: 12px; }
.disclaimer { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 12px; color: var(--ink-faint); line-height: 1.7; }
.disclaimer b { color: var(--amber); }

/* running footer slogan (Nous signal) */
.running { position: fixed; right: 14px; bottom: 12px; font-family: var(--mono); font-size: 10px; letter-spacing:.16em; color: var(--ink-faint); opacity:.5; pointer-events:none; z-index: 5; text-transform: uppercase; }
@media (max-width: 820px){ .running { display:none; } }

/* scroll reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* CTA band */
.cta-band { text-align:center; padding: clamp(64px,9vw,120px) 0; border-top:1px solid var(--line); background: radial-gradient(700px 320px at 50% 0%, rgba(67,166,230,0.12), transparent 60%); }
.cta-band h2 { max-width: 22ch; margin: 0 auto 26px; }
.cta-band .hero-cta { justify-content:center; }

/* ---------- sub-page hero ---------- */
.page-hero { padding: clamp(52px,7vw,96px) 0 clamp(28px,4vw,48px); position: relative; border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 18ch; margin: 14px 0 20px; }
.page-hero h1 em { color: var(--blue); font-style: italic; }
.breadcrumb { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); letter-spacing: .1em; }
.breadcrumb a { color: var(--ink-faint); }
.breadcrumb a:hover { color: var(--blue); }

/* ---------- prose (about, blog post) ---------- */
.prose { max-width: 68ch; }
.prose p { margin-bottom: 18px; font-size: 17px; }
.prose h2 { margin: 40px 0 14px; }
.prose h3 { margin: 30px 0 10px; font-family: var(--sans); font-weight: 650; }
.prose .callout { border-left: 3px solid var(--blue); padding: 14px 0 14px 22px; margin: 26px 0; }
.prose .callout p { color: var(--ink); font-family: var(--serif); font-size: 21px; font-style: italic; margin: 0; }

/* ---------- team ---------- */
.member .role { font-family: var(--mono); font-size: 12px; color: var(--blue); letter-spacing: .06em; margin: 6px 0 12px; }
.member h3 { font-family: var(--serif); font-weight: 400; font-size: 23px; }
.member p { font-size: 15px; }
.avatar { width: 54px; height: 54px; border-radius: 50%; background: linear-gradient(135deg, var(--blue-deep), var(--bg-3)); display:flex; align-items:center; justify-content:center; font-family: var(--serif); font-size: 22px; color: var(--ink); margin-bottom: 16px; border: 1px solid var(--line-2); }

/* ---------- blog ---------- */
.post-list { margin-top: 36px; border-top: 1px solid var(--line); }
.post-item { display:block; padding: 26px 0; border-bottom: 1px solid var(--line); transition: padding-left .2s; }
.post-item:hover { padding-left: 8px; }
.post-item .meta { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); letter-spacing: .06em; }
.post-item h3 { font-family: var(--serif); font-weight: 400; font-size: clamp(22px,2.6vw,28px); margin: 8px 0; }
.post-item p { font-size: 15px; max-width: 70ch; }
.post-item .more { color: var(--blue); font-size: 14px; font-family: var(--mono); }

/* ---------- contact form ---------- */
.form { max-width: 560px; margin-top: 34px; display:grid; gap: 16px; }
.form label { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-faint); display:block; margin-bottom: 7px; }
.form input, .form select, .form textarea {
  width: 100%; background: #081521; border:1px solid var(--line-2); color: var(--ink);
  font-family: var(--sans); font-size: 15px; padding: 12px 14px; border-radius: 10px;
}
.form input:focus, .form select:focus, .form textarea:focus { outline:none; border-color: var(--blue); }
.form textarea { min-height: 130px; resize: vertical; }
.form .note { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); }