/* fusion-runtime site — shared styles */

:root {
  /* brand: warm cream / ink, blue→orange fusing-waveform mark */
  --bg: #f6f3ec;
  --bg-elevated: #ffffff;
  --bg-code: #1c1712;
  --border: #e4ddce;
  --border-soft: #ece6d9;
  --text: #1c1712;
  --text-dim: #6b6153;
  --text-faint: #a79c8c;
  --accent: #d9612f;
  --accent-dim: #b84f24;
  --accent-bg: rgba(217, 97, 47, 0.1);
  --accent-border: rgba(217, 97, 47, 0.28);
  --blue: #3e5c8a;
  --danger: #b3421e;
  --nav-bg: rgba(246, 243, 236, 0.82);

  /* constants for surfaces that stay dark ink in both themes (terminal, code blocks) */
  --code-text: #f1ece0;
  --code-text-dim: #9c9284;
  --code-border: rgba(255, 255, 255, 0.1);
  --code-border-strong: rgba(255, 255, 255, 0.18);

  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --heading-font: "Space Grotesk", var(--sans);
  --max-w: 1080px;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17140f;
    --bg-elevated: #201c15;
    --bg-code: #0f0d0a;
    --border: #332d22;
    --border-soft: #262117;
    --text: #f5f1e8;
    --text-dim: #b5a996;
    --text-faint: #7a7061;
    --accent: #e37a42;
    --accent-dim: #d9612f;
    --accent-bg: rgba(227, 122, 66, 0.16);
    --accent-border: rgba(227, 122, 66, 0.34);
    --blue: #7592bc;
    --nav-bg: rgba(23, 20, 15, 0.82);
  }
}

* { box-sizing: border-box; }

h1, h2, h3, .brand-word { font-family: var(--heading-font); }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; }

img, svg { display: block; max-width: 100%; }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}

.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand-mark { width: 44px; height: auto; }

.brand-word {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.brand-word .w-bold { color: var(--text); font-weight: 700; }
.brand-word .w-thin { color: var(--text-dim); font-weight: 400; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
  transition: color 0.15s;
}

.nav-links a:hover { color: var(--text); }

.nav-links a.active { color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 7px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
}

.btn-primary:hover { background: var(--accent-dim); }

.btn-ghost {
  border-color: var(--border);
  color: var(--text);
  background: transparent;
}

.btn-ghost:hover { border-color: var(--text-dim); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
}

/* ---------- hero ---------- */

.notice-banner {
  background: var(--accent-bg);
  border-bottom: 1px solid var(--border-soft);
  font-size: 13px;
  color: var(--text-dim);
  text-align: center;
  padding: 8px 16px;
}

.notice-banner strong { color: var(--accent); font-weight: 600; }

.hero {
  padding: 72px 0 64px;
  text-align: center;
}

.hero-mark {
  width: 130px;
  height: auto;
  margin: 0 auto 28px;
}

.eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.hero h1 {
  font-family: var(--heading-font);
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  font-weight: 600;
}

.hero h1 .accent { color: var(--accent); }

.hero p.sub {
  max-width: 620px;
  margin: 0 auto 36px;
  color: var(--text-dim);
  font-size: 1.15rem;
  line-height: 1.55;
}

.hero-ctas {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-ctas .btn { padding: 11px 20px; font-size: 15px; }

/* terminal block */

.terminal {
  max-width: 620px;
  margin: 0 auto;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: left;
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.6);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--code-border);
}

.terminal-bar span {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--code-border-strong);
}

.terminal-body {
  padding: 18px 20px 20px;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.9;
}

.terminal-body .comment { color: var(--code-text-dim); }
.terminal-body .prompt { color: var(--accent); }
.terminal-body .cmd { color: var(--code-text); }

/* ---------- sections ---------- */

section { padding: 72px 0; }

.section-head {
  max-width: 640px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-head .kicker {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -0.015em;
  margin: 0 0 12px;
}

.section-head p {
  color: var(--text-dim);
  font-size: 1.02rem;
  margin: 0;
}

hr.rule {
  border: none;
  border-top: 1px solid var(--border-soft);
  margin: 0;
}

/* value prop cards */

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
}

.card .icon {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-bg);
  border-radius: 8px;
  color: var(--accent);
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.05rem;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.card p {
  color: var(--text-dim);
  font-size: 0.94rem;
  margin: 0;
  line-height: 1.6;
}

/* architecture diagram */

.pipeline {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  row-gap: 16px;
  column-gap: 0;
  font-family: var(--mono);
  font-size: 13px;
}

.pipeline .stage {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  text-align: center;
  color: var(--text);
}

.pipeline .stage small {
  display: block;
  color: var(--text-faint);
  font-size: 11px;
  margin-top: 3px;
}

.pipeline .arrow {
  color: var(--text-faint);
  padding: 0 10px;
}

.pipeline-note {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.92rem;
  max-width: 560px;
  margin: 24px auto 0;
}

/* honest trade */

.trade-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.trade-col {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
}

.trade-col h3 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  margin: 0 0 16px;
}

.trade-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.trade-col li {
  padding: 8px 0;
  border-top: 1px solid var(--border-soft);
  font-size: 0.94rem;
  color: var(--text-dim);
}

.trade-col li:first-child { border-top: none; padding-top: 0; }
.trade-col li strong { color: var(--text); font-weight: 500; }

/* measured numbers table */

.measured-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.measured-table th, .measured-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-soft);
}

.measured-table th {
  color: var(--text-faint);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.measured-table td { color: var(--text-dim); }
.measured-table td:first-child { color: var(--text); font-family: var(--mono); font-size: 0.88rem; }

/* email capture */

.capture-box {
  max-width: 560px;
  margin: 0 auto;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 36px 32px;
  text-align: center;
}

.capture-box h3 {
  margin: 0 0 8px;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.capture-box p {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin: 0 0 22px;
}

.capture-form {
  display: flex;
  gap: 10px;
  max-width: 400px;
  margin: 0 auto;
}

.capture-form input[type="email"] {
  flex: 1;
  background: var(--bg-code);
  border: 1px solid var(--code-border-strong);
  border-radius: 7px;
  padding: 11px 14px;
  color: var(--code-text);
  font-size: 14px;
  font-family: inherit;
}

.capture-form input[type="email"]::placeholder { color: var(--code-text-dim); }
.capture-form input[type="email"]:focus { outline: none; border-color: var(--accent); }

.capture-note {
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-top: 14px;
}

.capture-msg {
  font-size: 0.9rem;
  margin-top: 14px;
  display: none;
}

.capture-msg.show { display: block; }
.capture-msg.ok { color: var(--accent); }
.capture-msg.err { color: var(--danger); }

/* footer */

footer {
  border-top: 1px solid var(--border-soft);
  padding: 40px 0;
}

footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

footer .foot-links {
  display: flex;
  gap: 24px;
  font-size: 13.5px;
}

footer .foot-links a {
  color: var(--text-dim);
  text-decoration: none;
}

footer .foot-links a:hover { color: var(--text); }

footer .foot-meta {
  color: var(--text-faint);
  font-size: 13px;
}

/* ---------- docs layout ---------- */

.docs-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px 100px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
}

.docs-toc {
  position: sticky;
  top: 76px;
  align-self: start;
  font-size: 13.5px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

.docs-toc .toc-group { margin-bottom: 20px; }

.docs-toc .toc-title {
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 11px;
  margin-bottom: 8px;
}

.docs-toc a {
  display: block;
  padding: 5px 0;
  color: var(--text-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 10px;
  margin-left: -11px;
}

.docs-toc a:hover { color: var(--text); }
.docs-toc a.active { color: var(--accent); border-left-color: var(--accent); }

.docs-content {
  min-width: 0;
}

.docs-content h1 {
  font-size: 2rem;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.docs-content > .lede {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin: 0 0 48px;
}

.docs-section { margin-bottom: 56px; scroll-margin-top: 76px; }

.docs-section h2 {
  font-size: 1.4rem;
  letter-spacing: -0.015em;
  margin: 0 0 6px;
  padding-top: 8px;
  border-top: 1px solid var(--border-soft);
}

.docs-section > h2:first-child { border-top: none; padding-top: 0; }

.docs-section h3 {
  font-size: 1.05rem;
  margin: 28px 0 10px;
}

.docs-section p {
  color: var(--text-dim);
  font-size: 0.96rem;
  line-height: 1.7;
}

.docs-section code {
  font-family: var(--mono);
  background: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
  color: var(--accent);
}

pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 18px;
  overflow-x: auto;
  position: relative;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--code-text);
  font-size: 0.86rem;
  line-height: 1.7;
}

.copy-btn {
  position: absolute;
  top: 10px; right: 10px;
  background: var(--code-border);
  border: 1px solid var(--code-border-strong);
  color: var(--code-text-dim);
  font-size: 11px;
  padding: 4px 9px;
  border-radius: 5px;
  cursor: pointer;
  font-family: var(--sans);
  opacity: 0;
  transition: opacity 0.15s;
}

pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { color: var(--code-text); border-color: var(--code-border-strong); }

table.ref {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 16px 0;
}

table.ref th, table.ref td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: top;
}

table.ref th {
  color: var(--text-faint);
  font-weight: 500;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

table.ref td:first-child {
  font-family: var(--mono);
  color: var(--text);
  font-size: 0.85rem;
  overflow-wrap: anywhere;
}

.table-scroll {
  overflow-x: auto;
}

table.ref td { color: var(--text-dim); }

.callout {
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  border-radius: 8px;
  padding: 14px 16px;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin: 16px 0;
}

.callout strong { color: var(--text); }

.diagram-block {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--code-text-dim);
  line-height: 1.6;
  white-space: pre;
}

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .cards { grid-template-columns: 1fr; }
  .trade-grid { grid-template-columns: 1fr; }
  .docs-wrap { grid-template-columns: 1fr; }
  .docs-toc {
    position: static;
    max-height: none;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--border-soft);
    padding-bottom: 20px;
  }
  .pipeline { font-size: 11.5px; }
  .pipeline .stage { padding: 9px 11px; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .hero { padding: 56px 0 44px; }
  section { padding: 52px 0; }
  .capture-form { flex-direction: column; }
  .capture-box { padding: 28px 22px; }
  footer .wrap { flex-direction: column; align-items: flex-start; }
}

.nav.open .nav-links {
  display: flex;
  position: absolute;
  top: 60px; left: 0; right: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border-soft);
  flex-direction: column;
  padding: 16px 24px 20px;
  gap: 16px;
}