/* Harness Decision Records documentation site. */

:root {
  --bg: #fbfaf7;
  --bg-band: #f3f1ec;
  --surface: #ffffff;
  --ink: #16181d;
  --ink-soft: #3d424d;
  --muted: #6b7079;
  --line: #e5e2db;
  --line-strong: #d6d2c8;
  --accent: #0f6e56;
  --accent-ink: #0b5845;
  --accent-soft: #e2f1eb;
  --danger: #c2372b;
  --danger-soft: #fbe9e6;
  --warn: #8a5a00;
  --warn-soft: #fbf1db;
  --code-bg: #f4f2ed;
  --term-bg: #12141a;
  --term-ink: #d8dce6;
  --term-muted: #7d8494;
  --shadow: 0 1px 2px rgba(20, 22, 28, 0.04), 0 8px 24px rgba(20, 22, 28, 0.06);
  --radius: 12px;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --bg-band: #14171c;
    --surface: #181b21;
    --ink: #eceef2;
    --ink-soft: #c3c7d0;
    --muted: #8d93a0;
    --line: #262a32;
    --line-strong: #333844;
    --accent: #3fbf96;
    --accent-ink: #6fd6b2;
    --accent-soft: #12302a;
    --danger: #ff7a6b;
    --danger-soft: #3a1a17;
    --warn: #f0c060;
    --warn-soft: #33290f;
    --code-bg: #1d2027;
    --term-bg: #0b0d11;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-ink); text-underline-offset: 3px; }

code, pre { font-family: var(--mono); }

/* Top bar */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
}

.topbar-inner, .footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.topnav { display: flex; align-items: center; gap: 22px; }
.topnav a:not(.button) { color: var(--ink-soft); text-decoration: none; font-size: 15px; font-weight: 500; }
.topnav a:not(.button):hover { color: var(--ink); }

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 18px;
  border-radius: 10px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.12s ease, background 0.12s ease;
}

.button:hover { background: var(--accent-ink); transform: translateY(-1px); }
.button.small { padding: 7px 13px; font-size: 14px; }
.button.ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.button.ghost:hover { background: var(--surface); }

@media (prefers-color-scheme: dark) {
  .button { color: #08241c; }
  .button:hover { color: #08241c; }
}

/* Landing page */

.home section { padding: 0 24px; }

.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 72px 24px 88px !important;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
}

.pill {
  display: inline-block;
  margin: 0 0 20px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-size: 13px;
  font-weight: 600;
}

.hero h1 {
  margin: 0;
  font-size: clamp(38px, 5.2vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 800;
}

.hero-lede { margin: 22px 0 30px; font-size: 19px; color: var(--ink-soft); max-width: 34em; }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.cta-row.center { justify-content: center; }

.install {
  margin-top: 26px;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  padding: 10px 10px 10px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  font-size: 14px;
}

.install code { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; }
.install .prompt { color: var(--muted); font-family: var(--mono); }

button.copy {
  font: 500 12px var(--sans);
  padding: 5px 10px;
  border-radius: 7px;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  color: var(--ink-soft);
  cursor: pointer;
}

button.copy:hover { color: var(--ink); }
button.copy.floating { position: absolute; top: 8px; right: 8px; opacity: 0; transition: opacity 0.15s; }
pre:hover button.copy.floating, button.copy.floating:focus { opacity: 1; }

/* Terminal */

.terminal {
  margin: 0;
  border-radius: 14px;
  background: var(--term-bg);
  color: var(--term-ink);
  box-shadow: 0 30px 60px -20px rgba(10, 12, 20, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.06);
  overflow: hidden;
  font: 13.5px/1.6 var(--mono);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.terminal-bar span { width: 11px; height: 11px; border-radius: 50%; background: #3a3f4b; }
.terminal-bar p { margin: 0 0 0 10px; color: var(--term-muted); font-size: 12px; }

.terminal-body { padding: 18px 20px 20px; }
.terminal-body p { margin: 0 0 10px; }
.t-user { color: #ffffff; font-weight: 500; }
.t-tool { color: #9db4ff; }
.t-path { color: var(--term-ink); }
.t-block {
  margin: 4px 0 14px;
  padding: 12px 14px;
  border-left: 3px solid #ff7a6b;
  border-radius: 6px;
  background: rgba(255, 122, 107, 0.09);
}
.t-block p { margin: 0; }
.t-blocked { color: #ff7a6b; font-weight: 600; margin-bottom: 6px !important; }
.t-fail { color: #12141a; background: #ff7a6b; padding: 0 5px; border-radius: 3px; font-weight: 600; }
.t-indent { padding-left: 2.6em; color: #c3c8d4; }
.t-agent { color: var(--term-muted); margin-bottom: 0 !important; }

.terminal figcaption {
  padding: 10px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  color: var(--term-muted);
  font: 12px var(--sans);
}

/* Bands and cards */

.band { padding: 80px 24px !important; border-top: 1px solid var(--line); }
.band:nth-of-type(odd) { background: var(--bg-band); }

.section-head { max-width: 720px; margin: 0 auto 40px; text-align: center; }
.section-head h2 { margin: 6px 0 10px; font-size: clamp(28px, 3.4vw, 38px); line-height: 1.15; letter-spacing: -0.025em; }
.section-head p:not(.eyebrow) { color: var(--ink-soft); margin: 0; font-size: 17px; }

.eyebrow {
  margin: 0;
  color: var(--accent-ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cards { max-width: 1120px; margin: 0 auto; display: grid; gap: 18px; }
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  color: var(--ink);
}

.card h3 { margin: 0 0 8px; font-size: 18px; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--ink-soft); font-size: 15px; }
.card.flat { box-shadow: none; }
.card code { font-size: 13px; background: var(--code-bg); padding: 1px 5px; border-radius: 5px; }

.icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 700;
  font-size: 18px;
}

.card.harness { text-decoration: none; transition: transform 0.12s ease, border-color 0.12s ease; }
.card.harness:hover { transform: translateY(-2px); border-color: var(--line-strong); }

.status {
  display: inline-block;
  margin: 0 0 14px !important;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px !important;
  font-weight: 600;
}

.status.ok { background: var(--accent-soft); color: var(--accent-ink) !important; }
.status.pending { background: var(--warn-soft); color: var(--warn) !important; }

/* Steps */

.steps { list-style: none; margin: 0 auto; padding: 0; max-width: 880px; display: grid; gap: 22px; }

.step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 20px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.step h3 { margin: 4px 0 6px; font-size: 20px; }
.step p { margin: 0 0 12px; color: var(--ink-soft); }

.step-num {
  margin: 0 !important;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent);
  color: #ffffff !important;
  font-weight: 700;
}

.outcomes { margin: 0; padding-left: 18px; color: var(--ink-soft); }

.final-cta { padding: 88px 24px !important; text-align: center; border-top: 1px solid var(--line); }
.final-cta h2 { margin: 0 0 10px; font-size: clamp(28px, 3.6vw, 40px); letter-spacing: -0.025em; }
.final-cta p { margin: 0 0 28px; color: var(--ink-soft); font-size: 18px; }

/* Documentation layout */

.docs {
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) 200px;
  gap: 48px;
}

.sidebar, .toc { position: sticky; top: 88px; align-self: start; max-height: calc(100vh - 110px); overflow-y: auto; }

.sidebar { display: flex; flex-direction: column; gap: 2px; }

.sidebar-group {
  margin: 18px 0 6px;
  padding-left: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.sidebar-group:first-child { margin-top: 0; }

.sidebar a {
  padding: 6px 10px;
  border-radius: 8px;
  color: var(--ink-soft);
  font-size: 15px;
  text-decoration: none;
}

.sidebar a:hover { background: var(--surface); color: var(--ink); }
.sidebar a.active { background: var(--accent-soft); color: var(--accent-ink); font-weight: 600; }

.doc { min-width: 0; max-width: 740px; }
.doc h1 { margin: 6px 0 10px; font-size: clamp(32px, 4vw, 42px); line-height: 1.1; letter-spacing: -0.03em; }
.lede { margin: 0 0 32px; color: var(--ink-soft); font-size: 19px; }

.toc-title { margin: 0 0 8px; color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; }
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc ul ul { padding-left: 12px; }
.toc li { margin: 0; }
.toc a { display: block; padding: 4px 0; color: var(--muted); font-size: 14px; text-decoration: none; line-height: 1.4; }
.toc a:hover { color: var(--ink); }
.toc a.current { color: var(--accent-ink); font-weight: 600; }
.toc li.sub a { padding-left: 12px; font-size: 13px; }
.toc.empty { visibility: hidden; }

/* Prose */

.prose { color: var(--ink-soft); }
.prose h2 { margin: 48px 0 12px; color: var(--ink); font-size: 24px; letter-spacing: -0.02em; scroll-margin-top: 90px; }
.prose h3 { margin: 32px 0 8px; color: var(--ink); font-size: 18px; }
.prose strong { color: var(--ink); }
.prose li { margin: 6px 0; }
.prose ul, .prose ol { padding-left: 22px; }

.prose code, .doc .lede code {
  font-size: 0.86em;
  background: var(--code-bg);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 6px;
  color: var(--ink);
}

.prose pre, .step pre {
  position: relative;
  margin: 18px 0;
  padding: 16px 18px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--code-bg);
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.6;
}

.step pre { margin: 0; }
.prose pre code, .step pre code { background: none; border: 0; padding: 0; font-size: inherit; color: var(--ink); }

.prose table {
  width: 100%;
  margin: 20px 0;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  font-size: 15px;
}

.prose th, .prose td { padding: 10px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.prose tr:last-child td { border-bottom: 0; }
.prose th { background: var(--bg-band); color: var(--ink); font-size: 13px; font-weight: 600; white-space: nowrap; }
.prose td code { white-space: nowrap; }

.block {
  margin: 24px 0;
  padding: 14px 18px;
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-left-width: 4px;
  border-radius: 10px;
  background: var(--accent-soft);
}

.block h2 { margin: 0 0 4px !important; font-size: 13px !important; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent-ink); }
.block p { margin: 4px 0; color: var(--ink); }
.block.warning { border-color: color-mix(in srgb, var(--warn) 35%, transparent); background: var(--warn-soft); }
.block.warning h2 { color: var(--warn); }

/* Syntax highlighting (Zine tree-sitter classes) */

pre .string { color: #1d7a52; }
pre .number, pre .constant, pre .boolean { color: #b4530f; }
pre .property, pre .label { color: #2b5fb8; }
pre .keyword, pre .function_builtin { color: #8a3fb8; }
pre .comment { color: var(--muted); font-style: italic; }

@media (prefers-color-scheme: dark) {
  pre .string { color: #7fd8a8; }
  pre .number, pre .constant, pre .boolean { color: #f0a868; }
  pre .property, pre .label { color: #8db3ff; }
  pre .keyword, pre .function_builtin { color: #d19bff; }
}

/* Pager and footer */

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 56px; }

.pager-link {
  display: flex;
  flex-direction: column;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  text-decoration: none;
}

.pager-link span { color: var(--muted); font-size: 13px; }
.pager-link strong { color: var(--ink); }
.pager-link:hover { border-color: var(--accent); }
.pager-link.next { grid-column: 2; text-align: right; }

.footer { border-top: 1px solid var(--line); background: var(--bg-band); }
.footer-inner { padding: 28px 24px; flex-wrap: wrap; }
.footer p { margin: 0; color: var(--muted); font-size: 14px; }
.muted-brand { color: var(--ink-soft); font-weight: 600; }

/* Responsive */

@media (max-width: 1100px) {
  .docs { grid-template-columns: 200px minmax(0, 1fr); }
  .toc { display: none; }
  .cards.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .hero { grid-template-columns: minmax(0, 1fr); padding-top: 48px !important; gap: 40px; }
  .cards.three { grid-template-columns: minmax(0, 1fr); }
  .docs { grid-template-columns: minmax(0, 1fr); gap: 24px; padding-top: 24px; }
  .sidebar { position: static; max-height: none; flex-direction: row; flex-wrap: wrap; gap: 4px; }
  .sidebar-group { display: none; }
  .sidebar a { border: 1px solid var(--line); }
  .prose table { display: block; overflow-x: auto; }
  .topnav a:not(.button) { display: none; }
  .terminal-body p { overflow-wrap: anywhere; }
}

@media (max-width: 560px) {
  .cards.four { grid-template-columns: minmax(0, 1fr); }
  .step { grid-template-columns: minmax(0, 1fr); padding: 20px; }
  .band, .final-cta { padding: 56px 16px !important; }
  .hero { padding: 36px 16px 56px !important; }
  .topbar-inner, .footer-inner, .docs { padding-left: 16px; padding-right: 16px; }
  .pager { grid-template-columns: minmax(0, 1fr); }
  .pager-link.next { grid-column: 1; }
}