/* Agentick presentation site.
   One column, hairline rules, a single accent. Type does the work: DM Sans for everything a person
   reads, IBM Plex Mono for labels and numbers. Dark by choice, with Agentick green as the only colour. */

:root {
  color-scheme: dark;
  --bg: #101010;
  --bg-2: #181818;
  --fg: #f3f5f3;
  --fg-2: #b8bdb9;
  --fg-3: #a0a8a2;
  --line: rgba(243, 245, 243, 0.12);
  --line-strong: rgba(243, 245, 243, 0.28);
  --accent: #1ed760;
  --accent-hover: #3be477;
  --on-accent: #07120b;
  --warn: #E9C46A;
  --ok: #6FD3A0;
  --sans: "DM Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --column: 1120px;
  --gutter-left: max(20px, env(safe-area-inset-left, 0px));
  --gutter-right: max(20px, env(safe-area-inset-right, 0px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--sans); font-size: 18px; line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--bg); }
a { color: inherit; }
img, svg { max-width: 100%; }
button { font: inherit; cursor: pointer; color: inherit; }
button:disabled { opacity: .45; cursor: not-allowed; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
h1, h2, h3, h4 { margin: 0; font-weight: 500; line-height: 1.08; letter-spacing: -0.03em; text-wrap: balance; }
p { margin: 0; }
code { font-family: var(--mono); font-size: .9em; }
.skip { position: fixed; left: 20px; top: -100px; z-index: 40; padding: 12px 16px; background: var(--fg); color: var(--bg); }
.skip:focus { top: 12px; }

/* Scroll progress: a hairline of accent that grows across the top, like a tape counter. */
#progress { position: fixed; top: env(safe-area-inset-top, 0px); left: 0; height: 2px; width: 0; background: var(--accent); z-index: 31; }

/* Header: wordmark, challenge label, menu, one action. */
.bar { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: rgba(16, 16, 16, 0.86); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.bar-inner { max-width: var(--column); margin: 0 auto; padding-block: 16px; padding-left: var(--gutter-left); padding-right: var(--gutter-right); display: flex; align-items: center; gap: 20px; }
.wordmark { font-weight: 300; font-size: 22px; letter-spacing: 0.34em; text-transform: uppercase; text-decoration: none; }
.wordmark::before { content: ""; display: inline-block; width: .55em; height: .55em; margin-right: .55em; background: var(--accent); border-radius: 2px; transform: rotate(45deg); vertical-align: .12em; }
.challenge { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--fg-3); }
.bar-right { margin-left: auto; display: flex; align-items: center; gap: 22px; flex-shrink: 0; }
.menu { position: relative; }
.menu summary { list-style: none; font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; padding: 10px 4px; white-space: nowrap; cursor: pointer; }
.menu summary::-webkit-details-marker { display: none; }
.menu summary::after { content: " +"; }
.menu[open] summary::after { content: " −"; }
.menu-list { position: absolute; right: 0; top: calc(100% + 8px); min-width: 260px; background: var(--bg-2); border: 1px solid var(--line-strong); padding: 8px 0; display: grid; }
.menu-list a { padding: 12px 18px; text-decoration: none; font-size: 15px; display: flex; justify-content: space-between; gap: 16px; }
.menu-list a span { font-family: var(--mono); font-size: 11px; color: var(--fg-3); }
.menu-list a:hover { background: rgba(243, 245, 243, 0.06); }

.btn { display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 52px; padding: 12px 22px; border: 1px solid var(--line-strong); border-radius: 0; background: transparent; color: var(--fg); text-decoration: none; font-size: 16px; font-weight: 500; letter-spacing: -0.01em; transition: background .15s ease, border-color .15s ease; }
.btn:hover { border-color: var(--fg); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn.small { min-height: 40px; padding: 8px 14px; font-size: 14px; gap: 14px; }
.bar .btn { min-height: 44px; padding: 8px 18px; font-size: 15px; gap: 18px; white-space: nowrap; }
.text-link { display: inline-flex; align-items: center; gap: 10px; font-weight: 500; text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 1px; }
.text-link:hover { color: var(--accent); }
.text-button { padding: 10px 0; border: 0; background: transparent; color: var(--fg-2); text-decoration: underline; text-underline-offset: 5px; font-size: 14px; }

/* Column and sections. Rules, not cards, separate things. */
main { max-width: var(--column); margin: 0 auto; padding-block: 0 80px; padding-left: var(--gutter-left); padding-right: var(--gutter-right); }
section { padding-block: 88px; border-top: 1px solid var(--line); display: grid; gap: 32px; min-width: 0; }
section:first-child { border-top: 0; }
.label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--fg-3); }
.label.accent { color: var(--accent); }
h2 { font-size: clamp(34px, 4.6vw, 52px); max-width: 16ch; }
h2 .dim { color: var(--fg-2); }
h3 { font-size: clamp(22px, 2.6vw, 28px); letter-spacing: -0.02em; }
.lede { font-size: clamp(20px, 2.3vw, 26px); line-height: 1.4; color: var(--fg-2); max-width: 30ch; letter-spacing: -0.01em; }
.copy { color: var(--fg-2); max-width: 58ch; font-size: 18px; }
.small { font-size: 14px; color: var(--fg-3); }
.eyebrow { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--fg-3); }
.muted { color: var(--fg-2); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; }

/* Hero: the name as large as it goes, then the product. */
.hero { padding-block: 72px 56px; gap: 28px; }
.hero h1 { font-weight: 300; font-size: clamp(54px, 12.5vw, 168px); letter-spacing: 0.14em; text-transform: uppercase; line-height: .95; margin-left: -0.02em; }
.product { margin-top: 24px; border: 1px solid var(--line-strong); background: #101010; }
.product svg { display: block; width: 100%; height: auto; }
.facts { display: flex; flex-wrap: wrap; gap: 10px 32px; font-family: var(--mono); font-size: 12px; color: var(--fg-2); letter-spacing: 0.04em; }
.facts b { font-weight: 500; color: var(--fg); }

/* Section index. */
.section-nav { display: flex; flex-wrap: wrap; gap: 8px 36px; padding: 18px 0; border-block: 1px solid var(--line); }
.section-nav a { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; text-decoration: none; color: var(--fg-2); padding: 6px 0; }
.section-nav a:hover { color: var(--accent); }

/* Numbered rows with hairlines. The number is information: these are sequences. */
.rows { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.rows > li { border-bottom: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 64px minmax(0, 1fr) 32px; gap: 20px; align-items: start; padding: 26px 0; }
.row .n { font-family: var(--mono); font-size: 12px; color: var(--accent); padding-top: 9px; }
.row h3 { font-size: clamp(22px, 2.6vw, 28px); }
.row p { margin-top: 10px; color: var(--fg-2); max-width: 56ch; }
.rows details { display: contents; }
.rows summary { list-style: none; cursor: pointer; }
.rows summary::-webkit-details-marker { display: none; }
.rows summary .plus { font-size: 26px; font-weight: 300; line-height: 1; color: var(--fg); justify-self: end; padding-top: 4px; }
.rows details[open] summary .plus::before { content: "−"; }
.rows summary .plus::before { content: "+"; }
.rows .more { grid-column: 2; padding: 0 0 26px; color: var(--fg-2); max-width: 56ch; display: grid; gap: 10px; font-size: 16px; }
.rows .more code { color: var(--fg); }

/* The evidence table: numbers in mono, aligned, one hairline per row. */
.ledger { width: 100%; border-collapse: collapse; font-size: 16px; }
.ledger th { text-align: left; font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--fg-3); font-weight: 400; padding: 0 0 14px; border-bottom: 1px solid var(--line-strong); }
.ledger td { padding: 20px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.ledger td + td, .ledger th + th { padding-left: 24px; }
.ledger .num { font-family: var(--mono); font-size: 18px; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.ledger .hash { font-family: var(--mono); font-size: 13px; color: var(--fg-2); }
.ledger .acc { color: var(--accent); }
.ledger .state { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.ledger .state.ok { color: var(--ok); }
.ledger .state.warn { color: var(--warn); }
.ledger-wrap { overflow-x: auto; max-width: 100%; min-width: 0; }
.ledger { min-width: 560px; }

/* Two columns split by a hairline. */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.split > div { display: grid; align-content: start; gap: 18px; min-width: 0; }
.split > div + div { border-left: 1px solid var(--line); padding-left: 40px; }
.split p { color: var(--fg-2); }
pre { margin: 0; padding: 18px 20px; border: 1px solid var(--line); background: var(--bg-2); font-family: var(--mono); font-size: 13px; line-height: 1.7; color: var(--fg-2); overflow-x: auto; }

/* Definition list for plain facts. */
.facts-list { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; border-top: 1px solid var(--line); }
.facts-list > div { padding: 22px 0; border-bottom: 1px solid var(--line); display: grid; gap: 8px; }
.facts-list dt { font-weight: 500; font-size: 19px; letter-spacing: -0.01em; }
.facts-list dd { margin: 0; color: var(--fg-2); font-size: 16px; }

/* Questions: plain rows with a plus. */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 24px; padding: 22px 0; font-size: 20px; font-weight: 500; letter-spacing: -0.01em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-weight: 300; font-size: 26px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 0 22px; color: var(--fg-2); max-width: 60ch; }

/* Numbers for the submission. */
.numbers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 24px; border-top: 1px solid var(--line-strong); }
.num { padding: 18px 0; border-bottom: 1px solid var(--line); display: grid; gap: 4px; }
.num strong { font-family: var(--mono); font-weight: 400; font-size: 30px; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.num span { font-size: 13px; color: var(--fg-3); }
.limits { margin: 0; padding: 0; list-style: none; display: grid; }
.limits li { padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--fg-2); font-size: 16px; }

/* Download block. */
.download { padding-block: 96px; gap: 24px; }
.download h2 { max-width: 20ch; }

footer { border-top: 1px solid var(--line); }
.foot { max-width: var(--column); margin: 0 auto; padding-block: 36px 56px; padding-left: var(--gutter-left); padding-right: var(--gutter-right); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 32px; align-items: baseline; }
.foot .wordmark { font-size: 16px; }
.foot nav { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 14px; color: var(--fg-2); }
.foot nav a { text-decoration: none; }
.foot nav a:hover { color: var(--fg); }
.foot .small { width: 100%; }

/* The walkthrough. presentation.js fills these elements; the surface stays a plain ruled panel. */
.pill { display: inline-block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; padding: 4px 10px; border: 1px solid var(--line-strong); color: var(--fg-2); white-space: nowrap; }
.pill.warn { color: var(--warn); border-color: rgba(233, 196, 106, 0.45); }
.pill.ok { color: var(--ok); border-color: rgba(111, 211, 160, 0.45); }
.demo-shell { border: 1px solid var(--line-strong); background: var(--bg-2); }
.demo-top { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); padding: 14px 22px; font-size: 13px; color: var(--fg-2); }
.demo-layout { display: grid; grid-template-columns: 200px minmax(0, 1fr); }
#demo-steps { padding: 12px 0; border-right: 1px solid var(--line); display: flex; flex-direction: column; }
#demo-steps button { display: flex; gap: 14px; text-align: left; padding: 14px 20px; border: 0; border-left: 2px solid transparent; color: var(--fg-2); background: transparent; font-size: 15px; }
#demo-steps button span { font-family: var(--mono); font-size: 11px; color: var(--fg-3); padding-top: 3px; }
#demo-steps button[aria-current] { color: var(--fg); border-left-color: var(--accent); }
#demo-steps button[aria-current] span { color: var(--accent); }
.demo-detail { padding: clamp(20px, 3vw, 32px); display: grid; align-content: start; gap: 18px; min-height: 560px; min-width: 0; }
.demo-meta, .demo-actions, .review-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.demo-meta { justify-content: space-between; }
.demo-detail h3 { font-size: clamp(24px, 3vw, 32px); }
#demo-artifact { padding: 20px; border: 1px solid var(--line); display: grid; gap: 14px; font-size: 15px; }
#demo-artifact:empty { display: none; }
.artifact-label { color: var(--accent); font: 11px/1.6 var(--mono); text-transform: uppercase; letter-spacing: .12em; }
blockquote { margin: 0; padding-left: 16px; border-left: 2px solid var(--accent); font-size: 18px; }
.sample-roles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.sample-roles span { color: var(--fg-2); }
.sample-roles b { font-size: 13px; color: var(--fg); }
.sample-tools { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--fg-2); font-size: 12px; }
.demo-boundary { padding-left: 14px; border-left: 2px solid var(--line-strong); font-size: 14px; }
.demo-boundary strong { color: var(--fg); font-family: var(--mono); font-weight: 400; font-size: 11px; text-transform: uppercase; letter-spacing: .14em; }
.demo-boundary p { margin-top: 7px; color: var(--fg-2); }
details.plain summary, .presenter-runbook summary { cursor: pointer; color: var(--fg-2); font-size: 14px; }
details.plain p, .presenter-runbook ol, .presenter-runbook p { margin-top: 12px; color: var(--fg-2); font-size: 14px; }
.demo-feedback { color: var(--warn); font-size: 14px; }
.demo-feedback:empty { display: none; }
.demo-actions { margin-top: auto; }
.demo-actions .btn { min-height: 44px; font-size: 14px; gap: 14px; }
.gate-ready { color: var(--ok); }
.presenter-runbook { border-top: 1px solid var(--line); padding-top: 18px; }
.presenter-runbook li { margin-bottom: 10px; }
.request-path { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em; color: var(--fg-2); }
.request-path span { padding: 10px 14px; border: 1px solid var(--line); }
.request-path b { color: var(--accent); font-weight: 400; }
.architecture-switch { display: flex; flex-wrap: wrap; gap: 0; border: 1px solid var(--line-strong); width: fit-content; max-width: 100%; }
.architecture-switch .btn { border: 0; border-right: 1px solid var(--line); min-height: 44px; font-size: 14px; gap: 0; }
.architecture-switch .btn:last-child { border-right: 0; }
.architecture-switch button[aria-pressed=true] { color: var(--on-accent); background: var(--accent); }
.architecture-detail { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; padding: 28px 0; border-block: 1px solid var(--line); min-height: 300px; }
.architecture-detail h3 { margin: 12px 0; }
.architecture-detail p { font-size: 16px; color: var(--fg-2); }
.architecture-detail .architecture-boundary { margin-top: 18px; font-size: 14px; color: var(--warn); }
.architecture-detail nav { display: grid; align-content: start; }
.architecture-detail nav a { display: flex; justify-content: space-between; gap: 10px; padding: 13px 0; border-bottom: 1px solid var(--line); text-decoration: none; font-family: var(--mono); font-size: 12px; overflow-wrap: anywhere; }
.stack-strip { display: flex; flex-wrap: wrap; gap: 8px 24px; color: var(--fg-2); font: 12px var(--mono); letter-spacing: 0.04em; }
.security-detail { display: grid; gap: 24px; padding: clamp(20px, 3vw, 32px); border: 1px solid var(--line-strong); background: var(--bg-2); }
.security-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.security-columns > div { display: grid; align-content: start; gap: 12px; }
.security-columns > div + div { border-left: 1px solid var(--line); padding-left: 28px; }
.security-columns p, .security-example p { font-size: 15px; line-height: 1.7; color: var(--fg-2); }
.security-example { display: grid; gap: 8px; border-left: 2px solid var(--accent); padding-left: 16px; }
.security-example h4 { font-size: 14px; }
#security > .btn { justify-self: start; }

@media (max-width: 860px) {
  .split, .facts-list, .architecture-detail, .security-columns { grid-template-columns: 1fr; }
  .split > div + div { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; padding-top: 32px; }
  .security-columns > div + div { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; padding-top: 20px; }
  .demo-layout { grid-template-columns: 1fr; }
  #demo-steps { flex-direction: row; flex-wrap: wrap; border-right: 0; border-bottom: 1px solid var(--line); padding: 8px; }
  #demo-steps button { font-size: 13px; gap: 8px; padding: 10px 12px; border-left: 0; border-bottom: 2px solid transparent; }
  #demo-steps button[aria-current] { border-bottom-color: var(--accent); }
  .demo-detail, .architecture-detail { min-height: 0; }
  section { padding-block: 64px; }
}
@media (max-width: 560px) {
  .challenge { display: none; }
  .bar-inner { display: grid; grid-template-columns: 1fr auto; gap: 8px 12px; padding-block: 10px; }
  .bar-right { display: contents; }
  .bar .btn { grid-column: 1 / -1; justify-content: center; padding: 8px 12px; font-size: 14px; gap: 10px; }
  .menu { position: static; }
  .menu summary { min-height: 44px; display: flex; align-items: center; }
  /* Anchor to the header so the dropdown cannot extend beyond a narrow screen. */
  .menu-list { left: var(--gutter-left); right: var(--gutter-right); top: 100%; min-width: 0; max-height: 60vh; overflow-y: auto; }
  .hero h1 { font-size: clamp(40px, 11.5vw, 54px); }
  .wordmark { font-size: 18px; letter-spacing: 0.28em; }
  .row { grid-template-columns: 40px minmax(0, 1fr) 24px; gap: 12px; }
  .rows .more { grid-column: 1 / -1; }
  .numbers { grid-template-columns: 1fr; }
  .sample-roles { grid-template-columns: 1fr; gap: 8px; }
  .sample-roles br { display: none; }
  .sample-roles b { margin-left: 10px; }
  .pill { white-space: normal; }
  .ledger { font-size: 14px; }
  .ledger .num { font-size: 15px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
@media print {
  :root { color-scheme: light; --bg: white; --bg-2: white; --fg: #111; --fg-2: #333; --fg-3: #555; --line: #bbb; --line-strong: #777; --accent: #17613e; --warn: #634800; --ok: #165b35; }
  #progress, .bar, .skip, .actions, .section-nav, .demo-actions, .review-actions, .text-button, #demo-steps, .architecture-switch, .download { display: none !important; }
  main { padding: 0; }
  section { padding-block: 28px; }
  .split, .facts-list, .architecture-detail, .demo-layout { grid-template-columns: 1fr; }
  .demo-detail { min-height: 0; }
  section { break-inside: avoid; }
  a { text-decoration: none; }
  .hero h1 { font-size: 48px; } h2 { font-size: 26px; }
  body, p { font-size: 11pt; }
}