/* Inzo — launch site.
   Brand register per PRODUCT.md: assured, lucid, kinetic. Accessibility is a
   commitment, not a nicety: WCAG 2.2 AA contrast, visible focus, honored
   reduced-motion, and no meaning carried by colour alone. */

:root {
  --ink: #18202d;
  --muted: #5a6878;        /* 5.55:1 on --paper — AA */
  --line: #dfe5ed;
  --blue: #1f5ce0;         /* 5.58:1 on --paper — AA */
  --green: #2f9c4a;
  --orange: #d94f2f;
  --paper: #fbfcfe;
  --soft: #f2f5f9;
  --dark-muted: #b9c3d1;   /* 9.19:1 on --ink — AAA */
  --focus: #1f5ce0;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Every interactive element gets a visible, high-contrast focus ring.
   Keyboard parity is not optional. */
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  z-index: 10;
  background: var(--ink);
  color: #fff;
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}
.skip-link:focus { left: 24px; }

header, main, footer {
  max-width: 1220px;
  margin: auto;
  padding-inline: 36px;
}

header {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; color: var(--ink); text-decoration: none; }
.brand img { display: block; height: 30px; width: auto; }

nav { display: flex; gap: 28px; margin-left: auto; margin-right: 8px; }
nav a, footer a { font-size: 14px; color: var(--muted); text-decoration: none; }
nav a:hover, footer a:hover { color: var(--ink); text-decoration: underline; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 9px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  padding: 14px 18px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .2s, background .2s;
}
.button:hover { transform: translateY(-2px); background: var(--blue); }
.button-small { padding: 10px 14px; }

.link-button {
  border: 0;
  background: none;
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}
.link-button:hover { color: var(--blue); }
.link-button b { color: var(--blue); font-size: 20px; }

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

.hero {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 64px;
  align-items: center;
  padding: 76px 0 96px;
}

.label {
  font-size: 11px;
  color: var(--blue);
  font-weight: 800;
  letter-spacing: .1em;
  margin: 0 0 18px;
}
.label span {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--green);
  border-radius: 50%;
  margin-right: 7px;
}

.hero h1, .statement h2, .trust h2, .access h2, .runway h2 {
  font-size: clamp(44px, 5.4vw, 72px);
  line-height: .98;
  letter-spacing: -.05em;
  margin: 0;
  text-wrap: balance;
}
.hero h1 em, .statement em, .access em {
  font-family: Newsreader, Georgia, serif;
  font-style: italic;
  font-weight: 400;
  color: var(--blue);
}

.hero-copy > p:not(.label) {
  font-size: 18px;
  color: var(--muted);
  max-width: 510px;
  margin: 26px 0;
}

.hero-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }

.proof {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--muted);
  font-size: 12px;
  margin-top: 36px;
}
.avatars { display: flex; }
.avatars i {
  width: 20px;
  height: 20px;
  border: 2px solid var(--paper);
  border-radius: 50%;
  margin-left: -5px;
}
.avatars i:nth-child(1) { background: var(--blue); }
.avatars i:nth-child(2) { background: var(--green); }
.avatars i:nth-child(3) { background: var(--orange); }

/* --- demo ------------------------------------------------------------- */

.demo {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 14px 32px rgba(22, 38, 63, .11);
  overflow: hidden;
  transform: rotate(1.5deg);
  transition: transform .3s;
}
.demo:hover, .demo:focus-within { transform: rotate(0); }

.demo-bar, .demo-footer {
  min-height: 42px;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  background: #f8fafc;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}
.pulse, .blue-dot, .green-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 6px;
}
.blue-dot { background: var(--blue); }

.demo-main { display: flex; min-height: 355px; }
.demo-main aside {
  width: 48px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 0;
  gap: 12px;
}
.side-logo { color: var(--blue); display: block; margin-bottom: 14px; }
.side-logo img { display: block; }
.demo-main aside button {
  border: 0;
  background: none;
  color: #8b96a6;
  font-size: 17px;
  width: 32px;
  height: 32px;
  border-radius: 7px;
  cursor: default;
}
.demo-main aside button.active { color: var(--blue); background: #edf2ff; }

.demo-thread { flex: 1; padding: 16px; }
.thread-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.thread-header strong { font-size: 13px; display: block; }
.thread-header span { font-size: 10px; color: var(--muted); }
.thread-header span b {
  display: inline-block;
  background: var(--green);
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.thread-header button {
  font-size: 10px;
  border: 0;
  background: none;
  color: var(--blue);
  font-weight: 700;
  cursor: pointer;
}

.messages { padding: 13px 0; min-height: 181px; }
.messages article {
  width: 86%;
  padding: 10px 12px;
  background: #f3f6fa;
  border-radius: 9px;
  font-size: 11px;
  margin: 7px 0;
}
.messages article.agent-a { margin-left: auto; background: #edf2ff; }
.messages article.agent-b { background: #eff8ee; }
.messages article.system { width: 100%; background: #fff4ee; }
.messages small, .proposal span {
  font-size: 8px;
  letter-spacing: .09em;
  font-weight: 800;
  color: var(--muted);
}
.messages p { margin: 4px 0 0; }
.messages code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .95em;
  background: #e6ebf3;
  padding: 1px 4px;
  border-radius: 3px;
}

.proposal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px;
  background: #f7f9fc;
  border: 1px solid var(--line);
  border-radius: 10px;
}
.proposal strong { display: block; font-size: 12px; }
.proposal p { display: flex; gap: 6px; flex-wrap: wrap; margin: 6px 0 0; }
.proposal i {
  font-style: normal;
  font-size: 9px;
  font-weight: 700;
  color: var(--muted);
  background: #eef1f6;
  border-radius: 4px;
  padding: 2px 6px;
}
.proposal button {
  background: var(--blue);
  color: #fff;
  border: 0;
  border-radius: 7px;
  padding: 9px 10px;
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}
/* Locked state is signalled by border, background AND the ✓ glyph in the
   status text — never by colour alone. */
.proposal.locked { border-color: var(--green); background: #f1fbf2; }
#status.approved { color: #217a38; font-weight: 800; }

/* --- logos ------------------------------------------------------------ */

.logos {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 26px 0;
  display: flex;
  gap: 26px;
  align-items: center;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 13px;
}
.logos b { color: var(--ink); font-size: 14px; }

/* --- statement + features --------------------------------------------- */

.statement { padding: 130px 0 76px; }
.statement h2 { max-width: 860px; }
.intro { font-size: 18px; color: var(--muted); max-width: 600px; margin: 28px 0 0; }

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  padding-bottom: 130px;
}
.features article {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
}
.feature-icon {
  display: flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-weight: 800;
  font-size: 20px;
}
.blue { color: var(--blue); background: #edf2ff; }
.green { color: #217a38; background: #eaf7ec; }
.orange { color: var(--orange); background: #fff0ec; }

.features h3, .trust h3 { font-size: 19px; letter-spacing: -.03em; margin: 22px 0 7px; }
.features p, .access > p { margin: 0; color: var(--muted); font-size: 14px; }

/* --- trust ------------------------------------------------------------ */

.trust {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 72px;
  padding: 80px 70px;
  background: var(--ink);
  color: #fff;
  border-radius: 18px;
}
.trust h2 { font-size: clamp(38px, 4vw, 52px); }
.trust .label { color: #8fb0ff; }
.trust > div > p:not(.label) { margin-top: 22px; color: var(--dark-muted); max-width: 420px; font-size: 15px; }
.trust-note a { color: #8fb0ff; font-weight: 700; }

.trust-list article {
  display: flex;
  gap: 18px;
  padding: 20px 0;
  border-top: 1px solid #364150;
}
.trust-list article:first-child { border-top: 0; padding-top: 0; }
.trust-list article b { color: #ff8a6b; font-size: 12px; padding-top: 4px; }
.trust-list h3 { margin: 0 0 6px; }
.trust-list p { color: var(--dark-muted); font-size: 14px; margin: 0; }
.trust-list code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .92em;
  background: #2a3444;
  padding: 1px 5px;
  border-radius: 4px;
}

/* --- runway ----------------------------------------------------------- */

.runway {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  padding: 130px 0;
}
.runway h2 { font-size: clamp(38px, 4vw, 52px); }
.runway-copy p:not(.label) { color: var(--muted); font-size: 16px; margin: 22px 0 0; max-width: 460px; }

.runway-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.runway-stats > div { background: #fff; padding: 28px 26px; }
.runway-stats dt {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--muted);
}
.runway-stats dd {
  margin: 8px 0 0;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -.04em;
}
.runway-stats dd.ok { color: #217a38; }

/* --- access ----------------------------------------------------------- */

/* --- quickstart --------------------------------------------------------- */

.quickstart { padding: 80px 0 40px; text-align: center; }
.quickstart h2 { font-size: clamp(32px, 4vw, 44px); margin: 8px 0 0; }
.quickstart > p:not(.label) { color: var(--muted); font-size: 16px; margin: 18px auto 40px; max-width: 560px; }

.qs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  text-align: left;
  max-width: 900px;
  margin: 0 auto;
}
.qs-step-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .05em;
  color: var(--muted);
  margin: 18px 0 8px;
}
.qs-step-label:first-child { margin-top: 0; }

.code-block {
  margin: 0;
  padding: 16px 18px;
  background: var(--ink);
  color: #d7e0ee;
  border-radius: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
}
.code-block code { background: none; padding: 0; }

#copy-quickstart { margin-top: 32px; }

.access { text-align: center; padding: 120px 20px 140px; }
.access h2 { font-size: clamp(42px, 5vw, 64px); }
.access-mark { display: block; margin: 0 auto 24px; color: var(--ink); }
.access > p { font-size: 17px; margin: 20px auto 28px; }
.access-actions { display: flex; gap: 24px; align-items: center; justify-content: center; flex-wrap: wrap; }

footer {
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-block: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
footer p { margin: 0; }
footer div { display: flex; gap: 20px; }

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

@media (max-width: 1000px) {
  .hero, .runway { grid-template-columns: 1fr; gap: 48px; }
  .trust { grid-template-columns: 1fr; gap: 44px; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .qs-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  header, main, footer { padding-inline: 20px; }
  header { height: auto; padding-block: 16px; flex-wrap: wrap; }
  /* Nav collapses to a compact scrollable row rather than disappearing —
     hiding navigation on small screens is a content loss, not a layout fix. */
  nav {
    order: 3;
    width: 100%;
    margin: 4px 0 0;
    gap: 20px;
    font-size: 13px;
    overflow-x: auto;
  }
  .hero { padding: 56px 0 72px; }
  .demo { transform: none; }
  .statement { padding: 80px 0 52px; }
  .features { grid-template-columns: 1fr; padding-bottom: 80px; }
  .trust { margin: 0; padding: 48px 26px; }
  .runway { padding: 80px 0; }
  .runway-stats > div { padding: 20px 18px; }
  .runway-stats dd { font-size: 26px; }
  .access { padding: 90px 12px 100px; }
  .proof { align-items: flex-start; }
}

/* --- motion ----------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .demo { transform: none; }
  .button:hover { transform: none; }
}