:root {
  color-scheme: dark;
  --bg: #0b0d0a;
  --surface: #10140e;
  --surface-raised: #151a13;
  --text: #dbe6d2;
  --muted: #b9c9b0;
  --dim: #788472;
  --line: #263023;
  --line-strong: #3a4835;
  --accent: #7dff6b;
  --accent-soft: rgba(125, 255, 107, 0.09);
  --amber: #ffb454;
  --danger: #ff9f8f;
  --sidebar: 252px;
  --bar: 30px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--bg); scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.6; }
button, input, select { font: inherit; }
a { color: inherit; }
[hidden] { display: none !important; }

.prototype-bar {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: var(--bar);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  background: var(--accent);
  color: #071006;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-align: center;
}

.app-shell { min-height: 100svh; padding-top: var(--bar); }
.sidebar {
  position: fixed;
  z-index: 30;
  inset: var(--bar) auto 0 0;
  width: var(--sidebar);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: var(--surface);
}
.landing-link {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 26px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}
.landing-link:hover,
.landing-link:focus-visible {
  background: var(--accent-soft);
  color: var(--accent);
  outline: 1px solid var(--accent);
  outline-offset: -1px;
}
.brand {
  display: block;
  padding: 30px 26px 26px;
  border-bottom: 1px solid var(--line);
  color: var(--accent);
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 1;
  text-decoration: none;
}
.brand small { display: block; margin-top: 9px; color: var(--muted); font-size: 10px; font-weight: 400; letter-spacing: 0.08em; }
.primary-nav { display: grid; gap: 3px; padding: 26px 14px; }
.primary-nav a {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 45px;
  padding: 0 12px;
  color: var(--muted);
  text-decoration: none;
  transition: color 130ms ease;
}
.primary-nav a span { color: var(--dim); font-size: 10px; }
.primary-nav a:hover,
.primary-nav a:focus-visible,
.primary-nav a[aria-current="page"] { background: var(--accent-soft); color: var(--text); outline: none; }
.primary-nav a[aria-current="page"] span { color: var(--accent); }
.sidebar-context { display: grid; gap: 5px; margin: auto 26px 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.sidebar-context strong { font-weight: 500; }
.sidebar-context > span:last-child { color: var(--accent); font-size: 11px; }
.secondary-nav { border-top: 1px solid var(--line); }
.settings-link, .admin-link { display: flex; justify-content: space-between; padding: 13px 26px; color: var(--muted); text-decoration: none; }
.settings-link:hover, .settings-link:focus-visible, .settings-link[aria-current="page"], .admin-link:hover, .admin-link:focus-visible { color: var(--accent); outline: none; }

.workspace { min-height: calc(100svh - var(--bar)); margin-left: var(--sidebar); }
.topbar {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 38px;
  border-bottom: 1px solid var(--line);
}
.crumb { display: flex; gap: 8px; color: var(--dim); font-size: 11px; }
.crumb strong { color: var(--muted); font-weight: 400; }
.sample-account { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 11px; }
.sample-account i { width: 30px; height: 30px; display: grid; place-items: center; border: 1px solid var(--line-strong); color: var(--accent); font-style: normal; }
.main { width: min(1120px, calc(100% - 80px)); margin: 0 auto; padding: 58px 0 92px; }

.screen { animation: screen-in 180ms ease-out both; }
.screen-head { display: flex; align-items: end; justify-content: space-between; gap: 34px; margin-bottom: 42px; }
.screen-head.compact { align-items: start; }
.screen-head > div:first-child { max-width: 780px; }
.welcome-head > div:first-child { max-width: 830px; }
.screen-marker { display: inline-block; margin-bottom: 17px; color: var(--accent); font-size: 9px; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
.kicker, .eyebrow { color: var(--dim); font-size: 10px; letter-spacing: 0.11em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 18ch; margin-bottom: 14px; color: var(--text); font-size: clamp(28px, 3.6vw, 44px); font-weight: 500; letter-spacing: -0.045em; line-height: 1.05; }
h1[tabindex="-1"]:focus { outline: none; }
h1 span { color: var(--accent); }
h2 { margin-bottom: 12px; color: var(--text); font-size: 22px; font-weight: 500; letter-spacing: -0.03em; line-height: 1.2; }
h3 { margin-bottom: 7px; color: var(--dim); font-size: 10px; font-weight: 500; letter-spacing: 0.09em; text-transform: uppercase; }
.lede { max-width: 68ch; margin-bottom: 0; color: var(--muted); font-size: 15px; }
.lede strong { color: var(--text); font-weight: 500; }
.head-actions, .dialog-actions, .form-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  padding: 9px 15px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  transition: border-color 130ms ease, color 130ms ease, background 130ms ease, transform 130ms ease;
}
.button:hover { transform: translateY(-1px); }
.button:hover, .button:focus-visible { border-color: var(--accent); color: var(--accent); outline: none; }
.button.primary { border-color: var(--accent); background: var(--accent); color: #071006; }
.button.primary:hover, .button.primary:focus-visible { background: transparent; color: var(--accent); }
.button.quiet { color: var(--muted); }
.text-link { color: var(--accent); text-underline-offset: 4px; }

.how-it-works { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; padding: 0; border-block: 1px solid var(--line-strong); list-style: none; }
.how-it-works li { display: grid; grid-template-columns: auto 1fr; gap: 18px; padding: 30px 24px; border-right: 1px solid var(--line); }
.how-it-works li:last-child { border-right: 0; }
.how-it-works li > span { color: var(--accent); font-size: 11px; }
.how-it-works h2 { font-size: 18px; }
.how-it-works p { margin: 0; color: var(--muted); }

.brief-cover { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.45fr); border-block: 1px solid var(--line-strong); }
.brief-intro { position: relative; padding: 50px 54px 52px 0; }
.brief-number { position: absolute; inset: 28px 30px auto auto; color: var(--dim); font-size: 11px; }
.brief-intro h2 { max-width: 17ch; margin: 8px 0 22px; font-size: clamp(24px, 3vw, 34px); letter-spacing: -0.04em; }
.brief-intro > p:not(.eyebrow) { max-width: 66ch; color: var(--muted); font-size: 15px; }
.brief-aside { padding: 50px 0 48px 34px; border-left: 1px solid var(--line); }
.brief-aside > strong { display: block; margin: 7px 0 25px; font-size: 18px; font-weight: 500; }
.brief-aside dl, .inline-facts { display: grid; margin: 0; }
.brief-aside dl div, .inline-facts div { padding: 12px 0; border-top: 1px solid var(--line); }
dt { color: var(--dim); font-size: 10px; letter-spacing: 0.07em; text-transform: uppercase; }
dd { margin: 3px 0 0; color: var(--muted); }
.proof-line { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin: 32px 0; }
.proof-line div { padding-top: 14px; border-top: 1px solid var(--line); }
.state-strip { display: flex; flex-wrap: wrap; gap: 18px 28px; align-items: center; padding: 20px 0; border-bottom: 1px solid var(--line); color: var(--dim); font-size: 11px; }
.state-strip a { color: var(--muted); }
.state-strip a:hover, .state-strip a:focus-visible { color: var(--accent); outline: none; }
.truth-note { margin: 22px 0 0; padding-left: 14px; border-left: 2px solid var(--accent); color: var(--muted); font-size: 11px; }

.signal { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 34px; padding: 38px 0; border-top: 1px solid var(--line); }
.signal-rank { display: grid; align-content: start; gap: 4px; color: var(--accent); }
.signal-rank span { font-size: 30px; }
.signal-rank small { color: var(--dim); }
.signal-body > p { max-width: 70ch; color: var(--muted); }
.evidence-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 30px; margin-top: 28px; }
.evidence-grid div { padding-top: 13px; border-top: 1px solid var(--line); }
.evidence-grid p { margin: 0; color: var(--muted); }
code { color: var(--accent); overflow-wrap: anywhere; }
.brief-footer { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 28px 0; border-block: 1px solid var(--line-strong); }
.brief-footer p { margin: 5px 0 0; color: var(--muted); }

.empty-state, .failure-state { min-height: 430px; display: grid; align-content: center; border-block: 1px solid var(--line); }
.empty-state { grid-template-columns: 180px minmax(0, 560px); gap: 42px; }
.empty-mark { color: var(--line-strong); font-size: 56px; letter-spacing: -0.06em; }
.empty-state p, .failure-state p { color: var(--muted); }
.failure-state { max-width: 760px; }
.failure-code { margin-bottom: 18px; color: var(--danger); font-size: 10px; letter-spacing: 0.12em; }
.failure-state .button { justify-self: start; margin-top: 18px; }
.source-preview { margin: 0 0 32px; padding: 42px; border-block: 1px solid var(--line-strong); color: var(--text); font-family: ui-sans-serif, system-ui, sans-serif; font-size: clamp(22px, 3vw, 34px); line-height: 1.35; }

.monitor-row { display: grid; grid-template-columns: minmax(240px, 1.3fr) 0.7fr 1fr auto; gap: 28px; align-items: center; padding: 30px 0; border-block: 1px solid var(--line-strong); }
.monitor-list { display: grid; gap: 1px; }
.monitor-list .monitor-row + .monitor-row { border-top: 0; }
.monitor-main { display: flex; gap: 15px; align-items: start; }
.monitor-main a { color: var(--text); font-size: 18px; text-underline-offset: 4px; }
.monitor-name { border: 0; padding: 0; background: none; color: var(--text); cursor: pointer; font: inherit; font-size: 18px; text-align: left; text-decoration: underline; text-underline-offset: 4px; }
.monitor-name:hover, .monitor-name:focus-visible { color: var(--accent); outline: none; }
.monitor-main p { margin: 4px 0 0; color: var(--muted); font-size: 11px; }
.monitor-row strong { display: block; margin-top: 5px; color: var(--muted); font-weight: 400; }
.status-dot { width: 8px; height: 8px; flex: 0 0 auto; margin-top: 9px; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.status-dot.paused { background: var(--dim); box-shadow: none; }
.monitor-action { display: flex; gap: 12px; align-items: center; }
.status-label { color: var(--accent); }
.status-label.paused { color: var(--muted); }
.history-line { display: grid; margin-top: 44px; }
.history-line > span { margin-bottom: 9px; }
.history-line a { display: grid; grid-template-columns: 120px 1fr auto; gap: 20px; padding: 18px 0; border-top: 1px solid var(--line); color: var(--muted); text-decoration: none; }
.history-line a:hover, .history-line a:focus-visible { color: var(--accent); outline: none; }
.history-line strong { color: var(--text); font-weight: 400; }

.monitor-form { display: grid; grid-template-columns: 1fr 1fr; gap: 3px 34px; max-width: 900px; }
.form-field { display: grid; gap: 8px; padding: 18px 0; border-top: 1px solid var(--line); }
.form-field.wide, .form-actions.wide, .form-note { grid-column: 1 / -1; }
label { color: var(--muted); font-size: 11px; }
label::before { content: "> "; color: var(--accent); }
input, select { width: 100%; min-height: 46px; border: 1px solid var(--line-strong); border-radius: 0; padding: 10px 12px; background: var(--surface); color: var(--text); outline: none; }
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.form-field small { color: var(--dim); }
.form-note { margin: 22px 0; padding: 20px 0; border-block: 1px solid var(--line); }
.form-note p { margin: 4px 0 0; color: var(--muted); }

.connect-layout { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 32px; }
.mail-preview, .payload-preview { min-width: 0; border: 1px solid var(--line-strong); background: var(--surface); }
.preview-head { display: flex; justify-content: space-between; gap: 16px; padding: 14px 18px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.preview-head em { color: var(--amber); font-style: normal; }
.mail-meta { display: grid; grid-template-columns: 72px 1fr; gap: 5px 16px; padding: 18px; border-bottom: 1px solid var(--line); font-size: 11px; }
.mail-meta span { color: var(--dim); }
.mail-meta strong { font-weight: 400; }
.mail-body { padding: 30px 28px; background: #e6eadf; color: #182016; font-family: ui-sans-serif, system-ui, sans-serif; }
.mail-body .eyebrow { color: #55624f; }
.mail-body h2 { color: #11170f; font-size: 26px; }
.mail-body ol { padding-left: 22px; }
.payload-preview pre { min-height: 100%; margin: 0; padding: 24px; overflow: auto; color: var(--accent); font-size: 11px; white-space: pre-wrap; }
.agent-connect { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1.2fr); gap: 50px; margin-top: 46px; padding: 34px 0; border-block: 1px solid var(--line-strong); }
.agent-connect p { color: var(--muted); }
.agent-connect dl { margin: 0; }
.agent-connect dl div { display: grid; grid-template-columns: 140px 1fr; gap: 20px; padding: 10px 0; border-top: 1px solid var(--line); }

.secondary-path, .completion-note { display: flex; align-items: center; justify-content: space-between; gap: 32px; margin-top: 34px; padding: 28px 0; border-block: 1px solid var(--line-strong); }
.secondary-path p, .completion-note p { margin: 0; color: var(--muted); }
.completion-note { justify-content: flex-start; }
.completion-note > span { color: var(--accent); font-size: 42px; }
.developer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.integration-copy { padding: 28px 0; }
.integration-copy p { color: var(--muted); }
.integration-copy dl div { display: grid; grid-template-columns: 120px 1fr; gap: 18px; padding: 12px 0; border-top: 1px solid var(--line); }
.key-state { display: grid; grid-template-columns: 160px minmax(180px, 0.7fr) 1fr; gap: 24px; align-items: center; margin-top: 30px; padding: 22px 0; border-block: 1px solid var(--line); }
.key-state strong { font-weight: 500; }
.key-dialog-state { padding: 12px; border: 1px solid var(--line); color: var(--accent); }

.review-list { margin: 0; border-top: 1px solid var(--line-strong); }
.review-list div { display: grid; grid-template-columns: 190px 1fr; gap: 30px; padding: 19px 0; border-bottom: 1px solid var(--line); }
.review-list dd { color: var(--text); }
.process-explainer { margin-top: 34px; border-block: 1px solid var(--line-strong); padding: 22px 0; }
.process-explainer summary { color: var(--accent); cursor: pointer; font-weight: 700; }
.process-explainer ol { max-width: 780px; padding-left: 22px; color: var(--muted); }
.process-explainer p { max-width: 780px; margin: 14px 0 0; color: var(--muted); }

.settings-list { border-top: 1px solid var(--line-strong); }
.settings-list section { display: grid; grid-template-columns: minmax(180px, 0.45fr) minmax(300px, 0.65fr) minmax(240px, 1fr); gap: 36px; align-items: start; padding: 30px 0; border-bottom: 1px solid var(--line); }
.settings-list section > * { min-width: 0; }
.settings-list h2 { margin: 0; overflow-wrap: anywhere; }
.settings-list section:first-child h2 { font-size: 18px; }
.settings-list p { margin: 0; color: var(--muted); }
.settings-list .button { justify-self: start; }
.demo-state { display: block; color: var(--accent); font-size: 11px; font-weight: 500; }
.row-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }

.toast { position: fixed; z-index: 110; right: 22px; bottom: 22px; max-width: 360px; padding: 13px 17px; border: 1px solid var(--accent); background: var(--surface-raised); color: var(--text); box-shadow: 14px 14px 0 rgba(0, 0, 0, 0.35); }
dialog { width: min(520px, calc(100% - 32px)); border: 1px solid var(--line-strong); padding: 0; background: var(--surface-raised); color: var(--text); box-shadow: 22px 22px 0 rgba(0, 0, 0, 0.35); }
dialog::backdrop { background: rgba(3, 5, 3, 0.82); backdrop-filter: blur(2px); }
.dialog-panel { padding: 28px; }
.dialog-panel p { color: var(--muted); }
.dialog-actions { justify-content: flex-end; margin-top: 24px; }

@keyframes screen-in { from { opacity: 0; transform: translateY(7px); } }

@media (max-width: 1180px) {
  .settings-list section { grid-template-columns: 1fr 1fr; }
  .settings-list section p { grid-column: 1 / -1; }
}

@media (max-width: 980px) {
  :root { --sidebar: 220px; }
  .main { width: min(100% - 48px, 900px); }
  .brief-cover, .connect-layout, .developer-grid { grid-template-columns: 1fr; }
  .brief-aside { padding: 32px 0; border-top: 1px solid var(--line); border-left: 0; }
  .monitor-row { grid-template-columns: 1fr 1fr; }
  .monitor-action { justify-content: flex-end; }
  .agent-connect { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  :root { --bar: 42px; }
  .prototype-bar { justify-content: flex-start; font-size: 8px; line-height: 1.35; text-align: left; }
  .sidebar { position: static; width: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .landing-link { min-height: 40px; padding: 8px 18px; }
  .brand { padding: 20px 18px 16px; }
  .primary-nav { grid-template-columns: repeat(3, 1fr); padding: 7px 9px 10px; }
  .primary-nav a { min-height: 52px; justify-content: center; gap: 5px; padding: 5px 6px; font-size: 10px; line-height: 1.25; text-align: center; }
  .primary-nav a span { display: none; }
  .sidebar-context { display: none; }
  .secondary-nav { position: absolute; top: calc(var(--bar) + 12px); right: 12px; display: grid; border: 0; background: var(--surface); }
  .settings-link, .admin-link { padding: 3px 6px; font-size: 9px; }
  .workspace { margin-left: 0; }
  .topbar { min-height: 52px; padding: 0 16px; }
  .sample-account span { display: none; }
  .main {
    width: min(100% - 30px, 640px);
    padding: 38px 0 calc(112px + env(safe-area-inset-bottom));
  }
  .screen { animation: none; }
  .screen:not([hidden]) [data-primary-action] {
    position: fixed;
    z-index: 80;
    right: 15px;
    bottom: max(14px, env(safe-area-inset-bottom));
    left: 15px;
    width: auto;
    min-height: 48px;
    border-color: var(--accent);
    background: var(--accent);
    color: #071006;
    box-shadow: 0 0 0 8px var(--bg), 0 -16px 34px rgba(10, 13, 9, 0.9);
  }
  .screen-head { display: grid; align-items: start; gap: 22px; margin-bottom: 30px; }
  .head-actions { align-items: stretch; }
  .head-actions .button { flex: 1 1 auto; }
  h1 { font-size: clamp(30px, 9vw, 40px); }
  .brief-intro { padding: 38px 0; }
  .brief-number { inset: 18px 0 auto auto; }
  .brief-intro h2 { padding-right: 15px; }
  .proof-line, .evidence-grid, .monitor-form { grid-template-columns: 1fr; }
  .how-it-works { grid-template-columns: 1fr; }
  .how-it-works li { border-right: 0; border-bottom: 1px solid var(--line); }
  .how-it-works li:last-child { border-bottom: 0; }
  .form-field.wide, .form-actions.wide, .form-note { grid-column: auto; }
  .signal { grid-template-columns: 1fr; gap: 12px; }
  .signal-rank { display: flex; align-items: baseline; gap: 10px; }
  .empty-state { grid-template-columns: 1fr; gap: 10px; }
  .empty-mark { font-size: 56px; }
  .monitor-row { grid-template-columns: 1fr; gap: 20px; }
  .monitor-action { justify-content: space-between; }
  .history-line a { grid-template-columns: 84px 1fr; }
  .history-line a span { grid-column: 2; }
  .mail-body { padding: 24px 20px; }
  .agent-connect dl div { grid-template-columns: 1fr; gap: 4px; }
  .settings-list section { grid-template-columns: 1fr; gap: 10px; }
  .settings-list section p { grid-column: auto; }
  .brief-footer { align-items: start; flex-direction: column; }
  .secondary-path { align-items: flex-start; flex-direction: column; }
  .key-state, .review-list div { grid-template-columns: 1fr; gap: 5px; }
  .source-preview { padding: 30px 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}