/* Agent Relay landing — ThatMgmt UI kit, dark theme.
   Same tokens as the app (see style.css). Strictly black and white:
   no accent color, no rounded corners, no shadows. Type does the work.
   Kit rule: display type aligns left, always. */

:root {
  color-scheme: dark;

  --color-background: #0a0a0a;
  --color-surface: #171717;
  --color-text: #f7f7f5;
  --color-text-secondary: #a9a9a5;
  --color-border: #41413f;
  --color-border-strong: #f7f7f5;

  --font-display: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-weight-display: 720;
  --font-weight-heading: 650;
  --font-weight-body: 400;
  --font-weight-label: 500;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 40px;
  --space-8: 48px;
  --space-9: 64px;
  --space-10: 96px;

  --state-active-opacity: 0.8;
  --focus-outline-width: 2px;
  --focus-outline-offset: 2px;
}
* { box-sizing: border-box; }
html {
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
}
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: var(--font-weight-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}
:focus-visible {
  outline: var(--focus-outline-width) solid var(--color-border-strong);
  outline-offset: var(--focus-outline-offset);
}
:focus:not(:focus-visible) { outline: none; }

code {
  font-family: var(--font-mono);
  font-weight: var(--font-weight-label);
  font-size: 0.92em;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0;
  padding: 1px 6px;
}
.logo-img { border-radius: 0; display: block; }
a, button, [role="button"] {
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  text-decoration: none;
  font-weight: var(--font-weight-heading);
  font-size: 16px;
}
.brand .logo-img { width: 30px; height: 30px; }

/* UK-002 buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  color: var(--color-text);
  text-decoration: none;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: 0;
  padding: var(--space-2) var(--space-4);
  font-weight: var(--font-weight-heading);
  font-size: 14px;
}

.btn:active { opacity: var(--state-active-opacity); }
.btn.primary {
  background: var(--color-text);
  color: var(--color-background);
  border-color: var(--color-border-strong);
}

main { flex: 1; }
.hero {
  text-align: left;
  padding: var(--space-10) var(--space-5) var(--space-9);
  max-width: 960px;
  margin: 0 auto;
}
.hero-mark { width: 84px; height: 84px; margin: 0 0 var(--space-5); }
.hero h1 {
  font-size: 36px;
  font-weight: var(--font-weight-display);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-3);
  max-width: 640px;
}
.lede { font-size: 18px; line-height: 1.6; margin: 0 0 var(--space-3); max-width: 640px; }
.sub { color: var(--color-text-secondary); font-size: 16px; line-height: 1.6; margin: 0 0 var(--space-6); max-width: 640px; }
.cta { display: flex; gap: var(--space-3); flex-wrap: wrap; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--space-5) var(--space-9);
}
.step {
  border: 1px solid var(--color-border);
  border-radius: 0;
  background: var(--color-surface);
  padding: var(--space-5);
}
.step-n {
  font-family: var(--font-mono);
  font-weight: var(--font-weight-label);
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}
.step h2 { font-size: 18px; font-weight: var(--font-weight-heading); margin: 0 0 var(--space-2); }
.step p { color: var(--color-text-secondary); font-size: 14px; line-height: 1.6; margin: 0; }

.cli { max-width: 720px; margin: 0 auto; padding: 0 var(--space-5) var(--space-10); }
.cli h2 { font-size: 22px; font-weight: var(--font-weight-heading); margin: 0 0 var(--space-4); }
.cli pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0;
  padding: 20px;
  overflow-x: auto;
  margin: 0;
}
.cli pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-text);
}

footer {
  border-top: 1px solid var(--color-border);
  padding: 20px var(--space-5);
  color: var(--color-text-secondary);
  font-size: 13px;
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  flex-wrap: wrap;
}
footer a { color: var(--color-text-secondary); }

.foot-sep { margin: 0 var(--space-2); }

@media (max-width: 700px) {
  .hero { padding: var(--space-9) 20px var(--space-7); }
  .hero h1 { font-size: 28px; }
  .steps { grid-template-columns: 1fr; padding: 0 20px var(--space-7); }
  .cli { padding: 0 20px var(--space-9); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* mobile-native: gate every hover behind capability — touch has no hover */
@media (hover: hover) and (pointer: fine) {
  .btn:hover { background: var(--color-background); border-color: var(--color-border-strong); }
  .btn.primary:hover { background: var(--color-text-secondary); }
  footer a:hover { color: var(--color-text); }
}