/*
 * AgentObs landing page.
 *
 * Shares the dashboard's design tokens (src/server/public/app.css) so the
 * marketing page and the product look like one thing. Colors come from the
 * same validated palette; light values on bare :root, dark redefined under
 * both the OS media query and an explicit [data-theme] scope.
 */

:root {
  color-scheme: light;

  --page: #f9f9f7;
  --surface: #fcfcfb;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --grid: #e1e0d9;
  --border: rgba(11, 11, 11, 0.1);
  --raised: rgba(11, 11, 11, 0.04);

  --series-1: #2a78d6;
  --series-3: #1baf7a;
  --status-critical: #d03b3b;

  --radius: 12px;
  --radius-sm: 7px;
  --shadow: 0 1px 2px rgba(11, 11, 11, 0.05), 0 12px 32px -16px rgba(11, 11, 11, 0.16);
  --font: ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto,
    'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --grid: #2c2c2a;
    --border: rgba(255, 255, 255, 0.1);
    --raised: rgba(255, 255, 255, 0.05);
    --series-1: #3987e5;
    --series-3: #199e70;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 32px -16px rgba(0, 0, 0, 0.7);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--page);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--series-1);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
}

.skip-link {
  position: absolute;
  left: -9999px;
  background: var(--surface);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 10;
}
.skip-link:focus {
  left: 12px;
  top: 12px;
}

:focus-visible {
  outline: 2px solid var(--series-1);
  outline-offset: 2px;
}

/* ---------- nav ---------- */

.nav {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--series-1), var(--series-3));
}

.brand-name {
  font-weight: 660;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
}
.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  background: var(--surface);
}

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

.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 64px 24px 40px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 18px;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 6vw, 3.9rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
  font-weight: 690;
}

.lede {
  margin: 20px auto 0;
  max-width: 620px;
  font-size: clamp(1rem, 2.2vw, 1.16rem);
  color: var(--text-secondary);
}

.install {
  margin: 34px auto 0;
  max-width: 480px;
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.install code {
  flex: 1;
  padding: 13px 16px;
  text-align: left;
  font-size: 14px;
  overflow-x: auto;
  white-space: nowrap;
}

.install button {
  appearance: none;
  border: 0;
  border-left: 1px solid var(--border);
  background: var(--raised);
  color: var(--text-secondary);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 0 18px;
  cursor: pointer;
  min-width: 92px;
}
.install button:hover {
  color: var(--text-primary);
}

.install-note {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- strip ---------- */

.strip {
  max-width: 1080px;
  margin: 26px auto 0;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  text-align: center;
}

.strip div {
  padding: 18px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.strip strong {
  display: block;
  font-size: 15px;
}

.strip span {
  font-size: 13px;
  color: var(--text-muted);
}

@media (max-width: 720px) {
  .strip {
    grid-template-columns: 1fr;
  }
}

/* ---------- sections ---------- */

.section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 64px 24px 0;
}

.section h2 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  letter-spacing: -0.02em;
  font-weight: 670;
}

.section-lede {
  margin: 0 0 28px;
  max-width: 660px;
  color: var(--text-secondary);
}

/* ---------- steps ---------- */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.steps li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 20px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.step-n {
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--series-1);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 660;
}

.steps h3 {
  margin: 2px 0 10px;
  font-size: 16px;
  font-weight: 640;
}

.steps p {
  margin: 10px 0 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.steps > li > div {
  min-width: 0;
  flex: 1;
}

pre {
  margin: 0;
  padding: 14px 16px;
  background: var(--raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.55;
}

pre code {
  font-size: inherit;
}

.terminal {
  background: var(--surface);
  box-shadow: var(--shadow);
  margin-bottom: 34px;
}

.terminal .prompt {
  color: var(--text-muted);
}

.terminal .bad {
  color: var(--status-critical);
  font-weight: 660;
}

/* ---------- cards ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.cards article {
  padding: 20px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.cards h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 640;
}

.cards p {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
}

@media (max-width: 860px) {
  .cards {
    grid-template-columns: 1fr;
  }
}

/* ---------- checks ---------- */

.checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  max-width: 760px;
}

.checks li {
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  color: var(--text-secondary);
}

.checks li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: -1px;
  color: var(--series-3);
  font-weight: 700;
}

.checks strong {
  color: var(--text-primary);
  font-weight: 620;
}

.cta-row {
  margin: 34px 0 0;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  background: var(--series-1);
  color: #fff;
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 620;
  border: 1px solid transparent;
}

.btn:hover {
  filter: brightness(1.06);
}

.btn-ghost {
  background: var(--surface);
  color: var(--text-primary);
  border-color: var(--border);
}

/* ---------- footer ---------- */

.footer {
  max-width: 1080px;
  margin: 72px auto 0;
  padding: 26px 24px 44px;
  border-top: 1px solid var(--grid);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: var(--text-muted);
}

.footer a {
  color: var(--text-secondary);
}

/* ---------- product screenshot ---------- */

.shot {
  margin: 54px auto 0;
  max-width: 1000px;
}

/*
 * A browser-chrome frame around the screenshot. It reads as "this is a real
 * running app" rather than a marketing illustration, which is the whole
 * reason the image is here.
 */
.shot-frame {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow:
    0 2px 4px rgba(11, 11, 11, 0.04),
    0 24px 64px -24px rgba(11, 11, 11, 0.28);
  overflow: hidden;
}

.shot-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--raised);
}

.shot-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--grid);
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
}

.shot figcaption {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) .shot-frame {
    box-shadow:
      0 2px 4px rgba(0, 0, 0, 0.4),
      0 24px 64px -24px rgba(0, 0, 0, 0.8);
  }
}

/* ---------- narrow screens ---------- */

/*
 * The page must never scroll horizontally. The nav's link row and the
 * install command are the two things that push past the viewport on a
 * phone, so both are given explicit narrow-screen behaviour rather than
 * relying on flex-wrap alone.
 */
@media (max-width: 760px) {
  .nav {
    padding: 16px 18px;
    justify-content: center;
    gap: 12px;
  }

  .nav-links {
    width: 100%;
    justify-content: center;
    gap: 16px;
    font-size: 13.5px;
    flex-wrap: wrap;
  }

  .hero {
    padding: 36px 18px 28px;
  }

  h1 {
    /* The hard <br> is a desktop line break; let it reflow naturally here. */
    font-size: clamp(1.9rem, 8.5vw, 2.6rem);
  }

  .desktop-break {
    display: none;
  }

  .install {
    max-width: 100%;
  }

  .install code {
    font-size: 12.5px;
    padding: 12px;
  }

  .install button {
    min-width: 74px;
    padding: 0 12px;
  }

  .section,
  .strip {
    padding-left: 18px;
    padding-right: 18px;
  }

  .section {
    padding-top: 44px;
  }

  .shot {
    margin-top: 34px;
  }

  .steps li {
    padding: 16px 16px;
    gap: 14px;
  }

  .footer {
    padding-left: 18px;
    padding-right: 18px;
  }
}

/* Belt and braces: no element may create a horizontal scrollbar. */
body {
  overflow-x: hidden;
}

img,
pre,
table {
  max-width: 100%;
}

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

.demo {
  margin: 0 0 34px;
}

.demo img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

/* The logo replaces the old gradient square, so drop the square's styling. */
img.brand-mark {
  background: none;
  border-radius: 7px;
}