/* Devopper landing page. Hand-written CSS, no build step.
   Tokens on :root, dark mode by media query, one accent (deep-sea blue, with a coral spark in the logo),
   red reserved for non-zero exit codes. */

:root {
  color-scheme: light dark;
  --bg: #F5FAFE;
  --surface: #FFFFFF;
  --surface-2: #E8F2FA;
  --ink: #082F49;
  --ink-2: #44607A;
  --line: #D3E3F0;
  --line-strong: #A9C4DA;
  --accent: #0369A1;
  --accent-hover: #075985;
  --accent-ink: #FFFFFF;
  --accent-soft: #D9EEFB;
  --fail: #B3261E;
  --fail-soft: #FBE4E1;
  --font-sans: "Bricolage Grotesque", system-ui, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace;
  --gutter: 16px;
  --indent: 16px;
  --radius: 6px;
  --radius-lg: 12px;
  --measure: 60ch;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #061A2B;
    --surface: #0A2438;
    --surface-2: #0F3049;
    --ink: #E6F1F9;
    --ink-2: #9DB6C9;
    --line: #17415C;
    --line-strong: #2A5F82;
    --accent: #38BDF8;
    --accent-hover: #7DD3FC;
    --accent-ink: #04263A;
    --accent-soft: #0E3A55;
    --fail: #F2857A;
    --fail-soft: #3C1C19;
  }
}

@media (min-width: 720px) {
  :root {
    --gutter: 32px;
    --indent: 28px;
  }
}

/* Base */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.55;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-weight: 500; margin: 0; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip {
  position: absolute;
  top: -100px;
  left: var(--gutter);
  z-index: 20;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--radius);
  text-decoration: none;
}
.skip:focus { top: 12px; }

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.15s, border-color 0.15s;
}
.btn-lg {
  min-height: 48px;
  padding: 0 22px;
  font-size: 1.0625rem;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn-ghost:hover { background: var(--surface-2); }

/* Top bar */

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.top-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 28px;
  min-height: 64px;
  padding-block: 10px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  text-transform: lowercase;
  text-decoration: none;
  margin-right: auto;
}
.menu-btn {
  display: none;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 28px;
}
.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  list-style: none;
}
.nav-list a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
}
.nav-list a:hover { color: var(--ink); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav-signin {
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink);
}
.nav-signin:hover { text-decoration: underline; }

@media (max-width: 879px) {
  .has-js .menu-btn { display: inline-flex; align-items: center; }
  .has-js .site-nav { display: none; }
  .has-js .top.is-open .site-nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    flex-basis: 100%;
    gap: 4px;
    padding: 8px 0 14px;
    border-top: 1px solid var(--line);
  }
  .has-js .top.is-open .nav-list { flex-direction: column; gap: 0; }
  .has-js .top.is-open .nav-list a { display: block; padding: 10px 0; font-size: 1.0625rem; }
  .has-js .top.is-open .nav-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--line);
  }
  .has-js .top.is-open .nav-signin { padding: 6px 0; }
  .site-nav { flex-basis: 100%; }
}

/* Hero */

.hero { padding: clamp(56px, 10vw, 128px) 0 clamp(48px, 8vw, 96px); }
.hero h1 {
  max-width: 14ch;
  font-size: clamp(2.625rem, 5.5vw + 1rem, 5.25rem);
  line-height: 1.02;
  letter-spacing: -0.028em;
  text-wrap: balance;
  margin-bottom: 28px;
}
.lede {
  max-width: var(--measure);
  font-size: clamp(1.125rem, 0.8vw + 0.95rem, 1.375rem);
  line-height: 1.5;
  color: var(--ink-2);
  margin-bottom: 36px;
}
.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-note {
  margin-top: 22px;
  max-width: var(--measure);
  font-size: 0.9375rem;
  color: var(--ink-2);
}

/* Sections */

.section {
  padding: clamp(56px, 8vw, 104px) 0;
  border-top: 1px solid var(--line);
}
.section-head {
  max-width: var(--measure);
  margin-bottom: clamp(28px, 4vw, 48px);
}
.section-head h2 {
  font-size: clamp(1.875rem, 2.2vw + 1rem, 2.625rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin-bottom: 14px;
}
.section-head p { color: var(--ink-2); }

/* Operations log mock */

.log {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
}
.log-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--surface-2);
  color: var(--ink-2);
  font-size: 0.8125rem;
}
.tree {
  list-style: none;
  border: 1px solid var(--line);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
}
.tree ul {
  position: relative;
  list-style: none;
  padding-left: var(--indent);
}
.tree ul::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 16px;
  border-left: 1px solid var(--line-strong);
}
.row {
  padding: 14px 16px;
  border-top: 1px solid var(--line);
}
.tree > li > .row { border-top: 0; }
.row-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
}
.kind {
  min-width: 3.5em;
  font-size: 0.75rem;
  color: var(--ink-2);
}
.title {
  flex: 1 1 14em;
  min-width: 0;
  color: var(--ink);
  font-weight: 500;
  overflow-wrap: anywhere;
}
.meta {
  font-size: 0.75rem;
  color: var(--ink-2);
}
.exit {
  margin-left: auto;
  padding: 1px 9px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}
.exit-ok { background: var(--accent-soft); color: var(--accent); }
.exit-fail { background: var(--fail-soft); color: var(--fail); }
.cmd {
  margin-top: 8px;
  color: var(--ink);
  overflow-wrap: anywhere;
}
.ps { color: var(--ink-2); margin-right: 0.25em; }
.out {
  margin: 6px 0 0;
  padding-left: 10px;
  border-left: 2px solid var(--line-strong);
  font: inherit;
  font-size: 0.8125rem;
  color: var(--ink-2);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.is-fail .out { border-left-color: var(--fail); }
@media (min-width: 600px) {
  .cmd, .out { margin-left: calc(3.5em + 12px); }
}
.log figcaption {
  margin-top: 14px;
  max-width: var(--measure);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--ink-2);
}

/* Features: one hairline grid, not eight boxes */

.features {
  display: grid;
  gap: 1px;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.feature {
  padding: 24px 22px 26px;
  background: var(--surface);
}
.feature h3 {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.feature p {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--ink-2);
}
@media (min-width: 640px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1024px) { .features { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

/* How it works: a real sequence, so it is numbered */

.steps {
  counter-reset: step;
  list-style: none;
  display: grid;
  gap: 32px;
}
.steps li {
  counter-increment: step;
  padding-top: 18px;
  border-top: 1px solid var(--line-strong);
}
.steps li::before {
  content: counter(step);
  display: block;
  margin-bottom: 14px;
  font-size: 1.5rem;
  line-height: 1;
  font-weight: 400;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.steps h3 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.steps p {
  color: var(--ink-2);
  font-size: 1rem;
  max-width: 44ch;
}
@media (min-width: 880px) {
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
}

/* Deployment models */

.models {
  display: grid;
  gap: 16px;
  list-style: none;
}
.model {
  padding: 24px 22px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}
.model.is-available { border-color: var(--accent); }
.model-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  margin-bottom: 12px;
}
.model h3 {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}
.status {
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--ink-2);
  font-size: 0.8125rem;
  font-weight: 500;
  white-space: nowrap;
}
.status-now { background: var(--accent-soft); color: var(--accent); }
.model p {
  color: var(--ink-2);
  font-size: 1rem;
}
@media (min-width: 880px) {
  .models { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
}

/* Who it is for */

.who {
  display: grid;
  gap: 24px 40px;
  margin: 0 0 clamp(36px, 5vw, 56px);
}
.who dt {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}
.who dd {
  margin: 0;
  color: var(--ink-2);
  max-width: 44ch;
}
@media (min-width: 640px) { .who { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* Footer */

.foot {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  font-size: 0.9375rem;
  color: var(--ink-2);
}
.foot-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}
.foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  list-style: none;
}
.foot-links a { color: var(--ink); text-decoration: none; }
.foot-links a:hover { text-decoration: underline; }

.wordmark svg { width: 32px; height: 32px; flex: none; }

/* The 60-second introduction in the first screen */
.hero-video { margin: 44px 0 0; max-width: 1040px; }
.hero-video video { display: block; width: 100%; aspect-ratio: 16 / 9; background: #061A2B; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); }
.hero-video figcaption { margin-top: 10px; font-size: 0.9375rem; color: var(--ink-2); }
.transcript { margin-top: 8px; max-width: var(--measure); font-size: 0.9375rem; color: var(--ink-2); }
.transcript summary { cursor: pointer; color: var(--accent); }
.transcript p { margin-top: 8px; line-height: 1.55; }