/* Automaton landing page. Hand-authored, no build step.
   Type: Zodiak (display) + Author (body) via Fontshare CDN, system mono for code.
   Themes: chalk paper / ink dark, cobalt accent. */

:root {
  --paper: #f7f7f4;
  --ink: #14161f;
  --ink-soft: #4c5060;
  --line: #d9dad2;
  --cobalt: #2743d0;
  --cobalt-ink: #1f36a8;
  --card: #ffffff;
  --code-bg: #eceded;
  --chart-hi: #2743d0;
  --chart-lo: #6274c9;
  --stamp: #b3223b;
}

[data-theme="dark"] {
  --paper: #0d1020;
  --ink: #e9eaf2;
  --ink-soft: #a3a8bd;
  --line: #23283d;
  --cobalt: #8aa0ff;
  --cobalt-ink: #a9b8ff;
  --card: #141830;
  --code-bg: #171b33;
  --chart-hi: #6e85f2;
  --chart-lo: #515fb0;
  --stamp: #e06a80;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0d1020;
    --ink: #e9eaf2;
    --ink-soft: #a3a8bd;
    --line: #23283d;
    --cobalt: #8aa0ff;
    --cobalt-ink: #a9b8ff;
    --card: #141830;
    --code-bg: #171b33;
    --chart-hi: #6e85f2;
    --chart-lo: #515fb0;
    --stamp: #e06a80;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Author", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--cobalt); color: var(--paper); }

code, pre, .mono {
  font-family: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, monospace;
}

a { color: var(--cobalt-ink); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--cobalt); }

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

/* ---------- frame ---------- */

.wrap {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 1.5rem 0;
}

.wordmark {
  font-family: "Zodiak", Georgia, "Times New Roman", serif;
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}

.toggle {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.85rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  cursor: pointer;
}
.toggle:hover { border-color: var(--cobalt); color: var(--cobalt-ink); }

/* ---------- rail + sections grid ---------- */

.run {
  display: grid;
  grid-template-columns: 11.5rem minmax(0, 1fr);
  gap: 2.5rem;
}

.rail {
  position: sticky;
  top: 1.5rem;
  align-self: start;
  height: min-content;
  padding: 1.25rem 0;
  border-left: 2px solid var(--line);
}

.rail ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.rail li {
  position: relative;
  padding: 0.45rem 0 0.45rem 1.15rem;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.rail li::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 50%;
  width: 8px;
  height: 8px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: var(--line);
  border: 2px solid var(--paper);
}

.rail li.active { color: var(--cobalt-ink); }
.rail li.active::before { background: var(--cobalt); }

.rail .rail-note {
  margin-top: 1rem;
  padding-left: 1.15rem;
  font-size: 0.75rem;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink-soft);
}

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

section { padding: 4.5rem 0 1rem; }

.eyebrow {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 1rem;
}

.eyebrow .num {
  font-family: "Zodiak", Georgia, serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--cobalt-ink);
  letter-spacing: 0;
}

h1, h2 {
  font-family: "Zodiak", Georgia, "Times New Roman", serif;
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.04;
  margin: 0 0 1.25rem;
  text-wrap: balance;
}

h1 { font-size: clamp(2.3rem, 4.6vw, 3.7rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.12; }

.lede {
  font-size: 1.2rem;
  max-width: 34em;
  color: var(--ink);
}

p { max-width: 38em; }
.muted { color: var(--ink-soft); }

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

.hero { padding-top: 3.5rem; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 3rem;
  align-items: center;
}

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
}

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

.term {
  background: #0b0e1a;
  border: 1px solid #23283d;
  border-radius: 10px;
  box-shadow: 0 18px 48px -24px rgba(13, 16, 32, 0.55);
  overflow: hidden;
}

.term-bar {
  display: flex;
  gap: 6px;
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid #1a1f36;
}

.term-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #2a3050;
}

.term-body {
  margin: 0;
  padding: 1rem 1.1rem 1.2rem;
  font-size: 0.74rem;
  line-height: 1.9;
  color: #c4c9de;
  overflow-x: auto;
}

.term-body .tl { display: block; opacity: 0; animation: tline 0.35s ease-out forwards; }
.term-body .tl:nth-child(1)  { animation-delay: 0.4s; }
.term-body .tl:nth-child(2)  { animation-delay: 1.0s; }
.term-body .tl:nth-child(3)  { animation-delay: 1.7s; }
.term-body .tl:nth-child(4)  { animation-delay: 2.3s; }
.term-body .tl:nth-child(5)  { animation-delay: 2.9s; }
.term-body .tl:nth-child(6)  { animation-delay: 3.3s; }
.term-body .tl:nth-child(7)  { animation-delay: 4.0s; }
.term-body .tl:nth-child(8)  { animation-delay: 4.8s; }
.term-body .tl:nth-child(9)  { animation-delay: 5.4s; }
.term-body .tl:nth-child(10) { animation-delay: 6.0s; }
.term-body .tl:nth-child(11) { animation-delay: 6.6s; }

@keyframes tline { to { opacity: 1; } }

.term .tp { color: #8aa0ff; font-weight: 400; }
.term .ts {
  display: inline-block;
  width: 5.4em;
  color: #8aa0ff;
}
.term .td { color: #676e8f; font-style: italic; }

/* ---------- lifecycle flow ---------- */

.flow-box { margin-top: 2.25rem; overflow-x: auto; }
.flow-box svg { display: block; min-width: 760px; width: 100%; height: auto; }
.flow-box .f-track { stroke: var(--line); stroke-width: 2; }
.flow-box .f-arrow { fill: var(--line); }
.flow-box .f-node circle { fill: var(--cobalt); }
.flow-box .f-node .f-final { fill: none; stroke: var(--cobalt); stroke-width: 2; }
.flow-box .f-drop { stroke: var(--line); stroke-width: 1.5; stroke-dasharray: 2 3; }
.flow-box .f-chip { fill: var(--card); stroke: var(--line); }
.flow-box .f-stage {
  font-family: "Author", system-ui, sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  fill: var(--cobalt-ink);
}
.flow-box .f-doc { font-family: ui-monospace, Menlo, monospace; font-size: 11.5px; fill: var(--ink-soft); }
.flow-box .f-gate { stroke: var(--stamp); stroke-width: 2.5; }
.flow-box .f-gatelabel {
  font-family: "Author", system-ui, sans-serif;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  fill: var(--stamp);
}

.hero .bet {
  font-family: "Zodiak", Georgia, serif;
  font-style: italic;
  font-weight: 400;
  font-size: 1.05rem;
  color: var(--ink-soft);
  margin-top: 2rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-top: 1.75rem;
}

.linkrow { display: flex; gap: 1.5rem; font-size: 0.95rem; }

/* ---------- code blocks ---------- */

.cmd {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 0.75rem;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.7rem 0.9rem;
  font-size: 0.95rem;
  max-width: 100%;
}

.cmd code { white-space: nowrap; overflow-x: auto; flex: 1; }

.copy {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 0.78rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  flex: none;
}
.copy:hover { border-color: var(--cobalt); color: var(--cobalt-ink); }

.model-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 2rem;
  margin-top: 1.5rem;
}
.model-cols h3 {
  font-family: "Author", system-ui, sans-serif;
  font-weight: 600;
  font-size: 1rem;
  margin: 0 0 0.4rem;
}
.model-cols p { font-size: 0.97rem; margin: 0; color: var(--ink-soft); }

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

.papers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.paper {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.4rem 1.5rem;
  box-shadow: 0 1px 0 var(--line);
}

.paper .doc {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cobalt-ink);
  margin-bottom: 0.8rem;
}

.paper blockquote {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink);
}

.paper .field { margin: 0 0 0.65rem; }
.paper .field b { font-weight: 600; }
.paper ul { margin: 0; padding-left: 1.1rem; font-size: 0.92rem; }
.paper li { margin-bottom: 0.35rem; }
.paper .src {
  display: block;
  margin-top: 1rem;
  font-size: 0.78rem;
  color: var(--ink-soft);
}

/* ---------- chart ---------- */

.chart-box { margin-top: 2rem; overflow-x: auto; }
.chart-box svg { display: block; min-width: 560px; width: 100%; height: auto; }
.chart-box .bar-name { font-size: 13px; fill: var(--ink-soft); font-family: "Author", system-ui, sans-serif; }
.chart-box .bar-name.hi { fill: var(--ink); font-weight: 600; }
.chart-box .bar-val { font-size: 13px; fill: var(--ink); font-family: ui-monospace, Menlo, monospace; }
.chart-box .axis-note { font-size: 12px; fill: var(--ink-soft); font-family: "Author", system-ui, sans-serif; }
.chart-box .bar { fill: var(--chart-lo); }
.chart-box .bar.hi { fill: var(--chart-hi); }

.caption {
  font-size: 0.85rem;
  color: var(--ink-soft);
  max-width: 40em;
  margin-top: 0.75rem;
}

/* ---------- install ---------- */

.installs { display: grid; gap: 0.75rem; margin: 1.75rem 0; max-width: 40rem; }

footer {
  margin-top: 4rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

/* ---------- motion & responsive ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
  .term-body .tl { opacity: 1; }
}

@media (max-width: 860px) {
  .run { grid-template-columns: minmax(0, 1fr); }
  .rail { display: none; }
  section { padding-top: 3.25rem; }
}