/* =====================================================================
   flowforge — flat / paper editorial theme
   Monochrome ink-on-paper, hairline rules, square corners.
   Modeled after the codegraph landing page aesthetic.
   ===================================================================== */

:root {
  --ff-paper: #f7f6f2;
  --ff-paper-press: #ecebe3;
  --ff-ink: #16150f;
  --ff-ink-2: #56544a;
  --ff-rule: #cdcabf;
  --ff-font: "Archivo", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --ff-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { background: var(--ff-paper); scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--ff-font);
  color: var(--ff-ink);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.frame {
  max-width: 1440px;
  margin: 0 auto;
  border: 1px solid var(--ff-rule);
}

/* ---- nav ---- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 2rem;
  border-bottom: 1px solid var(--ff-rule);
}
.wordmark {
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.035em;
  color: var(--ff-ink);
  text-decoration: none;
}
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a { color: var(--ff-ink); text-decoration: none; font-size: 0.98rem; }
.nav-links a:not(.star):hover { text-decoration: underline; text-underline-offset: 4px; }
.star {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--ff-rule);
  padding: 0.4rem 0.85rem;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.star:hover { background: var(--ff-paper-press); }
.star-glyph { font-size: 0.7em; }

/* ---- hero ---- */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  border-bottom: 1px solid var(--ff-rule);
}
.hero-left { padding: 4.5rem 3rem 4rem; min-width: 0; }
.hero-right {
  border-inline-start: 1px solid var(--ff-rule);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem;
  min-width: 0;
}
h1 {
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  line-height: 0.98;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin: 0 0 1.6rem;
  overflow-wrap: break-word;
}
.lede {
  font-size: 1.18rem;
  line-height: 1.5;
  color: var(--ff-ink-2);
  max-width: 42ch;
  margin: 0 0 2.2rem;
}
.cta { display: flex; gap: 0.9rem; margin-bottom: 1.6rem; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--ff-rule);
  transition: background 0.12s ease, color 0.12s ease;
}
.btn-primary { background: var(--ff-ink); color: var(--ff-paper); border-color: var(--ff-ink); }
.btn-primary:hover { background: transparent; color: var(--ff-ink); }
.btn-ghost { background: transparent; color: var(--ff-ink); }
.btn-ghost:hover { background: var(--ff-paper-press); }

.install {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--ff-rule);
  padding: 0.5rem 0.55rem 0.5rem 0.9rem;
  font-family: var(--ff-mono);
  font-size: 0.95rem;
  margin-bottom: 1.8rem;
}
.install code { font-family: inherit; background: none; color: var(--ff-ink); }
.copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0.3rem;
  color: var(--ff-ink-2);
}
.copy:hover { color: var(--ff-ink); }
.copy .copied { font-family: var(--ff-font); font-size: 0.8rem; padding: 0 0.2rem; }

.agents {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  color: var(--ff-ink-2);
  font-size: 0.92rem;
}
.agents > span:first-child { color: var(--ff-ink-2); }
.agent { color: var(--ff-ink); font-weight: 600; }
.sep { color: var(--ff-rule); }

/* ---- hero graph ---- */
.ff-graph { width: 100%; height: auto; max-width: 380px; min-width: 0; display: block; }
.ff-graph .edges line { stroke: var(--ff-ink); stroke-width: 1.25; }
.ff-graph .node rect {
  fill: var(--ff-paper);
  stroke: var(--ff-ink);
  stroke-width: 1.5;
  transition: fill 0.12s ease;
}
.ff-graph .node text {
  font-family: var(--ff-mono);
  font-size: 16px;
  fill: var(--ff-ink);
  dominant-baseline: middle;
}
.ff-graph .node:hover rect { fill: var(--ff-paper-press); }
.ff-graph .node.gate rect { stroke-dasharray: 4 3; }
.ff-graph .node.ship rect { fill: var(--ff-ink); }
.ff-graph .node.ship text { fill: var(--ff-paper); }

/* ---- features ---- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--ff-rule); }
.feature {
  display: grid;
  grid-template-columns: auto 1px 1fr;
  column-gap: 1.5rem;
  align-items: center;
  padding: 2.6rem 2rem;
  position: relative;
}
.feature + .feature { border-inline-start: 1px solid var(--ff-rule); }
.feature::before {
  content: "";
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: stretch;
  width: 1px;
  background: var(--ff-rule);
}
.ficon { grid-column: 1; grid-row: 1 / 3; align-self: center; width: 60px; height: 60px; color: var(--ff-ink); }
.feature h2 { grid-column: 3; grid-row: 1; font-size: 1.25rem; font-weight: 700; margin: 0 0 0.5rem; }
.feature p { grid-column: 3; grid-row: 2; font-size: 0.98rem; line-height: 1.55; color: var(--ff-ink-2); margin: 0; max-width: 34ch; }

/* ---- bands ---- */
.band { border-bottom: 1px solid var(--ff-rule); }
.band-alt { background: var(--ff-paper-press); }
.band-inner { padding: 3.4rem 3rem; }
.band-center { text-align: center; display: flex; flex-direction: column; align-items: center; }
.band-title { font-size: 1.6rem; font-weight: 800; letter-spacing: -0.03em; margin: 0 0 1.8rem; }
.band-lede { color: var(--ff-ink-2); font-size: 1.1rem; margin: 0 0 1.8rem; max-width: 48ch; }

/* steps list */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--ff-rule);
  border-left: 1px solid var(--ff-rule);
}
.steps li {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.4rem 1.6rem;
  border-right: 1px solid var(--ff-rule);
  border-bottom: 1px solid var(--ff-rule);
}
.step-k {
  font-family: var(--ff-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  color: var(--ff-ink);
}
.step-v { font-size: 0.98rem; line-height: 1.5; color: var(--ff-ink-2); }

/* demo video */
.video {
  position: relative;
  display: block;
  width: 100%;
  max-width: 620px;
  border: 1px solid var(--ff-rule);
  overflow: hidden;
  background: var(--ff-ink);
}
.video img { width: 100%; display: block; filter: grayscale(0.15) brightness(0.92); transition: filter 0.15s ease; }
.video:hover img { filter: none; }
.play {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ff-paper);
  background: rgba(22, 21, 15, 0.7);
  color: var(--ff-paper);
  font-size: 22px;
}

/* get started */
.starts { display: grid; gap: 0; border-top: 1px solid var(--ff-rule); border-left: 1px solid var(--ff-rule); max-width: 760px; }
.start-row {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1rem 1.4rem;
  border-right: 1px solid var(--ff-rule);
  border-bottom: 1px solid var(--ff-rule);
}
.start-n {
  flex: none;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ff-rule);
  font-family: var(--ff-mono);
  font-weight: 600;
  font-size: 0.9rem;
}
.start-cmd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex: 1;
  font-family: var(--ff-mono);
  font-size: 0.95rem;
}
.start-cmd code { font-family: inherit; color: var(--ff-ink); background: none; }
.band-note { margin: 1.6rem 0 0; color: var(--ff-ink-2); font-size: 0.92rem; }
.band-note code { font-family: var(--ff-mono); font-size: 0.85rem; color: var(--ff-ink); }

/* ---- footer ---- */
.foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 2rem;
}
.foot-mark { font-weight: 800; letter-spacing: -0.03em; }
.foot-links { display: flex; gap: 1.6rem; flex-wrap: wrap; }
.foot-links a { color: var(--ff-ink-2); text-decoration: none; font-size: 0.92rem; }
.foot-links a:hover { color: var(--ff-ink); text-decoration: underline; text-underline-offset: 3px; }

/* ---- restrained entrance ---- */
@media (prefers-reduced-motion: no-preference) {
  .hero-left > * { opacity: 0; transform: translateY(8px); animation: ff-in 0.5s ease forwards; }
  .hero-left > *:nth-child(1) { animation-delay: 0.04s; }
  .hero-left > *:nth-child(2) { animation-delay: 0.1s; }
  .hero-left > *:nth-child(3) { animation-delay: 0.16s; }
  .hero-left > *:nth-child(4) { animation-delay: 0.22s; }
  .hero-left > *:nth-child(5) { animation-delay: 0.28s; }
  @keyframes ff-in { to { opacity: 1; transform: none; } }
}

/* ---- responsive ---- */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .hero-right { border-inline-start: none; border-top: 1px solid var(--ff-rule); }
  .features { grid-template-columns: 1fr; }
  .feature + .feature { border-inline-start: none; border-top: 1px solid var(--ff-rule); }
  .feature { column-gap: 1rem; padding: 2rem 1.25rem; }
  .ficon { width: 48px; height: 48px; }
  .steps { grid-template-columns: 1fr; }
  .nav { padding: 1rem 1.25rem; }
  .nav-links { gap: 0.95rem; font-size: 0.9rem; }
  .nav-links .opt { display: none; }
  .star { display: none; }
  .hero-left { padding: 2.75rem 1.25rem 2.5rem; }
  .band-inner { padding: 2.4rem 1.25rem; }
  .foot { flex-direction: column; gap: 1rem; align-items: flex-start; }
}