/* lander.css · scroll rig + overlay choreography (Agent B)
   Default styles = the static readable page (no JS, reduced motion,
   missing libs). body.ln-motion = the scroll-driven overlay rig.
   body.ln-static is set explicitly by lander.js on the gated path and
   is covered by the body:not(.ln-motion) selectors below. */

/* ---------- lenis (recommended base) ---------- */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }

body { overflow-x: clip; }

/* ---------- canvas ---------- */
#ln-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  display: none;
}
body.ln-motion #ln-canvas { display: block; }

/* ---------- mast ---------- */
.ln-mast {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: color-mix(in srgb, var(--ink0) 86%, transparent);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.ln-mast .brand { display: flex; align-items: center; gap: 10px; }
.ln-mast .wordmark {
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: .22em;
  color: var(--cream);
  text-decoration: none;
}
.ln-mast nav { display: flex; align-items: center; gap: 18px; }
.ln-mast nav a {
  font-family: var(--mono);
  font-size: 12px;
  text-decoration: none;
  color: var(--cream2);
}
.ln-mast nav a:hover { color: var(--cream); }
.ln-mast .cta {
  border: 1px solid var(--green-dim);
  color: var(--green);
  padding: 6px 12px;
  border-radius: 2px;
}
.ln-mast .cta:hover { background: var(--green); color: var(--ink0); }

/* ---------- track + steps · static flow (default) ---------- */
.ln-track { position: relative; }
.ln-step {
  position: relative;
  max-width: 568px;              /* 520px content + side padding */
  margin: 0 auto;
  padding: 72px 24px;
}
.ln-step h2 {
  font-family: var(--serif);
  font-size: clamp(34px, 5vw, 60px);
  font-weight: 600;
  letter-spacing: -.025em;
  line-height: 1.08;
  color: var(--cream);
}
.ln-line {
  margin-top: 18px;
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--cream2);
  max-width: 46ch;
}
.ln-line.ln-mono {
  font-family: var(--mono);
  font-size: 14px;
  min-height: 1.6em;
  color: var(--cream);
}
.ln-now { color: var(--green); }
.ln-line.ln-receipts {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--cream3);
}

/* ---------- scroll cue ---------- */
.ln-cue {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cream3);
  margin-top: 48px;
  animation: ln-cue 2.4s ease-in-out infinite;
}
@keyframes ln-cue {
  0%, 100% { transform: translateY(0); opacity: .55; }
  50%      { transform: translateY(6px); opacity: 1; }
}

/* ---------- interactives ---------- */
.ln-replay {
  margin-top: 22px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cream2);
  background: none;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 7px 14px;
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
.ln-replay:hover { color: var(--green); border-color: var(--green-dim); }

.ln-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
}
.ln-chip {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--cream2);
  background: none;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 7px 12px;
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
.ln-chip:hover { color: var(--cream); border-color: var(--cream3); }
.ln-chip[aria-pressed="true"] { color: var(--green); border-color: var(--green-dim); }
.ln-count {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--cream2);
  margin-left: 6px;
  min-height: 1em;
}

/* ---------- close beat ---------- */
.ln-cmdrow {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  background: var(--ink1);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 14px 16px;
}
.ln-cmd {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--cream);
  overflow-wrap: anywhere;
  user-select: all;
  -webkit-user-select: all;
  flex: 1 1 260px;
  min-width: 0;
}
.ln-copy {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cream2);
  background: none;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 7px 14px;
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
.ln-copy:hover { color: var(--cream); border-color: var(--cream3); }
.ln-copy.is-ok { color: var(--green); border-color: var(--green); }
.ln-cmdrow .chip { flex: none; }

.ln-key {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  background: var(--ink1);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 14px 16px;
}
.ln-key-input {
  flex: 1 1 200px;
  min-width: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--cream);
  background: var(--ink0);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 9px 12px;
  outline: none;
}
.ln-key-input::placeholder { color: var(--cream3); }
.ln-key-input:focus { border-color: var(--green-dim); }
.ln-key-btn {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--green);
  background: none;
  border: 1px solid var(--green-dim);
  border-radius: 2px;
  padding: 9px 14px;
  cursor: pointer;
  transition: background-color .2s, color .2s;
}
.ln-key-btn:hover { background: var(--green); color: var(--ink0); }
.ln-key-btn:disabled {
  color: var(--cream3);
  border-color: var(--rule);
  background: none;
  cursor: default;
}
.ln-key .chip { flex: none; }

.ln-links {
  margin-top: 20px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 2;
  color: var(--cream2);
}
.ln-links a { color: var(--cream2); }
.ln-links a:hover { color: var(--cream); }

/* ---------- progress rail ---------- */
.ln-rail {
  position: fixed;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  display: none;
  flex-direction: column;
  gap: 6px;
  transition: opacity .35s ease;
}
body.ln-motion .ln-rail { display: flex; }
body.ln-motion.ln-past .ln-rail { opacity: 0; pointer-events: none; }
.ln-dot {
  width: 22px;
  height: 18px;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.ln-dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cream3);
  opacity: .45;
  transition: opacity .2s, background-color .2s, transform .2s;
}
.ln-dot:hover::before { opacity: .9; }
.ln-dot.is-lit::before { background: var(--green); opacity: 1; transform: scale(1.25); }

/* ---------- tail sections + footer · normal flow over the canvas ---------- */
.ln-track ~ section,
.ln-footer {
  position: relative;
  z-index: 20;
  background: var(--ink0);
}
.ln-footer {
  border-top: 1px solid var(--rule);
  padding: 40px 24px 64px;
}
.ln-footer .inner { max-width: var(--w); margin: 0 auto; }
.ln-footer .colophon {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--cream3);
  line-height: 1.8;
}
.ln-footer .colophon a { color: var(--cream2); }

/* ---------- motion mode · fixed overlay steps ---------- */
body.ln-motion .ln-track { height: 1000vh; }
body.ln-motion .ln-step {
  position: fixed;
  inset: 0;
  margin: 0;
  max-width: none;
  z-index: 10;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 0 48px 0 clamp(24px, 8vw, 120px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  will-change: opacity, transform;
}
body.ln-motion .ln-step > * { width: 100%; max-width: 520px; }
body.ln-motion .ln-replay { width: auto; }
body.ln-motion .ln-step.is-on > * { pointer-events: auto; }
body.ln-motion .ln-step .ln-cue { pointer-events: none; }

/* ---------- static / no-JS: hide dead controls, keep it readable ---------- */
body:not(.ln-motion) .ln-cue,
body:not(.ln-motion) .ln-replay,
body:not(.ln-motion) .ln-chips,
body:not(.ln-motion) .ln-copy,
body:not(.ln-motion) .ln-key,
body:not(.ln-motion) .ln-rail { display: none; }
body:not(.ln-motion) .ln-type::before { content: attr(data-type); }

/* ---------- breakpoints ---------- */
@media (max-width: 900px) {
  body.ln-motion .ln-step {
    padding: 0 24px;
    align-items: center;
  }
  body.ln-motion .ln-step > * { margin-inline: auto; }
  body.ln-motion .ln-replay { align-self: center; }
}
@media (max-width: 640px) {
  .ln-mast nav a.hide-m { display: none; }
  .ln-mast .brand .chip { display: none; }
  .ln-rail { right: 5px; }
  .ln-step { padding: 56px 20px; }
  body.ln-motion .ln-step { padding: 0 34px 0 20px; }
  .ln-line { font-size: 15.5px; }
  .ln-cmdrow, .ln-key { padding: 12px 14px; }
}

/* Emmett round: review fixes */
body.ln-motion.ln-past .ln-step{opacity:0 !important;visibility:hidden}
.ln-line.ln-mono.ln-now{color:var(--green)}
.ln-cmd,.ag-cmd,.ag-code{font-variant-ligatures:none;font-feature-settings:"calt" 0}
.ln-line.ln-receipts{color:var(--cream2)}

/* ---------- copy-safe scrim: rides each step, fades with it ---------- */
body.ln-motion .ln-step::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(90deg,
    rgba(12, 11, 9, .88) 0%,
    rgba(12, 11, 9, .60) 34%,
    rgba(12, 11, 9, 0) 62%);
}
@media (max-width: 900px) {
  body.ln-motion .ln-step::before {
    background: linear-gradient(180deg,
      rgba(12, 11, 9, 0) 4%,
      rgba(12, 11, 9, .70) 26%,
      rgba(12, 11, 9, .70) 58%,
      rgba(12, 11, 9, 0) 80%);
  }
}

/* ---------- B7 · happy path stepper ---------- */
.ln-path {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  max-width: 520px;
}
.ln-call {
  border-left: 1px solid var(--rule);
  padding: 7px 0 7px 16px;
}
.ln-call code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--cream3);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ln-call p {
  margin: 3px 0 0;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--cream3);
  display: none;
}
body.ln-motion .ln-call { opacity: .32; }
body.ln-motion .ln-call.is-run { opacity: 1; }
body.ln-motion .ln-call.is-run code { color: var(--cream); }
body.ln-motion .ln-call.is-run p { display: block; color: var(--cream2); }
body.ln-motion .ln-call.is-hot { border-left-color: var(--green); }
body.ln-motion .ln-call.is-hot code { color: var(--green); }
.ln-path-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
}
.ln-next {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ink0);
  background: var(--green);
  border: none;
  border-radius: 3px;
  padding: 8px 14px;
  cursor: pointer;
}
.ln-next:hover { background: var(--cream); }
.ln-next:disabled { background: none; color: var(--green); border: 1px solid var(--green-dim); cursor: default; }
body:not(.ln-motion) .ln-next { display: none; }
body:not(.ln-motion) .ln-call p { display: block; }
body:not(.ln-motion) .ln-call code { color: var(--cream); white-space: normal; }
@media (max-width: 640px) {
  .ln-call code { font-size: 11.5px; }
  .ln-call p { font-size: 12.5px; }
}

/* ---------- round-4 type calls (Emmett): display scale + voice law ---------- */
.ln-step h2 {
  font-size: clamp(34px, 5vw, 52px);
  letter-spacing: -.03em;
}
@media (max-width: 600px) {
  .ln-step h2 { line-height: 1.14; letter-spacing: -.015em; }
}
/* human prose leaves the machine voice */
.ln-line.ln-receipts {
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.6;
}
.ln-links, .ln-footer .colophon { font-family: var(--sans); }
.ln-key-btn { font-family: var(--sans); letter-spacing: 0; }
/* stepper lines wrap on phones instead of ellipsing the proof */
@media (max-width: 640px) {
  .ln-call code {
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    font-size: 11px;
    line-height: 1.5;
  }
}

/* ---------- round-5 · segment, before/after, use-case tabs ---------- */
.ln-seg {
  font-size: 13.5px;
  color: var(--cream3);
  margin-top: 12px;
}
.ln-ba {
  margin-top: 20px;
  max-width: 520px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}
.ln-ba p {
  margin: 0;
  padding: 10px 14px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--cream2);
}
.ln-ba p + p { border-top: 1px solid var(--rule); }
.ln-ba span {
  display: inline-block;
  min-width: 118px;
  margin-right: 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .08em;
  color: var(--cream3);
}
.ln-ba-new span { color: var(--green); }
.ln-ba-new { color: var(--cream); }

.ln-uc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.ln-uc-tab {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--cream2);
  background: none;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 7px 12px;
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
.ln-uc-tab:hover { color: var(--cream); border-color: var(--cream3); }
.ln-uc-tab[aria-selected="true"] { color: var(--green); border-color: var(--green-dim); }
.ln-uc-name { color: inherit; }

/* ---------- round-5 · substantial footer ---------- */
.ln-footer .inner { max-width: 1080px; }
.ln-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  padding: 40px 0 28px;
  border-bottom: 1px solid var(--rule);
  text-align: left;
}
.ln-col h3 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cream3);
  margin: 0 0 12px;
  font-weight: 500;
}
.ln-col ul { list-style: none; margin: 0; padding: 0; }
.ln-col li { margin: 0 0 9px; font-size: 13px; line-height: 1.5; }
.ln-col a { color: var(--cream2); text-decoration: none; }
.ln-col a:hover { color: var(--cream); }
.ln-col .muted { color: var(--cream3); }
.ln-col .chip { margin-left: 6px; }
.ln-lineage {
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 2;
  color: var(--cream3);
}
.ln-lineage b { color: var(--cream2); font-weight: 500; }
@media (max-width: 760px) {
  .ln-cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .ln-cols { grid-template-columns: 1fr; }
}

/* ---------- hero CTA pair: one for the human, one for the machine ---------- */
.ln-ctarow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 26px;
}
.ln-cta-h {
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--ink0);
  background: var(--green);
  border-radius: 3px;
  padding: 11px 18px;
  text-decoration: none;
  transition: background-color .2s;
}
.ln-cta-h:hover { background: var(--cream); }
.ln-cta-m {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--cream);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 10px 14px;
  text-decoration: none;
  transition: border-color .2s;
}
.ln-cta-m:hover { border-color: var(--green-dim); }
.ln-cta-m span { color: var(--cream3); }