/* ===========================================================================
   Good Enough Agents — /spec/ variant
   Aesthetic: instrument panel. Dark ground, amber signal, monospace data.
   Type: IBM Plex Sans (text) · JetBrains Mono (labels, data, structure).
   Independent of main.css — the two versions never share a rule.
   =========================================================================== */

:root {
  --void: #0A0C10;
  --panel: #11141B;
  --panel-2: #161A23;
  --line: #232936;
  --line-lit: #333B4D;

  --text: #E4E8F0;
  --text-2: #949CAD;
  --faint: #616A7D;

  --amber: #FFB224;
  --amber-ink: #FFC759;
  --amber-tint: rgba(255, 178, 36, 0.10);
  --cyan: #56C7E8;
  --ok: #3FB950;
  --bad: #F0616D;

  --wrap: 78rem;
  --pad: clamp(1.25rem, 4vw, 3rem);

  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--void);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0125rem;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--amber); color: var(--void); }
a { color: inherit; }
a:focus-visible, .btn:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 3px; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }

/* ── Type ────────────────────────────────────────────────────────────── */
.kick {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.kick::before {
  content: "";
  width: 1.6rem;
  height: 1px;
  background: var(--amber);
  flex: none;
}

.h1 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(2.3rem, 5.4vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin: 0;
}
.h1 span { color: var(--amber); display: block; }

.h2 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin: 0;
}

.lede { font-size: clamp(1.05rem, 1.5vw, 1.2rem); color: var(--text-2); margin: 1.5rem 0 0; max-width: 60ch; }
.sec-lede { font-size: 1.08rem; color: var(--text-2); margin: 1.3rem 0 0; max-width: 68ch; }

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
  font-family: var(--mono);
  font-size: 0.84rem;
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.3rem;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn--sm { padding: 0.5rem 0.85rem; font-size: 0.75rem; }
.btn--lg { padding: 1rem 1.6rem; font-size: 0.9rem; }
.btn--amber { background: var(--amber); color: var(--void); font-weight: 700; }
.btn--amber:hover { background: var(--amber-ink); }
.btn--wire { border-color: var(--line-lit); color: var(--text); }
.btn--wire:hover { border-color: var(--amber); color: var(--amber); }

/* ── Header ──────────────────────────────────────────────────────────── */
.head {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 12, 16, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.head__inner { display: flex; align-items: center; justify-content: space-between; height: 4rem; gap: 1rem; }
.mark {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text);
}
.mark__dot {
  width: 0.5rem; height: 0.5rem;
  background: var(--amber);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--amber-tint);
  flex: none;
}
.nav { display: flex; align-items: center; gap: 1.5rem; }
.nav a:not(.btn) { font-family: var(--mono); font-size: 0.8rem; color: var(--text-2); text-decoration: none; }
.nav a:not(.btn)::before { content: "/"; color: var(--faint); margin-right: 0.25rem; }
.nav a:not(.btn):hover { color: var(--amber); }

/* ── Sections ────────────────────────────────────────────────────────── */
.sec { padding-block: clamp(3.5rem, 8vw, 6.5rem); border-top: 1px solid var(--line); }
.sec--raised { background: var(--panel); }

/* ── Hero ────────────────────────────────────────────────────────────── */
.hero {
  padding-block: clamp(3rem, 7vw, 5.5rem) clamp(2.5rem, 5vw, 4rem);
  background:
    radial-gradient(1100px 420px at 12% -8%, rgba(255, 178, 36, 0.09), transparent 62%),
    linear-gradient(var(--void), var(--void));
}
.hero__eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--faint);
  margin: 0 0 1.6rem;
}
.hero__eyebrow::before { content: "// "; color: var(--amber); }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2.4rem; }

/* Spec strip — answers "what is it / what does it cost" immediately */
.strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--line);
  border-radius: 6px;
  margin-top: 3rem;
  overflow: hidden;
  background: var(--panel);
}
.strip__cell { padding: 1.1rem 1.25rem; border-right: 1px solid var(--line); }
.strip__cell:last-child { border-right: 0; }
.strip__k {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0 0 0.45rem;
}
.strip__v { font-family: var(--mono); font-size: 0.98rem; font-weight: 500; color: var(--text); margin: 0; }

/* ── Data table (cost of doing nothing) ──────────────────────────────── */
.data { margin-top: 3rem; border-top: 1px solid var(--line); }
.data__row {
  display: grid;
  grid-template-columns: 7.5rem 1fr auto;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}
.data__metric { font-family: var(--mono); font-size: 1.35rem; font-weight: 700; letter-spacing: -0.02em; }
.data__row[data-tone="bad"] .data__metric { color: var(--bad); }
.data__row[data-tone="warn"] .data__metric { color: var(--amber); }
.data__label { color: var(--text); margin: 0; }
.data__src { font-family: var(--mono); font-size: 0.72rem; color: var(--faint); white-space: nowrap; }
.note {
  margin-top: 2.2rem;
  padding-left: 1.2rem;
  border-left: 2px solid var(--amber);
  color: var(--text-2);
  max-width: 72ch;
}

/* ── Capability list ─────────────────────────────────────────────────── */
.caps { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; margin-top: 2.8rem; list-style: none; padding: 0; }
.caps li {
  counter-increment: cap;
  position: relative;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.3rem 1.4rem 1.3rem 3.6rem;
  color: var(--text);
}
.caps li::before {
  content: counter(cap, decimal-leading-zero);
  position: absolute;
  left: 1.3rem;
  top: 1.35rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--amber);
}
.caps { counter-reset: cap; }

/* ── Layer stack diagram ─────────────────────────────────────────────── */
.stack { margin-top: 2.8rem; display: flex; flex-direction: column; gap: 0; }
.layer {
  border: 1px solid var(--line-lit);
  border-radius: 6px;
  padding: 1.3rem 1.5rem;
  background: var(--panel-2);
  position: relative;
}
.layer + .layer { margin-top: -1px; }
.layer--1 { margin-inline: 0; }
.layer--2 { margin-inline: clamp(0.75rem, 3vw, 2.5rem); background: var(--panel); }
.layer--3 { margin-inline: clamp(1.5rem, 6vw, 5rem); background: var(--void); border-color: var(--amber); }
.layer__head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.layer__name { font-family: var(--mono); font-size: 0.9rem; font-weight: 700; letter-spacing: 0.16em; color: var(--text); margin: 0; }
.layer--3 .layer__name { color: var(--amber); }
.layer__day { font-family: var(--mono); font-size: 0.7rem; color: var(--faint); }
.layer__note { font-family: var(--mono); font-size: 0.8rem; color: var(--text-2); margin: 0.7rem 0 0; line-height: 1.7; }

/* ── Modules ─────────────────────────────────────────────────────────── */
.days { margin-top: 3rem; display: grid; gap: 2.6rem; }
.day__bar {
  display: flex;
  align-items: baseline;
  gap: 1.2rem;
  flex-wrap: wrap;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--amber);
}
.day__n { font-family: var(--mono); font-size: 0.85rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--amber); margin: 0; }
.day__take { margin: 0; color: var(--text-2); font-size: 0.97rem; max-width: 66ch; }
.mods { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 1.6rem; }
.mod { border-top: 1px solid var(--line-lit); padding-top: 1rem; }
.mod__n { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; color: var(--faint); }
.mod__t { font-family: var(--sans); font-weight: 600; font-size: 1.06rem; letter-spacing: -0.012em; margin: 0.5rem 0 0.5rem; }
.mod__b { color: var(--text-2); font-size: 0.95rem; margin: 0; }

/* ── Proof ───────────────────────────────────────────────────────────── */
.proof-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 1.5rem; margin-top: 2.8rem; align-items: stretch; }
.bigproof {
  border: 1px solid var(--amber);
  border-radius: 6px;
  background: linear-gradient(150deg, var(--amber-tint), transparent 65%), var(--panel-2);
  padding: 2rem 1.9rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.bigproof__k { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--amber); margin: 0 0 1rem; }
.bigproof__fig { font-family: var(--mono); font-size: clamp(3.2rem, 6vw, 4.4rem); font-weight: 700; line-height: 1; color: var(--amber); margin: 0 0 0.7rem; letter-spacing: -0.03em; }
.bigproof__claim { font-weight: 600; font-size: 1.1rem; margin: 0 0 1.1rem; }
.bigproof__detail { font-size: 0.92rem; color: var(--text-2); margin: 0; padding-top: 1.1rem; border-top: 1px solid var(--line-lit); }

.says { display: grid; gap: 1.5rem; }
.say { background: var(--panel-2); border: 1px solid var(--line); border-radius: 6px; padding: 1.6rem 1.7rem; margin: 0; }
.say__t { margin: 0 0 1.1rem; color: var(--text); font-size: 1rem; line-height: 1.6; }
.say__t::before { content: "> "; color: var(--amber); font-family: var(--mono); }
.say__by { display: flex; align-items: baseline; gap: 0.6rem; flex-wrap: wrap; font-family: var(--mono); font-size: 0.76rem; }
.say__n { color: var(--text); font-weight: 700; }
.say__r { color: var(--faint); }

.who { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 1.5rem; }
.who__card { background: var(--panel-2); border: 1px solid var(--line); border-radius: 6px; padding: 1.7rem; }
.who__head { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.who__photo { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; object-position: center top; border: 1px solid var(--line-lit); flex-shrink: 0; }
.who__avatar { width: 72px; height: 72px; border-radius: 50%; display: grid; place-items: center; background: var(--panel); border: 1px solid var(--line-lit); font-family: var(--mono); font-size: 1.5rem; color: var(--amber); flex-shrink: 0; }
.who__n { font-family: var(--mono); font-size: 1rem; font-weight: 700; margin: 0; }
.who__b { color: var(--text-2); font-size: 0.95rem; margin: 0 0 1.1rem; }
.who__l { font-family: var(--mono); font-size: 0.76rem; margin: 0; display: flex; gap: 0.9rem; flex-wrap: wrap; }
.who__l a { color: var(--cyan); text-decoration: none; }
.who__l a:hover { text-decoration: underline; }

/* ── Investment ledger ───────────────────────────────────────────────── */
.ledger { margin-top: 2.8rem; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.ledger__row { display: grid; grid-template-columns: 12rem 11rem 1fr; gap: 1.5rem; padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--line); align-items: baseline; }
.ledger__row:last-child { border-bottom: 0; }
.ledger__row:nth-child(odd) { background: var(--panel-2); }
.ledger__k { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-2); }
.ledger__v { font-family: var(--mono); font-size: 1.05rem; font-weight: 700; color: var(--amber); }
.ledger__note { color: var(--text-2); font-size: 0.95rem; }

.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 1.5rem; }
.pair__box { border: 1px solid var(--line); border-radius: 6px; padding: 1.6rem 1.7rem; background: var(--panel-2); }
.pair__box--flag { border-color: var(--amber); background: linear-gradient(150deg, var(--amber-tint), transparent 70%), var(--panel-2); }
.pair__h { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--amber); margin: 0 0 0.9rem; }
.pair__b { margin: 0; color: var(--text-2); font-size: 0.97rem; }

/* ── Qualification matrix ────────────────────────────────────────────── */
.matrix { margin-top: 2.8rem; border-top: 1px solid var(--line); }
.mrow { display: grid; grid-template-columns: 1fr 6rem 1fr; gap: 1.5rem; padding: 1.2rem 0; border-bottom: 1px solid var(--line); align-items: start; }
.mrow__sig { color: var(--text); margin: 0; }
.mrow__ans { color: var(--text-2); margin: 0; font-size: 0.95rem; }
.badge {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.3rem 0.6rem;
  border-radius: 3px;
  border: 1px solid;
  text-align: center;
  display: inline-block;
  white-space: nowrap;
}
.badge--yes { color: var(--ok); border-color: rgba(63, 185, 80, 0.45); background: rgba(63, 185, 80, 0.08); }
.badge--partly { color: var(--amber); border-color: rgba(255, 178, 36, 0.45); background: var(--amber-tint); }
.badge--no { color: var(--faint); border-color: var(--line-lit); background: transparent; }

/* ── Limits ──────────────────────────────────────────────────────────── */
.limits { margin-top: 2.8rem; display: grid; gap: 1.1rem; }
.limit { border: 1px solid var(--line); border-left: 2px solid var(--faint); border-radius: 0 6px 6px 0; padding: 1.4rem 1.6rem; background: var(--panel-2); }
.limit__t { font-family: var(--sans); font-weight: 600; font-size: 1.05rem; margin: 0 0 0.55rem; }
.limit__b { color: var(--text-2); margin: 0; font-size: 0.96rem; }

/* ── Business case block ─────────────────────────────────────────────── */
.case {
  margin-top: 2.8rem;
  border: 1px solid var(--line-lit);
  border-radius: 6px;
  background: var(--panel-2);
  overflow: hidden;
}
.case__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.3rem;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--faint);
  letter-spacing: 0.08em;
}
.case__dots { display: flex; gap: 0.4rem; }
.case__dots i { width: 0.6rem; height: 0.6rem; border-radius: 50%; background: var(--line-lit); display: block; }
.case__dots i:first-child { background: var(--amber); }
.case__body { padding: 1.8rem; }
.case__text { margin: 0; color: var(--text); font-size: 1rem; line-height: 1.75; }
.case__hint { margin: 1.4rem 0 0; padding-top: 1.2rem; border-top: 1px dashed var(--line-lit); font-family: var(--mono); font-size: 0.76rem; color: var(--amber); }

/* ── Close ───────────────────────────────────────────────────────────── */
.close {
  padding-block: clamp(4rem, 8vw, 6.5rem);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(900px 380px at 50% 120%, rgba(255, 178, 36, 0.11), transparent 65%),
    var(--panel);
  text-align: center;
}
.close__b { color: var(--text-2); font-size: 1.1rem; margin: 1.3rem auto 0; max-width: 58ch; }
.close__acts { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; margin-top: 2.3rem; }
.close__re { display: flex; gap: 1.6rem; justify-content: center; flex-wrap: wrap; margin: 2.3rem 0 0; padding: 0; list-style: none; }
.close__re li { font-family: var(--mono); font-size: 0.76rem; color: var(--text-2); }
.close__re li::before { content: "\2713"; color: var(--ok); margin-right: 0.45rem; }

/* ── Footer ──────────────────────────────────────────────────────────── */
.foot { border-top: 1px solid var(--line); padding-block: 3rem 2.2rem; background: var(--void); }
.foot__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; }
.foot__mark { font-family: var(--mono); font-size: 0.88rem; display: flex; align-items: center; gap: 0.55rem; margin: 0 0 0.7rem; }
.foot__tag { font-family: var(--mono); font-size: 0.74rem; color: var(--faint); margin: 0; }
.foot__col { display: flex; flex-direction: column; gap: 0.5rem; font-family: var(--mono); font-size: 0.78rem; color: var(--text-2); }
.foot__h { font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); margin: 0 0 0.3rem; }
.foot__col a { color: var(--text-2); text-decoration: none; }
.foot__col a:hover { color: var(--amber); }

/* ── Reveal ──────────────────────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 1000px) {
  .strip { grid-template-columns: repeat(3, 1fr); }
  .strip__cell:nth-child(3) { border-right: 0; }
  .mods { grid-template-columns: 1fr 1fr; }
  .proof-grid { grid-template-columns: 1fr; }
  .foot__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .caps { grid-template-columns: 1fr; }
  .mods { grid-template-columns: 1fr; }
  .who { grid-template-columns: 1fr; }
  .pair { grid-template-columns: 1fr; }
  .strip { grid-template-columns: 1fr 1fr; }
  .strip__cell { border-right: 0; border-bottom: 1px solid var(--line); }
  .ledger__row { grid-template-columns: 1fr; gap: 0.4rem; }
  .mrow { grid-template-columns: 1fr; gap: 0.6rem; }
  .data__row { grid-template-columns: 5.5rem 1fr; }
  .data__src { grid-column: 2; }
  .layer--2, .layer--3 { margin-inline: 0; }
}
@media (max-width: 680px) {
  .nav a:not(.btn) { display: none; }
  .foot__grid { grid-template-columns: 1fr; }
}

/* ── Reduced motion ──────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
}