/* Agents Maestro LP — papel-e-tinta, um acento âmbar (CONCEPT §4)
   serifa = direção humana · mono = execução da máquina */

/* ---------- Fontes (self-hosted, subset latin — BLUEPRINT §3) ---------- */
@font-face {
  font-family: "Fraunces";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/fraunces-600.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/inter-400.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/inter-600.woff2") format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/jetbrains-mono-400.woff2") format("woff2");
}

/* ---------- Tokens ---------- */
:root {
  --paper: #FAFAF8;
  --ink: #141414;
  --muted: #6B6B6B;
  --dark: #0B0E11;
  --amber: #F57700;      /* amostrado da UI do FlowPilot (ponto "question waiting") — só chips/pontos/destaques */
  --amber-text: #B45309; /* variante AA para texto/links sobre papel */
  --line: #E6E4DE;       /* hairline sobre papel */
  --dark-text: #E9E7E2;  /* texto sobre bloco escuro */
  --dark-muted: #9BA1A8; /* apoio sobre bloco escuro */
  --dark-line: rgba(255, 255, 255, 0.14);
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --prose: 42rem;
  --wide: 58rem;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.15; margin: 0; }
p { margin: 0 0 1.1em; }
a { color: var(--amber-text); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ink); }
img, video { max-width: 100%; height: auto; display: block; }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: var(--paper); padding: 0.6em 1em; z-index: 99;
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

.wrap { max-width: var(--wide); margin: 0 auto; padding: 0 1.25rem; }
.prose { max-width: var(--prose); }

section { padding: 5.5rem 0; }
@media (max-width: 640px) { section { padding: 3.75rem 0; } }

/* ---------- Chips (motif do FlowPilot — CONCEPT §4) ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 0.55em;
  font-family: var(--mono); font-size: 0.8125rem; letter-spacing: 0.06em;
  color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 0.35em 0.95em; margin: 0 0 1.6rem;
  background: #fff;
}
.chip .dot {
  width: 0.5em; height: 0.5em; border-radius: 50%;
  background: var(--amber); flex: none;
}
.on-dark .chip { background: transparent; border-color: var(--dark-line); color: var(--dark-muted); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav-in {
  max-width: var(--wide); margin: 0 auto; padding: 0.85rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.wordmark {
  font-family: var(--serif); font-weight: 600; font-size: 1.2rem;
  color: var(--ink); text-decoration: none;
}
.wordmark:hover { color: var(--ink); }
.nav-right { display: flex; align-items: center; gap: 1.1rem; }
.lang {
  font-family: var(--mono); font-size: 0.8125rem; letter-spacing: 0.06em;
  color: var(--muted); text-decoration: none;
  border: 1px solid var(--line); border-radius: 999px; padding: 0.3em 0.85em;
}
.lang:hover { color: var(--ink); border-color: var(--muted); }

/* ---------- Botões ---------- */
.btn {
  display: inline-block;
  background: var(--ink); color: var(--paper);
  font-weight: 600; font-size: 1rem; text-decoration: none;
  padding: 0.8em 1.7em; border-radius: 999px;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { color: var(--paper); opacity: 0.88; transform: translateY(-1px); }
.btn-sm { font-size: 0.875rem; padding: 0.55em 1.2em; }

/* ---------- Hero ---------- */
.hero { padding: 5rem 0 5.5rem; }
@media (max-width: 640px) { .hero { padding: 3rem 0 3.75rem; } }
.headline {
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  letter-spacing: -0.015em;
  max-width: 14ch;
}
.cursor {
  display: inline-block; width: 0.09em; min-width: 3px; height: 0.92em;
  background: var(--amber); vertical-align: -0.08em; margin-left: 0.04em;
  animation: blink 1.06s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { display: none; } }
.subheadline {
  font-size: 1.2rem; line-height: 1.65; color: var(--muted);
  max-width: var(--prose); margin: 1.6rem 0 0;
}
.hero-cta { margin-top: 2.4rem; }

/* Moldura escura do vídeo — a superfície da máquina */
.demo {
  background: var(--dark); border-radius: 14px; padding: 0.75rem;
  margin-top: 3rem;
  box-shadow: 0 24px 60px -30px rgba(11, 14, 17, 0.5);
}
.demo-bar {
  display: flex; align-items: center; gap: 0.55em;
  font-family: var(--mono); font-size: 0.8125rem; letter-spacing: 0.06em;
  color: var(--dark-muted); padding: 0.35rem 0.5rem 0.75rem;
}
.demo-bar .dot { width: 0.5em; height: 0.5em; border-radius: 50%; background: var(--amber); }
.demo video { border-radius: 8px; width: 100%; }

/* ---------- Como funciona ---------- */
.steps { list-style: none; margin: 0; padding: 0; max-width: var(--prose); }
.steps li {
  display: grid; grid-template-columns: 3.4rem 1fr; gap: 1.1rem;
  padding: 1.5rem 0; border-top: 1px solid var(--line);
}
.steps li:last-child { border-bottom: 1px solid var(--line); }
.step-n {
  font-family: var(--mono); font-size: 0.8125rem; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px;
  width: 2.6rem; height: 2.6rem; display: flex; align-items: center; justify-content: center;
  background: #fff; margin-top: 0.2rem;
}
.steps h3 { font-size: 1.35rem; margin-bottom: 0.35rem; }
.steps p { margin: 0; color: var(--muted); }
@media (max-width: 480px) {
  .steps li { grid-template-columns: 1fr; gap: 0.6rem; }
}
.thesis {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem); line-height: 1.35;
  max-width: 30ch; margin: 3.2rem 0 0;
}
.thesis em { font-style: normal; color: var(--amber-text); }

/* ---------- O caminho (bloco escuro) ---------- */
.on-dark { background: var(--dark); color: var(--dark-text); }
.on-dark h2 { color: var(--dark-text); }
.on-dark .lead { color: var(--dark-muted); max-width: var(--prose); }
.trail { list-style: none; margin: 2.6rem 0 0; padding: 0; max-width: var(--prose); }
.trail li {
  display: grid; grid-template-columns: 3.4rem 1fr; gap: 1.1rem; align-items: baseline;
  padding: 1.1rem 0; border-top: 1px solid var(--dark-line);
}
.trail li:last-child { border-bottom: 1px solid var(--dark-line); }
.trail-n { font-family: var(--mono); font-size: 0.875rem; color: var(--amber); }
.trail h3 { font-size: 1.2rem; display: inline; margin-right: 0.6em; }
.trail p { display: inline; margin: 0; color: var(--dark-muted); }
.trail-close { margin-top: 2.4rem; color: var(--dark-muted); max-width: var(--prose); }
.trail-close strong { color: var(--dark-text); font-weight: 600; }

/* ---------- Assinar ---------- */
.subscribe-card {
  border: 1px solid var(--line); border-radius: 14px; background: #fff;
  padding: 1.25rem; max-width: 34rem; margin-top: 2rem;
}
.subscribe-card iframe { width: 100%; border: 0; display: block; }
.subscribe-alt { font-size: 0.9375rem; color: var(--muted); margin-top: 1rem; }

/* ---------- FAQ ---------- */
.faq { max-width: var(--prose); }
.faq h3 { font-size: 1.3rem; margin: 2rem 0 0.4rem; }
.faq p { color: var(--muted); margin: 0; }
.faq p.faq-cta { margin-top: 2.6rem; font-weight: 600; }

/* ---------- Quem escreve ---------- */
.bio { max-width: var(--prose); }
.bio h2 { font-size: 1.9rem; margin-bottom: 1.2rem; }
.contact { font-family: var(--mono); font-size: 0.9375rem; margin-top: 1.6rem; }

/* ---------- Footer ---------- */
.footer { background: var(--dark); color: var(--dark-muted); padding: 2.6rem 0; }
.footer-in {
  max-width: var(--wide); margin: 0 auto; padding: 0 1.25rem;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem;
}
.footer .wordmark { color: var(--dark-text); }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.4rem; align-items: center; }
.footer a { color: var(--dark-muted); font-size: 0.9375rem; text-decoration: none; }
.footer a:hover { color: var(--dark-text); }
.footer-legal { width: 100%; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.05em; margin-top: 0.6rem; }

/* ---------- Entradas no scroll ---------- */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
  .js .reveal.in { opacity: 1; transform: none; }
}