/* ---------------------------------------------------------------------------
   Halo — landing page

   Três papéis tipográficos, e cada um significa uma coisa:
     serif    → as afirmações. A voz do Halo é de pesquisa, não de anúncio.
     system   → leitura corrida.
     mono     → tudo que é medida: rótulo, número, domínio, posição.

   O elemento-assinatura é o MARCADOR DE POSIÇÃO: o selo ordinal que gruda no
   nome de uma marca dentro da prosa da IA. É a unidade do produto — quem foi
   citado, e em que ordem — e é o único lugar onde a página levanta a voz.

   Paleta em packages/brand/tokens.css (`make brand-sync` traz a cópia).
--------------------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--halo-bg);
  color: var(--halo-ink);
  font-family: var(--halo-font-ui);
  font-size: 16px;
  line-height: 1.62;
  color-scheme: dark;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, p, ul, figure, figcaption { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: inherit; }

::selection { background: rgba(245, 196, 81, 0.26); }

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

.skip {
  position: absolute; left: -9999px; top: 8px;
  background: var(--halo-panel); padding: 10px 16px; border-radius: 8px; z-index: 50;
}
.skip:focus { left: 16px; }

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 24px; }

.mono {
  font-family: var(--halo-font-mono);
  font-variant-numeric: tabular-nums;
}

.display {
  font-family: var(--halo-font-display);
  font-weight: 400;
  letter-spacing: -0.021em;
  line-height: 1.06;
  text-wrap: balance;
}

.eyebrow {
  font-family: var(--halo-font-mono);
  font-size: 11px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--halo-dim);
}

.label {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--halo-dim);
}

.sep { color: var(--halo-slate); }
.dim { color: var(--halo-dim); }

/* atmosfera: a luz do halo, uma vez no topo e uma vez no fechamento */
.glow {
  position: absolute; inset: -10% 0 auto; height: 620px;
  background: var(--halo-glow);
  pointer-events: none;
}
.glow-low { opacity: 0.55; }

/* ------------------------------------------------------------------ topbar */

.topbar {
  position: sticky; top: 0; z-index: 30;
  background: rgba(15, 19, 32, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--halo-line);
}
.topbar-in {
  display: flex; align-items: center; gap: 28px;
  height: 62px;
}
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  text-decoration: none; color: var(--halo-gold);
}
.brand-name {
  font-family: var(--halo-font-display);
  font-size: 20px; letter-spacing: 0.01em; color: var(--halo-ink);
}
.topnav { display: flex; gap: 24px; margin-left: auto; }
.topnav a {
  font-size: 13.5px; color: var(--halo-muted); text-decoration: none;
  transition: color 0.15s;
}
.topnav a:hover { color: var(--halo-ink); }

/* --------------------------------------------------------------- botões */

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px; text-decoration: none;
  font-size: 14.5px; font-weight: 600; letter-spacing: 0.005em;
  padding: 12px 20px; border: 1px solid transparent;
  transition: transform 0.14s, background 0.16s, border-color 0.16s;
}
.btn:active { transform: translateY(1px); }

.btn-gold {
  color: #1a1205;
  background: linear-gradient(140deg, var(--halo-gold), var(--halo-gold-deep));
  box-shadow: 0 10px 30px -14px rgba(245, 196, 81, 0.7);
}
.btn-gold:hover { background: linear-gradient(140deg, #FFD877, #E9B444); }

.btn-ghost {
  color: var(--halo-ink);
  border-color: var(--halo-line-2);
  background: rgba(255, 255, 255, 0.03);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.07); }

.btn-sm { padding: 8px 14px; font-size: 13px; border-radius: 8px;
  color: var(--halo-ink); border-color: var(--halo-line-2); background: rgba(255, 255, 255, 0.03); }
.btn-sm:hover { background: rgba(255, 255, 255, 0.08); }

.btn-lg { padding: 15px 28px; font-size: 15.5px; }

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

.hero { position: relative; padding: 84px 0 96px; }
.hero .wrap { position: relative; }

.hero h1 {
  font-size: clamp(2.4rem, 1.5rem + 3.7vw, 4.3rem);
  margin: 18px 0 0;
  /* largo o bastante para o <br> do HTML decidir a quebra, e não o container */
  max-width: 24ch;
}

.lead {
  font-size: clamp(1.02rem, 0.97rem + 0.4vw, 1.22rem);
  line-height: 1.55;
  color: var(--halo-muted);
  max-width: 58ch;
  margin-top: 22px;
}

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

/* ------------------------------------------- o instrumento (assinatura) */

.instrument {
  margin-top: 56px;
  background: var(--halo-panel);
  border: 1px solid var(--halo-line-2);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 40px 80px -50px rgba(0, 0, 0, 0.9);
}

.inst-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 13px 20px;
  border-bottom: 1px solid var(--halo-line);
  background: rgba(255, 255, 255, 0.02);
}
.tag {
  font-family: var(--halo-font-mono);
  font-size: 10.5px; letter-spacing: 0.04em;
  color: var(--halo-dim);
  border: 1px solid var(--halo-line-2);
  border-radius: 999px; padding: 3px 10px;
}

.inst-q { padding: 22px 26px 4px; }
.qlabel { display: block; font-size: 10.5px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--halo-dim); }
.inst-q p {
  font-family: var(--halo-font-display);
  font-size: clamp(1.15rem, 1.05rem + 0.5vw, 1.45rem);
  margin-top: 8px; color: var(--halo-ink);
}

.inst-a { padding: 20px 26px 26px; }

.answer {
  font-size: clamp(1rem, 0.96rem + 0.3vw, 1.1rem);
  line-height: 1.95;
  color: var(--halo-muted);
  max-width: 68ch;
}

/* o marcador de posição — a coisa que a página é para ser lembrada por */
.ment {
  position: relative;
  color: var(--halo-ink);
  font-weight: 600;
  white-space: nowrap;
  padding: 2px 5px;
  border-radius: 5px;
  transition: color 0.35s ease, background 0.35s ease, box-shadow 0.35s ease;
}
.ment .ord {
  font-family: var(--halo-font-mono);
  font-style: normal;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-left: 5px;
  padding: 2px 5px;
  border-radius: 4px;
  vertical-align: 2px;
  /* `currentColor` no fundo não serve: ele resolveria para a cor que a própria
     regra acabou de definir, e o selo sairia invisível. Cor por variante. */
  background: var(--halo-ink);
  color: var(--halo-bg);
  display: inline-block;
  transform: scale(0.6);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.2, 1.3, 0.4, 1), opacity 0.25s ease;
}

.is-ready .ment.rival { color: var(--halo-steel); background: rgba(127, 168, 217, 0.1); }
.is-ready .ment.mine {
  color: var(--halo-gold); background: rgba(245, 196, 81, 0.12);
  box-shadow: inset 0 0 0 1px rgba(245, 196, 81, 0.28);
}
.is-ready .ment .ord {
  transform: scale(1); opacity: 1;
  transition-delay: calc(var(--i) * 0.18s + 0.45s);
}
.is-ready .ment.rival .ord { background: var(--halo-steel); }
.is-ready .ment.mine .ord { background: var(--halo-gold); }
.is-ready .ment { transition-delay: calc(var(--i) * 0.18s + 0.45s); }

/* fontes */
.sources { margin-top: 24px; padding-top: 18px; border-top: 1px dashed var(--halo-line-2); }
.sources ul { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.src {
  font-family: var(--halo-font-mono);
  font-size: 11.5px;
  color: var(--halo-muted);
  border: 1px solid var(--halo-line-2);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 999px;
  padding: 5px 11px;
}
.src-off {
  color: var(--halo-down);
  border-style: dashed;
  border-color: rgba(217, 115, 126, 0.4);
  background: transparent;
}

/* a leitura derivada — cada valor sai da resposta acima, nada é inventado */
.readout {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--halo-line);
  background: rgba(0, 0, 0, 0.18);
}
.ro {
  padding: 16px 20px;
  border-left: 1px solid var(--halo-line);
  display: flex; flex-direction: column; gap: 6px;
}
.ro:first-child { border-left: 0; }
.ro-k { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--halo-dim); }
.ro-v {
  font-family: var(--halo-font-mono);
  font-size: 21px; font-weight: 600; letter-spacing: -0.01em;
  color: var(--halo-ink);
}
.ro-v.gold { color: var(--halo-gold); }
.ro-v.down { color: var(--halo-down); }

.inst-foot {
  margin-top: 18px;
  font-size: 13.5px;
  color: var(--halo-dim);
  max-width: 62ch;
}

/* ------------------------------------------------------------- o que muda */

.band {
  border-top: 1px solid var(--halo-line);
  border-bottom: 1px solid var(--halo-line);
  background: rgba(255, 255, 255, 0.014);
  padding: 56px 0;
}
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.fact h2 {
  font-family: var(--halo-font-display);
  font-size: 1.32rem; font-weight: 400; letter-spacing: -0.015em;
  line-height: 1.2; color: var(--halo-ink);
}
.fact p { margin-top: 10px; font-size: 14.5px; color: var(--halo-muted); }

/* ------------------------------------------------------------- seções */

.sec { padding: 96px 0; }
.sec-alt { background: rgba(255, 255, 255, 0.014); border-block: 1px solid var(--halo-line); }

.sechead { max-width: 62ch; margin: 0 auto 48px; text-align: center; }
.sechead h2 { font-size: clamp(1.7rem, 1.3rem + 1.7vw, 2.5rem); margin-top: 14px; }
.sublead { margin-top: 16px; font-size: 15px; color: var(--halo-muted); }

/* Título de coluna: vive em metade da largura, então não pode usar a escala do
   título centralizado — senão quebra em três linhas raquíticas. */
.sechead-left { text-align: left; margin: 0; max-width: none; }
.sechead-left h2 { font-size: clamp(1.6rem, 1.2rem + 1.35vw, 2.15rem); }

/* camadas de métrica */
.layers { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.layer {
  border: 1px solid var(--halo-line-2);
  border-radius: 14px;
  padding: 24px 24px 8px;
  background: var(--halo-panel);
}
.layer:last-child { background: transparent; border-style: dashed; }
.layer-k {
  font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--halo-gold);
  padding-bottom: 16px; border-bottom: 1px solid var(--halo-line);
}
.layer:last-child .layer-k { color: var(--halo-steel); }
.layer-note { color: var(--halo-dim); letter-spacing: 0.04em; text-transform: none; }
.layer-note::before { content: "· "; }

.metrics li { padding: 18px 0; border-bottom: 1px solid var(--halo-line); }
.metrics li:last-child { border-bottom: 0; }
.metrics h3 { font-size: 15px; font-weight: 600; letter-spacing: -0.005em; }
.metrics p { margin-top: 5px; font-size: 14px; color: var(--halo-muted); }

/* método */
.method { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.method-3 { grid-template-columns: repeat(3, 1fr); }
.mcard {
  border: 1px solid var(--halo-line-2);
  border-radius: 14px; padding: 24px;
  background: var(--halo-panel);
}
.mcard h3 {
  font-family: var(--halo-font-display);
  font-size: 1.16rem; font-weight: 400; letter-spacing: -0.012em; color: var(--halo-gold);
}
.mcard p { margin-top: 10px; font-size: 14.5px; color: var(--halo-muted); }

/* --------------------------------------------------------------- o painel */

.panel-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
}
.checks { margin-top: 26px; display: grid; gap: 12px; }
.checks li {
  position: relative; padding-left: 26px;
  font-size: 14.5px; color: var(--halo-muted);
}
.checks li::before {
  content: ""; position: absolute; left: 4px; top: 0.62em;
  width: 8px; height: 8px; border-radius: 50%;
  border: 1.5px solid var(--halo-gold);
}

.mock {
  background: var(--halo-panel);
  border: 1px solid var(--halo-line-2);
  border-radius: 16px;
  padding: 18px 20px 22px;
  box-shadow: 0 40px 80px -50px rgba(0, 0, 0, 0.9);
}
.mock-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.mock-div { height: 1px; background: var(--halo-line); margin: 22px -20px 18px; }

.funnel, .rivals { margin-top: 14px; display: grid; gap: 10px; }
.fn, .rv { display: grid; grid-template-columns: 1fr 42% 44px; align-items: center; gap: 12px; }
.fn-k, .rv-k { font-size: 13px; color: var(--halo-muted); }
.fn-track, .rv-track { height: 7px; border-radius: 999px; background: rgba(255, 255, 255, 0.06); overflow: hidden; }
.fn-track i, .rv-track i {
  display: block; height: 100%; width: var(--w);
  background: var(--halo-slate); border-radius: 999px;
}
.fn.gold .fn-track i {
  background: linear-gradient(90deg, var(--halo-gold-deep), var(--halo-gold));
  box-shadow: 0 0 16px -2px rgba(245, 196, 81, 0.5);
}
.fn.gold .fn-k { color: var(--halo-ink); }
.rv.you .rv-track i { background: linear-gradient(90deg, var(--halo-gold-deep), var(--halo-gold)); }
.rv.you .rv-k { color: var(--halo-ink); }
.fn-v, .rv-v { font-size: 12.5px; text-align: right; color: var(--halo-ink); }

/* ------------------------------------------------------------------- cta */

.cta { position: relative; padding: 104px 0 110px; text-align: center; overflow: hidden; }
.cta-in { position: relative; }
.cta h2 { font-size: clamp(1.8rem, 1.4rem + 1.8vw, 2.7rem); }
.cta .lead { margin: 20px auto 32px; text-align: center; }
.cta-note { margin-top: 16px; font-size: 11.5px; letter-spacing: 0.05em; color: var(--halo-dim); }

/* ------------------------------------------------------------ o formulário */

.form-piloto {
  margin: 36px auto 0;
  max-width: 560px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  text-align: left;
}
.field-wide { grid-column: 1 / -1; }
.field label {
  display: block;
  font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--halo-dim);
  margin-bottom: 6px;
}
.field input, .field textarea {
  width: 100%;
  background: var(--halo-panel-2);
  border: 1px solid var(--halo-line-2);
  border-radius: 8px;
  padding: 11px 13px;
  color: var(--halo-ink);
  font-family: var(--halo-font-ui);
  font-size: 14.5px;
  resize: vertical;
}
.field input::placeholder, .field textarea::placeholder { color: var(--halo-dim); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--halo-gold); }

/* honeypot: fora da tela, não `display:none` — alguns bots pulam campos ocultos
   assim, mas raramente checam a posição. Invisível e inacessível por teclado. */
.field-hp { position: absolute; left: -9999px; }

.form-actions {
  grid-column: 1 / -1;
  margin-top: 8px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.form-msg { min-height: 1.2em; font-size: 12.5px; color: var(--halo-muted); }
.form-msg.ok { color: var(--halo-up); }
.form-msg.err { color: var(--halo-down); }

.form-noscript { margin-top: 20px; font-size: 13px; color: var(--halo-muted); }

/* ----------------------------------------------------------------- rodapé */

.foot { border-top: 1px solid var(--halo-line); padding: 26px 0; }
.foot-in { display: flex; justify-content: space-between; gap: 16px; font-size: 11.5px; color: var(--halo-muted); }

/* ------------------------------------------------------------- revelação */

/* Só esconde se o JS confirmou que está vivo (classe `js` no <html>). Conteúdo
   invisível por script quebrado é o pior defeito possível numa landing. */
.js .reveal { opacity: 0; transform: translateY(10px); }
.js .reveal.seen { opacity: 1; transform: none; transition: opacity 0.5s ease, transform 0.5s ease; }

/* --------------------------------------------------------------- telas */

@media (max-width: 900px) {
  .facts, .layers, .method { grid-template-columns: 1fr; }
  .facts { gap: 28px; }
  .panel-grid { grid-template-columns: 1fr; gap: 36px; }
  .readout { grid-template-columns: 1fr 1fr; }
  .ro:nth-child(3) { border-left: 0; }
  .ro:nth-child(n+3) { border-top: 1px solid var(--halo-line); }
  .topnav { display: none; }
  .brand { margin-right: auto; }
}

@media (max-width: 620px) {
  .hero { padding: 56px 0 68px; }
  .sec { padding: 68px 0; }
  .cta { padding: 76px 0 84px; }
  .instrument { border-radius: 14px; }
  .inst-q { padding: 18px 18px 4px; }
  .inst-a { padding: 16px 18px 22px; }
  .answer { line-height: 1.85; }
  .readout { grid-template-columns: 1fr 1fr; }
  .cta-row .btn { flex: 1 1 100%; }
  .fn, .rv { grid-template-columns: 1fr 34% 42px; gap: 8px; }
  .form-piloto { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    transition-delay: 0ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}