/* Layout: uma página de livro. Coluna de texto larga à esquerda, a "página arrumada" com fita marcadora à direita; seções seguem como capítulos curtos. */
:root {
  --paper: #F4F6F1;      /* papel fotográfico, levemente frio */
  --card: #FFFFFF;
  --ink: #17212A;        /* tinta de livro */
  --muted: #56636A;
  --line: #D6DCD3;
  --cloth: #23574F;      /* tecido de encadernação */
  --cloth-ink: #FFFFFF;
  --ribbon: #D8952A;     /* fita marcadora */
  --font-display: "Gloock", "Georgia", "Times New Roman", serif;
  --font-body: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --step-0: 1.0625rem; --step-1: 1.25rem; --step-2: 1.6rem; --step-3: clamp(2rem, 4.6vw, 3.25rem);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #10181D; --card: #172229; --ink: #E8ECE5; --muted: #9DAAA8; --line: #28363D;
    --cloth: #7DBDB1; --cloth-ink: #0E1A19; --ribbon: #E9AE4B; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #10181D; --card: #172229; --ink: #E8ECE5; --muted: #9DAAA8; --line: #28363D;
  --cloth: #7DBDB1; --cloth-ink: #0E1A19; --ribbon: #E9AE4B; color-scheme: dark;
}
[hidden] { display: none !important; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--font-body);
}
.wrap { max-width: 72rem; margin-inline: auto; padding-inline: clamp(16px, 4vw, 40px); }
a { color: var(--cloth); text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--ribbon); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { text-wrap: balance; margin: 0; }
h2 { font: 400 var(--step-2)/1.2 var(--font-display); }
h3 { font-size: var(--step-1); line-height: 1.3; }
p { margin: 0; }
.mono { font-family: var(--font-mono); font-size: .9rem; }
.eyebrow { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); font-weight: 700; }

/* Cabeçalho */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 20px; }
.logo { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; text-decoration: none; color: var(--ink); }
.logo b { font: 400 1.9rem/1 var(--font-display); }
.logo span { color: var(--muted); font-size: .95rem; font-style: italic; }
.lang { display: flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.lang button {
  font: 700 .85rem var(--font-body); border: 0; background: none; color: var(--muted);
  padding: 6px 12px; border-radius: 999px; cursor: pointer;
}
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

/* Abertura */
.hero { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(32px, 5vw, 72px); align-items: center; padding-block: 32px 72px; }
.hero h1 { font: 400 var(--step-3)/1.08 var(--font-display); letter-spacing: -.01em; }
.hero .lead { margin-top: 20px; font-size: var(--step-1); color: var(--muted); max-width: 34em; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-top: 28px; }
.btn {
  display: inline-block; font: 700 var(--step-0) var(--font-body); text-decoration: none; cursor: pointer;
  background: var(--cloth); color: var(--cloth-ink); border: 0; border-radius: 10px; padding: 16px 26px;
}
.btn:hover { filter: brightness(1.08); }
.small { font-size: .9rem; color: var(--muted); }

/* A página arrumada */
.page {
  position: relative; background: var(--card); border: 1px solid var(--line); border-radius: 4px 14px 14px 4px;
  padding: 28px 28px 24px 34px; box-shadow: 0 1px 0 var(--line), 0 18px 40px -24px rgba(10, 20, 25, .35);
}
.page::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 8px; background: var(--cloth); border-radius: 4px 0 0 4px; }
.ribbon { position: absolute; top: -6px; right: 36px; width: 22px; height: 88px; background: var(--ribbon);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 82%, 0 100%); }
.page h3 { font: 700 .8rem var(--font-body); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.loose { list-style: none; margin: 12px 0 0; padding: 0; display: grid; gap: 6px; }
.loose li { font: 400 .82rem/1.35 var(--font-mono); color: var(--muted); text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--muted) 45%, transparent);
  overflow-wrap: anywhere; }
.loose li:nth-child(odd) { transform: translateX(10px); }
.loose li:nth-child(3n) { transform: translateX(22px); }
.arrow { margin: 18px 0 14px; border-top: 1px dashed var(--line); position: relative; }
.arrow span { position: absolute; left: 50%; top: -0.8em; transform: translateX(-50%); background: var(--card); padding: 0 10px; color: var(--ribbon); font-weight: 700; }
.tree { list-style: none; margin: 12px 0 0; padding: 0; display: grid; gap: 4px; font: 500 .9rem/1.45 var(--font-mono); }
.tree li { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.tree .d1 { padding-left: 1.2em; } .tree .d2 { padding-left: 2.4em; } .tree .d3 { padding-left: 3.6em; }
.tree .n { color: var(--muted); font-weight: 400; font-variant-numeric: tabular-nums; }
.tree .root { color: var(--cloth); font-weight: 500; }
.example { margin-top: 16px; font-size: .8rem; color: var(--muted); }
@media (prefers-reduced-motion: no-preference) {
  .tree li { animation: settle .6s ease-out both; }
  .tree li:nth-child(2) { animation-delay: .1s; } .tree li:nth-child(3) { animation-delay: .2s; }
  .tree li:nth-child(4) { animation-delay: .3s; } .tree li:nth-child(5) { animation-delay: .4s; }
  .tree li:nth-child(6) { animation-delay: .5s; } .tree li:nth-child(7) { animation-delay: .6s; }
  @keyframes settle { from { opacity: .35; transform: translateX(8px); } to { opacity: 1; transform: none; } }
}

/* Capítulos */
section.chapter { padding-block: 64px; border-top: 1px solid var(--line); }
.chapter-head { display: grid; gap: 10px; max-width: 40rem; margin-bottom: 36px; }
.chapter-head p { color: var(--muted); }
.places { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.places div, .result div, .calm div { display: grid; gap: 8px; align-content: start; }
.places h3 { font: 400 var(--step-1)/1.2 var(--font-display); }
.places p, .result p, .calm p { color: var(--muted); }
.result { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.result .mono { color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 6px 10px; justify-self: start; overflow-wrap: anywhere; }
.calm { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 48px; max-width: 60rem; }

/* Diagnóstico */
.diag { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.diag .chapter-head { margin: 0; }
.readout { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 24px; display: grid; gap: 0; }
.readout dl { margin: 0; display: grid; }
.readout .row { display: flex; justify-content: space-between; gap: 16px; padding-block: 12px; border-bottom: 1px dashed var(--line); }
.readout .row:last-child { border-bottom: 0; }
.readout dt { color: var(--muted); }
.readout dd { margin: 0; font: 500 1.05rem var(--font-mono); font-variant-numeric: tabular-nums; }
.readout .big dd { color: var(--cloth); }

/* Lista de espera */
.join { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(32px, 5vw, 72px); align-items: start; }
.join .chapter-head { margin-bottom: 20px; }
.facts { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; color: var(--muted); }
.facts li { padding-left: 1.4em; position: relative; }
.facts li::before { content: ""; position: absolute; left: 0; top: .55em; width: .55em; height: .55em; background: var(--ribbon); border-radius: 2px; }
form { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: clamp(20px, 3vw, 32px); display: grid; gap: 22px; }
fieldset { border: 0; padding: 0; margin: 0; display: grid; gap: 10px; min-width: 0; }
legend { font-weight: 700; margin-bottom: 10px; padding: 0; }
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.plan { position: relative; }
.plan input { position: absolute; opacity: 0; inset: 0; }
.plan label {
  display: grid; gap: 4px; height: 100%; cursor: pointer; border: 1.5px solid var(--line); border-radius: 10px; padding: 14px;
}
.plan input:checked + label { border-color: var(--cloth); box-shadow: inset 0 0 0 1px var(--cloth); }
.plan input:focus-visible + label { outline: 3px solid var(--ribbon); outline-offset: 2px; }
.plan b { font-size: 1rem; }
.plan .price { font: 500 1.05rem var(--font-mono); font-variant-numeric: tabular-nums; }
.plan .who { font-size: .85rem; color: var(--muted); }
.field { display: grid; gap: 6px; }
.field label { font-weight: 700; }
input[type="email"] {
  font: 400 var(--step-0) var(--font-body); color: var(--ink); background: var(--paper);
  border: 1.5px solid var(--line); border-radius: 10px; padding: 14px; width: 100%;
}
input[type="email"]:focus { border-color: var(--cloth); outline: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--cloth) 25%, transparent); }
.checks { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.check { display: flex; gap: 10px; align-items: flex-start; }
.check input { width: 1.2rem; height: 1.2rem; margin-top: .2rem; accent-color: var(--cloth); flex: none; }
.err { color: #B3261E; font-weight: 700; }
:root[data-theme="dark"] .err { color: #FF8A80; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .err { color: #FF8A80; } }
.done { display: grid; gap: 10px; }
.done h3 { font: 400 var(--step-2)/1.2 var(--font-display); }

/* Perguntas */
.faq { display: grid; gap: 0; max-width: 46rem; }
details { border-bottom: 1px solid var(--line); padding-block: 18px; }
summary { font-weight: 700; font-size: var(--step-1); cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-family: var(--font-mono); color: var(--ribbon); }
details[open] summary::after { content: "–"; }
details p { margin-top: 10px; color: var(--muted); max-width: 40em; }

footer { border-top: 1px solid var(--line); padding-block: 40px 56px; display: grid; gap: 16px; color: var(--muted); font-size: .95rem; }
footer p { max-width: 48em; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 24px; }

@media (max-width: 900px) {
  .hero, .diag, .join { grid-template-columns: 1fr; }
  .places { grid-template-columns: repeat(2, 1fr); }
  .result { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .places, .calm, .plans { grid-template-columns: 1fr; }
  .hero { padding-block: 16px 56px; }
  .page { padding: 24px 18px 20px 26px; }
}

html { scroll-padding-top: 24px; }
.skip { position: absolute; top: -100px; left: 16px; z-index: 10; background: var(--card); padding: 12px; }
.skip:focus { top: 12px; }
.btn:disabled { opacity: .65; cursor: wait; }
select { font: inherit; background: var(--paper); color: var(--ink); border: 1.5px solid var(--line); border-radius: 10px; padding: 14px; width: 100%; }
.trap { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.legal { max-width: 48rem; margin-inline: auto; padding-block: 32px 72px; display: grid; gap: 24px; }
.legal h1 { font: 400 var(--step-3)/1.15 var(--font-display); }
.legal section { display: grid; gap: 12px; }
.legal li + li { margin-top: 8px; }
.legal ul { margin: 0; padding-left: 24px; }
@media (max-width: 560px) { .logo span { max-width: 16ch; } .tree .d3 { padding-left: 1.8em; } }