/* ============================================================
   Tutorial — Passphrase na BlueWallet
   O Novo Dinheiro · Escola de Autocustódia de Bitcoin
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; }
img { max-width: 100%; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.read { max-width: var(--readw); }

/* ---------- vignette base ---------- */
body::before {
  content: "";
  position: fixed; inset: 0;
  background: radial-gradient(120% 80% at 50% -10%, rgba(198,169,107,0.07), transparent 60%);
  pointer-events: none; z-index: 0;
}
main, header.site, footer.site { position: relative; z-index: 1; }

/* =================== HEADER =================== */
header.site {
  position: sticky; top: 0; z-index: 50;
  height: 64px;
  display: flex; align-items: center;
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  backdrop-filter: blur(8px) saturate(1.2);
  border-bottom: 1px solid var(--rule);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 34px; height: auto; display: block; }
.brand .wm { display: flex; flex-direction: column; line-height: 1; gap: 3px; }
.brand .wm b {
  font-family: var(--classical); font-weight: 600; letter-spacing: 0.16em;
  font-size: 12px; color: var(--ink); text-transform: uppercase;
}
.brand .wm span {
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--gold);
}
.ver-badge {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  color: var(--fg-3); border: 1px solid var(--rule); border-radius: var(--r-pill);
  padding: 6px 13px; white-space: nowrap;
}

/* =================== HERO =================== */
.hero { padding: 86px 0 56px; }
.hero .eyebrow { display: inline-flex; align-items: center; gap: 12px; margin-bottom: 26px; }
.hero h1 { font-size: clamp(40px, 5.4vw, 70px); margin-bottom: 26px; }
.hero .lede { max-width: 600px; margin-bottom: 34px; }
.hero-meta {
  display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.05em; color: var(--fg-3);
  margin-bottom: 36px;
}
.hero-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--gold); display: inline-block; }
.hero-meta b { color: var(--gold); font-weight: 500; }

/* =================== SECTIONS =================== */
section.block { padding: 74px 0; border-top: 1px solid var(--rule); }
.sec-head { max-width: 820px; margin-bottom: 48px; }
.sec-head .eyebrow { display: inline-flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.sec-head h2 { margin-bottom: 18px; }
.sec-head p { color: var(--fg-2); font-size: var(--fs-body-lg); margin: 0; max-width: 640px; }

.cols { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: start; }
.prose p { color: var(--fg-2); font-size: var(--fs-body-lg); line-height: 1.7; }
.prose p + p { margin-top: 1.1em; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose em.g { font-style: italic; color: var(--gold); }
code, .mono-pill {
  font-family: var(--mono); font-size: 0.88em; background: var(--bg-elev);
  padding: 2px 7px; border-radius: var(--r-xs); color: var(--gold); border: 1px solid var(--rule);
}

/* card primitive */
.card {
  background: var(--surface-card); border: var(--border-card); border-radius: var(--r-xl);
  box-shadow: var(--shadow-card); padding: 30px;
}

/* ---- Seed → A/B diagram ---- */
.diagram { padding: 34px 30px; }
.diagram .dlabel { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 22px; }
.seed-node {
  display: flex; align-items: center; gap: 14px; padding: 16px 18px;
  border: 1px solid var(--rule); border-radius: var(--r-md); background: var(--bg);
}
.seed-node .ic { color: var(--gold); flex: none; display: flex; }
.seed-node .t b { display: block; font-family: var(--sans); font-weight: 600; color: var(--ink); font-size: 15px; }
.seed-node .t span { font-family: var(--mono); font-size: 11px; color: var(--fg-3); letter-spacing: 0.04em; }
.branch { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.branch-line { height: 22px; position: relative; }
.branch-line::before { content:""; position:absolute; left:50%; top:0; width:1px; height:11px; background:var(--rule-strong); }
.branch-line::after { content:""; position:absolute; left:25%; right:25%; top:11px; height:1px; background:var(--rule-strong); }
.branch-line i { position:absolute; top:11px; width:1px; height:11px; background:var(--rule-strong); }
.branch-line i.l { left:25%; } .branch-line i.r { right:25%; }
.wallet-node {
  padding: 15px 16px; border-radius: var(--r-md); border: 1px solid var(--rule); background: var(--bg);
}
.wallet-node.real { border-color: var(--rule-strong); box-shadow: 0 0 22px -10px rgba(198,169,107,0.4); }
.wallet-node .wn-top { display:flex; align-items:center; gap:8px; margin-bottom: 8px; }
.wallet-node .wn-top b { font-family: var(--serif); font-size: 17px; color: var(--ink); }
.wallet-node .wn-top .tag { margin-left:auto; font-family:var(--mono); font-size:9px; letter-spacing:0.1em; text-transform:uppercase; padding:3px 7px; border-radius:var(--r-pill); }
.tag.empty { color: var(--fg-3); border:1px solid var(--rule); }
.tag.gold { color: var(--bg); background: var(--gold); font-weight:600; }
.wallet-node p { margin:0; font-size: 13px; color: var(--fg-3); line-height: 1.5; }
.wallet-node .addr { font-family: var(--mono); font-size: 11px; color: var(--fg-3); margin-top: 8px; letter-spacing: 0.02em; }
.wallet-node.real .addr { color: var(--gold); }

/* ---- inequality callout ---- */
.ineq {
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
  margin-top: 26px; padding: 20px 24px; border: var(--border-card); border-radius: var(--r-lg);
  background: var(--surface-card);
}
.ineq .x { font-family: var(--serif); font-size: 30px; color: var(--gold); }
.ineq .side b { display:block; font-family: var(--sans); font-weight:600; color: var(--ink); font-size: 15px; }
.ineq .side span { font-size: 13px; color: var(--fg-3); }

/* =================== RISK =================== */
.warn {
  border: 1px solid var(--rule-strong); border-left: 3px solid var(--gold);
  border-radius: var(--r-lg); background: var(--surface-card);
  padding: 30px 34px; display: flex; gap: 22px; align-items: flex-start;
}
.warn .ic { color: var(--gold); flex: none; margin-top: 2px; }
.warn h3 { font-family: var(--serif); font-size: 26px; color: var(--ink); margin: 0 0 10px; font-weight: 500; }
.warn p { margin: 0; color: var(--fg-2); font-size: var(--fs-body-lg); line-height: 1.6; max-width: 640px; }
.warn p em { color: var(--gold); font-style: italic; }

.opt-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.opt { padding: 26px; }
.opt .num { font-family: var(--mono); font-size: 12px; color: var(--gold); letter-spacing: 0.1em; margin-bottom: 14px; }
.opt h4 { font-family: var(--serif); font-size: 21px; font-weight: 500; color: var(--ink); margin: 0 0 10px; }
.opt p { margin: 0; font-size: 14.5px; color: var(--fg-3); line-height: 1.6; }
.opt .who { margin-top: 14px; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-3); }

/* =================== PRÉ-REQUISITOS =================== */
.checklist { display: grid; gap: 0; }
.checklist .ci { display: flex; gap: 18px; align-items: flex-start; padding: 20px 0; border-bottom: 1px solid var(--rule); }
.checklist .ci:first-child { padding-top: 0; }
.checklist .ci:last-child { border-bottom: none; }
.checklist .ck {
  flex: none; width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--rule-strong);
  display: flex; align-items: center; justify-content: center; color: var(--gold); margin-top: 1px;
}
.checklist .ci b { display: block; color: var(--ink); font-weight: 600; font-size: 16px; margin-bottom: 3px; }
.checklist .ci span { color: var(--fg-3); font-size: 14.5px; line-height: 1.55; }

/* =================== STEPPER =================== */
.stepper-block { padding-bottom: 40px; }
.stepper {
  display: grid; grid-template-columns: 340px 1fr; gap: 56px; align-items: center;
  min-height: 720px;
}
.stage { display: flex; justify-content: center; }

/* iPhone frame */
.phone {
  --pw: 320px;
  width: var(--pw); aspect-ratio: 1125 / 2436;
  background: #050505; border-radius: 46px; padding: 11px;
  border: 1px solid #2b2b30;
  box-shadow: 0 2px 0 rgba(255,255,255,0.04) inset, 0 40px 80px -30px rgba(0,0,0,0.9), 0 0 0 1.5px rgba(0,0,0,0.6);
  position: relative; flex: none;
}
.phone::after { /* side button hint */
  content:""; position:absolute; right:-1.5px; top:170px; width:2.5px; height:64px;
  background:#26262b; border-radius: 2px;
}
.phone__screen {
  position: relative; width: 100%; height: 100%; border-radius: 38px; overflow: hidden; background: #000;
}
.phone__screen img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block;
  opacity: 0; transition: opacity 0.45s var(--ease-out);
}
.phone__screen img.on { opacity: 1; }

/* annotation markers */
.overlay { position: absolute; inset: 0; pointer-events: none; }
.mk {
  position: absolute; border: 2.5px solid var(--gold); border-radius: 9px;
  box-shadow: 0 0 0 3px rgba(198,169,107,0.16), 0 0 20px rgba(198,169,107,0.45);
  opacity: 0; transform: scale(0.96); animation: mkin 0.5s var(--ease-out) forwards;
}
.mk.round { border-radius: 999px; }
.mk::before { /* pulse ring */
  content:""; position:absolute; inset:-3px; border-radius: inherit; border: 2px solid var(--gold);
  opacity: 0; animation: mkpulse 2s ease-out infinite;
}
.mk__lab {
  position: absolute; white-space: nowrap; font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.04em; text-transform: uppercase; font-weight: 600;
  color: var(--bg); background: var(--gold); padding: 5px 9px; border-radius: 6px;
  box-shadow: 0 6px 16px -6px rgba(0,0,0,0.7);
}
.mk__lab.top { bottom: 100%; left: 50%; transform: translate(-50%, -9px); }
.mk__lab.bottom { top: 100%; left: 50%; transform: translate(-50%, 9px); }
.mk__lab.left { right: 100%; top: 50%; transform: translate(-9px, -50%); }
.mk__lab.right { left: 100%; top: 50%; transform: translate(9px, -50%); }
.mk.err { border-color: #E2574C; box-shadow: 0 0 0 3px rgba(226,87,76,0.16), 0 0 20px rgba(226,87,76,0.5); }
.mk.err::before { border-color: #E2574C; }
.mk.err .mk__lab { background: #E2574C; color: #fff; }

@keyframes mkin { to { opacity: 1; transform: scale(1); } }
@keyframes mkpulse { 0% { opacity: 0.7; transform: scale(1); } 100% { opacity: 0; transform: scale(1.22); } }

/* step content */
.step-col { max-width: 520px; }
.step-info { max-width: 480px; }
.step-info .crumb { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); margin-bottom: 18px; display:flex; align-items:center; gap:12px; }
.step-num { font-family: var(--serif); font-size: 64px; line-height: 1; color: var(--gold); font-weight: 400; display: block; margin-bottom: 14px; }
.step-info h3 { font-family: var(--serif); font-size: clamp(26px, 3vw, 34px); font-weight: 500; color: var(--ink); margin: 0 0 16px; line-height: 1.12; }
.step-info p { color: var(--fg-2); font-size: 17.5px; line-height: 1.65; margin: 0; }
.step-info p b { color: var(--ink); font-weight: 600; }
.step-info p .pf { font-family: var(--mono); color: var(--gold); font-size: 0.9em; }
.step-note {
  margin-top: 20px; display: flex; gap: 12px; align-items: flex-start;
  font-size: 14px; color: var(--fg-3); line-height: 1.5;
  border-top: 1px solid var(--rule); padding-top: 18px;
}
.step-note .ic { color: var(--gold); flex: none; margin-top: 1px; }

/* controls */
.controls { margin-top: 30px; padding-top: 24px; border-top: 1px solid var(--rule); }
.controls-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.nav-btn {
  display: inline-flex; align-items: center; gap: 9px; cursor: pointer;
  font-family: var(--sans); font-size: 14px; font-weight: 500;
  padding: 12px 20px; border-radius: var(--r-pill); border: 1px solid var(--rule-strong);
  background: transparent; color: var(--ink); transition: transform var(--dur-quick) var(--ease-snap), background var(--dur-quick), border-color var(--dur-quick);
}
.nav-btn:hover:not(:disabled) { transform: translateY(-1px); border-color: var(--ink); }
.nav-btn.primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.nav-btn:disabled { opacity: 0.32; cursor: default; }
.nav-btn svg { display:block; }
.counter { font-family: var(--mono); font-size: 13px; letter-spacing: 0.1em; color: var(--fg-3); margin-left: auto; }
.counter b { color: var(--gold); }

.dots { display: flex; gap: 9px; margin-top: 18px; flex-wrap: wrap; }
.dot-btn {
  width: 30px; height: 30px; border-radius: 50%; cursor: pointer; border: 1px solid var(--rule);
  background: transparent; color: var(--fg-3); font-family: var(--mono); font-size: 11px;
  display: flex; align-items: center; justify-content: center; transition: all var(--dur-quick);
  padding: 0;
}
.dot-btn:hover { border-color: var(--rule-strong); color: var(--ink); }
.dot-btn.active { background: var(--gold); color: var(--bg); border-color: var(--gold); font-weight: 600; }
.dot-btn.done { color: var(--gold); border-color: var(--rule-strong); }

/* verify-after callout under stepper */
.verify {
  margin-top: 46px; display: grid; grid-template-columns: auto 1fr; gap: 22px; align-items: start;
  padding: 30px 34px; border: 1px solid var(--rule-strong); border-radius: var(--r-lg);
  background: var(--surface-card);
}
.verify .ic { color: var(--gold); }
.verify h4 { font-family: var(--serif); font-size: 22px; font-weight: 500; color: var(--ink); margin: 0 0 8px; }
.verify p { margin: 0; color: var(--fg-2); font-size: 16px; line-height: 1.65; max-width: 700px; }
.verify p b { color: var(--ink); }

/* =================== ERROS =================== */
.err-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.err-card { padding: 28px; display: flex; gap: 18px; align-items: flex-start; }
.err-card .en { font-family: var(--serif); font-size: 30px; color: var(--gold); line-height: 1; flex: none; opacity: 0.85; }
.err-card h4 { font-family: var(--sans); font-size: 17px; font-weight: 600; color: var(--ink); margin: 0 0 8px; }
.err-card p { margin: 0; font-size: 14.5px; color: var(--fg-3); line-height: 1.6; }

/* =================== CONCLUSÃO =================== */
.resumo { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 44px; }
.resumo .r {
  padding: 28px 30px; border-radius: var(--r-lg); border: 1px solid var(--rule); background: var(--surface-card);
}
.resumo .r .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gold); margin-bottom: 14px; }
.resumo .r p { margin: 0; font-family: var(--serif); font-size: 22px; line-height: 1.35; color: var(--ink); font-weight: 400; }
.resumo .r p em { font-style: italic; color: var(--gold); }
.kicker-line {
  font-family: var(--serif); font-size: clamp(26px, 3.4vw, 38px); line-height: 1.25; color: var(--ink);
  max-width: 760px; font-weight: 400;
}
.kicker-line em { font-style: italic; color: var(--gold); }

/* =================== FOOTER =================== */
footer.site { border-top: 1px solid var(--rule); padding: 40px 0; margin-top: 20px; }
footer.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
footer.site .fb { display: flex; align-items: center; gap: 12px; }
footer.site .fb img { width: 30px; }
footer.site .fb b { font-family: var(--classical); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink); }
footer.site .fnote { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-3); }

/* =================== reveal =================== */
.rv { opacity: 0; transform: translateY(16px); transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out); }
.rv.in { opacity: 1; transform: none; }

/* =================== RESPONSIVE =================== */
@media (max-width: 940px) {
  .cols { grid-template-columns: 1fr; gap: 38px; }
  .opt-grid { grid-template-columns: 1fr; }
  .stepper { grid-template-columns: 1fr; gap: 34px; min-height: 0; justify-items: center; }
  .stage { order: -1; }
  .step-info { text-align: left; }
  .err-grid, .resumo { grid-template-columns: 1fr; }
  .dots { margin-left: 0; width: 100%; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .hero { padding: 60px 0 40px; }
  section.block { padding: 56px 0; }
  .phone { --pw: 270px; }
  .controls { gap: 14px; }
  .counter { width: 100%; order: 3; }
  .verify { grid-template-columns: 1fr; }
  .brand .wm span { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .mk, .mk::before { animation: none; opacity: 1; transform: none; }
  .rv { transition: none; opacity: 1; transform: none; }
}