/* =========================================================
   best. — LP2 · formulário de diagnóstico (step by step)
   Identidade best. (Ink · Paper · Lime · Signal / Archivo Black
   + Space Grotesk + JetBrains Mono). Lime e Signal só em massa
   sólida — nunca degradê, nunca alpha.
   ========================================================= */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink:        #0A0A0A;
  --paper:      #F4F1EA;
  --lime:       #E8FF3A;
  --signal:     #FF3B1F;

  --surface:    #FFFFFF;
  --surface-2:  #12110F;
  --on-dark:      #F4F1EA;
  --on-dark-mut:  #9C978C;
  --on-dark-cap:  #C9C4B8;
  --muted:      #5F5850;
  --line:       rgba(244, 241, 234, 0.14);
  --line-soft:  rgba(244, 241, 234, 0.08);
  --hair-dark:  rgba(244, 241, 234, 0.14);

  --r-lg: 22px;
  --r:    16px;
  --r-sm: 12px;
  --r-pill: 999px;

  --font-display: "Archivo Black", "Arial Black", system-ui, sans-serif;
  --font-text:    "Space Grotesk", -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

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

body {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--ink);
  color: var(--on-dark);
  font-family: var(--font-text);
  font-size: 17px;
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
}

::selection { background: var(--lime); color: var(--ink); }

.dot {
  display: inline-block;
  width: 0.26em;
  height: 0.26em;
  border-radius: 2px;
  background: var(--signal);
  margin-left: 0.06em;
  vertical-align: baseline;
}

/* ---------- chrome técnico ---------- */
.chrome {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px clamp(18px, 5vw, 48px);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--on-dark-mut);
}
.chrome span:last-child { text-align: right; }
@media (max-width: 720px) { .chrome span:last-child { display: none; } }

/* ---------- barra de progresso ---------- */
.bar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 4px;
  width: 100%;
  background: var(--line-soft);
}
.bar__fill {
  height: 100%;
  width: 0%;
  background: var(--lime);
  transition: width 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- masthead / logotipo ---------- */
.mast {
  width: 100%;
  max-width: 760px;
  margin-inline: auto;
  padding: clamp(18px, 4vw, 30px) clamp(20px, 6vw, 48px) 0;
}
.mast__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.mast__mark {
  display: block;
  width: 26px;
  height: 26px;
  border-radius: 6px;
}
.mast__word {
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1;
  text-transform: lowercase;
  color: var(--on-dark);
}
.mast__word .dot { width: 0.22em; height: 0.22em; }

/* ---------- palco ---------- */
.stage {
  flex: 1;
  width: 100%;
  max-width: 760px;
  margin-inline: auto;
  padding: clamp(28px, 7vw, 72px) clamp(20px, 6vw, 48px) clamp(32px, 6vw, 64px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.quiz { position: relative; }

/* ---------- step ---------- */
.step { display: none; }
.step.is-active {
  display: block;
  animation: stepin 0.42s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes stepin {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.step__eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 16px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lime);
}
.step__eyebrow-bar { width: 26px; height: 3px; border-radius: 999px; background: var(--signal); flex: none; }
.step__count { color: var(--lime); }

.step__q {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.5rem, 4.6vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-transform: lowercase;
  overflow-wrap: break-word;
}
.step--intro .step__q {
  font-size: clamp(1.7rem, 5.6vw, 3rem);
  line-height: 1.06;
}

.step__desc {
  margin-top: 14px;
  max-width: 52ch;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--on-dark-cap);
}

.step__lead {
  margin-top: 20px;
  max-width: 54ch;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 1.03rem;
  line-height: 1.6;
  color: var(--on-dark-cap);
}
.step__warn {
  padding: 14px 16px;
  border-left: 3px solid var(--signal);
  background: var(--surface-2);
  color: var(--on-dark);
  font-size: 0.96rem;
}
.step__warn strong { color: #fff; font-weight: 700; }

/* ---------- campos ---------- */
.step__field { margin-top: 26px; }

.step__field input[type="text"],
.step__field input[type="tel"],
.step__field textarea {
  width: 100%;
  padding: 15px 4px;
  font: 400 clamp(1.15rem, 3.4vw, 1.5rem)/1.35 var(--font-text);
  color: #fff;
  background: transparent;
  border: 0;
  border-bottom: 2px solid var(--line);
  border-radius: 0;
  transition: border-color 0.16s ease;
}
.step__field textarea {
  padding: 14px 4px;
  font-size: clamp(1.05rem, 3vw, 1.25rem);
  resize: vertical;
  min-height: 108px;
}
.step__field input::placeholder,
.step__field textarea::placeholder { color: #5c574e; }
.step__field input:focus-visible,
.step__field textarea:focus-visible {
  outline: none;
  border-bottom-color: var(--lime);
}
.step__field input[aria-invalid="true"],
.step__field textarea[aria-invalid="true"] {
  border-bottom-color: var(--signal);
}

/* ---------- múltipla escolha ---------- */
.opts {
  margin-top: 26px;
  display: grid;
  gap: 12px;
}
.opt {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px 18px;
  text-align: left;
  font-family: var(--font-text);
  font-size: clamp(0.98rem, 2.6vw, 1.08rem);
  font-weight: 600;
  line-height: 1.35;
  color: var(--on-dark);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: border-color 0.14s ease, background 0.14s ease, color 0.14s ease, transform 0.1s ease;
}
.opt:hover { border-color: var(--on-dark-mut); }
.opt:active { transform: scale(0.99); }
.opt:focus-visible { outline: none; border-color: var(--lime); box-shadow: 0 0 0 3px rgba(232, 255, 58, 0.28); }
.opt__k {
  flex: none;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--on-dark-mut);
  transition: inherit;
}
.opt.is-sel {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}
.opt.is-sel .opt__k {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--lime);
}

/* ---------- erro ---------- */
.step__err {
  margin-top: 14px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--signal);
}

/* ---------- navegação ---------- */
.step__nav {
  margin-top: 34px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.step__back {
  padding: 12px 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--on-dark-mut);
  background: none;
  border: 0;
  cursor: pointer;
  transition: color 0.14s ease;
}
.step__back:hover { color: var(--on-dark); }
.step__back:focus-visible { outline: 2px solid var(--lime); outline-offset: 3px; }

.step__next {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--lime);
  border: 1px solid var(--ink);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease;
}
.step__next:hover { transform: translateY(-2px); background: #fff; }
.step__next:focus-visible { outline: 2px solid var(--lime); outline-offset: 3px; }
.step__next[disabled] { cursor: progress; opacity: 0.72; transform: none; }

.step__next-spin {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(10, 10, 10, 0.28);
  border-top-color: var(--ink);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.step__next.is-loading .step__next-label { opacity: 0.55; }
.step__next.is-loading .step__next-spin { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- honeypot ---------- */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- dica de teclado ---------- */
.hintbar {
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--on-dark-mut);
}
.hintbar kbd {
  font-family: inherit;
  font-size: 10.5px;
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--on-dark-cap);
}
.hintbar.is-hidden { visibility: hidden; }

/* ---------- rodapé ---------- */
.foot {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
  max-width: 760px;
  margin-inline: auto;
  width: 100%;
  padding: 22px clamp(20px, 6vw, 48px) 28px;
  border-top: 1px solid var(--hair-dark);
}
.foot__by {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35em;
  font-size: 0.9rem;
  color: var(--on-dark-mut);
}
.foot__logo {
  font-family: var(--font-display);
  font-size: 1.15em;
  text-transform: lowercase;
  color: var(--on-dark);
}
.foot__by .foot__logo .dot { width: 0.24em; height: 0.24em; }
.foot__tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--on-dark-mut);
}

@media (max-width: 540px) {
  body { font-size: 16px; }
  .step__nav { gap: 10px 16px; }
  .step__next { flex: 1; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}