/* ============================================================
   Verafy — Landing. Tema âmbar (marca do produto), claro/escuro.
   ============================================================ */

:root {
  --amber-50:  #FFFBEB;
  --amber-300: #FCD34D;
  --amber-400: #FBBF24;
  --amber-500: #F59E0B;
  --amber-600: #D97706;
  --grad: linear-gradient(135deg, #FBBF24 0%, #D97706 100%);
  --grad-soft: linear-gradient(135deg, rgba(251,191,36,.16), rgba(217,119,6,.16));
  --on-accent: #1A1206;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', monospace;

  --maxw: 1140px;
  --radius: 16px;
  --radius-sm: 10px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

:root[data-theme="dark"] {
  --bg: #0E1117;
  --bg-2: #0B0E13;
  --surface: #161B22;
  --elevated: #1C222B;
  --text: #E7ECF3;
  --text-2: #9BA6B2;
  --border: rgba(255,255,255,.09);
  --border-2: rgba(255,255,255,.14);
  --shadow: 0 20px 50px -20px rgba(0,0,0,.7);
  --glow: rgba(245,158,11,.20);
  --card: rgba(255,255,255,.025);
}
:root[data-theme="light"] {
  --bg: #F4F5F7;
  --bg-2: #ECEEF1;
  --surface: #FFFFFF;
  --elevated: #FFFFFF;
  --text: #14181E;
  --text-2: #5B6673;
  --border: rgba(15,23,42,.10);
  --border-2: rgba(15,23,42,.16);
  --shadow: 0 20px 45px -22px rgba(30,41,59,.30);
  --glow: rgba(245,158,11,.18);
  --card: rgba(255,255,255,.7);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background .4s var(--ease), color .4s var(--ease);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1,h2,h3 { line-height: 1.1; letter-spacing: -.02em; font-weight: 800; }
::selection { background: var(--amber-400); color: var(--on-accent); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.grad {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- brilho que segue o cursor ---------- */
.cursor-glow {
  position: fixed; top: 0; left: 0; width: 460px; height: 460px; border-radius: 50%;
  pointer-events: none; z-index: 1; transform: translate(-50%,-50%);
  background: radial-gradient(circle, var(--glow), transparent 60%);
  opacity: 0; transition: opacity .3s; mix-blend-mode: screen; will-change: transform;
}
:root[data-theme="light"] .cursor-glow { mix-blend-mode: multiply; }
@media (hover: hover) and (pointer: fine) { .cursor-glow.on { opacity: 1; } }

/* ---------- botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: inherit; font-weight: 600; font-size: 15px; cursor: pointer;
  padding: 14px 26px; border-radius: 999px; border: 1px solid transparent;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, color .25s;
  white-space: nowrap; will-change: transform;
}
.btn--sm { padding: 10px 18px; font-size: 14px; }
.btn--block { width: 100%; padding: 16px; font-size: 16px; }
.btn--primary {
  background: var(--grad); color: var(--on-accent);
  box-shadow: 0 10px 30px -8px rgba(245,158,11,.5);
}
.btn--primary:hover { box-shadow: 0 14px 40px -8px rgba(245,158,11,.65); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--border-2); }
.btn--ghost:hover { background: var(--card); border-color: var(--amber-500); }

/* ---------- NAV ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: background .3s, box-shadow .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border); box-shadow: 0 8px 30px -20px rgba(0,0,0,.5);
}
.nav__inner { max-width: var(--maxw); margin: 0 auto; padding: 16px 24px; display: flex; align-items: center; gap: 24px; }
.nav__brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; letter-spacing: -.02em; }
.nav__shield { filter: drop-shadow(0 2px 8px rgba(245,158,11,.35)); }
.nav__links { display: flex; gap: 28px; margin-left: 12px; }
.nav__links a { color: var(--text-2); font-size: 15px; font-weight: 500; transition: color .2s; position: relative; }
.nav__links a:hover { color: var(--text); }
.nav__links a::after { content:''; position:absolute; left:0; bottom:-6px; width:0; height:2px; background:var(--grad); transition:width .25s var(--ease); border-radius:2px; }
.nav__links a:hover::after { width: 100%; }
.nav__actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.theme-toggle {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border-2);
  background: var(--card); color: var(--text); cursor: pointer; display: grid; place-items: center;
  transition: border-color .2s, transform .2s;
}
.theme-toggle:hover { border-color: var(--amber-500); transform: rotate(-12deg); }
:root[data-theme="dark"] .theme-toggle__sun { display: block; }
:root[data-theme="dark"] .theme-toggle__moon { display: none; }
:root[data-theme="light"] .theme-toggle__sun { display: none; }
:root[data-theme="light"] .theme-toggle__moon { display: block; }
.nav__burger { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px; border: 1px solid var(--border-2); border-radius: 10px; background: var(--card); cursor: pointer; align-items: center; justify-content: center; }
.nav__burger span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s; }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- HERO ---------- */
.hero { position: relative; padding: 160px 0 90px; overflow: hidden; }
.hero__aurora {
  position: absolute; inset: -20% -10% auto -10%; height: 720px; z-index: 0; pointer-events: none;
  background:
    radial-gradient(closest-side at var(--mx,70%) 20%, rgba(245,158,11,.22), transparent 70%),
    radial-gradient(closest-side at 15% 0%, rgba(217,119,6,.14), transparent 70%);
  filter: blur(10px);
}
.hero__grid {
  position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px; padding: 7px 14px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--border-2); font-size: 13.5px; font-weight: 600; color: var(--text-2);
  backdrop-filter: blur(6px);
}
.eyebrow__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--amber-400); box-shadow: 0 0 0 4px rgba(245,158,11,.2); animation: pulse 2.4s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px rgba(245,158,11,0); } }
.hero__title { font-size: clamp(40px, 6.4vw, 76px); font-weight: 900; margin: 22px 0 20px; }
.hero__sub { font-size: clamp(16px, 1.6vw, 19px); color: var(--text-2); max-width: 540px; }
.hero__sub strong { color: var(--text); font-weight: 600; }
.hero__ctas { display: flex; gap: 14px; margin: 32px 0 26px; flex-wrap: wrap; }
.hero__trust { list-style: none; display: flex; flex-wrap: wrap; gap: 18px 26px; }
.hero__trust li { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-2); font-weight: 500; }
.hero__trust svg { color: var(--amber-500); }

/* demo card */
.hero__demo { position: relative; z-index: 2; }
.chat {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden; transform: perspective(1200px) rotateY(-6deg) rotateX(2deg);
  transition: transform .5s var(--ease);
}
.hero__demo:hover .chat { transform: perspective(1200px) rotateY(0) rotateX(0); }
.chat__bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px; border-bottom: 1px solid var(--border); background: var(--elevated); }
.chat__dot { width: 11px; height: 11px; border-radius: 50%; background: var(--border-2); }
.chat__dot:nth-child(1) { background: #ff5f57; } .chat__dot:nth-child(2) { background: #febc2e; } .chat__dot:nth-child(3) { background: #28c840; }
.chat__title { margin-left: 8px; font-size: 12.5px; color: var(--text-2); font-family: var(--font-mono); }
/* Altura FIXA de propósito: a demo digita/apaga texto em loop, mudando o
   conteúdo a cada frame. Sem altura fixa, a caixa cresce e encolhe, e o
   align-items:center do hero re-centraliza o card sem parar — ele "treme". */
.chat__body { padding: 22px; height: 340px; overflow: hidden; }
.chat__label { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-2); font-weight: 700; }
.chat__q { margin-bottom: 20px; }
.chat__qtext { font-size: 16px; font-weight: 600; margin-top: 6px; }
.chat__atext { font-size: 15px; margin: 6px 0 14px; color: var(--text); }
/* Crossfade: pergunta e resposta aparecem inteiras e trocam com transição
   suave — sem reescrever letra a letra (que dava a sensação de "piscando"). */
.chat__q, .chat__a { transition: opacity .45s var(--ease), transform .45s var(--ease); }
.chat__body.out .chat__q, .chat__body.out .chat__a { opacity: 0; transform: translateY(10px); }
.citation {
  display: inline-flex; align-items: center; gap: 9px; padding: 9px 13px; border-radius: var(--radius-sm);
  background: var(--grad-soft); border: 1px solid rgba(245,158,11,.35); font-size: 13px; font-weight: 600;
  color: var(--text); font-family: var(--font-mono);
}
.citation svg { color: var(--amber-500); }
.citation__meta { color: var(--text-2); font-weight: 500; font-size: 12px; }
.confidence { display: flex; align-items: center; gap: 10px; margin-top: 16px; font-size: 12.5px; color: var(--text-2); }
.confidence__bar { flex: 1; max-width: 130px; height: 6px; border-radius: 3px; background: var(--border); overflow: hidden; }
.confidence__bar i { display: block; height: 100%; width: 0; background: var(--grad); border-radius: 3px; transition: width 1.2s var(--ease); }
.confidence__bar.fill i { width: 88%; }
.confidence__val { color: var(--amber-600); font-weight: 700; }

.hero__scroll { text-align: center; margin-top: 64px; color: var(--text-2); font-size: 12.5px; position: relative; z-index: 2; }
.hero__mouse { width: 24px; height: 38px; border: 2px solid var(--border-2); border-radius: 14px; margin: 12px auto 0; position: relative; }
.hero__mouse i { position: absolute; top: 7px; left: 50%; transform: translateX(-50%); width: 4px; height: 7px; border-radius: 2px; background: var(--amber-500); animation: scrolldot 1.8s infinite; }
@keyframes scrolldot { 0%{opacity:0;transform:translate(-50%,0)} 40%{opacity:1} 80%{opacity:0;transform:translate(-50%,12px)} }

/* ---------- STATS ---------- */
.stats { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--bg-2); }
.stats__inner { max-width: var(--maxw); margin: 0 auto; padding: 40px 24px; display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.stat { text-align: center; }
.stat__num { font-size: clamp(34px,4vw,48px); font-weight: 900; font-family: var(--font-mono); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat__suf { font-size: 26px; font-weight: 800; color: var(--amber-500); }
.stat p { font-size: 13.5px; color: var(--text-2); margin-top: 4px; }

/* ---------- seções ---------- */
.section { padding: 100px 0; }
.section__head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section__head h2 { font-size: clamp(28px,3.6vw,42px); margin-top: 14px; }
.section__lead { color: var(--text-2); margin-top: 16px; font-size: 17px; }
.tag {
  display: inline-block; padding: 6px 14px; border-radius: 999px; font-size: 12.5px; font-weight: 700;
  letter-spacing: .04em; text-transform: uppercase; color: var(--amber-600);
  background: var(--grad-soft); border: 1px solid rgba(245,158,11,.28);
}

.problema__grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.pcard { padding: 30px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--border); transition: border-color .3s, transform .3s; }
.pcard:hover { border-color: var(--border-2); transform: translateY(-4px); }
.pcard h3 { font-size: 20px; margin-bottom: 10px; }
.pcard p { color: var(--text-2); font-size: 15px; }

.steps { list-style: none; display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; counter-reset: s; }
.step { position: relative; padding: 34px 28px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); overflow: hidden; }
.step::before { content:''; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .5s var(--ease); }
.step.in::before { transform: scaleX(1); }
.step__num { font-family: var(--font-mono); font-size: 15px; font-weight: 700; color: var(--amber-500); background: var(--grad-soft); width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 18px; }
.step h3 { font-size: 22px; margin-bottom: 10px; }
.step p { color: var(--text-2); font-size: 15px; }

.features { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.feature { padding: 30px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--border); transition: transform .3s var(--ease), border-color .3s, box-shadow .3s; }
.feature:hover { transform: translateY(-6px); border-color: rgba(245,158,11,.4); box-shadow: 0 20px 40px -24px rgba(245,158,11,.4); }
.feature__icon { width: 50px; height: 50px; border-radius: 13px; background: var(--grad-soft); display: grid; place-items: center; color: var(--amber-500); margin-bottom: 18px; }
.feature__icon svg { width: 24px; height: 24px; }
.feature h3 { font-size: 19px; margin-bottom: 8px; }
.feature p { color: var(--text-2); font-size: 14.5px; }

.confianca__panel { max-width: 860px; margin: 0 auto; text-align: center; padding: 60px 40px; border-radius: 24px; background: var(--surface); border: 1px solid var(--border); position: relative; overflow: hidden; }
.confianca__panel::before { content:''; position: absolute; inset: 0; background: radial-gradient(closest-side at 50% -10%, rgba(245,158,11,.14), transparent 70%); }
.confianca__panel > * { position: relative; }
.confianca__panel h2 { font-size: clamp(26px,3.4vw,40px); margin: 16px 0; }
.confianca__panel p { color: var(--text-2); font-size: 17px; max-width: 660px; margin: 0 auto; }
.confianca__panel em { color: var(--text); font-style: normal; font-weight: 600; }
.confianca__quote { margin-top: 34px; }
.confianca__quote p { font-size: clamp(22px,3vw,30px); font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; letter-spacing: -.02em; }
.confianca__quote span { color: var(--text-2); font-size: 14px; }

.chips { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.chip { padding: 12px 22px; border-radius: 999px; background: var(--card); border: 1px solid var(--border); font-weight: 600; font-size: 15px; transition: .25s var(--ease); cursor: default; }
.chip:hover { background: var(--grad); color: var(--on-accent); border-color: transparent; transform: translateY(-3px); }

.seg__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.seg__list { list-style: none; display: grid; gap: 16px; }
.seg__list li { padding: 18px 20px; border-radius: var(--radius-sm); background: var(--card); border: 1px solid var(--border); font-size: 15px; color: var(--text-2); }
.seg__list strong { color: var(--text); display: block; margin-bottom: 2px; }

/* ---------- CTA + FORM ---------- */
.cta { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: start; padding: 56px; border-radius: 26px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); position: relative; overflow: hidden; }
.cta::before { content:''; position:absolute; inset: -40% 40% auto -20%; height: 400px; background: radial-gradient(closest-side, rgba(245,158,11,.16), transparent 70%); pointer-events:none; }
.cta__copy { position: relative; }
.cta__copy h2 { font-size: clamp(26px,3.2vw,38px); margin: 14px 0 16px; }
.cta__copy p { color: var(--text-2); font-size: 16px; }
.cta__points { list-style: none; margin-top: 22px; display: grid; gap: 12px; }
.cta__points li { position: relative; padding-left: 30px; color: var(--text); font-size: 15px; }
.cta__points li::before { content:'✓'; position: absolute; left: 0; top: -1px; width: 20px; height: 20px; border-radius: 6px; background: var(--grad); color: var(--on-accent); font-weight: 800; font-size: 12px; display: grid; place-items: center; }

.form { position: relative; display: grid; gap: 16px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 7px; }
.field > span { font-size: 13px; font-weight: 600; color: var(--text-2); }
.field input, .field select, .field textarea {
  font-family: inherit; font-size: 15px; padding: 13px 14px; border-radius: var(--radius-sm);
  background: var(--bg); border: 1px solid var(--border-2); color: var(--text); width: 100%; transition: border-color .2s, box-shadow .2s;
}
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--amber-500); box-shadow: 0 0 0 4px rgba(245,158,11,.16); }
.field input.invalid, .field select.invalid { border-color: #ef4444; box-shadow: 0 0 0 4px rgba(239,68,68,.14); }
.form__note { font-size: 12px; color: var(--text-2); text-align: center; }
.form__status { font-size: 14px; text-align: center; padding: 0; max-height: 0; overflow: hidden; transition: max-height .3s, padding .3s; border-radius: var(--radius-sm); }
.form__status.show { max-height: 120px; padding: 14px; }
.form__status.ok { background: rgba(40,200,100,.12); color: #16a34a; border: 1px solid rgba(40,200,100,.3); }
.form__status.err { background: rgba(239,68,68,.1); color: #ef4444; border: 1px solid rgba(239,68,68,.3); }

/* ---------- FOOTER ---------- */
.footer { border-top: 1px solid var(--border); padding: 44px 0; background: var(--bg-2); }
.footer__inner { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; justify-content: space-between; }
.footer__brand { display: flex; align-items: center; gap: 12px; }
.footer__brand strong { display: block; font-size: 16px; }
.footer__brand span { font-size: 13px; color: var(--text-2); }
.footer__links { display: flex; gap: 24px; }
.footer__links a { color: var(--text-2); font-size: 14px; transition: color .2s; }
.footer__links a:hover { color: var(--amber-500); }
.footer__copy { color: var(--text-2); font-size: 13px; width: 100%; text-align: center; padding-top: 20px; border-top: 1px solid var(--border); margin-top: 8px; }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .cursor-glow, .hero__mouse i, .eyebrow__dot { display: none; }
  /* a demo ainda troca de exemplo, mas só com fade — sem deslize. */
  .chat__q, .chat__a { transition: opacity .4s linear; }
  .chat__body.out .chat__q, .chat__body.out .chat__a { transform: none; }
}

/* ---------- responsivo ---------- */
@media (max-width: 940px) {
  .hero__grid, .seg__grid, .cta { grid-template-columns: 1fr; }
  .hero__demo { max-width: 460px; }
  .chat { transform: none; }
  .problema__grid, .steps, .features { grid-template-columns: 1fr 1fr; }
  .stats__inner { grid-template-columns: 1fr 1fr; gap: 32px 16px; }
  .cta { padding: 36px; }
}
@media (max-width: 720px) {
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .nav__links.open {
    display: flex; position: absolute; top: 72px; left: 16px; right: 16px; flex-direction: column;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; gap: 4px; box-shadow: var(--shadow);
  }
  .nav__links.open a { padding: 12px; }
  .nav .btn--sm { display: none; }
  .section { padding: 72px 0; }
  .problema__grid, .steps, .features, .form__row { grid-template-columns: 1fr; }
  .confianca__panel { padding: 40px 24px; }
}
@media (max-width: 420px) { .stats__inner { grid-template-columns: 1fr; } }