/* =============================================
   FluxByte — Landing Page Stylesheet
   Designer: Layout limpo, comercial, confiável
   ============================================= */

/* ---- Reset & Base ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  color: #1A1A2E;
  background: #ffffff;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

/* ---- Tokens ---- */
:root {
  --blue:       #1A6BFF;
  --blue-dark:  #1254CC;
  --blue-light: #EBF1FF;
  --ink:        #1A1A2E;
  --ink-soft:   #3D3D52;
  --gray:       #6B6B80;
  --gray-light: #F2F3F7;
  --border:     #E2E4ED;
  --white:      #ffffff;
  --radius:     8px;
  --radius-lg:  14px;
  --shadow-sm:  0 1px 4px rgba(0,0,0,.07);
  --shadow-md:  0 4px 16px rgba(0,0,0,.10);
  --transition: 0.2s ease;
}

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.btn--primary:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--border);
}
.btn--ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.btn--lg {
  padding: 15px 30px;
  font-size: 1rem;
}

.btn--full {
  width: 100%;
  justify-content: center;
}

/* ---- Section Header ---- */
.section-header {
  max-width: 580px;
  margin-bottom: 44px;
}
.section-header h2 {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 12px;
  color: var(--ink);
}
.section-header p {
  color: var(--gray);
  font-size: 1.05rem;
}
.section-header--light h2 { color: var(--white); }
.section-header--light p  { color: rgba(255,255,255,.72); }

/* ---- Link Arrow ---- */
.link-arrow {
  color: var(--blue);
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}
.link-arrow:hover { gap: 8px; }

/* =============================================
   HEADER
   ============================================= */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(6px);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 68px;
}

.header__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
}

.header__nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color var(--transition);
}
.header__nav a:hover { color: var(--blue); }

.header__cta {
  margin-left: 12px;
  padding: 9px 18px;
  font-size: 0.875rem;
}

.header__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.header__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  padding: 80px 0 72px;
  background: var(--white);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero__tag {
  display: inline-block;
  background: var(--blue-light);
  color: var(--blue);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 4px;
  margin-bottom: 20px;
}

.hero__headline {
  font-size: 2.55rem;
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.7px;
  color: var(--ink);
  margin-bottom: 20px;
}

.hero__sub {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 480px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.hero__trust {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--gray);
  font-weight: 500;
}
.hero__trust .sep { color: var(--border); }

/* ---- Mockup WhatsApp ---- */
.mockup {
  display: flex;
  justify-content: center;
}

.mockup__phone {
  width: 280px;
  background: #1A1A2E;
  border-radius: 28px;
  padding: 12px;
  box-shadow: var(--shadow-md);
}

.mockup__screen {
  background: #ECE5DD;
  border-radius: 18px;
  padding: 16px 12px;
  min-height: 340px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.chat {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chat__bubble {
  max-width: 85%;
  padding: 9px 12px;
  border-radius: 12px;
  font-size: 0.78rem;
  line-height: 1.5;
  position: relative;
}

.chat__bubble--in {
  background: #ffffff;
  align-self: flex-start;
  border-bottom-left-radius: 3px;
  color: #1A1A2E;
}

.chat__bubble--out {
  background: #DCF8C6;
  align-self: flex-end;
  border-bottom-right-radius: 3px;
  color: #1A1A2E;
}

.chat__name {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 3px;
}

.chat__status {
  text-align: center;
  font-size: 0.68rem;
  color: #666;
  background: rgba(0,0,0,.06);
  border-radius: 20px;
  padding: 4px 10px;
  margin-top: 4px;
  align-self: center;
}

/* =============================================
   ABOUT
   ============================================= */
.about {
  padding: 72px 0 80px;
  background: var(--gray-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about__text h2 {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 16px;
  color: var(--ink);
}

.about__text p {
  color: var(--ink-soft);
  margin-bottom: 16px;
  font-size: 1rem;
}

.about__text .link-arrow { margin-top: 8px; }

.about__numbers {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.stat strong {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: -1px;
  margin-bottom: 4px;
}

.stat span {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.5;
}

/* =============================================
   PROBLEMS
   ============================================= */
.problems {
  padding: 76px 0 84px;
}

.problems__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  padding: 28px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.problem-card:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-sm);
}

/* Quebrar simetria visual dos cards de problema */
.problem-card:nth-child(2) { padding-top: 32px; }
.problem-card:nth-child(5) { padding-top: 24px; padding-bottom: 32px; }

.problem-card__icon {
  width: 44px;
  height: 44px;
  background: var(--blue-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  margin-bottom: 16px;
}

.problem-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--ink);
  line-height: 1.4;
}

.problem-card p {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.6;
}

/* =============================================
   SERVICES
   ============================================= */
.services {
  padding: 80px 0 72px;
  background: var(--gray-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.services__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
}

.service-item {
  padding: 32px 28px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.service-item:nth-child(2n) { border-right: none; }
.service-item:nth-last-child(-n+2) { border-bottom: none; }

.service-item:hover { background: var(--blue-light); }

.service-item__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 12px;
}

.service-item__num {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--blue);
  background: var(--blue-light);
  padding: 3px 7px;
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 3px;
  letter-spacing: 0.5px;
}

.service-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
}

/* Variar levemente o peso dos títulos de serviço */
.service-item:nth-child(3) h3,
.service-item:nth-child(6) h3 { font-weight: 700; }
.service-item:nth-child(2) h3 { font-size: 0.98rem; }

.service-item p {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.65;
}

/* =============================================
   NICHES
   ============================================= */
.niches {
  padding: 80px 0;
  background: var(--ink);
}

.niches .section-header { margin-bottom: 44px; }

.niches__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.niche-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  transition: background var(--transition), border-color var(--transition);
}

.niche-card:hover {
  background: rgba(26,107,255,.12);
  border-color: rgba(26,107,255,.35);
}

/* Alturas ligeiramente diferentes para quebrar uniformidade */
.niche-card:nth-child(2) { padding-top: 32px; }
.niche-card:nth-child(4) { padding-bottom: 32px; }

.niche-card__icon {
  color: var(--blue);
  margin-bottom: 16px;
}

.niche-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
  line-height: 1.3;
}

.niche-card p {
  font-size: 0.82rem;
  color: rgba(255,255,255,.55);
  line-height: 1.6;
}

/* =============================================
   HOW IT WORKS
   ============================================= */
.how {
  padding: 76px 0 80px;
}

.how__steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
}

.step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 16px;
}

.step__num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  flex-shrink: 0;
  /* Leve variação de tamanho por step via nth-child */
}

.step:nth-child(1) .step__num { width: 46px; height: 46px; }
.step:nth-child(3) .step__num { width: 42px; height: 42px; }
.step:nth-child(5) .step__num { width: 44px; height: 44px; }
.step:nth-child(7) .step__num { width: 46px; height: 46px; }

.step__content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--ink);
}

.step__content p {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.65;
}

.step__connector {
  flex-shrink: 0;
  width: 40px;
  height: 2px;
  background: var(--border);
  margin-top: 24px;
  position: relative;
}

.step__connector::after {
  content: '';
  position: absolute;
  right: -5px;
  top: -4px;
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 7px solid var(--border);
}

/* =============================================
   FLOW EXAMPLE
   ============================================= */
.flow-example {
  padding: 80px 0;
  background: var(--gray-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.flow-example__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.flow-example__text h2 {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 16px;
  color: var(--ink);
}

.flow-example__text > p {
  color: var(--ink-soft);
  margin-bottom: 24px;
}

.flow-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.flow-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.flow-list__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
  margin-top: 7px;
}

.flow-example__note {
  font-size: 0.875rem;
  color: var(--gray);
  font-style: italic;
}

/* Flow Diagram */
.flow-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.flow-node {
  width: 100%;
  max-width: 280px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 20px;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-soft);
  box-shadow: var(--shadow-sm);
}

.flow-node--start {
  border-color: var(--blue);
  color: var(--blue);
  font-weight: 600;
}

.flow-node--end {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
  font-weight: 600;
}

.flow-arrow {
  color: var(--gray);
  font-size: 1.2rem;
  line-height: 1;
  padding: 4px 0;
}

/* =============================================
   CREDIBILITY
   ============================================= */
.credibility {
  padding: 80px 0;
}

.results__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.result-item {
  padding: 28px 24px;
  border-left: 3px solid var(--blue);
  background: var(--gray-light);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.result-item:nth-child(2) {
  padding-top: 32px;
  background: #FAFBFF;
}

.result-item:nth-child(3) {
  padding-bottom: 32px;
}

.result-item__label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--blue);
  margin-bottom: 12px;
}

.result-item p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.65;
  margin-bottom: 12px;
  font-style: italic;
}

.result-item__sig {
  font-size: 0.78rem;
  color: var(--gray);
  display: block;
}

/* =============================================
   CONTACT / CTA
   ============================================= */
.contact {
  padding: 80px 0;
  background: var(--ink);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact__text h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.25;
}

.contact__text > p {
  color: rgba(255,255,255,.65);
  margin-bottom: 28px;
  font-size: 1rem;
}

.contact__or {
  font-size: 0.82rem;
  color: rgba(255,255,255,.4);
  margin-top: 16px;
  margin-bottom: 0 !important;
}

/* Form */
.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.form-group .optional {
  font-weight: 400;
  color: var(--gray);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--ink);
  background: var(--white);
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: #AAABB8; }

.form-note {
  font-size: 0.78rem;
  color: var(--gray);
  text-align: center;
}

.form-success {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px 28px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.form-success h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
}

.form-success p {
  color: var(--gray);
  font-size: 0.9rem;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: #0F0F1E;
  color: rgba(255,255,255,.65);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding: 56px 24px 40px;
}

.footer__brand p {
  font-size: 0.875rem;
  line-height: 1.6;
  margin-top: 16px;
  max-width: 260px;
}

.footer__brand svg { margin-bottom: 0; }

.footer__contact h4,
.footer__links h4 {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--white);
  margin-bottom: 16px;
}

.footer__contact a,
.footer__links a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(255,255,255,.55);
  margin-bottom: 10px;
  transition: color var(--transition);
}

.footer__contact a:hover,
.footer__links a:hover { color: var(--white); }

.footer__links a { display: block; }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
}

.footer__bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,.3);
  text-align: center;
}

/* =============================================
   CREDIBILITY — ajuste de ritmo
   ============================================= */
.credibility {
  padding: 76px 0 80px;
}

/* =============================================
   WHATSAPP FLOAT
   ============================================= */
.wa-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  box-shadow: 0 4px 16px rgba(37,211,102,.4);
  z-index: 200;
  transition: transform var(--transition), box-shadow var(--transition);
}

.wa-float:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(37,211,102,.5);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .niches__grid { grid-template-columns: repeat(3, 1fr); }
  .niches .niche-card:nth-child(4),
  .niches .niche-card:nth-child(5) { }
}

@media (max-width: 900px) {
  .hero__inner,
  .about__inner,
  .flow-example__inner,
  .contact__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__visual { order: -1; }

  .mockup__phone { width: 240px; }

  .problems__grid { grid-template-columns: repeat(2, 1fr); }

  .services__list { grid-template-columns: 1fr; }
  .service-item { border-right: none !important; }
  .service-item:nth-last-child(-n+2) { border-bottom: 1px solid var(--border) !important; }
  .service-item:last-child { border-bottom: none !important; }

  .niches__grid { grid-template-columns: repeat(2, 1fr); }

  .how__steps {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }
  .step { flex-direction: row; text-align: left; align-items: flex-start; }
  .step__num { margin-bottom: 0; margin-right: 0; flex-shrink: 0; }
  .step__connector { width: 2px; height: 32px; margin-top: 0; margin-left: 24px; }
  .step__connector::after {
    right: auto;
    bottom: -5px;
    top: auto;
    left: -4px;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 7px solid var(--border);
    border-bottom: none;
  }

  .results__grid { grid-template-columns: 1fr; }

  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .header__nav { display: none; }
  .header__cta { display: none; }
  .header__hamburger { display: flex; }

  .header__nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 24px;
    gap: 16px;
    z-index: 99;
  }

  .header__nav.is-open + .header__cta {
    display: flex;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    z-index: 98;
    margin: 0;
    border-radius: 0;
    justify-content: center;
    padding: 14px;
    top: auto;
  }

  .hero { padding: 48px 0 56px; }
  .hero__headline { font-size: 1.9rem; }
  .hero__sub { font-size: 1rem; }

  .section-header h2 { font-size: 1.6rem; }

  .problems__grid { grid-template-columns: 1fr; }

  .niches__grid { grid-template-columns: 1fr 1fr; }

  .footer__inner { grid-template-columns: 1fr; gap: 32px; }

  .wa-float { bottom: 20px; right: 20px; width: 50px; height: 50px; }

  .contact-form { padding: 24px 20px; }
}

@media (max-width: 400px) {
  .hero__headline { font-size: 1.65rem; }
  .niches__grid { grid-template-columns: 1fr; }
}