/* ===========================================================
   ETER BUSINESS SOLUTIONS — Design tokens
   =========================================================== */
:root{
  /* Cor — extraída/derivada do logo (indigo do spiral) */
  --ink:        #1A1A2E;   /* texto principal */
  --ink-soft:   #5B5B78;   /* texto secundário */
  --primary:    #4A4768;   /* indigo do logo — secções, títulos */
  --primary-dk: #322F4C;   /* indigo mais escuro — hero bg */
  --accent:     #3450E0;   /* azul vivo — CTAs, links, foco */
  --accent-soft:#E7EAFB;   /* azul muito claro — fundos de destaque */
  --bg:         #F7F7FB;   /* fundo geral, branco-frio */
  --bg-alt:     #EFEFF7;   /* fundo alternado de secção */
  --line:       #DEDEEA;   /* divisores */
  --white:      #FFFFFF;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  --max: 1120px;
  --radius: 14px;
  --ease: cubic-bezier(.16,.84,.44,1);
}

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

html{ scroll-behavior:smooth; }

body{
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

h1, h2, h3{
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.08;
}

h2{ font-size: clamp(1.9rem, 3.4vw, 2.7rem); }
h3{ font-size: 1.25rem; }

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5em;
  font-family: var(--font-body);
  font-weight:600;
  font-size:.78rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.eyebrow::before{
  content:'';
  width:6px; height:6px;
  border-radius:50%;
  background: var(--accent);
  display:inline-block;
}

::selection{ background: var(--accent-soft); color: var(--primary-dk); }

:focus-visible{
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* subtle grain overlay for texture, avoids flat AI-default look */
.grain{
  position:fixed; inset:0;
  pointer-events:none;
  z-index: 999;
  opacity: .035;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: .9rem 1.7rem;
  border-radius: 999px;
  font-weight:600;
  font-size:.95rem;
  border: 1.5px solid transparent;
  cursor:pointer;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .25s, color .25s, border-color .25s;
}
.btn--primary{
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 10px 24px -8px rgba(52,80,224,.55);
}
.btn--primary:hover{
  transform: translateY(-2px);
  box-shadow: 0 16px 30px -8px rgba(52,80,224,.6);
}
.btn--ghost{
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn--ghost:hover{ border-color: var(--accent); color: var(--accent); }
.btn--block{ width:100%; }

/* ===========================================================
   NAV
   =========================================================== */
.nav{
  position: fixed;
  top: 0; left:0; right:0;
  z-index: 100;
  padding: 1.1rem 0;
  transition: background .35s var(--ease), box-shadow .35s var(--ease), padding .35s var(--ease);
}
.nav.is-scrolled{
  background: rgba(247,247,251,.82);
  backdrop-filter: blur(14px) saturate(140%);
  box-shadow: 0 1px 0 var(--line);
  padding: .7rem 0;
}
.nav__inner{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.nav__logo{ height: 34px; width:auto; }
.nav__links{
  display:flex;
  align-items:center;
  gap: 2.1rem;
  font-size:.92rem;
  font-weight:500;
}
.nav__links a{ color: var(--ink-soft); transition: color .2s; }
.nav__links a:hover{ color: var(--primary); }
.nav__cta{
  padding:.6rem 1.3rem;
  border-radius:999px;
  background: var(--ink);
  color: var(--white) !important;
}
.nav__cta:hover{ background: var(--accent); }

.nav__burger{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none; border:none;
  cursor:pointer;
  padding: 6px;
}
.nav__burger span{
  width:22px; height:2px; background:var(--ink); border-radius:2px;
  transition: transform .3s var(--ease), opacity .3s;
}
.nav__burger.is-active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav__burger.is-active span:nth-child(2){ opacity:0; }
.nav__burger.is-active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ===========================================================
   HERO — signature element: animated indigo spiral field
   =========================================================== */
.hero{
  position:relative;
  min-height: 100vh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding: 7rem 1.5rem 4rem;
  overflow:hidden;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, var(--accent-soft) 0%, var(--bg) 62%);
}

.hero__field{
  position:absolute;
  top:50%; right:-8%;
  width: min(64vw, 880px);
  height: min(64vw, 880px);
  transform: translateY(-50%);
  z-index:0;
  opacity: .55;
  background-image: repeating-conic-gradient(
    from 0deg,
    var(--accent) 0deg 3deg,
    var(--primary) 3deg 5deg,
    transparent 5deg 16deg
  );
  -webkit-mask-image: radial-gradient(circle, rgba(0,0,0,.85) 0%, rgba(0,0,0,.4) 55%, transparent 76%);
  mask-image: radial-gradient(circle, rgba(0,0,0,.85) 0%, rgba(0,0,0,.4) 55%, transparent 76%);
  border-radius:50%;
  will-change: transform;
}

.hero__inner{
  position:relative;
  z-index:1;
  max-width: var(--max);
  width:100%;
  margin: 0 auto;
}

.hero__title{
  display:flex;
  flex-direction:column;
  font-size: clamp(2.6rem, 6.4vw, 5rem);
  max-width: 14ch;
  margin-bottom: 1.6rem;
}
.hero__title span{ display:block; }
.hero__title-accent{
  color: var(--accent);
  position:relative;
}

.hero__lead{
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 42ch;
  margin-bottom: 2.2rem;
}

.hero__actions{
  display:flex;
  gap: 1rem;
  flex-wrap:wrap;
  margin-bottom: 3.6rem;
}

.hero__stats{
  display:flex;
  gap: 2.6rem;
  flex-wrap:wrap;
}
.stat dt{
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight:700;
  color: var(--primary);
}
.stat dd{
  font-size:.85rem;
  color: var(--ink-soft);
  margin-top:.15rem;
}

.hero__scroll{
  position:absolute;
  bottom: 2rem;
  left: 1.5rem;
  display:flex;
  align-items:center;
  gap:.6rem;
  z-index:1;
}
.hero__scroll span{
  width: 1px; height: 34px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}
.hero__scroll p{
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color: var(--ink-soft);
}

/* ===========================================================
   TRUST STRIP
   =========================================================== */
.trust{
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}
.trust__inner{
  max-width: 760px;
  margin:0 auto;
  padding: 2.6rem 1.5rem;
  text-align:center;
}
.trust__inner p{
  font-size:1.02rem;
  color: var(--ink-soft);
}

/* ===========================================================
   SECTION HEAD shared
   =========================================================== */
.section__head{
  max-width: var(--max);
  margin: 0 auto;
  padding: 6rem 1.5rem 3rem;
}
.section__head h2{ max-width: 18ch; }

/* ===========================================================
   SERVICES
   =========================================================== */
.services{ background: var(--bg); }
.services__grid{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem 6rem;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}
.service-card{
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.6rem 2.4rem;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .3s;
}
.service-card:hover{
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -16px rgba(26,26,46,.12);
  border-color: transparent;
}
.service-card__index{
  font-family: var(--font-display);
  font-size:.8rem;
  font-weight:600;
  letter-spacing:.08em;
  text-transform:uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
}
.service-card h3{ margin-bottom: .9rem; }
.service-card p{ color: var(--ink-soft); margin-bottom: 1.4rem; }
.service-card__list{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:.6rem;
}
.service-card__list li{
  font-size:.92rem;
  color: var(--ink);
  padding-left: 1.3rem;
  position:relative;
}
.service-card__list li::before{
  content:'';
  position:absolute;
  left:0; top:.5em;
  width:6px; height:6px;
  border-radius:50%;
  background: var(--primary);
}

/* ===========================================================
   PROCESS (timeline — real sequence, so numbering is justified)
   =========================================================== */
.process{ background: var(--bg-alt); }
.process__rail{
  position:relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem 6.5rem;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.4rem;
}
.process__line{
  position:absolute;
  top: 11px;
  left: calc(1.5rem + 11px);
  right: calc(1.5rem + 11px);
  height: 2px;
  background: var(--line);
}
.process__line-fill{
  height:100%;
  width:0%;
  background: var(--accent);
}
.process__step{ position:relative; padding-top: 2.6rem; }
.process__marker{
  position:absolute;
  top:0; left:0;
  width: 24px; height:24px;
  border-radius:50%;
  background: var(--white);
  border: 2.5px solid var(--accent);
}
.process__marker::after{
  content: attr(data-num);
}
.process__step h3{ margin-bottom:.6rem; }
.process__step p{ color: var(--ink-soft); font-size:.96rem; }

/* ===========================================================
   WHY (grátis)
   =========================================================== */
.why{ background: var(--primary-dk); color: var(--white); }
.why__inner{
  max-width: 720px;
  margin:0 auto;
  padding: 6.5rem 1.5rem;
}
.why .eyebrow{ color: #B9C2FF; }
.why .eyebrow::before{ background: #B9C2FF; }
.why h2{ color:var(--white); margin-bottom: 1.6rem; max-width: 16ch; }
.why__text{
  font-size:1.08rem;
  color: #D4D6EC;
  max-width: 52ch;
  margin-bottom: 1.2rem;
}

/* ===========================================================
   CONTACT
   =========================================================== */
.contact{ background: var(--bg); padding: 6.5rem 1.5rem; }
.contact__panel{
  max-width: var(--max);
  margin:0 auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 22px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  overflow:hidden;
}
.contact__copy{
  padding: 3.4rem;
  background: var(--accent-soft);
}
.contact__copy h2{ margin-bottom: 1rem; max-width:14ch; }
.contact__copy p{ color: var(--ink-soft); max-width: 32ch; }
.contact__direct{
  margin-top: 2.4rem;
  display:flex;
  flex-direction:column;
  gap: 1rem;
}
.contact__direct-item{
  display:flex;
  flex-direction:column;
  gap:.15rem;
  font-weight:600;
  color: var(--primary-dk);
  transition: color .2s;
}
.contact__direct-item:hover{ color: var(--accent); }
.contact__direct-label{
  font-size:.72rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  color: var(--ink-soft);
  font-weight:600;
}

.contact__form{
  padding: 3.4rem;
  display:flex;
  flex-direction:column;
  gap: 1.1rem;
}
.form__row{
  display:flex;
  flex-direction:column;
  gap:.4rem;
}
.form__row label{
  font-size:.82rem;
  font-weight:600;
  color: var(--ink-soft);
}
.form__row input,
.form__row select,
.form__row textarea{
  font-family: var(--font-body);
  font-size:.95rem;
  padding: .75rem .9rem;
  border-radius: 10px;
  border: 1.5px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  transition: border-color .2s;
  resize: vertical;
}
.form__row input:focus,
.form__row select:focus,
.form__row textarea:focus{
  border-color: var(--accent);
  outline:none;
}
.form__note{
  font-size:.86rem;
  color: var(--accent);
  min-height: 1.2em;
}

/* ===========================================================
   FOOTER
   =========================================================== */
.footer{ background: var(--ink); color: #C7C7DE; }
.footer__inner{
  max-width: var(--max);
  margin:0 auto;
  padding: 3.5rem 1.5rem 2.5rem;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap: 2rem;
}
.footer__logo{
  height: 30px;
  width:auto;
  margin-bottom: .9rem;
}
.footer__brand p{ font-size:.9rem; color:#9A9AB8; max-width: 28ch; }
.footer__links{
  display:flex;
  gap: 1.8rem;
  align-self:flex-start;
  font-size:.9rem;
}
.footer__links a:hover{ color: var(--white); }
.footer__bottom{
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 1.4rem 1.5rem;
  text-align:center;
  font-size:.8rem;
  color:#7E7E9C;
}

/* ===========================================================
   REVEAL ANIMATION (JS toggles .is-visible)
   =========================================================== */
[data-reveal]{
  opacity:0;
  transform: translateY(22px);
}
[data-reveal].is-visible{
  opacity:1;
  transform: translateY(0);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}

/* ===========================================================
   RESPONSIVE
   =========================================================== */
@media (max-width: 860px){
  .nav__inner{ position:relative; }
  .nav__links{
    position:fixed;
    top: 0; right:0;
    height:100vh;
    width: min(78vw, 320px);
    background: var(--white);
    flex-direction:column;
    align-items:flex-start;
    justify-content:flex-start;
    padding: 6rem 2rem 2rem;
    gap: 1.6rem;
    transform: translateX(100%);
    transition: transform .4s var(--ease);
    box-shadow: -10px 0 40px rgba(0,0,0,.08);
    z-index: 90;
  }
  .nav__links.is-open{ transform: translateX(0); }
  .nav__burger{
    display:flex;
    position:relative;
    z-index: 95;
    margin-left: auto;
  }

  .hero{ padding: 6.5rem 1.5rem 3rem; }
  .hero__field{
    width: 140vw; height:140vw;
    top: 38%; right:-46%;
    opacity:.4;
  }
  .hero__lead{ position:relative; }

  .services__grid{ grid-template-columns: 1fr; }
  .process__rail{ grid-template-columns: 1fr; gap: 2.6rem; }
  .process__line{ display:none; }

  .contact__panel{ grid-template-columns: 1fr; }
  .contact__copy{ padding: 2.4rem; }
  .contact__form{ padding: 2.4rem; }
}

@media (max-width: 520px){
  .hero__stats{ gap: 1.6rem; }
  .section__head{ padding: 4.5rem 1.5rem 2rem; }
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: .001ms !important; transition-duration: .001ms !important; }
  html{ scroll-behavior:auto; }
}