/* ============================================================
   VoltCharge — Landing Page
   Dark / graphite base, neon-green accent, premium EV-tech feel
   ============================================================ */

:root {
  --bg:        #0A0A0A;
  --bg-2:      #101010;
  --bg-3:      #141414;
  --card:      #131313;
  --card-2:    #171717;
  --border:    rgba(255,255,255,0.08);
  --border-2:  rgba(255,255,255,0.14);
  --green:     #1AE64B;
  --green-2:   #14c441;
  --green-ink: #06200f;
  --glow:      rgba(26,230,75,0.45);
  --glow-soft: rgba(26,230,75,0.14);
  --white:     #FFFFFF;
  --gray:      #B7BDBA;
  --gray-2:    #8A908D;
  --radius:    18px;
  --radius-sm: 12px;
  --radius-lg: 26px;
  --maxw:      1180px;
  --pad-x:     22px;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body:    "Manrope", system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--white);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.green { color: var(--green); }

/* ---------- Section rhythm ---------- */
section { position: relative; }
.section-pad { padding: 86px 0; }
@media (max-width: 760px) { .section-pad { padding: 60px 0; } }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--glow-soft);
  border: 1px solid rgba(26,230,75,0.28);
  padding: 8px 15px;
  border-radius: 100px;
}
.eyebrow svg { width: 15px; height: 15px; }

.section-head { max-width: 760px; margin-bottom: 46px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 {
  font-size: clamp(28px, 5vw, 46px);
  margin-top: 18px;
}
.section-head p {
  color: var(--gray);
  font-size: clamp(16px, 2.2vw, 19px);
  margin-top: 16px;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.01em;
  border: none;
  border-radius: 100px;
  padding: 16px 26px;
  cursor: pointer;
  text-decoration: none;
  transition: transform .18s ease, box-shadow .25s ease, background .2s ease;
  white-space: nowrap;
}
.btn svg { width: 19px; height: 19px; }

.btn-primary {
  background: var(--green);
  color: var(--green-ink);
  box-shadow: 0 0 0 1px rgba(26,230,75,0.35), 0 12px 34px -8px var(--glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(26,230,75,0.6), 0 16px 44px -8px var(--glow); }

.btn-ghost {
  background: rgba(255,255,255,0.04);
  color: var(--white);
  border: 1px solid var(--border-2);
}
.btn-ghost:hover { background: rgba(255,255,255,0.09); transform: translateY(-2px); }

.btn-wa {
  background: #20bd5a;
  color: #fff;
  box-shadow: 0 10px 30px -10px rgba(32,189,90,0.6);
}
.btn-wa:hover { background: #25c963; transform: translateY(-2px); }

.btn-block { width: 100%; }
.btn-lg { padding: 19px 30px; font-size: 17px; }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,10,10,0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.02em;
  color: var(--white);
  text-decoration: none;
}
.logo .mark {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--green);
  box-shadow: 0 0 18px -2px var(--glow);
}
.logo .mark svg { width: 20px; height: 20px; color: var(--green-ink); }
.logo b { color: var(--green); font-weight: 700; }

.nav-cta { display: flex; align-items: center; gap: 12px; }
.hamburger { display: none; }

@media (max-width: 600px) {
  .nav-cta .btn-ghost { display: none; }
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  padding: 56px 0 70px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -160px; left: 50%;
  transform: translateX(-50%);
  width: 900px; height: 620px;
  background: radial-gradient(closest-side, var(--glow-soft), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  grid-template-rows: auto 1fr;
  column-gap: 48px;
  row-gap: 0;
  align-items: start;
}
.hero-head { grid-column: 1; grid-row: 1; }
.hero-rest { grid-column: 1; grid-row: 2; align-self: start; }
.hero .form-card { grid-column: 2; grid-row: 1 / span 2; align-self: center; }
.hero-head h1 {
  font-size: clamp(34px, 5.4vw, 58px);
  margin: 20px 0 0;
}
.hero-rest p.sub {
  color: var(--gray);
  font-size: clamp(16px, 2.3vw, 20px);
  max-width: 560px;
  margin-top: 18px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  margin-top: 30px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: url('images/hero.jpg') center right / cover no-repeat;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10,10,10,0.98) 0%, rgba(10,10,10,0.92) 36%, rgba(10,10,10,0.5) 72%, rgba(10,10,10,0.78) 100%),
    linear-gradient(180deg, rgba(10,10,10,0.55), rgba(10,10,10,0.85));
}
@media (max-width: 980px) {
  .hero-bg { background-position: center; }
  .hero-bg::after {
    background: linear-gradient(180deg, rgba(10,10,10,0.9), rgba(10,10,10,0.95));
  }
}

/* Form card */
.form-card {
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  padding: 30px 28px 28px;
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.8), 0 0 0 1px rgba(26,230,75,0.05);
}
.form-card .fc-head { margin-bottom: 20px; }
.form-card .fc-head h3 { font-size: 23px; }
.form-card .fc-head p { color: var(--gray-2); font-size: 14.5px; margin-top: 6px; }

.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray);
  margin-bottom: 7px;
  letter-spacing: 0.01em;
}
.field input,
.field select {
  width: 100%;
  height: 54px;
  background: #0c0c0c;
  border: 1px solid var(--border-2);
  border-radius: 13px;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  padding: 0 16px;
  transition: border-color .2s ease, box-shadow .2s ease;
  appearance: none;
}
.field input::placeholder { color: #5d635f; }
.field select { cursor: pointer; }
.field select:invalid { color: #5d635f; }
.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--glow-soft);
}
.field.select-wrap { position: relative; }
.field.select-wrap::after {
  content: "";
  position: absolute;
  right: 18px; bottom: 22px;
  width: 9px; height: 9px;
  border-right: 2px solid var(--gray);
  border-bottom: 2px solid var(--gray);
  transform: rotate(45deg);
  pointer-events: none;
}
.form-card .btn { margin-top: 6px; }
.form-note {
  text-align: center;
  font-size: 12.5px;
  color: var(--gray-2);
  margin-top: 13px;
}

/* ============================================================
   Credibility bar
   ============================================================ */
.cred {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}
.cred-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  padding: 26px 0;
}
.cred-item {
  display: flex;
  align-items: center;
  gap: 13px;
}
.cred-item .ic {
  flex: none;
  display: grid; place-items: center;
  width: 42px; height: 42px;
  border-radius: 11px;
  background: var(--glow-soft);
  border: 1px solid rgba(26,230,75,0.22);
}
.cred-item .ic svg { width: 21px; height: 21px; color: var(--green); }
.cred-item span { font-size: 14.5px; color: var(--gray); font-weight: 500; line-height: 1.35; }

/* ============================================================
   Cards grid (Para quem é / O que fazemos)
   ============================================================ */
.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(26,230,75,0.35);
  box-shadow: 0 24px 50px -28px var(--glow);
}
.card .ic-lg {
  display: grid; place-items: center;
  width: 54px; height: 54px;
  border-radius: 14px;
  background: linear-gradient(160deg, rgba(26,230,75,0.18), rgba(26,230,75,0.04));
  border: 1px solid rgba(26,230,75,0.25);
  margin-bottom: 20px;
}
.card .ic-lg svg { width: 27px; height: 27px; color: var(--green); }
.card h3 { font-size: 21px; margin-bottom: 11px; }
.card p { color: var(--gray); font-size: 15.5px; }

/* ============================================================
   Problem → turn
   ============================================================ */
.problem {
  background:
    radial-gradient(700px 380px at 80% 0%, var(--glow-soft), transparent 60%),
    var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.problem h2 { font-size: clamp(28px, 4.6vw, 44px); }
.problem .lead { color: var(--gray); font-size: clamp(16px, 2.2vw, 19px); margin: 22px 0 30px; }
.problem .lead b { color: var(--white); font-weight: 600; }

/* ============================================================
   Why VoltCharge (image + 4 points)
   ============================================================ */
.why-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 50px;
  align-items: center;
}
.why-photo-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-2);
  box-shadow: 0 40px 90px -40px var(--glow);
}
.why-photo-wrap::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 40%, rgba(26,230,75,0.12));
  pointer-events: none;
}
.why-points { display: grid; gap: 14px; }
.why-point {
  display: flex;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
}
.why-point .ic {
  flex: none;
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: 11px;
  background: var(--glow-soft);
  border: 1px solid rgba(26,230,75,0.25);
}
.why-point .ic svg { width: 22px; height: 22px; color: var(--green); }
.why-point h4 { font-size: 18px; margin-bottom: 4px; }
.why-point p { color: var(--gray); font-size: 14.5px; }

/* ============================================================
   How it works — 4 steps
   ============================================================ */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
.step {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 24px 26px;
}
.step .num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 34px;
  color: var(--green);
  line-height: 1;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.step .num::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(26,230,75,0.4), transparent);
}
.step h4 { font-size: 18px; margin-bottom: 9px; }
.step p { color: var(--gray); font-size: 14.5px; }

/* ============================================================
   App section
   ============================================================ */
.app-sec {
  background:
    radial-gradient(620px 420px at 18% 50%, var(--glow-soft), transparent 65%),
    var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.app-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}
.app-copy h2 { font-size: clamp(28px, 4.6vw, 44px); }
.app-copy p { color: var(--gray); font-size: clamp(16px, 2.2vw, 19px); margin: 20px 0 30px; }
.app-stage { display: flex; justify-content: center; }

/* Phone mockup (CSS UI) */
.phone {
  width: 300px;
  height: 610px;
  background: #050505;
  border-radius: 42px;
  border: 1px solid var(--border-2);
  padding: 12px;
  box-shadow: 0 50px 100px -30px rgba(0,0,0,0.9), 0 0 0 1px rgba(26,230,75,0.06), 0 0 60px -20px var(--glow);
  position: relative;
}
.phone::before {
  content: "";
  position: absolute;
  top: 20px; left: 50%; transform: translateX(-50%);
  width: 110px; height: 26px;
  background: #050505;
  border-radius: 100px;
  z-index: 3;
}
.phone-screen {
  width: 100%; height: 100%;
  background: linear-gradient(180deg, #0d120e, #0a0a0a);
  border-radius: 32px;
  overflow: hidden;
  padding: 46px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 13px;
}
.app-top { display: flex; align-items: center; justify-content: space-between; }
.app-top .t { font-family: var(--font-display); font-weight: 700; font-size: 15px; }
.app-top .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); }
.app-balance {
  background: linear-gradient(150deg, rgba(26,230,75,0.16), rgba(26,230,75,0.03));
  border: 1px solid rgba(26,230,75,0.28);
  border-radius: 16px;
  padding: 16px;
}
.app-balance .lbl { font-size: 11px; color: var(--gray); letter-spacing: 0.05em; text-transform: uppercase; }
.app-balance .val { font-family: var(--font-display); font-weight: 700; font-size: 26px; margin-top: 4px; }
.app-balance .val small { font-size: 14px; color: var(--green); }
.app-bars { display: flex; align-items: flex-end; gap: 7px; height: 70px; margin-top: 12px; }
.app-bars i { flex: 1; background: rgba(26,230,75,0.25); border-radius: 4px 4px 0 0; }
.app-bars i.hot { background: var(--green); box-shadow: 0 0 12px -2px var(--glow); }
.app-row {
  display: flex; align-items: center; gap: 11px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 13px;
}
.app-row .ai { width: 34px; height: 34px; border-radius: 9px; background: var(--glow-soft); display: grid; place-items: center; flex: none; }
.app-row .ai svg { width: 17px; height: 17px; color: var(--green); }
.app-row .am { flex: 1; }
.app-row .am .n { font-size: 13px; font-weight: 600; }
.app-row .am .s { font-size: 11px; color: var(--gray-2); }
.app-row .amt { font-family: var(--font-display); font-weight: 700; font-size: 14px; color: var(--green); }

/* ============================================================
   Testimonials
   ============================================================ */
.quotes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.quote {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
}
.stars { display: flex; gap: 3px; margin-bottom: 16px; }
.stars svg { width: 18px; height: 18px; color: var(--green); }
.quote p { color: #e7eae8; font-size: 16px; line-height: 1.6; flex: 1; }
.quote .who {
  display: flex; align-items: center; gap: 11px;
  margin-top: 22px; padding-top: 18px;
  border-top: 1px solid var(--border);
}
.quote .who .av {
  width: 38px; height: 38px; border-radius: 50%;
  background: linear-gradient(150deg, var(--green), #0c6b29);
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 700; color: var(--green-ink); font-size: 15px;
}
.quote .who .nm { font-size: 14px; font-weight: 600; color: var(--gray); }

/* ============================================================
   FAQ
   ============================================================ */
.faq { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  padding: 22px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-q .plus {
  flex: none;
  position: relative;
  width: 20px; height: 20px;
}
.faq-q .plus::before,
.faq-q .plus::after {
  content: "";
  position: absolute; top: 50%; left: 50%;
  background: var(--green);
  transition: transform .25s ease;
}
.faq-q .plus::before { width: 14px; height: 2px; transform: translate(-50%,-50%); }
.faq-q .plus::after  { width: 2px; height: 14px; transform: translate(-50%,-50%); }
.faq-item.open .plus::after { transform: translate(-50%,-50%) scaleY(0); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.faq-a p {
  color: var(--gray);
  font-size: 15.5px;
  padding: 0 24px 22px;
}

/* ============================================================
   Final CTA + form
   ============================================================ */
.final {
  background:
    radial-gradient(800px 460px at 50% 0%, var(--glow-soft), transparent 60%),
    var(--bg-2);
  border-top: 1px solid var(--border);
}
.final-grid {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 54px;
  align-items: center;
}
.final h2 { font-size: clamp(30px, 5vw, 50px); }
.final p { color: var(--gray); font-size: clamp(16px, 2.3vw, 20px); margin-top: 18px; max-width: 480px; }
.final ul { list-style: none; margin-top: 28px; display: grid; gap: 13px; }
.final li { display: flex; align-items: center; gap: 12px; font-size: 16px; color: #e7eae8; }
.final li svg { width: 20px; height: 20px; color: var(--green); flex: none; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 50px 0 130px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 30px;
  align-items: start;
}
.site-footer .logo { margin-bottom: 14px; }
.footer-tag { color: var(--gray); font-size: 15px; max-width: 380px; }
.footer-contact { display: grid; gap: 11px; }
.footer-contact a, .footer-contact span {
  display: flex; align-items: center; gap: 10px;
  color: var(--gray); font-size: 15px; text-decoration: none;
}
.footer-contact a:hover { color: var(--green); }
.footer-contact svg { width: 17px; height: 17px; color: var(--green); flex: none; }
.footer-bottom {
  margin-top: 36px; padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--gray-2); font-size: 13.5px;
}

/* ============================================================
   Sticky / floating WhatsApp
   ============================================================ */
.wa-float {
  position: fixed;
  right: 22px; bottom: 26px;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  background: #20bd5a;
  color: #fff;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  padding: 15px 20px;
  border-radius: 100px;
  text-decoration: none;
  box-shadow: 0 16px 40px -10px rgba(32,189,90,0.6);
  transition: transform .2s ease;
}
.wa-float:hover { transform: translateY(-3px) scale(1.02); }
.wa-float svg { width: 23px; height: 23px; }

/* Mobile: sticky full-width bottom bar */
.wa-sticky {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 200;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 11px 14px calc(11px + env(safe-area-inset-bottom));
  gap: 10px;
}
.wa-sticky .btn { flex: 1; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; column-gap: 0; row-gap: 28px; }
  .hero-head, .hero-rest, .hero .form-card { grid-column: 1; grid-row: auto; }
  .hero .form-card { align-self: stretch; }
  .problem-grid,
  .why-grid,
  .app-grid,
  .final-grid { grid-template-columns: 1fr; gap: 38px; }
  .why-grid .why-photo-wrap { order: -1; }
  .app-grid .app-stage { order: -1; }
  .cred-grid { grid-template-columns: repeat(2, 1fr); gap: 20px 14px; }
  .cards-3,
  .quotes { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  :root { --pad-x: 18px; }
  .wa-float { display: none; }
  .wa-sticky { display: flex; }
  .site-footer { padding-bottom: 110px; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-card { padding: 24px 20px; }
  .hero { padding: 36px 0 50px; }
}

@media (max-width: 460px) {
  .steps { grid-template-columns: 1fr; }
  .cred-grid { grid-template-columns: 1fr; }
}