/* ==========================================================================
   volta.i — apresentação de franquias
   ========================================================================== */

:root {
  --green-900: #0f2e1a;
  --green-800: #14431f;
  --green-700: #1c6b2b;
  --green-600: #2e8b3f;
  --green-500: #4caf50;
  --green-400: #7fce6f;
  --green-300: #b3e6a8;
  --green-100: #e6f4e3;
  --cream: #f7f6f0;
  --ink: #10231a;
  --ink-soft: #3d4f45;
  --ink-faint: #6b7b72;
  --white: #ffffff;
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-soft: 0 20px 60px -20px rgba(15, 46, 26, 0.35);
  --shadow-card: 0 16px 40px -24px rgba(15, 46, 26, 0.25);
  --shadow-lift: 0 28px 60px -24px rgba(15, 46, 26, 0.38);
  --ease: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", sans-serif;
  --h1: clamp(34px, 4.6vw, 52px);
  --h2: clamp(26px, 3vw, 34px);
  --section-pad: clamp(56px, 8vw, 100px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

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

::selection { background: var(--green-300); color: var(--green-900); }

:focus-visible {
  outline: 2px solid var(--green-600);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0 0 16px;
  color: var(--green-900);
  text-wrap: balance;
}

p { line-height: 1.65; color: var(--ink-soft); margin: 0 0 16px; }

a { color: inherit; }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green-600);
  margin-bottom: 12px;
}

.highlight { color: var(--green-600); }

/* ---------- scroll reveal (progressive enhancement) ---------- */

.reveal {
  --reveal-ty: 0px;
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  transform: translateY(var(--reveal-ty));
}
.reveal-hidden {
  opacity: 0;
  --reveal-ty: 28px;
}
.reveal-stagger.reveal-hidden { transition-delay: var(--stagger-delay, 0s); }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-hidden { transition: none !important; opacity: 1 !important; transform: none !important; }
}

/* ---------- fundo animado ---------- */

.bg-anim {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 20%, #eef7ea 0%, transparent 55%),
    radial-gradient(circle at 80% 0%, #e3f3e0 0%, transparent 50%),
    var(--cream);
}

.grid-lines {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  animation: gridDrift 30s linear infinite;
}

@keyframes gridDrift {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(60px, 60px); }
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  will-change: transform;
}

.orb-1 {
  width: 480px; height: 480px;
  top: -120px; left: -100px;
  background: radial-gradient(circle, var(--green-400), transparent 70%);
  animation: floatOrb1 22s ease-in-out infinite;
}

.orb-2 {
  width: 380px; height: 380px;
  top: 30%; right: -140px;
  background: radial-gradient(circle, var(--green-500), transparent 70%);
  animation: floatOrb2 26s ease-in-out infinite;
}

.orb-3 {
  width: 340px; height: 340px;
  bottom: -100px; left: 30%;
  background: radial-gradient(circle, var(--green-300), transparent 70%);
  animation: floatOrb3 20s ease-in-out infinite;
}

@keyframes floatOrb1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(60px, 80px) scale(1.15); }
}
@keyframes floatOrb2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(-70px, 50px) scale(1.1); }
}
@keyframes floatOrb3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(50px, -60px) scale(1.2); }
}

.spark {
  position: absolute;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 12px 3px rgba(76, 175, 80, 0.6);
  opacity: 0.7;
  animation: sparkRise linear infinite;
}
.spark-1 { left: 12%; animation-duration: 14s; animation-delay: 0s; }
.spark-2 { left: 42%; animation-duration: 18s; animation-delay: 3s; }
.spark-3 { left: 68%; animation-duration: 16s; animation-delay: 6s; }
.spark-4 { left: 88%; animation-duration: 20s; animation-delay: 1s; }

@keyframes sparkRise {
  0%   { transform: translateY(110vh) scale(0.6); opacity: 0; }
  10%  { opacity: 0.8; }
  90%  { opacity: 0.4; }
  100% { transform: translateY(-10vh) scale(1.2); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .grid-lines, .orb, .spark { animation: none !important; }
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(247, 246, 240, 0.82);
  border-bottom: 1px solid rgba(20, 67, 31, 0.08);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.site-header.is-scrolled {
  background: rgba(247, 246, 240, 0.95);
  box-shadow: 0 8px 24px -16px rgba(15, 46, 26, 0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { width: 34px; height: 34px; object-fit: contain; }
.brand-icon-sm { width: 26px; height: 26px; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--green-900);
}
.brand-dot { color: var(--green-500); }

.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a:not(.nav-cta) {
  position: relative;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 8px 12px;
  transition: color 0.2s ease;
}
.main-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--green-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease-out);
}
.main-nav a:not(.nav-cta):hover { color: var(--green-700); }
.main-nav a:not(.nav-cta):hover::after { transform: scaleX(1); }

.nav-cta {
  background: var(--green-600);
  color: var(--white) !important;
  padding: 9px 18px;
  border-radius: 100px;
  font-weight: 600 !important;
  margin-left: 10px;
  transition: background 0.2s ease, transform 0.2s ease;
}
.nav-cta:hover { background: var(--green-700); color: var(--white) !important; transform: translateY(-1px); }

.lang-switch { display: flex; align-items: center; gap: 2px; padding: 3px; border: 1px solid rgba(20, 67, 31, 0.15); border-radius: 999px; background: var(--white); margin-left: 6px; }
.lang-btn { font-family: inherit; font-size: 12px; font-weight: 700; letter-spacing: 0.02em; color: var(--ink-faint); background: transparent; border: none; padding: 6px 10px; border-radius: 999px; cursor: pointer; transition: color 0.2s ease, background 0.2s ease; }
.lang-btn:hover { color: var(--ink); }
.lang-btn[aria-pressed="true"] { color: var(--white); background: var(--green-600); }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid rgba(20, 67, 31, 0.15);
  background: var(--white);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.nav-toggle-bars {
  position: relative;
  width: 18px;
  height: 12px;
}
.nav-toggle-bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--green-900);
  transition: transform 0.25s var(--ease), opacity 0.2s ease, top 0.25s var(--ease);
}
.nav-toggle-bars span:nth-child(1) { top: 0; }
.nav-toggle-bars span:nth-child(2) { top: 5px; }
.nav-toggle-bars span:nth-child(3) { top: 10px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3) { top: 5px; transform: rotate(-45deg); }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), background 0.2s ease, border-color 0.2s ease;
}
.btn-arrow { display: inline-block; transition: transform 0.25s var(--ease-out); }
.btn:hover .btn-arrow { transform: translateX(4px); }

.btn-primary {
  background: var(--green-600);
  color: var(--white);
  box-shadow: 0 12px 30px -10px rgba(46, 139, 63, 0.55);
}
.btn-primary:hover { background: var(--green-700); transform: translateY(-3px); box-shadow: 0 18px 34px -12px rgba(46, 139, 63, 0.6); }
.btn-primary:active { transform: translateY(-1px) scale(0.98); }

.btn-ghost {
  background: transparent;
  color: var(--green-800);
  border: 1.5px solid rgba(20, 67, 31, 0.25);
}
.btn-ghost:hover { border-color: var(--green-600); color: var(--green-700); transform: translateY(-3px); }
.btn-ghost:active { transform: translateY(-1px) scale(0.98); }

.btn-lg { padding: 16px 34px; font-size: 16px; }

/* ---------- hero ---------- */

.hero { padding: var(--section-pad) 0 48px; }

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero h1 { font-size: var(--h1); }
.lead { font-size: 17px; max-width: 480px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }

.hero-chips {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid rgba(20, 67, 31, 0.1);
}
.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--green-800);
  background: var(--green-100);
  border: 1px solid rgba(46, 139, 63, 0.18);
  padding: 7px 12px;
  border-radius: 100px;
}
.hero-chip-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--green-500);
  flex-shrink: 0;
}

/* ---------- build-swap (efeito de montagem + perspectiva 3D no hover) ---------- */

.tilt-stage {
  perspective: 1400px;
}

.build-swap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  aspect-ratio: 4 / 3;
  isolation: isolate;
  cursor: pointer;
  transform: perspective(1400px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg)) scale3d(var(--tilt-s, 1), var(--tilt-s, 1), 1);
  transition: transform 0.5s var(--ease-out), box-shadow 0.5s var(--ease-out);
  will-change: transform;
}
.build-swap:hover {
  box-shadow: var(--shadow-lift);
}

.build-swap-glare {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(circle at var(--glare-x, 50%) var(--glare-y, 50%), rgba(255,255,255,0.35), transparent 45%);
  transition: opacity 0.4s ease;
}
.build-swap:hover .build-swap-glare { opacity: 1; }

.build-swap img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.build-swap .img-base {
  position: relative;
  transition: opacity 1.6s var(--ease), transform 1.6s var(--ease), filter 1.6s var(--ease);
}

.build-swap .img-mid,
.build-swap .img-reveal {
  opacity: 0;
  transform: scale(1.03);
  transition: opacity 1.8s var(--ease), transform 2s var(--ease);
}

/* a mesma pausa entre camadas vale para os dois sentidos: ao entrar, a
   próxima camada surge com um leve atraso; ao sair, ela some com o mesmo
   atraso — sem trocar o delay em pleno voo (evita saltos visuais). */
.build-swap .img-mid { transition-delay: 0.2s; }
.build-swap .img-reveal { transition-delay: 0.5s; z-index: 2; }

.build-swap:hover .img-base,
.build-swap:focus-within .img-base {
  opacity: 0;
  transform: scale(0.97);
  filter: blur(1px);
}

.build-swap:hover .img-mid,
.build-swap:focus-within .img-mid {
  opacity: 1;
  transform: scale(1.01);
}

.build-swap:hover .img-reveal,
.build-swap:focus-within .img-reveal {
  opacity: 1;
  transform: scale(1);
}

.build-tag {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 5;
  background: rgba(15, 46, 26, 0.72);
  color: var(--white);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 8px 14px;
  border-radius: 100px;
  opacity: 0.9;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.build-swap:hover .build-tag,
.build-swap:focus-within .build-tag {
  opacity: 0;
  transform: translateY(6px);
}

.build-swap-lg { aspect-ratio: 5 / 4; }

@media (prefers-reduced-motion: reduce) {
  .build-swap { transform: none !important; transition: box-shadow 0.3s ease; }
}

/* ---------- franquias ---------- */

.franquias { padding: var(--section-pad) 0; }

.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head h2 { font-size: var(--h2); }
.section-head p { font-size: 16px; margin-bottom: 0; }

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

.franquia-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  border: 1px solid rgba(20, 67, 31, 0.08);
  box-shadow: var(--shadow-card);
  --reveal-ty: 0px;
  transform: translateY(var(--reveal-ty)) perspective(1000px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg));
  transition: transform 0.5s var(--ease-out), box-shadow 0.4s var(--ease-out), opacity 0.8s var(--ease-out);
  will-change: transform;
}
.franquia-card.reveal-hidden { --reveal-ty: 28px; }

.franquia-card:hover {
  box-shadow: var(--shadow-lift);
}

.franquia-card.is-featured {
  background: linear-gradient(160deg, var(--green-700), var(--green-800));
  border: none;
  color: var(--white);
}
.franquia-card.is-featured h3,
.franquia-card.is-featured p { color: var(--white); }
.franquia-card.is-featured .card-tag {
  background: rgba(255,255,255,0.15);
  color: var(--green-300);
}
.franquia-card.is-featured .card-link { color: var(--green-300); }

.card-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(46, 139, 63, 0.1);
  color: var(--green-700);
  padding: 6px 12px;
  border-radius: 100px;
  margin-bottom: 14px;
  align-self: flex-start;
}

.franquia-card h3 { font-size: 21px; margin-bottom: 10px; }
.franquia-card p { font-size: 14.5px; margin-bottom: 0; flex-grow: 1; }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  color: var(--green-700);
  margin-top: 18px;
}
.card-link .btn-arrow { transition: transform 0.25s var(--ease-out); }
.card-link:hover .btn-arrow { transform: translateX(4px); }

@media (prefers-reduced-motion: reduce) {
  .franquia-card { transform: none !important; }
}

/* ---------- detail (concerta bikes / ecopostos / loja) ---------- */

.detail {
  padding: var(--section-pad) 0;
  position: relative;
}

.detail-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.detail-reverse .detail-visual { order: 2; }
.detail-reverse .detail-copy { order: 1; }

.detail-alt {
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(255, 255, 255, 0.55) 12%,
    rgba(255, 255, 255, 0.55) 88%,
    transparent
  );
}

.detail-copy h2 { font-size: var(--h2); }

.detail-note {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
  padding: 14px 16px;
  background: rgba(46, 139, 63, 0.07);
  border: 1px solid rgba(46, 139, 63, 0.15);
  border-radius: var(--radius-md);
  transition: background 0.3s ease, border-color 0.3s ease;
}
.detail-note:hover {
  background: rgba(46, 139, 63, 0.12);
  border-color: rgba(46, 139, 63, 0.28);
}
.detail-note img {
  width: 84px;
  height: 84px;
  object-fit: cover;
  border-radius: 10px;
  flex-shrink: 0;
}
.detail-note p {
  font-size: 13.5px;
  margin: 0;
  color: var(--ink-soft);
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-list li {
  font-size: 15px;
  color: var(--ink-soft);
  padding-left: 26px;
  position: relative;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.15);
}

.feature-list strong { color: var(--green-900); }

/* ---------- como funciona ---------- */

.how { padding: var(--section-pad) 0; }

.how-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.how-step {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  border: 1px solid rgba(20, 67, 31, 0.08);
  --reveal-ty: 0px;
  transform: translateY(var(--reveal-ty)) perspective(1000px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg));
  transition: transform 0.5s var(--ease-out), box-shadow 0.4s var(--ease-out), border-color 0.3s ease, opacity 0.8s var(--ease-out);
  will-change: transform;
}
.how-step.reveal-hidden { --reveal-ty: 28px; }
.how-step:hover {
  box-shadow: var(--shadow-card);
  border-color: rgba(46, 139, 63, 0.25);
}

.how-number {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--green-400);
  margin-bottom: 10px;
}

.how-step h3 { font-size: 17px; margin-bottom: 8px; }
.how-step p { font-size: 14px; margin-bottom: 0; }

@media (prefers-reduced-motion: reduce) {
  .how-step { transform: none !important; }
}

/* ---------- cta final ---------- */

.cta-final {
  padding: 76px 24px;
  text-align: center;
  background: linear-gradient(160deg, var(--green-800), var(--green-900));
  color: var(--white);
  border-radius: var(--radius-lg);
  margin: 0 24px calc(var(--section-pad) * 0.85);
  position: relative;
  overflow: hidden;
}
.cta-final::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 0%, rgba(255,255,255,0.08), transparent 55%);
  pointer-events: none;
}

.cta-final-inner { max-width: 560px; margin: 0 auto; position: relative; }
.cta-final h2 { color: var(--white); font-size: var(--h2); }
.cta-final p { color: rgba(255,255,255,0.8); margin-bottom: 26px; }

/* ---------- footer ---------- */

.site-footer { padding: 30px 0 50px; }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid rgba(20, 67, 31, 0.1);
  padding-top: 24px;
}
.footer-inner p { font-size: 13px; margin: 0; color: var(--ink-soft); }

/* ---------- responsive ---------- */

@media (max-width: 960px) {
  .hero-inner, .detail-inner { grid-template-columns: 1fr; }
  .detail-visual { order: -1; }
  .franquia-grid { grid-template-columns: 1fr; }
  .how-steps { grid-template-columns: repeat(2, 1fr); }

  .nav-toggle { display: flex; }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: var(--cream);
    border-bottom: 1px solid rgba(20, 67, 31, 0.1);
    box-shadow: 0 16px 30px -20px rgba(15, 46, 26, 0.3);
    padding: 10px 24px 18px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.35s var(--ease), opacity 0.25s ease, visibility 0.35s;
  }
  .main-nav.is-open {
    max-height: 420px;
    opacity: 1;
    visibility: visible;
  }
  .main-nav a:not(.nav-cta) {
    padding: 12px 4px;
    border-bottom: 1px solid rgba(20, 67, 31, 0.06);
  }
  .main-nav a:not(.nav-cta)::after { display: none; }
  .nav-cta { margin: 10px 0 0; text-align: center; justify-content: center; }
}

@media (max-width: 560px) {
  .how-steps { grid-template-columns: 1fr; }
  .hero { padding: 40px 0 24px; }
  .hero-chips { gap: 8px; }
  .cta-final { margin: 0 12px calc(var(--section-pad) * 0.7); padding: 50px 20px; }
}