/* =========================================================
   EDUCACAU — estilos
   Paleta: verde profundo (principal), dourado (destaques/CTAs),
   bege claro (fundo alternado), marrom cacau (detalhes/texto escuro)
   ========================================================= */

:root {
  --green-deep: #163a2b;
  --green-deep-2: #1f4a37;
  --green-mid: #2f6b4f;
  --gold: #e3ac2e;
  --gold-light: #f4cf6b;
  --beige: #f6efe0;
  --beige-2: #efe4cb;
  --cacao-brown: #4a2e1c;
  --cacao-brown-dark: #331f12;
  --cream: #fbf8f1;
  --ink: #24201a;
  --ink-soft: #524a3e;
  --white: #ffffff;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;

  --shadow-soft: 0 12px 30px rgba(22, 58, 43, 0.12);
  --shadow-card: 0 8px 24px rgba(74, 46, 28, 0.10);

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;

  --container-width: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .ebook-mockup { transform: none !important; }
}

/* ---------- Scroll reveal (aplicado via JS) ---------- */
[data-reveal].reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].reveal.is-visible {
  opacity: 1;
  transform: none;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--green-deep);
  margin: 0 0 0.5em;
  line-height: 1.2;
}

p { margin: 0 0 1em; color: var(--ink-soft); }

a { color: inherit; }

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--gold);
  color: var(--cacao-brown-dark);
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  z-index: 200;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 700;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  font-family: var(--font-body);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(180deg, var(--gold-light), var(--gold));
  color: var(--cacao-brown-dark);
  box-shadow: 0 6px 16px rgba(227, 172, 46, 0.45);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(227, 172, 46, 0.55); }
.btn-primary:active { transform: translateY(0); }
.btn-lg { padding: 16px 30px; font-size: 1.05rem; }
.btn-sm { padding: 10px 18px; font-size: 0.9rem; }
.btn[aria-disabled="true"] {
  opacity: 0.7;
  cursor: not-allowed;
}
.cta-price { white-space: nowrap; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(22, 58, 43, 0.97);
  backdrop-filter: saturate(140%) blur(6px);
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
  transition: box-shadow 0.25s ease;
}
.site-header.is-scrolled {
  box-shadow: 0 10px 24px rgba(15, 33, 24, 0.28);
}
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transition: width 0.1s linear;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--beige);
}
.brand-leaf { width: 28px; height: 28px; object-fit: contain; flex-shrink: 0; }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--beige);
}
.brand-name strong { color: var(--gold-light); font-weight: 700; }

.main-nav {
  display: flex;
  gap: 28px;
}
.main-nav a {
  color: var(--beige);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  opacity: 0.9;
}
.main-nav a:hover { opacity: 1; color: var(--gold-light); }

.header-actions { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--beige);
  border-radius: 2px;
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1200px 500px at 15% -10%, rgba(244, 207, 107, 0.18), transparent 60%),
    linear-gradient(160deg, var(--green-deep) 0%, var(--green-deep-2) 55%, var(--green-mid) 100%);
  padding: 56px 0 72px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gold-light);
  margin-bottom: 14px;
}
.hero h1 {
  color: var(--white);
  font-size: clamp(2rem, 4vw, 2.9rem);
  margin-bottom: 18px;
}
.hero-subtitle {
  color: var(--beige);
  opacity: 0.92;
  font-size: 1.05rem;
  max-width: 46ch;
  margin-bottom: 26px;
}

.hero-price-block { margin-bottom: 26px; }
.price-tag {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(244, 207, 107, 0.35);
  padding: 12px 20px;
  border-radius: var(--radius-md);
}
.price-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1;
}
.price-note { font-size: 0.85rem; color: var(--beige); opacity: 0.85; }

.cta-main { margin-bottom: 12px; animation: gentle-pulse 3.4s ease-in-out infinite; }
.cta-main:hover, .cta-main:focus-visible { animation-play-state: paused; }

@keyframes gentle-pulse {
  0%, 100% { box-shadow: 0 6px 16px rgba(227, 172, 46, 0.45); }
  50% { box-shadow: 0 6px 28px rgba(227, 172, 46, 0.8); }
}
.hero-support-text {
  color: var(--beige);
  opacity: 0.75;
  font-size: 0.85rem;
  margin-bottom: 0;
}

.hero-visual { display: flex; justify-content: center; perspective: 1000px; }

.ebook-mockup {
  position: relative;
  width: min(320px, 100%);
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, var(--green-mid), var(--green-deep) 70%);
  border: 6px solid var(--cacao-brown-dark);
  box-shadow: var(--shadow-soft);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: var(--beige);
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
  will-change: transform;
}
.ebook-mockup.is-tilting {
  box-shadow: 0 24px 46px rgba(22, 58, 43, 0.35);
}
.ebook-mockup-badge {
  align-self: flex-start;
  background: var(--gold);
  color: var(--cacao-brown-dark);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.ebook-mockup-leaf { width: 44px; height: 44px; object-fit: contain; margin-bottom: 6px; }
.ebook-mockup-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 22px;
  color: var(--beige);
}
.ebook-mockup-brand strong { color: var(--gold-light); }
.ebook-mockup-title {
  color: var(--white);
  font-size: 1.5rem;
  margin-bottom: 12px;
}
.ebook-mockup-sub { font-size: 0.85rem; color: var(--beige); opacity: 0.85; margin-bottom: 0; }
.ebook-mockup-cover {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ebook-mockup-cover:not([hidden]) ~ * { display: none; }

/* ---------- Banner de estatística ---------- */
.stat-banner {
  background: var(--gold);
  padding: 26px 0;
}
.stat-banner-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  text-align: center;
}
.stat-number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--cacao-brown-dark);
  margin: 0;
  line-height: 1;
  flex-shrink: 0;
}
.stat-text {
  color: var(--cacao-brown-dark);
  opacity: 0.9;
  font-size: 0.94rem;
  max-width: 56ch;
  margin: 0;
}

/* ---------- Sections ---------- */
.section { padding: 64px 0; }
.section-alt { background: var(--beige); }
.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  text-align: center;
  margin-bottom: 10px;
}
.section-lead {
  text-align: center;
  max-width: 60ch;
  margin: 0 auto 36px;
}

/* ---------- Abas (possibilidades) ---------- */
.tabs-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 8px;
}
.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--beige-2);
  color: var(--ink-soft);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 12px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.tab-icon { font-size: 1.05rem; }
.tab-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.tab-btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.tab-btn[aria-selected="true"] {
  background: var(--green-deep);
  border-color: var(--green-deep);
  color: var(--gold-light);
  box-shadow: var(--shadow-card);
}

.tabs-panels { position: relative; }
.tab-panel {
  background: var(--white);
  border: 1px solid var(--beige-2);
  border-radius: var(--radius-md);
  padding: 34px 30px;
  box-shadow: var(--shadow-card);
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  animation: tab-fade-in 0.35s ease;
}
@keyframes tab-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.tab-panel-icon { font-size: 2.2rem; margin-bottom: 12px; }
.tab-panel h3 { font-size: 1.2rem; margin-bottom: 10px; }
.tab-panel p { font-size: 0.96rem; margin-bottom: 0; }

/* ---------- Benefícios ---------- */
.benefit-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px 32px;
}
.benefit-list li { display: flex; gap: 14px; align-items: flex-start; }
.benefit-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border-radius: 12px;
  font-size: 1.3rem;
  box-shadow: var(--shadow-card);
}
.benefit-list h3 { font-size: 1.02rem; margin-bottom: 4px; }
.benefit-list p { font-size: 0.92rem; margin-bottom: 0; }

.disclaimer-note {
  text-align: center;
  font-size: 0.85rem;
  font-style: italic;
  max-width: 60ch;
  margin: 0 auto;
}

/* ---------- Público ---------- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.audience-item {
  text-align: center;
  background: var(--white);
  border: 1px solid var(--beige-2);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.audience-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(74, 46, 28, 0.16);
}
.audience-icon { font-size: 1.7rem; margin-bottom: 10px; }
.audience-item p { font-size: 0.92rem; margin-bottom: 0; color: var(--ink); }

/* ---------- Sobre ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.section-title-left {
  font-size: clamp(1.5rem, 3vw, 2rem);
  text-align: left;
  margin-bottom: 18px;
}
.about-copy p { font-size: 0.98rem; }
.about-founders {
  font-size: 0.9rem;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--beige-2);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
}
.about-founders strong { color: var(--green-deep); }

.about-photos {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 14px;
  align-items: end;
}
.about-photo {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--white);
}
.about-photo img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}
.about-photo-secondary img { height: 170px; }
.about-photo figcaption {
  font-size: 0.76rem;
  color: var(--ink-soft);
  padding: 8px 12px;
}

/* ---------- Projeto árvores ---------- */
.tree-section {
  background:
    radial-gradient(900px 400px at 90% 0%, rgba(244, 207, 107, 0.14), transparent 60%),
    linear-gradient(160deg, var(--green-deep), var(--green-deep-2));
}
.tree-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.tree-copy p { color: var(--beige); opacity: 0.92; font-size: 0.98rem; }
.tree-copy .eyebrow { margin-bottom: 10px; }
.tree-title {
  color: var(--white);
  font-size: clamp(1.6rem, 3.2vw, 2.2rem);
  margin-bottom: 18px;
}
.tree-number { color: var(--gold-light); }

.tree-photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.tree-photo {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--beige);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}
.tree-photo img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  display: block;
}
.tree-photo figcaption {
  font-size: 0.76rem;
  color: var(--ink-soft);
  padding: 8px 12px;
}

/* ---------- Oferta ---------- */
.offer-section {
  background: linear-gradient(160deg, var(--cacao-brown-dark), var(--cacao-brown) 65%, #5a3a24);
}
.offer-card {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  background: var(--beige);
  border-radius: var(--radius-lg);
  padding: 44px 36px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(227, 172, 46, 0.4);
}
.eyebrow-light { color: var(--cacao-brown); }
.offer-card h2 { margin-bottom: 14px; }
.offer-summary { font-size: 0.98rem; margin-bottom: 26px; }
.offer-price-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin-bottom: 24px;
}
.offer-price {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--green-deep);
}
.offer-promo-note { font-size: 0.9rem; color: var(--ink-soft); }
.offer-tree-note {
  margin: 18px 0 0;
  font-size: 0.86rem;
  color: var(--green-deep);
  font-weight: 500;
}
.offer-fineprint {
  margin-top: 14px;
  font-size: 0.82rem;
  color: #8a4a1f;
  background: #fbe9d2;
  border-radius: 8px;
  padding: 10px 14px;
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--beige-2);
  border-radius: var(--radius-sm);
  padding: 4px 20px;
  margin-bottom: 12px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  padding: 16px 0;
  color: var(--green-deep);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--gold);
  margin-left: 12px;
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding-bottom: 16px; margin-bottom: 0; font-size: 0.94rem; }

.faq-pending-note {
  max-width: 760px;
  margin: 28px auto 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--ink-soft);
  opacity: 0.85;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--green-deep);
  color: var(--beige);
  padding: 40px 0 90px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-brand-row { display: inline-flex; align-items: center; gap: 8px; }
.footer-brand-row img { flex-shrink: 0; }
.footer-tagline { color: var(--beige); opacity: 0.8; margin: 4px 0 0; font-size: 0.9rem; }
.footer-links {
  list-style: none;
  display: flex;
  gap: 20px;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}
.footer-links a { text-decoration: none; color: var(--beige); opacity: 0.85; font-size: 0.9rem; }
.footer-links a:hover { opacity: 1; color: var(--gold-light); }

/* ---------- Sticky mobile CTA ---------- */
.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 150;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: var(--cream);
  border-top: 1px solid var(--beige-2);
  padding: 10px 16px;
  padding-bottom: max(10px, env(safe-area-inset-bottom));
  box-shadow: 0 -8px 20px rgba(74, 46, 28, 0.12);
}
.sticky-cta-price { display: flex; flex-direction: column; line-height: 1.1; }
.sticky-cta-price strong { color: var(--green-deep); font-size: 1.1rem; }
.sticky-cta-price span { font-size: 0.72rem; color: var(--ink-soft); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .ebook-mockup { margin: 0 auto; }
  .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .benefit-list { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .about-photos { order: -1; }
  .tree-grid { grid-template-columns: 1fr; }
  .stat-banner-inner { text-align: center; flex-direction: column; gap: 6px; }
}

@media (max-width: 720px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--green-deep);
    flex-direction: column;
    padding: 12px 20px 20px;
    gap: 14px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .header-actions .btn-sm { display: none; }

  .audience-grid { grid-template-columns: 1fr; }
  .tabs-nav { justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; }
  .tab-btn { flex-shrink: 0; }
  .tab-panel { padding: 26px 22px; }
  .about-photos { grid-template-columns: 1fr; }
  .about-photo img, .about-photo-secondary img { height: 200px; }
  .section-title-left { text-align: center; }

  .sticky-cta { display: flex; }
  .site-footer { padding-bottom: 96px; }
  body { padding-bottom: 0; }
}

@media (min-width: 721px) {
  .sticky-cta { display: none !important; }
}