/* =========================================================
   CruEnglish — Design tokens
   Navy #082B5C · Blue #2F8FE5 · Light Blue #EAF5FC · White #FFFFFF
   Type: Manrope (display) + Inter (body)
========================================================= */
:root{
  --navy: #082B5C;
  --navy-deep: #051A3B;
  --blue: #2F8FE5;
  --blue-dark: #1E6FBE;
  --light-blue: #EAF5FC;
  --white: #FFFFFF;
  --ink: #14213D;
  --muted: #5B6B85;
  --line: #DCE7F2;
  --danger: #E2543A;

  --font-display: 'Manrope', sans-serif;
  --font-body: 'Inter', sans-serif;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 20px 40px -20px rgba(8,43,92,0.25);
  --wrap: 1160px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3{
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--navy);
  line-height: 1.2;
  margin: 0 0 16px;
}
p{ margin: 0 0 16px; color: var(--muted); }
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style:none; margin:0; padding:0; }
.wrap{ max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.accent-text{ color: var(--blue); }

:focus-visible{
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

/* ---------- Motion: entrance + scroll reveal ---------- */
@keyframes fadeSlideUp{
  from{ opacity: 0; transform: translateY(22px); }
  to{ opacity: 1; transform: translateY(0); }
}
.hero-content > *{
  opacity: 0;
  animation: fadeSlideUp 0.7s cubic-bezier(.2,.7,.3,1) forwards;
}
.hero-content .eyebrow{ animation-delay: .05s; }
.hero-content .hero-title{ animation-delay: .18s; }
.hero-content .hero-sub{ animation-delay: .32s; }
.hero-content .btn{ animation-delay: .46s; }

.reveal{
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1);
}
.reveal.in-view{
  opacity: 1;
  transform: translateY(0);
}
.reveal-stagger.in-view > *{
  animation: fadeSlideUp .6s cubic-bezier(.2,.7,.3,1) forwards;
}
.reveal-stagger > *{ opacity: 0; }
.reveal-stagger.in-view > *:nth-child(1){ animation-delay: .05s; }
.reveal-stagger.in-view > *:nth-child(2){ animation-delay: .12s; }
.reveal-stagger.in-view > *:nth-child(3){ animation-delay: .19s; }
.reveal-stagger.in-view > *:nth-child(4){ animation-delay: .26s; }
.reveal-stagger.in-view > *:nth-child(5){ animation-delay: .33s; }
.reveal-stagger.in-view > *:nth-child(6){ animation-delay: .40s; }
.reveal-stagger.in-view > *:nth-child(7){ animation-delay: .47s; }
.reveal-stagger.in-view > *:nth-child(8){ animation-delay: .54s; }
.reveal-stagger.in-view > *:nth-child(9){ animation-delay: .61s; }
.reveal-stagger.in-view > *:nth-child(10){ animation-delay: .68s; }

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.98rem;
  border: none;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn-primary{
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 12px 24px -10px rgba(47,143,229,0.55);
}
.btn-primary:hover{ background: var(--blue-dark); transform: translateY(-1px); }
.btn-lg{ padding: 17px 34px; font-size: 1.05rem; }
.icon-wa{ width: 20px; height: 20px; fill: currentColor; flex-shrink:0; }

/* ---------- Header ---------- */
.site-header{
  position: fixed; top:0; left:0; right:0; z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
  --header-text: var(--navy);
}
.site-header.scrolled{
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 4px 20px -8px rgba(8,43,92,0.12);
  --header-text: var(--navy);
}
.header-inner{
  display:flex; align-items:center; justify-content: space-between;
  height: 76px; gap: 24px;
}
.logo{ display:flex; align-items:center; gap:8px; flex-shrink:0; }
.logo-img{ height: 38px; width:auto; }
.logo-fallback{
  display:none;
  font-family: var(--font-display); font-weight:800; font-size:1.3rem;
  color: var(--header-text);
  transition: color .3s ease;
}
.main-nav{ display:flex; gap: 28px; margin-left: auto; margin-right: 24px; }
.main-nav a{
  position: relative;
  font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
  color: var(--header-text); opacity: 0.85;
  padding-bottom: 4px;
  transition: color .3s ease;
}
.main-nav a::after{
  content:"";
  position:absolute; left:0; bottom:0;
  width:0; height:2px;
  background: var(--blue);
  transition: width .25s ease;
}
.main-nav a:hover{ opacity: 1; color: var(--blue); }
.main-nav a:hover::after{ width: 100%; }
.btn-nav{ padding: 11px 22px; font-size: 0.9rem; }
.nav-toggle{
  display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px;
}
.nav-toggle span{ width: 24px; height: 2px; background: var(--header-text); border-radius: 2px; transition: background .3s ease; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--light-blue);
}
.hero .wrap{ width: 100%; }
#metodo, #para-quem, #temas, #professora, #faq{ scroll-margin-top: 90px; }
.hero-media{
  position: absolute; inset:0;
  background: url('images/hero-desktop.jpg') center right / cover no-repeat;
  background-color: var(--light-blue);
}
.hero-content{
  position: relative; z-index: 2;
  max-width: 620px;
  margin-left: 0;
  padding-top: 60px; padding-bottom: 60px;
}
.eyebrow{
  display:inline-block;
  font-family: var(--font-display); font-weight:700; font-size: 0.8rem;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--blue-dark);
  background: var(--white);
  border: 1px solid var(--line);
  padding: 8px 16px; border-radius: 999px;
  margin-bottom: 24px;
  box-shadow: 0 6px 16px -8px rgba(8,43,92,0.25);
}
.hero-title{
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3.1rem);
  font-weight: 800;
  margin-bottom: 20px;
}
.hero-title .accent-text{ color: var(--blue); }
.hero-sub{
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 480px;
  margin-bottom: 32px;
}
.hero-trust{
  margin-top: 28px;
  display:flex; flex-wrap:wrap; gap: 10px;
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 500;
}
.hero-trust .dot{ opacity: 0.5; }

/* ---------- Sections generic ---------- */
.section{ padding: 96px 0; }
.section-muted{ background: var(--light-blue); }
.section-highlight{ background: var(--white); }
.section-dark{
  background: var(--navy-deep);
  color: var(--white);
}
.section-dark h2, .section-dark h3{ color: var(--white); }
.section-dark p{ color: rgba(255,255,255,0.75); }
.section-title{
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  max-width: 780px;
}
.section-title.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-sub{ max-width: 620px; font-size: 1.05rem; }
.section-sub.center{ margin-left:auto; margin-right:auto; text-align:center; }
.center-text{ text-align:center; }
.center-text .btn{ margin: 8px auto 0; }
/* Any heading/subtitle inside a centered block must also be centered as a box, not just its text */
.center-text .section-title,
.center-text .section-sub{
  margin-left:auto;
  margin-right:auto;
}
.section-note{ font-weight:600; color: var(--navy); max-width: 560px; margin: 0 auto 28px; }
.fine-print{ font-size:0.85rem; color: var(--muted); margin-top:16px; }

/* ---------- Compare (problem vs method) ---------- */
.compare-grid{
  display:grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 48px;
}
.compare-card{
  border-radius: var(--radius);
  padding: 40px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.compare-card:hover{ transform: translateY(-4px); }
.compare-dark:hover{ box-shadow: 0 26px 46px -20px rgba(8,43,92,0.4); }
.compare-light{
  background: var(--light-blue);
  border: 1px solid var(--line);
}
.compare-light h3{ color: var(--navy); }
.compare-dark{
  background: var(--navy);
  box-shadow: var(--shadow);
}
.compare-dark h3{ color: var(--white); }
.check-list li{
  position: relative;
  padding-left: 32px;
  margin-bottom: 16px;
  font-weight: 500;
  color: var(--ink);
  font-size: 0.98rem;
}
.compare-dark .check-list li,
.section-dark .check-list li{ color: rgba(255,255,255,0.9); }
.x-list li::before{
  content: "✕";
  position: absolute; left:0; top:0;
  width: 20px; height:20px;
  color: var(--danger);
  font-weight: 800; font-size: 0.85rem;
}
.ok-list li::before{
  content: "✓";
  position: absolute; left:0; top:0;
  width: 20px; height:20px;
  color: var(--blue);
  font-weight: 800; font-size: 0.9rem;
}
.compare-dark .ok-list li::before{ color: #7FC1FF; }
.section-dark .ok-list li::before{ color: var(--blue); }

/* ---------- Para quem ---------- */
.for-grid{
  display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items:center;
}
.for-media{
  border-radius: var(--radius);
  overflow:hidden;
  aspect-ratio: 4/5;
  background: linear-gradient(160deg, var(--blue), var(--navy));
}
.for-media img{ width:100%; height:100%; object-fit: cover; }
.for-card h2{ color: var(--white); }
.for-card .btn{ margin-top: 28px; }
.img-fallback{
  display:flex; align-items:center; justify-content:center;
}
.img-fallback img{ display:none; }

/* ---------- Stat strip ---------- */
.stat-strip{
  display:grid; grid-template-columns: repeat(4,1fr); gap: 20px; margin-top: 48px;
}
.stat-chip{
  position: relative;
  background: linear-gradient(155deg, var(--navy) 0%, var(--blue-dark) 100%);
  border-radius: var(--radius);
  padding: 30px 22px 26px;
  text-align:center;
  overflow: hidden;
  box-shadow: 0 20px 34px -16px rgba(8,43,92,0.45);
  transition: transform .25s ease, box-shadow .25s ease;
}
.stat-chip:hover{
  transform: translateY(-5px);
  box-shadow: 0 26px 40px -14px rgba(8,43,92,0.5);
}
.stat-chip strong{
  display:block; font-family: var(--font-display); font-size: 1.5rem; font-weight:800;
  line-height: 1.15;
  color: var(--white); margin-bottom: 8px;
}
.stat-chip span{
  font-size: 0.88rem; line-height:1.4;
  color: rgba(255,255,255,0.78);
}
.stat-chip span::first-letter{ text-transform: uppercase; }

/* ---------- Testimonials ---------- */
.testimonial-grid{
  display:grid; grid-template-columns: repeat(3,1fr); gap: 24px; margin-top: 40px;
}
.testimonial-card{
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.testimonial-card:hover{
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.testimonial-card p{ color: var(--ink); font-style: italic; margin-bottom: 20px; }
.example-tag{
  position: absolute; top: 14px; right: 14px;
  font-family: var(--font-display); font-weight: 700; font-size: 0.68rem;
  text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--blue-dark);
  background: var(--light-blue);
  border: 1px solid var(--line);
  padding: 4px 10px; border-radius: 999px;
}
.testimonial-author{ display:flex; align-items:center; gap: 12px; }
.avatar-initial{
  width: 42px; height:42px; border-radius:50%;
  background: var(--navy); color: var(--white);
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-display); font-weight:700;
  flex-shrink:0;
}
.testimonial-author strong{ display:block; font-size: 0.92rem; color: var(--navy); }
.testimonial-author span{ font-size: 0.8rem; color: var(--muted); }

/* ---------- Feature grid (o que você tem) ---------- */
.feature-grid{
  display:grid; grid-template-columns: repeat(3,1fr); gap: 24px;
  margin: 40px 0;
}
.feature-card{
  background: var(--light-blue);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 26px;
  text-align:left;
  transition: transform .25s ease, background .25s ease, box-shadow .25s ease;
}
.feature-card:hover{
  transform: translateY(-4px);
  background: var(--white);
  box-shadow: var(--shadow);
}
.feature-icon{ font-size: 1.8rem; display:inline-block; margin-bottom: 14px; }
.feature-card h3{ font-size: 1.1rem; margin-bottom: 8px; }
.feature-card p{ margin:0; font-size: 0.95rem; }

/* ---------- Topics grid ---------- */
.topics-grid{
  display:flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  margin-top: 44px;
}
.topic-card{
  width: calc(25% - 13.5px);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 26px 18px;
  text-align:center;
  transition: transform .15s ease, box-shadow .15s ease;
}
.topic-card:hover{ box-shadow: var(--shadow); transform: translateY(-3px); }
.topic-icon{ font-size: 1.6rem; display:block; margin-bottom: 12px; }
.topic-card h3{ font-size: 0.95rem; margin:0; color: var(--navy); }

/* ---------- Teacher bio ---------- */
.teacher-grid{
  display:grid; grid-template-columns: 0.85fr 1.15fr; gap: 56px; align-items:center;
}
.teacher-media{
  border-radius: var(--radius);
  overflow:hidden;
  aspect-ratio: 3/4;
  background: linear-gradient(160deg, var(--blue), var(--navy-deep));
}
.teacher-media img{ width:100%; height:100%; object-fit:cover; }
.teacher-content blockquote{
  margin: 28px 0 0;
  padding: 20px 24px;
  border-left: 3px solid var(--blue);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
  font-style: normal;
}
.teacher-content blockquote span{
  display:block; margin-top: 10px; font-weight:500; font-size:0.85rem; color: rgba(255,255,255,0.6);
}

/* ---------- CTA section ---------- */
.section-cta{
  background: linear-gradient(135deg, var(--navy), var(--blue-dark));
  color: var(--white);
}
.section-cta h2{ color: var(--white); }
.section-cta p{ color: rgba(255,255,255,0.85); }
.section-cta .fine-print{ color: rgba(255,255,255,0.65); }

/* ---------- FAQ ---------- */
.section-faqwrap{ background: var(--navy-deep); color: var(--white); }
.section-faqwrap h2{ color: var(--white); }
.faq-layout{
  display:grid; grid-template-columns: 1.4fr 0.9fr; gap: 40px; margin-top: 40px; align-items:start;
}
.faq-item{
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.faq-question{
  width:100%; text-align:left;
  background:none; border:none; cursor:pointer;
  color: var(--white);
  font-family: var(--font-display); font-weight:700; font-size: 1.02rem;
  padding: 22px 0;
  display:flex; align-items:center; justify-content:space-between; gap: 16px;
}
.faq-icon{
  flex-shrink:0; font-size: 1.3rem; font-weight:400;
  color: var(--blue);
  transition: transform .2s ease;
}
.faq-item.open .faq-icon{ transform: rotate(45deg); }
.faq-answer{
  max-height:0; overflow:hidden;
  transition: max-height .25s ease;
}
.faq-answer p{ color: rgba(255,255,255,0.7); padding-bottom: 22px; margin:0; }
.faq-side{
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 32px;
}
.faq-side h3{ color: var(--white); font-size: 1.2rem; }
.faq-side p{ color: rgba(255,255,255,0.7); font-size: 0.95rem; }

/* ---------- Footer ---------- */
.site-footer{
  background: var(--navy-deep);
  color: rgba(255,255,255,0.6);
  padding-top: 64px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.footer-main{
  display:grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-logo{ display:none; color: var(--white); font-size: 1.25rem; margin-bottom: 14px; }
.footer-logo-img{ height: 34px; width:auto; margin-bottom: 16px; }
.footer-brand p{ color: rgba(255,255,255,0.6); font-size: 0.92rem; max-width: 320px; margin:0; }
.footer-col h4{
  font-family: var(--font-display); font-weight:800; font-size: 0.85rem;
  text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--white); margin-bottom: 16px;
}
.footer-col{ display:flex; flex-direction:column; gap: 10px; }
.footer-col a{ color: rgba(255,255,255,0.65); font-size: 0.92rem; transition: color .2s ease; }
.footer-col a:hover{ color: var(--blue); }
.footer-social{ display: inline-flex; align-items: center; gap: 8px; }
.icon-instagram{ width: 18px; height: 18px; fill: currentColor; flex-shrink: 0; }
.footer-inner{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap: 12px;
  font-size: 0.85rem;
  padding: 24px 24px;
}
.footer-inner a:hover{ color: var(--white); }
.footer-credit a{
  color: rgba(255,255,255,0.75);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
}
.footer-credit a:hover{ color: var(--white); }
@media (max-width: 640px){
  .footer-main{ grid-template-columns: 1fr; gap: 32px; text-align:center; }
  .footer-brand p{ margin: 0 auto; }
  .footer-logo-img{ margin-left:auto; margin-right:auto; }
  .footer-col{ align-items: center; }
  .footer-social{ justify-content: center; }
  .footer-inner{ flex-direction: column; text-align:center; padding-bottom: 90px; }
}

/* ---------- Floating WhatsApp ---------- */
@keyframes waPulse{
  0%, 100%{ box-shadow: 0 12px 24px -8px rgba(47,143,229,0.6), 0 0 0 0 rgba(47,143,229,0.45); }
  50%{ box-shadow: 0 12px 24px -8px rgba(47,143,229,0.6), 0 0 0 10px rgba(47,143,229,0); }
}
.wa-float{
  position: fixed; right: 24px; bottom: 24px; z-index: 60;
  width: 58px; height: 58px; border-radius:50%;
  background: var(--blue);
  display:flex; align-items:center; justify-content:center;
  box-shadow: 0 12px 24px -8px rgba(47,143,229,0.6);
  transition: transform .15s ease;
  animation: waPulse 2.8s ease-in-out infinite;
}
.wa-float:hover{ transform: scale(1.08); animation-play-state: paused; }
.wa-float svg{ width: 28px; height:28px; fill: var(--white); }

/* =========================================================
   Responsive
========================================================= */
@media (max-width: 960px){
  .main-nav{
    display:none;
    position: absolute; top: 76px; left:0; right:0;
    background: var(--white);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 16px;
    box-shadow: 0 12px 20px -10px rgba(8,43,92,0.15);
  }
  .main-nav.nav-open{ display:flex; }
  .main-nav.nav-open a{ color: var(--navy); opacity: 1; }
  .main-nav a{ padding: 12px 0; border-bottom: 1px solid var(--line); }
  .main-nav a:last-child{ border-bottom:none; }
  .btn-nav{ display:none; }
  .nav-toggle{ display:flex; }
  .compare-grid{ grid-template-columns: 1fr; }
  .for-grid{ grid-template-columns: 1fr; }
  .for-media{ aspect-ratio: 4/5; }
  .for-card{ text-align: center; }
  .for-card .check-list{ text-align: left; }
  .for-card .btn{ margin-left:auto; margin-right:auto; }
  .stat-strip{ grid-template-columns: repeat(2,1fr); }
  .testimonial-grid{ grid-template-columns: 1fr; }
  .feature-grid{ grid-template-columns: 1fr; }
  .topic-card{ width: calc(50% - 9px); }
  .teacher-grid{ grid-template-columns: 1fr; gap: 32px; }
  .teacher-media{ aspect-ratio: 3/4; }
  .faq-layout{ grid-template-columns: 1fr; }
  .hero{ min-height: 92vh; padding-top: 0; display:block; }
  .hero-media{
    background-image: url('images/hero-mobile.jpg');
    background-position: top center;
  }
  .hero-content{
    max-width: 100%;
    text-align: center;
    padding-top: 330px;
    padding-bottom: 40px;
  }
  .hero-content .btn{ margin-left:auto; margin-right:auto; }
}

@media (max-width: 600px){
  .section{ padding: 64px 0; }
  .compare-card{ padding: 28px; }
  .topic-card{ width: calc(50% - 9px); }
  .stat-strip{ grid-template-columns: 1fr; max-width: 360px; margin-left:auto; margin-right:auto; }
  .hero-title{ font-size: 2rem; }
  .wa-float{ width: 52px; height:52px; }
}