:root {
  /* Cores da Identidade Visual meetAcademy */
  --preto: #000000;
  --azul-meet: #003580;
  --cinza-1: #1a1a1a;
  --cinza-2: #4a4a4a;
  --cinza-3: #8a8a8a;
  --cinza-4: #c4c4c4;
  --off-white: #e8e8e2;
  --branco: #ffffff;
  --bg-dark: #000000;
  --bg-dark-accent: #111111;
  --verde-neon: #2FD761;

  /* Fontes */
  --font-main: 'Montserrat', sans-serif;
  
  /* Utilities */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --glass-bg: rgba(26, 26, 26, 0.7);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--branco);
  overflow-x: hidden;
  line-height: 1.6;
}

/* Tipografia */
h1, h2, h3, h4, h5, h6 {
  color: var(--branco);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

p, span, div {
  color: var(--cinza-4);
}

.text-gradient {
  background: linear-gradient(90deg, #FFFFFF 0%, #A0B4D0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-blue {
  color: var(--azul-meet);
}

.text-green {
  color: var(--verde-neon);
}

.text-silver {
  color: var(--off-white);
}

/* Navegação */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: var(--glass-border);
  transition: var(--transition-smooth);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--branco);
  letter-spacing: -0.02em;
}

.logo span.meet {
  font-weight: 400;
}

.logo svg {
  width: 24px;
  height: 26px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--cinza-4);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: var(--transition-smooth);
}

.nav-links a:hover {
  color: var(--branco);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  background-color: var(--azul-meet);
  color: var(--branco) !important;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 4px;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
}

.btn-primary:hover {
  background-color: transparent;
  border-color: var(--azul-meet);
  color: var(--azul-meet) !important;
  box-shadow: 0 0 15px rgba(0, 53, 128, 0.6);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 100px 5% 40px 5%; /* Ajustado para espaçamento do header */
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 80% 50%, rgba(0, 53, 128, 0.15) 0%, transparent 50%);
}

.hero-content {
  flex: 1;
  max-width: 600px;
  z-index: 2;
}

.tagline {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--verde-neon);
  margin-bottom: 1.5rem;
  display: block;
}

.hero h1 {
  font-weight: 800;
  font-size: clamp(3rem, 5vw, 4.5rem);
  margin-bottom: 1.5rem;
}

.hero p.subtitle {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--cinza-4);
  margin-bottom: 2.5rem;
  max-width: 500px;
}

.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2;
  position: relative;
}

/* E-book Capa Image */
.ebook-image {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.6);
  transition: transform 0.5s ease;
}

.hero-ebook {
  width: 320px;
  transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
}

.hero-ebook:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg) scale(1.05);
}

.showcase-ebook {
  display: block;
  width: 380px;
  margin: 0 auto;
}

.showcase-ebook:hover {
  transform: scale(1.03);
}

/* Quote Section */
.quote-section {
  padding: 8rem 5%;
  text-align: center;
  background-color: var(--off-white);
}

.quote-text {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--preto);
}

/* Sections */
section {
  padding: 6rem 5%;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--cinza-4);
  max-width: 600px;
  margin: 0 auto;
  font-weight: 300;
}

/* About / Escola */
.about {
  background: var(--bg-dark-accent);
  position: relative;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 4rem;
}

.feature-card {
  background: var(--bg-dark);
  border: var(--glass-border);
  padding: 2.5rem;
  border-radius: 8px;
  transition: var(--transition-smooth);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 53, 128, 0.4);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(47, 215, 97, 0.15);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: var(--verde-neon);
  stroke-width: 2;
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.feature-card p {
  font-size: 0.9rem;
  font-weight: 300;
}

/* Produto Detalhe */
.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.product-info h3 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.product-info p {
  font-weight: 300;
  margin-bottom: 2rem;
}

.benefits-list {
  list-style: none;
  margin-bottom: 3rem;
}

.benefits-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.2rem;
  font-weight: 400;
  color: var(--branco);
}

.benefits-list li svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  fill: var(--verde-neon);
  margin-top: 2px;
}

/* Footer */
footer {
  background: #050505;
  padding: 4rem 5%;
  border-top: 1px solid #1a1a1a;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-brand p {
  color: var(--cinza-4);
  font-size: 0.85rem;
  margin-top: 1rem;
  max-width: 300px;
  font-weight: 300;
}

.footer-links {
  display: flex;
  gap: 4rem;
}

.link-group h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cinza-4);
}

.link-group ul {
  list-style: none;
}

.link-group ul li {
  margin-bottom: 0.6rem;
}

.link-group ul a {
  color: var(--cinza-3);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition-smooth);
}

.link-group ul a:hover {
  color: var(--branco);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid #1a1a1a;
  font-size: 0.75rem;
  color: var(--cinza-3);
}

/* Sobre o Autor */
.about-author {
  padding: 6rem 5%;
}

.author-container {
  display: flex;
  align-items: center;
  gap: 4rem;
  max-width: 1000px;
  margin: 0 auto;
}

.author-photo {
  flex: 1;
  display: flex;
  justify-content: center;
}

.author-img {
  width: 100%;
  max-width: 420px;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
  border: var(--glass-border);
}

.author-bio {
  flex: 1.2;
}

.author-bio h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}

.author-bio p {
  color: var(--cinza-4);
  font-weight: 300;
  line-height: 1.8;
}

/* Utilities: Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 120px;
    padding-bottom: 60px;
  }
  
  .hero-content {
    margin-bottom: 4rem;
  }
  
  .hero p.subtitle {
    margin: 0 auto 2rem auto;
  }
  
  .nav-links {
    display: none;
  }
  
  .product-showcase {
    grid-template-columns: 1fr;
  }
  
  .showcase-ebook, .hero-ebook {
    margin: 0 auto;
  }
  
  .author-container {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }
}