/* Google Fonts - Outfit */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
  /* Colors */
  --bg-primary: #141516;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-border: rgba(255, 255, 255, 0.08);
  --accent-cyan: #CAF3FF;
  --text-main: #FFFFFF;
  --text-muted: #9CA3AF;

  /* Spacing */
  --container-width: 1200px;
  --padding-section: 80px;

  /* 3D Book */
  --book-width: 300px;
  --book-height: 450px;
  --book-thickness: 50px;
  --spine-color: #232323;
  --page-color: #f5f5f5;
  --cover-bg: #1e1e1e;
}

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

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 500;
  line-height: 1.2;
}

h1 {
  font-size: 3.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

p {
  color: var(--text-muted);
  font-size: 1.125rem;
}

em {
  font-family: 'Times New Roman', serif;
  /* Simulating the italic serif mix */
  font-style: italic;
  color: var(--accent-cyan);
}

a {
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.8;
}

ul {
  list-style: none;
}

/* Utilities */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.text-center {
  text-align: center;
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.flex-col {
  flex-direction: column;
}

.gap-1 {
  gap: 1rem;
}

.gap-2 {
  gap: 2rem;
}

.gap-4 {
  gap: 4rem;
}

/* Scroll Offset for Anchors */
#metodo {
  scroll-margin-top: 30px;
}

#conteudo {
  scroll-margin-top: 120px;
}

#pricing {
  scroll-margin-top: 10px;
}

/* Buttons */
.btn {
  padding: 12px 24px;
  border-radius: 9999px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-block;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--accent-cyan);
  color: #000;
  border: 1px solid var(--accent-cyan);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(202, 243, 255, 0.2);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  border-color: var(--text-main);
  background-color: rgba(255, 255, 255, 0.05);
}

/* Navbar */
.navbar {
  padding: 10px 0;
  border: 1px solid var(--bg-card-border);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 10px;
  z-index: 1000;
  background: rgba(20, 21, 22, 0.8);
  border-radius: 24px;
  margin: 20px auto;
  width: 95%;
  max-width: var(--container-width);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 400;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
}

/* Hero Section */
.hero {
  padding: 80px 0 0;
  position: relative;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto 100px;
  /* Increased from 60px */
}

.hero-visual {
  width: 100%;
  border-radius: 16px;
  /* Full rounded corners */
  overflow: hidden;
  box-shadow: 0 -20px 80px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: #1e1e1e;
  /* Placeholder for image */
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-visual img {
  width: 100%;
  height: auto;
  display: block;
}

/* Glow effects */
.glow-spot {
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(202, 243, 255, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

.glow-top-right {
  top: -100px;
  right: 0;
}

.glow-bottom-left {
  bottom: 0;
  left: -100px;
}


/* Features Section */
.features {
  padding: var(--padding-section) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  padding: 2rem;
  border-radius: 16px;
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.2);
}

.icon-box {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card p {
  font-size: 0.95rem;
}

/* Workflow / Friction */
.workflow {
  padding: var(--padding-section) 0;
}

.workflow-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.workflow-text h2 {
  font-size: 3rem;
  line-height: 1.1;
}

.device-mockup {
  background: #222;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #444;
}

/* Pricing */
.pricing {
  padding: var(--padding-section) 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  padding: 2.5rem;
  border-radius: 20px;
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card.highlight {
  background: linear-gradient(135deg, rgba(202, 243, 255, 0.05) 0%, rgba(202, 243, 255, 0.01) 100%);
  border-color: rgba(202, 243, 255, 0.3);
}

.price {
  font-size: 3rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}

.price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

.features-list {
  margin: 2rem 0;
  flex-grow: 1;
}

.features-list li {
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.9);
}

.check-icon {
  color: var(--accent-cyan);
}

/* Footer */
footer {
  padding: 60px 0 40px;
  margin-top: 60px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  :root {
    --padding-section: 60px;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  /* Navbar */
  .nav-links {
    display: none;
  }

  /* Layout Adjustments */
  .hero-content {
    padding: 0 10px;
  }

  .workflow-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .footer-content {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .pricing-grid {
    padding: 0 10px;
  }

  .card,
  .pricing-card {
    padding: 1.5rem;
  }
}

/* 3D Book Component */

.book-scene {
  width: var(--book-width);
  height: var(--book-height);
  perspective: 2000px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 50px auto;
  /* Initial State (Hidden) - CONTROLLED HERE */
  opacity: 0;
  transition: opacity 1.5s ease-out;
}

.book {
  width: var(--book-width);
  height: var(--book-height);
  position: relative;
  transform-style: preserve-3d;
  transform: translateY(100px) rotateY(-40deg);
  transition: transform 1.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Face Commons - Center Everything */
.book-face {
  position: absolute;
  top: 50%;
  left: 50%;
  backface-visibility: hidden;
}

/* Front (Cover) */
.book-front {
  width: var(--book-width);
  height: var(--book-height);
  margin-left: calc(var(--book-width) / -2);
  margin-top: calc(var(--book-height) / -2);
  transform: translateZ(calc(var(--book-thickness) / 2));
  background: var(--cover-bg);
  border-radius: 4px 8px 8px 4px;
  overflow: hidden;
}

.book-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px 8px 8px 4px;
}

/* Back */
.book-back {
  width: var(--book-width);
  height: var(--book-height);
  margin-left: calc(var(--book-width) / -2);
  margin-top: calc(var(--book-height) / -2);
  transform: rotateY(180deg) translateZ(calc(var(--book-thickness) / 2));
  background: var(--spine-color);
  border-radius: 4px 8px 8px 4px;
}

/* Spine (Left) */
.book-spine {
  width: var(--book-thickness);
  height: var(--book-height);
  margin-left: calc(var(--book-thickness) / -2);
  margin-top: calc(var(--book-height) / -2);
  transform: translateX(calc(var(--book-width) / -2)) rotateY(-90deg);
  background: var(--spine-color);
}

/* Pages (Right) */
.book-pages {
  width: var(--book-thickness);
  height: calc(var(--book-height) - 10px);
  margin-left: calc(var(--book-thickness) / -2);
  margin-top: calc((var(--book-height) - 10px) / -2);
  transform: translateX(calc(var(--book-width) / 2)) rotateY(90deg);
  background: linear-gradient(to right, #e0e0e0, #fff 20%, #e0e0e0 40%, #fff 60%, #e0e0e0 80%, #fff);
  background-size: 4px 100%;
}

/* Top */
.book-top {
  width: var(--book-width);
  height: var(--book-thickness);
  margin-left: calc(var(--book-width) / -2);
  margin-top: calc(var(--book-thickness) / -2);
  transform: translateY(calc(var(--book-height) / -2)) rotateX(90deg);
  background: linear-gradient(to bottom, #f0f0f0, #e0e0e0);
}

/* Bottom */
.book-bottom {
  width: var(--book-width);
  height: var(--book-thickness);
  margin-left: calc(var(--book-width) / -2);
  margin-top: calc(var(--book-thickness) / -2);
  transform: translateY(calc(var(--book-height) / 2)) rotateX(-90deg);
  background: linear-gradient(to top, #f0f0f0, #e0e0e0);
}


/* VISIBLE STATE - Animation */
.book-scene.is-visible {
  opacity: 1;
}

.book-scene.is-visible .book {
  transform: translateY(0) rotateY(25deg) rotateX(10deg) rotateZ(-2deg);
}

/* SHADOW */
.book-shadow {
  position: absolute;
  width: var(--book-width);
  height: 60px;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.5) 0%, transparent 70%);
  bottom: -30px;
  left: 0;
  transform: rotateX(90deg) scale(0.8);
  opacity: 0;
  transition: opacity 1.5s ease-out, transform 1.5s ease-out;
  filter: blur(10px);
  z-index: -1;
}

.book-scene.is-visible .book-shadow {
  opacity: 1;
  transform: rotateX(90deg) scale(1);
  bottom: -40px;
}

/* Overrides */
.device-mockup:has(.book-scene) {
  background: transparent;
  border: none;
  box-shadow: none;
  overflow: visible;
}

/* Canvas Background */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  /* Let clicks pass through */
}

/* Reveal on Scroll Animation */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}

.reveal-slow {
  transition-duration: 1.5s;
  /* Slower duration */
}

.reveal-slower {
  transition-duration: 2.5s;
  /* Extra slow duration */
}

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

/* Hero Image - Start Hidden */
#hero-image {
  opacity: 0;
  transform: translateY(30px);
}

#hero-image.reveal-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 1.5s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}