/* ========================================
   VARIÁVEIS E RESET
   ======================================== */

:root {
  /* Cores Principais */
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-secondary: #8b5cf6;
  --color-accent: #06b6d4;
  
  /* Backgrounds */
  --bg-dark: #020617;
  --bg-dark-alt: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  
  /* Text */
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  
  /* Borders */
  --border-color: #334155;
  --border-light: #475569;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  
  /* Spacing */
  --container-width: 1280px;
  --section-padding: 80px;
  
  /* Transitions */
  --transition-base: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ========================================
   CONTAINER
   ======================================== */

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

/* ========================================
   HEADER
   ======================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(2, 6, 23, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-base);
}

.site-header.scrolled {
  background: rgba(2, 6, 23, 0.95);
  box-shadow: var(--shadow-md);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-md);
}

.logo-icon svg {
  width: 24px;
  height: 24px;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.ai-badge {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

/* Nav */

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition-base);
  position: relative;
}

.nav a:not(.nav-cta):hover {
  color: var(--color-primary);
}

.nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

.nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white !important;
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.nav-cta svg {
  width: 16px;
  height: 16px;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-base);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
}

.hero-gradient {
  position: absolute;
  top: -50%;
  left: -10%;
  width: 120%;
  height: 150%;
  background: radial-gradient(
    circle at 30% 20%,
    rgba(59, 130, 246, 0.15) 0%,
    rgba(139, 92, 246, 0.1) 40%,
    transparent 70%
  );
  animation: float 20s ease-in-out infinite;
}

.hero-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: slide 60s linear infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

@keyframes slide {
  0% { background-position: 0 0; }
  100% { background-position: 50px 50px; }
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-badge svg {
  width: 16px;
  height: 16px;
}

.hero h1 {
  font-size: 56px;
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px;
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  margin-bottom: 24px;
}

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

.stat-value {
  font-size: 32px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-color);
}

.hero-note {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 600px;
}

/* Hero Panel */

.hero-panel {
  display: flex;
  justify-content: flex-end;
}

.hero-card {
  background: var(--bg-card);
  border-radius: 24px;
  border: 1px solid var(--border-color);
  padding: 32px;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(10px);
  max-width: 500px;
  transition: var(--transition-base);
}

.hero-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 30px 40px -10px rgba(0, 0, 0, 0.7);
}

.card-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.ai-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.ai-icon svg {
  width: 24px;
  height: 24px;
}

.card-header h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}

.card-subtitle {
  font-size: 14px;
  color: var(--text-muted);
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.feature-list svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.card-note {
  display: flex;
  gap: 12px;
  padding: 16px;
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

.card-note svg {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition-base);
}

.btn svg {
  width: 20px;
  height: 20px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-light);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  background: rgba(59, 130, 246, 0.1);
}

.btn-large {
  padding: 16px 32px;
  font-size: 16px;
}

/* ========================================
   SECTIONS
   ======================================== */

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

.section-alt {
  background: var(--bg-dark-alt);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-badge {
  display: inline-flex;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section h2 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-intro {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.7;
}

.section-content {
  max-width: 600px;
}

.section-content p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* Section Grid */

.section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: flex-start;
}

/* ========================================
   CARDS
   ======================================== */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border-radius: 20px;
  border: 1px solid var(--border-color);
  padding: 32px;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-light);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.card-icon.blue {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-primary);
}

.card-icon.purple {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-secondary);
}

.card-icon.green {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.card-icon.orange {
  background: rgba(249, 115, 22, 0.1);
  color: #f97316;
}

.card-icon svg {
  width: 28px;
  height: 28px;
}

.card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card li {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
}

.card li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* Highlight Box */

.highlight-box {
  background: var(--bg-card);
  border-radius: 20px;
  border: 1px solid var(--border-color);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.highlight-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: 20px;
}

.highlight-icon svg {
  width: 28px;
  height: 28px;
}

.highlight-box h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
}

.highlight-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.highlight-box li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.highlight-box li svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ========================================
   EXAMPLES
   ======================================== */

.examples-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.example-card {
  background: var(--bg-card);
  border-radius: 20px;
  border: 1px solid var(--border-color);
  padding: 32px;
  transition: var(--transition-base);
}

.example-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-light);
}

.example-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.example-icon {
  font-size: 32px;
}

.example-header h3 {
  font-size: 20px;
  font-weight: 700;
}

.example-questions {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.question {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  transition: var(--transition-base);
}

.question:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.3);
}

.question svg {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

/* ========================================
   CTA SECTION
   ======================================== */

.cta-section {
  background: linear-gradient(135deg, 
    rgba(59, 130, 246, 0.1) 0%, 
    rgba(139, 92, 246, 0.1) 100%
  );
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.cta-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.cta-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 32px;
  box-shadow: var(--shadow-lg);
}

.cta-icon svg {
  width: 40px;
  height: 40px;
  color: white;
}

.cta-content h2 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

/* ========================================
   FOOTER
   ======================================== */

.site-footer {
  background: var(--bg-dark-alt);
  border-top: 1px solid var(--border-color);
  padding-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-logo-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-logo-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer-description {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition-base);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-tech {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
  :root {
    --section-padding: 60px;
  }
  
  .hero h1 {
    font-size: 42px;
  }
  
  .section h2 {
    font-size: 36px;
  }
  
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .section-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .examples-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero {
    padding: 80px 0 60px;
  }
  
  .hero h1 {
    font-size: 32px;
  }
  
  .hero-description {
    font-size: 16px;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }
  
  .stat-divider {
    display: none;
  }
  
  .section h2 {
    font-size: 28px;
  }
  
  .section-intro {
    font-size: 16px;
  }
  
  .cta-content h2 {
    font-size: 32px;
  }
  
  .cta-actions {
    flex-direction: column;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 28px;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
}