/* Section 4 - O que você vai aprender na imersão */

/* CSS Custom Properties - Dark Red Neon Palette (baseado no formulario.css) */
:root {
  /* Dark Background Colors */
  --bg-primary: #0a0a0a;
  --bg-secondary: #ffffff;
  --bg-tertiary: #906803;
  --bg-card: #000000;
  --bg-elevated: #252525;
  
  /* Red Colors */
  --red-primary: #b89337;
  --red-secondary: #906803;
  --red-dark: #990026;
  --red-light: #ff3366;
  --red-glow: rgba(249, 75, 0, 0.4);
  
  /* Neon Colors */
  --neon-cyan: #ffffff;
  --neon-pink: #ff00ff;
  --neon-green: #00ff41;
  --neon-blue: #0080ff;
  --neon-purple: #8000ff;
  --neon-yellow: #ffff00;
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-muted: #000000;
  --text-accent: var(--neon-cyan);
  
  /* Gradients */
  --gradient-red: linear-gradient(135deg, var(--red-primary) 0%, var(--red-secondary) 100%);
  --gradient-neon: linear-gradient(135deg, #ff9200 0%, #d65609 100%);
  --gradient-dark: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  --gradient-glow: linear-gradient(135deg, var(--red-glow) 0%, rgba(0, 255, 255, 0.3) 100%);
  
  /* Typography */
  --font-primary: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  
  /* Shadows & Glows */
  --shadow-red: 0 0 20px var(--red-glow);
  --shadow-cyan: 0 0 20px rgba(0, 255, 255, 0.5);
  --shadow-pink: 0 0 20px rgba(255, 0, 255, 0.5);
  --glow-red: 0 0 40px var(--red-glow);
  --glow-cyan: 0 0 40px rgba(0, 255, 255, 0.3);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  
  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
}

.section4 {
  background: var(--bg-primary);
  color: var(--text-primary);
  padding: var(--space-3xl) 0;
  font-family: var(--font-primary);
  position: relative;
  overflow: hidden;
}

/* Fundo animado diferenciado */
.section4::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 30% 30%, rgba(249, 75, 0, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(0, 255, 255, 0.04) 0%, transparent 50%);
  background-size: 100% 100%;
  animation: backgroundPulse 10s ease-in-out infinite;
  z-index: 1;
  pointer-events: none;
}

@keyframes backgroundPulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

.container-section4 {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  position: relative;
  z-index: 2;
}

/* Header da seção */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section4 h2 {
  font-family: var(--font-primary);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-accent), #d65609); /* gradiente neon */
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: var(--glow-cyan);
  margin-bottom: var(--space-lg);
  line-height: 1.2;
}

/* Divider elegante */
.divider {
  width: 100px;
  height: 2px;
  background: var(--gradient-neon);
  margin: 0 auto;
  border-radius: var(--radius-sm);
  position: relative;
  box-shadow: var(--glow-cyan);
}

.divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background: var(--neon-cyan);
  border-radius: 50%;
  box-shadow: var(--glow-cyan);
}

/* Grid de aprendizados */
.learning-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

/* Cards de aprendizado */
.learning-card {
  background: var(--bg-card);
  border: 1px solid var(--red-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  text-align: center;
  box-shadow: var(--shadow-red);
}

.learning-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-glow);
  opacity: 0;
  transition: var(--transition-normal);
}

.learning-card:hover {
  transform: translateY(-12px) scale(1.02);
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
}

.learning-card:hover::before {
  opacity: 0.15;
}

.learning-card > * {
  position: relative;
  z-index: 1;
}

/* Ícones dos cards */
.card-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  box-shadow: var(--shadow-red);
  transition: var(--transition-normal);
}

.learning-card:hover .card-icon {
  box-shadow: var(--glow-red);
  transform: scale(1.1) rotate(5deg);
}

.card-icon svg {
  width: 32px;
  height: 32px;
  color: var(--text-primary);
}

/* Títulos dos cards */
.card-title {
  font-family: var(--font-primary);
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

/* Descrições dos cards */
.card-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Card da nota final */
.section4-note-card {
  background: var(--bg-card);
  border: 2px solid var(--red-primary);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-red);
  transition: var(--transition-normal);
  max-width: 800px;
  margin: 0 auto;
}

.section4-note-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-glow);
  opacity: 0.1;
  animation: noteGlow 10s ease-in-out infinite;
}

@keyframes noteGlow {
  0%, 100% { opacity: 0.1; }
  50% { opacity: 0.2; }
}

.section4-note-card:hover {
  transform: translateY(-6px);
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
}

.note-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-neon);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  box-shadow: var(--glow-cyan);
  position: relative;
  z-index: 1;
}

.note-icon svg {
  width: 48px;
  height: 48px;
  color: var(--text-primary);
}

.section4-note {
  font-size: clamp(1.1rem, 2.2vw, 1.3rem);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.6;
  margin: 0;
  position: relative;
  z-index: 1;
}

/* Responsividade */
@media (max-width: 1024px) {
  .container-section4 {
    padding: 0 var(--space-md);
  }
  
  .learning-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  }
}

@media (max-width: 768px) {
  .section4 {
    padding: var(--space-2xl) 0;
  }
  
  .learning-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .learning-card {
    padding: var(--space-lg);
  }
  
  .section4-note-card {
    padding: var(--space-lg);
  }
  
  .card-icon {
    width: 60px;
    height: 60px;
  }
  
  .card-icon svg {
    width: 24px;
    height: 24px;
  }
}

@media (max-width: 480px) {
  .container-section4 {
    padding: 0 var(--space-sm);
  }
  
  .learning-card,
  .section4-note-card {
    padding: var(--space-md);
  }
  
  .note-icon {
    width: 60px;
    height: 60px;
  }
  
  .note-icon svg {
    width: 36px;
    height: 36px;
  }
  
  .learning-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .section4::before,
  .section4-note-card::before {
    animation: none;
  }
  
  .learning-card,
  .section4-note-card,
  .card-icon {
    transition: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .section4 {
    --bg-primary: #000000;
    --text-primary: #ffffff;
    --text-secondary: #ffffff;
  }
  
  .learning-card,
  .section4-note-card {
    border-color: #ffffff;
    background: #000000;
  }
}