/* style.css - Dark Mode Personalizado */
:root {
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-darker: #0a0a0a;
  --text-primary: #ffffff;
  --text-secondary: #e0e0e0;
  --text-gray: #a0a0a0;
  --accent-primary: #6c5ce7;
  --accent-secondary: #a29bfe;
  --border-color: #2a2a2a;
  --card-hover: #252525;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Header e Navegação */
.header {
  background-color: rgba(15, 15, 15, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

.navbar-brand {
  color: var(--text-primary) !important;
  font-weight: bold;
  font-size: 1.5rem;
}

.navbar-brand i {
  color: var(--accent-primary);
}

.nav-link {
  color: var(--text-gray) !important;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary) !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 80%;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(108, 92, 231, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.gradient-text {
  background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Seções */
.section-padding {
  padding: 100px 0;
}

.bg-darker {
  background-color: var(--bg-darker);
}

.section-title {
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 60px;
  position: relative;
  padding-bottom: 20px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 2px;
}

/* Cards */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
  height: 100%;
}

.card:hover {
  transform: translateY(-10px);
  background-color: var(--card-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.card-body {
  padding: 30px;
}

.card h3 {
  color: var(--text-primary);
  font-size: 1.5rem;
  margin-bottom: 15px;
}

.text-gray {
  color: var(--text-gray);
}

/* Badges */
.badge {
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: 500;
}

.badge.bg-primary {
  background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary)) !important;
}

/* Concept Tips */
.concept-tip {
  margin-top: 20px;
  padding: 15px;
  background-color: rgba(108, 92, 231, 0.1);
  border-radius: 12px;
  color: var(--text-gray);
  display: flex;
  align-items: center;
  gap: 10px;
}

.concept-tip i {
  color: var(--accent-primary);
}

/* Case Cards */
.case-card .case-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.case-icon i {
  font-size: 24px;
  color: white;
}

.problem {
  color: #ffffff;
  font-weight: 500;
  margin: 15px 0;
  padding: 10px;
  background-color: rgba(255, 107, 107, 0.1);
  border-radius: 8px;
}

.solution {
  margin-top: 20px;
  padding: 15px;
  background-color: rgba(0, 255, 0, 0.05);
  border-radius: 8px;
  color: var(--text-gray);
}

/* Timeline */
.timeline {
  position: relative;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
}

.timeline-item {
  position: relative;
  padding-left: 80px;
  margin-bottom: 40px;
}

.time-badge {
  position: absolute;
  left: 0;
  top: 0;
  width: 60px;
  height: 60px;
  background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: white;
  box-shadow: 0 10px 20px rgba(108, 92, 231, 0.3);
}

/* Comparison Cards */
.comparison-card .card-header {
  background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  padding: 30px;
  border: none;
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  margin-bottom: 15px;
  color: var(--text-gray);
}

.feature-list i {
  margin-right: 10px;
}

.example-box {
  margin-top: 20px;
  padding: 20px;
  background-color: var(--bg-primary);
  border-radius: 12px;
  min-height: 100px;
}

.flex-example {
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: center;
}

.flex-example div {
  width: 50px;
  height: 50px;
  background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 8px;
}

.grid-example {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.grid-example div {
  height: 50px;
  background: linear-gradient(45deg, var(--accent-secondary), var(--accent-primary));
  border-radius: 8px;
}

/* FAQ Cards */
.faq-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 30px;
  transition: all 0.3s ease;
}

.faq-card:hover {
  transform: translateX(10px);
  border-color: var(--accent-primary);
}

/* Buttons */
.btn-primary {
  background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary));
  border: none;
  padding: 12px 30px;
  border-radius: 30px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(108, 92, 231, 0.4);
}

.btn-outline-light {
  border: 2px solid var(--text-gray);
  color: var(--text-primary);
  padding: 12px 30px;
  border-radius: 30px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-outline-light:hover {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-3px);
}

/* Footer */
.footer {
  background-color: var(--bg-darker);
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  color: var(--text-gray);
}

/* Scroll Suave */
html {
  scroll-behavior: smooth;
}

/* Foco na seção alvo */
section:target {
  animation: highlight 1.5s ease;
}

@keyframes highlight {
  0%,
  100% {
    background-color: transparent;
  }
  30%,
  70% {
    background-color: rgba(108, 92, 231, 0.1);
  }
}

/* Responsividade */
@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }

  .hero-section h1 {
    font-size: 2.5rem;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    padding-left: 60px;
  }

  .time-badge {
    width: 40px;
    height: 40px;
    font-size: 0.9rem;
  }

  .section-padding {
    padding: 60px 0;
  }
}

@media (max-width: 576px) {
  .hero-section h1 {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .card-body {
    padding: 20px;
  }
}

/* Animações de entrada */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

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

.paragraph-text,
h4,
.example-box,
.alternativa,
.question-text,
.row .mt-4,
.summary-item,
.question-number {
  color: var(--text-gray);
}