/* --- 1. Base e Reset --- */
@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&family=Open+Sans:wght@300;400;600&display=swap");

:root {
  /* Cores */
  --color-primary: #007bff; /* Azul vibrante */
  --color-secondary: #6c757d; /* Cinza suave */
  --color-accent: #ff9100; /* Laranja para destaque/CTA */
  --color-text-dark: #343a40; /* Texto escuro */
  --color-text-light: #f8f9fa; /* Texto claro (quase branco) */
  --color-bg-light: #f8f9fa; /* Fundo claro */
  --color-bg-dark: #212529; /* Fundo escuro */
  --color-overlay: rgba(0, 0, 0, 0.5); /* Overlay para imagens */

  /* Fontes */
  --font-heading: "Montserrat", sans-serif;
  --font-body: "Open Sans", sans-serif;

  /* Espaçamento */
  --spacing-sm: 10px;
  --spacing-md: 20px;
  --spacing-lg: 40px;
  --spacing-xl: 80px;

  /* Borda/Sombra */
  --border-radius-sm: 5px;
  --border-radius-md: 10px;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
}

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

html {
  scroll-behavior: smooth; /* Para smooth scroll na navegação */
}

body {
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  padding-top: 80px; /* Adiciona um padding-top padrão para acomodar o cabeçalho fixo em todas as telas */
}

a {
  text-decoration: none;
  color: var(--color-primary);
  transition: color 0.3s ease;
}

a:hover {
  color: var(--color-accent);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block; /* Remove espaço extra abaixo de imagens */
}

/* --- 2. Títulos e Subtítulos de Seções --- */
.section-title {
  font-family: var(--font-heading);
  font-size: 2.5em; /* Equivalente a 40px base 16px */
  text-align: center;
  color: var(--color-text-dark);
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-bottom: var(--spacing-sm);
}

.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--color-primary);
  margin: 0 auto;
  margin-top: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
}

.section-subtitle {
  font-size: 1.1em;
  text-align: center;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-lg);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* --- 3. Botões (Global) --- */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background-color: #e68100; /* Um pouco mais escuro */
  border-color: #e68100;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-text-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* --- 4. Header e Navegação --- */
.main-header {
  position: relative;
  height: 100vh; /* Ocupa 100% da altura da viewport */
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: var(--color-text-light);
  text-align: center;
  overflow: hidden; /* Garante que a imagem de fundo não vaze */
}

.hero-background-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2; /* Atrás do overlay e conteúdo */
}

.main-header::before {
  /* Overlay escuro sobre a imagem */
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-overlay);
  z-index: -1;
}

.header-content {
  position: fixed; /* Header fixo no topo */
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-xl);
  background-color: rgba(0, 0, 0, 0.7); /* Fundo semi-transparente */
  color: var(--color-text-light);
  z-index: 1000; /* Garante que fique acima de tudo */
  box-shadow: var(--shadow-md);
}

.site-logo {
  font-family: var(--font-heading);
  font-size: 2em;
  font-weight: 700;
  color: var(--color-text-light);
  flex-shrink: 0; /* Não permite que o logo encolha */
}

.main-navigation ul {
  display: flex;
}

.main-navigation li {
  margin: 0 var(--spacing-md);
}

.main-navigation a {
  color: var(--color-text-light);
  font-weight: 600;
  font-size: 1.1em;
}

.main-navigation a:hover {
  color: var(--color-primary);
}

.social-links {
  display: flex; /* A CHAVE: transforma em contêiner flexível */
  align-items: center; /* Alinha verticalmente os ícones ao centro */
  gap: var(--spacing-sm); /* Adiciona espaço entre os ícones */
}

.social-links img {
  width: 30px;
  height: 30px;
  transition: transform 0.3s ease;
}

.social-links img:hover {
  transform: scale(1.1);
}

.hero-section {
  padding: var(--spacing-xl);
  text-align: center;
  z-index: 1; /* Acima do overlay */
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.5em; /* Tamanho grande para impacto */
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: 1.5em;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-light);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* --- 5. Seções de Conteúdo Geral --- */
section {
  padding: var(--spacing-xl) var(--spacing-md);
  background-color: var(--color-bg-light); /* Cor de fundo padrão para seções */
}

.section-highlights {
  background-color: var(--color-bg-light);
}

/* --- 6. Cards de Viagem (Grid de Cards) --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(
    auto-fit,
    minmax(300px, 1fr)
  ); /* Colunas responsivas */
  gap: var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.travel-card {
  background-color: white;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden; /* Garante que a imagem de canto arredondado não vaze */
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.travel-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.card-image {
  width: 100%;
  height: 220px; /* Altura fixa para as imagens dos cards */
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  flex-grow: 1; /* Faz o conteúdo ocupar o espaço restante */
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.5em;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-dark);
}

.card-description {
  font-size: 0.95em;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
  flex-grow: 1; /* Garante que as descrições ocupem o mesmo espaço */
}

/* --- 7. Seção "Por Que Escolher a Trip HUB?" --- */
.section-why-us {
  background-color: #e9ecef; /* Um cinza claro para diferenciar */
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  max-width: 900px;
  margin: 0 auto;
}

.feature-item {
  text-align: center;
  padding: var(--spacing-md);
  background-color: white;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md) auto;
}

.feature-item h3 {
  font-family: var(--font-heading);
  font-size: 1.3em;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.feature-item p {
  font-size: 0.95em;
  color: var(--color-text-dark);
}

/* --- 8. Seção de Depoimentos --- */
.section-testimonials {
  background-color: var(--color-bg-light);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  max-width: 1000px;
  margin: 0 auto;
}

.testimonial-card {
  background-color: white;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between; /* Empurra o autor para baixo */
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.testimonial-text {
  font-size: 1em;
  font-style: italic;
  color: var(--color-text-dark);
  margin-bottom: var(--spacing-sm);
}

.testimonial-author {
  font-weight: 600;
  color: var(--color-primary);
  text-align: right;
}

/* --- 9. Formulário de Contato --- */
.contact-section {
  background-color: var(--color-bg-dark); /* Fundo escuro para o formulário */
  color: var(--color-text-light);
}

.contact-section .section-title,
.contact-section .section-subtitle {
  color: var(--color-text-light);
}

.contact-section .section-title::after {
  background-color: var(--color-accent);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  background-color: #343a40; /* Um cinza mais escuro para o formulário */
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-size: 1.1em;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-light);
}

.form-group label span {
  color: var(--color-accent); /* Asterisco obrigatório */
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid #555;
  border-radius: var(--border-radius-sm);
  background-color: #495057;
  color: var(--color-text-light);
  font-size: 1em;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #bbb;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-buttons {
  display: flex;
  justify-content: flex-end; /* Alinha os botões à direita */
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

/* --- 10. Footer --- */
.main-footer {
  background-color: #111111; /* Cor mais escura para o rodapé */
  color: var(--color-text-light);
  padding: var(--spacing-lg) var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.footer-col h3,
.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 1.2em;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

.footer-col ul {
  padding: 0;
}

.footer-col li {
  margin-bottom: var(--spacing-sm);
}

.footer-col a {
  color: var(--color-text-light);
  font-size: 0.95em;
}

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

.footer-col.logo-col p {
  font-size: 0.9em;
  color: rgba(255, 255, 255, 0.7);
}

.footer-social-links {
  display: flex; /* Transforma em contêiner flexível */
  align-items: center; /* Alinha verticalmente os ícones ao centro */
  gap: var(--spacing-sm); /* Adiciona espaço entre os ícones */
}

.footer-social-links img {
  width: 30px;
  height: 30px;
  transition: transform 0.3s ease;
}

.footer-social-links img:hover {
  transform: scale(1.1);
}

/* --- 11. Botão Voltar ao Topo --- */
.back-to-top-btn {
  position: fixed;
  bottom: var(--spacing-md);
  right: var(--spacing-md);
  background-color: var(--color-primary);
  color: var(--color-text-light);
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  font-size: 1.5em;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0; /* Começa invisível */
  visibility: hidden; /* Esconde do DOM */
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 999;
}

.back-to-top-btn.show {
  opacity: 1;
  visibility: visible;
}

/* --- 12. Responsividade --- */

/* Telas menores que 1024px (laptops/tablets grandes) */
@media (max-width: 1024px) {
  .header-content {
    padding: var(--spacing-md);
  }
  .main-navigation li {
    margin: 0 var(--spacing-sm);
  }
  .hero-title {
    font-size: 3em;
  }
  .hero-subtitle {
    font-size: 1.3em;
  }
  .section-title {
    font-size: 2.2em;
  }
}

/* Telas menores que 768px (tablets e celulares grandes) */
@media (max-width: 768px) {
  body {
    padding-top: 180px; /* Ajustado para acomodar o cabeçalho quebrando em várias linhas no mobile */
  }

  .main-header {
    height: auto; /* Deixa a altura ser definida pelo conteúdo */
    min-height: 500px; /* Garante uma altura mínima para a imagem não parecer esmagada */
  }

  /* Reduz o padding interno do hero-section para evitar esmagamento em telas pequenas */
  .hero-section {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  /* Ajustes para o header-content (navegação) ficar em coluna e alinhado */
  .header-content {
    flex-direction: column;
    padding: var(--spacing-md) var(--spacing-sm);
    text-align: center;
  }
  .site-logo {
    margin-bottom: var(--spacing-sm);
  }
  .main-navigation ul {
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
  }
  .main-navigation li {
    margin: 0 var(--spacing-sm) var(--spacing-sm) var(--spacing-sm);
  }
  .social-links {
    margin-top: var(--spacing-sm);
  }

  section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }
  .section-title {
    font-size: 2em;
  }
  .section-subtitle {
    font-size: 1em;
  }

  .form-buttons {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr; /* Uma coluna em telas pequenas */
    text-align: center;
  }
  .footer-col h4,
  .footer-col h3 {
    margin-top: var(--spacing-md);
  }
  .footer-col ul {
    margin-bottom: var(--spacing-md);
  }
  .footer-social-links {
    display: flex;
    justify-content: center;
  }
}

/* Telas menores que 480px (celulares) */
@media (max-width: 480px) {
  .hero-title {
    font-size: 2em;
  }
  .hero-subtitle {
    font-size: 0.9em;
  }
  .section-title {
    font-size: 1.8em;
  }
  .section-subtitle {
    font-size: 0.9em;
  }
}