/* ===== VARIÁVEIS GLOBAIS ===== */
:root {
  /* Cores principais */
  --primary-blue: #0d47a1;
  --dark-blue: #0a192f;
  --medium-blue: #1565c0;
  --light-blue: #e3f2fd;
  --accent-green: #2ecc71;
  --text-gray: #455a64;
  --text-light: #fff;
  --light-gray: #f5f7fa;
  
  /* Espaçamentos */
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Efeitos visuais */
  --border-radius: 6px;
  --box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  --box-shadow-hover: 0 8px 20px rgba(0,0,0,0.12);
  --transition: all 0.3s ease;
}

/* ===== RESET E BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

h1, h2, h3, h4, h5, h6 {
  color: var(--primary-blue);
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

p {
  margin-bottom: var(--spacing-sm);
}

/* ===== LAYOUT E CONTAINERS ===== */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

.container-narrow {
  width: 90%;
  max-width: 800px;
  margin: 0 auto;
}

/* ===== HEADER E NAVEGAÇÃO ===== */
.header {
  background: var(--dark-blue);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-green));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
  transition: var(--transition);
}

.logo:hover {
  transform: scale(1.05);
}

.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
}

.nav-menu li {
  margin-left: 2rem;
}

.nav-menu a {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: var(--transition);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  left: 0;
  bottom: -5px;
  background: var(--accent-green);
  transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-menu a.active {
  color: var(--accent-green);
}

.lang-select {
  margin-left: 2rem;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  border: 1px solid #ccc;
  background: var(--light-blue);
  color: var(--dark-blue);
  font-size: 0.9rem;
}

/* ===== SEÇÕES HERO ===== */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-light);
  padding: var(--spacing-xl);
  position: relative;
}

.hero-home {
  height: 80vh;
  background: linear-gradient(rgba(10,25,47,.85), rgba(10,25,47,.9)), 
              url('https://images.unsplash.com/photo-1581092918056-0c4c3acd3789') center/cover;
}

.hero-page {
  height: 60vh;
  background: linear-gradient(rgba(10,25,47,.85), rgba(10,25,47,.9)), 
              url('https://images.unsplash.com/photo-1521791136064-7986c2920216') center/cover;
}

.hero-technology {
  background: linear-gradient(rgba(10,25,47,.85), rgba(10,25,47,.9)), 
              url('https://images.unsplash.com/photo-1581092580496-e0d23cbdf1a4') center/cover;
}

.hero-management {
  background: linear-gradient(rgba(10,25,47,.85), rgba(10,25,47,.9)), 
              url('https://images.unsplash.com/photo-1503387762-592deb58ef4e') center/cover;
}

.hero-contact {
  height: 50vh;
  background: linear-gradient(rgba(10,25,47,.85), rgba(10,25,47,.9)), 
              url('https://images.unsplash.com/photo-1581092508409-9d6717d3cd45') center/cover;
}

.hero-consulting {
  background: linear-gradient(rgba(10,25,47,.85), rgba(10,25,47,.9)), 
              url('https://images.unsplash.com/photo-1560448204-e02f11c3d0e2') center/cover;
}

.hero h1 {
  color: var(--text-light);
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
  font-size: 1.2rem;
  max-width: 600px;
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
}

/* ===== BOTÕES ===== */
.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  text-align: center;
}

.btn-gradient {
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-green));
  color: var(--text-light);
}

.btn-gradient:hover {
  background: linear-gradient(90deg, #0b3d91, #27ae60);
  box-shadow: var(--box-shadow-hover);
  transform: translateY(-2px);
}

/* ===== SEÇÕES DE CONTEÚDO ===== */
.section {
  padding: var(--spacing-lg) 0;
}

.section-light {
  background: var(--light-gray);
}

/* ===== CARDS E COMPONENTES ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.service-card {
  background: #fff;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  border-top: 4px solid var(--primary-blue);
  transition: var(--transition);
  text-align: center;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow-hover);
}

.service-card i {
  font-size: 2.5rem;
  color: var(--primary-blue);
  margin-bottom: var(--spacing-sm);
}

.tech-feature, .service-item {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--light-gray);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary-blue);
}

.content-block {
  margin-bottom: var(--spacing-lg);
}

/* ===== FORMULÁRIOS ===== */
.contact-form {
  background: #fff;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  margin: var(--spacing-md) auto;
  max-width: 700px;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-gray);
}

.form-control {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(13,71,161,0.1);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--dark-blue);
  color: #ccc;
  text-align: center;
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-lg);
}

/* ===== UTILITÁRIOS ===== */
.text-center { text-align: center; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-md); }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-600 { max-width: 600px; }
.max-w-800 { max-width: 800px; }
.max-w-900 { max-width: 900px; }

/* ===== RESPONSIVIDADE ===== */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .nav-menu {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .nav-menu li {
    margin: 0.5rem;
  }
  
  .lang-select {
    margin-left: 0;
    margin-top: var(--spacing-sm);
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-home {
    height: 70vh;
  }
  
  .hero-page, .hero-technology, .hero-management, .hero-consulting {
    height: 50vh;
  }
  
  .container, .container-narrow {
    width: 95%;
  }
}