/* 
 * IA Municipal - Estilo Tecnológico
 * Tema moderno com tons de azul escuro para um visual mais tecnológico
 */

/* Variáveis de cores e fontes */
:root {
  --blue-900: #0d1b2a;
  --blue-800: #1b263b;
  --blue-700: #2a3b57;
  --blue-600: #415a77;
  --blue-500: #546a8c;
  --blue-400: #778da9;
  --blue-300: #a3b8cc;
  --blue-200: #cad6e6;
  --blue-100: #e0e9f4;
  --accent: #00bcd4;
  --accent-alt: #3d5afe;
  --white: #f5f8ff;
  --dark: #121212;
  --success: #4caf50;
  --warning: #ff9800;
  --error: #f44336;
  --font-main: 'Poppins', Helvetica, Arial, sans-serif;
}

/* Reset e estilos base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  color: var(--white);
  background: var(--blue-900);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(65, 90, 119, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(0, 188, 212, 0.05) 0%, transparent 50%);
}

/* Cabeçalho e navegação */
header {
  background: linear-gradient(90deg, var(--blue-900), var(--blue-800));
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(119, 141, 169, 0.1);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.logo {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
  text-shadow: 0 0 10px rgba(0, 188, 212, 0.3);
}

.subtitle {
  font-size: 1.2rem;
  color: var(--blue-300);
  margin-bottom: 1rem;
}

nav {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-top: 1rem;
}

nav a {
  color: var(--blue-200);
  text-decoration: none;
  padding: 0.5rem 1.5rem;
  margin: 0 0.5rem;
  font-weight: 500;
  transition: all 0.3s ease;
  border-radius: 4px;
  position: relative;
}

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

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

nav a:hover::after {
  width: 80%;
}

/* Container principal */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* Seção de hero */
.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 1rem;
  background: radial-gradient(ellipse at top, var(--blue-700), var(--blue-900) 80%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(45deg, var(--blue-900) 25%, transparent 25%),
    linear-gradient(-45deg, var(--blue-900) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--blue-900) 75%),
    linear-gradient(-45deg, transparent 75%, var(--blue-900) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  opacity: 0.05;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: 1rem;
  background: linear-gradient(90deg, var(--white), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-fill-color: transparent;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  max-width: 45rem;
  margin-bottom: 2rem;
  color: var(--blue-300);
}

/* Botões */
.btn {
  display: inline-block;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
  color: var(--white);
  padding: 0.75rem 2rem;
  border-radius: 4px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 188, 212, 0.3);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: all 0.5s ease;
  z-index: -1;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(0, 188, 212, 0.4);
}

.btn:hover::before {
  left: 100%;
}

/* Cards */
.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background: linear-gradient(135deg, var(--blue-800), var(--blue-700));
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(119, 141, 169, 0.1);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.card h2 {
  color: var(--accent);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.card p {
  color: var(--blue-200);
  margin-bottom: 1.5rem;
}

/* Seções */
section {
  padding: 4rem 0;
}

section h2 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
  position: relative;
  display: inline-block;
}

section h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--accent);
}

/* Rodapé */
footer {
  background: var(--blue-800);
  text-align: center;
  padding: 3rem 2rem;
  margin-top: 4rem;
  border-top: 1px solid rgba(119, 141, 169, 0.1);
}

footer p {
  color: var(--blue-300);
  font-size: 0.9rem;
}

/* Elementos de tecnologia decorativos */
.tech-circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(0, 188, 212, 0.05);
  border: 1px solid rgba(0, 188, 212, 0.1);
  z-index: -1;
}

.tech-circle-1 {
  width: 300px;
  height: 300px;
  top: -150px;
  right: -150px;
}

.tech-circle-2 {
  width: 200px;
  height: 200px;
  bottom: -100px;
  left: -100px;
}

/* Estilos para o formulário de contato */
#contato form {
  width: 100%;
}

#contato input,
#contato select,
#contato textarea {
  transition: all 0.3s ease;
}

#contato input:focus,
#contato select:focus,
#contato textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(0, 188, 212, 0.2);
}

/* Classe ativa para navegação */
nav a.active {
  color: var(--accent);
  background: rgba(0, 188, 212, 0.1);
  border-radius: 4px;
}

nav a.active::after {
  width: 80%;
}

/* Responsividade */
@media (max-width: 768px) {
  .header-container {
    padding: 0 1rem;
  }
  
  nav {
    flex-wrap: wrap;
  }
  
  nav a {
    margin: 0.25rem;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
  
  .container {
    padding: 2rem 1rem;
  }
  
  .hero {
    padding: 4rem 1rem;
  }
  
  .card-container {
    grid-template-columns: 1fr;
  }
  
  #contato form {
    padding: 1rem;
  }
  
  #contato input,
  #contato select,
  #contato textarea {
    padding: 0.6rem;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .logo {
    font-size: 2rem;
  }
  
  .subtitle {
    font-size: 1rem;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .btn {
    padding: 0.6rem 1.5rem;
  }
  
  nav {
    flex-direction: column;
    align-items: center;
  }
  
  nav a {
    width: 100%;
    text-align: center;
    margin: 0.2rem 0;
  }
}