/* --- Variáveis de tema --- */
:root{
  --primary: #106d78;
  --primary-dark: #0e5b64;
  --muted: #6b7176;
  --bg: #f3f6f7;
  --card-bg: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(13, 40, 45, 0.08);
  --max-width: 1100px;
  --gap: 24px;
  --container-padding: 32px;
  --accent: #0ba4b0;
  --footer-height: 160px;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* --- Reset / base --- */
*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: #122028;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height: 1.55;
  font-size: 16px;
}

/* --- Cabeçalho --- */
header{
  background: var(--primary);
  color: #fff;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 18px calc(6vw);
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 40;
}

/* Logo */
header .logo{
  display:flex;
  align-items:center;
  gap: 12px;
  font-weight: 700;
  font-size: 18px;
}
header .logo span{ letter-spacing: 0.2px; }

/* Navegação */
header nav{
  display:flex;
  gap: 22px;
  align-items:center;
}
header nav a{
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  padding: 6px 4px;
  position: relative;
  transition: color .18s ease;
}
header nav a:hover{ color: #e7f7f8; }

/* underline animado */
header nav a::after{
  content: "";
  height: 2px;
  width: 0;
  background: rgba(255,255,255,0.9);
  position: absolute;
  left: 0;
  bottom: -6px;
  transition: width .22s ease;
  border-radius: 2px;
}
header nav a:hover::after{ width: 100%; }

/* --- Conteúdo principal --- */
main{
  padding: 42px calc((100% - var(--max-width)) / 2 + 24px);
  min-height: calc(100vh - var(--footer-height));
}

/* Card introdutório centralizado */
.intro-card{
  background: var(--card-bg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--container-padding);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr 420px; /* texto+imagem à esquerda, destaques à direita */
  gap: 28px;
  align-items: start;
}

/* Texto de boas-vindas */
.intro-text{
  display:flex;
  flex-direction:column;
  gap: 16px;
}
.intro-text h1{
  margin: 0;
  font-size: 28px;
  line-height: 1.12;
  color: #0c2730;
  letter-spacing: -0.2px;
}
.intro-text p{
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* Área da imagem (fica abaixo do texto na coluna esquerda) */
.intro-image{
  margin-top: 10px;
}
.intro-image img{
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: 10px;
  display:block;
  box-shadow: 0 6px 20px rgba(8,24,30,0.06);
  border: 1px solid rgba(8,24,30,0.03);
}

/* Destaques (coluna direita) */
.highlights{
  background: linear-gradient(180deg, rgba(16,109,120,0.03), rgba(11,164,176,0.02));
  padding: 28px;
  border-radius: 10px;
  align-self: center;
  box-shadow: 0 6px 20px rgba(9,28,32,0.03);
}
.highlights h2{
  margin: 0 0 12px 0;
  font-size: 20px;
  color: #082f33;
}
.highlights ul{
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: 15px;
  list-style: disc;
}
.highlights li{
  margin-bottom: 10px;
}

/* --- Rodapé --- */
footer{
  background: var(--primary);
  color: #fff;
  padding: 32px 6vw;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap: 18px;
}

/* Links do rodapé */
.footer-links{
  display:flex;
  gap: 18px;
  align-items:center;
}
.footer-links a{
  color: rgba(255,255,255,0.95);
  text-decoration:none;
  font-weight:500;
  transition: opacity .16s;
}
.footer-links a:hover{ opacity: 0.85; }

/* Ícones sociais - círculos */
.social-icons{
  display:flex;
  gap: 10px;
}
.social-icons a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  background: rgba(255,255,255,0.08);
  border-radius: 8px;
  text-decoration:none;
  color: #fff;
  font-size: 16px;
  transition: transform .14s ease, background .14s ease;
}
.social-icons a:hover{
  transform: translateY(-3px);
  background: rgba(255,255,255,0.12);
}

/* Copyright */
footer p{
  margin: 0;
  color: rgba(255,255,255,0.9);
  font-size: 14px;
  opacity: 0.95;
}

/* --- Responsividade --- */
@media (max-width: 1024px){
  .intro-card{ grid-template-columns: 1fr 340px; padding: 28px; gap: 20px; }
  .intro-image img{ height: 200px; }
}

@media (max-width: 800px){
  header{ padding: 14px 18px; }
  header nav{ gap: 12px; font-size: 15px; flex-wrap:wrap; }
  main{ padding: 28px 18px; }
  .intro-card{
    grid-template-columns: 1fr;
    padding: 20px;
    gap: 18px;
  }
  .highlights{ order: 3; }       /* highlights ficam abaixo */
  .intro-image{ order: 2; }      /* imagem depois do texto */
  .intro-text{ order: 1; }
  .intro-image img{ height: 260px; }
}

@media (max-width: 420px){
  .intro-image img{ height: 180px; border-radius: 8px; }
  .intro-text h1{ font-size: 20px; }
  .highlights{ padding: 18px; }
  header .logo{ font-size: 15px; }
  header nav a{ font-size: 14px; }
  footer{ padding: 26px 18px; }
}

/* --- Pequenas melhorias visuais adicionais --- */
/* melhora leitura de listas em telas pequenas */
.highlights li::marker { color: var(--accent); font-weight: 600; }

/* foco acessível para links */
a:focus{ outline: 3px solid rgba(11,164,176,0.18); outline-offset: 4px; border-radius: 6px; }