/* Estilos gerais */
:root{
  --azul-escuro:#003366;
  --azul:#0055aa;
  --cinza-borda:#e5e8ee;
  --bg:#f5f7fa;
  --texto:#333;
}

*{ box-sizing:border-box; }

body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
  color: var(--texto);
  background: var(--bg);
  line-height: 1.6;
}

/* BANNER */
header.banner {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: #000;
}
header.banner img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  display: block;
  opacity: .9;
}
.banner-text {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
  color: #fff;
  background: rgba(0,0,0,.5);
  padding: 14px 18px;
  border-radius: 10px;
  text-align: center;
}
.banner-text h1{
  margin: 0 0 6px;
  font-size: 1.35rem;
}
.banner-text p{
  margin: 0;
  font-weight: 600;
}

/* MENU */
nav {
  background-color: var(--azul-escuro);
  position: sticky;
  top: 0;
  z-index: 20;
}
nav ul {
  list-style-type: none;
  display: flex;
  justify-content: center;
  gap: 6px;
  margin: 0;
  padding: 8px;
  flex-wrap: wrap;
}
nav ul li a {
  color: #fff;
  text-decoration: none;
  padding: 8px 12px;
  display: block;
  border-radius: 6px;
  font-weight: 700;
}
nav ul li a:hover {
  background: rgba(255,255,255,.15);
}

/* Seções padrão */
section {
  background: #fff;
  margin: 16px;
  padding: 18px;
  border: 1px solid var(--cinza-borda);
  border-radius: 10px;
}
section h2 {
  color: var(--azul-escuro);
  margin-top: 0;
}
section h3 { 
  margin-bottom: 8px; 
}

/* QUEM SOMOS */
#quem-somos {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
  line-height: 1.7;
  font-size: 1.1rem;
  color: var(--texto);
}
#quem-somos h2 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 20px;
  color: var(--azul);
}
#quem-somos h3 {
  font-size: 1.8rem;
  margin-top: 30px;
  margin-bottom: 15px;
  color: #0066cc;
}
#quem-somos p {
  margin-bottom: 15px;
}
/* Imgur embed */
#quem-somos blockquote.imgur-embed-pub {
  margin: 30px 0;
  text-align: center;
}

/* Notícias */
#noticias article{
  background:#fff;
  border:1px solid var(--cinza-borda);
  border-radius:10px;
  padding:12px;
  margin:10px 0;
}

/* Comunicados */
.comunicado{
  border-left:4px solid var(--azul-escuro);
  padding-left:12px;
}
.assinatura{
  font-style: italic;
  color:#444;
}

/* Formulário */
form {
  display: grid;
  gap: 10px;
  max-width: 680px;
}
form input, form textarea {
  padding: 10px;
  border: 1px solid var(--cinza-borda);
  border-radius: 8px;
  font: inherit;
  background: #fff;
}
form button {
  background-color: var(--azul-escuro);
  color: #fff;
  padding: 10px 14px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
}
form button:hover { filter: brightness(1.1); }

/* Rodapé */
footer {
  background-color: var(--azul-escuro);
  color: #fff;
  padding: 16px;
  text-align: center;
}
footer a{ color:#fff; font-weight:700; }

/* Responsivo */
@media (max-width: 720px){
  header.banner img{ height: 240px; }
  .banner-text h1{ font-size:1.05rem; }
  .banner-text p{ font-size:.95rem; }
  section{ margin: 12px; padding: 14px; }
}