:root {
  --verde-escuro: #1b4d1f;
  --verde-medio: #2e7d32;
  --verde-claro: #e8f3e8;
  --texto: #222;
  --cinza-borda: #ddd;
  --largura-maxima: 1140px;
}

* { box-sizing: border-box; }

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

a { color: var(--verde-medio); }
a:hover { color: var(--verde-escuro); }

.container {
  max-width: var(--largura-maxima);
  margin: 0 auto;
  padding: 0 20px;
}

/* Cabeçalho */
.site-header {
  background: var(--verde-escuro);
  color: #fff;
  padding: 22px 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.site-header .logo {
  height: 70px;
  width: auto;
  flex-shrink: 0;
}

.site-header .titulos p {
  margin: 0;
  font-size: 0.85rem;
  opacity: 0.9;
}

.site-header .titulos h1 {
  margin: 2px 0;
  font-size: 2rem;
  line-height: 1.1;
}

.site-header .titulos .instituicao {
  font-size: 0.95rem;
  font-weight: bold;
}

/* Navegação */
.site-nav {
  background: var(--verde-medio);
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
}

.site-nav a {
  display: block;
  color: #fff;
  text-decoration: none;
  padding: 12px 18px;
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a:focus {
  background: var(--verde-escuro);
}

.site-nav .externo::after {
  content: " ↗";
  font-size: 0.8em;
  opacity: 0.8;
}

/* Conteúdo principal */
.main-content {
  padding: 40px 0 60px;
}

.layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: start;
}

.artigo h1 {
  color: var(--verde-escuro);
  border-bottom: 3px solid var(--verde-medio);
  padding-bottom: 10px;
  margin-top: 0;
}

.artigo h2 {
  color: var(--verde-medio);
  margin-top: 2em;
}

.artigo p { margin: 1em 0; }

.bloco-coordenacao {
  margin-top: 40px;
  padding: 20px;
  background: var(--verde-claro);
  border-left: 4px solid var(--verde-medio);
}

.bloco-coordenacao h2 {
  margin-top: 0;
}

/* Barra lateral / notícias */
.sidebar .caixa {
  background: #f7f7f7;
  border: 1px solid var(--cinza-borda);
  border-radius: 4px;
  margin-bottom: 24px;
}

.sidebar .caixa h2 {
  background: var(--verde-medio);
  color: #fff;
  font-size: 1.1rem;
  margin: 0;
  padding: 12px 16px;
  border-radius: 4px 4px 0 0;
}

.sidebar .caixa .conteudo {
  padding: 14px 16px;
}

.noticia {
  border-bottom: 1px solid var(--cinza-borda);
  padding: 10px 0;
}

.noticia:last-child { border-bottom: none; }

.noticia a {
  font-weight: bold;
  text-decoration: none;
}

.noticia a:hover { text-decoration: underline; }

.noticia .data {
  display: block;
  font-size: 0.8rem;
  color: #666;
  margin-top: 2px;
}

.sidebar .ver-todas {
  display: block;
  text-align: right;
  padding: 10px 16px;
  font-size: 0.9rem;
  border-top: 1px solid var(--cinza-borda);
}

.sidebar .links-ufpa ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar .links-ufpa li { margin-bottom: 8px; }

/* Rodapé */
.site-footer {
  background: var(--verde-escuro);
  color: #eee;
  padding: 30px 0;
  font-size: 0.9rem;
}

.site-footer a { color: #fff; }

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .site-header .container { flex-direction: column; text-align: center; }
  .site-nav ul { flex-direction: column; }
  .site-footer .container { flex-direction: column; text-align: center; }
}

/* Painel administrativo */
.admin-body {
  background: #f2f2f2;
  font-family: Arial, Helvetica, sans-serif;
}

.admin-wrap {
  max-width: 720px;
  margin: 40px auto;
  background: #fff;
  border: 1px solid var(--cinza-borda);
  border-radius: 6px;
  padding: 30px;
}

.admin-wrap h1 {
  color: var(--verde-escuro);
  margin-top: 0;
}

.admin-form label {
  display: block;
  font-weight: bold;
  margin: 16px 0 6px;
}

.admin-form input[type=text],
.admin-form input[type=password],
.admin-form textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--cinza-borda);
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
}

.admin-form textarea { min-height: 320px; resize: vertical; }

.btn {
  display: inline-block;
  background: var(--verde-medio);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  text-decoration: none;
  margin-top: 16px;
}

.btn:hover { background: var(--verde-escuro); color: #fff; }

.admin-list { list-style: none; padding: 0; }
.admin-list li {
  padding: 14px;
  border: 1px solid var(--cinza-borda);
  border-radius: 4px;
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.alerta {
  padding: 12px 16px;
  border-radius: 4px;
  margin-bottom: 20px;
}

.alerta.sucesso { background: #e6f4ea; border: 1px solid #a8d5b0; color: #1b4d1f; }
.alerta.erro { background: #fdecea; border: 1px solid #f5b3ac; color: #611a15; }

.topo-admin {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.topo-admin a { font-size: 0.9rem; }