/* Reset básico e base acessível */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  }

html {
font-size: 100%;
}

body {
font-family: Arial, Helvetica, sans-serif;
line-height: 1.6;
background-color: #f4f6f8;
color: #1a1a1a;
}

/* Links acessíveis */
a {
color: #004aad;
text-decoration: none;
}

a:focus,
a:hover {
text-decoration: underline;
outline: 2px solid #004aad;
outline-offset: 2px;
}

/* Cabeçalho */
header {
background-color: #ffffff;
padding: 1.5rem 1rem;
text-align: center;
border-bottom: 4px solid #004aad;
}

.logo-header {
width: 140px;
height: auto;
margin-bottom: 0.8rem;
}

header h1 {
font-size: 2rem;
margin-bottom: 0.4rem;
}

header p {
font-size: 1rem;
}

/* Navegação principal */
nav {
background-color: #004aad;
padding: 0.8rem;
display: flex;
flex-wrap: wrap;
justify-content: center;
gap: 1rem;
}

nav a {
color: #ffffff;
font-weight: bold;
}

nav a:focus,
nav a:hover {
background-color: #ffffff;
color: #004aad;
padding: 0.4rem 0.6rem;
border-radius: 4px;
}

/* Conteúdo principal */
main {
max-width: 1100px;
margin: auto;
padding: 2rem 1rem;
}

/* Seções */
section {
margin-bottom: 2.5rem;
}

section h2 {
font-size: 1.6rem;
margin-bottom: 0.8rem;
border-left: 6px solid #004aad;
padding-left: 0.6rem;
}

section p {
font-size: 1rem;
margin-bottom: 1rem;
}

/* Links em lista (notícias) */
#noticias a {
display: block;
margin-bottom: 0.5rem;
}

/* Formulário acessível */
form {
max-width: 600px;
}

label {
font-weight: bold;
}

input,
textarea,
button {
width: 100%;
padding: 0.6rem;
font-size: 1rem;
margin-top: 0.3rem;
}

input,
textarea {
border: 2px solid #999;
border-radius: 4px;
}

input:focus,
textarea:focus {
border-color: #004aad;
outline: none;
}

/* Botões */
button {
background-color: #004aad;
color: #ffffff;
border: none;
cursor: pointer;
margin-top: 1rem;
font-weight: bold;
}

button:hover,
button:focus {
background-color: #003080;
outline: 2px solid #000000;
outline-offset: 2px;
}

/* Rodapé */
footer {
background-color: #1a1a1a;
color: #ffffff;
text-align: center;
padding: 1.5rem 1rem;
}

footer p {
margin-bottom: 0.8rem;
}

footer nav a {
color: #ffffff;
margin: 0 0.4rem;
}

footer nav a:focus,
footer nav a:hover {
text-decoration: underline;
}

/* Seção de data e hora */
section[aria-labelledby="titulo-data-hora"] {
background-color: #ffffff;
margin: 2rem auto;
padding: 1.5rem;
max-width: 600px;
border-radius: 6px;
border: 2px solid #004aad;
text-align: center;
}

#dataHora {
margin: 1rem 0;
font-size: 1.2rem;
}

/* Responsividade */
@media (max-width: 768px) {
header h1 {
font-size: 1.6rem;
}

nav {
flex-direction: column;
align-items: center;
}

main {
padding: 1.5rem 1rem;
}
}