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

/* FONTE GLOBAL */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #222;
  background-color: #fff;
  line-height: 1.6;
}

/* HEADER */
header {
  position: relative;
  text-align: center;
  padding: 3rem 1rem 2rem;
  background-image: url('https://png.pngtree.com/thumb_back/fh260/background/20240528/pngtree-background-of-monitor-computer-with-online-game-streaming-desktop-image_15734081.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: white;
  margin-bottom: 1.5rem;
}

header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

header * {
  position: relative;
  z-index: 2;
}

header img {
  display: block;
  margin: 0 auto 1rem;
  border-radius: 50%;
  height: 200px;
  width: 200px;
  object-fit: cover;
  border: 4px solid white;
  background-color: white;
}

header h1,
header h3 {
  display: block;
  margin: 0.5rem auto;
  max-width: fit-content;
}

header h1 span,
header h3 span {
  background-color: rgba(255, 255, 255, 0.85);
  color: #111;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  display: inline-block;
}

/* NAVEGAÇÃO */
nav {
  border: 2px solid black;
  background-color: white;
  padding: 10px 0;
  text-align: center;
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 2rem;
  user-select: none;
}

nav a {
  color: black;
  text-decoration: none;
  margin: 0 15px;
  padding: 5px 10px;
  border-radius: 6px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

nav a:hover {
  background-color: #0077cc;
  color: white;
}

nav a.active {
  background-color: black;
  color: white;
  cursor: default;
  pointer-events: none;
}

/* MAIN (CONTEÚDO PRINCIPAL) */
main {
  max-width: 960px;
  margin: 0 auto 3rem;
  padding: 0 1rem;
}

/* TÍTULOS */
h1, h2, h3 {
  font-weight: 700;
  margin-bottom: 1rem;
  color: #111;
}

h2 {
  margin-top: 2rem;
  border-bottom: 3px solid #0077cc;
  padding-bottom: 0.3rem;
}

h3 {
  margin-top: 1.5rem;
}

/* PARÁGRAFOS */
p {
  margin-bottom: 1rem;
  line-height: 1.5;
  color: #333;
}

/* LISTAS */
ul {
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
  color: #444;
}

li {
  margin-bottom: 0.4rem;
}

/* RODAPÉ */
footer {
  text-align: center;
  padding: 1rem 0;
  font-size: 0.9rem;
  color: #555;
  border-top: 1px solid #ccc;
  background-color: #f9f9f9;
}

/* LINKS NO RODAPÉ (se houver) */
footer a {
  color: #0077cc;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* RESPONSIVIDADE SIMPLES */
@media (max-width: 600px) {
  nav a {
    display: block;
    margin: 8px 0;
  }
  
  header img {
    height: 150px;
    width: 150px;
  }
}