/* Reset */
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden; /* sem scroll */
}

/* Layout geral */
body {
  font-family: Arial, sans-serif;
  background-color: #000;
  color: #f5f5f5;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  text-align: center;
}

/* Nav fixo */
nav.links {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(0,0,0,0.7);
  padding: 10px 0;
  z-index: 10;
}

nav.links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
}

nav.links li {
  margin: 0 15px;
}

nav.links a {
  color: #fff;
  text-decoration: none;
}

nav.links a:hover {
  color: #1e88e5;
}

/* Header centralizado */
header {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* Logo grande mas proporcional */
.logo {
  width: 60vw;       /* ocupa 60% da largura da tela */
  max-height: 60vh;  /* limita altura */
  object-fit: contain;
  margin-bottom: 20px;
}

/* Texto abaixo da logo */
h3, p {
  margin: 5px 0;
}

/* Footer fixo */
footer {
  background: rgba(0,0,0,0.7);
  padding: 10px;
  font-size: 0.9rem;
  color: #aaa;
  width: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
  text-align: center;
}