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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: sans-serif;
  /* Bandera de Galicia: fondo blanco, franja azul diagonal */
  background-color: #ffffff;
  background-image: linear-gradient(
    to bottom left,
    #ffffff 38%,
    #3099CB 38%,
    #3099CB 62%,
    #ffffff 62%
  );
  background-attachment: fixed;
  position: relative;
  overflow-x: hidden;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 3rem 1rem;
  position: relative;
  z-index: 1;
}

.logo {
  width: 220px;
  height: auto;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.25));
}

.links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.links a {
  display: inline-block;
  padding: 0.65rem 2rem;
  background-color: #1565c0;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  transition: background-color 0.2s ease, transform 0.15s ease;
  min-width: 180px;
  text-align: center;
}

.links a:hover {
  background-color: #0d47a1;
  transform: translateY(-2px);
}

footer {
  text-align: center;
  padding: 1.2rem 1rem;
  background-color: #1a1a2e;
  color: #ccc;
  font-size: 0.9rem;
  position: relative;
  z-index: 1;
}