.side-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 80%;
  max-width: 400px; /* Máximo em telas grandes */
  height: 100%;
  background-color: #2f2f2f;
  transform: translateX(-100%);
  transition: transform 0.4s ease;
  z-index: 999;
  box-shadow: 2px 0 6px rgba(0,0,0,0.5);
  display: flex;
  flex-direction: column;
  padding-top: 2rem;
  padding-bottom: 2rem;
}

.side-menu.open {
  transform: translateX(0);
}

.side-menu ul {
  list-style: none;
  margin: 0;
  padding: 0 1.5rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.side-menu ul li {
  margin: 1.2rem 0;
}

/* Links (Início, Aula Completa, etc.) */
.side-menu ul li a {
  color: #fff;
  text-decoration: none;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.side-menu ul li a:hover {
  color: #00ff7f;
}

/* Botão do modo de uso */
.modo-uso-btn {
  background-color: #3c3c3c;
  color: #fff;
  border: none;
  padding: 0.7rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  width: 100%;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modo-uso-options {
  display: none;
  flex-direction: column;
  margin-top: 0.5rem;
  gap: 0.3rem;
  padding-left: 1rem;
}

.modo-option {
  background-color: #4a4a4a;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.95rem;
  cursor: pointer;
}
.modo-option:hover {
  background-color: #00ff7f;
  color: #1e1e1e;
}
.modo-option.selected {
  background-color: #00ff7f;
  color: #1e1e1e;
}

/* Ao abrir as opções, exibe */
.modo-uso.open .modo-uso-options {
  display: flex;
}

/* Versão Automática */
.versao-automatica {
  background: #444;
  padding: 1rem;
  border-radius: 8px;
  color: #fff;
  font-weight: 700;
}

.versao-automatica-top {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.auto-text {
  font-size: 0.95rem;
  margin-bottom: 1rem;
  opacity: 0.9;
}

/* Botão verde com link /pro */
.auto-button {
  display: inline-block;
  background-color: #00ff7f;
  color: #1e1e1e;
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}
.auto-button:hover {
  background-color: #00cc66;
}