/* Garante que o body e html ocupem a altura total e o layout funcione com footer fixo */
html, body {
  height: 100%;
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
  color: #ffffff;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Login container centralizado */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex: 1;
  box-shadow: 0 0 20px rgba(0, 255, 209, 0.2);
}

.planos-box {
  background: #1c1f26;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0, 255, 209, 0.2);
  width: 90%;
  max-width: 1200px;
  margin: 100px auto;
  text-align: center;
}
.planos-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 20px;
}

.plano {
  background-color: #2c2f36;
  padding: 20px;
  border-radius: 10px;
  border: 1px solid #444;
  text-align: center;
  min-width: 250px;
  max-width: 300px;
  flex: 1 1 250px;
  box-shadow: 0 0 20px rgba(0, 255, 209, 0.2);
}

.login-box {
  background: #1c1f26;
  padding: 40px;
  border-radius: 12px;
  text-align: center;
  width: 300px;
  box-shadow: 0 0 20px rgba(0, 255, 209, 0.2);
}

.login-box h2 {
  margin-bottom: 20px;
  color: #4fd1c5;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: none;
  border-radius: 8px;
  background: #2a2e39;
  color: #fff;
}

input::placeholder {
  color: #aaa;
}

button {
  width: 100%;
  padding: 12px;
  background-color: #4fd1c5;
  border: none;
  border-radius: 8px;
  color: #000;
  font-weight: bold;
  cursor: pointer;
}

button:hover {
  background-color: #38b2ac;
}

.mensagem {
  color: #f87171;
  margin-top: 10px;
}

/*.navbar {
  background-color: #2c3e50;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: white;
  flex-wrap: wrap;
}

.navbar-left .logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: white;
  text-decoration: none;
}

.navbar-menu {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}

.navbar-menu li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

Responsividade para telas pequenas
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .navbar-menu {
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
  }*/

  /* Estilo geral dos campos de input e textarea */
.input-field {
    width: 100%;
    padding: 12px 15px;
    font-size: 16px;
    border: 1.5px solid #ccc;
    border-radius: 6px;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    resize: vertical; /* só textarea pode ser redimensionado verticalmente */
}

/* Foco nos campos */
.input-field:focus {
    border-color: #00ffd1;
    outline: none;
    box-shadow: 0 0 8px rgba(0, 255, 209, 0.6);
}

/* Estilo do botão enviar */
.btn-submit {
    background-color: #00ffd1;
    color: #000;
    font-weight: bold;
    padding: 12px 25px;
    font-size: 18px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-submit:hover {
    background-color: #00c4a7;
}