/* Fondo y fuente */
body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to right, #d4f5d4, #ffffff);
}

/* Logo arriba */
.logo-wrapper {
  margin: 0;
  padding: 0;
  text-align: center;
}
.logo {
  margin-top: 0;
  margin-bottom: 0;
  width: 280px;
  height: auto;
}

/* Contenedor centrado */
.main-wrapper {
  height: calc(50vh - 10px);
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Caja del formulario */
.container {
  background-color: #5cb85c;
  padding: 2rem;
  padding-bottom: 60px; /* espacio para el botón redondo */
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  width: 90%;
  max-width: 420px;
  text-align: center;
  color: #fff;
  position: relative; /* necesario para posicionar el botón dentro */
}

/* Título */
.container h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

/* Inputs */
.container input {
  width: 90%;
  padding: 0.8rem 1rem;
  margin-bottom: 1rem;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  color: #333;
  background: #ffffff;
}

.btn-submit {
  width: 60%;
  padding: 0.8rem;
  background: #ffffff;
  color: #5cb85c;
  border: none;
  border-radius: 10px;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
}
.btnn {
  border-radius: 20px;
  border: 1px solid #ffffff;
  background-color: #fcfcfc;
  color: #5cb85c;
  font-size: 14px;
  padding: 12px 45px;
  margin-top: 20px;
  transition: transform 80ms ease-in;
  cursor: pointer;
}

.btn-submit:hover {
  background-color: #e6e6e6;
}
/* Botón redondo de volver */
.round-nav-btn {
    align-items: center;
    text-align: center;
  position: absolute;
  bottom: 10px;
  left: 10px;
  width: 80px;
  height: 29px;
  border-radius: 20px;
  border: none;
  background-color: #ffffff;
  color: #5cb85c;
  font-size: 20px;
  display: flex;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  transition: all 0.2s ease;
  cursor: pointer;
}
.round-nav-btn:hover {
  background-color: #f3f3f3;
  transform: translateY(-2px);
}