/* Reset básico */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background: #f4f6f9;
  color: #333;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

/* Contenedor principal */
h1 {
  position: absolute;
  top: 30px;
  font-size: 2rem;
  color: #222;
}

/* Caja de login */
#login-box, #app {
  background: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  width: 320px;
  text-align: center;
}

h2 {
  margin-bottom: 20px;
  color: #444;
}

/* Formularios */
form {
  display: flex;
  flex-direction: column;
}

label {
  text-align: left;
  margin-bottom: 5px;
  font-size: 0.9rem;
  color: #555;
}

input {
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 6px;
  outline: none;
  transition: border 0.2s;
}

input:focus {
  border-color: #007bff;
}

/* Botones */
button {
  padding: 12px;
  border: none;
  border-radius: 6px;
  background: #007bff;
  color: white;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  ba