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

/* BASE */
body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f4f6f9;
  color: #333;
}

/* CONTENEDOR */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

/* ============================= */
/* LOGIN */
/* ============================= */

form {
  background: #fff;
  max-width: 400px;
  margin: 80px auto;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

form input {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
}

form button {
  width: 100%;
  padding: 10px;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

form button:hover {
  background: #0056b3;
}

/* ERROR */
.alert {
  color: red;
  margin-top: 10px;
}

/* ============================= */
/* PANEL */
/* ============================= */

header {
  background: #222;
  color: white;
  padding: 15px;
}

header h1 {
  font-size: 18px;
}

/* NAV */
nav {
  margin-top: 10px;
}

nav a {
  margin-right: 10px;
  color: #007bff;
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

/* CAJAS */
.card {
  background: white;
  padding: 20px;
  border-radius: 6px;
  margin-top: 20px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

/* BOTONES */
.btn {
  display: inline-block;
  padding: 8px 12px;
  background: #28a745;
  color: white;
  text-decoration: none;
  border-radius: 4px;
}

.btn:hover {
  background: #1e7e34;
}

/* FOOTER */
footer {
  margin-top: 40px;
  font-size: 12px;
  color: #999;
  text-align: center;
}