body {
  font-family: 'Segoe UI', sans-serif;
  background: #f5f7fa;
  margin: 0;
  padding: 30px;
  color: #222;
}

h2 { color: #0073aa; text-align: center; }

nav {
  text-align: center;
  margin-bottom: 20px;
}

nav a {
  margin: 5px 10px;
  text-decoration: none;
  background: #0073aa;
  color: white;
  padding: 8px 15px;
  border-radius: 5px;
}

nav a.logout { background: #d63638; }

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

th, td {
  border: 1px solid #ddd;
  padding: 8px;
  text-align: left;
}

th { background: #0073aa; color: white; }

.form-card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  max-width: 600px;
  margin: 0 auto;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

label { display: block; margin-top: 10px; }

input, select, button {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
  box-sizing: border-box;
}

button {
  background: #0073aa;
  color: white;
  border: none;
  cursor: pointer;
  margin-top: 15px;
}

button:hover {
  background: #005f8a;
}

/* ==============================
   PANEL DEL ADMINISTRADOR - ESTILO RESPONSIVO
   ============================== */

.panel-container {
  max-width: 1000px;
  margin: 40px auto;
  background: #fff;
  padding: 30px 25px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  text-align: center;
}

.panel-container h2 {
  color: #004a80;
  font-size: 1.8em;
  margin-bottom: 25px;
}

/* === Menú principal === */
nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
}

nav a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background-color: #0073aa;
  color: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.25s ease;
  min-width: 220px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

nav a:hover {
  background-color: #005f8a;
  transform: translateY(-2px);
}

nav a.logout {
  background-color: #d63638;
}
nav a.logout:hover {
  background-color: #b72e30;
}

/* ==== RESPONSIVE ==== */

/* Pantallas medianas (tabletas) */
@media screen and (max-width: 900px) {
  .panel-container {
    width: 90%;
    padding: 25px 20px;
  }

  nav {
    gap: 12px;
  }

  nav a {
    font-size: 14px;
    padding: 10px 14px;
    min-width: 180px;
  }
}

/* Pantallas pequeñas (celulares) */
@media screen and (max-width: 600px) {
  .panel-container {
    width: 95%;
    padding: 20px 15px;
    margin-top: 30px;
  }

  .panel-container h2 {
    font-size: 1.4em;
  }

  nav {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  nav a {
    width: 90%;
    font-size: 15px;
    padding: 12px;
    border-radius: 10px;
    justify-content: flex-start;
    text-align: left;
  }

  nav a::before {
    content: '';
    display: inline-block;
    margin-right: 10px;
  }
}

/* Teléfonos muy pequeños (menos de 400px) */
@media screen and (max-width: 400px) {
  nav a {
    width: 100%;
    font-size: 14px;
    padding: 10px;
  }
  .panel-container h2 {
    font-size: 1.2em;
  }
}