body {
  font-family: 'Arial', sans-serif;
  background-color: #121212;
  color: #e0e0e0;
  margin: 0;
  padding: 0;
}

.login-container {
  width: 350px;
  margin: 100px auto;
  padding: 25px;
  background: #1e1e1e;
  border-radius: 10px;
  box-shadow: 0 0 20px #00e5ff;
  text-align: center;
  animation: fadeIn 1s ease-out;
}

input {
  width: 90%;
  margin: 10px 0;
  padding: 12px;
  border-radius: 5px;
  border: 1px solid #00e5ff;
  background: #121212;
  color: #e0e0e0;
}

input::placeholder {
  color: #888;
}

button {
  width: 95%;
  padding: 12px;
  margin-top: 10px;
  background-color: #00ff99;
  border: none;
  color: #121212;
  font-size: 16px;
  font-weight: bold;
  border-radius: 6px;
  cursor: pointer;
  text-transform: uppercase;
  transition: 0.3s;
  box-shadow: 0 0 10px #00ff99;
}

button:hover {
  background-color: #00e080;
  box-shadow: 0 0 20px #00ff99;
}

.error {
  color: #ff5370;
  font-weight: bold;
  margin-bottom: 15px;
}

h3 {
  color: #00e5ff;
  text-shadow: 0 0 8px #00e5ff;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================
   ESTILO GLOBAL PARA TODOS LOS BOTONES
   ================================ */
button, .btn, input[type="submit"], input[type="button"] {
    padding: 6px 12px !important;
    font-size: 13px !important;
    border-radius: 6px !important;
}

/* Botón principal (guardar, aceptar, confirmar) */
.btn-main, .btn-primary {
    padding: 8px 16px !important;
    font-size: 14px !important;
    border-radius: 8px !important;
}

/* Botones pequeños de acción (editar, ver, borrar) */
.btn-edit,
.btn-save,
.btn-delrow,
.btn-view {
    padding: 4px 10px !important;
    font-size: 12px !important;
    border-radius: 6px !important;
}

/* Ajuste de íconos dentro de botones */
button i,
.btn i {
    font-size: 14px !important;
}

/* Botones del panel lateral */
.menu-item button,
.menu-item a,
.sidebar a {
    padding: 6px 10px !important;
    font-size: 14px !important;
}