html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
  transition: background-color 0.3s ease, color 0.3s ease;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin-bottom: 60px;
}

/* Foco accesible */
.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

/* ========== MODO OSCURO ========== */
.dark-mode body {
  background-color: #121212;
  color: #e0e0e0;
}

.dark-mode .card {
  background-color: #1e1e1e;
  border-color: #333;
  color: #e0e0e0;
}

.dark-mode .table {
  background-color: #1f1f1f;
  color: #e0e0e0;
}

.dark-mode .table th,
.dark-mode .table td {
  border-color: #444;
  color: #e0e0e0;
}

.dark-mode .table-striped > tbody > tr:nth-of-type(odd) {
  background-color: #1b1b1b;
}

.dark-mode .table-striped > tbody > tr:nth-of-type(even) {
  background-color: #2a2a2a;
}

.dark-mode .btn {
  border-color: #555;
}

.dark-mode .btn-outline-dark {
  color: #f1f1f1;
  border-color: #888;
}

.dark-mode .form-control,
.dark-mode .form-select {
  background-color: #2b2b2b;
  color: #e0e0e0;
  border-color: #444;
}

.dark-mode .form-label,
.dark-mode .form-check-label {
  color: #e0e0e0;
}

.dark-mode .navbar {
  background-color: #1f1f1f !important;
  border-bottom: 1px solid #333;
}

.dark-mode .navbar .nav-link {
  color: #e0e0e0;
}

.dark-mode .navbar .nav-link:hover {
  color: #0d6efd;
}

.dark-mode .dropdown-menu {
  background-color: #2a2a2a;
  color: #e0e0e0;
  border-color: #444;
}

.dark-mode .dropdown-item:hover {
  background-color: #333;
  color: #fff;
}

.dark-mode footer {
  background-color: #1e1e1e;
  color: #ccc;
  border-top: 1px solid #333;
}

/* Transiciones suaves */
body,
.card,
.table,
.form-control,
.form-select,
.navbar,
footer,
.nav-link,
.dropdown-menu {
  transition: background-color 0.3s ease, color 0.3s ease;
}