/* Estructura básica del panel como card */
.panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: border-box;
    border: 1px solid rgba(0, 0, 0, .125);
    border-radius: 0.25rem;
    margin-bottom: 1rem;
}

.panel-heading {
    padding: 0.5rem 1rem;
    margin-bottom: 0;
    background-color: rgba(0, 0, 0, .03);
    border-bottom: 1px solid rgba(0, 0, 0, .125);
}

.panel-title {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.panel-body {
    flex: 1 1 auto;
    padding: 1rem 1rem;
}

.panel-footer {
    padding: 0.5rem 1rem;
    background-color: rgba(0, 0, 0, .03);
    border-top: 1px solid rgba(0, 0, 0, .125);
}

/* Panel contextuales igualados a cards de Bootstrap 5 */
.panel-default {
    background-color: #fff;
    border-color: #ddd;
}

.panel-primary {
    background-color: #cfe2ff;
    border-color: #084298;
    color: #084298;
}

.panel-success {
    background-color: #d1e7dd;
    border-color: #0f5132;
    color: #0f5132;
}

.panel-info {
    background-color: #cff4fc;
    border-color: #055160;
    color: #055160;
}

.panel-warning {
    background-color: #fff3cd;
    border-color: #664d03;
    color: #664d03;
}

.panel-danger {
    background-color: #f8d7da;
    border-color: #842029;
    color: #842029;
}

/* Opcional: mejora contraste en encabezados contextuales */
.panel-primary>.panel-heading,
.panel-success>.panel-heading,
.panel-info>.panel-heading,
.panel-warning>.panel-heading,
.panel-danger>.panel-heading {
    color: inherit;
    background-color: transparent;
    border-bottom: 1px solid currentColor;
}
/* loading usando Material Symbols Outlined en autorenew*/
.loading-spin {
  display: inline-block;
  animation: spin 1s linear infinite;
  vertical-align: middle;
}

@keyframes spin {
  100% { transform: rotate(360deg); }
}