/**
 * Compatibilidad visual y funcional Bootstrap 3 sobre Bootstrap 5.3.
 * Permite conservar clases BS3 en plantillas existentes.
 */

/* Utilidades BS3 */
.pull-right { float: right !important; }
.pull-left { float: left !important; }
.center-block { display: block; margin-left: auto; margin-right: auto; }
.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Grid offsets BS3 */
.col-xs-offset-2 { margin-left: 16.66666667%; }
.col-md-offset-2 { margin-left: 16.66666667%; }
.col-sm-offset-2 { margin-left: 16.66666667%; }

/* Botones BS3 */
.btn-default {
    color: #333;
    background-color: #fff;
    border-color: #ccc;
}
.btn-default:hover,
.btn-default:focus {
    color: #333;
    background-color: #e6e6e6;
    border-color: #adadad;
}

/* Navbar BS3 — estructura; colores en btp.css */
.navbar.navbar-default {
    display: block;
    min-height: 75px;
    margin-bottom: 0;
    border-radius: 0;
}
.navbar.navbar-default > .container {
    display: block;
    width: 100%;
}
.navbar.navbar-default > .container::before,
.navbar.navbar-default > .container::after {
    content: " ";
    display: table;
}
.navbar.navbar-default > .container::after {
    clear: both;
}
.navbar-header { float: left; }
.navbar-collapse.collapse { display: block; }
.navbar-collapse.collapse.in,
.navbar-collapse.collapse.show { display: block; }
.navbar-toggle {
    position: relative;
    float: right;
    padding: 9px 10px;
    margin-top: 8px;
    margin-right: 15px;
    margin-bottom: 8px;
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: 4px;
}
.navbar-default .navbar-toggle { border-color: #ddd; }
.navbar-default .navbar-toggle .icon-bar { background-color: #888; }
.navbar-toggle .icon-bar {
    display: block;
    width: 22px;
    height: 2px;
    border-radius: 1px;
    margin-bottom: 4px;
}
.navbar-toggle .icon-bar:last-child { margin-bottom: 0; }
.navbar-fixed-top {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1030;
}
.navbar-nav { float: left; margin: 0; display: block; flex-direction: unset; }
.navbar-nav > li { float: left; display: block; position: relative; }
.navbar-nav > li > a { line-height: 20px; }
.navbar-right { float: right !important; margin-right: -15px; }
.navbar-brand {
    float: left;
    height: 50px;
    padding: 15px 15px;
    font-size: 18px;
    line-height: 20px;
}
.navbar-brand > img { display: inline; }
.caret {
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 2px;
    vertical-align: middle;
    border-top: 4px dashed;
    border-right: 4px solid transparent;
    border-left: 4px solid transparent;
}

/* Dropdown BS3 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1000;
    display: none;
    float: left;
    min-width: 160px;
    padding: 5px 0;
    margin: 2px 0 0;
    list-style: none;
    font-size: 14px;
    text-align: left;
    background-color: #fff;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
}
.dropdown-menu > li > a {
    display: block;
    padding: 3px 20px;
    clear: both;
    font-weight: 400;
    line-height: 1.42857143;
    color: #333;
    white-space: nowrap;
    text-decoration: none;
}
.dropdown-menu > li > a:hover,
.dropdown-menu > li > a:focus {
    text-decoration: none;
}

/* Dropdown submenu (no nativo en BS5) */
.dropdown-submenu { position: relative; }
.dropdown-submenu > .dropdown-menu {
    top: 0;
    left: 100%;
    margin-top: -1px;
    display: none;
}
.dropdown-menu .dropdown-submenu:hover > .dropdown-menu,
.dropdown-menu .dropdown-submenu > .dropdown-menu.show,
.dropdown-menu .submenu:hover > .dropdown-menu,
.dropdown-menu .submenu > .dropdown-menu.show {
    display: block;
}

/* Dropdown principal en navbar */
.navbar-nav > li.dropdown > .dropdown-menu,
.navbar-nav > li.dropdown-submenu > .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: auto;
    margin-top: 0;
}
.navbar-nav > li.dropdown > .dropdown-menu {
    display: none;
}
.navbar-nav > li.dropdown.show > .dropdown-menu,
.navbar-nav > li.dropdown > .dropdown-menu.show {
    display: block;
}

/* Panels BS3 → aspecto card */
.panel {
    margin-bottom: 20px;
    background-color: #fff;
    border: 1px solid transparent;
    border-radius: 4px;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
}
.panel-default { border-color: #ddd; }
.panel-default > .panel-heading {
    color: #333;
    background-color: #f5f5f5;
    border-color: #ddd;
}
.panel-heading {
    padding: 10px 15px;
    border-bottom: 1px solid transparent;
    border-top-left-radius: 3px;
    border-top-right-radius: 3px;
}
.panel-body { padding: 15px; }
.panel-title { margin-top: 0; margin-bottom: 0; font-size: 16px; color: inherit; }
.panel-group .panel { margin-bottom: 0; border-radius: 4px; }
.panel-group .panel + .panel { margin-top: 5px; }
.panel-collapse.collapse:not(.show) { display: none; }
.panel-collapse.collapse.show { display: block; }

/* Formularios BS3 */
.form-group { margin-bottom: 15px; }
.control-label { margin-bottom: 5px; font-weight: 700; display: inline-block; }
.help-block {
    display: block;
    margin-top: 5px;
    margin-bottom: 10px;
    color: #737373;
}
.has-error .form-control { border-color: #a94442; }
.has-error .control-label { color: #a94442; }
.has-error .help-block { color: #a94442; }
.input-group-addon,
.input-group-text.input-group-addon {
    padding: 6px 12px;
    font-size: 14px;
    font-weight: 400;
    line-height: 1;
    color: #555;
    text-align: center;
    background-color: #eee;
    border: 1px solid #ccc;
    border-radius: 4px;
    cursor: pointer;
}
.input-group .input-group-addon:first-child {
    border-right: 0;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.input-group .form-control + .input-group-addon {
    border-left: 0;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}
.radio-inline {
    position: relative;
    display: inline-block;
    padding-left: 20px;
    margin-bottom: 0;
    font-weight: 400;
    vertical-align: middle;
    cursor: pointer;
    margin-right: 10px;
}
.checkbox label { font-weight: 400; cursor: pointer; }

/* Tabs BS3 */
.nav-tabs { border-bottom: 1px solid #ddd; }
.nav-tabs > li { float: left; margin-bottom: -1px; }
.nav-tabs > li > a {
    margin-right: 2px;
    line-height: 1.42857143;
    border: 1px solid transparent;
    border-radius: 4px 4px 0 0;
}
.nav-tabs > li.active > a,
.nav-tabs > li.active > a:focus,
.nav-tabs > li.active > a:hover {
    color: #555;
    cursor: default;
    background-color: #fff;
    border: 1px solid #ddd;
    border-bottom-color: transparent;
}
.tab-content > .tab-pane { display: none; }
.tab-content > .tab-pane.active,
.tab-content > .tab-pane.show.active { display: block; }

/* Breadcrumb BS3 */
.breadcrumb > li + li:before {
    padding: 0 5px;
    color: #ccc;
    content: "/\00a0";
}
.breadcrumb > .active { color: #777; }

/* Alertas BS3 */
.alert-dismissible { padding-right: 35px; }
.alert .close {
    float: right;
    font-size: 21px;
    font-weight: 700;
    line-height: 1;
    color: #000;
    text-shadow: 0 1px 0 #fff;
    opacity: 0.2;
    background: transparent;
    border: 0;
    padding: 0;
    cursor: pointer;
}

/* Modal login BS3 */
.modal.show { display: block; opacity: 1; }
.modal.show .modal-dialog { transform: none; }

/* DataTables botones BS3 (DT2 usa btn-secondary) */
.dt-buttons .btn-default,
.dt-buttons .btn-secondary {
    color: #333;
    background-color: #fff;
    border-color: #ccc;
}
.dt-buttons .btn-default:hover,
.dt-buttons .btn-default:focus,
.dt-buttons .btn-secondary:hover,
.dt-buttons .btn-secondary:focus {
    color: #333;
    background-color: #e6e6e6;
    border-color: #adadad;
}

/* Paginación DataTables estilo BS3 */
.dt-container .pagination,
.dataTables_wrapper .pagination {
    margin: 2px 0;
}
.dt-container .pagination .page-link,
.dataTables_wrapper .pagination .page-link {
    color: #337ab7;
    padding: 6px 12px;
}
.dt-container .pagination .page-item.active .page-link,
.dataTables_wrapper .pagination .page-item.active .page-link {
    background-color: #337ab7;
    border-color: #337ab7;
    color: #fff;
}
.dt-container .pagination .page-item.disabled .page-link,
.dataTables_wrapper .pagination .page-item.disabled .page-link {
    color: #777;
}

/* Margen utilitario usado en vistas */
.margin-top-23 { margin-top: 23px; }

/* Imagen responsive BS3 alias */
.img-responsive { max-width: 100%; height: auto; display: block; }

/* Well BS3 */
.well {
    min-height: 20px;
    padding: 19px;
    margin-bottom: 20px;
    background-color: #f5f5f5;
    border: 1px solid #e3e3e3;
    border-radius: 4px;
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05);
}

@media (max-width: 767px) {
    .navbar-header { float: none; }
    .navbar-toggle { display: block; }
    .navbar-collapse.collapse { display: none !important; }
    .navbar-collapse.collapse.show { display: block !important; }
    .navbar-nav { float: none !important; margin: 7.5px -15px; }
    .navbar-nav > li { float: none; }
    .navbar-right { float: none !important; }
}