:root{
  --brand-primary:#0A335C;
  --brand-secondary:#E31837;
  --brand-accent:#082746;
  --brand-primary-rgb:10,51,92;
  --vrht-bg:#f4f7f6;
  --vrht-surface:#ffffff;
  --vrht-soft:#f8fafc;
  --vrht-border:#dbe3ec;
  --vrht-text:#0f172a;
  --vrht-muted:#64748b;
  --vrht-sidebar-width:276px;
  --vrht-topbar-height:64px;
  --vrht-shadow:0 8px 22px rgba(15,23,42,.065);
  --vrht-radius:1rem;
}

html[data-bs-theme="dark"]{
  --vrht-bg:#0f1115;
  --vrht-surface:#1f2937;
  --vrht-soft:#111827;
  --vrht-border:#374151;
  --vrht-text:#f8fafc;
  --vrht-muted:#c4cedb;
  --vrht-shadow:0 10px 24px rgba(0,0,0,.24);
}

*{box-sizing:border-box}
html,body{width:100%;max-width:100%;overflow-x:hidden}
body{font-family:'Inter',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--vrht-bg);color:var(--vrht-text);font-size:.95rem;letter-spacing:-.01em}
a{color:var(--brand-primary)}
html[data-bs-theme="dark"] a:not(.btn):not(.vrht-nav-link):not(.mobile-bottom-link){color:#7dd3fc}
h1,h2,h3,h4,h5,h6,.navbar-brand{font-weight:600;letter-spacing:-.025em;color:var(--vrht-text)}
.text-muted{color:var(--vrht-muted)!important}

/* Bootstrap institucional */
.btn{font-weight:600;border-radius:.55rem;padding:.52rem .92rem;transition:.18s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--brand-primary)!important;border-color:var(--brand-primary)!important;color:#fff!important;box-shadow:0 2px 5px rgba(var(--brand-primary-rgb),.22)}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-accent)!important;border-color:var(--brand-accent)!important}
.btn-success{background:#10b981!important;border-color:#10b981!important}
.btn-danger{background:#ef4444!important;border-color:#ef4444!important}
.btn-outline-primary{color:var(--brand-primary)!important;border-color:var(--brand-primary)!important}
.btn-outline-primary:hover{background:var(--brand-primary)!important;color:#fff!important}
.form-control,.form-select{min-height:42px;border-radius:.55rem;border-color:var(--vrht-border);background-color:var(--vrht-surface);color:var(--vrht-text)}
.form-control:focus,.form-select:focus{border-color:var(--brand-primary);box-shadow:0 0 0 .22rem rgba(var(--brand-primary-rgb),.17)}
html[data-bs-theme="dark"] .form-control,html[data-bs-theme="dark"] .form-select{background:#374151;border-color:#4b5563;color:#f8fafc}
.form-label{font-weight:600;color:var(--vrht-text);font-size:.88rem}
.form-text{color:var(--vrht-muted)}

/* Login inspirado en Biblioteca Virtual V9 */
.vrht-login-page{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px;background-color:#f4f7f6;background-image:url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%230a335c" fill-opacity="0.04"%3E%3Cpath d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V8h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V8h4V4H6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E')}
html[data-bs-theme="dark"] .vrht-login-page{background-color:#0f1115;background-image:none}
.vrht-login-shell{display:flex;max-width:960px;width:min(96vw,960px);background:var(--vrht-surface);border-radius:1.2rem;box-shadow:0 20px 44px rgba(var(--brand-primary-rgb),.16);overflow:hidden;animation:vrhtSlideUp .45s ease-out}
@keyframes vrhtSlideUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
.vrht-login-brand{width:45%;background:linear-gradient(135deg,var(--brand-primary),#154e8a);color:#fff;padding:3rem;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;position:relative}
.vrht-login-brand::after{content:'';position:absolute;right:0;top:0;bottom:0;width:6px;background:var(--brand-secondary)}
.vrht-login-brand img{width:150px;height:150px;object-fit:contain;background:rgba(255,255,255,.97);padding:.35rem;border:3px solid #fff;border-radius:1rem;box-shadow:0 8px 18px rgba(0,0,0,.22)}
.vrht-login-brand h1{color:#fff;font-size:1.45rem;margin:1.25rem 0 .4rem}
.vrht-login-brand p{color:rgba(255,255,255,.82);margin:0}
.vrht-login-form{width:55%;padding:3.4rem;display:flex;flex-direction:column;justify-content:center}
.vrht-login-form h2{color:var(--brand-primary);font-size:1.8rem;margin-bottom:.35rem}
html[data-bs-theme="dark"] .vrht-login-form h2{color:#7dd3fc}
.vrht-login-kicker{display:inline-flex;align-items:center;gap:.35rem;width:max-content;padding:.35rem .65rem;background:rgba(var(--brand-primary-rgb),.08);border:1px solid rgba(var(--brand-primary-rgb),.14);border-radius:999px;color:var(--brand-primary);font-weight:700;font-size:.75rem;text-transform:uppercase;letter-spacing:.045em;margin-bottom:1rem}
.vrht-input-icon{position:relative}.vrht-input-icon>.bi{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:#94a3b8;z-index:2}.vrht-input-icon>.form-control{padding-left:42px}

/* Shell de la aplicación */
.vrht-app-shell{height:100dvh;overflow:hidden;display:flex;background:var(--vrht-bg)}
.vrht-sidebar{width:var(--vrht-sidebar-width);min-width:var(--vrht-sidebar-width);height:100dvh;background:var(--brand-primary)!important;color:#fff;border-right:3px solid var(--brand-secondary);transition:width .22s ease,min-width .22s ease,transform .25s ease;overflow-y:auto;overscroll-behavior:contain;z-index:1045}
.vrht-sidebar-inner{min-height:100%;display:flex;flex-direction:column;padding:1rem}
.vrht-sidebar-brand{text-align:center;padding:.35rem .45rem 1.05rem;border-bottom:1px solid rgba(255,255,255,.16)}
.vrht-sidebar-logo{width:82px;height:82px;object-fit:contain;background:rgba(255,255,255,.97);border-radius:.9rem;padding:.25rem;box-shadow:0 6px 14px rgba(0,0,0,.16)}
.vrht-system-name{font-weight:700;font-size:1rem;line-height:1.25;margin-top:.8rem;color:#fff}.vrht-institution-name{font-size:.76rem;color:rgba(255,255,255,.66);margin-top:.2rem}
.vrht-user-card{margin:1rem .25rem .4rem;padding:.8rem;background:rgba(255,255,255,.075);border:1px solid rgba(255,255,255,.1);border-radius:.75rem;display:flex;gap:.65rem;align-items:center}
.vrht-user-avatar{width:38px;height:38px;min-width:38px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.16);font-weight:800;color:#fff}.vrht-user-name{font-size:.88rem;font-weight:600;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.vrht-user-role{font-size:.7rem;text-transform:uppercase;letter-spacing:.04em;color:rgba(255,255,255,.64)}
.vrht-nav-section{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.48);padding:.95rem .65rem .35rem}
.vrht-nav-link{display:flex;align-items:center;gap:.7rem;color:rgba(255,255,255,.9)!important;text-decoration:none;padding:.62rem .68rem;border-radius:.55rem;margin:.08rem 0;font-size:.88rem;transition:.15s ease;position:relative}.vrht-nav-link i{width:1.15rem;text-align:center;font-size:1rem}.vrht-nav-link:hover{background:rgba(255,255,255,.1);color:#fff!important}.vrht-nav-link.active{background:var(--brand-accent);color:#fff!important;box-shadow:inset 3px 0 0 var(--brand-secondary)}
.vrht-nav-link.text-danger{color:#fecaca!important}.vrht-sidebar-footer{margin-top:auto;border-top:1px solid rgba(255,255,255,.15);padding:.9rem .5rem .2rem;text-align:center;font-size:.7rem;color:rgba(255,255,255,.55)}

.vrht-main-column{min-width:0;flex:1 1 auto;height:100dvh;display:flex;flex-direction:column;overflow:hidden}.vrht-topbar{height:var(--vrht-topbar-height);min-height:var(--vrht-topbar-height);display:flex;align-items:center;gap:.75rem;padding:0 1.25rem;background:var(--vrht-surface);border-bottom:1px solid var(--vrht-border);box-shadow:0 2px 10px rgba(15,23,42,.035);z-index:1030}.vrht-topbar-title{font-weight:700;color:var(--vrht-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.vrht-topbar-subtitle{font-size:.75rem;color:var(--vrht-muted)}.vrht-topbar-spacer{flex:1}.vrht-icon-btn{width:40px;height:40px;display:inline-grid;place-items:center;border-radius:50%;border:1px solid var(--vrht-border);background:var(--vrht-surface);color:var(--vrht-text)}.vrht-icon-btn:hover{background:var(--vrht-soft)}
.vrht-main-content{flex:1 1 auto;overflow-y:auto;overflow-x:hidden;padding:1.5rem;background:var(--vrht-bg);scrollbar-gutter:stable}.vrht-page-heading{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1rem}.vrht-page-heading h1{font-size:1.5rem;margin:0}.vrht-page-heading .vrht-page-context{font-size:.78rem;color:var(--vrht-muted)}

/* Sidebar plegable escritorio */
body.vrht-sidebar-collapsed .vrht-sidebar{width:84px;min-width:84px}
body.vrht-sidebar-collapsed .vrht-sidebar .vrht-system-name,body.vrht-sidebar-collapsed .vrht-sidebar .vrht-institution-name,body.vrht-sidebar-collapsed .vrht-sidebar .vrht-user-meta,body.vrht-sidebar-collapsed .vrht-sidebar .vrht-nav-section,body.vrht-sidebar-collapsed .vrht-sidebar .vrht-nav-label,body.vrht-sidebar-collapsed .vrht-sidebar .vrht-sidebar-footer{display:none!important}
body.vrht-sidebar-collapsed .vrht-sidebar-logo{width:48px;height:48px}body.vrht-sidebar-collapsed .vrht-sidebar-brand{padding-bottom:.7rem}body.vrht-sidebar-collapsed .vrht-user-card{justify-content:center;padding:.55rem}body.vrht-sidebar-collapsed .vrht-nav-link{justify-content:center;padding:.7rem}body.vrht-sidebar-collapsed .vrht-nav-link i{font-size:1.1rem;width:auto}

/* Tarjetas / Dashboard */
.card{background:var(--vrht-surface);color:var(--vrht-text);border:1px solid var(--vrht-border)!important;border-radius:var(--vrht-radius);box-shadow:var(--vrht-shadow)!important}.card-header{background:transparent;border-color:var(--vrht-border)}
.vrht-kpi{height:100%;overflow:hidden;position:relative}.vrht-kpi .card-body{display:flex;align-items:center;gap:.85rem;padding:1rem}.vrht-kpi-icon{width:46px;height:46px;min-width:46px;border-radius:.85rem;display:grid;place-items:center;font-size:1.15rem}.vrht-kpi-label{font-size:.7rem;letter-spacing:.045em;text-transform:uppercase;color:var(--vrht-muted);font-weight:700}.vrht-kpi-value{font-size:1.55rem;font-weight:750;color:var(--vrht-text);line-height:1.15;margin-top:.12rem}.vrht-kpi-primary .vrht-kpi-icon{background:rgba(var(--brand-primary-rgb),.1);color:var(--brand-primary)}.vrht-kpi-success .vrht-kpi-icon{background:rgba(16,185,129,.12);color:#059669}.vrht-kpi-warning .vrht-kpi-icon{background:rgba(245,158,11,.13);color:#d97706}.vrht-kpi-danger .vrht-kpi-icon{background:rgba(239,68,68,.12);color:#dc2626}.vrht-kpi-info .vrht-kpi-icon{background:rgba(14,165,233,.12);color:#0284c7}.vrht-quick-card .card-body{padding:1rem 1.1rem}.vrht-section-title{display:flex;align-items:center;gap:.5rem;font-size:1rem;font-weight:700;margin-bottom:1rem}.vrht-section-title i{color:var(--brand-primary)}

/* Tablas */
.table{--bs-table-bg:transparent;--bs-table-color:var(--vrht-text);--bs-table-border-color:var(--vrht-border);--bs-table-hover-bg:rgba(var(--brand-primary-rgb),.045);color:var(--vrht-text);font-size:.88rem}.table thead th{background:var(--vrht-soft)!important;color:var(--vrht-muted)!important;text-transform:uppercase;letter-spacing:.035em;font-size:.7rem;font-weight:750;border-bottom-color:var(--vrht-border);padding:.75rem}.table tbody td{border-color:var(--vrht-border);padding:.75rem}.table-responsive{border-radius:var(--vrht-radius)}
html[data-bs-theme="dark"] .table tbody tr:hover td{background:#334155!important}.badge{font-weight:700;letter-spacing:.01em}

/* Theme toggle */
.vrht-theme-toggle{position:fixed;right:18px;bottom:20px;z-index:1090;width:44px;height:44px;display:grid;place-items:center;border-radius:50%;box-shadow:0 8px 20px rgba(0,0,0,.18)}

/* Escáner */
.scanner-wrap{max-width:760px!important}.scanner-wrap .card{overflow:hidden}.scanner-wrap #reader{border:0!important;border-radius:.9rem;overflow:hidden;background:#08111d;padding:.5rem}.scanner-wrap #reader video{border-radius:.75rem}.scan-result{min-height:132px;border-radius:.85rem}.page-scan .vrht-main-content,.page-class_scan .vrht-main-content{background:linear-gradient(180deg,rgba(var(--brand-primary-rgb),.045),var(--vrht-bg) 210px)}

/* Navegación móvil inferior */
.vrht-mobile-bottom{display:none}

/* Tablas móviles tipo Biblioteca V9 */
@media(max-width:767.98px){
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom,0px))}
  .vrht-app-shell{height:100dvh}
  .vrht-sidebar.offcanvas-start{width:min(86vw,330px);max-width:calc(100vw - 54px);height:100dvh;border-right:3px solid var(--brand-secondary)!important}
  .vrht-sidebar-inner{padding-bottom:calc(5.5rem + env(safe-area-inset-bottom,0px))}
  .vrht-topbar{height:58px;min-height:58px;padding:0 .75rem}.vrht-topbar-title{font-size:.93rem}.vrht-topbar-subtitle{display:none}.vrht-main-content{padding:1rem .85rem 1.25rem}.vrht-page-heading{margin-bottom:.8rem}.vrht-page-heading h1{font-size:1.25rem}
  .vrht-mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:1080;height:calc(64px + env(safe-area-inset-bottom,0px));padding:6px 6px env(safe-area-inset-bottom,0px);display:grid;grid-template-columns:repeat(4,1fr);background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--vrht-border);box-shadow:0 -5px 18px rgba(15,23,42,.08)}
  html[data-bs-theme="dark"] .vrht-mobile-bottom{background:rgba(17,24,39,.96)}
  .mobile-bottom-link{border:0;background:transparent;color:#64748b!important;text-decoration:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;font-size:.63rem;font-weight:650;border-radius:.6rem;min-width:0}.mobile-bottom-link i{font-size:1.22rem}.mobile-bottom-link.active{color:var(--brand-primary)!important;background:rgba(var(--brand-primary-rgb),.075)}html[data-bs-theme="dark"] .mobile-bottom-link.active{color:#7dd3fc!important;background:rgba(56,189,248,.09)}
  .vrht-theme-toggle{right:12px;bottom:calc(74px + env(safe-area-inset-bottom,0px));width:40px;height:40px}
  .row.g-3>.col-6 .vrht-kpi .card-body{padding:.8rem;gap:.55rem}.vrht-kpi-icon{width:38px;height:38px;min-width:38px;border-radius:.7rem}.vrht-kpi-value{font-size:1.25rem}.vrht-kpi-label{font-size:.61rem}
  .btn{min-height:40px}.btn-sm{min-height:34px}
  .table-responsive.mobile-table-wrapper{overflow-x:visible!important}
  .mobile-stack-table{border-collapse:separate!important;border-spacing:0 .7rem!important;min-width:0!important}
  .mobile-stack-table thead{display:none!important}.mobile-stack-table,.mobile-stack-table tbody,.mobile-stack-table tr,.mobile-stack-table td{display:block!important;width:100%!important}
  .mobile-stack-table tr{position:relative;background:var(--vrht-surface);border:1px solid var(--vrht-border);border-radius:.85rem;box-shadow:0 6px 16px rgba(15,23,42,.055);overflow:hidden;margin-bottom:.72rem}
  .mobile-stack-table td{border:0!important;padding:.72rem .9rem!important;white-space:normal!important;max-width:100%!important}
  .mobile-stack-table td.mobile-summary-cell{display:flex!important;gap:.7rem;align-items:flex-start;background:rgba(var(--brand-primary-rgb),.035);border-bottom:1px solid var(--vrht-border)!important}
  .mobile-row-toggle{width:2rem;height:2rem;min-width:2rem;border-radius:50%!important;display:inline-flex!important;align-items:center!important;justify-content:center!important;padding:0!important;font-weight:800}.mobile-row-toggle .bi{pointer-events:none}
  .mobile-stack-table td.mobile-detail-cell,.mobile-stack-table td.mobile-actions-cell{display:none!important}.mobile-stack-table tr.mobile-expanded td.mobile-detail-cell,.mobile-stack-table tr.mobile-expanded td.mobile-actions-cell{display:block!important}
  .mobile-stack-table td.mobile-detail-cell::before,.mobile-stack-table td.mobile-actions-cell::before{content:attr(data-label);display:block;font-size:.67rem;font-weight:750;color:var(--vrht-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:.2rem}
  .mobile-stack-table .mobile-actions-cell .btn,.mobile-stack-table .mobile-actions-cell form{margin:.15rem .12rem .15rem 0}
  .scanner-wrap{margin:0!important;max-width:none!important}.page-scan .vrht-main-content,.page-class_scan .vrht-main-content{padding:.65rem}.page-scan .vrht-page-heading,.page-class_scan .vrht-page-heading{margin:.15rem .2rem .65rem}.scanner-wrap .card-body{padding:.75rem}.scanner-wrap #reader{min-height:310px}.scanner-wrap #reader video{max-height:55dvh;object-fit:cover}
}

@media(max-width:768px){
  .vrht-login-page{align-items:flex-start;padding:10px;overflow-y:auto}.vrht-login-shell{flex-direction:column;width:100%;max-width:430px;border-radius:16px;box-shadow:0 10px 26px rgba(var(--brand-primary-rgb),.14)}.vrht-login-brand{width:100%;padding:1rem .9rem 1.05rem}.vrht-login-brand::after{width:100%;height:5px;right:0;bottom:0;top:auto}.vrht-login-brand img{width:76px;height:76px;border-width:2px;border-radius:.75rem}.vrht-login-brand h1{font-size:1rem;margin:.55rem 0 .2rem}.vrht-login-brand p{font-size:.78rem}.vrht-login-form{width:100%;padding:1.55rem 1.15rem 1.35rem}.vrht-login-form h2{font-size:1.45rem}.vrht-login-kicker{font-size:.66rem;margin-bottom:.65rem}
}

@media(min-width:768px){.vrht-sidebar .offcanvas-header{display:none!important}}

/* Scrollbars */
*{scrollbar-width:thin;scrollbar-color:#a8b3c2 transparent}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#b4bdc9;border-radius:10px;border:2px solid transparent;background-clip:padding-box}html[data-bs-theme="dark"] ::-webkit-scrollbar-thumb{background:#4b5563;background-clip:padding-box}

@media print{.vrht-sidebar,.vrht-topbar,.vrht-mobile-bottom,.vrht-theme-toggle,.btn,form{display:none!important}.vrht-app-shell,.vrht-main-column{height:auto!important;display:block!important}.vrht-main-content{overflow:visible!important;padding:0!important}.card{box-shadow:none!important}.vrht-page-heading{margin-bottom:1rem}}
.min-w-0{min-width:0!important}
@media(max-width:767.98px){body.vrht-sidebar-collapsed .vrht-sidebar.offcanvas-start{width:min(86vw,330px)!important;min-width:min(86vw,330px)!important}.page-class-scan .vrht-main-content{padding:.65rem}.page-class-scan .vrht-page-heading{margin:.15rem .2rem .65rem}}

/* PATCH cámara móvil QR */
.mobile-camera-controls{display:flex;flex-direction:column;align-items:center;text-align:center;gap:.7rem;padding:1rem 1rem 1.15rem;border:1px solid var(--bs-border-color);border-radius:1rem;background:var(--bs-body-bg);margin-bottom:.8rem}
.mobile-camera-controls.camera-running{padding:.55rem .8rem;gap:.25rem;border-style:dashed}
.mobile-camera-controls.camera-running .mobile-camera-icon{display:none}
.mobile-camera-controls.camera-running .mobile-camera-help{font-size:.83rem;margin:0}
.mobile-camera-controls.camera-running .mobile-camera-diagnostic{margin-top:.15rem!important}
.mobile-camera-icon{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:rgba(var(--brand-primary-rgb),.10);color:var(--brand-primary);font-size:1.65rem;font-weight:800}
.mobile-camera-title{font-size:1.05rem;font-weight:800;color:var(--bs-emphasis-color)}
.mobile-camera-help{max-width:520px;color:var(--bs-secondary-color);line-height:1.45}
.mobile-camera-start,.mobile-camera-retry{min-height:46px;min-width:180px;border-radius:.8rem;font-weight:700}
.mobile-camera-diagnostic{max-width:560px;line-height:1.4}
.scanner-wrap #reader{min-height:0!important}
.scanner-wrap #reader:empty{display:none}
.scanner-wrap #reader video{width:100%!important;height:auto!important;max-height:58dvh!important;object-fit:cover!important}
.scanner-wrap #reader__dashboard_section_csr span,.scanner-wrap #reader__dashboard_section_swaplink{display:none!important}
@media(max-width:767.98px){
  .mobile-camera-controls{padding:.9rem .75rem}
  .mobile-camera-start,.mobile-camera-retry{width:100%;min-height:50px}
  .scanner-wrap #reader video{max-height:52dvh!important}
}