:root {
            
            --primary-color: var(--navy);
            --secondary-color: var(--navy-medio);
            --accent-color: var(--oro);

            
            --tipo-lectura-zh: 'Noto Serif SC', 'Songti SC', 'SimSun', 'Noto Serif CJK SC', serif;
            

            
            
            --success-color: var(--correcto);
            --warning-color: var(--atencion);
            --danger-color: var(--error);

            
            --gray-50: var(--papel);
            --gray-100: var(--pergamino);
            --gray-200: var(--filete);
            --gray-300: var(--filete);
            --gray-400: var(--tinta-suave);
            --gray-500: var(--tinta-suave);
            --gray-600: var(--tinta-suave);
            --gray-700: var(--tinta);
            --gray-800: var(--tinta);
            --gray-900: var(--tinta);

            
            --glass-bg: rgba(255, 255, 255, 0.7);
            --glass-border: rgba(255, 255, 255, 0.3);
            --sidebar-glass: rgba(255, 255, 255, 0.85);

            
            --sidebar-width: 280px;
            --sidebar-collapsed-width: 80px;
            --navbar-height: 80px;

            
            
            
            --shadow-premium: var(--sombra-3);
            --shadow-lg: var(--sombra-3);

            
            --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            --transition-fast: all 0.2s ease;
        }

        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: var(--tipo-interfaz);
            
            font-size: var(--t-interfaz);
            line-height: var(--lh-interfaz);
            color: var(--gray-700);
            background: var(--gray-50);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        
        .campus-navbar {
            background: var(--glass-bg);
            backdrop-filter: blur(15px) saturate(180%);
            -webkit-backdrop-filter: blur(15px) saturate(180%);
            border-bottom: 1px solid var(--glass-border);
            height: var(--navbar-height);
            padding: 0;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            box-shadow: var(--shadow-premium);
        }

        .campus-navbar .container-fluid {
            height: 100%;
            display: flex;
            align-items: center;
            padding: 0 2rem;
        }

        .navbar-brand-campus {
            display: flex;
            align-items: center;
            color: var(--primary-color) !important;
            text-decoration: none;
            font-weight: 700;
            font-size: var(--t-2xl);
            margin-left: 1rem;
            transition: var(--transition);
            letter-spacing: -0.5px;
        }

        .navbar-brand-campus:hover {
            color: var(--warning-color) !important;
            transform: translateY(-1px);
        }

        
        .marca-nombre {
            border-left: 1px solid var(--filete);
            padding-left: 0.7rem;
            margin-left: 0.7rem;
            line-height: 1.15;
        }
        .marca-titulo {
            display: block;
            font-family: var(--tipo-institucional);
            font-size: var(--t-base);
            color: var(--navy);
        }
        .marca-glosa {
            display: block;
            font-size: 0.5rem;
            letter-spacing: 0.19em;
            font-weight: 600;
            color: var(--oro-hondo);
            margin-top: 2px;
        }

        
        .campus-logo {
            height: 60px;
            width: auto;
            transition: var(--transition);
            filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
        }

        .navbar-brand-campus:hover .campus-logo {
            transform: scale(1.05);
            filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
        }

        
        @media (max-width: 768px) {
            .campus-logo {
                height: 48px;
            }
        }

        @media (max-width: 576px) {
            .campus-logo {
                height: 40px;
            }
        }

        .sidebar-toggle {
            background: var(--gray-100);
            border: none;
            color: var(--primary-color);
            font-size: var(--t-xl);
            padding: 0.75rem;
            border-radius: var(--radio-l);
            transition: var(--transition);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .sidebar-toggle:hover {
            background: var(--primary-color);
            color: var(--papel);
            transform: rotate(90deg);
        }

        .navbar-user {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .navbar-nav .nav-link {
            color: var(--gray-700) !important;
            font-weight: 600;
            padding: 0.6rem 1.2rem;
            border-radius: var(--radio-l);
            transition: var(--transition);
        }

        .navbar-nav .nav-link:hover {
            background: var(--primary-color);
            color: var(--papel) !important;
            box-shadow: var(--shadow-premium);
        }

        .dropdown-menu {
            border-radius: var(--radio-l);
            border: 1px solid var(--gray-200);
            box-shadow: var(--shadow-lg);
            padding: 0.5rem 0;
        }

        .dropdown-item {
            padding: 0.75rem 1.25rem;
            font-weight: 500;
            color: var(--gray-700);
            transition: var(--transition);
        }

        .dropdown-item:hover {
            background: var(--gray-100);
            color: var(--primary-color);
        }

        
        
        .saltar-al-contenido {
          position: absolute; left: .5rem; top: -4rem; z-index: 2000;
          background: var(--navy); color: var(--papel);
          padding: .7rem 1.1rem; border-radius: var(--radio-xs); text-decoration: none;
          font-family: var(--tipo-interfaz); font-size: var(--t-m);
          transition: top .15s ease;
        }
        .saltar-al-contenido:focus { top: .5rem; }
        main:focus { outline: none; }
        @media (prefers-reduced-motion: reduce) {
          .saltar-al-contenido { transition: none; }
        }

        @media (pointer: coarse) {
            .sidebar-toggle,
            .navbar-nav .nav-link,
            .dropdown-item,
            .sidebar-link {
                min-height: var(--tactil-min);
                display: flex;
                align-items: center;
            }
            .navbar-brand-campus { min-height: var(--tactil-min); }
        }

        
        .campus-sidebar {
            position: fixed;
            top: var(--navbar-height);
            left: 0;
            width: var(--sidebar-width);
            height: calc(100vh - var(--navbar-height));
            background: var(--sidebar-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-right: 1px solid var(--glass-border);
            transition: var(--transition);
            overflow-y: auto;
            overflow-x: hidden;
            z-index: 1040;
        }

        .campus-sidebar.collapsed {
            width: var(--sidebar-collapsed-width);
        }

        
        .campus-sidebar::-webkit-scrollbar {
            width: 4px;
        }

        .campus-sidebar::-webkit-scrollbar-track {
            background: transparent;
        }

        .campus-sidebar::-webkit-scrollbar-thumb {
            background: var(--gray-300);
            border-radius: var(--radio-xs);
        }

        .campus-sidebar::-webkit-scrollbar-thumb:hover {
            background: var(--gray-400);
        }

        .sidebar-content {
            padding: 1.5rem 0;
        }

        .sidebar-section {
            margin-bottom: 2rem;
        }

        .sidebar-title {
            font-size: var(--t-s);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--gray-400);
            padding: 0 1.5rem;
            margin-bottom: 0.75rem;
            transition: var(--transition);
        }

        .campus-sidebar.collapsed .sidebar-title {
            opacity: 0;
            visibility: hidden;
        }

        .sidebar-nav {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sidebar-item {
            margin-bottom: 2px;
        }

        .sidebar-link {
            display: flex;
            align-items: center;
            padding: 0.875rem 1.5rem;
            color: var(--gray-600);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
            border-radius: 0;
            margin: 0 0.75rem;
            border-radius: var(--radio-l);
        }

        .sidebar-link:hover {
            background: var(--gray-100);
            color: var(--primary-color);
            text-decoration: none;
        }

        .sidebar-link.active {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--papel);
            box-shadow: var(--shadow-sm);
        }

        .sidebar-icon {
            width: 20px;
            height: 20px;
            margin-right: 0.875rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: var(--t-l);
        }

        .sidebar-text {
            font-weight: 500;
            font-size: var(--t-m);
            transition: var(--transition);
            white-space: nowrap;
        }

        .campus-sidebar.collapsed .sidebar-link {
            justify-content: center;
            padding: 1rem 0.75rem;
            margin: 0 0.5rem;
        }

        .campus-sidebar.collapsed .sidebar-icon {
            margin-right: 0;
            font-size: var(--t-xl);
        }

                
        .sidebar-seccion {
            padding: .9rem 1.25rem .25rem;
            letter-spacing: .04em;
            pointer-events: none;
        }
        .campus-sidebar.collapsed .sidebar-seccion { display: none; }

        .campus-sidebar.collapsed .sidebar-text {
            opacity: 0;
            width: 0;
            overflow: hidden;
        }

        
        .campus-sidebar.collapsed .sidebar-link::after {
            content: attr(data-tooltip);
            position: absolute;
            left: calc(100% + 12px);
            top: 50%;
            transform: translateY(-50%);
            background: var(--gray-800);
            color: var(--papel);
            padding: 0.5rem 0.75rem;
            border-radius: var(--radio-m);
            font-size: var(--t-sm);
            font-weight: 500;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            pointer-events: none;
            z-index: 1000;
            box-shadow: var(--shadow-lg);
        }

        .campus-sidebar.collapsed .sidebar-link::before {
            content: '';
            position: absolute;
            left: calc(100% + 6px);
            top: 50%;
            transform: translateY(-50%);
            border: 6px solid transparent;
            border-right-color: var(--gray-800);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 1000;
        }

        .campus-sidebar.collapsed .sidebar-link:hover::after,
        .campus-sidebar.collapsed .sidebar-link:hover::before {
            opacity: 1;
            visibility: visible;
        }

        
        .main-wrapper {
            margin-left: var(--sidebar-width);
            margin-top: var(--navbar-height);
            transition: var(--transition);
            min-height: calc(100vh - var(--navbar-height));
        }

        .campus-sidebar.collapsed~.main-wrapper {
            margin-left: var(--sidebar-collapsed-width);
        }

        .main-content {
            padding: 2rem;
            max-width: none;
        }

        
        .card {
            border: none;
            border-radius: var(--radio-xl);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            background: var(--papel);
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .card-header {
            
            background-color: var(--pergamino);
            border-bottom: 1px solid var(--gray-200);
            padding: 1.25rem 1.5rem;
            font-weight: 600;
        }

        .card-body {
            padding: 1.5rem;
        }

        .course-image {
            height: 200px;
            object-fit: cover;
            border-radius: 16px 16px 0 0;
            transition: var(--transition);
        }

        .card:hover .course-image {
            transform: scale(1.05);
        }

        
        .btn {
            font-weight: 500;
            border-radius: var(--radio-l);
            padding: 0.75rem 1.5rem;
            transition: var(--transition);
            
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
            color: var(--papel);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            color: var(--papel);
        }

        .btn-success {
            background: var(--success-color);
            color: var(--papel);
        }

        .btn-warning {
            background: var(--warning-color);
            color: var(--papel);
        }

        .btn-danger {
            background: var(--danger-color);
            color: var(--papel);
        }

        
        .progress {
            height: 12px;
            border-radius: var(--radio-m);
            background: var(--gray-200);
            overflow: hidden;
        }

        .progress-bar {
            background: linear-gradient(90deg, var(--success-color), var(--correcto));
            border-radius: var(--radio-m);
            transition: var(--transition);
        }

        
        .alert {
            border: none;
            border-radius: var(--radio-l);
            padding: 1rem 1.25rem;
            margin-bottom: 1.5rem;
            font-weight: 500;
            box-shadow: var(--shadow-sm);
        }

        
        .alert-success {
            background: var(--correcto-tenue);
            color: var(--tinta);
            border-left: 4px solid var(--success-color);
        }

        .alert-danger {
            background: var(--error-tenue);
            color: var(--tinta);
            border-left: 4px solid var(--danger-color);
        }

        .alert-warning {
            background: var(--atencion-tenue);
            color: var(--tinta);
            border-left: 4px solid var(--warning-color);
        }

        .alert-info {
            background: var(--pergamino);
            color: var(--tinta);
            border-left: 4px solid var(--aviso);
        }

        
        .lesson-status {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: inline-block;
            margin-right: 10px;
            transition: var(--transition);
        }

        .lesson-completed {
            background: var(--success-color);
            box-shadow: 0 0 0 3px rgba(var(--correcto-rgb), 0.2);
        }

        .lesson-pending {
            background: var(--gray-300);
        }

        .lesson-current {
            background: var(--warning-color);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(var(--atencion-rgb), 0.7);
            }

            70% {
                box-shadow: 0 0 0 10px rgba(var(--atencion-rgb), 0);
            }

            100% {
                box-shadow: 0 0 0 0 rgba(var(--atencion-rgb), 0);
            }
        }

        
        .badge {
            font-size: var(--t-sm);
            font-weight: 500;
            padding: 0.5em 0.75em;
            border-radius: var(--radio-m);
        }

        
        @media (max-width: 1024px) {
            .main-content {
                padding: 1.5rem;
            }
        }

        @media (max-width: 768px) {
            .campus-sidebar {
                transform: translateX(-100%);
                width: var(--sidebar-width);
            }

            .campus-sidebar.show {
                transform: translateX(0);
            }

            .main-wrapper {
                margin-left: 0;
            }

            .campus-sidebar.collapsed~.main-wrapper {
                margin-left: 0;
            }

            .main-content {
                padding: 1rem;
            }

            .campus-navbar .container-fluid {
                padding: 0 1rem;
            }

            .navbar-brand-campus {
                margin-left: 0.5rem;
            }

            .mobile-backdrop {
                position: fixed;
                top: var(--navbar-height);
                left: 0;
                width: 100%;
                height: calc(100vh - var(--navbar-height));
                background: rgba(0, 0, 0, 0.5);
                z-index: 1035;
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
            }

            .mobile-backdrop.show {
                opacity: 1;
                visibility: visible;
            }
        }

        
        @keyframes slideInLeft {
            from {
                transform: translateX(-100%);
                opacity: 0;
            }

            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

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

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-in {
            animation: fadeIn 0.5s ease-out;
        }

        
        .text-primary-custom {
            color: var(--primary-color) !important;
        }

        .text-secondary-custom {
            color: var(--secondary-color) !important;
        }

        
        .text-accent-custom {
            color: var(--oro-hondo) !important;
        }

        .bg-primary-custom {
            background-color: var(--primary-color) !important;
        }

        .bg-secondary-custom {
            background-color: var(--secondary-color) !important;
        }
    
        
        .cm-borde-urgente  { border-left: 4px solid var(--danger-color); }
        .cm-borde-atencion { border-left: 4px solid var(--warning-color); }
        .cm-borde-bien     { border-left: 4px solid var(--success-color); }

        .cm-semaforos { display: flex; flex-direction: column; gap: .4rem; }
        .cm-linea {
            display: grid;
            grid-template-columns: 5.5rem auto 1fr;
            align-items: center;
            gap: .5rem;
            font-size: var(--t-sm);
        }
        .cm-eje {
            font-size: var(--t-xs); font-weight: 600; letter-spacing: .06em;
            text-transform: uppercase; color: var(--gray-500);
        }
        .cm-estado {
            display: inline-flex; align-items: center; gap: .35rem;
            font-weight: 600; white-space: nowrap;
        }
        .cm-estado::before {
            content: ""; width: .55rem; height: .55rem; border-radius: 50%;
            background: currentColor; flex: none;
        }
        .cm-bien, .cm-texto-bien         { color: var(--success-color); }
        .cm-atencion, .cm-texto-atencion { color: var(--warning-color); }
        .cm-urgente, .cm-texto-urgente   { color: var(--danger-color); }
        .cm-hecho { color: var(--gray-600); }

        @media (max-width: 480px) {
            .cm-linea { grid-template-columns: 4.5rem auto 1fr; gap: .35rem; }
        }