:root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --accent-color: #2ecc71;
            --bg-color: #f4f6f8;
            --text-color: #2c3e50;
            --card-bg: #ffffff;
            --border-color: #dcdde1;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.6;
            padding: 20px;
        }

        .container {
            max-width: 1000px;
            margin: 0 auto;
        }

        /* Cabecera del Módulo */
        .module-header {
            background-color: var(--primary-color);
            color: white;
            padding: 35px 20px;
            border-radius: 8px;
            margin-bottom: 25px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            position: relative;
        }

        .breadcrumbs {
            font-size: 0.85rem;
            color: #3498db;
            margin-bottom: 10px;
            font-weight: bold;
            text-transform: uppercase;
        }
        
        .breadcrumbs a {
            color: #3498db;
            text-decoration: none;
        }

        .breadcrumbs a:hover {
            text-decoration: underline;
        }

        .module-header h1 {
            font-size: 1.8rem;
            margin-bottom: 10px;
        }

        .module-header .code-badge {
            background: rgba(255,255,255,0.15);
            padding: 3px 10px;
            border-radius: 4px;
            font-family: monospace;
            font-size: 0.95rem;
        }

        /* Lista Vertical de Unidades Formativas (UFs) */
        .uf-container {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 30px;
        }

        .uf-card {
            background: var(--card-bg);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            padding: 25px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            align-items: flex-start;
            transition: box-shadow 0.2s;
        }

        @media (min-width: 768px) {
            .uf-card {
                flex-direction: row;
                align-items: center;
            }
        }

        .uf-card:hover {
            box-shadow: 0 4px 8px rgba(0,0,0,0.04);
        }

        .uf-info {
            flex-grow: 1;
            padding-right: 20px;
        }

        .uf-badge {
            font-family: monospace;
            font-weight: bold;
            color: var(--secondary-color);
            font-size: 1.1rem;
            display: block;
            margin-bottom: 5px;
        }

        .uf-title {
            font-size: 1.3rem;
            color: var(--primary-color);
            margin-bottom: 10px;
        }

        .uf-desc {
            color: #636e72;
            font-size: 0.95rem;
        }

        /* Estado Activo / Destacado para la UF0888 */
        .uf-active {
            border-left: 5px solid var(--accent-color);
        }

        /* Botones de acción */
        .btn-uf {
            background-color: #95a5a6;
            color: white;
            text-decoration: none;
            padding: 12px 24px;
            border-radius: 4px;
            font-weight: bold;
            font-size: 0.95rem;
            white-space: nowrap;
            margin-top: 15px;
            transition: background 0.2s;
            width: 100%;
            text-align: center;
        }

        @media (min-width: 768px) {
            .btn-uf {
                width: auto;
                margin-top: 0;
            }
        }

        .btn-uf-active {
            background-color: var(--accent-color);
        }

        .btn-uf-active:hover {
            background-color: #27ae60;
        }

        /* Botón de retorno inferior */
        .back-nav {
            margin-top: 20px;
        }

        .btn-back {
            display: inline-block;
            color: var(--primary-color);
            text-decoration: none;
            font-weight: bold;
            font-size: 0.95rem;
            transition: color 0.2s;
        }

        .btn-back:hover {
            color: var(--secondary-color);
        }

        /* Footer */
        footer {
            text-align: center;
            margin-top: 40px;
            padding: 20px;
            color: #7f8c8d;
            font-size: 0.9rem;
            border-top: 1px solid var(--border-color);
        }