: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;
        }

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

        .page-header {
            background: var(--card-bg);
            padding: 40px;
            border-radius: 12px;
            margin-bottom: 30px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            text-align: center;
            border-top: 5px solid var(--primary-color);
        }

        .page-title {
            color: var(--primary-color);
            font-size: 2.5rem;
            margin-bottom: 10px;
        }

        .page-subtitle {
            color: #7f8c8d;
            font-size: 1.1rem;
        }
        
        .action-bar {
            margin-top: 20px;
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-juahoot {
            display: inline-block;
            background-color: #46178f;
            color: white;
            padding: 12px 25px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: bold;
            font-size: 1.1rem;
            box-shadow: 0 4px 0 #25076b;
            transition: transform 0.1s, box-shadow 0.1s;
        }
        
        .btn-juahoot:active {
            transform: translateY(4px);
            box-shadow: 0 0 0 #25076b;
        }

        .search-bar {
            width: 100%;
            max-width: 500px;
            padding: 12px 20px;
            border: 2px solid var(--border-color);
            border-radius: 30px;
            font-size: 1.1rem;
            outline: none;
            transition: border-color 0.3s;
        }

        .search-bar:focus {
            border-color: var(--secondary-color);
        }

        .module-section {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        }

        .section-title {
            color: var(--primary-color);
            font-size: 1.8rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }

        .lesson-list {
            list-style: none;
        }

        .lesson-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px;
            border-bottom: 1px solid var(--border-color);
            transition: background-color 0.2s;
        }

        .lesson-item:last-child {
            border-bottom: none;
        }

        .lesson-item:hover {
            background-color: #f8f9fa;
        }

        .lesson-info {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .lesson-code {
            font-size: 0.9rem;
            color: #7f8c8d;
            font-weight: bold;
            background: #ecf0f1;
            padding: 3px 8px;
            border-radius: 4px;
            align-self: flex-start;
        }

        .lesson-name {
            font-size: 1.1rem;
            color: var(--text-color);
            font-weight: 500;
        }

        .btn-acceder {
            background-color: var(--secondary-color);
            color: white;
            padding: 8px 20px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            transition: background-color 0.3s, transform 0.2s;
            white-space: nowrap;
            margin-left: 15px;
        }

        .btn-acceder:hover {
            background-color: #2980b9;
            transform: translateY(-2px);
        }
        
        .juahoot-item {
            background-color: #f3e5f5;
            border-left: 5px solid #9c27b0;
        }
        .juahoot-item .lesson-name {
            color: #6a1b9a;
            font-weight: bold;
        }
        .btn-juahoot-sm {
            background-color: #9c27b0;
        }
        .btn-juahoot-sm:hover {
            background-color: #7b1fa2;
        }

        @media (max-width: 600px) {
            .lesson-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            .btn-acceder {
                margin-left: 0;
                width: 100%;
                text-align: center;
            }
        }