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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: #e5e7eb;
            min-height: 100vh;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .header {
            background: white;
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            padding: 2rem;
            margin-bottom: 2rem;
        }

        .header h1 {
            font-size: 2rem;
            color: #1f2937;
            margin-bottom: 0.5rem;
        }

        .header p {
            color: #6b7280;
            font-size: 1rem;
        }

        .archivos{
            margin-top: 30px;
        }

        .content {
            background: white;
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            padding: 2rem;
        }

        .content h2 {
            font-size: 1.5rem;
            color: #1f2937;
            margin-bottom: 1.5rem;
        }

        .pdf-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
        }

        .pdf-card {
            border: 1px solid #e5e7eb;
            border-radius: 12px;
            padding: 1.5rem;
            transition: all 0.3s ease;
        }

        .pdf-card:hover {
            box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
            border-color: #818cf8;
        }

        .pdf-card-header {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1rem;
        }

        .pdf-icon {
            background: #fee2e2;
            padding: 0.75rem;
            border-radius: 8px;
            margin-right: 1rem;
            flex-shrink: 0;
        }

        .pdf-icon svg {
            width: 32px;
            height: 32px;
            color: #dc2626;
        }

        .pdf-info h3 {
            font-size: 1.125rem;
            color: #1f2937;
            margin-bottom: 0.25rem;
            font-weight: 600;
        }

        .pdf-info p {
            font-size: 0.875rem;
            color: #6b7280;
        }

        .view-btn {
            width: 100%;
            background: #4f46e5;
            color: white;
            border: none;
            padding: 0.75rem 1rem;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            transition: background 0.3s ease;
        }

        .view-btn:hover {
            background: #4338ca;
        }

        .view-btn svg {
            width: 20px;
            height: 20px;
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.75);
            z-index: 1000;
            padding: 1rem;
        }

        .modal.active {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .modal-content {
            background: white;
            border-radius: 12px;
            width: 100%;
            max-width: 1200px;
            height: 90vh;
            display: flex;
            flex-direction: column;
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
        }

        .modal-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 1.5rem;
            border-bottom: 1px solid #e5e7eb;
            background: #f9fafb;
            border-radius: 12px 12px 0 0;
        }

        .modal-title {
            flex: 1;
        }

        .modal-title h3 {
            font-size: 1.125rem;
            color: #1f2937;
            margin-bottom: 0.25rem;
        }

        .modal-title p {
            font-size: 0.875rem;
            color: #6b7280;
        }

        .close-btn {
            background: transparent;
            border: none;
            color: #6b7280;
            cursor: pointer;
            padding: 0.5rem;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .close-btn:hover {
            background: #e5e7eb;
            color: #1f2937;
        }

        .close-btn svg {
            width: 24px;
            height: 24px;
        }

        .modal-body {
            flex: 1;
            overflow: hidden;
        }

        .modal-body iframe {
            width: 100%;
            height: 100%;
            border: none;
        }

        @media (max-width: 768px) {
            body {
                padding: 1rem;
            }

            .header {
                padding: 1.5rem;
            }

            .header h1 {
                font-size: 1.5rem;
            }

            .content {
                padding: 1.5rem;
            }

            .pdf-grid {
                grid-template-columns: 1fr;
            }
        }