:root {
            --primary-color: #1a5f7a;
            --secondary-color: #f0f7fa;
            --accent-color: #e67e22;
        }
        
        xbody {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 0;
            color: #333;
        }

        header {
            background-color: var(--primary-color);
            color: white;
            padding: 2rem;
            text-align: center;
        }

        .conference-info {
            background-color: var(--secondary-color);
            padding: 1rem;
            text-align: center;
            border-bottom: 3px solid var(--primary-color);
        }

        .container_prog {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
        }

        .day-schedule {
            margin-bottom: 3rem;
        }

        .day-header {
            background-color: var(--primary-color);
            color: white;
            padding: 1rem;
            margin-bottom: 1rem;
            border-radius: 5px;
        }

        .session {
            border-left: 4px solid var(--accent-color);
            margin-bottom: 2rem;
            padding-left: 1rem;
        }
        
		.parallel-sessions {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }

        @media (max-width: 768px) {
            .parallel-sessions {
                grid-template-columns: 1fr;
            }
        }
		
        .time { 
            color: var(--primary-color);
            font-weight: bold;
        }

        .presentation {
            margin: 1rem 0;
            padding: 1rem;
            background-color: var(--secondary-color);
            border-radius: 5px;
        }

        .speaker {
            font-style: italic;
            color: #666;
        }

        .break {
            background-color: #ffeaa7;
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 5px;
            text-align: center;
			font-size: 18px;
			font-weight: bold;
        }

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