:root {
    --primary-blue: #0099CC;
    --light-gray: #f4f4f4;
    --blue: #007bff;
    --indigo: #6610f2;
    --purple: #6f42c1;
    --pink: #e83e8c;
    --red: #dc3545;
    --orange: #fd7e14;
    --yellow: #ffc107;
    --green: #28a745;
    --teal: #20c997;
    --cyan: #17a2b8;
    --white: #fff;
    --gray: #6c757d;
    --gray-dark: #343a40;
    --primary: #007bff;
    --secondary: #6c757d;
    --success: #28a745;
    --info: #17a2b8;
    --warning: #ffc107;
    --danger: #dc3545;
    --light: #f8f9fa;
    --dark: #343a40;
    --breakpoint-xs: 0;
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    --font-family-sans-serif: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";
    --font-family-monospace: SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
}

/* Reset and base styles */
*,::after,::before {
    box-sizing: border-box;
}

html {
    font-family: sans-serif;
    line-height: 1.15;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #212529;
    text-align: left;
    background-color: #fff;
}

h1 {
            text-align: center;
            color: #333;
            margin-bottom: 30px;
        }
        
        .day-section {
            background: white;
            margin-bottom: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            overflow: hidden;
        }
        
        .day-header {
            background-color: #2c3e50;
            color: white;
            padding: 15px 20px;
            margin: 0;
            font-size: 24px;
        }
        
        table {
            width: 100%;
            border-collapse: collapse;
        }
        
        th {
            background-color: #34495e;
            color: white;
            padding: 12px;
            text-align: left;
            font-weight: bold;
        }
        
        td {
            padding: 12px;
            border-bottom: 1px solid #ddd;
            vertical-align: top;
        }
        
        .time-col {
            width: 25%;
            font-weight: bold;
            color: #2c3e50;
            background-color: #ecf0f1;
        }
        
        .presenter-col {
            width: 75%;
        }
        
        tr:hover {
            background-color: #f8f9fa;
        }
        
        .break-row {
            background-color: #e8f4f8;
            font-style: italic;
        }
        
        .keynote-row {
            background-color: #fff3cd;
        }
        
        @media only screen and (max-width: 768px) {
            body {
                padding: 10px;
            }
            
            .time-col {
                width: 35%;
            }
            
            .presenter-col {
                width: 65%;
            }
            
            th, td {
                padding: 8px;
                font-size: 14px;
            }
            
            .day-header {
                font-size: 20px;
                padding: 12px 15px;
            }
        }