/* Base Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Source+Sans+Pro:wght@300;400;600;700&family=Roboto:wght@300;400;500;700&display=swap');

/* Reset and Basic Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.page {
    display: none;
    padding-top: 100px;
    min-height: 100vh;
}

.page.active {
    display: block;
}

/* Reading Highlight Styles - Removed blur effect */
.reading-highlight {
    position: relative;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
    transform: scale(1.02) !important;
    z-index: 10 !important;
}

.reading-highlight::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: linear-gradient(45deg, #FF6B6B, #4ECDC4, #667eea, #764ba2);
    border-radius: 35px;
    z-index: -1;
    animation: pulseGradient 2s ease-in-out infinite;
    opacity: 0.3;
}

@keyframes pulseGradient {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.01);
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}