:root {
    /* Color Variables */
    --bg-primary: #0A0E1A;
    --bg-secondary: #141B2D;
    --bg-tertiary: #1C2333;
    --accent-pink: #E91E63;
    --accent-teal: #00BCD4;
    --accent-purple: #7C4DFF;
    --accent-green: #4CAF50;
    --text-primary: #E8EAF0;
    --text-secondary: #B8BCC8;
    --text-accent: #64B5F6;
    --gradient-1: linear-gradient(135deg, #E91E63 0%, #7C4DFF 100%);
    --gradient-2: linear-gradient(135deg, #00BCD4 0%, #4CAF50 100%);
    --glass: rgba(255, 255, 255, 0.05);
    --shadow-glow: 0 0 40px rgba(124, 77, 255, 0.3);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    position: relative;
}

/* Particle Network Background */
.particle-network {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.3;
}

/* Book Container */
.book-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    z-index: 2;
    perspective: 2000px;
}

/* Page Styles */
.page {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    transform-style: preserve-3d;
    transition: transform 1s cubic-bezier(0.4, 0, 0.2, 1);
    display: none;
}

.page.active {
    display: block;
    transform: rotateY(0deg);
}

.page.flipping-out {
    display: block;
    transform: rotateY(-180deg);
}

.page.flipping-in {
    display: block;
    transform: rotateY(0deg);
}

/* Page 1: Landing Styles */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100vh;
    padding: 0 5%;
    position: relative;
}

.hero-left, .hero-right {
    flex: 1;
    text-align: center;
}

.hero-center {
    flex: 1.5;
    text-align: center;
    z-index: 10;
}

.visual-container {
    position: relative;
    height: 300px;
    margin-bottom: 2rem;
}

.microscope-view, .hospital-door {
    width: 200px;
    height: 200px;
    margin: 0 auto;
    border-radius: 50%;
    background: var(--glass);
    border: 2px solid var(--accent-purple);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.cell-animation, .door-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, var(--accent-pink) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(0.8); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 0.8; }
}

.main-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.title-line {
    display: block;
    letter-spacing: 0.05em;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.cta-button {
    position: relative;
    padding: 1.25rem 3rem;
    font-size: 1.1rem;
    font-weight: 600;
    background: var(--gradient-1);
    border: none;
    border-radius: 50px;
    color: white;
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
}

.button-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
    animation: rotate 3s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Make article content scrollable instead of the whole page */
.page-2 .article-content,
.page-3 .article-content {
    height: calc(100vh - 200px); /* Subtract header height */
    overflow-y: auto;
    overflow-x: hidden;
    padding-bottom: 100px;
}

/* Keep header fixed at top */
.page-2 .article-header,
.page-3 .article-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

/* Article Pages Common Styles */
.article-header {
    position: relative;
    padding: 4rem 5%;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    overflow: hidden;
}

.header-bg-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    background: url('data:image/svg+xml,<svg>...</svg>');
}

.article-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    max-width: 800px;
}

.author-info {
    display: flex;
    gap: 2rem;
    color: var(--text-secondary);
}

.article-content {
    padding: 2rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.article-body {
    padding: 0 3rem;
    max-width: 800px;
    margin: 0 auto;
    height: auto;
    overflow: visible;
}

.lead {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

/* Metrics Sidebar */
.metrics-sidebar {
    position: sticky;
    top: 2rem;
}

.metric-card {
    background: var(--glass);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

.metric-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(124, 77, 255, 0.3);
}

.metric-card h3 {
    font-size: 2.5rem;
    color: var(--accent-purple);
    margin-bottom: 0.5rem;
}

/* Image sections */
.image-section {
    margin: 2rem 0;
    text-align: center;
}

.article-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    margin-bottom: 1rem;
}

.image-caption {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 0.5rem;
}
/* Diagram Container */
.diagram-container {
    margin: 3rem 0;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    overflow: hidden;
    width: 100%;
    max-width: 100%;
}

.diagram-wrapper {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: auto;
    overflow-y: hidden;
}

.diagram-image {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* If you want the container to span full width in a grid */
.article-body .diagram-container {
    margin-left: -3rem;
    margin-right: -3rem;
    max-width: calc(100% + 6rem);
}

/* Responsive handling */
@media (max-width: 768px) {
    .diagram-container {
        margin: 2rem -1rem;
        padding: 1rem;
        border-radius: 0;
    }
    
    .article-body .diagram-container {
        margin-left: -1rem;
        margin-right: -1rem;
        max-width: calc(100% + 2rem);
    }
}
/* Ensure sidebar displays correctly */
.article-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    align-items: start;
}

@media (max-width: 968px) {
    .article-content {
        grid-template-columns: 1fr;
    }
    
    .metrics-sidebar {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        margin-top: 2rem;
    }
}

/* Dashboard Preview */
.dashboard-preview {
    display: flex;
    justify-content: space-around;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--glass);
    border: 1px solid rgba(0, 188, 212, 0.3);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    min-width: 150px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-teal);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Ethics Panel */
.ethics-panel {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: 16px;
    padding: 2rem;
    margin-top: 3rem;
}

.ethics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.ethics-card {
    background: var(--glass);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
}

/* Navigation */
.page-navigation {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-button {
    padding: 0.75rem 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--accent-purple);
    border-radius: 25px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-button:hover {
    background: var(--accent-purple);
    transform: translateY(-2px);
}

.progress-indicator {
    width: 150px;
    height: 4px;
    background: var(--bg-secondary);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--gradient-1);
    transition: width 0.5s ease;
}

.page-indicator {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        flex-direction: column;
        padding: 2rem;
    }
    
    .main-title {
        font-size: 2.5rem;
    }
    
    .article-body {
        grid-template-columns: 1fr;
    }
    
    .metrics-sidebar {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
        position: static;
    }
}
/* Give each page its own subtle theme */
.page-1 {
    background: var(--bg-primary);
    background-image: var(--gradient-mesh);
}

.page-2 {
    background: linear-gradient(180deg, var(--bg-primary) 0%, #0F1319 100%);
    position: relative;
}

/* Add subtle background pattern to page 2 */
.page-2::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.02;
    background-image: 
        radial-gradient(circle at 20% 80%, var(--accent-pink) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, var(--accent-purple) 0%, transparent 50%);
    pointer-events: none;
}

.page-3 {
    background: linear-gradient(180deg, var(--bg-primary) 0%, #0A1014 100%);
}

.page-3::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.02;
    background-image: 
        radial-gradient(circle at 30% 70%, var(--accent-teal) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, var(--accent-green) 0%, transparent 50%);
    pointer-events: none;
}

/* Ensure smooth scrolling within article pages */
.page-2, .page-3 {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch; /* For iOS */
}

/* Custom scrollbar for article pages */
.page-2::-webkit-scrollbar,
.page-3::-webkit-scrollbar {
    width: 8px;
}

.page-2::-webkit-scrollbar-track,
.page-3::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

.page-2::-webkit-scrollbar-thumb {
    background: var(--accent-purple);
    border-radius: 4px;
}

.page-3::-webkit-scrollbar-thumb {
    background: var(--accent-teal);
    border-radius: 4px;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .page-2 .article-content,
    .page-3 .article-content {
        grid-template-columns: 1fr;
    }
    
    .page-2 .metrics-sidebar,
    .page-3 .metrics-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        margin-top: 3rem;
    }
}
/* Fix for Page 3 - single column layout */
.page-3 .article-content {
    display: block; /* Override grid */
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 5%;
}

/* Ensure article-body takes full width on page 3 */
.page-3 .article-body {
    display: block; /* Override grid */
    max-width: 800px; /* Comfortable reading width */
    margin: 0 auto;
}

/* Dashboard preview should be full width */
.page-3 .dashboard-preview {
    max-width: 100%;
    margin: 0 auto 3rem;
}

/* Ethics panel styling */
.page-3 .ethics-panel {
    max-width: 800px;
    margin: 3rem auto;
}