:root {
    /* Primary Colors - Mobile Testing Theme */
    --primary-color: #007bff;
    --primary-light: #4dabf7;
    --primary-dark: #0056b3;
    --secondary-color: #6f42c1;
    --accent-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* AI/Automation Colors */
    --ai-purple: #8b5cf6;
    --ai-blue: #3b82f6;
    --automation-green: #10b981;
    --mobile-orange: #f59e0b;
    
    /* Testing Status Colors */
    --available-green: #059669;
    --development-orange: #d97706;
    --beta-purple: #7c3aed;
    
    /* Neutral Colors */
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --bg-white: #ffffff;
    --bg-light: #f7fafc;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Shadows and Effects */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
    
    /* Layout */
    --container-width: 1200px;
    --content-width: 800px;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

[data-theme="dark"] {
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #a0aec0;
    --bg-white: #1a202c;
    --bg-light: #2d3748;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-light);
}

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: var(--bg-white);
    border: 2px solid var(--primary-color);
    border-radius: 50px;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    font-size: 14px;
    font-weight: 500;
}

.theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--primary-color);
    color: white;
}

.theme-toggle i {
    font-size: 16px;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.hero {
    background: var(--bg-gradient);
    color: white;
    padding: 80px 20px 60px;
    position: relative;
    overflow: hidden;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-icon {
    position: absolute;
    font-size: 24px;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.floating-icon.mobile-icon {
    top: 20%;
    left: 15%;
    animation-delay: 0s;
}

.floating-icon.ai-icon {
    top: 30%;
    right: 20%;
    animation-delay: 2s;
}

.floating-icon.test-icon {
    bottom: 30%;
    left: 25%;
    animation-delay: 4s;
}

.floating-icon.automation-icon {
    bottom: 20%;
    right: 15%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    position: relative;
    z-index: 2;
}

.company-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 25px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 20px;
}

.original-post-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 30px;
    padding: 8px 16px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.original-post-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    background: linear-gradient(135deg, #ffffff 0%, #a8edea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
    line-height: 1.5;
}

.hero-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 30px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    opacity: 0.8;
}

.meta-item i {
    font-size: 16px;
}

.article {
    flex: 1;
    padding: 40px 20px;
    max-width: var(--content-width);
    margin: 0 auto;
    width: 100%;
}

.intro-section {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 40px;
    text-align: center;
}

.ml-features-overview {
    margin-bottom: 60px;
}

.ml-features-overview h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.ml-features-overview h2 i {
    margin-right: 15px;
    color: var(--ai-purple);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-preview {
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-preview:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-preview:hover::before {
    transform: scaleX(1);
}

.feature-preview.vrt::before {
    background: var(--ai-blue);
}

.feature-preview.vsh::before {
    background: var(--ai-purple);
}

.feature-preview.vax::before {
    background: var(--automation-green);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 24px;
    color: white;
}

.feature-preview.vrt .feature-icon {
    background: var(--ai-blue);
}

.feature-preview.vsh .feature-icon {
    background: var(--ai-purple);
}

.feature-preview.vax .feature-icon {
    background: var(--automation-green);
}

.feature-preview h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-preview p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.status-badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.available {
    background: rgba(5, 150, 105, 0.1);
    color: var(--available-green);
    border: 1px solid var(--available-green);
}

.status-badge.development {
    background: rgba(217, 119, 6, 0.1);
    color: var(--development-orange);
    border: 1px solid var(--development-orange);
}

.feature-section {
    margin-bottom: 80px;
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.feature-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 40px;
    display: flex;
    align-items: center;
    gap: 30px;
}

.feature-number {
    font-size: 3rem;
    font-weight: 800;
    opacity: 0.7;
    font-family: var(--font-mono);
}

.feature-title-group h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-tagline {
    font-size: 1.1rem;
    opacity: 0.9;
    font-style: italic;
}

.feature-content {
    padding: 40px;
}

.feature-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.demo-showcase h3,
.self-healing-demo h3,
.explorer-demo h3 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.demo-showcase h3 i,
.self-healing-demo h3 i,
.explorer-demo h3 i {
    color: var(--ai-blue);
}

.comparison-container {
    margin: 30px 0;
}

.image-container {
    position: relative;
    margin-bottom: 20px;
}

.demo-image,
.result-image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
}

.demo-image:hover,
.result-image:hover {
    transform: scale(1.02);
}

.image-label {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.image-label .removed {
    color: #ff6b6b;
    margin-right: 15px;
}

.image-label .added {
    color: #51cf66;
}

.arrow-down {
    text-align: center;
    margin: 30px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--ai-purple);
}

.arrow-down i {
    font-size: 24px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.vrt-explanation {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.explanation-card {
    background: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 25px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.explanation-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.explanation-card.removed-card .card-icon {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
}

.explanation-card.added-card .card-icon {
    background: rgba(40, 167, 69, 0.1);
    color: var(--accent-color);
}

.card-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.card-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.card-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.development-notice {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(217, 119, 6, 0.1);
    color: var(--development-orange);
    padding: 12px 20px;
    border-radius: 25px;
    font-weight: 500;
    margin-bottom: 20px;
    border: 1px solid var(--development-orange);
}

.healing-process {
    position: relative;
    margin: 30px 0;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.target-marker {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.target-marker.original {
    top: 20%;
    left: 20%;
    background: rgba(220, 53, 69, 0.9);
    color: white;
}

.target-marker.healed {
    top: 60%;
    right: 25%;
    background: rgba(40, 167, 69, 0.9);
    color: white;
}

.healing-explanation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 40px;
}

.scenario-card,
.benefits-card {
    background: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 30px;
    border: 1px solid #e2e8f0;
}

.scenario-header,
.benefits-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.scenario-header h4,
.benefits-header h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.scenario-header i {
    color: var(--ai-purple);
}

.benefits-header i {
    color: var(--accent-color);
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 24px;
    height: 24px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
    margin-top: 2px;
}

.step p {
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

.benefits-list {
    list-style: none;
}

.benefits-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.benefits-list li i {
    color: var(--accent-color);
    font-size: 16px;
}

.image-caption {
    text-align: center;
    font-style: italic;
    color: var(--text-muted);
    margin-top: 15px;
    font-size: 0.95rem;
}

.explorer-capabilities {
    margin-top: 40px;
}

.capability-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.capability-card {
    background: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 25px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.capability-card:hover {
    border-color: var(--automation-green);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.capability-icon {
    width: 50px;
    height: 50px;
    background: var(--automation-green);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin: 0 auto 20px;
}

.capability-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.capability-card p {
    color: var(--text-secondary);
    line-height: 1.5;
    font-size: 0.95rem;
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 60px 40px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    margin: 60px 0;
    box-shadow: var(--shadow-lg);
}

.cta-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.cta-content h2 i {
    color: var(--mobile-orange);
}

.cta-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
    line-height: 1.6;
}

.demo-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: white;
    color: var(--primary-color);
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.demo-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--mobile-orange);
    color: white;
}

.demo-button i:first-child {
    font-size: 18px;
}

.demo-button i:last-child {
    transition: transform 0.3s ease;
}

.demo-button:hover i:last-child {
    transform: translateX(3px);
}

.tags-section {
    margin: 60px 0 40px;
}

.tags-section h3 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.tags-section h3 i {
    color: var(--primary-color);
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.tag {
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.tag:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 40px;
    padding: 10px 0;
    transition: all 0.3s ease;
}

.back-link:hover {
    color: var(--primary-dark);
    transform: translateX(-5px);
}

.back-link i {
    transition: transform 0.3s ease;
}

.back-link:hover i {
    transform: translateX(-3px);
}

.footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    border-top: 1px solid #e2e8f0;
    margin-top: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: 60px 20px 40px;
        min-height: 60vh;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-meta {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-header {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .feature-number {
        font-size: 2rem;
    }
    
    .healing-explanation {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .capability-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .vrt-explanation {
        grid-template-columns: 1fr;
    }
    
    .cta-section {
        padding: 40px 20px;
    }
    
    .cta-content h2 {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 10px;
    }
    
    .theme-toggle {
        padding: 8px 16px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 40px 15px 30px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .article {
        padding: 30px 15px;
    }
    
    .feature-content {
        padding: 30px 20px;
    }
    
    .feature-header {
        padding: 30px 20px;
    }
    
    .demo-button {
        padding: 12px 24px;
        font-size: 1rem;
    }
    
    .tags {
        justify-content: center;
    }
    
    .tag {
        font-size: 12px;
        padding: 6px 12px;
    }
}

@media (min-width: 1024px) {
    .article {
        padding: 60px 40px;
    }
    
    .capability-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}