/**
 * Fractal Nexus Case Studies Platform Styles
 * Showcasing R 1.8-3.5 Billion Valuation with Professional Presentation
 */

.case-studies-platform {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    padding: 4rem 2rem;
    position: relative;
    overflow: hidden;
}

.case-studies-platform::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="success" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(76,175,80,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23success)"/></svg>');
    opacity: 0.2;
    z-index: 0;
}

.case-studies-platform > * {
    position: relative;
    z-index: 1;
}

/* Case Studies Header */
.case-studies-header {
    text-align: center;
    margin-bottom: 3rem;
}

.case-studies-header h2 {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(45deg, #4caf50, #ff9800, #00bcd4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    animation: successGradient 4s ease-in-out infinite;
}

@keyframes successGradient {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.case-studies-header p {
    font-size: 1.2rem;
    color: #b0b0b0;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Case Studies Stats */
.case-studies-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.case-studies-stats .stat-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(76, 175, 80, 0.3);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.case-studies-stats .stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(76, 175, 80, 0.2), transparent);
    transition: left 0.5s ease;
}

.case-studies-stats .stat-item:hover::before {
    left: 100%;
}

.case-studies-stats .stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(76, 175, 80, 0.3);
    border-color: #4caf50;
}

.case-studies-stats .stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: #4caf50;
    margin-bottom: 0.5rem;
    font-family: 'Montserrat', sans-serif;
}

.case-studies-stats .stat-label {
    font-size: 1rem;
    color: #b0b0b0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Case Studies Filters */
.case-studies-filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Case Studies Grid */
.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.case-study-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
    opacity: 0;
    transform: translateY(30px);
}

.case-study-card.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

.case-study-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #4caf50, #ff9800, #00bcd4);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.case-study-card:hover::before {
    transform: scaleX(1);
}

.case-study-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    border-color: rgba(76, 175, 80, 0.5);
}

.case-study-card.featured {
    border-color: rgba(255, 193, 7, 0.5);
    background: rgba(255, 193, 7, 0.05);
}

.case-study-card.featured::before {
    background: linear-gradient(90deg, #ffc107, #ff9800);
}

/* Case Study Image */
.case-study-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.case-study-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-study-card:hover .case-study-image img {
    transform: scale(1.1);
}

.featured-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: linear-gradient(45deg, #ffc107, #ff9800);
    color: #000;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
}

/* Case Study Content */
.case-study-content {
    padding: 2rem;
}

.case-study-header {
    margin-bottom: 1.5rem;
}

.case-study-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #e0e0e0;
    margin-bottom: 0.5rem;
}

.case-study-subtitle {
    color: #4caf50;
    font-size: 1rem;
    font-weight: 500;
}

/* Case Study Meta */
.case-study-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.case-study-meta span {
    background: rgba(255, 255, 255, 0.1);
    color: #b0b0b0;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Case Study Technologies */
.case-study-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.case-study-technologies .tech-tag {
    background: rgba(76, 175, 80, 0.2);
    color: #e0e0e0;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(76, 175, 80, 0.3);
    transition: all 0.3s ease;
}

.case-study-technologies .tech-tag:hover {
    background: rgba(76, 175, 80, 0.3);
    transform: translateY(-2px);
}

/* Case Study Sections */
.case-study-challenge,
.case-study-solution,
.case-study-results,
.case-study-impact,
.case-study-testimonials {
    margin-bottom: 1.5rem;
}

.case-study-challenge h4,
.case-study-solution h4,
.case-study-results h4,
.case-study-impact h4,
.case-study-testimonials h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #e0e0e0;
    margin-bottom: 0.75rem;
}

.case-study-challenge p,
.case-study-solution p {
    color: #b0b0b0;
    line-height: 1.6;
}

.case-study-results ul {
    list-style: none;
    padding: 0;
}

.case-study-results li {
    color: #b0b0b0;
    padding: 0.25rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.case-study-results li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4caf50;
    font-weight: bold;
}

/* Impact Grid */
.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.impact-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1rem;
    text-align: center;
}

.impact-label {
    display: block;
    font-size: 0.9rem;
    color: #b0b0b0;
    margin-bottom: 0.5rem;
}

.impact-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    color: #4caf50;
}

/* Testimonials */
.case-study-testimonials blockquote {
    background: rgba(255, 255, 255, 0.05);
    border-left: 4px solid #4caf50;
    padding: 1.5rem;
    margin: 0;
    border-radius: 0 10px 10px 0;
}

.case-study-testimonials blockquote cite {
    display: block;
    margin-top: 1rem;
    font-style: normal;
    color: #4caf50;
    font-weight: 500;
}

/* Financial Impact Section */
.financial-impact {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 3rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 3rem;
}

.financial-impact h3 {
    font-size: 2.5rem;
    font-weight: 600;
    color: #e0e0e0;
    text-align: center;
    margin-bottom: 2rem;
}

.impact-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.metric-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(76, 175, 80, 0.1), transparent);
    transition: left 0.5s ease;
}

.metric-card:hover::before {
    left: 100%;
}

.metric-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(76, 175, 80, 0.3);
}

.metric-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.metric-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #e0e0e0;
    margin-bottom: 1rem;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: #4caf50;
    margin-bottom: 0.5rem;
    font-family: 'Montserrat', sans-serif;
}

.metric-content p {
    color: #b0b0b0;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .case-studies-platform {
        padding: 2rem 1rem;
    }
    
    .case-studies-header h2 {
        font-size: 2rem;
    }
    
    .case-studies-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .case-studies-stats .stat-number {
        font-size: 2rem;
    }
    
    .case-studies-filters {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .case-studies-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .case-study-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .impact-metrics {
        grid-template-columns: 1fr;
    }
    
    .financial-impact {
        padding: 2rem 1rem;
    }
    
    .financial-impact h3 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .case-studies-stats {
        grid-template-columns: 1fr;
    }
    
    .case-study-content {
        padding: 1.5rem;
    }
    
    .impact-grid {
        grid-template-columns: 1fr;
    }
}

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

.case-study-card {
    animation: fadeInUp 0.6s ease forwards;
}

.case-study-card:nth-child(1) { animation-delay: 0.1s; }
.case-study-card:nth-child(2) { animation-delay: 0.2s; }
.case-study-card:nth-child(3) { animation-delay: 0.3s; }
.case-study-card:nth-child(4) { animation-delay: 0.4s; }
.case-study-card:nth-child(5) { animation-delay: 0.5s; }

/* Scroll Animations */
@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.metric-card:nth-child(odd) {
    animation: slideInFromLeft 0.8s ease forwards;
}

.metric-card:nth-child(even) {
    animation: slideInFromRight 0.8s ease forwards;
}

/* Hover Effects */
.tech-tag {
    position: relative;
    overflow: hidden;
}

.tech-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.tech-tag:hover::before {
    left: 100%;
}

/* Custom Scrollbar */
.case-studies-platform::-webkit-scrollbar {
    width: 8px;
}

.case-studies-platform::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.case-studies-platform::-webkit-scrollbar-thumb {
    background: linear-gradient(45deg, #4caf50, #ff9800);
    border-radius: 4px;
}

.case-studies-platform::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(45deg, #ff9800, #00bcd4);
}