/**
 * Case Study Specific Styles - Enhanced
 * 
 * @package Clevertech_Astra_Child
 * @version 2.0.0
 */

/* ===== Case Study Container ===== */
.single-case-study {
    /* Remove any default spacing */
    margin: 0;
    padding: 0;
}

.single-case-study .ast-container {
    max-width: 100%;
    padding: 0;
}

.case-study-wrapper {
    margin: 0;
    padding: 0;
}

/* ===== Case Study Hero - Enhanced ===== */
.case-study-hero {
    background: var(--gradient-primary);
    color: var(--white);
    padding: calc(var(--space-2xl) + 100px) var(--space-md) var(--space-2xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.case-study-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="1440" height="600" viewBox="0 0 1440 600" fill="none" xmlns="http://www.w3.org/2000/svg"><circle cx="1440" cy="300" r="600" fill="white" fill-opacity="0.03"/><circle cx="0" cy="300" r="400" fill="white" fill-opacity="0.02"/></svg>');
    background-size: cover;
    background-position: center;
}

.case-study-hero > * {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.industry-tag,
.service-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1.25rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    color: var(--white);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-base);
}

.industry-tag:hover,
.service-tag:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.case-study-hero h1 {
    color: var(--white);
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.2;
    margin-bottom: var(--space-xl);
    font-weight: 800;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-lg);
    max-width: 600px;
    margin: 0 auto;
}

.hero-stats .stat {
    text-align: center;
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-value {
    display: block;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.stat-label {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ===== Content Sections - Consistent Spacing ===== */
.case-study-overview,
.implementation-process,
.results-impact,
.testimonial-section,
.key-takeaways,
.next-steps {
    padding: var(--space-2xl) 0;
}

.case-study-overview .container,
.implementation-process .container,
.results-impact .container,
.testimonial-section .container,
.key-takeaways .container,
.next-steps .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== Overview Section - Better Grid ===== */
.overview-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: var(--space-2xl);
    align-items: start;
}

.overview-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: var(--space-lg);
    color: var(--primary-color);
}

.overview-content h3 {
    font-size: 1.5rem;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.overview-content p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

.overview-content ul {
    list-style: none;
    padding: 0;
    margin: var(--space-md) 0;
}

.overview-content ul li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.overview-content ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
    font-size: 1.25rem;
}

/* Sidebar Cards */
.overview-sidebar {
    position: sticky;
    top: 100px;
}

.client-info,
.tech-stack {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-md);
}

.client-info h3,
.tech-stack h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    color: var(--primary-color);
}

.client-stats {
    list-style: none;
    padding: 0;
    margin: 0;
}

.client-stats li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.client-stats li:last-child {
    border-bottom: none;
}

.tech-stack ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-stack ul li {
    background: var(--background-light);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-primary);
}

/* ===== Timeline - Enhanced ===== */
.implementation-process {
    background: var(--background-light);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    text-align: center;
    margin-bottom: var(--space-2xl);
    color: var(--text-primary);
}

.timeline {
    position: relative;
    padding-left: 3rem;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-xl);
    padding-left: var(--space-lg);
}

.timeline-marker {
    position: absolute;
    left: -33px;
    top: 0;
    width: 30px;
    height: 30px;
    background: var(--white);
    border: 3px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--accent-color);
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Results Grid - Better Layout ===== */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.result-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.result-card.primary {
    grid-column: span 2;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
}

.result-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.result-card.primary h3 {
    color: var(--white);
}

.result-value {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--accent-color);
    margin: var(--space-sm) 0;
    display: block;
}

.result-card.primary .result-value {
    color: var(--white);
}

.result-card p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.result-card.primary p {
    color: rgba(255, 255, 255, 0.9);
}

/* ROI Highlight */
.roi-highlight {
    background: var(--gradient-cta);
    color: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.roi-highlight h3 {
    color: var(--white);
    margin-bottom: var(--space-sm);
    font-size: 1.5rem;
}

.roi-highlight p {
    font-size: 1.125rem;
    margin: 0;
}

.roi-highlight strong {
    font-size: 2rem;
    display: inline-block;
    margin: 0 0.5rem;
}

/* ===== Testimonial - Enhanced ===== */
.testimonial-section {
    background: var(--background-light);
}

.testimonial-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.testimonial-content blockquote {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    line-height: 1.8;
    font-style: italic;
    color: var(--text-primary);
    margin: 0 0 var(--space-xl) 0;
    position: relative;
    padding: 0 var(--space-lg);
}

.testimonial-content blockquote::before,
.testimonial-content blockquote::after {
    content: '"';
    font-size: 4rem;
    color: var(--accent-color);
    opacity: 0.3;
    position: absolute;
}

.testimonial-content blockquote::before {
    top: -20px;
    left: 0;
}

.testimonial-content blockquote::after {
    bottom: -40px;
    right: 0;
}

.testimonial-author h4 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
    color: var(--primary-color);
}

.testimonial-author p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ===== Key Takeaways - Grid ===== */
.takeaways-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.takeaway {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.takeaway:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.takeaway h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    color: var(--primary-color);
}

.takeaway p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Next Steps CTA ===== */
.next-steps {
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
}

.next-steps h2 {
    color: var(--white);
    margin-bottom: var(--space-md);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
}

.next-steps p {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ===== Responsive Design ===== */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .overview-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .overview-sidebar {
        position: static;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }
    
    .result-card.primary {
        grid-column: span 1;
    }
    
    .hero-stats {
        max-width: 100%;
    }
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
    /* Hero adjustments */
    .case-study-hero {
        padding: calc(var(--space-xl) + 80px) var(--space-sm) var(--space-xl);
    }
    
    .case-study-hero h1 {
        font-size: 1.75rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    /* Content sections */
    .case-study-overview,
    .implementation-process,
    .results-impact,
    .testimonial-section,
    .key-takeaways,
    .next-steps {
        padding: var(--space-xl) 0;
    }
    
    /* Sidebar */
    .overview-sidebar {
        grid-template-columns: 1fr;
    }
    
    /* Timeline */
    .timeline {
        padding-left: 2rem;
    }
    
    .timeline-marker {
        left: -23px;
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }
    
    .timeline-item {
        padding-left: var(--space-md);
    }
    
    /* Results grid */
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    /* Takeaways */
    .takeaways-grid {
        grid-template-columns: 1fr;
    }
    
    /* CTA buttons */
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
    
    /* Typography */
    .section-title {
        font-size: 2rem;
    }
    
    .overview-content h2 {
        font-size: 1.5rem;
    }
    
    .overview-content h3 {
        font-size: 1.25rem;
    }
    
    .testimonial-content blockquote {
        font-size: 1.25rem;
        padding: 0;
    }
}

/* High Resolution / Large Screens */
@media (min-width: 1440px) {
    .case-study-hero h1 {
        font-size: 4rem;
    }
    
    .overview-grid {
        grid-template-columns: 1fr 420px;
    }
    
    .section-title {
        font-size: 3.5rem;
    }
}

/* Print Styles */
@media print {
    .case-study-hero {
        background: none;
        color: #000;
        padding: 2rem 0;
    }
    
    .hero-stats,
    .cta-buttons,
    .back-to-top {
        display: none;
    }
    
    .result-card {
        break-inside: avoid;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .case-study-hero {
        background: linear-gradient(135deg, #1a1a1a 0%, #2c3e50 100%);
    }
    
    .overview-content p {
        color: rgba(255, 255, 255, 0.8);
    }
    
    .client-info,
    .tech-stack,
    .result-card,
    .takeaway {
        background: #2a2a2a;
        border-color: #444;
        color: #fff;
    }
}