/* Case Studies Page Styles */

/* Hero Section */
.case-studies-hero {
    padding: 120px 0 80px;
    background: var(--gradient-primary);
    color: white;
    position: relative;
    overflow: hidden;
}

.case-studies-hero::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 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="120" fill="url(%23a)"/></svg>');
    opacity: 0.3;
    animation: float 25s ease-in-out infinite;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.breadcrumb {
    margin-bottom: 2rem;
    font-size: 0.9rem;
    opacity: 0.9;
}

.breadcrumb a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    opacity: 0.8;
}

.breadcrumb-separator {
    margin: 0 0.5rem;
    opacity: 0.7;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.3rem;
    line-height: 1.6;
    opacity: 0.9;
    margin-bottom: 3rem;
}

.hero-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.hero-stat {
    text-align: center;
}

.hero-stat .stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.hero-stat .stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Filter Section */
.case-studies-filter {
    padding: 60px 0 40px;
    background: var(--bg-secondary);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-btn {
    background: white;
    border: 2px solid #e5e7eb;
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Featured Case Study */
.featured-case-study {
    padding: 80px 0;
    background: white;
}

.featured-study-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.study-image {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.study-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: var(--transition);
}

.study-overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    gap: 10px;
}

.study-category {
    background: var(--gradient-primary);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.study-result {
    background: var(--gradient-secondary);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.study-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.study-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.5;
}

.study-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.metric-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

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

.study-preview h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 1.5rem 0 0.5rem;
}

.study-preview p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.read-full-study {
    background: var(--gradient-primary);
    color: white;
    padding: 15px 30px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    margin-top: 1rem;
}

.read-full-study:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Case Studies Grid */
.case-studies-grid {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.case-study-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    position: relative;
}

.case-study-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
}

.card-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.case-study-card:hover .card-image img {
    transform: scale(1.05);
}

.card-overlay {
    position: absolute;
    top: 15px;
    left: 15px;
}

.card-category {
    background: var(--gradient-primary);
    color: white;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.card-content {
    padding: 2rem;
}

.card-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.4;
}

.card-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.card-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.card-metric {
    text-align: center;
}

.metric-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.metric-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Expandable Case Study Details */
.case-study-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 1rem;
}

.case-study-details.expanded {
    max-height: 2000px;
}

.case-study-details h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 2rem 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.case-study-details ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.case-study-details li {
    margin-bottom: 0.5rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.challenge {
    padding: 1.5rem;
    background: #fef2f2;
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
    border-left: 4px solid #ef4444;
}

.solution {
    padding: 1.5rem;
    background: #f0f9ff;
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
    border-left: 4px solid var(--primary-color);
}

.results {
    padding: 1.5rem;
    background: #f0fdf4;
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
    border-left: 4px solid #10b981;
}

.results-timeline {
    margin-top: 1rem;
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(16, 185, 129, 0.2);
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-period {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.9rem;
}

.timeline-result {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: right;
    flex: 1;
    margin-left: 1rem;
}

.client-quote {
    margin: 2rem 0;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-color);
}

.client-quote blockquote {
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.client-quote cite {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.expand-btn {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

.expand-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.expand-btn.expanded {
    background: var(--text-secondary);
}

/* Results Summary */
.results-summary {
    padding: 100px 0;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.summary-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.summary-stat {
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.summary-stat .stat-label {
    display: block;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.summary-stat .stat-description {
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1.4;
}

/* Case Study CTA */
.case-study-cta {
    padding: 100px 0;
    background: var(--bg-secondary);
    text-align: center;
}

.case-study-cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.case-study-cta p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.6;
}

.cta-benefits {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
}

.benefit {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    font-weight: 500;
}

.benefit-icon {
    font-size: 1.2rem;
}

.cta-guarantee {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .featured-study-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .studies-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
    
    .hero-stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .study-metrics {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .card-metrics {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .filter-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 200px;
        text-align: center;
    }
    
    .cta-benefits {
        flex-direction: column;
        align-items: center;
    }
    
    .studies-grid {
        grid-template-columns: 1fr;
    }
    
    .summary-stats {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .case-studies-hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .study-title {
        font-size: 1.8rem;
    }
    
    .card-content {
        padding: 1.5rem;
    }
    
    .summary-stat {
        padding: 1.5rem;
    }
    
    .case-study-cta h2 {
        font-size: 2rem;
    }
}

/* Animation for case study cards */
.case-study-card.hidden {
    display: none;
}

.case-study-card {
    opacity: 0;
    transform: translateY(30px);
    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; }
.case-study-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}