/* ============================================
   CASE STUDY PAGE STYLES
   Professional AI Project Case Study Template
   ============================================ */

/* Case Study Hero Section */
.case-study-hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    position: relative;
    overflow: hidden;
}

.case-study-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1), transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(16, 185, 129, 0.1), transparent 50%);
    pointer-events: none;
}

.case-study-header {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    margin-bottom: 2rem;
    transition: var(--transition-base);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

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

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

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

.project-icon-wrapper {
    width: 100px;
    height: 100px;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.3);
    position: relative;
}

.project-icon-wrapper::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 24px;
    padding: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.5;
    animation: borderGlow 3s ease-in-out infinite;
}

@keyframes borderGlow {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.8;
    }
}

.project-icon-wrapper i {
    font-size: 3rem;
    color: white;
    z-index: 1;
    position: relative;
}

.case-study-hero .project-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.case-study-hero .project-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.project-links-hero {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Case Study Content */
.case-study-content {
    padding: 4rem 0;
    background: var(--bg-primary);
}

.case-study-content .container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Case Study Section */
.case-study-section {
    margin-bottom: 5rem;
    padding: 2.5rem;
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.case-study-section:hover {
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.section-header i {
    font-size: 1.75rem;
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.section-content {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Overview Text */
.overview-text {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-secondary);
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.info-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.info-value {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* Model Info */
.model-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.model-item {
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.model-item h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.model-item p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tech-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(16, 185, 129, 0.2));
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Tech Stack Grid */
.tech-stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

.tech-stack-item {
    padding: 1.25rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition-base);
}

.tech-stack-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(59, 130, 246, 0.2);
}

.tech-stack-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    display: block;
}

.tech-stack-item span {
    display: block;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.result-item {
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.result-item h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.result-item h3::before {
    content: '';
    width: 4px;
    height: 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.metrics-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.metric-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg-card);
    border-radius: 8px;
    border-left: 3px solid var(--primary-color);
}

.metric-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.metric-value {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.1rem;
}

.highlights-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.highlights-list li {
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.8;
}

.highlights-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 1.1rem;
}

/* Demo Gallery */
.demo-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.demo-image {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.demo-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.demo-image:hover img {
    transform: scale(1.05);
}

.demo-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.1));
}

.demo-image-placeholder i {
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.5;
}

.demo-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .case-study-hero {
        padding: 120px 0 60px;
    }
    
    .case-study-content .container {
        padding: 0 1rem;
    }
    
    .case-study-section {
        padding: 1.5rem;
        margin-bottom: 3rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .info-grid,
    .model-info,
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-stack-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .demo-gallery {
        grid-template-columns: 1fr;
    }
    
    .project-links-hero,
    .demo-actions {
        flex-direction: column;
    }
    
    .project-links-hero .btn,
    .demo-actions .btn {
        width: 100%;
    }
}

/* Dark Mode Adjustments */
[data-theme="dark"] .case-study-section {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

/* Light Mode Adjustments */
[data-theme="light"] .case-study-section {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .info-item,
[data-theme="light"] .model-item,
[data-theme="light"] .result-item,
[data-theme="light"] .tech-stack-item {
    background: rgba(255, 255, 255, 0.5);
}