/**
 * Case Studies Archive Page Styles
 * Modern grid layout with enhanced visual hierarchy
 */

:root {
    --primary-color: #2C3E50;
    --secondary-color: #E74C3C;
    --accent-color: #F39C12;
    --text-primary: #2C3E50;
    --text-secondary: #5A6C7D;
    --background-light: #F8F9FA;
    --background-white: #FFFFFF;
    --border-color: #E1E8ED;
    
    --gradient-primary: linear-gradient(135deg, #2C3E50 0%, #3498DB 100%);
    --gradient-hover: linear-gradient(135deg, #3498DB 0%, #2C3E50 100%);
    --gradient-accent: linear-gradient(135deg, #E74C3C 0%, #F39C12 100%);
}

/* Hero Section */
.case-studies-hero {
    background: var(--gradient-primary);
    padding: 140px 0 80px;
    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 width="1440" height="400" viewBox="0 0 1440 400" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="white" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.case-studies-hero .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.case-studies-hero .hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.case-studies-hero .hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 20px;
    letter-spacing: -1px;
    animation: fadeInUp 0.8s ease-out;
}

.case-studies-hero .hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

/* Archive Section */
.case-studies-archive {
    padding: 80px 0;
    background: var(--background-light);
    min-height: 60vh;
}

.case-studies-archive .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Case Studies Grid */
.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

/* Case Study Card */
.case-study-card {
    background: var(--background-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

.case-study-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.case-study-card .card-inner {
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Card Image */
.case-study-card .card-image {
    position: relative;
    overflow: hidden;
    height: 240px;
    background: var(--gradient-primary);
}

.case-study-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.case-study-card .card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(44, 62, 80, 0.9) 100%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.case-study-card:hover .card-overlay {
    opacity: 1;
}

.card-overlay .view-case {
    color: #ffffff;
    font-weight: 600;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Card Content */
.case-study-card .card-content {
    padding: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Card Meta Tags */
.card-meta {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.industry-tag,
.service-tag {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.industry-tag {
    background: rgba(52, 152, 219, 0.1);
    color: #3498DB;
    border: 1px solid rgba(52, 152, 219, 0.2);
}

.service-tag {
    background: rgba(243, 156, 18, 0.1);
    color: var(--accent-color);
    border: 1px solid rgba(243, 156, 18, 0.2);
}

/* Card Title */
.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.3;
}

.card-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.card-title a:hover {
    color: var(--secondary-color);
}

/* Card Excerpt */
.card-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
    font-size: 15px;
}

/* Result Highlight */
.result-highlight {
    background: linear-gradient(135deg, #E8F5E9 0%, #FFF3E0 100%);
    border-left: 3px solid var(--accent-color);
    padding: 12px 15px;
    margin: 20px 0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.result-icon {
    font-size: 20px;
}

.result-text {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
}

/* Card Link */
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-color);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    margin-top: auto;
}

.card-link:hover {
    gap: 12px;
    color: var(--accent-color);
}

.card-link .arrow {
    transition: transform 0.3s ease;
    display: inline-block;
}

.card-link:hover .arrow {
    transform: translateX(4px);
}

/* Featured Case Study (First Card) */
.case-studies-grid .case-study-card:first-child {
    grid-column: span 2;
}

.case-studies-grid .case-study-card:first-child .card-image {
    height: 320px;
}

/* Pagination */
.case-studies-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 60px;
}

.case-studies-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--background-white);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.case-studies-pagination .page-numbers:hover {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
}

.case-studies-pagination .current {
    background: var(--gradient-primary);
    color: #ffffff;
    border: none;
}

.case-studies-pagination .prev,
.case-studies-pagination .next {
    width: auto;
    padding: 0 20px;
}

/* No Case Studies Message */
.no-case-studies {
    text-align: center;
    padding: 80px 20px;
}

.no-case-studies h3 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.no-case-studies p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

/* CTA Section */
.case-studies-cta {
    background: var(--gradient-accent);
    padding: 80px 0;
}

.case-studies-cta .container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.case-studies-cta .cta-content {
    text-align: center;
}

.case-studies-cta h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: #ffffff;
    margin-bottom: 20px;
    font-weight: 800;
}

.case-studies-cta p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    padding: 15px 35px;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: #ffffff;
    color: var(--secondary-color);
    border: 2px solid #ffffff;
}

.btn-primary:hover {
    background: transparent;
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.btn-secondary:hover {
    background: #ffffff;
    color: var(--secondary-color);
    transform: translateY(-2px);
}

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

/* Category-specific colors */
.case-study-card.category-ai .card-image {
    background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
}

.case-study-card.category-cloud .card-image {
    background: linear-gradient(135deg, #4FACFE 0%, #00F2FE 100%);
}

.case-study-card.category-ecommerce .card-image {
    background: linear-gradient(135deg, #FA709A 0%, #FEE140 100%);
}

.case-study-card.category-healthcare .card-image {
    background: linear-gradient(135deg, #30CFD0 0%, #330867 100%);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .case-studies-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 30px;
    }
    
    .case-studies-grid .case-study-card:first-child {
        grid-column: span 1;
    }
    
    .case-studies-grid .case-study-card:first-child .card-image {
        height: 240px;
    }
}

@media (max-width: 768px) {
    .case-studies-hero {
        padding: 120px 0 60px;
    }
    
    .case-studies-archive {
        padding: 60px 0;
    }
    
    .case-studies-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .case-study-card .card-content {
        padding: 25px;
    }
    
    .card-title {
        font-size: 1.3rem;
    }
    
    .case-studies-cta {
        padding: 60px 0;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cta-buttons .btn {
        width: 100%;
        text-align: center;
    }
}

/* Dark mode support - DISABLED */
/* Dark mode styles disabled to prevent OS dark mode from affecting the site */
/*
@media (prefers-color-scheme: dark) {
    .case-studies-archive {
        background: #1a1a1a;
    }
    
    .case-study-card {
        background: #2a2a2a;
        border-color: #444;
    }
    
    .card-title a {
        color: #ffffff;
    }
    
    .card-excerpt {
        color: rgba(255, 255, 255, 0.7);
    }
    
    .result-highlight {
        background: rgba(255, 255, 255, 0.05);
    }
}
*/

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .case-study-card:hover {
        transform: none;
    }
    
    .case-study-card:hover .card-image img {
        transform: none;
    }
}