/* ===== CASE STUDIES PAGE ENHANCED STYLING ===== */

/* Enhanced Case Studies Hero Section */
.case-studies-hero {
    padding: 8rem 0 4rem 0;
    text-align: center;
    background: 
        radial-gradient(circle at 30% 40%, rgba(82, 238, 245, 0.1) 0%, transparent 60%),
        radial-gradient(circle at 70% 60%, rgba(162, 171, 255, 0.08) 0%, transparent 60%),
        rgba(10, 10, 26, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(82, 238, 245, 0.2);
    position: relative;
    overflow: hidden;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-studies-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(135deg, rgba(82, 238, 245, 0.05) 0%, transparent 50%),
        linear-gradient(45deg, transparent 50%, rgba(162, 171, 255, 0.05) 100%);
    pointer-events: none;
    z-index: 1;
}

.case-studies-hero .container {
    position: relative;
    z-index: 2;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

.case-studies-hero h1 {
    font-family: var(--font-headings);
    font-size: 4rem;
    color: #52eef5;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 2rem;
    text-shadow: 0 0 30px rgba(82, 238, 245, 0.6);
    animation: glow 3s ease-in-out infinite alternate;
    line-height: 1.1;
    font-weight: 400;
}

@keyframes glow {
    from { 
        text-shadow: 0 0 20px rgba(82, 238, 245, 0.5);
        transform: scale(1);
    }
    to { 
        text-shadow: 0 0 40px rgba(82, 238, 245, 0.8), 0 0 60px rgba(82, 238, 245, 0.3);
        transform: scale(1.02);
    }
}

.case-studies-hero p {
    font-family: var(--font-body);
    font-size: 1.4rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto 2rem auto;
    line-height: 1.7;
    opacity: 0.9;
    text-align: center;
}

/* Enhanced Filters Section */
.case-studies-filters {
    padding: 2rem 0;
    background: rgba(15, 15, 30, 0.8);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(82, 238, 245, 0.1);
    position: sticky;
    top: 80px;
    z-index: 100;
}

.filter-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.dropdown-filter .dropdown-toggle-filter {
    background: rgba(20, 20, 40, 0.8);
    color: var(--fg);
    padding: 1rem 2rem;
    border: 2px solid rgba(82, 238, 245, 0.3);
    border-radius: 12px;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 200px;
    transition: all 0.3s ease;
    font-family: var(--font-body);
    font-weight: 500;
}

.dropdown-filter .dropdown-toggle-filter:hover {
    border-color: #52eef5;
    background: rgba(82, 238, 245, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(82, 238, 245, 0.2);
}

.dropdown-filter .dropdown-toggle-filter i {
    margin-left: 0.8rem;
    transition: transform 0.3s ease;
}

.dropdown-filter .dropdown-toggle-filter:hover i {
    transform: rotate(180deg);
}

.search-filter {
    display: flex;
    align-items: center;
    background: rgba(20, 20, 40, 0.8);
    padding: 0.5rem 1.5rem;
    border: 2px solid rgba(82, 238, 245, 0.3);
    border-radius: 12px;
    min-width: 300px;
    transition: all 0.3s ease;
}

.search-filter:focus-within {
    border-color: #52eef5;
    background: rgba(82, 238, 245, 0.1);
    box-shadow: 0 8px 25px rgba(82, 238, 245, 0.2);
}

.search-filter i {
    margin-right: 1rem;
    color: #52eef5;
    font-size: 1.2rem;
}

.search-filter input[type="text"] {
    background: transparent;
    border: none;
    color: var(--fg);
    font-size: 1.1rem;
    width: 100%;
    padding: 0.8rem 0;
    outline: none;
    font-family: var(--font-body);
}

.search-filter input[type="text"]::placeholder {
    color: rgba(236, 236, 236, 0.6);
    transition: color 0.3s ease;
}

.search-filter input[type="text"]:focus::placeholder {
    color: rgba(82, 238, 245, 0.8);
}

/* Enhanced Case Studies Grid */
.case-studies-grid-section {
    padding: 4rem 0;
    background: rgba(5, 5, 15, 0.8);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 2rem;
}

.article-card {
    background: rgba(20, 20, 40, 0.7);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(82, 238, 245, 0.2);
    border-radius: 20px;
    padding: 2.5rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(82, 238, 245, 0.1), transparent);
    transition: left 0.6s ease;
}

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

.article-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: rgba(82, 238, 245, 0.5);
    box-shadow: 
        0 20px 60px rgba(82, 238, 245, 0.3),
        0 0 40px rgba(82, 238, 245, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.case-study-img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 1.5rem;
    filter: brightness(1.2) contrast(1.1);
    transition: all 0.3s ease;
}

.article-card:hover .case-study-img {
    transform: scale(1.1) rotate(5deg);
    filter: brightness(1.4) contrast(1.2);
}

.article-card h3 {
    font-family: var(--font-headings);
    font-size: 1.8rem;
    color: #52eef5;
    margin-bottom: 1rem;
    line-height: 1.3;
    font-weight: 400;
    transition: color 0.3s ease;
}

.article-card:hover h3 {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(82, 238, 245, 0.5);
}

.article-card p {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.read-more-link {
    display: inline-flex;
    align-items: center;
    color: #52eef5;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    align-self: flex-start;
    position: relative;
}

.read-more-link::after {
    content: '→';
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

.read-more-link:hover {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(82, 238, 245, 0.8);
}

.read-more-link:hover::after {
    transform: translateX(5px);
}

/* Enhanced CTA Section */
.discuss-project-cta {
    padding: 5rem 0;
    text-align: center;
    background: 
        radial-gradient(circle at 50% 50%, rgba(82, 238, 245, 0.1) 0%, transparent 70%),
        rgba(15, 15, 30, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(82, 238, 245, 0.2);
    position: relative;
    overflow: hidden;
}

.discuss-project-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, rgba(82, 238, 245, 0.05) 0%, transparent 50%),
        linear-gradient(-45deg, transparent 50%, rgba(162, 171, 255, 0.05) 100%);
    pointer-events: none;
}

.discuss-project-cta .container {
    position: relative;
    z-index: 2;
}

.discuss-project-cta h2 {
    font-family: var(--font-headings);
    font-size: 3rem;
    color: #52eef5;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 0 20px rgba(82, 238, 245, 0.5);
}

.btn-discuss-project {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.2rem 3rem;
    background: linear-gradient(135deg, #6d28d9 0%, #9333ea 50%, #a855f7 100%);
    color: #ffffff;
    text-decoration: none;
    border-radius: 12px;
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn-discuss-project::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 0.6s ease;
}

.btn-discuss-project:hover::before {
    left: 100%;
}

.btn-discuss-project:hover {
    transform: translateY(-3px) scale(1.05);
    background: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #c084fc 100%);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 
        0 15px 50px rgba(109, 40, 217, 0.4),
        0 0 30px rgba(168, 85, 247, 0.3);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .case-studies-hero h1 {
        font-size: 3.5rem;
    }
    
    .articles-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .case-studies-hero {
        padding: 6rem 0 3rem 0;
        min-height: 50vh;
    }
    
    .case-studies-hero h1 {
        font-size: 2.5rem;
        letter-spacing: 2px;
        margin-bottom: 1.5rem;
    }
    
    .case-studies-hero p {
        font-size: 1.2rem;
        padding: 0 1rem;
    }
    
    .case-studies-filters {
        position: static;
        padding: 1.5rem 0;
    }
    
    .filter-controls {
        flex-direction: column;
        gap: 1rem;
    }
    
    .dropdown-filter .dropdown-toggle-filter,
    .search-filter {
        width: 100%;
        min-width: auto;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .article-card {
        padding: 2rem;
        margin: 0 1rem;
    }
    
    .discuss-project-cta h2 {
        font-size: 2.2rem;
        margin-bottom: 1.5rem;
    }
    
    .btn-discuss-project {
        padding: 1rem 2rem;
        font-size: 1.1rem;
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .case-studies-hero {
        padding: 5rem 0 2rem 0;
        min-height: 40vh;
    }
    
    .case-studies-hero h1 {
        font-size: 2rem;
        letter-spacing: 1px;
    }
    
    .case-studies-hero p {
        font-size: 1.1rem;
    }
    
    .article-card {
        padding: 1.5rem;
        margin: 0 0.5rem;
    }
    
    .case-study-img {
        width: 60px;
        height: 60px;
    }
    
    .article-card h3 {
        font-size: 1.5rem;
    }
    
    .discuss-project-cta {
        padding: 3rem 0;
    }
    
    .discuss-project-cta h2 {
        font-size: 1.8rem;
    }
}

/* Enhanced focus states for accessibility */
.dropdown-filter .dropdown-toggle-filter:focus,
.search-filter input:focus,
.read-more-link:focus,
.btn-discuss-project:focus {
    outline: 2px solid rgba(82, 238, 245, 0.6);
    outline-offset: 2px;
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}

/* Performance optimizations */
.case-studies-hero,
.article-card,
.discuss-project-cta {
    will-change: transform;
    transform: translateZ(0);
}

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

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

.article-card:nth-child(1) { animation-delay: 0.1s; }
.article-card:nth-child(2) { animation-delay: 0.2s; }
.article-card:nth-child(3) { animation-delay: 0.3s; }
.article-card:nth-child(4) { animation-delay: 0.4s; }
.article-card:nth-child(5) { animation-delay: 0.5s; }
.article-card:nth-child(6) { animation-delay: 0.6s; }