/* Case Studies Section - Modern Redesign */
.case-studies-section {
    padding: 60px 5%;
    position: relative;
    z-index: 2;
    max-width: 1400px;
    margin: 0 auto;
    background: transparent;
}

.case-studies-section .section-header {
    text-align: center;
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.case-study-card {
    background: #ffffff;
    border: 1px solid rgba(28, 55, 101, 0.15);
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    cursor: pointer;
    position: relative;
    display: flex;
    flex-direction: column;
}

body.dark-theme .case-study-card {
    background: var(--dark-card);
    border-color: rgba(72, 145, 86, 0.3);
}

.case-study-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.03), rgba(236, 72, 153, 0.03));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
    pointer-events: none;
}

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

.case-study-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 60px rgba(91, 141, 238, 0.2);
}

/* Gradient borders on hover - unique for each card */
.case-study-card:nth-child(1):hover {
    border: 1px solid transparent;
    background: linear-gradient(#ffffff, #ffffff) padding-box,
                linear-gradient(135deg, #3b82f6, #8b5cf6, #ec4899) border-box;
}

.case-study-card:nth-child(2):hover {
    border: 1px solid transparent;
    background: linear-gradient(#ffffff, #ffffff) padding-box,
                linear-gradient(135deg, #10b981, #3b82f6, #8b5cf6) border-box;
}

.case-study-card:nth-child(3):hover {
    border: 1px solid transparent;
    background: linear-gradient(#ffffff, #ffffff) padding-box,
                linear-gradient(135deg, #f59e0b, #ec4899, #8b5cf6) border-box;
}

body.dark-theme .case-study-card:hover {
    box-shadow: 0 20px 60px rgba(72, 145, 86, 0.2);
}

body.dark-theme .case-study-card:nth-child(1):hover {
    border: 1px solid transparent;
    background: linear-gradient(var(--dark-card), var(--dark-card)) padding-box,
                linear-gradient(135deg, #3b82f6, #8b5cf6, #ec4899) border-box;
}

body.dark-theme .case-study-card:nth-child(2):hover {
    border: 1px solid transparent;
    background: linear-gradient(var(--dark-card), var(--dark-card)) padding-box,
                linear-gradient(135deg, #10b981, #3b82f6, #8b5cf6) border-box;
}

body.dark-theme .case-study-card:nth-child(3):hover {
    border: 1px solid transparent;
    background: linear-gradient(var(--dark-card), var(--dark-card)) padding-box,
                linear-gradient(135deg, #f59e0b, #ec4899, #8b5cf6) border-box;
}

/* Modern header with icon and category badge */
.case-study-image {
    width: 100%;
    height: 160px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #e5e7eb 0%, #f3f4f6 100%);
}

body.dark-theme .case-study-image {
    background: linear-gradient(135deg, #1f2937 0%, #374151 100%);
}

/* Colorful gradient backgrounds for each card */
.case-study-card:nth-child(1) .case-study-image {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1), rgba(236, 72, 153, 0.1));
}

.case-study-card:nth-child(2) .case-study-image {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
}

.case-study-card:nth-child(3) .case-study-image {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(236, 72, 153, 0.1), rgba(139, 92, 246, 0.1));
}

body.dark-theme .case-study-card:nth-child(1) .case-study-image {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15), rgba(236, 72, 153, 0.15));
}

body.dark-theme .case-study-card:nth-child(2) .case-study-image {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
}

body.dark-theme .case-study-card:nth-child(3) .case-study-image {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(236, 72, 153, 0.15), rgba(139, 92, 246, 0.15));
}

.case-study-image i {
    font-size: 3.5rem;
    position: relative;
    z-index: 1;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Icon colors matching gradients */
.case-study-card:nth-child(1) .case-study-image i {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.case-study-card:nth-child(2) .case-study-image i {
    background: linear-gradient(135deg, #10b981, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.case-study-card:nth-child(3) .case-study-image i {
    background: linear-gradient(135deg, #f59e0b, #ec4899, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.case-study-card:hover .case-study-image i {
    transform: scale(1.15) translateY(-5px);
}

.case-study-content {
    padding: 1.5rem;
    position: relative;
    z-index: 1;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-study-category {
    display: inline-block;
    padding: 0.4rem 0.9rem;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 1rem;
    width: fit-content;
    transition: all 0.3s ease;
}

/* Category badges with matching gradients */
.case-study-card:nth-child(1) .case-study-category {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
    color: #3b82f6;
}

.case-study-card:nth-child(2) .case-study-category {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(59, 130, 246, 0.15));
    color: #10b981;
}

.case-study-card:nth-child(3) .case-study-category {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(236, 72, 153, 0.15));
    color: #f59e0b;
}

body.dark-theme .case-study-card:nth-child(1) .case-study-category {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
    color: #60a5fa;
}

body.dark-theme .case-study-card:nth-child(2) .case-study-category {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(59, 130, 246, 0.2));
    color: #34d399;
}

body.dark-theme .case-study-card:nth-child(3) .case-study-category {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(236, 72, 153, 0.2));
    color: #fbbf24;
}

.case-study-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--dark-text);
    line-height: 1.3;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-theme .case-study-title {
    color: var(--light-text);
}

/* Gradient title on hover for each card */
.case-study-card:nth-child(1):hover .case-study-title {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.case-study-card:nth-child(2):hover .case-study-title {
    background: linear-gradient(135deg, #10b981, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.case-study-card:nth-child(3):hover .case-study-title {
    background: linear-gradient(135deg, #f59e0b, #ec4899, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.dark-theme .case-study-card:nth-child(1):hover .case-study-title {
    background: linear-gradient(135deg, #60a5fa, #a78bfa, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.dark-theme .case-study-card:nth-child(2):hover .case-study-title {
    background: linear-gradient(135deg, #34d399, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.dark-theme .case-study-card:nth-child(3):hover .case-study-title {
    background: linear-gradient(135deg, #fbbf24, #f472b6, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.case-study-description {
    color: var(--gray-text);
    line-height: 1.6;
    margin-bottom: 1rem;
    flex: 1;
    font-size: 0.9rem;
}

body.dark-theme .case-study-description {
    color: var(--dark-text-light);
}

.case-study-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.case-study-tag {
    padding: 0.5rem 0.9rem;
    background: rgba(0, 0, 0, 0.03);
    color: #6b7280;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.case-study-card:hover .case-study-tag {
    border-color: rgba(0, 0, 0, 0.1);
}

body.dark-theme .case-study-tag {
    background: rgba(255, 255, 255, 0.05);
    color: #9ca3af;
    border-color: rgba(255, 255, 255, 0.1);
}

body.dark-theme .case-study-card:hover .case-study-tag {
    border-color: rgba(255, 255, 255, 0.15);
}

.case-study-link {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    width: fit-content;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-size: 0.9rem;
}

/* Link styles matching gradients */
.case-study-card:nth-child(1) .case-study-link {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    color: #3b82f6;
}

.case-study-card:nth-child(2) .case-study-link {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(59, 130, 246, 0.1));
    color: #10b981;
}

.case-study-card:nth-child(3) .case-study-link {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(236, 72, 153, 0.1));
    color: #f59e0b;
}

.case-study-card:nth-child(1):hover .case-study-link {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6, #ec4899);
    color: white;
}

.case-study-card:nth-child(2):hover .case-study-link {
    background: linear-gradient(135deg, #10b981, #3b82f6, #8b5cf6);
    color: white;
}

.case-study-card:nth-child(3):hover .case-study-link {
    background: linear-gradient(135deg, #f59e0b, #ec4899, #8b5cf6);
    color: white;
}

body.dark-theme .case-study-card:nth-child(1) .case-study-link {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
    color: #60a5fa;
}

body.dark-theme .case-study-card:nth-child(2) .case-study-link {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(59, 130, 246, 0.15));
    color: #34d399;
}

body.dark-theme .case-study-card:nth-child(3) .case-study-link {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(236, 72, 153, 0.15));
    color: #fbbf24;
}

body.dark-theme .case-study-card:nth-child(1):hover .case-study-link {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6, #ec4899);
}

body.dark-theme .case-study-card:nth-child(2):hover .case-study-link {
    background: linear-gradient(135deg, #10b981, #3b82f6, #8b5cf6);
}

body.dark-theme .case-study-card:nth-child(3):hover .case-study-link {
    background: linear-gradient(135deg, #f59e0b, #ec4899, #8b5cf6);
}

.case-study-link:hover {
    gap: 1rem;
    transform: translateX(5px);
}

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

.case-study-link:hover i {
    transform: translateX(5px);
}

/* Responsive */
@media (max-width: 768px) {
    .case-studies-section {
        padding: 60px 5%;
    }

    .case-studies-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .case-study-image {
        height: 200px;
    }

    .case-study-image i {
        font-size: 4rem;
    }

    .case-study-title {
        font-size: 1.3rem;
    }
}