/* ═══════════════════════════════════════════════════════════
   SPER CASE STUDIES PAGE - MODERN CARD DESIGN
   ═══════════════════════════════════════════════════════════ */

:root {
    --cs-primary: #0056CC;
    --cs-secondary: #003d99;
    --cs-accent: #00d4ff;
    --cs-success: #28a745;
    --cs-dark: #002056;
    --cs-light-bg: #f8f9fa;
    --cs-white: #ffffff;
    --cs-text: #333333;
    --cs-text-muted: #6c757d;
    --cs-border: #e0e0e0;
    --cs-shadow: 0 5px 25px rgba(0, 86, 204, 0.12);
    --cs-shadow-hover: 0 15px 45px rgba(0, 86, 204, 0.25);
    --cs-gradient: linear-gradient(135deg, #0056CC 0%, #003d99 100%);
}

/* ═══ CASE STUDY CARD STYLING ═══ */
.casestudy-card {
    background: var(--cs-white);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--cs-shadow);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 2px solid transparent;
    position: relative;
}

.casestudy-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--cs-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
    z-index: 10;
}

.casestudy-card:hover::before {
    transform: scaleX(1);
}

.casestudy-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--cs-shadow-hover);
    border-color: var(--cs-primary);
}

.casestudy-card-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.casestudy-card-link:hover {
    color: inherit;
}

/* ═══ CASE STUDY CARD IMAGE ═══ */
.casestudy-card-image {
    position: relative;
    overflow: hidden;
    height: 260px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.casestudy-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.casestudy-card:hover .casestudy-card-image img {
    transform: scale(1.15) rotate(2deg);
}

.casestudy-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(0, 34, 86, 0.2) 0%, rgba(0, 34, 86, 0.8) 100%);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: space-between;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.casestudy-card:hover .casestudy-card-overlay {
    opacity: 1;
}

.casestudy-badge {
    background: rgba(255, 255, 255, 0.95);
    padding: 8px 16px;
    border-radius: 25px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--cs-primary);
    font-weight: 700;
    font-size: 0.85rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transform: translateY(-20px);
    transition: transform 0.5s ease;
}

.casestudy-card:hover .casestudy-badge {
    transform: translateY(0);
}

.casestudy-badge i {
    font-size: 1rem;
}

.casestudy-read-more {
    width: 55px;
    height: 55px;
    background: var(--cs-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cs-primary);
    font-size: 1.3rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    align-self: flex-end;
    transform: translateY(20px) scale(0.8);
    opacity: 0;
}

.casestudy-card:hover .casestudy-read-more {
    background: var(--cs-primary);
    color: var(--cs-white);
    transform: translateY(0) scale(1);
    opacity: 1;
}

.casestudy-read-more i {
    transition: transform 0.3s ease;
}

.casestudy-card:hover .casestudy-read-more i {
    transform: translateX(5px);
}

/* ═══ CASE STUDY CARD CONTENT ═══ */
.casestudy-card-content {
    padding: 28px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background: var(--cs-white);
}

.casestudy-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--cs-dark);
    margin-bottom: 15px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
    min-height: 60px;
}

.casestudy-card:hover .casestudy-card-title {
    color: var(--cs-primary);
}

.casestudy-card-excerpt {
    color: var(--cs-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.casestudy-card-footer {
    padding-top: 18px;
    border-top: 2px solid var(--cs-border);
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color 0.3s ease;
}

.casestudy-card:hover .casestudy-card-footer {
    border-color: var(--cs-primary);
}

.casestudy-read-link {
    color: var(--cs-primary);
    font-weight: 700;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

.casestudy-card:hover .casestudy-read-link {
    gap: 8px;
}

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

.casestudy-card:hover .casestudy-read-link i {
    transform: translateX(5px);
}

.casestudy-tags {
    display: flex;
    gap: 8px;
}

.casestudy-tag {
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, var(--cs-primary) 0%, var(--cs-secondary) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cs-white);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.casestudy-card:hover .casestudy-tag {
    transform: rotate(10deg) scale(1.1);
}

/* ═══ HOVER.CSS INTEGRATION ═══ */
.hvr-float {
    display: inline-block;
    vertical-align: middle;
    transform: perspective(1px) translateZ(0);
    box-shadow: 0 0 1px rgba(0, 0, 0, 0);
}

/* ═══ PAGINATION STYLING ═══ */
.pagination {
    margin-top: 50px;
}

.pagination .page-link {
    color: var(--cs-primary);
    border: 2px solid var(--cs-border);
    padding: 12px 20px;
    margin: 0 5px;
    border-radius: 10px;
    font-weight: 700;
    transition: all 0.3s ease;
}

.pagination .page-link:hover {
    background: var(--cs-gradient);
    color: var(--cs-white);
    border-color: var(--cs-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 86, 204, 0.3);
}

.pagination .page-item.active .page-link {
    background: var(--cs-gradient);
    border-color: var(--cs-primary);
    color: var(--cs-white);
    box-shadow: 0 8px 20px rgba(0, 86, 204, 0.35);
}

.pagination .page-item.disabled .page-link {
    color: var(--cs-text-muted);
    background-color: var(--cs-light-bg);
    border-color: var(--cs-border);
}

/* ═══ ANIMATIONS ═══ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.casestudy-card[data-aos="fade-up"] {
    animation: fadeInUp 0.7s ease-out;
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* ═══ RESPONSIVE DESIGN ═══ */
@media (max-width: 992px) {
    .casestudy-card-image {
        height: 240px;
    }

    .casestudy-card-title {
        font-size: 1.25rem;
        min-height: auto;
    }

    .casestudy-card-content {
        padding: 24px;
    }
}

@media (max-width: 768px) {
    .casestudy-card-image {
        height: 220px;
    }

    .casestudy-card-title {
        font-size: 1.2rem;
    }

    .casestudy-card-content {
        padding: 20px;
    }

    .casestudy-card-excerpt {
        font-size: 0.9rem;
        -webkit-line-clamp: 2;
    }

    .pagination .page-link {
        padding: 10px 16px;
        margin: 0 3px;
    }
}

@media (max-width: 576px) {
    .casestudy-card-image {
        height: 200px;
    }

    .casestudy-card-title {
        font-size: 1.1rem;
        -webkit-line-clamp: 3;
    }

    .casestudy-badge {
        font-size: 0.75rem;
        padding: 6px 12px;
    }

    .casestudy-read-more {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
}

/* ═══ LOADING/SKELETON STATE ═══ */
.casestudy-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* ═══ EMPTY STATE ═══ */
.fa-folder-open {
    opacity: 0.3;
}

/* ═══ UTILITY CLASSES ═══ */
.casestudy-success-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--cs-success);
    color: var(--cs-white);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 5;
}

/* ═══ FOCUS STATES FOR ACCESSIBILITY ═══ */
.casestudy-card-link:focus {
    outline: 3px solid var(--cs-primary);
    outline-offset: 5px;
    border-radius: 18px;
}

.casestudy-card-link:focus-visible {
    outline: 3px solid var(--cs-primary);
    outline-offset: 5px;
}

/* ═══ SPECIAL EFFECTS ═══ */
.casestudy-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(0, 86, 204, 0.05) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
    border-radius: 18px;
}

.casestudy-card:hover::after {
    opacity: 1;
}