.portfolio-filter-btn {
    border: 1px solid #4f46e5;
    outline: none;
    background: #f8f9fa;
    color: #222;
    font-weight: 500;
    border-radius: 2rem;
    padding: 0.5rem 1.5rem;
    font-size: 1rem;
    transition: all 0.2s;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.04);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.portfolio-filter-btn.active,
.portfolio-filter-btn:hover {
    background: #4f46e5;
    color: #fff;
}

.portfolio-card {
    background: #fff;
    border-radius: 1rem;
    min-height: 340px;
    padding: 1rem;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s cubic-bezier(0.4, 2, 0.6, 1), box-shadow 0.3s;
    overflow: hidden;
    position: relative;
}

.portfolio-card:hover {
    transform: translateY(-8px) scale(1.025);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}

.portfolio-img-wrapper {
    overflow: hidden;
    border-radius: 1rem;
    position: relative;
}

.portfolio-img {
    transition: transform 0.4s cubic-bezier(0.4, 2, 0.6, 1);
    border-radius: 1rem;
}

.portfolio-card:hover .portfolio-img {
    transform: scale(1.06);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.32);
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    z-index: 2;
}

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

/* Responsive Height Adjustments */
@media (max-width: 991.98px) {
    .portfolio-img {
        height: 180px !important;
    }
}

@media (max-width: 767.98px) {
    .portfolio-img {
        height: 140px !important;
    }

    .portfolio-card {
        min-height: 260px;
    }
}