.case-studies {
    padding: 4px 20px;
    background: #f9f9f9;
    text-align: center;
}

.case-studies h2 {
  font-size: 32px;
  color: #080807;
  margin-bottom: 30px;
}

.case-studies {
    padding: 20px;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;

    max-height: 420px;        /* control visible area */
    overflow-y: auto;         /* vertical scroll */
    padding-right: 10px;
}

/* Optional: smooth scrollbar */
.case-grid::-webkit-scrollbar {
    width: 6px;
}
.case-grid::-webkit-scrollbar-thumb {
    background: #aaa;
    border-radius: 10px;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    max-width: 1390px;
    margin: auto;
}

.case-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.case-card:hover {
    transform: translateY(-5px);
}

.case-card img {
    width: 100%;
    height: 300px;   /* A4-like vertical ratio */
    object-fit: cover;
    cursor: pointer;
}

.case-card p {
    padding: 12px;
    font-weight: 600;
    font-size: 16px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    padding-top: 60px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.85);
}

.modal-content {
    display: block;
    margin: auto;
    max-width: 90%;
    max-height: 90%;
    border-radius: 6px;
}

.close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #fff;
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
}