.research-domains-page {
    border-bottom: 1px solid #eee;
    padding-bottom: 25px;
}
.split-container {
    display: flex;
    height: 85vh;
    position: relative;
}

.left-panel {
    width: 40%;
    overflow-y: auto;
    padding: 25px;
    background: #f8f9fa;
    border-right: 1px solid #ddd;
}

.right-panel {
    flex: 1;
    position: relative;
}

#pdfViewer {
    width: 100%;
    height: 100%;
    border: none;
}

/* Divider */
.divider {
    width: 6px;
    background: #dee2e6;
    cursor: col-resize;
    position: relative;
    z-index: 10;
    transition: background 0.2s;
}

.divider:hover {
    background: #0d6efd;
}

/* Prevent text selection while dragging */
.no-select {
    user-select: none;
}

/* Domain Card */
.domain-card {
    transition: all 0.35s ease;
    border-radius: 14px;
    cursor: pointer;
    border: none;
    background: white;
}

/* Hover Effect */
.domain-card:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 18px 35px rgba(0, 0, 0, 0.5) !important;
}

.new-card {
    background: #f8f9fa;
    cursor: default;
}

/* Icon animation */
.domain-card:hover .domain-icon {
    transform: scale(1.2) rotate(6deg);
}

/* Icon */
.domain-icon {
    font-size: 42px;
    margin-bottom: 15px;
    transition: 0.3s ease;
}

/* Title hover color */
.domain-card:hover h6 {
    color: #0d6efd;
    font-weight: 800;
}

.coming-badge {
    font-size: 12px;
    background: #198754;
}