.sample-card {
    background: #1e293b;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    border: 1px solid #334155;
    transition: all 0.3s ease;
}

.sample-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    border-color: #3b82f6;
}

.sample-preview {
    position: relative;
    overflow: hidden;
    height: 160px;
    background: #0f172a;
}

.sample-preview iframe {
    pointer-events: none;
    transform-origin: top left;
}