/* Thumbnail Preview Styles */
.thumbnail-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 15px; margin-top: 25px; }

.thumbnail-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 10px;
    overflow: hidden;
    border: 2px solid #e2e8f0;
    background: #f8fafc;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.thumbnail-item img { width: 100%; height: 100%; object-fit: cover; }

.remove-photo {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(229, 62, 62, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    z-index: 10;
}

@media (max-width: 768px) { .form-row { grid-template-columns: 1fr; gap: 15px; } }