.preview-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}
.img-wrapper {
    width: 120px;
    border: 1px solid #ccc;
    padding: 5px;
    cursor: grab;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}
.preview-img {
    max-width: 100%;
    max-height: 100px;
    margin-bottom: 5px;
}
.caption-input {
    width: 100%;
    font-size: 12px;
    padding: 3px;
}
.delete-btn {
    position: absolute;
    top: 2px;
    right: 2px;
    background: red;
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    cursor: pointer;
}
.pdf-card {
    border: 1px solid #ddd;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
}
.pdf-card .btn {
    margin-top: 10px;
    padding: 10px 20px;
    background: #007bff;
    color: #fff;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}
.pdf-card .btn:hover {
    background: #0056b3;
}
.custom-file-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: #007bff;
    color: #fff;
    font-weight: 500;
    font-size: 14px;
    border-radius: 6px;
    cursor: pointer;
    border: none;
    margin-bottom: 10px;
    transition: background 0.2s;
}
.custom-file-btn svg {
    width: 20px;
    height: 20px;
}
.custom-file-btn:hover {
    background: #0056b3;
}