#drop-area {
    border: 2px dashed #aaa;
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    background: #fff;
    transition: border-color 0.3s ease;
    cursor: pointer;
}

#drop-area.highlight {
    border-color: #0073e6;
}

#drop-area:hover {
    background: #f0f0f0;
}

#drop-area p {
    margin: 1rem 0;
}

.plus-button {
    display: inline-block;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: #0073e6;
    color: white;
    font-size: 36px;
    line-height: 59px;
    text-align: center;
    margin: 1rem auto 0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: background 0.3s;
}

.plus-button:hover {
    background-color: #004795;
}

#file-input {
    display: none;
}

#preview {
    display: flex;
    flex-wrap: wrap;
    margin-top: 1.5rem;
    justify-content: center;
}

#preview img {
    height: 100px;
    margin: 10px;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    object-fit: cover;
}