/* Drag & Drop */
.r3d-drag-over { border: 2px dashed #2196F3 !important; background: rgba(33,150,243,0.1); }
.r3d-admin-drop-zone { cursor: pointer; }

/* Buttons under dropzone */
.r3d-actions-wrap { display: flex; gap: 15px; margin-top: 20px; justify-content: center; }
.r3d-btn { padding: 12px 24px; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: 0.3s; flex: 1; min-width: 200px; }
.r3d-btn-view { background-color: #f0f0f1; color: #2271b1; border: 1px solid #2271b1; }
.r3d-btn-upload { background-color: #2196F3; color: #fff; border: 2px solid #2196F3; }
.r3d-btn-upload:hover { background-color: #1976D2; }

/* Modal */
#r3d-custom-modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 999999;
}

.r3d-modal-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.85);
    backdrop-filter: blur(5px);
}

.r3d-modal-content {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 85%;
    height: 85%;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.r3d-modal-close {
    position: absolute;
    top: 10px; right: 20px;
    font-size: 30px;
    color: #fff;
    cursor: pointer;
    z-index: 100;
    line-height: 1;
    text-shadow: 0 2px 5px rgba(0,0,0,0.5);
}
.r3d-modal-close:hover { color: #ff5252; }

#r3d-preview-container {
    flex-grow: 1;
    width: 100%;
    background: #333;
    position: relative;
}

.r3d-modal-footer {
    height: 70px;
    background: #f9f9f9;
    border-top: 1px solid #ddd;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
}

.r3d-file-info {
    font-size: 14px; color: #555; max-width: 60%; 
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.r3d-modal-upload-btn {
    background-color: #4CAF50; 
    border-color: #4CAF50;
    flex: 0 0 auto;
    min-width: auto;
}
.r3d-modal-upload-btn:hover { background-color: #43A047; }

@media (max-width: 768px) {
    .r3d-modal-content { width: 95%; height: 90%; }
    .r3d-modal-footer { flex-direction: column; height: auto; padding: 15px; gap: 10px; }
    .r3d-modal-upload-btn { width: 100%; }
}