:root {
    --primary-color: #4a90e2;
    --border-color: #ccc;
    --success-color: #2ecc71;
    --error-color: #e74c3c;
}

.upload-container {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    width: 100%;
/*    max-width: 360px;
*/
}

.drop-zone {
    border: 2px dashed var(--primary-color);
    border-radius: 6px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    background: #f9fbfd;
    transition: background 0.3s, border 0.3s;
}

.drop-zone.dragover {
    background: #edf4fe;
    border-color: #2980b9;
}

.file-list {
    margin: 15px 0;
    max-height: 150px;
    overflow-y: auto;
    font-size: 14px;
}

.file-item {
    background: #f1f2f6;
    padding: 8px 12px;
    margin-bottom: 5px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
}

.progress-wrapper {
    width: 100%;
    background-color: #e0e0e0;
    border-radius: 4px;
    margin: 15px 0;
    overflow: hidden;
}

.progress-bar {
    width: 0%;
    height: 20px;
    background-color: var(--success-color);
    text-align: center;
    line-height: 20px;
    color: white;
    font-size: 12px;
    transition: width 0.1s ease;
}

.upload-btn {
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px;
    font-size: 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

.upload-btn:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
}

.status-message {
    margin-top: 15px;
    font-size: 14px;
    text-align: center;
    font-weight: bold;
}