.usfcu-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.usfcu-dropzone {
    border: 2px dashed #3498db;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    background: #f8fafc;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
}

.usfcu-dropzone:hover, .usfcu-dropzone.dragover {
    background: #edf2f7;
    border-color: #2980b9;
}

.usfcu-dropzone::before {
    content: '📁';
    font-size: 2rem;
    display: block;
    margin-bottom: 0.5rem;
}

.usfcu-form-group {
    margin-bottom: 1rem;
}

.usfcu-label {
    display: block;
    margin-bottom: 0.5rem;
    color: #2d3748;
    font-weight: 500;
}

.usfcu-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.usfcu-input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52,152,219,0.1);
}

.usfcu-button {
    background: #3498db;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: background 0.2s ease;
}

.usfcu-button:hover {
    background: #2980b9;
}

.usfcu-button:disabled {
    background: #cbd5e0;
    cursor: not-allowed;
}

.usfcu-progress {
    width: 100%;
    height: 8px;
    margin: 1rem 0;
    border-radius: 4px;
    background: #edf2f7;
    display: none;
}

.usfcu-progress::-webkit-progress-bar {
    background: #edf2f7;
    border-radius: 4px;
}

.usfcu-progress::-webkit-progress-value {
    background: #3498db;
    border-radius: 4px;
    transition: width 0.3s ease;
}

.usfcu-status {
    margin: 1rem 0;
    padding: 0.75rem;
    border-radius: 6px;
    text-align: center;
}

.usfcu-download-link {
    margin-top: 1rem;
    text-align: center;
}

.usfcu-download-link a {
    display: inline-block;
    background: #2ecc71;
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.usfcu-download-link a:hover {
    background: #27ae60;
}

/* Responzívny dizajn */
@media (max-width: 768px) {
    .usfcu-container {
        margin: 1rem;
        padding: 1rem;
    }
}

#zipCompressionGroup {
    display: block;  /* Vždy zobrazené pre ZIP */
}

/* Skryjeme len keď je vybraný TAR */
#usfcuFormat[value="tar"] ~ .compression-options {
    display: none;
}

/* Pridáme plynulý prechod */
.compression-options {
    transition: all 0.3s ease;
}

.g-recaptcha {
    margin: 1rem 0;
    display: flex;
    justify-content: center;
}

.mb-3 {
    margin-bottom: 1rem;
}