body.xtraktor {
    background: var(--vml-light-gray);
    color: var(--vml-dark-gray);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-md);
}

.xtraktor-shell {
    width: 100%;
    max-width: 960px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.xtraktor-header {
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.brand-logo {
    width: 6rem;
    height: 6rem;
    border-radius: 0.75rem;
    object-fit: contain;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
}

.brand-text {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.brand-title {
    font-size: clamp(2rem, 5vw, 2.6rem);
    letter-spacing: -0.04em;
    color: var(--vml-primary);
}

.brand-subtitle {
    margin-top: 0.25rem;
    color: var(--vml-medium-gray);
}

.header-note {
    font-size: 0.95rem;
    color: var(--vml-dark-gray);
    opacity: 0.8;
}

.xtraktor-main {
    display: grid;
    gap: var(--spacing-md);
}

.panel {
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: 0 18px 30px rgba(0, 0, 0, 0.08);
}

.control-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.control-block {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.control-label {
    font-weight: var(--font-weight-semibold);
    color: var(--vml-primary);
}

.drop-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 2rem 1.5rem;
    border: 2px dashed var(--vml-border);
    border-radius: var(--radius-lg);
    background: #fafbfc;
    cursor: pointer;
    transition: all 0.2s ease;
}

.drop-zone:hover {
    border-color: var(--vml-primary);
    background: #f0f9ff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
}

.drop-zone.drag-over {
    border-color: var(--vml-primary);
    background: #f0f4ff;
    transform: scale(1.02);
}

.drop-hint {
    font-size: 0.9rem;
    color: var(--vml-medium-gray);
    margin: 0;
    pointer-events: none;
}

.upload-button-content {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #ffffff, #f3f4f6);
    border: 1px solid var(--vml-border);
    color: var(--vml-primary);
    font-weight: var(--font-weight-medium);
    pointer-events: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.drop-zone:hover .upload-button-content {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
}

.file-input {
    display: none;
}

.sub-text {
        color: var(--vml-medium-gray);
    font-size: 0.9rem;
}

.file-summary {
    font-size: 0.9rem;
    color: var(--vml-medium-gray);
}

.engine-toggle {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-sm);
}

.engine-option {
    border: 1px solid var(--vml-border);
    border-radius: var(--radius-lg);
    padding: 0.85rem 1rem;
    background: #f7f9fb;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    cursor: pointer;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
    color: var(--vml-dark-gray);
}

.engine-option strong {
    font-weight: var(--font-weight-semibold);
    color: var(--vml-primary);
}

.engine-option span {
    font-size: 0.85rem;
    color: var(--vml-medium-gray);
}

.engine-option:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
}

.engine-option.selected {
    border-color: var(--vml-accent);
    background: #fff8f4;
    box-shadow: 0 12px 20px rgba(255, 107, 53, 0.15);
}

.action-block {
    margin-top: var(--spacing-sm);
}

.primary-action {
    border: none;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--vml-accent), var(--vml-accent-light));
    color: var(--vml-white);
    font-weight: var(--font-weight-semibold);
    padding: 0.95rem 1.75rem;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.primary-action:hover:not([disabled]) {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(255, 107, 53, 0.3);
}

.primary-action[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
}

.panel-progress {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.progress-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--vml-dark-gray);
}

.spinner {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    border: 3px solid #e0e0e0;
    border-top-color: var(--vml-accent);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.progress-bar {
    position: relative;
    height: 8px;
    background: #eef0f4;
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar > #progressFill {
    height: 100%;
    width: 0;
    background: linear-gradient(135deg, var(--vml-accent), var(--vml-accent-light));
    transition: width 0.25s ease;
}

.panel-results {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.panel-results h2 {
    color: var(--vml-primary);
}

.results-note {
    color: var(--vml-medium-gray);
}

.download-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.download-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius-lg);
    background: #f7f9fb;
    border: 1px solid var(--vml-border);
    color: var(--vml-primary);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.download-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 18px rgba(0, 0, 0, 0.1);
}

.download-button.is-disabled {
    pointer-events: none;
    opacity: 0.5;
    box-shadow: none;
    transform: none;
}

.panel-error {
    border-left: 4px solid #f87171;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.panel-error h2 {
    color: #b91c1c;
}

#errorMessage {
    color: var(--vml-dark-gray);
}

.xtraktor-footer {
    text-align: center;
    color: var(--vml-medium-gray);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.is-hidden {
    display: none !important;
}

@media (max-width: 640px) {
    body.xtraktor {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .header-brand {
        flex-direction: column;
        align-items: flex-start;
    }

    .engine-toggle {
        grid-template-columns: 1fr;
    }

    .download-actions {
        flex-direction: column;
    }
}