ferro-hgvs 0.2.0

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --border: #30363d;
    --accent: #58a6ff;
    --success: #3fb950;
    --warning: #d29922;
    --error: #f85149;
    --card-shadow: 0 3px 6px rgba(0,0,0,0.3);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    margin: 0;
}

/* App Container Layout */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding-bottom: 1rem;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.header-title h1 {
    color: var(--accent);
    font-size: 1.8rem;
    margin-bottom: 0.25rem;
}

.header-title .subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.header-logo img {
    height: 40px;
    opacity: 0.9;
}

.header-logo img:hover {
    opacity: 1;
}

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin: 1.5rem 2rem;
    box-shadow: var(--card-shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-tertiary);
    border-radius: 8px 8px 0 0;
}

.card-header h2 {
    color: var(--accent);
    font-size: 1.1rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* Health Panel */
.health-panel {
    margin-bottom: 0;
}

.health-status {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.tool-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
    border: 1px solid var(--border);
}

.tool-status.available {
    border-color: var(--success);
}

.tool-status.unavailable {
    border-color: var(--error);
    opacity: 0.7;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.status-indicator.healthy {
    background: var(--success);
}

.status-indicator.unhealthy {
    background: var(--error);
}

.status-indicator.degraded {
    background: var(--warning);
}

.refresh-btn {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

.refresh-btn:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Input Section */
.input-mode-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tab-button {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.tab-button:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.tab-button.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.input-mode {
    display: none;
}

.input-mode.active {
    display: block;
}

.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.input-group input[type="text"],
.input-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: 'SF Mono', Monaco, monospace;
}

.input-group input[type="text"]:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.input-group textarea {
    resize: vertical;
    min-height: 120px;
}

.example-variants {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.example-variants span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.example-btn {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    font-family: 'SF Mono', Monaco, monospace;
}

.example-btn:hover {
    background: var(--bg-primary);
    color: var(--accent);
    border-color: var(--accent);
}

/* Tool Selection */
.tool-selection {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.tool-selection label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    display: block;
}

.tool-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.tool-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tool-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

.tool-checkbox label {
    color: var(--text-primary);
    cursor: pointer;
    margin: 0;
}

.tool-checkbox.unavailable label {
    color: var(--text-muted);
    text-decoration: line-through;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: #4193ef;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #2ea043;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Results Section */
.results-section {
    margin-top: 0;
}

.processing-time {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.result-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
}

.result-input {
    font-family: 'SF Mono', Monaco, monospace;
    color: var(--accent);
}

.result-agreement {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.agreement-badge {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.agreement-badge.agree {
    background: var(--success);
    color: white;
}

.agreement-badge.disagree {
    background: var(--warning);
    color: black;
}

.success-count {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.success-count.success-all {
    background: var(--success);
    color: white;
}

.success-count.success-partial {
    background: var(--warning);
    color: black;
}

.success-count.success-none {
    background: var(--error);
    color: white;
}

.normalized-badge {
    background: var(--accent);
    color: white;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-left: 0.5rem;
    text-transform: uppercase;
}

.unchanged-badge {
    background: var(--bg-tertiary);
    color: var(--text-muted);
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.7rem;
    margin-left: 0.5rem;
    text-transform: uppercase;
}

.valid-badge {
    background: var(--success);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.invalid-badge {
    background: var(--error);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.validation-errors {
    background: rgba(248, 81, 73, 0.1);
    border: 1px solid var(--error);
    border-radius: 6px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.validation-errors ul {
    list-style: none;
    padding-left: 0;
    margin: 0.5rem 0 0 0;
}

.validation-errors li {
    color: var(--error);
    padding: 0.25rem 0;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.9rem;
}

.components-breakdown {
    background: var(--bg-secondary);
    border-radius: 6px;
    padding: 1rem;
    margin-top: 1rem;
}

.components-breakdown strong {
    color: var(--text-secondary);
    display: block;
    margin-bottom: 0.75rem;
}

.components-table {
    width: 100%;
    border-collapse: collapse;
}

.components-table td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border);
}

.components-table tr:last-child td {
    border-bottom: none;
}

.components-table td:first-child {
    color: var(--text-muted);
    width: 150px;
}

.components-table td:last-child {
    color: var(--text-primary);
}

.components-table code {
    background: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'SF Mono', Monaco, monospace;
    color: var(--accent);
}

.result-body {
    padding: 1rem;
}

.tool-results {
    display: grid;
    gap: 0.75rem;
}

.tool-result {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 4px;
    border-left: 3px solid var(--border);
}

.tool-result.success {
    border-left-color: var(--success);
}

.tool-result.error {
    border-left-color: var(--error);
}

.tool-name {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 100px;
}

.tool-output {
    font-family: 'SF Mono', Monaco, monospace;
    color: var(--success);
    flex: 1;
}

.tool-error {
    color: var(--error);
    font-size: 0.9rem;
}

.tool-time {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Loading State */
.loading {
    color: var(--text-muted);
    font-style: italic;
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Footer with Service Status */
.footer {
    display: flex;
    flex-direction: column;
    padding: 0.75rem 2rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: auto;
}

.service-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer .status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
}

.footer .status-indicator.healthy {
    background: var(--success);
}

.footer .status-indicator.unhealthy {
    background: var(--error);
}

.footer .status-indicator.partial,
.footer .status-indicator.degraded {
    background: var(--warning);
}

.refresh-status-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    margin-left: 0.5rem;
}

.refresh-status-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.footer-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-info .separator {
    color: var(--border);
}

.footer a {
    color: var(--accent);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Error Mode Selector */
.error-mode-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.error-mode-selector > label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.error-mode-options {
    display: flex;
    gap: 1rem;
}

.error-mode-option {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    color: var(--text-primary);
}

.error-mode-option input[type="radio"] {
    accent-color: var(--accent);
}

.error-mode-help {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: help;
    margin-left: auto;
}

.error-mode-help:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Collapsible Help Section */
.help-section {
    margin: 1.5rem 2rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-secondary);
    overflow: hidden;
}

.help-toggle {
    width: 100%;
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border: none;
    text-align: left;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    transition: background 0.2s;
}

.help-toggle:hover {
    background: var(--bg-primary);
}

.help-toggle .toggle-icon {
    display: inline-block;
    transition: transform 0.2s;
    font-size: 0.8rem;
}

.help-toggle[aria-expanded="true"] .toggle-icon {
    transform: rotate(90deg);
}

.help-content {
    padding: 1.5rem;
    border-top: 1px solid var(--border);
}

/* Help Tabs */
.help-tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.help-tab-btn {
    padding: 0.6rem 1rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: all 0.2s;
}

.help-tab-btn:hover {
    color: var(--accent);
}

.help-tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.help-tab-content {
    line-height: 1.7;
    color: var(--text-primary);
}

.help-tab-content h4 {
    color: var(--accent);
    margin: 1.25rem 0 0.75rem 0;
    font-size: 1.05rem;
}

.help-tab-content h4:first-child {
    margin-top: 0;
}

.help-tab-content h5 {
    color: var(--text-primary);
    margin: 1rem 0 0.5rem 0;
    font-size: 0.95rem;
}

.help-tab-content p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
}

.help-tab-content ul,
.help-tab-content ol {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
    color: var(--text-secondary);
}

.help-tab-content li {
    margin: 0.25rem 0;
}

.help-tab-content dl {
    margin: 0.75rem 0;
}

.help-tab-content dt {
    color: var(--text-primary);
    margin-top: 0.75rem;
}

.help-tab-content dd {
    color: var(--text-secondary);
    margin-left: 1rem;
    margin-top: 0.25rem;
}

.help-tab-content code {
    background: var(--bg-tertiary);
    padding: 0.15rem 0.35rem;
    border-radius: 3px;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.9em;
    color: var(--accent);
}

.help-tab-content pre {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.85rem;
    line-height: 1.5;
    border: 1px solid var(--border);
    margin: 0.75rem 0;
}

.help-tab-content pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

.help-tab-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.75rem 0;
    font-size: 0.9rem;
}

.help-tab-content th,
.help-tab-content td {
    padding: 0.6rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.help-tab-content th {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
}

.help-tab-content td {
    color: var(--text-secondary);
}

/* Support matrix specific styles */
.help-tab-content td:not(:first-child) {
    text-align: center;
}

.help-tab-content th:not(:first-child) {
    text-align: center;
    min-width: 80px;
}

/* Links in help content */
.help-tab-content a {
    color: var(--accent);
    text-decoration: none;
}

.help-tab-content a:hover {
    text-decoration: underline;
}

.help-tab-content dt a {
    font-weight: normal;
    font-size: 0.85em;
    margin-left: 0.5rem;
}

/* Tool checkbox unavailable state */
.tool-checkbox.unavailable {
    opacity: 0.5;
}

.tool-checkbox.unavailable input {
    cursor: not-allowed;
}

.tool-checkbox.unavailable label {
    cursor: not-allowed;
    text-decoration: line-through;
}

/* Tool mode indicator (e.g., api/local for mutalyzer) */
.tool-mode {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 0.25rem;
    font-weight: normal;
}

/* Error hints */
.error-hint {
    margin-top: 0.75rem;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.error-hint code {
    background: var(--bg-secondary);
    padding: 0.125rem 0.25rem;
    border-radius: 3px;
    font-family: monospace;
}

/* Footer layout adjustment */
.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

/* Comprehensive Health Summary */
.health-summary {
    width: 100%;
    margin-top: 0.5rem;
}

.health-summary-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 4px;
    cursor: pointer;
    flex-wrap: wrap;
}

.health-summary-row:hover {
    background: var(--bg-secondary);
}

.tool-health {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

.tool-health.pass {
    background: rgba(59, 185, 80, 0.15);
    color: var(--success);
}

.tool-health.partial {
    background: rgba(210, 153, 34, 0.15);
    color: var(--warning);
}

.tool-health.fail {
    background: rgba(248, 81, 73, 0.15);
    color: var(--error);
}

.tool-health.unavailable {
    background: rgba(110, 118, 129, 0.15);
    color: var(--text-muted);
    opacity: 0.6;
}

.tool-health-icon {
    font-weight: bold;
}

.tool-health-name {
    margin-right: 0.25rem;
}

.tool-health-metrics {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-family: 'SF Mono', SFMono-Regular, Consolas, monospace;
    font-size: 0.8rem;
}

.health-rate {
    font-weight: 600;
}

.coverage-rate {
    font-weight: 500;
    opacity: 0.85;
}

.expand-icon {
    margin-left: auto;
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Health Details (expanded view) */
.health-details {
    margin-top: 0.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 4px;
    border: 1px solid var(--border);
}

.tool-details {
    margin-bottom: 1.5rem;
}

.tool-details:last-child {
    margin-bottom: 0;
}

.tool-details h4 {
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
    font-size: 1rem;
}

.category-results {
    margin-bottom: 1rem;
}

.category-results strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.test-results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.test-results-table tr {
    border-bottom: 1px solid var(--border);
}

.test-results-table tr:last-child {
    border-bottom: none;
}

.test-results-table td {
    padding: 0.4rem 0.5rem;
    vertical-align: top;
}

.test-results-table tr.pass .test-icon {
    color: var(--success);
}

.test-results-table tr.fail .test-icon {
    color: var(--error);
}

.test-icon {
    width: 1.5rem;
    text-align: center;
    font-weight: bold;
}

.test-name {
    min-width: 100px;
    color: var(--text-primary);
}

.test-variant code {
    background: var(--bg-tertiary);
    padding: 0.125rem 0.25rem;
    border-radius: 3px;
    font-size: 0.8rem;
}

.test-error-cell {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.test-error {
    display: inline-block;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Health loading and error states */
.health-loading, .health-error {
    padding: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

.health-error {
    color: var(--error);
}

/* Health matrix table (tools as columns) */
.health-matrix-table {
    width: auto;
    max-width: 100%;
    border-collapse: collapse;
    font-size: 0.75rem;
    table-layout: auto;
    margin: 0 auto;
}

.health-matrix-table th,
.health-matrix-table td {
    padding: 0.25rem 0.5rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
    white-space: nowrap;
}

.health-matrix-table thead th {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
    position: sticky;
    top: 0;
    font-size: 0.7rem;
}

.health-matrix-table th.unavailable {
    color: var(--text-muted);
    opacity: 0.6;
}

.health-matrix-table .category-cell {
    font-weight: 600;
    color: var(--text-secondary);
    vertical-align: top;
    min-width: 80px;
}

.health-matrix-table .test-name-cell {
    color: var(--text-primary);
    min-width: 90px;
}

.health-matrix-table .variant-cell {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.health-matrix-table .variant-cell code {
    background: var(--bg-tertiary);
    padding: 0.1rem 0.2rem;
    border-radius: 3px;
    font-size: 0.65rem;
}

.health-matrix-table .result-cell {
    text-align: center;
    font-weight: bold;
    width: 55px;
    min-width: 55px;
}

.health-matrix-table .result-cell.pass {
    color: var(--success);
}

.health-matrix-table .result-cell.fail {
    color: var(--error);
    cursor: help;
}

.health-matrix-table .result-cell.na {
    color: var(--warning);
    cursor: help;
}

.health-matrix-table .result-cell.unavailable {
    color: var(--text-muted);
    opacity: 0.5;
}

/* Operation Tabs */
.operation-tabs {
    display: flex;
    gap: 0.25rem;
    margin: 1.5rem 2rem 0 2rem;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
}

.op-tab-button {
    padding: 0.75rem 1.25rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s;
}

.op-tab-button:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.op-tab-button.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Operation Panels */
.operation-panel {
    display: none;
}

.operation-panel.active {
    display: block;
}

.operation-panel .card {
    margin-top: 0;
    border-radius: 0 0 8px 8px;
}

.op-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

/* Coordinate System Options */
.convert-options {
    margin: 1rem 0;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.convert-options > label {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
}

.coord-system-options {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.coord-option {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    color: var(--text-primary);
}

.coord-option input[type="radio"] {
    accent-color: var(--accent);
}

/* Checkbox Options */
.checkbox-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 1rem 0;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.checkbox-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

.checkbox-option label {
    color: var(--text-primary);
    cursor: pointer;
}

/* Liftover Options */
.liftover-options {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.build-select {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.build-select label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.build-select select,
.build-select-inline select {
    padding: 0.5rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
}

.build-select select:focus,
.build-select-inline select:focus {
    outline: none;
    border-color: var(--accent);
}

.liftover-options .arrow {
    color: var(--accent);
    font-size: 1.5rem;
    font-weight: bold;
}

.build-select-inline {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 1rem 0;
}

.build-select-inline label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* VCF Mode Tabs */
.vcf-mode-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.vcf-mode {
    display: none;
}

.vcf-mode.active {
    display: block;
}

/* VCF Fields */
.vcf-fields {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.vcf-field {
    margin-bottom: 0;
}

.vcf-field label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.vcf-field input {
    font-family: 'SF Mono', Monaco, monospace;
}

/* Result Badges */
.coord-badge {
    background: var(--bg-tertiary);
    color: var(--accent);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Conversion Results */
.conversion-result,
.protein-result,
.nmd-result,
.chain-region,
.vcf-result,
.effect-result,
.all-conversions {
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 6px;
}

.conversion-result strong,
.protein-result strong,
.nmd-result strong,
.chain-region strong,
.all-conversions strong {
    color: var(--text-secondary);
    margin-right: 0.5rem;
}

.conversion-result code,
.protein-result code,
.chain-region code {
    background: var(--bg-tertiary);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: 'SF Mono', Monaco, monospace;
    color: var(--accent);
}

.all-conversions ul {
    list-style: none;
    margin: 0.5rem 0 0 0;
    padding: 0;
}

.all-conversions li {
    padding: 0.25rem 0;
}

.conversion-error {
    margin-top: 1rem;
    padding: 0.75rem;
    background: rgba(210, 153, 34, 0.1);
    border: 1px solid var(--warning);
    border-radius: 6px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.conversion-error strong {
    color: var(--warning);
}

/* Impact Badges */
.impact-badge {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.impact-high {
    background: var(--error);
    color: white;
}

.impact-moderate {
    background: var(--warning);
    color: black;
}

.impact-low {
    background: var(--accent);
    color: white;
}

.impact-modifier {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .card {
        margin: 1rem;
    }

    .action-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .footer {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
        padding: 1rem;
    }

    .error-mode-selector {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .error-mode-options {
        flex-wrap: wrap;
    }

    .help-section {
        margin: 1rem;
    }

    .help-tabs {
        justify-content: center;
    }

    .help-tab-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }

    .operation-tabs {
        margin: 1rem;
        flex-wrap: wrap;
    }

    .op-tab-button {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
        flex: 1;
        min-width: 70px;
        text-align: center;
    }

    .operation-panel .card {
        margin: 0 1rem 1rem 1rem;
    }

    .coord-system-options {
        flex-direction: column;
    }

    .liftover-options {
        flex-direction: column;
        align-items: stretch;
    }

    .liftover-options .arrow {
        text-align: center;
        transform: rotate(90deg);
    }

    .vcf-fields {
        grid-template-columns: 1fr 1fr;
    }
}