:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-hover: #30363d;
    
    --border-color: #30363d;
    --border-focus: #a855f7;
    
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    
    --accent: #a855f7;
    --accent-hover: #c084fc;
    --success: #3fb950;
    --error: #f85149;
    --warning: #d29922;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Consolas', monospace;
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.tool-nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-icon {
    color: var(--accent);
    font-size: 20px;
}

.brand-text {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
}

.brand-divider {
    color: var(--border-color);
}

.brand-company {
    font-weight: 500;
    font-size: 14px;
    color: var(--text-secondary);
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.status-indicator {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
}

.main-content {
    flex: 1;
    padding: 24px;
}

.tool-container {
    max-width: 1400px;
    margin: 0 auto;
}

.tool-header {
    margin-bottom: 24px;
}

.tool-title {
    font-size: 24px;
    font-weight: 600;
    margin: 0 0 8px 0;
    color: var(--text-primary);
}

.tool-title i {
    color: var(--accent);
    margin-right: 8px;
}

.tool-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

.tool-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 24px;
}

@media (max-width: 1024px) {
    .tool-grid {
        grid-template-columns: 1fr;
    }
}

.main-panel, .side-panel {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.panel-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.panel-tabs {
    display: flex;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.panel-tab {
    flex: 1;
    padding: 12px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.15s ease;
}

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

.panel-tab.active {
    color: var(--accent);
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--accent);
}

.panel-body {
    padding: 20px;
}

.quick-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    border-left: 3px solid var(--accent);
}

.info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-secondary);
}

.info-item i {
    color: var(--accent);
    width: 16px;
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--bg-tertiary);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent);
    background: rgba(168, 85, 247, 0.05);
}

.upload-icon {
    font-size: 40px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.upload-text {
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.upload-hint {
    font-size: 12px;
    color: var(--text-muted);
}

.file-list-container {
    margin-top: 16px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.file-list-header {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.file-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.options-row {
    display: flex;
    gap: 12px;
    margin: 20px 0;
}

.option-toggle {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.option-toggle:hover {
    border-color: var(--accent);
}

.option-toggle.selected {
    background: rgba(168, 85, 247, 0.1);
    border-color: var(--accent);
}

.toggle-check {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: transparent;
    transition: all 0.15s ease;
}

.option-toggle.selected .toggle-check {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.toggle-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.btn-primary-action {
    width: 100%;
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 600;
    color: white;
    background: var(--accent);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.15s ease;
}

.btn-primary-action:hover {
    background: var(--accent-hover);
}

.btn-primary-action:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary-action {
    width: 100%;
    padding: 12px 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
    background: transparent;
    border: 1px solid var(--accent);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.15s ease;
    margin-top: 16px;
}

.btn-secondary-action:hover {
    background: rgba(168, 85, 247, 0.1);
}

.btn-success-action {
    width: 100%;
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 600;
    color: white;
    background: var(--success);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
    margin-top: 16px;
}

.btn-success-action:hover {
    filter: brightness(1.1);
    color: white;
}

.status-box {
    margin-top: 20px;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    display: none;
}

.status-box.visible {
    display: block;
}

.status-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.status-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-message {
    font-size: 13px;
    color: var(--text-secondary);
}

.progress-bar {
    height: 4px;
    background: var(--bg-primary);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-fill.indeterminate {
    width: 30%;
    animation: indeterminate 1.5s infinite ease-in-out;
}

@keyframes indeterminate {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(400%); }
}

.error-box {
    padding: 12px 16px;
    background: rgba(248, 81, 73, 0.1);
    border: 1px solid var(--error);
    border-radius: 6px;
    color: var(--error);
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.names-box {
    padding: 12px;
    background: var(--bg-primary);
    border-radius: 6px;
    margin-bottom: 12px;
}

.names-header {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.names-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.names-list li {
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-primary);
}

.extension-card {
    padding: 20px;
}

.extension-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.extension-header i {
    color: var(--accent);
}

.extension-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0 0 20px 0;
    line-height: 1.5;
}

.install-steps {
    background: var(--bg-tertiary);
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 16px;
}

.install-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.install-list {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
    padding-left: 20px;
    line-height: 1.8;
}

.install-list code {
    font-family: var(--font-mono);
    font-size: 12px;
    background: var(--bg-primary);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent);
}

.install-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
}

.btn-download {
    width: 100%;
    padding: 12px 16px;
    font-size: 13px;
    font-weight: 600;
    color: white;
    background: var(--accent);
    border: none;
    border-radius: 6px;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.15s ease;
}

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

.btn-copy {
    width: 100%;
    padding: 10px 16px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.15s ease;
}

.btn-copy:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.install-note {
    display: flex;
    gap: 10px;
    padding: 12px;
    background: rgba(210, 153, 34, 0.1);
    border: 1px solid var(--warning);
    border-radius: 6px;
    font-size: 12px;
    color: var(--warning);
    line-height: 1.5;
}

.install-note i {
    flex-shrink: 0;
    margin-top: 2px;
}

.loading-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
    font-size: 14px;
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 32px;
    margin-bottom: 12px;
    display: block;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th {
    text-align: left;
    padding: 10px 12px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.data-table tr:hover {
    background: var(--bg-tertiary);
}

.filename-cell {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-primary) !important;
}

.date-cell {
    font-family: var(--font-mono);
    font-size: 11px;
}

.type-badge {
    display: inline-block;
    padding: 3px 8px;
    background: var(--accent);
    color: white;
    font-size: 10px;
    font-weight: 600;
    border-radius: 3px;
    letter-spacing: 0.5px;
}

.btn-table-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    transition: all 0.15s ease;
}

.btn-table-download:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.preview-header {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.preview-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.pages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
}

.groups-container {
    margin-top: 20px;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.groups-header {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.tool-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 16px 24px;
    margin-top: auto;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 12px;
    color: var(--text-muted);
}

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

.d-none {
    display: none !important;
}

.page-thumbnail {
    border: 2px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.15s ease;
}

.page-thumbnail:hover {
    border-color: var(--accent);
}

.page-thumbnail.selected {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(168, 85, 247, 0.3);
}

.page-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
}

.page-thumbnail .card-body {
    padding: 8px;
    background: var(--bg-tertiary);
}

.brutalist-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

/* Collapsible install details */
.install-details {
    margin-top: 16px;
    font-size: 12px;
}

.install-details summary {
    cursor: pointer;
    color: var(--text-muted);
    padding: 8px 0;
}

.install-details summary:hover {
    color: var(--accent);
}

.install-details .install-list {
    margin-top: 12px;
    padding-left: 20px;
}

.install-details .install-list li {
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.install-details code {
    background: var(--bg-primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
}