:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-dark: #1f2937;
    
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --radius: 8px;
    --radius-lg: 12px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.header {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo svg {
    color: var(--primary);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-tertiary);
    animation: pulse 2s infinite;
}

.status-badge.connected .status-dot {
    background: var(--success);
}

.status-badge.error .status-dot {
    background: var(--danger);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Cards */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.card h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-light);
}

.tab-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: -2px;
}

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

.tab-button.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Form Elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.input, .select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    transition: all 0.2s;
    font-family: inherit;
}

.input:focus, .select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.code-input {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    resize: vertical;
    transition: all 0.2s;
}

.code-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* File Upload */
.file-upload-area {
    position: relative;
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    transition: all 0.2s;
    background: var(--bg-secondary);
    cursor: pointer;
}

.file-upload-area:hover {
    border-color: var(--primary);
    background: var(--bg-tertiary);
}

.file-upload-area.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.file-input {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

.file-upload-content {
    pointer-events: none;
}

.upload-icon {
    color: var(--primary);
    margin-bottom: 1rem;
}

.upload-text {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.upload-hint {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.file-selected {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9375rem;
}

.file-selected svg {
    color: var(--primary);
    flex-shrink: 0;
}

.file-selected span {
    flex: 1;
    color: var(--text-primary);
    font-weight: 500;
}

.file-remove {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    transition: all 0.2s;
}

.file-remove:hover {
    background: var(--bg-tertiary);
    color: var(--danger);
}

.help-text {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

.btn-primary {
    background: var(--primary);
    color: white;
    width: 100%;
    justify-content: center;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-secondary:hover {
    background: var(--bg-tertiary);
}

.btn-icon {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: var(--radius);
    transition: all 0.2s;
}

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

/* Progress Section */
.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.progress-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.progress-bar-container {
    margin-bottom: 1.5rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
}

.progress-steps {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.progress-step {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    font-size: 0.875rem;
}

.progress-step.active {
    background: rgba(99, 102, 241, 0.1);
    border-left: 3px solid var(--primary);
}

.progress-step.completed {
    color: var(--success);
}

.step-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Results Section */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.results-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.results-actions {
    display: flex;
    gap: 0.75rem;
}

/* Summary Grid */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.summary-card {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
}

.summary-card.critical {
    border-left-color: var(--danger);
}

.summary-card.high {
    border-left-color: var(--warning);
}

.summary-card.medium {
    border-left-color: var(--info);
}

.summary-card.low {
    border-left-color: var(--success);
}

.summary-card-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.summary-card-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Issues */
.issues-container {
    margin-bottom: 2rem;
}

.issues-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.issues-header h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    background: var(--bg-tertiary);
}

.filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.issues-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.issue-card {
    padding: 1.25rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border-left: 4px solid var(--border);
    transition: all 0.2s;
}

.issue-card:hover {
    box-shadow: var(--shadow);
    transform: translateX(4px);
}

.issue-card.critical {
    border-left-color: var(--danger);
}

.issue-card.high {
    border-left-color: var(--warning);
}

.issue-card.medium {
    border-left-color: var(--info);
}

.issue-card.low {
    border-left-color: var(--success);
}

.issue-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 0.75rem;
    gap: 1rem;
}

.issue-title {
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}

.issue-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.issue-badge.critical {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.issue-badge.high {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.issue-badge.medium {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
}

.issue-badge.low {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.issue-message {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.issue-location {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    font-family: monospace;
    margin-bottom: 0.5rem;
}

.issue-suggestion {
    padding: 0.75rem;
    background: var(--bg-primary);
    border-radius: var(--radius);
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-left: 3px solid var(--primary);
}

/* Report Tabs */
.report-container {
    margin-top: 2rem;
}

.report-tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--border-light);
    margin-bottom: 1.5rem;
}

.report-tab {
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: -2px;
}

.report-tab:hover {
    color: var(--text-primary);
}

.report-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.report-panel {
    display: none;
}

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

.code-block {
    background: var(--bg-dark);
    color: #e5e7eb;
    padding: 1.5rem;
    border-radius: var(--radius);
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

.markdown-content {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    line-height: 1.8;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.markdown-content h1 {
    font-size: 2rem;
}

.markdown-content h2 {
    font-size: 1.5rem;
}

.markdown-content h3 {
    font-size: 1.25rem;
}

.markdown-content pre {
    background: var(--bg-dark);
    color: #e5e7eb;
    padding: 1rem;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 1rem 0;
}

.markdown-content code {
    background: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.875em;
}

.markdown-content pre code {
    background: none;
    padding: 0;
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .summary-grid {
        grid-template-columns: 1fr;
    }
    
    .results-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .results-actions {
        width: 100%;
    }
    
    .btn-secondary {
        flex: 1;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* Loading Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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