/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --success-color: #059669;
    --success-light: #d1fae5;
    --success-dark: #065f46;
    --warning-color: #d97706;
    --warning-light: #fef3c7;
    --warning-dark: #92400e;
    --error-color: #dc2626;
    --error-light: #fee2e2;
    --error-dark: #991b1b;
    --info-color: #0284c7;
    
    /* Text colors */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    
    /* Neutrals */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --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);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-900);
    background-color: var(--gray-50);
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* Header */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-color);
}

.logo-icon {
    font-size: var(--font-size-2xl);
}

.nav {
    display: flex;
    gap: var(--spacing-2);
}

.nav-btn {
    padding: var(--spacing-2) var(--spacing-4);
    border: none;
    background: transparent;
    color: var(--gray-600);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 500;
}

.nav-btn:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

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

/* Main Content */
.main {
    padding: var(--spacing-8) 0;
    min-height: calc(100vh - 80px);
}

/* Sections */
.section {
    display: none;
}

.section.active {
    display: block;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.section-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-3);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
}

/* Upload Area */
.upload-area {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-8);
}

.upload-zone {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-12);
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
    margin-bottom: var(--spacing-6);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--primary-color);
    background: var(--primary-color/5);
}

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

.upload-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-4);
}

.upload-zone h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    color: var(--gray-900);
}

.upload-zone p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-2);
}

.upload-hint {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
}

.link-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    text-decoration: underline;
    cursor: pointer;
    font-size: inherit;
    padding: 0;
}

.link-btn:hover {
    color: var(--primary-hover);
}

.upload-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6);
}

/* Form Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.form-group label {
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group select {
    padding: var(--spacing-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-color/10);
}

.form-group small {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

/* Uploaded Files */
.uploaded-files {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-md);
}

.uploaded-files h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    color: var(--gray-900);
}

.files-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

/* Analysis Dashboard - Redesigned */
.analysis-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card.primary {
    border-color: var(--primary-light);
}

.stat-card.success {
    border-color: var(--success-color);
}

.stat-card.warning {
    border-color: var(--warning-color);
}

.stat-card.info {
    border-color: var(--info-color);
}

.stat-icon {
    font-size: 2em;
    opacity: 0.8;
}

.stat-content h4 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    font-weight: 500;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
    margin-top: var(--spacing-1);
}

/* Analysis Card Actions */
.analysis-card-actions {
    margin-top: var(--spacing-4);
}

.btn-block {
    width: 100%;
    display: block;
}

.analysis-progress-container {
    margin: var(--spacing-3) 0;
}

.analysis-message {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-2);
    margin-bottom: 0;
}

/* Legacy Analysis Dashboard */
.analysis-dashboard {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.analysis-status {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-md);
}

/* Analysis Container */
.active-analyses-container {
    margin-top: var(--spacing-6);
}

.analyses-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.no-analyses-message {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    padding: var(--spacing-8);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

/* Enhanced Analysis Cards */
.analyses-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.analysis-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.analysis-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.analysis-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--border-color);
}

.analysis-card.status-completed::before {
    background: var(--success-color);
}

.analysis-card.status-processing::before {
    background: var(--warning-color);
}

.analysis-card.status-error::before {
    background: var(--error-color);
}

.analysis-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-3);
}

.analysis-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.analysis-card-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.analysis-card-badge.completed {
    background: var(--success-light);
    color: var(--success-dark);
}

.analysis-card-badge.processing {
    background: var(--warning-light);
    color: var(--warning-dark);
}

.analysis-card-badge.error {
    background: var(--error-light);
    color: var(--error-dark);
}

.analysis-card-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

.analysis-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.analysis-meta-item strong {
    color: var(--text-primary);
}

/* Markdown Content Styles */
.markdown-content {
    line-height: 1.5;
    color: var(--text-primary);
}

.markdown-content h1 {
    font-size: 1.75em;
    margin-top: 1em;
    margin-bottom: 0.3em;
    color: var(--primary-color);
}

.markdown-content h2 {
    font-size: 1.3em;
    margin-top: 0.8em;
    margin-bottom: 0.3em;
    color: var(--primary-dark);
}

.markdown-content h3 {
    font-size: 1.1em;
    margin-top: 0.6em;
    margin-bottom: 0.3em;
    color: var(--text-primary);
}

.markdown-content p {
    margin-bottom: 0.6em;
}

.markdown-content ul, .markdown-content ol {
    margin-bottom: 0.6em;
    padding-left: 1.5em;
}

.markdown-content li {
    margin-bottom: 0.3em;
}

/* Make section-by-section analysis more compact */
.markdown-content h3 + ul {
    margin-top: 0.3em;
}

.markdown-content br {
    line-height: 0.8;
}

/* Compliance Table Styles */
.compliance-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 0.95em;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border-radius: var(--radius-md);
}

.compliance-table th {
    background-color: var(--primary-color);
    color: white;
    text-align: left;
    padding: 12px 15px;
    font-weight: 600;
}

.compliance-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
}

.compliance-table tr {
    background-color: white;
}

.compliance-table tr:nth-child(even) {
    background-color: #f9fafb;
}

.compliance-table tr:hover {
    background-color: #f3f4f6;
}

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

/* Severity coloring in table */
.compliance-table td:nth-child(4) {
    font-weight: 500;
}

.compliance-table tr td:contains("Major") {
    color: var(--error-color);
}

.compliance-table tr td:contains("Minor") {
    color: var(--warning-color);
}

.status-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    color: var(--gray-900);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-dot.not-started {
    background: var(--gray-400);
}

.status-dot.pending {
    background: var(--warning-color);
}

.status-dot.processing {
    background: var(--info-color);
    animation: pulse 2s infinite;
}

.status-dot.completed {
    background: var(--success-color);
}

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

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

.status-text {
    font-weight: 500;
    color: var(--gray-700);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-4);
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    width: 0%;
    transition: width var(--transition-normal);
}

.status-message {
    color: var(--gray-600);
    margin-bottom: var(--spacing-6);
}

.analysis-controls {
    display: flex;
    gap: var(--spacing-3);
}

.analysis-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.info-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.info-card h4 {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: var(--spacing-2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--spacing-12);
    color: var(--gray-500);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-4);
}

.empty-state h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2);
    color: var(--gray-700);
}

/* Results and History Containers */
.results-container,
.history-container {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    min-height: 400px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    flex-direction: column;
    gap: var(--spacing-4);
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-300);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 32px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.loading-state .loading-spinner {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.loading-text {
    color: var(--white);
    font-size: var(--font-size-lg);
    font-weight: 500;
}

/* Toast Container */
.toast-container {
    position: fixed;
    top: var(--spacing-4);
    right: var(--spacing-4);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: var(--spacing-4);
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .upload-controls {
        grid-template-columns: 1fr;
    }
    
    .analysis-dashboard {
        grid-template-columns: 1fr;
    }
    
    .analysis-controls {
        flex-direction: column;
    }
    
    .container {
        padding: 0 var(--spacing-3);
    }
}

@media (max-width: 480px) {
    .upload-zone {
        padding: var(--spacing-8);
    }
    
    .upload-icon {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: var(--font-size-2xl);
    }
    
    .main {
        padding: var(--spacing-6) 0;
    }
}

/* Multi-Analysis Components */
.active-analyses-container {
    margin-bottom: var(--spacing-6);
}

.analyses-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-4);
}

.analyses-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.no-analyses-message {
    padding: var(--spacing-6);
    text-align: center;
    color: var(--gray-500);
    background: var(--gray-50);
    border-radius: var(--border-radius);
    border: 1px dashed var(--gray-300);
}

.analysis-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: var(--spacing-4);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.2s ease;
}

.analysis-item:hover {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.analysis-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-3);
}

.analysis-info {
    display: flex;
    gap: var(--spacing-4);
    align-items: center;
    flex-wrap: wrap;
}

.analysis-id {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-color);
    background: var(--gray-100);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--spacing-1);
}

.analysis-files,
.analysis-scope {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    background: var(--gray-100);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--spacing-1);
}

.analysis-actions {
    display: flex;
    gap: var(--spacing-2);
}

.analysis-status {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.analysis-item .status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.analysis-item .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.analysis-item .status-dot.pending {
    background-color: var(--warning-color);
}

.analysis-item .status-dot.processing {
    background-color: var(--info-color);
    animation: pulse 2s infinite;
}

.analysis-item .status-dot.completed {
    background-color: var(--success-color);
}

.analysis-item .status-dot.error,
.analysis-item .status-dot.failed {
    background-color: var(--error-color);
}

.analysis-item .status-dot.cancelled {
    background-color: var(--gray-400);
}

.analysis-item .status-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-700);
}

.analysis-item .progress-bar {
    width: 100%;
    height: 6px;
    background-color: var(--gray-200);
    border-radius: 3px;
    overflow: hidden;
}

.analysis-item .progress-fill {
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
    border-radius: 3px;
}

.analysis-item .status-message {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-top: var(--spacing-1);
}

/* Pulse animation for processing status */
@keyframes pulse {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 1;
    }
}

/* Button styles for analysis actions */
.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-sm);
    border-radius: var(--spacing-1);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

/* Responsive adjustments for multi-analysis */
@media (max-width: 768px) {
    .analysis-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-2);
    }
    
    .analysis-info {
        gap: var(--spacing-2);
    }
    
    .analysis-actions {
        width: 100%;
        justify-content: flex-end;
    }
}