/* ========================================
   CSS Reset and Base Styles
   ======================================== */

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

/* ========================================
   CSS Custom Properties (Design System)
   ======================================== */

:root {
    /* Color System */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;

    --color-secondary: #64748b;
    --color-secondary-dark: #475569;
    --color-secondary-light: #94a3b8;

    --color-success: #059669;
    --color-warning: #d97706;
    --color-error: #dc2626;
    --color-info: #0284c7;

    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-muted: #9ca3af;

    --color-background: #ffffff;
    --color-surface: #f9fafb;
    --color-surface-hover: #f3f4f6;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;

    /* Dark mode colors */
    --color-dark-background: #111827;
    --color-dark-surface: #1f2937;
    --color-dark-surface-hover: #374151;
    --color-dark-text: #f9fafb;
    --color-dark-text-light: #d1d5db;
    --color-dark-border: #374151;

    /* Typography */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

    --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;
    --font-size-4xl: 2.25rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;

    /* 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;
    --spacing-20: 5rem;

    /* Border Radius */
    --radius-sm: 0.125rem;
    --radius-base: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-base: 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);

    /* Layout */
    --sidebar-width: 280px;
    --header-height: 80px;
    --mobile-breakpoint: 768px;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
}

/* ========================================
   Base HTML Elements
   ======================================== */

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-4);
}

h1 {
    font-size: var(--font-size-4xl);
    color: var(--color-text);
}

h2 {
    font-size: var(--font-size-3xl);
    color: var(--color-text);
}

h3 {
    font-size: var(--font-size-2xl);
    color: var(--color-text);
}

h4 {
    font-size: var(--font-size-xl);
    color: var(--color-text);
}

h5 {
    font-size: var(--font-size-lg);
    color: var(--color-text);
}

h6 {
    font-size: var(--font-size-base);
    color: var(--color-text);
}

p {
    margin-bottom: var(--spacing-4);
    color: var(--color-text);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

strong {
    font-weight: var(--font-weight-semibold);
}

code {
    font-family: var(--font-family-mono);
    font-size: 0.9em;
    background-color: var(--color-surface);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    color: var(--color-primary-dark);
}

blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-4);
    margin: var(--spacing-6) 0;
    font-style: italic;
    color: var(--color-text-light);
}

ul, ol {
    margin-bottom: var(--spacing-4);
    padding-left: var(--spacing-6);
}

li {
    margin-bottom: var(--spacing-2);
    color: var(--color-text);
}

/* ========================================
   Layout Components
   ======================================== */

.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
}

/* ========================================
   Sidebar Navigation
   ======================================== */

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--color-surface);
    border-right: 1px solid var(--color-border);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: transform var(--transition-base);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: var(--spacing-6) var(--spacing-5);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h2 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: 0;
}

.mobile-nav-close {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--radius-base);
    transition: background-color var(--transition-fast);
}

.mobile-nav-close:hover {
    background-color: var(--color-surface-hover);
}

.nav-menu {
    flex: 1;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-menu li {
    margin-bottom: 0;
}

.nav-link {
    display: block;
    padding: var(--spacing-3) var(--spacing-5);
    color: var(--color-text-light);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background-color: var(--color-surface-hover);
    color: var(--color-text);
    text-decoration: none;
    border-left-color: var(--color-primary-light);
}

.nav-link.active {
    background-color: var(--color-primary);
    color: white;
    border-left-color: var(--color-primary-dark);
}

.sidebar-footer {
    padding: var(--spacing-5);
    border-top: 1px solid var(--color-border);
}

.export-buttons {
    margin-bottom: var(--spacing-4);
}

.social-links {
    display: flex;
    gap: var(--spacing-3);
}

.social-links a {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ========================================
   Mobile Navigation Toggle
   ======================================== */

.mobile-nav-toggle {
    display: none;
    position: fixed;
    top: var(--spacing-4);
    left: var(--spacing-4);
    z-index: 1100;
    background: var(--color-primary);
    color: white;
    border: none;
    padding: var(--spacing-3);
    border-radius: var(--radius-base);
    font-size: var(--font-size-lg);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.mobile-nav-toggle:hover {
    background: var(--color-primary-dark);
    transform: scale(1.05);
}

/* ========================================
   Main Content Area
   ======================================== */

.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: var(--spacing-8);
    max-width: 100%;
}

/* ========================================
   Report Header
   ======================================== */

.report-header {
    margin-bottom: var(--spacing-12);
    padding-bottom: var(--spacing-8);
    border-bottom: 2px solid var(--color-border);
}

.report-header h1 {
    margin-bottom: var(--spacing-4);
    color: var(--color-text);
}

.report-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    align-items: center;
}

.status {
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-base);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

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

.date, .author {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.report-abstract {
    background-color: var(--color-surface);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
}

.report-abstract p {
    margin-bottom: 0;
    font-size: var(--font-size-lg);
    color: var(--color-text);
    line-height: var(--line-height-relaxed);
}

/* ========================================
   Content Sections
   ======================================== */

.content-section {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

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

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

/* ========================================
   Card Components
   ======================================== */

.card {
    background: var(--color-background);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-base);
    margin-bottom: var(--spacing-8);
    overflow: hidden;
}

.card__header {
    padding: var(--spacing-6);
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.card__header h2 {
    margin-bottom: 0;
    color: var(--color-text);
}

.card__body {
    padding: var(--spacing-8);
}

/* ========================================
   Specialized Content Components
   ======================================== */

.key-finding {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-8);
}

.key-finding h3 {
    color: white;
    margin-bottom: var(--spacing-3);
}

.key-finding p {
    color: white;
    margin-bottom: 0;
}

.problem-statement, .impact-summary {
    margin-bottom: var(--spacing-8);
}

.impact-list {
    list-style: none;
    padding-left: 0;
}

.impact-list li {
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: flex-start;
}

.impact-list li:last-child {
    border-bottom: none;
}

.impact-list strong {
    color: var(--color-primary-dark);
    min-width: 120px;
    margin-right: var(--spacing-3);
}

/* ========================================
   Feature Grid
   ======================================== */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
    margin: var(--spacing-6) 0;
}

.feature-item {
    background: var(--color-surface);
    padding: var(--spacing-5);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.feature-item h4 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-lg);
}

.feature-item p {
    margin-bottom: 0;
    color: var(--color-text-light);
}

/* ========================================
   Process Flow
   ======================================== */

.process-flow {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin: var(--spacing-6) 0;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.step-number {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
}

.step-content h4 {
    margin-bottom: var(--spacing-2);
    color: var(--color-text);
}

.step-content p {
    margin-bottom: 0;
    color: var(--color-text-light);
}

/* ========================================
   Flow Comparison
   ======================================== */

.flow-comparison {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin: var(--spacing-6) 0;
}

.flow-item {
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    border-left: 4px solid;
}

.flow-normal {
    background: rgba(5, 150, 105, 0.1);
    border-left-color: var(--color-success);
}

.flow-bug {
    background: rgba(220, 38, 38, 0.1);
    border-left-color: var(--color-error);
}

.flow-item h4 {
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-base);
}

.flow-item p {
    margin-bottom: 0;
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
}

.highlight-success {
    background: var(--color-success);
    color: white;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
}

.highlight-error {
    background: var(--color-error);
    color: white;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
}

/* ========================================
   Code Blocks
   ======================================== */

.code-block {
    background: var(--color-dark-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin: var(--spacing-4) 0;
}

.code-block pre {
    margin: 0;
    padding: var(--spacing-5);
    overflow-x: auto;
}

.code-block code {
    background: transparent;
    color: #e2e8f0;
    font-size: var(--font-size-sm);
    padding: 0;
}

/* ========================================
   Evidence Sections
   ======================================== */

.evidence-section {
    margin-bottom: var(--spacing-8);
}

.evidence-category {
    margin-bottom: var(--spacing-6);
}

.evidence-category h4 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-3);
}

.evidence-list {
    list-style: none;
    padding-left: 0;
}

.evidence-list li {
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-2);
    background: var(--color-surface);
    border-radius: var(--radius-base);
    border-left: 3px solid var(--color-primary-light);
    font-style: italic;
    color: var(--color-text-light);
}

.quote-block {
    background: var(--color-surface);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    margin: var(--spacing-6) 0;
    position: relative;
}

.quote-block::before {
    content: '"';
    font-size: 4rem;
    color: var(--color-primary);
    position: absolute;
    top: -10px;
    left: var(--spacing-4);
    font-family: Georgia, serif;
}

.quote-block blockquote {
    border: none;
    padding-left: var(--spacing-8);
    margin: 0 0 var(--spacing-4) 0;
    font-size: var(--font-size-lg);
    color: var(--color-text);
}

.quote-block cite {
    display: block;
    text-align: right;
    font-style: normal;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.evidence-analysis {
    background: rgba(37, 99, 235, 0.1);
    padding: var(--spacing-4);
    border-radius: var(--radius-base);
    border-left: 4px solid var(--color-primary);
    margin-top: var(--spacing-4);
    font-weight: var(--font-weight-medium);
}

/* ========================================
   Symptom and Impact Grids
   ======================================== */

.symptom-explanation {
    display: grid;
    gap: var(--spacing-4);
    margin: var(--spacing-6) 0;
}

.symptom-item {
    background: var(--color-surface);
    padding: var(--spacing-5);
    border-radius: var(--radius-md);
    border-top: 3px solid var(--color-primary);
}

.symptom-item h4 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-3);
}

.symptom-item p {
    margin-bottom: 0;
    color: var(--color-text-light);
}

.symptom-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-4);
    margin: var(--spacing-6) 0;
}

.symptom-card {
    background: var(--color-surface);
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    text-align: center;
}

.symptom-card h4 {
    color: var(--color-error);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-base);
}

.symptom-card p {
    margin-bottom: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-5);
    border: none;
    border-radius: var(--radius-base);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

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

.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn--secondary:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-primary);
    color: var(--color-primary);
    text-decoration: none;
}

.btn--small {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-xs);
}

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

/* ========================================
   Improvement Grid
   ======================================== */

.improvement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
    margin: var(--spacing-6) 0;
}

.improvement-item {
    background: var(--color-surface);
    padding: var(--spacing-5);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.improvement-item h4 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-4);
}

.improvement-item ul {
    margin-bottom: 0;
}

.improvement-item li {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-2);
}

/* ========================================
   Architecture Recommendations
   ======================================== */

.architecture-recommendations {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
    margin: var(--spacing-6) 0;
}

.arch-item {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(29, 78, 216, 0.05) 100%);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.arch-item h4 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-4);
}

/* ========================================
   Conclusion and Next Steps
   ======================================== */

.conclusion {
    background: var(--color-surface);
    padding: var(--spacing-8);
    border-radius: var(--radius-lg);
    border-top: 4px solid var(--color-primary);
    margin-top: var(--spacing-8);
}

.conclusion h3 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-4);
}

.next-steps {
    background: var(--color-background);
    padding: var(--spacing-6);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-6);
}

.next-steps h4 {
    color: var(--color-text);
    margin-bottom: var(--spacing-4);
}

.next-steps ol {
    padding-left: var(--spacing-5);
}

.next-steps li {
    margin-bottom: var(--spacing-3);
}

.next-steps strong {
    color: var(--color-primary-dark);
}

/* ========================================
   Failure Points
   ======================================== */

.failure-point {
    margin-bottom: var(--spacing-6);
    padding: var(--spacing-5);
    background: rgba(220, 38, 38, 0.05);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-error);
}

.failure-point h4 {
    color: var(--color-error);
    margin-bottom: var(--spacing-4);
}

/* ========================================
   Persistence Reasons
   ======================================== */

.persistence-reasons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-5);
    margin: var(--spacing-6) 0;
}

.reason-item {
    background: var(--color-surface);
    padding: var(--spacing-5);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-warning);
}

.reason-item h4 {
    color: var(--color-warning);
    margin-bottom: var(--spacing-3);
}

.reason-item p {
    margin-bottom: 0;
    color: var(--color-text-light);
}

/* ========================================
   OAuth Steps
   ======================================== */

.oauth-steps {
    margin: var(--spacing-6) 0;
}

.oauth-steps h4 {
    margin-bottom: var(--spacing-4);
}

.oauth-steps ol {
    background: var(--color-surface);
    padding: var(--spacing-5);
    border-radius: var(--radius-md);
}

.oauth-steps li {
    margin-bottom: var(--spacing-3);
    color: var(--color-text-light);
}

.oauth-steps strong {
    color: var(--color-text);
}

/* ========================================
   Session Requirements
   ======================================== */

.session-requirements ul {
    background: var(--color-surface);
    padding: var(--spacing-5);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.session-requirements li {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-2);
}

/* ========================================
   Responsive Design - Tablet
   ======================================== */

@media (max-width: 1024px) {
    .main-content {
        padding: var(--spacing-6);
    }

    .feature-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .improvement-grid {
        grid-template-columns: 1fr;
    }

    .symptom-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .report-header h1 {
        font-size: var(--font-size-3xl);
    }
}

/* ========================================
   Responsive Design - Mobile
   ======================================== */

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: 100%;
        max-width: 320px;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .mobile-nav-toggle {
        display: block;
    }

    .mobile-nav-close {
        display: block;
    }

    .main-content {
        margin-left: 0;
        padding: var(--spacing-16) var(--spacing-4) var(--spacing-8);
    }

    .report-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-2);
    }

    .report-header h1 {
        font-size: var(--font-size-2xl);
        line-height: var(--line-height-tight);
    }

    .report-abstract p {
        font-size: var(--font-size-base);
    }

    .card__header, .card__body {
        padding: var(--spacing-5);
    }

    .key-finding {
        padding: var(--spacing-5);
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }

    .process-flow {
        gap: var(--spacing-3);
    }

    .process-step {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-4);
    }

    .step-number {
        align-self: center;
        margin-bottom: var(--spacing-3);
    }

    .symptom-grid {
        grid-template-columns: 1fr;
    }

    .flow-comparison {
        gap: var(--spacing-3);
    }

    .quote-block {
        padding: var(--spacing-4);
    }

    .quote-block::before {
        font-size: 3rem;
        left: var(--spacing-3);
    }

    .quote-block blockquote {
        padding-left: var(--spacing-6);
        font-size: var(--font-size-base);
    }

    .export-buttons {
        flex-direction: column;
        gap: var(--spacing-2);
    }

    h1 {
        font-size: var(--font-size-2xl);
    }

    h2 {
        font-size: var(--font-size-xl);
    }

    h3 {
        font-size: var(--font-size-lg);
    }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .sidebar,
    .mobile-nav-toggle,
    .export-buttons {
        display: none !important;
    }

    .main-content {
        margin-left: 0;
        padding: 0;
    }

    .content-section {
        display: block !important;
        page-break-inside: avoid;
    }

    .card {
        box-shadow: none;
        border: 1px solid var(--color-border);
        margin-bottom: var(--spacing-6);
    }

    .quote-block {
        border: 1px solid var(--color-border);
        background: transparent;
    }

    .code-block {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
    }

    .code-block code {
        color: var(--color-text);
    }

    * {
        -webkit-print-color-adjust: exact !important;
        color-adjust: exact !important;
    }
}

/* ========================================
   Accessibility
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
.nav-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-text: #000000;
        --color-background: #ffffff;
        --color-border: #000000;
        --color-primary: #0000ff;
    }
}