/* CSS Variables for Light and Dark Themes */
:root {
    /* Light Theme Colors */
    --azure-blue: #0078d4;
    --azure-dark-blue: #106ebe;
    --azure-light-blue: #deecf9;
    --azure-teal: #00bcf2;
    --azure-purple: #5c2d91;
    --azure-green: #107c10;
    --azure-orange: #ff8c00;
    --azure-red: #d13438;

    /* GitHub Colors */
    --github-black: #24292f;
    --github-gray: #656d76;
    --github-light-gray: #f6f8fa;

    /* Light Theme Variables */
    --bg-primary: #ffffff;
    --bg-secondary: #fafbfc;
    --bg-tertiary: #f6f8fa;
    --text-primary: #24292f;
    --text-secondary: #656d76;
    --text-tertiary: #8c959f;
    --border-primary: #d1d9e0;
    --border-secondary: #e1e4e8;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --code-bg: #f6f8fa;
    --card-hover: #ffffff;

    /* Typography */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, 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: 2rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Shadows */
    --shadow-sm: 0 1px 3px var(--shadow-color);
    --shadow-md: 0 4px 12px var(--shadow-color);
    --shadow-lg: 0 8px 25px var(--shadow-color);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Theme Variables */
.dark-theme {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d30;
    --bg-tertiary: #3c3c3c;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-tertiary: #999999;
    --border-primary: #404040;
    --border-secondary: #515151;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --code-bg: #2d2d30;
    --card-hover: #2d2d30;
    --github-light-gray: #3c3c3c;
    --azure-light-blue: rgba(0, 120, 212, 0.1);
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--azure-light-blue) 100%);
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-primary);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.azure-icon {
    font-size: var(--font-size-2xl);
    color: var(--azure-blue);
}

.logo-text h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 400;
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* Theme Toggle */
.theme-toggle {
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: var(--azure-blue);
    color: var(--bg-primary);
    transform: scale(1.05);
}

.theme-icon-light,
.theme-icon-dark {
    position: absolute;
    font-size: var(--font-size-lg);
    transition: all var(--transition-normal);
}

.light-theme .theme-icon-light {
    opacity: 1;
    transform: rotate(0deg);
}

.light-theme .theme-icon-dark {
    opacity: 0;
    transform: rotate(180deg);
}

.dark-theme .theme-icon-light {
    opacity: 0;
    transform: rotate(-180deg);
}

.dark-theme .theme-icon-dark {
    opacity: 1;
    transform: rotate(0deg);
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 6px;
    border: none;
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--azure-blue);
    color: var(--bg-primary);
}

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

.btn-outline {
    background: transparent;
    color: var(--azure-blue);
    border: 1px solid var(--azure-blue);
}

.btn-outline:hover {
    background: var(--azure-blue);
    color: var(--bg-primary);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Navigation */
.nav-tabs {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-primary);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tab-container {
    display: flex;
    overflow-x: auto;
    gap: var(--spacing-sm);
    position: relative;
}

.tab-btn {
    padding: var(--spacing-lg);
    background: none;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    position: relative;
    z-index: 2;
}

.tab-btn.active {
    color: var(--azure-blue);
    border-bottom-color: var(--azure-blue);
    font-weight: 600;
    transform: translateY(-2px);
    background: var(--azure-light-blue);
}

.tab-btn:hover:not(.active) {
    color: var(--azure-dark-blue);
    background: var(--azure-light-blue);
    transform: translateY(-1px);
}

.tab-btn i {
    transition: transform 0.2s ease;
}

.tab-btn.active i {
    transform: scale(1.1);
}

/* Tab indicator animation */
.tab-container::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: var(--azure-blue);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

/* Main Content */
.main-content {
    padding: var(--spacing-2xl) 0;
    min-height: calc(100vh - 200px);
    position: relative;
    overflow: hidden;
}

.tab-content {
    display: none;
    opacity: 0;
    transform: translateX(30px) scale(0.95);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.tab-content.active {
    display: block;
    opacity: 1;
    transform: translateX(0) scale(1);
    animation: slideInContent 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.tab-content.exiting {
    opacity: 0;
    transform: translateX(-30px) scale(0.95);
}

@keyframes slideInContent {
    0% {
        opacity: 0;
        transform: translateX(50px) scale(0.9);
    }
    60% {
        opacity: 0.8;
        transform: translateX(-5px) scale(1.02);
    }
    100% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes slideOutContent {
    0% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateX(-50px) scale(0.9);
    }
}

/* Hero Section */
.hero-section {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-2xl);
    transition: all 0.3s ease;
}

.hero-text h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.hero-text p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
}

.confidence-meter {
    text-align: center;
    min-width: 300px;
}

.meter-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.meter-bar {
    width: 100%;
    height: 12px;
    background: var(--border-primary);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.meter-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--azure-green), var(--azure-teal));
    width: 0%;
    transition: width 2s ease;
    animation: meterFill 2s ease forwards;
}

@keyframes meterFill {
    to { width: 80%; }
}

.meter-text {
    font-size: var(--font-size-sm);
    color: var(--azure-green);
    font-weight: 600;
}

/* Comparison Grid */
.comparison-grid {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.comparison-card {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-secondary);
}

.comparison-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.card-header i {
    font-size: var(--font-size-xl);
    color: var(--azure-blue);
}

.card-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.platform-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.platform {
    padding: var(--spacing-lg);
    border-radius: 8px;
    border: 2px solid transparent;
    transition: all var(--transition-normal);
}

.platform.github {
    background: var(--github-light-gray);
    border-color: var(--github-gray);
}

.platform.ado {
    background: var(--azure-light-blue);
    border-color: var(--azure-blue);
}

.platform-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.platform-header i {
    font-size: var(--font-size-lg);
}

.platform.github .platform-header i {
    color: var(--github-black);
}

.platform.ado .platform-header i {
    color: var(--azure-blue);
}

.platform-header span {
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

.platform p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.feature-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.feature {
    background: rgba(0, 120, 212, 0.1);
    color: var(--azure-dark-blue);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: var(--font-size-xs);
    font-weight: 500;
}

/* Key Takeaway */
.key-takeaway {
    background: linear-gradient(135deg, var(--azure-green), var(--azure-teal));
    color: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.takeaway-icon i {
    font-size: var(--font-size-3xl);
    opacity: 0.9;
}

.takeaway-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.takeaway-content p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

/* Demo Header */
.demo-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.demo-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.demo-header p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* Workflow Container */
.workflow-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.workflow-column {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-secondary);
    transition: all 0.3s ease;
}

.workflow-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-primary);
}

.workflow-header.github {
    border-bottom-color: var(--github-black);
}

.workflow-header.ado {
    border-bottom-color: var(--azure-blue);
}

.workflow-header i {
    font-size: var(--font-size-xl);
}

.workflow-header.github i {
    color: var(--github-black);
}

.workflow-header.ado i {
    color: var(--azure-blue);
}

.workflow-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.workflow-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.workflow-step {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: 8px;
    transition: all var(--transition-normal);
    opacity: 0.4;
}

.workflow-step.active {
    background: var(--azure-light-blue);
    opacity: 1;
    transform: translateX(8px);
    border-left: 4px solid var(--azure-blue);
}

.workflow-step.completed {
    opacity: 1;
    background: rgba(16, 124, 16, 0.1);
    border-left: 4px solid var(--azure-green);
}

.step-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--border-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    flex-shrink: 0;
}

.workflow-step.active .step-icon {
    background: var(--azure-blue);
    color: var(--bg-primary);
    animation: pulse 1.5s infinite;
}

.workflow-step.completed .step-icon {
    background: var(--azure-green);
    color: var(--bg-primary);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.step-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.step-content code {
    background: var(--code-bg);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: var(--font-size-xs);
    color: var(--text-primary);
    border: 1px solid var(--border-secondary);
}

.step-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Workflow Differences */
.workflow-differences {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-secondary);
    transition: all 0.3s ease;
}

.workflow-differences h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--text-primary);
}

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

.difference-item {
    text-align: center;
    padding: var(--spacing-lg);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    transition: all var(--transition-normal);
    background: var(--bg-secondary);
}

.difference-item:hover {
    border-color: var(--azure-blue);
    background: var(--azure-light-blue);
    transform: translateY(-2px);
}

.difference-item i {
    font-size: var(--font-size-2xl);
    color: var(--azure-blue);
    margin-bottom: var(--spacing-md);
}

.difference-item h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.difference-item p {
    color: var(--text-secondary);
}

/* Work Item Comparison */
.workitem-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.workitem-column {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-secondary);
    transition: all 0.3s ease;
}

.workitem-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-primary);
}

.workitem-header.github {
    border-bottom-color: var(--github-black);
}

.workitem-header.ado {
    border-bottom-color: var(--azure-blue);
}

.workitem-header i {
    font-size: var(--font-size-xl);
}

.workitem-header.github i {
    color: var(--github-black);
}

.workitem-header.ado i {
    color: var(--azure-blue);
}

.workitem-header h3 {
    color: var(--text-primary);
    font-weight: 600;
}

.issue-example {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.issue-card {
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    padding: var(--spacing-lg);
    background: var(--github-light-gray);
}

.issue-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.issue-number {
    background: var(--github-black);
    color: var(--bg-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.issue-title h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.issue-labels {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.label {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 12px;
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.label.enhancement {
    background: var(--azure-green);
    color: var(--bg-primary);
}

.label.priority-high {
    background: var(--azure-red);
    color: var(--bg-primary);
}

.issue-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Work Item Hierarchy */
.workitem-hierarchy {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.workitem-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid;
    transition: all var(--transition-normal);
}

.workitem-card.epic {
    background: rgba(92, 45, 145, 0.1);
    border-left-color: var(--azure-purple);
}

.workitem-card.feature {
    background: rgba(0, 120, 212, 0.1);
    border-left-color: var(--azure-blue);
    margin-left: var(--spacing-lg);
}

.workitem-card.task {
    background: rgba(16, 124, 16, 0.1);
    border-left-color: var(--azure-green);
    margin-left: var(--spacing-xl);
}

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

.workitem-icon {
    font-size: var(--font-size-lg);
}

.workitem-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.workitem-id {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: 500;
}

.hierarchy-line {
    width: 2px;
    height: 20px;
    background: var(--border-primary);
    margin-left: calc(var(--spacing-lg) + 10px);
}

.workitem-cards-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Benefits Section */
.workitem-benefits, .pipeline-advantages {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-secondary);
    transition: all 0.3s ease;
}

.workitem-benefits h3, .pipeline-advantages h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--text-primary);
}

.benefits-grid, .advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.benefit-card, .advantage-card {
    text-align: center;
    padding: var(--spacing-lg);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    transition: all var(--transition-normal);
    background: var(--bg-secondary);
}

.benefit-card:hover, .advantage-card:hover {
    border-color: var(--azure-blue);
    background: var(--azure-light-blue);
    transform: translateY(-2px);
}

.benefit-card i, .advantage-card i {
    font-size: var(--font-size-2xl);
    color: var(--azure-blue);
    margin-bottom: var(--spacing-md);
}

.benefit-card h4, .advantage-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.benefit-card p, .advantage-card p {
    color: var(--text-secondary);
}

/* Pipeline Comparison */
.pipeline-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.pipeline-column {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-secondary);
    transition: all 0.3s ease;
}

.pipeline-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-primary);
}

.pipeline-header.github {
    border-bottom-color: var(--github-black);
}

.pipeline-header.ado {
    border-bottom-color: var(--azure-blue);
}

.pipeline-header i {
    font-size: var(--font-size-xl);
}

.pipeline-header.github i {
    color: var(--github-black);
}

.pipeline-header.ado i {
    color: var(--azure-blue);
}

.pipeline-header h3 {
    color: var(--text-primary);
    font-weight: 600;
}

.pipeline-code {
    background: var(--code-bg);
    border-radius: 8px;
    padding: var(--spacing-lg);
    overflow-x: auto;
    border: 1px solid var(--border-secondary);
}

.pipeline-code pre {
    margin: 0;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: var(--font-size-sm);
    line-height: 1.4;
    color: var(--text-primary);
}

/* Pipeline Stages */
.pipeline-stages {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-2xl);
    gap: var(--spacing-md);
    overflow-x: auto;
    border: 1px solid var(--border-secondary);
    transition: all 0.3s ease;
}

.stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-width: 150px;
    opacity: 0.4;
    transition: all var(--transition-normal);
}

.stage.active {
    opacity: 1;
    transform: scale(1.05);
}

.stage.completed {
    opacity: 1;
}

.stage-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--border-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-normal);
}

.stage.active .stage-icon {
    background: var(--azure-blue);
    color: var(--bg-primary);
    animation: pulse 1.5s infinite;
}

.stage.completed .stage-icon {
    background: var(--azure-green);
    color: var(--bg-primary);
}

.stage-icon i {
    font-size: var(--font-size-xl);
}

.stage-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.stage-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: var(--bg-primary);
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-2xl);
    transition: all 0.3s ease;
}

/* Ripple Effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    pointer-events: none;
    animation: rippleAnimation 0.6s linear;
}

@keyframes rippleAnimation {
    to {
        transform: scale(2);
        opacity: 0;
    }
}

.btn {
    position: relative;
    overflow: hidden;
}

/* Enhanced focus styles for accessibility */
.btn:focus, .tab-btn:focus, .theme-toggle:focus {
    outline: 2px solid var(--azure-blue);
    outline-offset: 2px;
}

/* Loading states */
.btn-loading {
    position: relative;
    color: transparent;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Smooth transitions for all interactive elements */
* {
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .logo-section {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .logo-text h1 {
        font-size: var(--font-size-xl);
    }

    .hero-section {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-lg);
    }

    .hero-text h2 {
        font-size: var(--font-size-2xl);
    }

    .confidence-meter {
        min-width: auto;
        width: 100%;
        margin-top: var(--spacing-lg);
    }

    .platform-comparison {
        grid-template-columns: 1fr;
    }

    .workflow-container {
        grid-template-columns: 1fr;
    }

    .workitem-comparison {
        grid-template-columns: 1fr;
    }

    .pipeline-comparison {
        grid-template-columns: 1fr;
    }

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

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

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

    .pipeline-stages {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .stage {
        min-width: auto;
        width: 100%;
    }

    .tab-container {
        justify-content: center;
    }

    .tab-btn {
        flex-direction: column;
        padding: var(--spacing-md);
        text-align: center;
    }

    .tab-btn span {
        font-size: var(--font-size-xs);
    }

    .workflow-step, .stage {
        padding: var(--spacing-sm);
    }

    .step-content h4, .stage-content h4 {
        font-size: var(--font-size-sm);
    }

    .pipeline-code {
        font-size: var(--font-size-xs);
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-text h2 {
        font-size: var(--font-size-xl);
    }

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

    .header-actions {
        flex-direction: row;
        justify-content: center;
    }

    .theme-toggle {
        width: 45px;
        height: 45px;
    }
}

/* Dark theme specific adjustments */
.dark-theme .platform.github {
    background: var(--bg-tertiary);
    border-color: var(--text-secondary);
}

.dark-theme .platform.github .platform-header span,
.dark-theme .platform.ado .platform-header span {
    color: var(--text-primary);
}

.dark-theme .issue-card {
    background: var(--bg-tertiary);
    border-color: var(--border-primary);
}

.dark-theme .issue-number {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.dark-theme .pipeline-code {
    background: var(--bg-tertiary);
}

.dark-theme .step-content code {
    background: var(--bg-tertiary);
}

/* Print Styles */
@media print {
    .header-actions,
    .nav-tabs,
    .btn,
    .theme-toggle {
        display: none;
    }

    .tab-content {
        display: block !important;
    }

    body {
        background: white;
        color: black;
    }

    .comparison-card,
    .workflow-column,
    .workitem-column,
    .pipeline-column {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
        margin-bottom: 1rem;
    }

    .hero-section {
        break-inside: avoid;
    }

    .tab-content {
        page-break-before: auto;
    }

    .key-takeaway {
        background: #f0f0f0 !important;
        color: black !important;
    }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .meter-fill {
        animation: none;
        width: 80% !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-primary: #000000;
        --border-secondary: #000000;
    }

    .dark-theme {
        --border-primary: #ffffff;
        --border-secondary: #ffffff;
    }

    .btn-outline {
        border-width: 2px;
    }

    .comparison-card,
    .workflow-column,
    .workitem-column {
        border-width: 2px;
    }
}

/* Enhanced animations for better UX */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Intersection observer animations */
.animate-in {
    animation: slideInUp 0.6s ease-out;
}

.animate-in-left {
    animation: slideInLeft 0.6s ease-out;
}

.animate-in-right {
    animation: slideInRight 0.6s ease-out;
}

/* Theme transition effects */
.theme-transitioning * {
    transition: background-color 0.3s ease,
                color 0.3s ease,
                border-color 0.3s ease,
                box-shadow 0.3s ease !important;
}

/* Custom scrollbar for better aesthetics */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--azure-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--azure-dark-blue);
}

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--azure-blue) var(--bg-secondary);
}

/* Selection colors */
::selection {
    background: var(--azure-light-blue);
    color: var(--azure-dark-blue);
}

.dark-theme ::selection {
    background: rgba(0, 120, 212, 0.3);
    color: var(--text-primary);
}