/* Variables CSS - Améliorations contraste */
:root {
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --success-color: #10b981;
    --success-dark: #065f46; /* Nouveau: vert très foncé pour contraste */
    --warning-color: #f59e0b;
    --warning-dark: #92400e; /* Nouveau: orange très foncé pour contraste */
    --error-color: #ef4444;
    --error-dark: #7f1d1d; /* Nouveau: rouge très foncé pour contraste */
    --info-color: #3b82f6;
    
    --text-primary: #1a202c; /* Texte principal très foncé */
    --text-secondary: #2d3748; /* Plus foncé qu'avant (#4a5568 → #2d3748) */
    --text-muted: #4a5568; /* Plus foncé qu'avant (#718096 → #4a5568) */
    --text-inverse: #ffffff;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-dark: #1a202c;
    --bg-gradient: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    --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-size-5xl: 3rem;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease-in-out;
    
    --container-max-width: 1200px;
    --navbar-height: 70px;
}

/* Reset et base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    /* Assure un décalage global pour les ancres sous une navbar fixe */
    scroll-padding-top: calc(var(--navbar-height) + 20px);
    font-size: 16px;
}

/* Chaque section cible d'ancre laisse un espace sous la navbar fixe */
section[id] {
    scroll-margin-top: calc(var(--navbar-height) + 20px);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

/* Typographie */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: #1a1a1a !important;
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

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

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

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

/* Boutons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--bg-gradient);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--text-inverse);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
    transform: translateY(-2px);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.brand-emoji {
    font-size: var(--font-size-2xl);
}

.brand-text {
    font-size: var(--font-size-xl);
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: var(--font-weight-normal);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--bg-gradient);
    transition: var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    padding: calc(var(--navbar-height) + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    color: var(--text-inverse);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.1"><circle cx="30" cy="30" r="1"/></g></svg>');
    animation: float 20s infinite linear;
}

@keyframes float {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-60px); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    max-width: var(--container-max-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
    will-change: transform;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.gradient-text {
    background: linear-gradient(45deg, #ffffff, #f093fb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    line-height: 1.6;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.stat {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    will-change: transform;
}

.app-mockup {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-xl);
    max-width: 400px;
    width: 100%;
}

.mockup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.mockup-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.red { background: #ff5f56; }
.control.yellow { background: #ffbd2e; }
.control.green { background: #27ca3f; }

.mockup-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.mockup-content {
    aspect-ratio: 16/10;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mockup-placeholder {
    text-align: center;
    opacity: 0.7;
}

.mockup-placeholder i {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    display: block;
}

/* Image de capture d'écran dans la maquette */
.mockup-content img.mockup-image {
    max-width: 100%;
    max-height: 100%;
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.03);
}

/* Phone frame styles */
.phone-frame {
    position: relative;
    width: 100%;
    max-width: 320px;
    aspect-ratio: 9 / 19.5;
    background: #111;
    border-radius: 36px;
    padding: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35), inset 0 0 0 2px rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.phone-notch {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 22px;
    background: #000;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 16px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.5);
}

.phone-screen {
    width: 100%;
    height: 100%;
    border-radius: 24px;
    object-fit: contain;
    background: #000;
    display: block;
    cursor: zoom-in;
}

.phone-frame:hover .phone-screen {
    filter: brightness(1.02);
}

/* Image modal */
.image-modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.image-modal.open { display: flex; }

.image-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(2px);
}

.image-modal-dialog {
    position: relative;
    background: #111;
    border-radius: 12px;
    padding: 12px;
    box-shadow: var(--shadow-xl);
    max-width: 95vw;
    max-height: 95vh;
}

.image-modal-dialog img {
    max-width: 90vw;
    max-height: 85vh;
    display: block;
    border-radius: 8px;
}

.image-modal-close {
    position: absolute;
    top: 6px;
    right: 8px;
    background: rgba(255,255,255,0.12);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
}

.image-modal-close:hover { background: rgba(255,255,255,0.2); }

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    opacity: 0.8;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* Tech Stack Section */
.tech-stack {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.tech-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.tech-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    color: var(--text-inverse);
    position: relative;
}

.tech-icon.angular { background: linear-gradient(135deg, #dd0031, #c3002f); }
.tech-icon.nodejs { background: linear-gradient(135deg, #339933, #87d587); }
.tech-icon.mysql { background: linear-gradient(135deg, #4479a1, #8bb4d1); }
.tech-icon.docker { background: linear-gradient(135deg, #0db7ed, #9cdef0); }
.tech-icon.jwt { background: linear-gradient(135deg, #000000, #5c5c5c); }
.tech-icon.ai { background: linear-gradient(135deg, #ff6b6b, #feca57); }

.tech-icon::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border-radius: var(--border-radius-lg);
    z-index: -1;
    opacity: 0;
    transition: var(--transition);
}

.tech-item:hover .tech-icon::after {
    opacity: 0.3;
}

/* Sections principales */
.main-content {
    position: relative;
}

.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-number {
    display: inline-block;
    background: var(--bg-gradient);
    color: var(--text-inverse);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    line-height: 60px;
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* Cards et grilles */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.content-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition);
}

.content-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: var(--spacing-xl);
    background: var(--bg-gradient);
    color: var(--text-inverse);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.card-header i {
    font-size: var(--font-size-2xl);
}

.card-header h3 {
    margin: 0;
    font-size: var(--font-size-xl);
}

.card-content {
    padding: var(--spacing-xl);
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.feature-list i {
    color: var(--success-color);
    flex-shrink: 0;
}

/* Feature list dans les sections colorées - Contraste amélioré */
.analytics-advanced-section .feature-list li,
.gamification-section .feature-list li {
    color: #ffffff !important;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.analytics-advanced-section .feature-list i,
.gamification-section .feature-list i {
    color: #ffffff !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

/* Métriques */
.metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-lg);
}

.metric {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.metric-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.metric-label {
    font-size: var(--font-size-sm);
    color: #1a1a1a !important;
}

/* Diagrammes */
.diagram-container {
    margin-top: var(--spacing-3xl);
}

.diagram-svg {
    width: 100%;
    height: auto;
    max-height: 600px;
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    margin: var(--spacing-lg) 0;
}

.architecture-diagram h4,
.erd-diagram h4 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    font-size: var(--font-size-xl);
}

.entity {
    transition: all 0.3s ease;
    cursor: pointer;
}

.entity:hover {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
    transform: scale(1.02);
}

.layer {
    transition: all 0.3s ease;
}

.layer:hover {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

/* AI Moderation Demo */
.ai-moderation-demo {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color);
}

.demo-container h4 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
    font-size: var(--font-size-xl);
}

.demo-step {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    position: relative;
}

.demo-step::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 35px;
    width: 2px;
    height: 15px;
    background: var(--primary-color);
}

.demo-step:last-of-type::after {
    display: none;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--bg-gradient);
    color: var(--text-inverse);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content h5 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
}

.code-snippet {
    background: var(--bg-dark);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.code-snippet code {
    color: #e2e8f0;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: var(--font-size-sm);
    white-space: pre-line;
}

.sentiment-analysis {
    margin: var(--spacing-md) 0;
}

.sentiment-bar {
    display: flex;
    height: 20px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
    background: var(--bg-secondary);
}

.sentiment-positive {
    background: linear-gradient(90deg, #10b981, #34d399);
    color: var(--text-inverse); /* Blanc pour contraste */
}

.sentiment-neutral {
    background: linear-gradient(90deg, #f59e0b, #fbbf24);
    color: var(--text-inverse); /* Blanc pour contraste */
}

.sentiment-negative {
    background: linear-gradient(90deg, #ef4444, #f87171);
    color: var(--text-inverse); /* Blanc pour contraste */
}

.sentiment-labels {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.sentiment-labels span {
    font-weight: var(--font-weight-medium);
}

.sentiment-labels .positive { color: var(--success-color); }
.sentiment-labels .neutral { color: var(--warning-color); }
.sentiment-labels .negative { color: var(--error-color); }

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

.suggestion {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.suggestion i {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

.suggestion span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.demo-result {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
    border: 2px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

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

.result-header i {
    color: var(--success-color);
    font-size: var(--font-size-xl);
}

.result-header h5 {
    margin: 0;
    color: var(--success-color);
    font-size: var(--font-size-lg);
}

.result-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--border-radius);
}

.detail-item .label {
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
}

.detail-item .value {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.detail-item .value.good {
    color: var(--success-color);
}

.api-flow {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.api-flow h5 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    text-align: center;
}

.flow-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.api-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.api-step .method {
    background: var(--info-color);
    color: var(--text-inverse);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xs);
}

.api-step .endpoint {
    font-family: 'Monaco', 'Menlo', monospace;
    background: var(--bg-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.api-step .service {
    background: var(--warning-color);
    color: var(--text-inverse);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-medium);
}

.api-step .result {
    background: var(--success-color);
    color: var(--text-inverse);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-bold);
}

.api-step .arrow {
    color: var(--primary-color);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
}

/* Animations pour les diagrammes */
@keyframes diagramFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.diagram-svg {
    animation: diagramFadeIn 0.8s ease-out;
}

.entity,
.layer {
    animation: diagramFadeIn 0.6s ease-out;
}

.entity:nth-child(1) { animation-delay: 0.1s; }
.entity:nth-child(2) { animation-delay: 0.2s; }
.entity:nth-child(3) { animation-delay: 0.3s; }
.entity:nth-child(4) { animation-delay: 0.4s; }
.entity:nth-child(5) { animation-delay: 0.5s; }

/* Animation pour la démo IA */
.demo-step {
    animation: slideInLeft 0.6s ease-out;
    animation-fill-mode: both;
}

.demo-step:nth-child(1) { animation-delay: 0.2s; }
.demo-step:nth-child(2) { animation-delay: 0.4s; }
.demo-step:nth-child(3) { animation-delay: 0.6s; }

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

.sentiment-bar div {
    animation: growWidth 1.5s ease-out;
    animation-fill-mode: both;
}

.sentiment-positive { animation-delay: 0.2s; }
.sentiment-neutral { animation-delay: 0.4s; }
.sentiment-negative { animation-delay: 0.6s; }

@keyframes growWidth {
    from {
        width: 0;
    }
    to {
        width: var(--target-width, 100%);
    }
}

/* Analytics Dashboard */
.analytics-dashboard {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color);
}

.analytics-dashboard h4 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
    font-size: var(--font-size-xl);
}

.dashboard-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.metrics-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.metric-widget {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.metric-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.metric-data {
    flex: 1;
}

.metric-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: #1a1a1a !important;
    line-height: 1;
}

.metric-label {
    font-size: var(--font-size-sm);
    color: #1a1a1a !important;
    margin: var(--spacing-xs) 0;
}

.metric-change {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
}

.metric-change.positive {
    background: rgba(16, 185, 129, 0.1);
    color: #1a1a1a !important;
}

.metric-change.negative {
    background: rgba(239, 68, 68, 0.1);
    color: #1a1a1a !important;
}

.metric-change.neutral {
    background: rgba(156, 163, 175, 0.1);
    color: #1a1a1a !important;
}

.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.chart-widget {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.chart-widget.wide {
    grid-column: 1 / -1;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.chart-header h5 {
    margin: 0;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
}

.chart-controls {
    display: flex;
    gap: var(--spacing-xs);
}

.chart-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: var(--transition-fast);
}

.chart-btn.active,
.chart-btn:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
    border-color: var(--primary-color);
}

.chart-container {
    position: relative;
}

.line-chart {
    width: 100%;
    height: auto;
}

.trend-line {
    animation: drawLine 2s ease-out;
}

.data-point {
    animation: scaleIn 0.5s ease-out;
    animation-fill-mode: both;
    cursor: pointer;
    transition: all 0.2s ease;
}

.data-point:hover {
    r: 6;
    filter: drop-shadow(0 2px 4px rgba(102, 126, 234, 0.4));
}

.data-point:nth-child(3) { animation-delay: 0.1s; }
.data-point:nth-child(4) { animation-delay: 0.2s; }
.data-point:nth-child(5) { animation-delay: 0.3s; }
.data-point:nth-child(6) { animation-delay: 0.4s; }
.data-point:nth-child(7) { animation-delay: 0.5s; }
.data-point:nth-child(8) { animation-delay: 0.6s; }
.data-point:nth-child(9) { animation-delay: 0.7s; }

@keyframes drawLine {
    from {
        stroke-dasharray: 1000;
        stroke-dashoffset: 1000;
    }
    to {
        stroke-dasharray: 1000;
        stroke-dashoffset: 0;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.donut-chart {
    width: 200px;
    height: 200px;
    margin: 0 auto var(--spacing-lg);
}

.donut-segment {
    animation: drawDonut 1.5s ease-out;
    animation-fill-mode: both;
    transition: all 0.3s ease;
}

.donut-segment:hover {
    stroke-width: 22;
    filter: brightness(1.1);
}

.donut-segment:nth-child(2) { animation-delay: 0.2s; }
.donut-segment:nth-child(3) { animation-delay: 0.4s; }
.donut-segment:nth-child(4) { animation-delay: 0.6s; }
.donut-segment:nth-child(5) { animation-delay: 0.8s; }

@keyframes drawDonut {
    from {
        stroke-dashoffset: 502;
    }
    to {
        stroke-dashoffset: var(--final-offset);
    }
}

.donut-legend {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    flex-shrink: 0;
}

.legend-text {
    color: #1a1a1a !important;
    font-weight: var(--font-weight-medium);
}

.heatmap-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.heatmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.heatmap-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.heatmap-cell::before {
    content: attr(data-value) '%';
    position: absolute;
    top: 5px;
    right: 8px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: inherit;
    opacity: 0.7;
}

.heatmap-cell.low {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.2));
    color: #7f1d1d; /* Rouge très foncé pour contraste */
}

.heatmap-cell.medium {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.2));
    color: #92400e; /* Orange très foncé pour contraste */
}

.heatmap-cell.high {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.2));
    color: #065f46; /* Vert très foncé pour contraste */
}

.heatmap-cell:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.cell-label {
    font-size: var(--font-size-2xl);
}

.cell-value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-align: center;
}

.heatmap-scale {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    justify-content: center;
}

.scale-gradient {
    width: 100px;
    height: 8px;
    background: linear-gradient(90deg, var(--error-color), var(--warning-color), var(--success-color));
    border-radius: 4px;
}

.alerts-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
}

.alerts-section h5 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
}

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

.alert-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    border-left: 4px solid;
    transition: var(--transition-fast);
}

.alert-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.alert-item.success {
    border-left-color: var(--success-color);
}

.alert-item.warning {
    border-left-color: var(--warning-color);
}

.alert-item.info {
    border-left-color: var(--info-color);
}

.alert-item i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.alert-item.success i { color: var(--success-color); }
.alert-item.warning i { color: var(--warning-color); }
.alert-item.info i { color: var(--info-color); }

.alert-item span:nth-child(2) {
    flex: 1;
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.alert-time {
    font-size: var(--font-size-xs) !important;
    color: var(--text-muted) !important;
    font-weight: var(--font-weight-normal) !important;
}

/* Responsive pour le dashboard */
@media (max-width: 768px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .metrics-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .donut-legend {
        grid-template-columns: 1fr;
    }
    
    .heatmap-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .chart-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }

    /* Dashboard Analytics - mobile first overrides */
    .dashboard-analytics-section .analytics-dashboard {
        padding: var(--spacing-lg);
        border-radius: var(--border-radius-lg);
    }
    .dashboard-container { padding: 0; gap: var(--spacing-lg); }

    .charts-section { gap: var(--spacing-lg); }
    .charts-section .charts-grid { grid-template-columns: 1fr; gap: var(--spacing-lg); }
    .charts-section .chart-widget { border-radius: var(--border-radius-lg); }
    .charts-section .chart-widget.large,
    .charts-section .chart-widget.medium,
    .charts-section .chart-widget.full-width { grid-column: 1; }
    .charts-section .chart-header { padding: 12px; }
    .charts-section .chart-header h5 { font-size: 1rem; }
    .charts-section .chart-btn { padding: 4px 10px; font-size: 0.75rem; }
    .charts-section .chart-container { padding: 12px; overflow: visible; }
    .line-chart { width: 100%; height: auto; }
    .donut-chart { width: min(80vw, 260px); height: auto; }
}

/* Extra-small: affiner la lisibilité des graphiques */
@media (max-width: 480px) {
    .charts-section .chart-header { padding: 10px; }
    .charts-section .chart-container { padding: 10px; }
    .charts-section .chart-btn { padding: 4px 8px; font-size: 0.7rem; }
    .line-chart { width: 100%; height: auto; }
    .line-chart text { font-size: 12px !important; }
    .donut-chart { width: min(85vw, 220px); height: auto; }
}

@media (max-width: 480px) {
    .metrics-row {
        grid-template-columns: 1fr;
    }
    
    .heatmap-grid {
        grid-template-columns: 1fr;
    }
    
    .metric-widget {
        flex-direction: column;
        text-align: center;
    }
}

/* Database Section */
.database-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.stat-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.stat-card i {
    font-size: var(--font-size-3xl);
    color: var(--primary-color);
    flex-shrink: 0;
}

.stat-info h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-size: var(--font-size-xl);
}

.stat-info p {
    margin: 0;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* Tabs */
.content-tabs {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.tab-nav {
    display: flex;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: transparent;
    border: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--bg-primary);
    color: var(--primary-color);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--bg-gradient);
}

.tab-content {
    padding: var(--spacing-xl);
}

.tab-pane {
    display: none;
}

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

/* Code blocks */
.code-block {
    background: var(--bg-dark);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-inverse);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.copy-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--text-inverse);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-fast);
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

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

.code-block code {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: #e2e8f0;
}

/* Performance metrics */
.performance-metrics {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.metric-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.metric-name {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.metric-value {
    font-weight: var(--font-weight-bold);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
}

.metric-value.good {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.metric-value.excellent {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
}

/* API Section */
.api-overview {
    margin-bottom: var(--spacing-3xl);
}

.api-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
}

.api-stat {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    min-width: 150px;
}

.api-sections {
    display: grid;
    gap: var(--spacing-xl);
}

.api-section {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.api-section h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

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

.endpoint {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.method {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--text-inverse);
    min-width: 60px;
    text-align: center;
}

.method.get { background: var(--success-color); }
.method.post { background: var(--info-color); }
.method.put { background: var(--warning-color); }
.method.delete { background: var(--error-color); }

.path {
    font-family: 'Monaco', 'Menlo', monospace;
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    flex-shrink: 0;
    min-width: 200px;
}

.description {
    color: var(--text-secondary);
    flex: 1;
}

/* Frontend Section */
.frontend-features {
    margin-bottom: var(--spacing-3xl);
}

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

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-card i {
    font-size: var(--font-size-4xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

.component-showcase {
    margin-top: var(--spacing-3xl);
}

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

.component-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition);
}

.component-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.component-preview {
    aspect-ratio: 16/10;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-placeholder {
    text-align: center;
    color: var(--text-muted);
}

.preview-placeholder i {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.component-card h4 {
    padding: var(--spacing-lg);
    margin: 0;
    color: var(--text-primary);
}

.component-card p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Features Section */
.features-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3xl);
}

.feature-highlight {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-3xl);
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
}

.feature-highlight.reverse {
    background: var(--bg-secondary);
}

.feature-highlight.reverse .feature-content {
    order: 2;
}

.feature-highlight.reverse .feature-visual {
    order: 1;
}

.feature-content h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.feature-content ul {
    list-style: none;
    margin-top: var(--spacing-lg);
}

.feature-content li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.feature-content li::before {
    content: '✓';
    color: var(--success-color);
    font-weight: var(--font-weight-bold);
}

.gamification-stats,
.analytics-metrics {
    display: grid;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.game-stat,
.metric-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--border-radius);
}

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

.stat-text {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.metric-number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
}

.metric-desc {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.feature-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-placeholder {
    width: 100%;
    aspect-ratio: 16/10;
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.visual-placeholder i {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

/* Tests Section */
.testing-pyramid {
    max-width: 600px;
    margin: 0 auto var(--spacing-3xl);
}

.pyramid-level {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.level-info {
    min-width: 200px;
    text-align: right;
}

.level-info h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.test-count {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.level-bar {
    height: 40px;
    background: var(--bg-gradient);
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
}

.level-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

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

.test-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.result-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.result-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.result-card.success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
    border: 2px solid rgba(16, 185, 129, 0.2);
}

.result-card i {
    font-size: var(--font-size-3xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

.result-card.success i {
    color: var(--success-color);
}

.result-card h3 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.result-card p {
    margin: 0;
    color: var(--text-secondary);
}

/* Deployment Section */
.deployment-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

.flow-step {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    min-width: 150px;
    transition: var(--transition);
}

.flow-step:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: var(--bg-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-2xl);
}

.flow-arrow {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    font-weight: var(--font-weight-bold);
}

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

.infra-card {
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.infra-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.infra-card i {
    font-size: var(--font-size-3xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

.infra-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.infra-card p {
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}

.card-stats {
    display: flex;
    gap: var(--spacing-md);
}

.card-stats span {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-inverse);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-inverse);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--navbar-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--navbar-height));
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--spacing-3xl);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    /* Fix spacing between buttons and phone mockup on mobile */
    .hero-image { margin-top: var(--spacing-xl); }
    .app-mockup { margin-left: auto; margin-right: auto; }
    
    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .database-stats {
        grid-template-columns: 1fr;
    }
    
    .api-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .feature-highlight {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .feature-highlight.reverse .feature-content,
    .feature-highlight.reverse .feature-visual {
        order: unset;
    }
    
    .deployment-flow {
        flex-direction: column;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .metrics {
        grid-template-columns: 1fr;
    }
    
    .tab-nav {
        flex-direction: column;
    }
    
    .endpoint {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .path {
        min-width: unset;
    }
}

/* Animations et transitions */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Dashboard Grid Layout Optimisé - Nouvelle Version */
.dashboard-container {
    display: flex;
    flex-direction: column;
    gap: 25px;
    padding: 20px;
}

/* Métriques - Section distincte */
.metrics-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    padding: 20px;
    color: white;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

.metrics-section .metrics-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.metrics-section .metric-widget {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: all 0.3s ease;
}

.metrics-section .metric-widget:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.metrics-section .metric-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.metrics-section .metric-data {
    flex: 1;
}

.metrics-section .metric-value {
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 5px;
    line-height: 1;
}

.metrics-section .metric-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 8px;
}

.metrics-section .metric-change {
    font-size: 0.8rem;
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 600;
}

.metrics-section .metric-change.positive {
    background: rgba(16, 185, 129, 0.15);
    color: #065f46; /* Vert très foncé pour contraste */
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.metrics-section .metric-change.negative {
    background: rgba(239, 68, 68, 0.15);
    color: #7f1d1d; /* Rouge très foncé pour contraste */
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Graphiques - Grid optimisé */
.charts-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Nouvelle disposition: lignes séparées (mobile-first) */
.charts-section .charts-row { display: block; }

/* Engagement: pleine largeur */
.charts-section .chart-widget.engagement { width: 100%; }

/* Répartition des réactions: centré et contenu en colonne */
.charts-section .chart-widget.reactions {
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}
.charts-section .chart-widget.reactions .chart-header {
    justify-content: center;
}
.charts-section .chart-widget.reactions .chart-container {
    display: flex;
    justify-content: center;
}
.charts-section .chart-widget.reactions .donut-legend {
    justify-items: center;
}

/* Répartition des Réactions: textes en noir foncé */
.charts-section .chart-widget.reactions .legend-text,
.charts-section .chart-widget.reactions .legend-item,
.charts-section .chart-widget.reactions .chart-header h5 {
    color: #1a202c !important; /* noir foncé lisible */
}
.charts-section .chart-widget.reactions .chart-container svg text {
    fill: #1a202c !important; /* centre du donut (Total, etc.) */
}

/* Bouton actif (ex: 7j) en texte noir foncé pour lisibilité */
.dashboard-analytics-section .chart-btn.active {
    color: #1a202c;
}

.charts-section .chart-widget {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.charts-section .chart-widget:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.charts-section .chart-widget.large {
    /* Graphique d'engagement - occupe la colonne de gauche */
    grid-column: 1;
}

.charts-section .chart-widget.medium {
    /* Graphique donut - occupe la colonne de droite */
    grid-column: 2;
}

.charts-section .chart-widget.full-width {
    /* Heatmap - occupe toute la largeur */
    grid-column: 1 / -1;
}

.charts-section .chart-header {
    padding: 20px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.charts-section .chart-header h5 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: #374151;
}

.charts-section .chart-controls {
    display: flex;
    gap: 5px;
}

.charts-section .chart-btn {
    padding: 6px 12px;
    border: 1px solid #d1d5db;
    background: white;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.charts-section .chart-btn:hover {
    background: #f3f4f6;
}

.charts-section .chart-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.charts-section .chart-container {
    padding: 20px;
    position: relative;
}

/* Légende du donut améliorée */
.donut-legend {
    margin-top: 15px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

/* Heatmap améliorée */
.heatmap-container {
    padding: 20px;
}

.heatmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.heatmap-cell {
    padding: 20px 15px;
    border-radius: 12px;
    text-align: center;
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.heatmap-cell::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.heatmap-cell:hover::before {
    left: 100%;
}

.heatmap-cell:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.heatmap-cell.high {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #ffffff; /* Blanc pour contraste sur fond vert foncé */
}

.heatmap-cell.medium {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #ffffff; /* Blanc pour contraste sur fond orange foncé */
}

.heatmap-cell.low {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #ffffff; /* Blanc pour contraste sur fond rouge foncé */
}

.cell-label {
    display: block;
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.cell-value {
    display: block;
    font-size: 0.8rem;
    opacity: 0.9;
}

.heatmap-scale {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-size: 0.9rem;
    color: #718096;
}

.scale-gradient {
    width: 200px;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(90deg, #ef4444, #f59e0b, #10b981);
}

/* Alertes améliorées */
.alerts-section {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e2e8f0;
}

.alerts-section h5 {
    margin: 0 0 20px 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: #374151;
}

.alerts-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.alert-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border-radius: 10px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.alert-item:hover {
    transform: translateX(5px);
}

.alert-item.success {
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid #10b981;
    color: #065f46; /* Vert très foncé pour lisibilité */
}

.alert-item.warning {
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid #f59e0b;
    color: #92400e; /* Orange très foncé pour lisibilité */
}

.alert-item.info {
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid #3b82f6;
    color: #1e40af;
}

.alert-item i {
    font-size: 1.2rem;
}

.alert-time {
    margin-left: auto;
    font-size: 0.8rem;
    opacity: 0.7;
}

/* Nouvelles sections - Layout optimisé */

/* Section Modération IA - Pleine largeur */
.ai-moderation-section {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 40px;
}

.feature-card.full-width {
    width: 100%;
    grid-column: 1 / -1;
}

.feature-header {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 20px;
}

.feature-title h3 {
    margin: 0 0 10px 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.feature-title p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.feature-details {
    margin-top: 20px;
}

.feature-details .feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 10px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-details .feature-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.feature-details .feature-list i {
    color: var(--success-color);
    font-size: 0.9rem;
}

/* Nouvelles sections Analytics, Dashboard et Gamification en pleine largeur */
.analytics-advanced-section,
.dashboard-analytics-section,
.gamification-section {
    width: 100%;
    margin-bottom: 3rem;
}

.analytics-advanced-section .feature-card,
.dashboard-analytics-section .analytics-dashboard,
.gamification-section .feature-card {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.2);
    color: #ffffff; /* Blanc pur plus fort */
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3); /* Ombre pour améliorer le contraste */
}

/* Textes spécifiques dans les sections colorées */
.analytics-advanced-section .feature-title p,
.gamification-section .feature-title p,
.dashboard-analytics-section h3 {
    color: #ffffff !important;
    font-weight: 500; /* Un peu plus épais */
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4); /* Ombre plus forte pour les descriptions */
}

.analytics-advanced-section .feature-title h3,
.gamification-section .feature-title h3 {
    color: #ffffff !important;
    font-weight: 700; /* Plus épais pour les titres */
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.analytics-advanced-section .feature-card.full-width,
.gamification-section .feature-card.full-width {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.analytics-advanced-section .feature-header,
.gamification-section .feature-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.analytics-advanced-section .feature-icon,
.gamification-section .feature-icon {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 1rem;
    font-size: 2rem;
    backdrop-filter: blur(10px);
}

.analytics-advanced-section .feature-title h3,
.gamification-section .feature-title h3 {
    font-size: 1.8rem;
    margin: 0 0 0.5rem 0;
    font-weight: 700; /* Plus épais */
    color: #ffffff !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.analytics-advanced-section .feature-title p,
.gamification-section .feature-title p {
    margin: 0;
    opacity: 1; /* Contraste maximum */
    font-size: 1.1rem;
    font-weight: 500; /* Un peu plus épais */
    color: #ffffff !important;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.analytics-advanced-section .feature-details,
.gamification-section .feature-details {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    align-items: start;
}

/* Dashboard Analytics - Section dédiée */
.dashboard-analytics-section .analytics-dashboard {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

.dashboard-analytics-section h3 {
    font-size: 1.8rem;
    margin: 0 0 2rem 0;
    text-align: center;
    font-weight: 600;
}

/* Dashboard Container - Pleine largeur */
.dashboard-analytics-section .dashboard-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.dashboard-analytics-section .analytics-dashboard.full-width {
    width: 100%;
}

.analytics-column .dashboard-container {
    padding: 20px;
}

/* Ajustements pour les métriques Analytics */
.analytics-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin: 20px 0;
}

.metric-item {
    text-align: center;
    padding: 15px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

/* Métriques dans les sections colorées - Contraste amélioré */
.analytics-advanced-section .metric-item,
.gamification-section .metric-item {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.analytics-advanced-section .metric-number,
.gamification-section .metric-number {
    color: #ffffff !important;
    font-weight: 800; /* Extra épais pour les chiffres */
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.analytics-advanced-section .metric-desc,
.gamification-section .metric-desc {
    color: rgba(255, 255, 255, 0.95) !important;
    font-weight: 600; /* Plus épais */
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.metric-number {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.metric-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Styles pour la gamification */
.gamification-stats {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 20px 0;
}

.game-stat {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

/* Stats de gamification dans les sections colorées */
.gamification-section .game-stat {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.gamification-section .stat-icon {
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.gamification-section .stat-text {
    color: #ffffff !important;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.stat-icon {
    font-size: 1.5rem;
}

.stat-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Responsive pour les nouvelles colonnes */
@media (max-width: 1024px) {
    .analytics-grid-section {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .analytics-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .analytics-column {
        gap: 20px;
    }
    
    .analytics-metrics {
        grid-template-columns: 1fr;
    }
    
    .gamification-stats {
        gap: 10px;
    }
}

/* Responsive pour les nouvelles sections pleine largeur */
@media (max-width: 1024px) {
    .analytics-advanced-section .feature-details,
    .gamification-section .feature-details {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .analytics-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .analytics-advanced-section,
    .dashboard-analytics-section,
    .gamification-section {
        margin-bottom: 2rem;
    }
    
    .analytics-advanced-section .feature-card,
    .dashboard-analytics-section .analytics-dashboard,
    .gamification-section .feature-card {
        padding: 1.5rem;
    }
    
    .analytics-advanced-section .feature-header,
    .gamification-section .feature-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .analytics-advanced-section .feature-title h3,
    .gamification-section .feature-title h3,
    .dashboard-analytics-section h3 {
        font-size: 1.4rem;
    }
    
    .analytics-metrics {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .gamification-stats {
        gap: 0.75rem;
    }
}

/* Responsive pour dashboard grid optimisé */
@media (max-width: 768px) {
    .charts-section .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .metrics-section .metrics-row {
        grid-template-columns: 1fr;
    }
    
    .heatmap-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .donut-legend {
        grid-template-columns: 1fr;
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Scroll animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease-out;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Utility classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-lg { margin-top: var(--spacing-lg); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.my-lg { margin: var(--spacing-lg) 0; }

.p-lg { padding: var(--spacing-lg); }
.px-lg { padding: 0 var(--spacing-lg); }
.py-lg { padding: var(--spacing-lg) 0; }

.bg-primary { background: var(--bg-primary); }
.bg-secondary { background: var(--bg-secondary); }
.bg-gradient { background: var(--bg-gradient); }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

.border-radius { border-radius: var(--border-radius); }
.border-radius-lg { border-radius: var(--border-radius-lg); }

.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Navigation highlight effect */
.section-highlight {
    background: rgba(102, 126, 234, 0.1) !important;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

/* Règles générales de contraste pour éviter les problèmes de lisibilité */

/* Amélioration générale du contraste des textes */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary) !important;
    font-weight: 700; /* Plus épais pour tous les titres */
}

/* Textes de description plus contrastés */
p, span, div {
    color: var(--text-primary);
}

/* Textes secondaires plus foncés */
.text-secondary, 
.feature-desc,
.section-subtitle {
    color: var(--text-secondary) !important;
    font-weight: 500; /* Un peu plus épais */
}

/* Textes atténués mais encore lisibles */
.text-muted,
.meta-info,
.timestamp {
    color: var(--text-muted) !important;
    font-weight: 500;
}

/* Éléments avec fond coloré foncé doivent avoir du texte clair */
.bg-success, .bg-success-dark, 
.bg-warning, .bg-warning-dark,
.bg-error, .bg-error-dark {
    color: var(--text-inverse) !important;
}

/* Éléments avec fond coloré clair doivent avoir du texte foncé */
.bg-success-light, .bg-warning-light, .bg-error-light {
    color: var(--text-primary) !important;
}

/* Status indicators avec contraste optimal */
.status-success { 
    background: var(--success-color); 
    color: var(--text-inverse); 
}

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

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

/* Règle globale pour tous les textes dans les sections colorées */
.analytics-advanced-section *, 
.dashboard-analytics-section *,
.gamification-section * {
    color: inherit; /* Hérite de la couleur du parent */
}

.analytics-advanced-section,
.dashboard-analytics-section,
.gamification-section {
    /* Force tous les textes à être blancs dans ces sections */
    color: #ffffff !important;
}

/* Exceptions Engagement: boutons de période lisibles (texte sombre) */
.dashboard-analytics-section .chart-widget.engagement .chart-header .chart-btn {
    background: #edf2f7 !important;
    color: #1a202c !important;
    border-color: #cbd5e1 !important;
}
.dashboard-analytics-section .chart-widget.engagement .chart-header .chart-btn:hover {
    background: #e5e7eb !important;
    color: #1a202c !important;
}
.dashboard-analytics-section .chart-widget.engagement .chart-header .chart-btn.active {
    background: #e0e7ff !important;
    color: #1a202c !important;
    border-color: #667eea !important;
}

/* Exceptions pour les éléments qui ont besoin de couleurs spécifiques */
.analytics-advanced-section .metric-number,
.analytics-advanced-section .feature-title h3,
.gamification-section .metric-number,
.gamification-section .feature-title h3,
.dashboard-analytics-section h3 {
    color: #ffffff !important;
    font-weight: 800 !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5) !important;
}

/* Amélioration du bouton Explorer Architecture */
#explore-architecture-btn {
    position: relative;
    overflow: hidden;
}

#explore-architecture-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

#explore-architecture-btn:hover::before {
    left: 100%;
}

/* Print styles */
@media print {
    .navbar,
    .hero-scroll,
    .btn,
    .nav-toggle {
        display: none;
    }
    
    .hero {
        padding-top: var(--spacing-xl);
        background: white;
        color: black;
    }
    
    .section {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}

/* Force tout le texte en noir foncé */
.chart-container svg text,
.chart-widget svg text,
svg text,
.chart-content text,
.chart-content span,
.chart-content div,
.heatmap-label,
.axis-label,
.chart-label,
.metric-title,
.period-selector span,
.period-selector div,
.chart-btn,
.heatmap-container .category-label,
.heatmap-container .day-label {
    fill: #1a1a1a !important;
    color: #1a1a1a !important;
}

/* Force les textes des métriques et titres - SANS affecter les backgrounds */
.dashboard-analytics-section h1,
.dashboard-analytics-section h2,
.dashboard-analytics-section h3,
.dashboard-analytics-section h4,
.dashboard-analytics-section h5,
.dashboard-analytics-section h6,
.dashboard-analytics-section p,
.dashboard-analytics-section span,
.dashboard-analytics-section div:not(.chart-widget):not(.legend-color):not(.level-bar):not(.sentiment-positive):not(.sentiment-neutral):not(.sentiment-negative),
.analytics-advanced-section h1,
.analytics-advanced-section h2,
.analytics-advanced-section h3,
.analytics-advanced-section h4,
.analytics-advanced-section h5,
.analytics-advanced-section h6,
.analytics-advanced-section p,
.analytics-advanced-section span,
.analytics-advanced-section div:not(.chart-widget):not(.legend-color):not(.level-bar):not(.sentiment-positive):not(.sentiment-neutral):not(.sentiment-negative),
.gamification-section h1,
.gamification-section h2,
.gamification-section h3,
.gamification-section h4,
.gamification-section h5,
.gamification-section h6,
.gamification-section p,
.gamification-section span,
.gamification-section div:not(.chart-widget):not(.legend-color):not(.level-bar):not(.sentiment-positive):not(.sentiment-neutral):not(.sentiment-negative),
.charts-section h1,
.charts-section h2,
.charts-section h3,
.charts-section h4,
.charts-section h5,
.charts-section h6,
.charts-section p,
.charts-section span,
.charts-section div:not(.chart-widget):not(.legend-color):not(.level-bar):not(.sentiment-positive):not(.sentiment-neutral):not(.sentiment-negative),
.metrics-section h1,
.metrics-section h2,
.metrics-section h3,
.metrics-section h4,
.metrics-section h5,
.metrics-section h6,
.metrics-section p,
.metrics-section span,
.metrics-section div:not(.chart-widget):not(.legend-color):not(.level-bar):not(.sentiment-positive):not(.sentiment-neutral):not(.sentiment-negative),
.heatmap-container h1,
.heatmap-container h2,
.heatmap-container h3,
.heatmap-container h4,
.heatmap-container h5,
.heatmap-container h6,
.heatmap-container p,
.heatmap-container span,
.heatmap-container div:not(.chart-widget):not(.legend-color):not(.level-bar):not(.sentiment-positive):not(.sentiment-neutral):not(.sentiment-negative) {
    color: #1a1a1a !important;
}

/* Assurer que les chart-widgets gardent leur background blanc */
.charts-section .chart-widget {
    background: white !important;
}

/* Exception explicite pour les backgrounds et éléments visuels */
.legend-color,
.metric-icon,
.chart-container svg path,
.chart-container svg rect,
.chart-container svg circle,
.sentiment-positive,
.sentiment-neutral,
.sentiment-negative,
.chart-widget,
.donut-segment {
    background: initial !important;
}

/* Forcer le gradient pour les barres de progression */
.level-bar {
    background: var(--bg-gradient) !important;
}

/* Forcer les gradients pour les barres de sentiment */
.sentiment-positive {
    background: linear-gradient(90deg, #10b981, #34d399) !important;
}

.sentiment-neutral {
    background: linear-gradient(90deg, #f59e0b, #fbbf24) !important;
}

.sentiment-negative {
    background: linear-gradient(90deg, #ef4444, #f87171) !important;
}