/* ============================================
   DESIGN SYSTEM PREMIUM
   Booster Avis Google - SaaS Professionnel
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* Variables CSS - Design System */
:root {
    /* Couleurs primaires - Palette professionnelle */
    --primary-50: #f0f4ff;
    --primary-100: #e0e9ff;
    --primary-200: #c7d7fe;
    --primary-300: #a5b8fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;
    
    --primary: var(--primary-600);
    --primary-dark: var(--primary-700);
    --primary-light: var(--primary-400);
    
    /* Couleurs fonctionnelles */
    --success: #059669;
    --success-light: #10b981;
    --danger: #dc2626;
    --danger-light: #ef4444;
    --warning: #d97706;
    --info: #0284c7;
    
    /* Neutres - Palette sophistiquée */
    --neutral-50: #fafafa;
    --neutral-100: #f5f5f5;
    --neutral-200: #e5e5e5;
    --neutral-300: #d4d4d4;
    --neutral-400: #a3a3a3;
    --neutral-500: #737373;
    --neutral-600: #525252;
    --neutral-700: #404040;
    --neutral-800: #262626;
    --neutral-900: #171717;
    
    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f5f5f5;
    --bg-overlay: rgba(0, 0, 0, 0.4);
    
    /* Text */
    --text-primary: var(--neutral-900);
    --text-secondary: var(--neutral-600);
    --text-tertiary: var(--neutral-500);
    --text-muted: var(--neutral-400);
    --text-inverse: #ffffff;
    
    /* Borders */
    --border: var(--neutral-200);
    --border-light: var(--neutral-100);
    --border-dark: var(--neutral-300);
    
    /* Shadows - Système d'ombres raffiné */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-2xl: 0 32px 64px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
    
    /* Radius */
    --radius-sm: 6px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
    
    --text-xs: 0.75rem;    /* 12px */
    --text-sm: 0.875rem;   /* 14px */
    --text-base: 1rem;     /* 16px */
    --text-lg: 1.125rem;   /* 18px */
    --text-xl: 1.25rem;    /* 20px */
    --text-2xl: 1.5rem;    /* 24px */
    --text-3xl: 1.875rem;  /* 30px */
    --text-4xl: 2.25rem;   /* 36px */
    --text-5xl: 3rem;      /* 48px */
    --text-6xl: 3.75rem;   /* 60px */
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Dashboard – élargir la zone de contenu pour éviter l'effet "tout rikiki" */
.site-main .container {
    max-width: 1440px;
}

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

a:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

img,
svg {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-xl);
    }
}

/* Header - Design Premium */
.site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: var(--transition);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.site-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}

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

.logo a {
    font-weight: 800;
    font-size: var(--text-xl);
    letter-spacing: -0.02em;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    transition: var(--transition-fast);
}

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

.main-nav {
    display: flex;
    gap: var(--space-xs);
    align-items: center;
}

.main-nav a {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: var(--space-md);
    right: var(--space-md);
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.main-nav a:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.main-nav a.active {
    color: var(--primary);
    background: var(--primary-50);
}

.main-nav a.active::after {
    transform: scaleX(1);
}

.header-cta {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

/* Buttons - Design System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 600;
    font-family: inherit;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    line-height: 1.5;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-inverse);
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.4);
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::after {
    left: 100%;
}

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 8px 24px 0 rgba(99, 102, 241, 0.5);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-outline {
    border: 1.5px solid var(--border-dark);
    background: var(--bg-primary);
    color: var(--text-primary);
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

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

.btn-success {
    background: var(--success);
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
}

.btn-success:hover {
    background: var(--success-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger);
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
    background: var(--danger-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--text-base);
}

.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-xs);
}

/* Main Content */
.site-main {
    padding: var(--space-4xl) 0;
    min-height: calc(100vh - 200px);
}

/* Hero Section - Premium */
.hero {
    display: grid;
    gap: var(--space-4xl);
    align-items: center;
    margin-bottom: var(--space-4xl);
    padding: var(--space-2xl) 0;
}

.hero > div:first-child {
    animation: fadeInUp 0.8s ease-out;
}

.hero > div:last-child {
    animation: fadeInUp 1s ease-out;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    background: var(--primary-50);
    color: var(--primary);
    font-size: var(--text-xs);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid var(--primary-100);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: var(--space-xl);
    font-weight: 400;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.hero-note {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Sections */
.section {
    margin-top: var(--space-4xl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    margin-bottom: var(--space-xl);
    text-align: center;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    line-height: 1.2;
}

/* Cards - Design Premium */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    opacity: 0;
    transition: opacity var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-200);
    transform: translateY(-2px);
}

.card:hover::before {
    opacity: 1;
}

.card h2,
.card h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.card ul {
    list-style: none;
    padding-left: 0;
    margin: var(--space-lg) 0;
}

.card ul li {
    padding: var(--space-sm) 0;
    padding-left: var(--space-xl);
    position: relative;
    color: var(--text-secondary);
    line-height: 1.6;
}

.card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: var(--space-sm);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

/* Grid */
.grid {
    display: grid;
    gap: var(--space-xl);
}

/* Pricing - Premium */
.pricing-grid {
    display: grid;
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.pricing-card {
    position: relative;
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-lg);
    transform: scale(1.02);
}

.pricing-card.featured::after {
    content: 'Populaire';
    position: absolute;
    top: -12px;
    right: var(--space-xl);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--text-inverse);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 700;
    box-shadow: var(--shadow-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-card-title {
    font-weight: 700;
    font-size: var(--text-2xl);
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.pricing-price {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 900;
    margin: var(--space-lg) 0;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -0.03em;
}

.pricing-price span {
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--text-tertiary);
}

.pricing-features {
    list-style: none;
    padding-left: 0;
    margin: var(--space-xl) 0;
}

.pricing-features li {
    padding: var(--space-md) 0;
    padding-left: var(--space-xl);
    position: relative;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
    line-height: 1.6;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: var(--space-md);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--success-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pricing-features li::after {
    content: '✓';
    position: absolute;
    left: 5px;
    top: var(--space-md);
    color: white;
    font-size: 12px;
    font-weight: 700;
}

/* Auth Forms */
.auth-card {
    max-width: 480px;
    margin: var(--space-2xl) auto;
}

.auth-card h1 {
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: var(--space-sm);
    text-align: center;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.auth-card > p {
    text-align: center;
    color: var(--text-tertiary);
    margin-bottom: var(--space-xl);
}

/* Forms - Premium */
form label {
    display: block;
    font-size: var(--text-sm);
    margin-bottom: var(--space-sm);
    font-weight: 600;
    color: var(--text-primary);
}

form input,
form textarea,
form select {
    width: 100%;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1.5px solid var(--border);
    font-size: var(--text-base);
    margin-bottom: var(--space-lg);
    transition: var(--transition);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
}

form input:focus,
form textarea:focus,
form select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-100);
}

form input::placeholder,
form textarea::placeholder {
    color: var(--text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.error {
    color: var(--danger);
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
    padding: var(--space-md);
    background: rgba(220, 38, 38, 0.1);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--danger);
}

.success {
    color: var(--success);
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
    padding: var(--space-md);
    background: rgba(5, 150, 105, 0.1);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--success);
}

/* Dashboard - Premium */
.dashboard-header {
    margin-bottom: var(--space-2xl);
}

.dashboard-header h1 {
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.dashboard-header p {
    font-size: var(--text-lg);
    color: var(--text-tertiary);
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.stat-card {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.stat-card h3 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-card .stat-value {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.03em;
}

/* Footer - Premium Professionnel */
.site-footer {
    border-top: 2px solid var(--border);
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: var(--space-4xl) 0 var(--space-2xl);
    margin-top: var(--space-4xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--border);
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-links-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links-list li {
    margin: 0;
}

.footer-links-list a {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    text-decoration: none;
    transition: all 0.2s ease;
    display: inline-block;
}

.footer-links-list a:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    padding-top: var(--space-lg);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Review Page - Premium */
.review-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-lg);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.review-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.review-card {
    max-width: 560px;
    width: 100%;
    text-align: center;
    animation: fadeInUp 0.6s ease-out;
    position: relative;
    z-index: 1;
}

.review-card h1 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--text-inverse);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.review-card > p {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--space-xl);
    font-weight: 400;
}

.review-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.review-form {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    padding: var(--space-2xl);
    border-radius: var(--radius-2xl);
    margin-top: var(--space-xl);
    animation: fadeIn 0.4s ease-out;
    box-shadow: var(--shadow-2xl);
}

.review-form h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.review-form p {
    color: var(--text-tertiary);
    margin-bottom: var(--space-xl);
    font-size: var(--text-sm);
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Animations appliquées */
.hero > div:first-child {
    animation: fadeInUp 0.8s ease-out;
}

.hero > div:last-child {
    animation: fadeInUp 1s ease-out;
}

.card {
    animation: fadeInUp 0.6s ease-out backwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }

/* Effets hover améliorés */
.btn-primary:hover {
    animation: pulse 1s ease-in-out infinite;
}

.pricing-card.featured {
    animation: float 3s ease-in-out infinite;
}

/* Scroll animations */
@media (prefers-reduced-motion: no-preference) {
    .card,
    .pricing-card,
    .stat-card {
        transition: var(--transition);
    }
    
    .card:hover,
    .pricing-card:hover,
    .stat-card:hover {
        transform: translateY(-4px) scale(1.02);
    }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
    position: relative;
    width: 44px;
    height: 44px;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    transition: background 0.2s ease;
}

.mobile-menu-toggle:hover {
    background: var(--bg-tertiary);
}

.mobile-menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
    background: var(--primary);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
    background: var(--primary);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-nav-overlay.active {
    display: block;
    opacity: 1;
}

/* Responsive */
@media (max-width: 767px) {
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: #ffffff;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    }
    
    .header-inner {
        padding: 16px 20px;
        gap: 0;
        min-height: 64px;
        align-items: center;
    }
    
    .logo {
        flex: 0 0 auto;
        z-index: 1002;
    }
    
    .logo img {
        height: 38px;
        width: auto;
    }
    
    .mobile-menu-toggle {
        display: flex;
        margin-left: auto;
        z-index: 1002;
    }
    
    .main-nav {
        display: flex;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 8px 0;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        z-index: 1001;
        max-height: calc(100vh - 64px);
        overflow-y: auto;
        gap: 4px;
        transform: translateY(-100%);
        opacity: 0;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                    opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        -webkit-overflow-scrolling: touch;
    }
    
    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .main-nav a {
        padding: 16px 24px;
        border-radius: 0;
        margin: 0 12px;
        font-size: 16px;
        font-weight: 500;
        width: calc(100% - 24px);
        text-align: left;
        background: transparent;
        border-bottom: none;
        color: var(--text-primary);
        transition: all 0.2s ease;
        position: relative;
        border-radius: 10px;
    }
    
    .main-nav a::after {
        display: none;
    }
    
    .main-nav a::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 4px;
        height: 0;
        background: var(--primary);
        border-radius: 0 2px 2px 0;
        transition: height 0.2s ease;
    }
    
    .main-nav a:hover {
        background: var(--bg-tertiary);
        color: var(--primary);
        padding-left: 28px;
    }
    
    .main-nav a:hover::before {
        height: 24px;
    }
    
    .main-nav a.active {
        background: linear-gradient(90deg, var(--primary-50) 0%, rgba(99, 102, 241, 0.05) 100%);
        color: var(--primary);
        font-weight: 600;
        padding-left: 28px;
    }
    
    .main-nav a.active::before {
        height: 32px;
        background: var(--primary);
    }
    
    .header-cta {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        background: #ffffff;
        padding: 20px;
        padding-bottom: calc(20px + env(safe-area-inset-bottom));
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
        z-index: 1001;
        flex-direction: column;
        gap: 12px;
        border-top: 1px solid var(--border);
        transform: translateY(100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .main-nav.active ~ .header-cta,
    .header-cta.active {
        transform: translateY(0);
    }
    
    .header-cta .btn {
        width: 100%;
        justify-content: center;
        padding: 16px 24px;
        font-size: 16px;
        font-weight: 600;
        border-radius: 12px;
    }
    
    .header-cta .btn-primary {
        order: -1;
        box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
    }
    
    .header-cta .btn-outline {
        border: 2px solid var(--border);
    }
    
    body.menu-open {
        overflow: hidden;
        position: fixed;
        width: 100%;
    }
    
    .mobile-nav-overlay {
        display: block;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        z-index: 1000;
        opacity: 0;
        transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        pointer-events: none;
    }
    
    .mobile-nav-overlay.active {
        opacity: 1;
        pointer-events: all;
    }
    
    .site-main {
        padding: var(--space-xl) 0;
    }
    
    .section {
        margin-top: 0 !important;
    }
    
    .hero-section {
        padding: 60px 0 40px !important;
    }
    
    .roi-calculator-grid {
        grid-template-columns: 1fr !important;
        gap: var(--space-lg) !important;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .hero {
        text-align: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
}

@media (min-width: 768px) {
    .hero {
        grid-template-columns: 1.2fr 1fr;
    }
    
    .grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 1280px;
    }
}

/* Stats Bar */
.stats-bar {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--space-xl) 0;
    position: relative;
    overflow: hidden;
}

.stats-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.stats-bar > .container {
    position: relative;
    z-index: 1;
}

/* Testimonials */
.testimonial-card {
    transition: var(--transition);
    border: 1px solid var(--border);
}

.testimonial-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: var(--space-4xl) 0;
    border-radius: var(--radius-2xl);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

.cta-section > .container {
    position: relative;
    z-index: 1;
}

/* Benefits Cards */
.benefit-card {
    text-align: center;
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-6px);
}

.benefit-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    font-size: var(--text-3xl);
    transition: var(--transition);
}

.benefit-card:hover .benefit-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Guarantees Section */
.guarantees-section {
    background: var(--bg-secondary);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
}

.guarantee-item {
    text-align: center;
    transition: var(--transition);
}

.guarantee-item:hover {
    transform: translateY(-4px);
}

.guarantee-icon {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-sm);
    display: block;
}

/* Utilities */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }

.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    color: var(--primary);
}