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

:root {
    --primary-blue: #1e3a8a;
    --primary-gold: #d4af37;
    --dark-navy: #0f172a;
    --light-blue: #3b82f6;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --background: #ffffff;
    --surface: #f8fafc;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--background);
    overflow-x: hidden;
}

/* Top Navigation Bar */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(30, 58, 138, 0.1);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.top-nav.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo-container img {
    height: 45px;
    width: auto;
    transition: transform 0.3s ease;
}

.logo-container img:hover {
    transform: scale(1.05);
}

.top-auth-bar {
    display: flex;
    gap: 12px;
    align-items: center;
    position: relative;
    top: auto;
}

.btn-auth {
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.95em;
    font-family: inherit;
    font-weight: 600;
    border: 2px solid transparent;
    outline: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.btn-auth-login {
    background: transparent;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.btn-auth-login:hover {
    background: var(--primary-blue);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3);
}

.btn-auth-signup {
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(30, 58, 138, 0.3);
}

.btn-auth-signup:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 58, 138, 0.4);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #3b82f6 100%);
    padding: 8rem 2rem 4rem;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    animation: fadeInUp 1s ease-out;
}

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

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    color: white;
    font-size: 0.9em;
    font-weight: 500;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--primary-gold), #fbbf24);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    line-height: 1.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-hero {
    padding: 18px 40px;
    border-radius: 50px;
    font-size: 1.1em;
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-hero-primary {
    background: white;
    color: var(--primary-blue);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.btn-hero-secondary {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-hero-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
}

/* Sections */
.section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-navy);
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-gold));
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.15rem;
    color: var(--text-light);
    margin-bottom: 4rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Feature Cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

/* SEO links section (Home) */
.seo-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.25rem;
    margin-top: 2.5rem;
}

.seo-link-card {
    display: block;
    text-decoration: none;
    color: inherit;
}

.seo-link-card .feature-icon {
    font-size: 2.5rem;
}

.seo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 1.25rem;
}

.seo-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    background: #ffffff;
    border: 1px solid rgba(30, 58, 138, 0.12);
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
}

.seo-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(30, 58, 138, 0.12);
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    border: 1px solid rgba(30, 58, 138, 0.1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-gold));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(30, 58, 138, 0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
}

.feature-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark-navy);
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Audience Cards */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.audience-card {
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    padding: 2rem;
    border-radius: 20px;
    color: white;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.audience-card::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%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.audience-card:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 40px rgba(30, 58, 138, 0.3);
}

.audience-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.audience-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.audience-card p {
    opacity: 0.9;
    font-size: 0.95rem;
}

/* Value Proposition Section */
.value-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 100%);
    padding: 5rem 2rem;
    position: relative;
}

.value-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-gold), transparent);
}

.value-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.15rem;
    line-height: 1.9;
    color: var(--text-dark);
}

.value-content strong {
    color: var(--primary-blue);
    font-weight: 700;
}

/* Comparison Table */
.comparison-section {
    background: var(--surface);
}

.comparison-table {
    width: 100%;
    max-width: 900px;
    margin: 3rem auto 0;
    border-collapse: separate;
    border-spacing: 0;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.comparison-table thead {
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    color: white;
}

.comparison-table th {
    padding: 1.5rem;
    font-weight: 600;
    text-align: left;
    font-size: 1.1rem;
}

.comparison-table td {
    padding: 1.2rem 1.5rem;
    background: white;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.comparison-table tbody tr:hover {
    background: rgba(30, 58, 138, 0.02);
}

.comparison-table td:first-child {
    font-weight: 600;
    color: var(--dark-navy);
}

.cta-below-table {
    text-align: center;
    margin-top: 3rem;
}

.cta-text {
    font-size: 1rem;
    color: var(--text-light);
    margin-top: 1rem;
}

/* Testimonials */
.testimonials-section {
    background: white;
}

.testimonials-container {
    position: relative;
    max-width: 1000px;
    margin: 3rem auto 0;
    overflow: hidden;
}

.testimonials-slider {
    display: flex;
    transition: transform 0.8s ease-in-out;
}

.testimonials-slide {
    min-width: 100%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: linear-gradient(135deg, #f8fafc, #e0f2fe);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    position: relative;
    border-left: 4px solid var(--primary-gold);
    transition: transform 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(30, 58, 138, 0.12);
}

.stars {
    color: var(--primary-gold);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.testimonial-author {
    font-weight: 600;
    color: var(--primary-blue);
}

.testimonials-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 2rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(30, 58, 138, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: var(--primary-blue);
    transform: scale(1.2);
}

@media (max-width: 768px) {
    .testimonials-slide {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .testimonial-card {
        padding: 2rem;
    }
}

/* FAQ Section */
.faq-section {
    background: var(--surface);
    padding: 5rem 2rem;
}

.faq-container {
    max-width: 800px;
    margin: 3rem auto 0;
}

.faq-item {
    background: white;
    border-radius: 15px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 6px 20px rgba(30, 58, 138, 0.1);
}

.faq-question {
    width: 100%;
    padding: 1.5rem 2rem;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-navy);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
    transition: color 0.3s ease;
}

.faq-question:hover {
    color: var(--primary-blue);
}

.faq-icon {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
    color: var(--primary-blue);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 2rem;
    color: var(--text-light);
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 2rem 1.5rem 2rem;
}

/* Final CTA */
.cta-section {
    background: linear-gradient(135deg, var(--dark-navy), var(--primary-blue));
    padding: 5rem 2rem;
    text-align: center;
    color: white;
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.cta-section p {
    font-size: 1.15rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Footer */
footer {
    background: var(--dark-navy);
    color: rgba(255, 255, 255, 0.7);
    padding: 2rem;
    text-align: center;
    font-size: 0.9rem;
}

footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .top-nav {
        padding: 1rem;
    }
    
    .logo-container img {
        height: 35px;
    }
    
    .btn-auth {
        padding: 8px 16px;
        font-size: 0.85em;
    }
    
    .btn-auth-signup {
        display: none;
    }
    
    .hero {
        padding: 6rem 1rem 3rem;
        min-height: auto;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn-hero {
        width: 100%;
        justify-content: center;
        padding: 15px 30px;
        font-size: 1em;
    }
    
    .section {
        padding: 3rem 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .features-grid,
    .audience-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-table {
        font-size: 0.9rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 1rem;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-question {
        font-size: 1rem;
        padding: 1.2rem 1.5rem;
    }
    
    .cta-section h2 {
        font-size: 1.8rem;
    }
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Data Sources Section */
.data-sources-section {
    background: var(--dark-navy);
    color: white;
    position: relative;
    overflow: hidden;
    /* Pour s'assurer qu'elle prend toute la largeur si insérée hors du conteneur .section standard */
    max-width: 100% !important; 
    padding: 5rem 2rem;
}

/* Ajustement du titre pour le fond sombre */
.data-sources-section .section-title {
    color: white;
}

.data-sources-section .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 3rem auto 0;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: transform 0.3s ease, background 0.3s ease;
    backdrop-filter: blur(10px);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-gold);
}

.stat-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 15px rgba(255, 255, 255, 0.2));
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, white, var(--light-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    font-family: 'Inter', sans-serif;
}

.stat-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-gold);
}

.stat-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    line-height: 1.6;
}

.stat-card strong {
    color: white;
}

/* Domains Cloud */
.domains-container {
    max-width: 900px;
    margin: 4rem auto 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 3rem;
}

.domains-label {
    margin-bottom: 1.5rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
}

.domain-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.domain-tag {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.2s ease;
    cursor: default;
}

.domain-tag:hover {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    transform: scale(1.05);
}

/* Responsive */
@media (max-width: 768px) {
    .stat-number {
        font-size: 2rem;
    }
    
    .domain-tag {
        font-size: 0.85rem;
        padding: 6px 14px;
    }
}