/* Variables globales */
:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-secondary: #4f46e5;
    --color-accent: #ec4899;
    --color-background: #f8fafc;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
}

h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    line-height: 1.2;
    font-weight: 700;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

p {
    margin-bottom: 1.5rem;
}

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

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

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

ul {
    list-style: none;
}

/* Layout et conteneurs */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: 5rem 0;
}

/* Header et navigation */
.header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo-icon {
    margin-right: 0.75rem;
}

.main-nav ul {
    display: flex;
    gap: 1.5rem;
}

.main-nav a {
    font-weight: 500;
    color: var(--color-text);
    padding: 0.5rem;
}

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

/* Boutons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

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

/* Section Hero */
.hero {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    color: var(--color-white);
    padding: 5rem 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Sections Fonctionnalités */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background-color: var(--color-white);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.feature-icon {
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

/* Comment ça marche */
.how-it-works {
    background-color: #f1f5f9;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    background-color: var(--color-primary);
    color: var(--color-white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    margin: 0 auto 1.5rem;
}

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

.benefit-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.benefit-icon {
    margin-bottom: 1.5rem;
}

.benefit-item h3 {
    margin-bottom: 0.75rem;
    color: var(--color-primary);
}

/* Témoignages */
.testimonials {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.testimonial-slider {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 2rem;
}

.testimonial {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 2rem;
    flex: 1;
    min-width: 280px;
}

.quote {
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: 1rem;
}

.author {
    font-weight: 600;
    opacity: 0.8;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 2rem;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 1.5rem;
}

.faq-item h3 {
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    text-align: center;
    color: var(--color-white);
    padding: 4rem 0;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background-color: #1e293b;
    color: var(--color-white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: 400px;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    opacity: 0.7;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
}

.footer-column h4 {
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
}

.footer-column ul li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: var(--color-white);
    opacity: 0.7;
}

.footer-column a:hover {
    opacity: 1;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.7;
}

.related-terms {
    margin-top: 1rem;
}

.related-terms span {
    margin-right: 0.5rem;
}

.related-terms a {
    color: var(--color-white);
    margin: 0 0.5rem;
}

/* Media Queries pour responsive */
@media (max-width: 992px) {
    h1 {
        font-size: 2.25rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        margin: 0 auto;
    }
    
    .cta-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    section {
        padding: 3rem 0;
    }
    
    .header .container {
        flex-direction: column;
    }
    
    .main-nav {
        margin-top: 1rem;
    }
    
    .main-nav ul {
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-logo {
        margin: 0 auto;
        justify-content: center;
        text-align: center;
        flex-direction: column;
    }
    
    .footer-links {
        width: 100%;
        justify-content: space-around;
    }
}

@media (max-width: 576px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.75rem;
    }
    
    .feature-grid,
    .steps,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
}