/* Variables et reset */
:root {
    --primary: #2C3E50;
    --secondary: #3498DB;
    --accent: #2980B9;
    --light: #F5F7FA;
    --dark: #2C3E50;
    --success: #27AE60;
    --text: #333333;
    --text-light: #7F8C8D;
    --white: #FFFFFF;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--light);
    color: var(--text);
    line-height: 1.6;
}

/* Typographie */
h1, h2, h3, h4 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    position: relative;
    padding-bottom: 0.5rem;
}

h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--secondary);
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 5rem 0;
}

.section-light {
    background-color: var(--white);
}

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

.section-dark h2, .section-dark h3 {
    color: var(--white);
}

.section-dark h2:after {
    background-color: var(--white);
}

.section-dark p {
    color: rgba(255, 255, 255, 0.8);
}

/* Header et Navigation */
header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo span {
    color: var(--secondary);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--primary);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--secondary);
}

.cta-button {
    background-color: var(--secondary);
    color: var(--white);
    padding: 0.7rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background-color: var(--accent);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: 10rem 0 5rem;
    background: linear-gradient(135deg, var(--primary) 0%, #1a2530 100%);
    color: var(--white);
    text-align: center;
}

.hero h1 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

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

.secondary-button {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
    padding: 0.7rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.secondary-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

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

.feature-card {
    background-color: var(--white);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.feature-card h3, .feature-card p {
    color: #000;
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    background-color: rgba(52, 152, 219, 0.1);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    color: var(--secondary);
    font-size: 1.5rem;
}

/* Use Cases Section */
.use-cases {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.use-case {
    background-color: var(--white);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.use-case:hover {
    transform: translateY(-5px);
}

.use-case-icon {
    background-color: var(--primary);
    color: var(--white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

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

.testimonial {
    background-color: var(--white);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: var(--shadow);
    color:#000;
}

.testimonial-content {
    font-style: italic;
    margin-bottom: 1.5rem;
    color:#000;
}

.testimonial-author {
    display: flex;
    align-items: center;
    color:#000;
}
.testimonial-author h4, .testimonial-author p {
    color:#000;
}

.author-avatar {
    width: 50px;
    min-width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--light);
    margin-right: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
    font-weight: bold;
}

/* CTA Section */
.cta-section {
    text-align: center;
    padding: 4rem 0;
}

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

.cta-section p {
    max-width: 600px;
    margin: 0 auto 2rem;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-column h3 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.7rem;
    }

    .nav-links {
        display: none;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons a, .hero-buttons button {
        width: 100%;
        max-width: 250px;
        margin-bottom: 1rem;
    }
}