/* Reset CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

body {
    background-color: #fff;
    color: #2e2e2e;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header style */
header {
    background-color: #0596DE;
    padding: 8px 24px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: none;
    height: 80px;
    overflow: visible;
    justify-content: space-between;
}

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

.logo img {
    height: 100px;
    width: auto;
    display: block;
    filter: brightness(0) invert(1);
    margin-top: 10px;
    object-fit: contain;
    position: relative;
    z-index: 101;
}

/* Conteneur principal */
.container {
    max-width: 1200px;
    width: 90%;
    margin: 40px auto;
    padding: 0 15px;
}

/* Titres et textes */
h1 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #2b3847;
    font-weight: 600;
}

h2 {
    font-size: 24px;
    margin-bottom: 16px;
    color: #2b3847;
    font-weight: 600;
}

h3 {
    font-size: 20px;
    margin-bottom: 14px;
    color: #2b3847;
    font-weight: 600;
}

p {
    color: #5a6670;
    margin-bottom: 20px;
    line-height: 1.6;
}

/* Boutons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: #0596DE;
    color: white;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s, transform 0.2s;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn:hover {
    background-color: #0287c8;
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-primary {
    background-color: #0596DE;
}

.btn-success {
    background-color: #3dc18d;
}

/* Cartes et sections */
.card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid #f3f3f3;
    transition: transform 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

.hero-section {
    background-color: #f9fbfd;
    padding: 60px 0;
    margin-top: 20px;
    border-radius: 8px;
    text-align: center;
}

/* Grille */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.col {
    padding: 0 15px;
    flex: 1;
}

.col-50 {
    flex: 0 0 50%;
    max-width: 50%;
    padding: 0 15px;
}

.col-33 {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
    padding: 0 15px;
}

/* Menu de navigation */
.nav-links {
    display: flex;
    gap: 20px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* Images */
.img-responsive {
    max-width: 100%;
    height: auto;
    display: block;
}

.img-center {
    margin: 0 auto;
}

/* Responsive design */
@media (max-width: 992px) {
    .col-50, .col-33 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .hero-section {
        padding: 40px 0;
    }
}

@media (max-width: 768px) {
    header {
        padding: 8px 16px;
    }
    
    .container {
        width: 95%;
    }
    
    h1 {
        font-size: 28px;
    }
    
    h2 {
        font-size: 22px;
    }
    
    .btn-large {
        padding: 14px 28px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .logo img {
        height: 80px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    .card {
        padding: 20px;
    }
    
    .btn {
        padding: 10px 20px;
    }
}