:root {
    --bg-color: #f4f4f4;
    --text-color: #000;
    --card-bg: #fff;
    --border-color: #ddd;
    --primary-color: #2980b9;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

.navbar {
    background-color: var(--primary-color);
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.navbar ul li {
    margin-right: 20px;
}

.navbar ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.navbar ul li a:hover {
    text-decoration: underline;
}

.theme-toggle {
    background-color: white;
    color: var(--primary-color);
    border: none;
    padding: 5px 10px;
    border-radius: 5px;
    cursor: pointer;
}

.container {
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.section-title {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    margin-bottom: 10px;
    padding-bottom: 5px;
}

footer {
    text-align: center;
    margin-top: 20px;
    font-size: 12px;
}

/* Mode sombre */
.dark-mode {
    --bg-color: #121212;
    --text-color: #fff;
    --card-bg: #1e1e1e;
    --border-color: #333;
    --primary-color: #ff5722;
}

.photo {
    border-radius: 50%;
    width: 100px; 
    height: 100px; 
    object-fit: cover; 
    border: 2px solid var(--primary-color); 
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1); 
}

.header {
    display: flex;
    justify-content: space-between; 
    align-items: center; 
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.header div:last-child {
    order: 2; 
}