/* header.css */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background: #1f1f1f;
    padding: 0 0px; /* moins de padding vertical pour mieux centrer */
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between; /* espace entre titre et nav */
}

.top-nav {
    display: flex;
    gap: 15px;
}

.top-nav a {
    font-size: 14px;
    font-weight: bold;
    color: #e0e0e0;
    text-decoration: none;
    transition: color 0.3s, background 0.3s;
    padding: 5px 8px;
    border-radius: 4px;
}

.top-nav a:hover {
    color: #000;
    background: #00bfff;
}