* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: whitesmoke;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-image: url(images/background_UFO.png);
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center center;

}

header {
    background-color: rgb(48, 53, 48);
    color: rgb(0, 214, 29);
    padding: 0.4em 0;
    text-align: center;
    width: 100%;
}

header h1 {
    font-size: 1.5em;
    color: #000000;
    text-shadow: 0 0 6px #00ff66, 0 0 10px #00ff66;
    
}


header nav ul {
    list-style: none;
    padding: 0;
}

header nav ul li {
    display: inline;
    margin: 0 0.5em;
}

header nav ul li a {
    color: #00ff66;
    text-decoration: solid;
    font-weight: bold;
    font-size: 1em;
}


#intro {
    text-align: center;
    margin: 1em auto;
    color: rgb(255, 255, 255);
    font-weight: bold;
}

.page-viewer {
    text-align: center;
    margin: 1.5em auto;
    padding-bottom: 0;
    width: 80%;
}

.page-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin: 0px auto;
    position: relative;
    max-width: 100%;
}

.page-container img {
    max-width: 80vw;
    max-height: 90vh;
    border: 2px solid #ccc;
    border-radius: 8px;
}

.nav-button {
    background-color: #444;
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    padding: 0px;
    cursor: pointer;
    border-radius: 50% 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 1s ease;
}

.arrow {
    font-size: 30px;
}


.nav-button:hover {
    background-color: rgb(0, 214, 29);
    color: black;
    transform: scale(1.2);
    

}

.nav-button.left {
    margin-right: 10px;
}


.nav-button.right {
    margin-left: 10px;

}




footer {
    background-color:  rgb(48, 53, 48);
    color: rgb(0, 214, 29);
    text-align: center;
    
    width: 100%;
    margin-top: auto;
}


.pagination-wrapper {
    display: flex;
    justify-content: center;
    width: 100%;
}

.pagination {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    align-items: center;
    
    gap: 0.1px;
    
   max-width: 1000px;
   width: 100%;
    background-image: url(images/background_UFO.png);
    border-top: 1px solid #333;
    border-radius: 04px 07px 47px 51px;
    
  
    
}

.pagination a {
    color: #ffffff;
    text-decoration: none;
    padding: 6px 6px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
    font-weight: bold;
}

.pagination a:hover {
    background-color: #00ff66;
    color: #000;
}

.pagination a.active {
    background-color: rgb(48, 53, 48);
    color: #00ff66;
}

/* Media Queries pour la responsivité */
/* Tablettes */
@media screen and (max-width: 768px) {
    body {
        background-attachment: scroll;
    }

    header h1 {
        font-size: 1.2em;
    }

    header nav ul li {
        display: block;
        margin: 0.5em 0;
    }

    #intro h2 {
        font-size: 1.1em;
    }

    #intro p {
        font-size: 0.95em;
        padding: 0 0.5em;
    }

    .page-viewer {
        width: 95%;
        margin: 1em auto;
    }

    .page-viewer h2 {
        font-size: 1.1em;
    }

    .page-container {
        gap: 10px;
    }

    .nav-button {
        width: 44px;
        height: 44px;
        min-width: 44px;
        min-height: 44px;
    }

    .arrow {
        font-size: 22px;
    }

    .pagination {
        gap: 4px;
        padding: 8px;
    }

    .pagination a {
        padding: 8px 6px;
        font-size: 0.9em;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
}

/* Smartphones */
@media screen and (max-width: 480px) {
    header h1 {
        font-size: 1em;
    }

    header nav {
        padding: 0 0.5em;
    }

    #intro {
        margin: 0.75em auto;
        padding: 0 0.5em;
    }

    #intro h2 {
        font-size: 1em;
    }

    #intro p {
        font-size: 0.9em;
    }

    .page-container img {
        max-width: 90vw;
        max-height: 85vh;
    }

    .page-viewer h2 {
        font-size: 1em;
    }

    #theme-select {
        width: 100%;
        max-width: 280px;
        margin: 0.5em auto;
        display: block;
        padding: 8px;
        font-size: 1em;
    }

    .pagination-wrapper {
        padding: 0 0.5em;
    }

    .pagination {
        padding: 8px 4px;
        gap: 4px;
    }

    .pagination a {
        padding: 10px 6px;
        font-size: 0.8em;
        min-height: 44px;
        min-width: 36px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    footer p {
        font-size: 0.85em;
        padding: 0 0.5em;
    }
}

/* Amélioration de la sélection sur mobile */
@media (hover: none) {
    .nav-button:hover {
        transform: none;
    }
    
    .pagination a:hover {
        background-color: transparent;
    }
}