* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
}
body { 
    font-family: Arial, Helvetica, sans-serif; 
    background: #212121 no-repeat center top; 
    color: #cccccc; 
}

header { 
    background: linear-gradient(to bottom, #1f1f1f 0%, #000000 100%); 
    padding: 15px 0; 
    text-align: center; 
    box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.5); 
    border-bottom: 2px solid #333333; 
}
header img { 
    width: 400px; 
    height: auto; 
}

.container { 
    width: 960px; 
    margin: 40px auto; 
    padding: 20px; 
    background: rgba(0, 0, 0, 0.7); 
    border: 1px solid #333333; 
    border-radius: 10px; 
    box-shadow: 0px 10px 15px rgba(0, 0, 0, 0.6); 
}
.container p { 
    font-size: 16px; 
    line-height: 1.8; 
    color: #dddddd; 
}
.container a.btn { 
    display: inline-block; 
    padding: 12px 25px; 
    background: #2a2a8f; 
    color: #ffffff; 
    text-decoration: none; 
    border: 2px solid #4444aa; 
    border-radius: 5px; 
    text-transform: uppercase; 
    transition: background 0.3s; 
}
.container a.btn:hover { 
    background: #3b3bdb; 
    border-color: #6666cc; 
}

.books-container { 
    margin: 40px auto; 
    padding: 20px; 
    background: #2a2a2a; 
    border: 1px solid #444444; 
    border-radius: 10px; 
    box-shadow: 0px 8px 12px rgba(0, 0, 0, 0.6); 
}
.books-title { 
    font-size: 22px; 
    color: #ffffff; 
    text-shadow: 1px 1px 5px #000000; 
    padding: 10px; 
    border-radius: 5px; 
    text-align: center; 
  background: linear-gradient(135deg, #4a72b2, #295799); 

}

.book-title {
    font-size: 20px;
    font-weight: bold; 
    margin-bottom: 5px;
    color: #e6e6e6; 
    text-shadow: 1px 1px 4px #000000; 
    padding: 10px 0 5px 0; 
    border-bottom: 1px solid #444444;
}

.author-title {
    font-size: 12px;
    font-weight: bold; 
    color: #e6e6e6; 
    text-shadow: 1px 1px 4px #000000; 
    padding: 5px 0; 
}

.book-link { 
    display: block;  
    margin-top: 2px;
    color: #7bb7e6; 
    text-decoration: none; 
    font-size: 18px; 
}
.book-link:hover { 
    color: #ff8a32; 
    text-decoration: underline; 
}

footer { 
    background: #111111; 
    padding: 10px 0; 
    text-align: center; 
    border-top: 2px solid #444444; 
    color: #777777; 
    font-size: 12px; 
}
.footer p { 
    margin: 0; 
}

body::-webkit-scrollbar { 
    width: 12px; 
}
body::-webkit-scrollbar-thumb { 
    background: #444444; 
    border-radius: 6px; 
}
body::-webkit-scrollbar-thumb:hover { 
    background: #555555; 
}


@media (max-width: 960px) {
    .container {
        width: 90%;
    }
    header img {
        width: 80%; 
    }
    .books-title {
        font-size: 20px; 
    }
    .book-link{
        font-size: 16px;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 15px; 
    }
    header img {
        width: 100%;
    }
    .books-title {
        font-size: 18px; 
    }
    .book-link{
        font-size: 14px;
    }
}