body {
    font-family: 'Lato', sans-serif;
    background-image: url('../images/bg_background.png');
    color: #333;
}

header, footer {
    background: silver;
    background-image: url('../images/bg_header.png');
    padding: 20px;
    text-align: center;
    color: black;
    border: 1px solid grey;
    border-radius: 20px;
    margin: 20px;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 15px;
}

nav a {
    text-decoration: none;
    padding: 8px 16px;
    background: #dbeef3;
    border-radius: 6px;
}

li a {
  font-size: 25px;
  color: black;
   }


.banner img {
    width: 100%;
    height: auto;
    display: block;
}

main {
    background-image: url('../images/bg_main.png'); 
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,.1);
}


/* --- TRYB CIEMNY --- */
body.dark-mode {
    background: linear-gradient(135deg, #2C5364, #203A43, #0F2027);
    color: #eee;
}

body.dark-mode header,
body.dark-mode footer {
    background: #222;
    color: #eee;
    border-bottom: none;
}

body.dark-mode nav ul li a {
    color: #fff;
    background: #4CAF50;
}

body.dark-mode nav ul li a:hover,
body nav ul li a.current {
    background: #45a049;
}



body.dark-mode aside ol li a:hover {
    background: rgba(255,255,255,0.2);
}

body.dark-mode main {
    background: beige;
    color: #333;
    border: none;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

body.dark-mode footer p {
    color: #aaa;
}