/* Ustawienie czcionki */
body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    background: linear-gradient(135deg, #00c6ff, #0072ff);
    color: #333;
}

/* Kontener w Grid */
.container {
    display: grid;
    grid-template-areas:
        "header header header"
        "nav main aside"
        "footer footer footer";
    grid-template-columns: 250px 1fr 250px;
    gap: 20px;
    padding: 20px;
}

/* Podstawowe style boxów */
header, nav, main, aside, footer {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.12);
}

/* Pozycje w gridzie */
header { grid-area: header; }
nav { grid-area: nav; }
main { grid-area: main; }
aside { grid-area: aside; }
footer { grid-area: footer; }

/* Linki */
nav a {
    color: #0072ff;
    text-decoration: none;
    font-weight: 600;
}

nav a:hover {
    text-decoration: underline;
}

/* Kolumny w main */
main {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

main section {
    background: #f7f9fc;
    border-radius: 10px;
    padding: 15px;
    transition: transform .2s;
}

main section:hover {
    transform: translateY(-4px);
}

/* Nagłówki */
h1, h2 {
    color: #0072ff;
}