* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

body {
    background-color: #f4f6fa;
    color: #222;
}

/* Nagłówek */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background-color: #222;
    color: white;
}

header .logo {
    font-size: 1.5em;
    font-weight: bold;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

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

/* Sekcja główna */
.hero {
    text-align: center;
    background-color: #e6eefc;
    padding: 40px;
}

.hero img {
    width: 100%;
    max-width: 900px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
    margin-bottom: 20px;
}

/* Sekcja badań */
.badania {
    text-align: center;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 60px 20px;
    background-color: white;
}

.badania h2 {
    text-align: center;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    color: #063970;
    margin-bottom: 30px;
    gap: 30px;
}

.karty {
    text-align: center;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.karta {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 25px;
    background-color: #f8f9fc;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    width: 400px;
    padding: 25px;
    transition: transform 0.3s;
}

.karta:hover {
    transform: translateY(-5px);
}

.karta img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 15px;
}

/* Formularz */
.contact {
    background-color: #e6eefc;
    padding: 50px 20px;
    text-align: center;
}

form {
    display: flex;
    flex-direction: column;
    max-width: 600px;
    margin: 0 auto;
    gap: 15px;
}

input, textarea {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

button {
    background-color: #063970;
    color: white;
    border: none;
    padding: 10px;
    border-radius: 6px;
    cursor: pointer;
}

button:hover {
    background-color: #0a4a9a;
}

/* Stopka */
footer {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    background-color: #222;
    color: #ccc;
    padding: 20px 40px;
    font-size: 14px;
}

footer .right {
    text-align: right;
}

/* Responsywność */
@media (max-width: 768px) {
    header {
        flex-direction: column;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .karty {
        flex-direction: column;
        align-items: center;
    }

    footer {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}