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

body {
    padding: 0;
    color: white;
    background: #0f172a;
}

main {
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
}

#container {
    width: 100%;
    margin: auto;
}

#whoIs {
    background: linear-gradient(135deg, #e0f7fa, #f1f8e9); /* pastelowy gradient */
    padding: 40px 10px 5px 20px;
    text-align: center;
    border-bottom: 1px solid #cfd8dc;
    font-size: 50%;
}

section {
    width: 80%;
    margin: 10px 0;
}

a:link {
    text-decoration: none;
}

h1, h4 {
    text-align: center;
    margin: 20px auto;
    text-shadow: 1px 1px 1px black, 1px 1px 1px black;
}


.btn {
    background-color: white;
    background-image: linear-gradient(to right, #0f172a, #fff, #fff, #fff, #fff, #fff, #fff, #fff, #fff, #0f172a);
    color: #0f172a; /* tekst w kolorze tła strony */
    border-radius: 8px;
    padding: 20px;
    font-size: 1em;
    width: 10%;
    margin: 5px auto;
    display: inline-block;
}

.btnNow {
}

.btn:hover {
    background-image: linear-gradient(to right, #0f172a, #fff, #fff, #fff, #0f172a);
}

.choice {
    width: 100%;
    text-align: center;
}


/* Responsywny nagłówek - POCZĄTEK */

.edu-header {
    /* background: linear-gradient(135deg, #e0f7fa, #f1f8e9); /* pastelowy gradient */

    background: linear-gradient(135deg, #abcabc, #0f172a, #0f172a, #0f172a, #0f172a);
    padding: 50px 20px;
    text-align: center;
    border-bottom: 1px solid #cfd8dc;
}

.edu-container {
    width: 100%;
}

.edu-title {
    font-size: clamp(1rem, 3vw, 2.5rem);
    font-weight: 800;
    letter-spacing: 0.2em;
    margin: 0;
}

.edu-subtitle {
    font-size: 1rem;
    color: #737373;
    font-family: 'Segoe UI', sans-serif;
}


/* Nawigacja serwisu - POCZĄTEK */

nav {
    position: fixed;
    width: 20%;
    text-align: center;
    margin: 0;
    top: 30%;
    right: 0;
}

    nav .soft-button {
        width: 95%;
        display: block;
        margin: 5px;
        height: 12vh;
        border-radius: 5%;
        transform: skewX(0deg);
    }

/* Nawigacja serwisu - KONIEC */


.button {
    display: inline-block;
    padding: 10px 16px;
    margin: 3px 5px;
    background-color: #2563eb; /* niebieski akcent */
    color: #fff;
    font-weight: bold;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

    .button:hover {
        background-color: #1e40af; /* ciemniejszy niebieski */
    }

    .button.disabled {
        background-color: #9ca3af; /* szary dla nieaktywnych */
        cursor: not-allowed;
    }

.buttons {
    display: flex;
    justify-content: space-evenly;
}

a:link {
    text-decoration: none;
}

h1 {
    color: #fff;
}

hr {
    border-top: 1px white solid;
}

h6 {
    text-align: left;
}

.content {
    padding: 20px 50px;
    width: 80%;
    margin: auto;
}

.teoria .btnW3, .practice .btnW3 {
    background-color: white;
    background-image: linear-gradient(to right, black, #fff, #fff, #fff, #fff, #fff, #fff, #fff, #fff, black);
    color: #0f172a; /* tekst w kolorze tła strony */
    border-radius: 8px;
    padding: 15px;
    font-size: 1em;
    margin: 5px auto;
    display: inline-block;
    width: 90%;
    text-align: center;
}

    .teoria .btnW3:hover, .practice .btnW3:hover {
        background-image: linear-gradient(to right, black, #fff, #fff, #fff, #fff, #fff, black);
    }

    .practice, .teoria {
        width: 100%;
        text-align: center;
    }