body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
}

.header-div {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

header {
    color: #000;
    padding: 1.5% 0;
    text-align: center;
}

main {
    padding: 2% 4%;
    max-width: 60%;
    margin: 0 auto;
    box-shadow: 0 0.1em 0.3em rgba(0, 0, 0, 0.1);
}

ul {
    margin: 1em 0;
    padding-left: 1.5em;
}

footer {
    text-align: center;
    padding: 1.5% 0;
    color: #000;
    margin-top: 1em;
}

h1 {
    font-size: 2.5rem;
}

p {
    font-size: 1rem;
}

.copyright {
    text-align: center;
    margin: 1em 0;
    font-size: 0.9rem;
}

.footer-div {
    background: rgba(238, 238, 238, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    height: auto;
    padding: 15px 0;
    position: fixed;
    bottom: 0;
    width: 100%;
    z-index: 1000;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
}

    .footer-div p {
        width: 70%;
        margin: 0 auto;
        color: black;
        text-align: justify;
        font-size: 0.7em;
    }

/* ── Tablet (max 1024px) ── */
@media (max-width: 1024px) {
    main {
        max-width: 80%;
    }
}

/* ── Mobile (max 768px) ── */
@media (max-width: 768px) {
    body {
        /* Extra bottom padding so fixed footer doesn't overlap content */
        padding-bottom: 160px;
    }

    header {
        flex-direction: column;
        align-items: center;
        margin-top: 12vh !important; /* override inline style */
        padding: 4% 5%;
        gap: 10px;
    }

        header img {
            width: 80px !important;
        }

        header div {
            text-align: center;
        }

    h1 {
        font-size: 1.8rem;
        margin: 0.2em 0 0;
    }

    header p {
        font-size: 0.85rem;
        margin: 0;
    }

    main {
        max-width: 100%;
        padding: 4% 5%;
        box-shadow: none;
        /* Avoid being hidden under fixed footer */
        margin-bottom: 20px;
    }

        main p,
        main li {
            font-size: 0.95rem;
        }

    .copyright {
        font-size: 0.8rem;
        padding: 0 5%;
    }

    .footer-div {
        padding: 12px 0;
        /* Allow footer to grow in height on small screens */
        position: fixed;
        bottom: 0;
    }

        .footer-div p {
            width: 90%;
            font-size: 0.65em;
            text-align: left; /* justify can look poor on narrow screens */
            line-height: 1.5;
        }
}

/* ── Small Mobile (max 480px) ── */
@media (max-width: 480px) {
    body {
        padding-bottom: 200px;
    }

    h1 {
        font-size: 1.5rem;
    }

    main p,
    main li {
        font-size: 0.9rem;
    }

    .footer-div p {
        width: 92%;
        font-size: 0.6em;
    }
}