body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    background: #004466;
    color: white;
    padding: 1em;
    text-align: center;
}

nav a {
    color: white;
    margin: 0 1em;
    text-decoration: none;
}

main {
    padding: 2em;
}

section {
    margin-bottom: 2em;
}

footer {
    background: #eee;
    text-align: center;
    padding: 1em;
}

.footer-link {
    color: inherit;
}

/* Alap navigáció */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #004466;
    color: white;
    padding: 10px 20px;
    flex-wrap: wrap;
}

.navbar .logo {
    font-weight: bold;
    font-size: 18px;
}

.navbar .menu-toggle {
    background: none;
    border: none;
    color: white;
    font-size: 28px;
    display: none;
    cursor: pointer;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 15px;
    margin: 0;
    padding: 0;
}

.nav-links li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

/* Galéria */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 15px;
    padding: 20px;
}

.gallery img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: transform 0.2s;
}

.gallery img:hover {
    transform: scale(1.05);
}

/* LIGHTBOX */
.lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.92);
    justify-content: center;
    align-items: center;
}

.lightbox-content {
    display: block;
    max-width: 85vw;
    max-height: 85vh;
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 0 25px black;
    padding: 40px;
}



.close {
    position: absolute;
    top: 25px;
    right: 40px;
    color: white;
    font-size: 45px;
    cursor: pointer;
}

.prev,
.next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 60px;
    cursor: pointer;
    padding: 20px;
    user-select: none;
}

.prev {
    left: 20px;
}

.next {
    right: 20px;
}

.prev:hover,
.next:hover,
.close:hover {
    color: #ccc;
}

.btn {
    display: inline-block;
    margin-left: 10px;
    padding: 6px 14px;
    background-color: #004466;
    color: #ffffff;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid #004466;
}

.btn:hover {
    background-color: #006080;
    border-color: #006080;
}

#backToTop {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #004466;
    color: white;
    border: none;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    z-index: 1000;
}

/* Mobilnézet */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .navbar .menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        margin-top: 10px;
    }

    .nav-links li {
        padding: 8px 0;
    }

    .nav-links.active {
        display: flex;
    }
}