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

body{
    background:#f3f3f3;
    color:#222;
}

/* ---------------- HERO / BANNER ---------------- */

.banner{
    height:280px;
    background:
    linear-gradient(
        to bottom,
        rgba(0,0,0,.65) 0%,
        rgba(0,0,0,.45) 35%,
        rgba(0,0,0,.20) 100%
    ),
    url("https://picsum.photos/seed/banner/1920/800") center/cover;
    position:relative;
}

/* ---------------- NAVIGATION ON BANNER ---------------- */

nav{
    width:100%;
    background:transparent;
    position:absolute;
    top:0;
    left:0;
    z-index:999;
}

.nav-container{
    max-width:1220px;
    margin:auto;
    padding:18px 30px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    position:relative;
    background:transparent;
}

.logo{
    color:#fff;
    font-size:25px;
    font-weight:700;
    text-shadow:0 2px 8px rgba(0,0,0,.9);
}

.nav-links{
    list-style:none;
    display:flex;
    gap:28px;
}

.nav-links li{
    color:#fff;
    cursor:pointer;
    transition:.25s;
    font-weight:500;
    text-shadow:0 2px 8px rgba(0,0,0,.9);
}

.nav-links li:hover{
    color:#dcdcdc;
}

/* ---------- HAMBURGER ---------- */

#menu-toggle{
    display:none;
}

.hamburger{
    display:none;
    color:#fff;
    font-size:32px;
    cursor:pointer;
    user-select:none;
    line-height:1;
    text-shadow:0 2px 8px rgba(0,0,0,.9);
}

/* ---------------- GALLERY ---------------- */

.container{
    max-width:1220px;
    margin:28px auto;
    padding:0 30px;
}

.grid{
    display:grid;
    grid-template-columns:repeat(6,1fr);
    gap:7px;
}

.card{
    overflow:hidden;
    background:#fff;
    transition:.25s;
}

.card:hover{
    transform:translateY(-3px);
}

.card img{
    width:100%;
    height:185px;
    object-fit:cover;
    display:block;
}

/* ---------------- TABLET ---------------- */

@media(max-width:1200px){

    .grid{
        grid-template-columns:repeat(4,1fr);
    }

}

/* ---------------- MOBILE ---------------- */

@media(max-width:768px){

    .banner{
        height:220px;
    }

    .container{
        padding:0 20px;
    }

    .grid{
        grid-template-columns:repeat(2,1fr);
        gap:6px;
    }

    .nav-container{
        min-height:68px;
        justify-content:center;
    }

    .logo{
        display:none;
    }

    .hamburger{
        display:block;
        position:absolute;
        left:50%;
        top:50%;
        transform:translate(-50%, -50%);
    }

    .nav-links{
        display:none;
        flex-direction:column;
        position:absolute;
        top:68px;
        left:0;
        width:100%;
        background:transparent;
        padding:15px 0;
        gap:18px;
        text-align:center;
        z-index:999;
    }

    .nav-links li{
        color:#fff;
        font-size:18px;
        font-weight:600;
        text-shadow:0 2px 10px rgba(0,0,0,1);
    }

    #menu-toggle:checked ~ .nav-links{
        display:flex;
    }

}

/* ---------------- SMALL MOBILE ---------------- */

@media(max-width:500px){

    .grid{
        grid-template-columns:1fr;
    }

}