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

body{
    background: #0f172a;
    color:#fff;
}

header{
    text-align: center;
    padding: 70px 20px;
}

header h1{
    font-size: 3rem;
    margin-bottom: 10px;
    color:#fff;
}

header p{
    color: #94a3b8;
    font-size: 18px;
}

.gallery{ 
    width: 90%;
    max-width: 1400px;
    margin: auto;
    display:grid;
    grid-template-columns: repeat(auto-fit,minmax(300px,1fr));
    gap: 25px;
    padding-bottom:80px;
}
.card{
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    cursor: pointer;
    background: #fff;
    box-shadow: 0 20px 40px rgba(0,0,0, .3);
} 

.card img{
    width: 100%;
    height: 320px;
    object-fit: cover;
    transition: 2s;
}
.card:hover img{
    transform: scale(1.15);
}
.overlay{
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,.8), rgba(0,0,0, .1));
    display: flex;
    justify-content: center;
    align-items: flex-end;
    padding: 25px;
    opacity: 0.2;
    transition: 5s;
}
.card:hover .overlay{
    opacity: 1;
}

a {
    color: aliceblue;
}
.overlay h3{
    font-size: 26px;
    transform: translateY(0);
    transition: .1s;
}

.card:hover .overlay h3{
    transform: translateY(0);
}

@media (max-width:768px) {
    header h1{
        font-size: 2.2rem;
    }
    header p{
        font-size: 16px;
    }
    .card img{
        height: 260px;
    }
}