/* Shared body background — used on every page */
body {
    background-image: url('../img/nyc-winter.jpg');
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    background-color: rgba(0,0,0,0.75);
    background-blend-mode: darken;
}

/* Back-to-top button */
#myBtn {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 30px;
    z-index: 99;
    font-size: 30px;
    border: 2px solid white;
    outline: none;
    background-color: rgba(255,255,255,0.2);
    color: white;
    cursor: pointer;
    padding: 11px 21px 13px 19px;
    border-radius: 50%;
}
#myBtn:hover {
    background-color: rgba(255,255,255,0.5);
}

/* Reusable spacing classes (replacing inline styles) */
.mt-content {
    margin-top: 1.2in;
}
.mt-content-sm {
    margin-top: 0.7in;
}
.mt-half-cm {
    margin-top: 0.5cm;
}
.mt-third-cm {
    margin-top: 0.3cm;
}
.card-img-fixed {
    width: 100%;
    height: 200px;
    object-fit: cover;
}