.chb-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.45);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
.chb-overlay.active {
    display: flex;
}
.chb-modal {
    background: #fff;
    padding: 0;
    max-width: 900px;
    width: 95vw;
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    position: relative;
    overflow: visible;
    max-height: 90vh;
    overflow: auto;
}
.chb-close {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    background: transparent;
    border: none;
    font-size: 2rem;
    color: #888 !important;      /* Ensure grey color */
    cursor: pointer;
    z-index: 10;
    transition: color 0.2s;
    padding: 0;
}
.chb-close:hover {
    color: #222 !important;      /* Darker grey on hover */
}
/* .chb-book-now-btn {
    margin: 1rem;
} */