.sd-popup-overlay {
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
    background: rgba(0, 0, 0, var(--sd-overlay));
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .25s ease, visibility .25s ease;
}

.sd-popup-overlay.sd-popup-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.sd-popup {
    position: relative;
    width: min(var(--sd-popup-width), 100%);
    max-height: calc(100vh - 40px);
    overflow: auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 20px 70px rgba(0,0,0,.30);
    transform: translateY(15px) scale(.98);
    transition: transform .25s ease;
}

.sd-popup-visible .sd-popup {
    transform: translateY(0) scale(1);
}

.sd-popup-close {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
    width: 38px;
    height: 38px;
    border: 0;
    border-radius: 50%;
    background: rgba(0,0,0,.65);
    color: #fff;
    font-size: 27px;
    line-height: 38px;
    cursor: pointer;
}

.sd-popup-image img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 55vh;
    object-fit: cover;
}

.sd-popup-body {
    padding: 28px;
}

.sd-popup-body h2 {
    margin: 0 0 12px;
    font-size: 28px;
    line-height: 1.2;
}

.sd-popup-content {
    font-size: 16px;
    line-height: 1.65;
}

.sd-popup-button {
    display: inline-block;
    margin-top: 18px;
    padding: 11px 22px;
    border-radius: 6px;
    background: #111;
    color: #fff !important;
    text-decoration: none !important;
}

@media (max-width: 600px) {
    .sd-popup-overlay {
        padding: 12px;
    }

    .sd-popup-body {
        padding: 22px 18px;
    }

    .sd-popup-body h2 {
        font-size: 23px;
    }

    .sd-popup-close {
        width: 34px;
        height: 34px;
        line-height: 34px;
        font-size: 24px;
    }
}