.campaign-popup {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s ease, visibility .3s ease;
}

.campaign-popup.is-open {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

.campaign-popup__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, .75);
    backdrop-filter: blur(4px);
}

.campaign-popup__dialog {
    position: relative;
    z-index: 1;
    width: max-content;
    max-width: min(900px, 100%);
    max-height: calc(100dvh - 48px);
    transform: translateY(20px) scale(.97);
    transition: transform .35s ease;
}

.campaign-popup.is-open .campaign-popup__dialog {
    transform: translateY(0) scale(1);
}

.campaign-popup__image {
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: calc(100dvh - 48px);
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 20px 70px rgba(0, 0, 0, .25);
}

.campaign-popup__close {
    position: absolute;
    top: -15px;
    right: -15px;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 0;
    border-radius: 50%;
    background: #fff;
    color: #222;
    font-size: 18px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, .2);
    transition: background .2s ease, transform .2s ease;
}

.campaign-popup__close:hover {
    background: #f2f2f2;
    transform: rotate(90deg);
}

body.campaign-popup-open {
    overflow: hidden;
}

@media (max-width: 767px) {
    .campaign-popup {
        padding: 20px;
    }

    .campaign-popup__dialog {
        max-width: 100%;
        max-height: calc(100dvh - 40px);
    }

    .campaign-popup__image {
        max-height: calc(100dvh - 40px);
        border-radius: 8px;
    }

    .campaign-popup__close {
        top: -12px;
        right: -8px;
        width: 34px;
        height: 34px;
        font-size: 16px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .campaign-popup,
    .campaign-popup__dialog,
    .campaign-popup__close {
        transition: none;
    }
}