.wachumba-product-chat {
    --product-chat-footer-height: 80px;
    --product-chat-bottom-inset: 80px;
    --product-chat-visible-height: 100vh;
    --product-chat-gap: 16px;
    --product-chat-tab-shift: 0px;
}

.wachumba-product-chat .chatbot {
    bottom: calc(var(--product-chat-bottom-inset) + var(--product-chat-gap));
    right: 20px;
}

.wachumba-product-chat .chat-btn {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
}

.wachumba-product-chat .chat-popup {
    position: fixed;
    top: auto;
    right: 20px;
    bottom: calc(var(--product-chat-bottom-inset) + var(--product-chat-gap));
    left: auto;
    width: min(480px, calc(100vw - 40px));
    max-width: calc(100vw - 40px);
    height: min(680px, calc(var(--product-chat-visible-height) - var(--product-chat-footer-height) - var(--product-chat-gap) - 16px));
}

.wachumba-product-chat .chat-area {
    min-height: 0;
    flex: 1 1 auto;
}

.wachumba-product-chat .chat-body {
    flex-shrink: 0;
}

.wachumba-product-chat.is-open .chat-btn {
    visibility: hidden;
    pointer-events: none;
}

.wachumba-product-chat .product-chat-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex: 0 0 auto;
    min-height: 48px;
    padding: 4px 8px 4px 56px;
    background: #fff;
    color: #252b4b;
    border-bottom: 1px solid #eee;
    font-size: 14px;
    font-weight: 700;
}

.wachumba-product-chat .product-chat-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: transparent;
    color: #252b4b;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

.wachumba-product-chat .product-chat-close:focus-visible {
    outline: 2px solid #e95424;
    outline-offset: -4px;
}

@media (max-width: 991px) {
    .wachumba-product-chat {
        --product-chat-footer-height: 72px;
        --product-chat-bottom-inset: 72px;
        --product-chat-gap: 12px;
    }

    .wachumba-product-chat .chatbot {
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
    }

    .wachumba-product-chat .chat-btn {
        position: static;
        transform: translateY(var(--product-chat-tab-shift));
    }

    .wachumba-product-chat .product-chat-heading {
        padding-left: 15px;
    }

    .wachumba-product-chat .chat-popup {
        top: auto;
        right: 0;
        left: 0;
        width: 100%;
        max-width: none;
        height: min(70vh, calc(var(--product-chat-visible-height) - var(--product-chat-footer-height) - var(--product-chat-gap) - 16px));
        height: min(70dvh, calc(var(--product-chat-visible-height) - var(--product-chat-footer-height) - var(--product-chat-gap) - 16px));
        border-radius: 20px 20px 0 0;
    }
}