.steedvision-chat-hub {
    position: fixed;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    transition: opacity 150ms ease, visibility 150ms ease;
}

.steedvision-chat-hub.is-yielding {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.steedvision-chat-hub--bottom-right {
    right: 1.5rem;
    bottom: 1.5rem;
}

.steedvision-chat-hub--bottom-left {
    left: 1.5rem;
    bottom: 1.5rem;
}

.steedvision-chat-hub--top-right {
    right: 1.5rem;
    top: 1.5rem;
}

.steedvision-chat-hub--top-left {
    left: 1.5rem;
    top: 1.5rem;
}

.steedvision-chat-hub--bottom-left,
.steedvision-chat-hub--top-left {
    align-items: flex-start;
}

.steedvision-chat-hub--top-right,
.steedvision-chat-hub--top-left {
    flex-direction: column-reverse;
}

.steedvision-chat-hub__channels {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    box-sizing: border-box;
    min-width: 12rem;
    margin-bottom: 0.75rem;
    padding: 0.5rem;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    background: #ffffff;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.18);
    opacity: 1;
    transform: translateY(0) scale(1);
    transform-origin: bottom;
    transition: opacity 200ms ease, transform 200ms ease;
}

.steedvision-chat-hub--top-right .steedvision-chat-hub__channels,
.steedvision-chat-hub--top-left .steedvision-chat-hub__channels {
    margin-top: 0.75rem;
    margin-bottom: 0;
    transform-origin: top;
}

.steedvision-chat-hub__channels[hidden] {
    display: none;
}

.steedvision-chat-hub__toggle {
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 0;
    border-radius: 9999px;
    color: #ffffff;
    line-height: 1;
    text-decoration: none;
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.22);
    cursor: pointer;
    transition: transform 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
    -webkit-appearance: none;
    appearance: none;
}

.steedvision-chat-hub__action {
    box-sizing: border-box;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.375rem 0.75rem 0.375rem 0.375rem;
    border: 0;
    border-radius: 0.5rem;
    background: transparent;
    color: #1f2937;
    font: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.25;
    text-align: left;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color 150ms ease;
    -webkit-appearance: none;
    appearance: none;
}

.steedvision-chat-hub__action:hover,
.steedvision-chat-hub__action:focus-visible {
    background: #f3f4f6;
    color: #111827;
    text-decoration: none;
}

.steedvision-chat-hub__action-icon {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 9999px;
    color: #ffffff;
}

.steedvision-chat-hub__action-icon svg {
    width: 1.25rem;
    height: 1.25rem;
}

.steedvision-chat-hub__action-icon--live {
    background: #6b7280;
}

.steedvision-chat-hub__action-icon--whatsapp {
    background: #25d366;
}

.steedvision-chat-hub__action-icon--messenger {
    background: #0084ff;
}

.steedvision-chat-hub__toggle {
    position: relative;
    width: 3.5rem;
    height: 3.5rem;
    /* 中灰半透明，不抢加购按钮的橙色；模糊背景让图标在图片上也清楚 */
    background: rgba(107, 114, 128, 0.8);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.18);
}

.steedvision-chat-hub__toggle:hover {
    color: #ffffff;
    text-decoration: none;
    transform: scale(1.08);
}

.steedvision-chat-hub__toggle:hover {
    background: #4b5563;
    box-shadow: 0 12px 26px rgba(15, 23, 42, 0.24);
}

.steedvision-chat-hub__toggle--whatsapp {
    background: #25d366;
    box-shadow: 0 14px 28px rgba(37, 211, 102, 0.28);
}

.steedvision-chat-hub__toggle--whatsapp:hover {
    background: #16a34a;
    box-shadow: 0 16px 34px rgba(37, 211, 102, 0.34);
}

.steedvision-chat-hub__toggle--messenger {
    background: #0084ff;
}

.steedvision-chat-hub__toggle--messenger:hover {
    background: #2563eb;
}

.steedvision-chat-hub__toggle.is-open {
    background: #4b5563;
    transform: rotate(90deg);
}

.steedvision-chat-hub__toggle.is-open:hover {
    transform: rotate(90deg) scale(1.08);
}

.steedvision-chat-hub__toggle.is-scroll-top {
    background: rgba(107, 114, 128, 0.8);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.18);
    transform: none;
}

.steedvision-chat-hub__toggle.is-scroll-top:hover {
    background: #4b5563;
    transform: scale(1.08);
}

.steedvision-chat-hub__toggle svg {
    position: absolute;
    width: 2rem;
    height: 2rem;
    flex: 0 0 auto;
}

.steedvision-chat-hub__toggle svg[hidden] {
    display: none;
}

@media (max-width: 640px) {
    .steedvision-chat-hub {
        right: 1rem;
        bottom: 1rem;
        transition: bottom 180ms ease, opacity 150ms ease, visibility 150ms ease;
    }

    .steedvision-chat-hub--bottom-left {
        right: auto;
        left: 1rem;
    }

    .steedvision-chat-hub--top-right {
        top: 1rem;
        bottom: auto;
    }

    .steedvision-chat-hub--top-left {
        right: auto;
        bottom: auto;
        left: 1rem;
        top: 1rem;
    }

    .steedvision-chat-hub__toggle {
        width: 3rem;
        height: 3rem;
    }

    .steedvision-chat-hub__toggle svg {
        width: 1.75rem;
        height: 1.75rem;
    }

    /* 底栏高度由脚本按实际尺寸写入，关掉配送提示后按钮跟着下移 */
    .catalog-product-view.sv-sticky-pdp-cta-visible .steedvision-chat-hub--bottom-right,
    .catalog-product-view.sv-sticky-pdp-cta-visible .steedvision-chat-hub--bottom-left {
        bottom: calc(var(--sv-chat-hub-cta-height, calc(7rem + env(safe-area-inset-bottom))) + 0.75rem);
    }
}