.mall-cs-fab {
    position: fixed;
    right: 20px;
    bottom: calc(24px + env(safe-area-inset-bottom));
    z-index: 1600;
    width: 52px;
    height: 52px;
    border: none;
    border-radius: 50%;
    background: #2f80ed;
    color: #fff;
    box-shadow: 0 8px 24px rgba(47, 128, 237, 0.45);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.mall-cs-fab:hover {
    transform: translateY(-2px);
    background: #2a73d6;
    box-shadow: 0 12px 28px rgba(47, 128, 237, 0.52);
}

.mall-cs-fab--alert {
    animation: mall-cs-fab-alert 0.75s ease-in-out infinite;
}

@keyframes mall-cs-fab-alert {
    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.55), 0 8px 24px rgba(47, 128, 237, 0.45);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(239, 68, 68, 0), 0 12px 28px rgba(239, 68, 68, 0.45);
        transform: scale(1.06);
    }
}

.mall-cs-fab__icon {
    width: 26px;
    height: 26px;
    display: block;
    flex-shrink: 0;
}

.mall-cs-panel {
    position: fixed;
    inset: 0;
    z-index: 1900;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
}

.mall-cs-panel[hidden] {
    display: none !important;
}

.mall-cs-panel__mask {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
}

.mall-cs-panel__card,
.mall-cs-dialog-card {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 100%;
    height: min(78vh, 640px);
    background: var(--mall-bg-soft, #fff);
    border-radius: 16px 16px 0 0;
    box-shadow: 0 -12px 40px rgba(15, 23, 42, 0.18);
    overflow: hidden;
}

.mall-cs-panel__head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 16px 12px;
    border-bottom: 1px solid var(--mall-border, #eef2f7);
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.06), transparent);
}

.mall-cs-panel__title {
    margin: 0;
    font-size: 17px;
    font-weight: 700;
    color: var(--mall-text, #111827);
}

.mall-cs-panel__status {
    margin: 4px 0 0;
    font-size: 12px;
    color: var(--mall-text-muted, #64748b);
}

.mall-cs-panel__close {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: var(--mall-tag-bg, #f3f4f6);
    color: var(--mall-text-muted, #9ca3af);
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
}

.mall-cs-panel__actions {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding-bottom: 10px;
}

.mall-cs-panel__quick {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    flex: 1;
    min-width: 0;
    padding: 0;
}

.mall-cs-panel__quick[hidden] {
    display: none;
}

.mall-cs-order-btn[hidden] {
    display: none;
}

.mall-cs-order-btn {
    flex-shrink: 0;
    padding: 6px 12px;
    border: 1px solid #bfdbfe;
    border-radius: 999px;
    background: #eff6ff;
    color: #2563eb;
    font-size: 12px;
    cursor: pointer;
    white-space: nowrap;
}

.mall-cs-order-btn:hover {
    border-color: #93c5fd;
    background: #dbeafe;
}

.mall-cs-quick-btn {
    padding: 6px 12px;
    border: 1px solid var(--mall-border, #e5e7eb);
    border-radius: 999px;
    background: var(--mall-bg-soft, #fff);
    color: var(--mall-text, #374151);
    font-size: 12px;
    cursor: pointer;
}

.mall-cs-quick-btn:hover {
    border-color: #93c5fd;
    color: #2563eb;
}

.mall-cs-panel__messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    -webkit-overflow-scrolling: touch;
}

.mall-cs-msg {
    display: flex;
    flex-direction: column;
    max-width: 85%;
}

.mall-cs-msg--user {
    align-self: flex-end;
    align-items: flex-end;
}

.mall-cs-msg--staff {
    align-self: flex-start;
    align-items: flex-start;
}

.mall-cs-msg__bubble {
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 14px;
    line-height: 1.55;
    word-break: break-word;
    white-space: pre-wrap;
}

.mall-cs-msg--user .mall-cs-msg__bubble {
    background: #2563eb;
    color: #fff;
    border-bottom-right-radius: 4px;
}

.mall-cs-msg--staff .mall-cs-msg__bubble {
    background: var(--mall-tag-bg, #f3f4f6);
    color: var(--mall-text, #111827);
    border-bottom-left-radius: 4px;
}

.mall-cs-msg__time {
    margin-top: 4px;
    font-size: 11px;
    color: var(--mall-text-muted, #94a3b8);
}

.mall-cs-msg--welcome .mall-cs-msg__bubble {
    background: #fff7ed;
    color: #9a3412;
    border: 1px solid #fed7aa;
}

.mall-cs-panel__foot {
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--mall-border, #eef2f7);
    background: var(--mall-bg-soft, #fff);
}

.mall-cs-panel__guest-hint {
    margin: 0 0 8px;
    font-size: 12px;
    color: var(--mall-text-muted, #64748b);
}

.mall-cs-panel__form {
    display: flex;
    align-items: flex-end;
    gap: 10px;
}

.mall-cs-panel__image-btn {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border: 1px solid var(--mall-border, #e5e7eb);
    border-radius: 10px;
    background: var(--mall-bg-soft, #fff);
    color: #64748b;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.mall-cs-panel__image-btn:hover:not(:disabled) {
    color: #2563eb;
    border-color: #bfdbfe;
}

.mall-cs-panel__image-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.mall-cs-panel__image-btn svg {
    width: 20px;
    height: 20px;
}

.mall-cs-panel__input {
    flex: 1;
    min-height: 40px;
    max-height: 96px;
    padding: 10px 12px;
    border: 1px solid var(--mall-border, #e5e7eb);
    border-radius: 10px;
    background: var(--mall-bg-soft, #fff);
    color: var(--mall-text, #111827);
    font-size: 14px;
    line-height: 1.45;
    resize: none;
    font-family: inherit;
}

.mall-cs-panel__input:focus {
    outline: none;
    border-color: #93c5fd;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.mall-cs-panel__send {
    flex-shrink: 0;
    min-width: 64px;
    height: 40px;
    padding: 0 16px;
    border: none;
    border-radius: 10px;
    background: #2563eb;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.mall-cs-panel__send:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.mall-cs-panel__contact {
    margin-top: 8px;
    font-size: 12px;
    color: var(--mall-text-muted, #64748b);
}

.mall-cs-panel__wechat {
    border: none;
    background: none;
    padding: 0;
    color: #2563eb;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
}

body.mall-cs-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .mall-cs-fab {
        bottom: calc(78px + env(safe-area-inset-bottom));
    }
}

@media (min-width: 769px) {
    .mall-cs-panel,
    .mall-cs-order-picker {
        align-items: center;
        padding: 24px;
    }

    .mall-cs-panel__card,
    .mall-cs-dialog-card {
        width: min(400px, 100%);
        height: min(620px, calc(100vh - 48px));
        border-radius: 16px;
        box-shadow: 0 20px 48px rgba(15, 23, 42, 0.18);
    }

    .mall-cs-fab {
        bottom: calc(28px + env(safe-area-inset-bottom));
        right: 24px;
    }
}

html[data-theme="dark"] .mall-cs-panel__card,
html[data-theme="dark"] .mall-cs-dialog-card {
    background: var(--mall-card);
    box-shadow: 0 -12px 40px rgba(0, 0, 0, 0.45);
}

html[data-theme="dark"] .mall-cs-panel__head {
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.14), transparent);
    border-bottom-color: var(--mall-border);
}

html[data-theme="dark"] .mall-cs-panel__foot {
    background: var(--mall-card);
    border-top-color: var(--mall-border);
}

html[data-theme="dark"] .mall-cs-panel__close {
    background: var(--mall-tag-bg);
    color: var(--mall-text-secondary);
}

html[data-theme="dark"] .mall-cs-order-btn {
    border-color: rgba(37, 99, 235, 0.45);
    background: rgba(37, 99, 235, 0.12);
    color: #93c5fd;
}

html[data-theme="dark"] .mall-cs-order-btn:hover {
    border-color: rgba(147, 197, 253, 0.55);
    background: rgba(37, 99, 235, 0.2);
}

html[data-theme="dark"] .mall-cs-quick-btn {
    border-color: var(--mall-border);
    background: var(--mall-tag-bg);
    color: var(--mall-text-secondary);
}

html[data-theme="dark"] .mall-cs-quick-btn:hover {
    border-color: rgba(147, 197, 253, 0.45);
    color: #93c5fd;
}

html[data-theme="dark"] .mall-cs-panel__image-btn {
    border-color: var(--mall-border);
    background: var(--mall-tag-bg);
    color: var(--mall-text-muted);
}

html[data-theme="dark"] .mall-cs-panel__image-btn:hover:not(:disabled) {
    color: #93c5fd;
    border-color: rgba(147, 197, 253, 0.45);
}

html[data-theme="dark"] .mall-cs-panel__input {
    border-color: var(--mall-border);
    background: var(--mall-bg-soft);
    color: var(--mall-text);
}

html[data-theme="dark"] .mall-cs-panel__input::placeholder {
    color: var(--mall-text-muted);
}

html[data-theme="dark"] .mall-cs-panel__input:focus {
    border-color: rgba(147, 197, 253, 0.55);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

html[data-theme="dark"] .mall-cs-msg--staff .mall-cs-msg__bubble {
    background: rgba(148, 163, 184, 0.12);
}

html[data-theme="dark"] .mall-cs-msg--welcome .mall-cs-msg__bubble {
    background: rgba(251, 146, 60, 0.12);
    border-color: rgba(251, 146, 60, 0.25);
    color: #fdba74;
}

.mall-cs-msg--order-card {
    max-width: 92%;
}

.mall-cs-msg--order-card .mall-cs-msg__bubble {
    padding: 0;
    background: transparent;
}

.mall-cs-msg--image .mall-cs-msg__bubble {
    padding: 4px;
    background: transparent;
}

.mall-cs-msg--user.mall-cs-msg--image .mall-cs-msg__bubble {
    background: transparent;
}

.mall-cs-msg--staff.mall-cs-msg--image .mall-cs-msg__bubble {
    background: transparent;
}

.mall-cs-msg__image-btn {
    display: block;
    padding: 0;
    border: none;
    background: transparent;
    cursor: zoom-in;
    line-height: 0;
}

.mall-cs-msg__image-link {
    display: block;
    line-height: 0;
}

.mall-cs-msg__image {
    display: block;
    max-width: 200px;
    max-height: 200px;
    border-radius: 10px;
    object-fit: cover;
    background: #f3f4f6;
}

.mall-cs-order-card-msg {
    width: 240px;
    max-width: 100%;
    border: 1px solid var(--mall-border, #e5e7eb);
    border-radius: 10px;
    overflow: hidden;
    background: var(--mall-bg-soft, #fff);
    text-align: left;
    line-height: 1.3;
}

.mall-cs-order-card-msg__head {
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    color: #2563eb;
    background: #eff6ff;
    border-bottom: 1px solid #dbeafe;
}

.mall-cs-order-card-msg__body {
    display: flex;
    gap: 8px;
    padding: 6px 10px;
    align-items: flex-start;
}

.mall-cs-order-card-msg__thumb {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    overflow: hidden;
    background: #f3f4f6;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: #64748b;
}

.mall-cs-order-card-msg__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.mall-cs-order-card-msg__info {
    min-width: 0;
    flex: 1;
}

.mall-cs-order-card-msg__title {
    font-size: 12px;
    font-weight: 600;
    color: var(--mall-text, #111827);
    line-height: 1.35;
    word-break: break-word;
}

.mall-cs-order-card-msg__meta {
    margin-top: 2px;
    font-size: 10px;
    color: var(--mall-text-muted, #64748b);
    line-height: 1.35;
}

.mall-cs-order-card-msg__status {
    display: inline-block;
    margin-top: 6px;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    background: #ecfdf5;
    color: #059669;
}

.mall-cs-order-card-msg__status.is-pending {
    background: #fff7ed;
    color: #ea580c;
}

.mall-cs-order-card-msg__status.is-expired {
    background: #fef2f2;
    color: #dc2626;
}

.mall-cs-order-picker {
    position: fixed;
    inset: 0;
    z-index: 10050;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
}

.mall-cs-order-picker[hidden] {
    display: none;
}

.mall-cs-order-picker__mask {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
}

.mall-cs-order-picker__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--mall-border, #eef2f7);
}

.mall-cs-order-picker__title {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--mall-text, #111827);
}

.mall-cs-order-picker__close {
    border: none;
    background: none;
    font-size: 22px;
    line-height: 1;
    color: #94a3b8;
    cursor: pointer;
}

.mall-cs-order-picker__body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 12px 16px calc(16px + env(safe-area-inset-bottom));
}

.mall-cs-order-picker__loading,
.mall-cs-order-picker__empty {
    padding: 24px 0;
    text-align: center;
    font-size: 14px;
    color: var(--mall-text-muted, #64748b);
}

.mall-cs-order-picker__list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mall-cs-order-picker__item {
    display: flex;
    gap: 10px;
    width: 100%;
    padding: 10px;
    border: 1px solid var(--mall-border, #e5e7eb);
    border-radius: 12px;
    background: var(--mall-bg-soft, #fff);
    text-align: left;
    cursor: pointer;
}

.mall-cs-order-picker__item:hover {
    border-color: #93c5fd;
    background: #f8fbff;
}

.mall-cs-order-picker__item-thumb {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 8px;
    overflow: hidden;
    background: #f3f4f6;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 600;
    color: #64748b;
}

.mall-cs-order-picker__item-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.mall-cs-order-picker__item-body {
    min-width: 0;
    flex: 1;
}

.mall-cs-order-picker__item-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.mall-cs-order-picker__item-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--mall-text, #111827);
    line-height: 1.4;
    flex: 1;
    min-width: 0;
    word-break: break-word;
}

.mall-cs-order-picker__item-meta {
    margin-top: 4px;
    font-size: 12px;
    color: var(--mall-text-muted, #64748b);
}

.mall-cs-order-picker__item-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: 6px;
    font-size: 12px;
}

.mall-cs-order-picker__item-price {
    color: #2563eb;
    font-weight: 600;
}

.mall-cs-order-picker__item-time {
    flex-shrink: 0;
    color: var(--mall-text-muted, #64748b);
    white-space: nowrap;
}

.mall-cs-order-picker__item-status {
    flex-shrink: 0;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    background: #ecfdf5;
    color: #059669;
}

.mall-cs-order-picker__item-status.is-pending {
    background: #fff7ed;
    color: #ea580c;
}

.mall-cs-order-picker__item-status.is-expired {
    background: #fef2f2;
    color: #dc2626;
}

html[data-theme="dark"] .mall-cs-order-card-msg {
    background: var(--mall-bg-soft);
    border-color: var(--mall-border);
}

html[data-theme="dark"] .mall-cs-order-card-msg__head {
    background: rgba(37, 99, 235, 0.14);
    border-bottom-color: rgba(37, 99, 235, 0.22);
    color: #93c5fd;
}

html[data-theme="dark"] .mall-cs-order-picker__head {
    border-bottom-color: var(--mall-border);
}

html[data-theme="dark"] .mall-cs-order-picker__item {
    background: var(--mall-bg-soft);
    border-color: var(--mall-border);
}

html[data-theme="dark"] .mall-cs-order-picker__item:hover {
    border-color: rgba(147, 197, 253, 0.45);
    background: rgba(37, 99, 235, 0.1);
}

html[data-theme="dark"] .mall-cs-order-picker__item-thumb,
html[data-theme="dark"] .mall-cs-order-card-msg__thumb,
html[data-theme="dark"] .mall-cs-msg__image {
    background: var(--mall-tag-bg);
    color: var(--mall-text-muted);
}

body.mall-cs-image-preview-open {
    overflow: hidden;
}

.mall-cs-image-preview {
    position: fixed;
    inset: 0;
    z-index: 10300;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mall-cs-image-preview[hidden] {
    display: none !important;
}

.mall-cs-image-preview__mask {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.mall-cs-image-preview__close {
    position: absolute;
    top: 40px;
    right: 40px;
    z-index: 1;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.45);
    color: #fff;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
}

.mall-cs-image-preview__close:hover {
    background: rgba(0, 0, 0, 0.65);
}

.mall-cs-image-preview__img {
    position: relative;
    z-index: 1;
    max-width: min(90vw, 1200px);
    max-height: 90vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.28);
    cursor: zoom-out;
}