.umb-outer-wrapper {
    display: flex;
    justify-content: flex-end; 
}

.umb-wrapper {
    display: inline-block;
    position: relative;
    vertical-align: middle;
    font-family: inherit;
    font-size: 15px;
}

.umb-button-container {
    display: inline-block;
}

.umb-button {
    display: inline-flex; 
    align-items: center; 
    vertical-align: middle; 
    padding: 8px 16px;
    background-color: #F4FAFC;
    color: #333333;
    border: 1px solid #DADFE4;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    margin: 0;
    line-height: 1.5; 
}

.umb-button:hover,
.umb-button:focus {
    background-color: #E9EFF3;
    border-color: #C8CED3;
    color: #222222;
    outline: none;
}

.umb-main-button-icon {
    width: 1em;
    height: 1em;
    margin-left: 8px; 
    vertical-align: middle; 
    flex-shrink: 0;
    /* استایل برای تغییر رنگ این آیکون اصلی در هاور دکمه اصلی (در صورت نیاز) */
    /* background-color: currentColor; (اگر از mask برای این هم استفاده شود) */
}

.umb-submenu-wrapper {
    background-color: #FFFFFF;
    border: 1px solid #E0E0E0;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    min-width: 200px; 
    box-sizing: border-box;
    position: absolute;
    top: 100%; 
    left: 0; 
    z-index: 99999; 
    display: none; 
}

.umb-submenu-box {
    padding: 8px 0;
    overflow: hidden; 
    border-radius: inherit; 
}

.umb-submenu-list {
    list-style: none !important; 
    list-style-type: none !important; 
    margin: 0 !important;
    padding: 0 !important;
}

.umb-submenu-item-link {
    display: flex; 
    align-items: center; 
    padding: 10px 15px;
    color: #333333;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.2s ease, color 0.2s ease;
    font-size: 15px;
}

.umb-submenu-item-link:hover,
.umb-submenu-item-link:focus {
    background-color: #F4FAFC;
    color: #0073aa;
}

.umb-item-icon {
    display: inline-block;
    width: 1em; 
    height: 1em; 
    margin-left: 8px; 
    flex-shrink: 0; 
    background-color: currentColor; 
    -webkit-mask-image: var(--umb-icon-url);
    mask-image: var(--umb-icon-url);
    -webkit-mask-size: contain;
    mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
}

.umb-item-text {
    flex-grow: 1; 
}

.umb-skeleton-loader {
    display: block;
}

.umb-button-skeleton .umb-skeleton-line {
    width: 100px;
    height: 34px; 
    background-color: #e0e0e0;
    border-radius: 10px;
    margin: 0;
    animation: umb-pulse 1.5s infinite ease-in-out;
}

.umb-submenu-skeleton {
    padding: 15px; 
    box-sizing: border-box;
    border-radius: 10px; 
}

.umb-submenu-skeleton .umb-skeleton-line {
    width: 100%;
    height: 20px;
    background-color: #e0e0e0;
    border-radius: 4px;
    margin-bottom: 10px;
    animation: umb-pulse 1.5s infinite ease-in-out;
}

.umb-submenu-skeleton .umb-skeleton-line:last-child {
    margin-bottom: 0;
}

@keyframes umb-pulse {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
    100% {
        opacity: 1;
    }
}