.banner-container {
    position: relative;
    width: 100%;
    max-height: 500px;
    overflow: hidden;
}
.banner-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
    padding: 20px;
}
.banner-overlay h1 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}
.icon-spin {
    animation: spin 2s linear infinite;
    font-size: 3rem;
    color: #007bff;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.dropdown:hover .dropdown-menu {
    display: block;
    background-color: #00BFA5; /* سبز آبی */
}
.dropdown-menu a {
    color: #333;
}
.dropdown-menu a:hover {
    background-color: #009688; /* سبز آبی تیره‌تر */
    color: white;
}