.advertisement-container {
    margin-bottom: 1rem;
}

.ad-banner {
    position: relative;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 1.25rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
}

.ad-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.ad-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.ad-icon {
    background: #6c757d;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #dee2e6;
}

.ad-icon i {
    color: white;
    font-size: 1.2rem;
}

.ad-text {
    flex: 1;
}

.ad-title {
    color: #495057;
    margin: 0 0 0.25rem 0;
    font-weight: 600;
    font-size: 1rem;
}

.ad-description {
    color: #6c757d;
    margin: 0;
    font-size: 0.9rem;
}

.ad-action {
    align-self: flex-start;
}

.ad-action .btn {
    background: #007bff;
    border: 1px solid #007bff;
    color: white;
    transition: all 0.2s ease;
    font-size: 0.85rem;
    padding: 0.375rem 0.75rem;
}

.ad-action .btn:hover {
    background: #0056b3;
    border-color: #0056b3;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 123, 255, 0.2);
}

.ad-close {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: #6c757d;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.2s ease;
    cursor: pointer;
}

.ad-close:hover {
    background: #5a6268;
}

.ad-close i {
    font-size: 0.7rem;
}

@media (max-width: 768px) {
    .ad-header {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .ad-banner {
        padding: 1rem;
    }
    
    .ad-icon {
        width: 35px;
        height: 35px;
    }
    
    .ad-icon i {
        font-size: 1rem;
    }
    
    .ad-action {
        align-self: center;
    }
}