.site-header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 15px 0;
}

.navbar-brand {
    font-size: 24px;
    font-weight: 700;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 10px;
}

.navbar-brand img {
    width: 250px;
    height: 50px;
    object-fit: contain;
}

.navbar-brand:hover {
    color: #3498db;
}

.nav-link {
    font-size: 16px;
    font-weight: 500;
    color: #34495e;
    padding: 8px 16px;
    margin: 0 5px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: #3498db;
    background: rgba(52, 152, 219, 0.1);
}

.nav-link i {
    margin-right: 6px;
}

.navbar-toggler {
    border: none;
    padding: 0;
}

.navbar-toggler:focus {
    box-shadow: none;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='rgba(44, 62, 80, 1)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.search-form {
    position: relative;
    max-width: 300px;
}

.search-input {
    width: 100%;
    padding: 10px 15px;
    padding-right: 40px;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.search-button {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
}

.search-button:hover {
    color: #3498db;
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        background: #fff;
        padding: 15px;
        border-radius: 8px;
        margin-top: 15px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }

    .nav-link {
        padding: 12px 16px;
        margin: 5px 0;
    }

    .search-form {
        max-width: 100%;
        margin-top: 15px;
    }
}