.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: white;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-item {
    position: relative;
    margin: 0 20px;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 28px 0;
    font-size: 16px;
    color: var(--text-dark);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-item.active .nav-link {
    color: var(--primary-color);
}

.nav-arrow {
    margin-left: 4px;
    font-size: 12px;
    transition: transform var(--transition-fast);
}

.nav-item:hover .nav-arrow {
    transform: rotate(180deg);
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 200px;
    background-color: white;
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    padding: 8px 0;
}

.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
}

.dropdown-item {
    display: block;
    padding: 12px 20px;
    font-size: 14px;
    color: var(--text-dark);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

.header-contact {
    display: flex;
    align-items: center;
}

.header-phone {
    display: flex;
    align-items: center;
    font-size: 16px;
    color: var(--primary-color);
    font-weight: bold;
}

.header-phone-icon {
    margin-right: 8px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-dark);
    transition: all var(--transition-fast);
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background-color: white;
    box-shadow: var(--shadow-lg);
    padding: 20px;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav-item {
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    font-size: 16px;
    color: var(--text-dark);
}

.mobile-nav-link:hover {
    color: var(--primary-color);
}

.mobile-dropdown {
    display: none;
    padding-left: 20px;
    background-color: var(--bg-light);
}

.mobile-dropdown.active {
    display: block;
}

.mobile-dropdown-item {
    display: block;
    padding: 12px 0;
    font-size: 14px;
    color: var(--text-medium);
}

.mobile-dropdown-item:hover {
    color: var(--primary-color);
}

@media (max-width: 1024px) {
    .main-nav {
        display: none;
    }
    
    .header-contact {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 60px;
    }
    
    .logo img {
        height: 40px;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .mobile-nav {
        top: 60px;
    }
}

.breadcrumb {
    background-color: var(--bg-light);
    padding: 16px 0;
    margin-top: 80px;
}

.breadcrumb-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    font-size: 14px;
    color: var(--text-medium);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin: 0 8px;
    color: var(--text-light);
}

.breadcrumb-link {
    color: var(--text-medium);
    transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
    color: var(--primary-color);
}

.breadcrumb-current {
    color: var(--text-dark);
    font-weight: 500;
}

@media (max-width: 768px) {
    .breadcrumb {
        margin-top: 60px;
        padding: 12px 0;
    }
    
    .breadcrumb-list {
        font-size: 12px;
    }
}