/* Header и навигация */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

@media (min-width: 1024px) {
    .header-inner {
        height: 80px;
    }
}

/* Логотип */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.logo img {
    height: 40px;
    width: auto;
}

.logo span {
    color: var(--color-primary);
}

/* Навигация */
.nav {
    display: none;
}

@media (min-width: 1024px) {
    .nav {
        display: flex;
        align-items: center;
        gap: var(--space-8);
    }
    
    .nav-list {
        display: flex;
        align-items: center;
        gap: var(--space-6);
        list-style: none;
        margin: 0;
        padding: 0;
    }
    
    .nav-link {
        color: var(--color-gray-600);
        font-weight: 500;
        font-size: var(--font-size-sm);
        padding: var(--space-2) 0;
        position: relative;
        transition: color var(--transition-fast);
    }
    
    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--color-primary);
        transition: width var(--transition-fast);
    }
    
    .nav-link:hover {
        color: var(--color-gray-900);
    }
    
    .nav-link:hover::after {
        width: 100%;
    }
    
    .nav-link.active {
        color: var(--color-primary);
    }
    
    .nav-link.active::after {
        width: 100%;
    }
}

/* Телефон в шапке */
.header-phone {
    display: none;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-gray-700);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.header-phone svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

@media (min-width: 768px) {
    .header-phone {
        display: flex;
    }
}

/* Выбор города */
.city-selector {
    position: relative;
}

.city-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-gray-100);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.city-btn:hover {
    background: var(--color-gray-200);
}

.city-btn svg {
    width: 16px;
    height: 16px;
    color: var(--color-gray-500);
}

.city-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-2);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-4);
    min-width: 280px;
    max-height: 400px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.city-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.city-dropdown h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-gray-200);
}

.city-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.city-list li {
    margin-bottom: var(--space-1);
}

.city-list a {
    display: block;
    padding: var(--space-2) var(--space-3);
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.city-list a:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

/* Мобильное меню кнопка */
.mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

@media (min-width: 1024px) {
    .mobile-menu-btn {
        display: none;
    }
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    position: relative;
    transition: all var(--transition-fast);
}

.mobile-menu-btn span::before,
.mobile-menu-btn span::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.mobile-menu-btn span::before {
    top: -8px;
}

.mobile-menu-btn span::after {
    top: 8px;
}

.mobile-menu-btn.active span {
    background: transparent;
}

.mobile-menu-btn.active span::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-btn.active span::after {
    top: 0;
    transform: rotate(-45deg);
}

/* Мобильное меню */
.mobile-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    padding: var(--space-6);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
    z-index: 999;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav-list li {
    border-bottom: 1px solid var(--color-gray-200);
}

.mobile-nav-link {
    display: block;
    padding: var(--space-4) 0;
    color: var(--color-gray-700);
    font-size: var(--font-size-lg);
    font-weight: 500;
}

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

.mobile-phone {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 2px solid var(--color-gray-200);
}

.mobile-phone a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    font-weight: 700;
}

/* Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 998;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Header CTA кнопка */
.header-cta {
    display: none;
}

@media (min-width: 1024px) {
    .header-cta {
        display: inline-flex;
    }
}

/* Mega Menu Styles */
.nav-item-dropdown {
    position: static;
}

.nav-item-dropdown.active .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mega-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    background: white;
    box-shadow: var(--shadow-xl);
    padding: var(--space-8) 0 0;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 100;
    border-top: 1px solid var(--color-gray-200);
}

.mega-menu-inner {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    text-align: left;
}

.mega-menu-section {
    display: flex;
    flex-direction: column;
}

.mega-menu-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.mega-menu-link {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.mega-menu-link:hover {
    background: var(--color-gray-50);
}

.mega-menu-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-50);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
}

.mega-menu-icon svg {
    width: 20px;
    height: 20px;
}

.mega-menu-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mega-menu-name {
    font-weight: 600;
    color: var(--color-gray-900);
    font-size: var(--font-size-sm);
}

.mega-menu-desc {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.mega-menu-footer {
    width: 100%;
    margin-top: var(--space-6);
    border-top: 1px solid var(--color-gray-200);
    text-align: center;
}

.mega-menu-footer-inner {
    width: 100%;
    height: 100%;
}

.mega-menu-footer-inner .mega-menu-all {
    display: flex;
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.mega-menu-footer-inner .mega-menu-all:hover {
    background: var(--color-gray-50);
}

.mega-menu-all {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--font-size-base);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.mega-menu-all:hover {
    color: var(--color-primary-dark);
    gap: var(--space-3);
}

/* Header Right Section */
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Mobile Menu Updates */
.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-gray-200);
    margin-bottom: var(--space-4);
}

.mobile-menu-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-gray-900);
}

.mobile-menu-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

.mobile-menu-close:hover {
    color: var(--color-gray-900);
}

.mobile-nav-divider {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mobile-nav-link svg {
    width: 20px;
    height: 20px;
    margin-right: var(--space-3);
    color: var(--color-primary);
    flex-shrink: 0;
}

.mobile-nav-all {
    color: var(--color-primary) !important;
    font-weight: 600;
}

/* Responsive Mega Menu */
@media (max-width: 1023px) {
    .mega-menu {
        display: none;
    }
}