.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.site-header.transparent {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    box-shadow: none;
}

.site-header.solid {
    background: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Стили для прозрачного состояния */
.site-header.transparent .nav-item a {
    color: white;
}

.site-header.transparent .nav-item a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

.site-header.transparent .search-box {
    background: rgba(255, 255, 255, 0.1);
}

.site-header.transparent .search-box input {
    color: white;
}

.site-header.transparent .search-box input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.site-header.transparent .search-button {
    color: rgba(255, 255, 255, 0.6);
}

.site-header.transparent .search-button:hover {
    color: white;
}

.site-header.transparent .logo img {
    filter: brightness(0) invert(1);
}

/* Стили для непрозрачного состояния */
.site-header.solid .nav-item a {
    color: var(--text-color);
}

.site-header.solid .nav-item a:hover {
    background-color: var(--background-color);
    color: var(--primary-color);
}

.site-header.solid .search-box {
    background: var(--background-color);
}

.site-header.solid .search-box input {
    color: var(--text-color);
}

.site-header.solid .search-box input::placeholder {
    color: var(--secondary-color);
}

.site-header.solid .search-button {
    color: var(--secondary-color);
}

.site-header.solid .search-button:hover {
    color: var(--primary-color);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    height: 100%;
}

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

.main-nav {
    flex-grow: 1;
    position: static; /* Важно для правильного позиционирования мега-меню */
}

.main-nav ul {
    display: flex;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}

.nav-item {
    position: static; /* Важно для правильного позиционирования мега-меню */
}

.nav-item a {
    display: block;
    padding: 1.25rem 0.75rem;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color 0.2s;
    white-space: nowrap;
}

.nav-item a:hover {
    color: var(--primary-color);
}

/* Мега-меню */
.mega-menu {
    display: none;
    position: absolute;
    left: 0;
    top: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    padding: 1.5rem;
    z-index: 1000;
    border-radius: 0.75rem;
    border: 1px solid rgba(0, 0, 0, 0.08);
    opacity: 0;
    transition: opacity 0.2s, transform 0.2s;
    transform: translateY(-10px);
    margin-top: 0;
    max-height: 80vh;
    overflow-y: auto;
    width: max-content;
    min-width: 300px;
    max-width: 1000px;
}

.has-dropdown:hover .mega-menu,
.mega-menu:hover {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* Создаем невидимую область между пунктом меню и выпадающим меню для плавного перехода */
.has-dropdown::after {
    content: '';
    position: absolute;
    left: 0;
    top: 100%;
    width: 100%;
    height: 0.75rem;
    background: transparent;
    z-index: 999;
    pointer-events: none;
}



.mega-menu-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    width: max-content;
}

.mega-menu-container:has(.menu-column:nth-child(2)) {
    grid-template-columns: repeat(2, 1fr);
}

.menu-column {
    min-width: 0;
    width: 100%;
    max-width: 580px;
}

.menu-column h3 {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary-color) !important;
    margin: 0 0 1rem 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    padding-bottom: 0.5rem;
}

.menu-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 2rem;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

.menu-column ul {
    display: block;
    margin: 0;
    padding: 0;
    column-count: 1;
    column-gap: 1.25rem;
}

.menu-column ul:has(li:nth-child(21)) {
    column-count: 2;
}

.menu-column ul:has(li:nth-child(41)) {
    column-count: 3;
}

.menu-column li {
    margin: 0;
    padding: 0;
    width: 100%;
    break-inside: avoid;
    page-break-inside: avoid;
}

.menu-column a {
    display: block;
    padding: 0.25rem 0;
    color: var(--text-color) !important;
    font-size: 0.875rem;
    font-weight: normal;
    transition: color 0.2s;
    opacity: 0.85;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}

.menu-column a:hover {
    color: var(--primary-color) !important;
    opacity: 1;
}

.has-dropdown {
    position: relative;
}


/* Убираем затемнение фона для выпадающего меню */

/* Стили для прозрачного хедера */
.site-header.transparent .mega-menu {
    background: rgba(30, 30, 30, 0.98);
}

.site-header.transparent .menu-column h3 {
    color: rgba(255, 255, 255, 0.6) !important;
}

.site-header.transparent .menu-column h3::after {
    background: rgba(255, 255, 255, 0.3);
}

.site-header.transparent .menu-column a {
    color: rgba(255, 255, 255, 0.8) !important;
}

.site-header.transparent .menu-column a:hover {
    color: white !important;
}

/* Скрываем пункт "Курсы" на ПК */
.desktop-hide {
    display: none;
}

@media (max-width: 768px) {
    .desktop-hide {
        display: block;
    }
}

/* Медиа-запросы для адаптивности */
@media (max-width: 1024px) and (min-width: 769px) {
    .mega-menu {
        min-width: 450px;
        max-width: 600px;
    }
    .mega-menu-container {
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .mega-menu {
        padding: 1.5rem 0;
    }
    
    .mega-menu-container {
        gap: 1.5rem;
        grid-template-columns: 1fr;
    }
    
    .menu-column h3 {
        margin-bottom: 1rem;
    }
}

/* Поиск */
.search-box {
    position: relative;
    width: 280px;
    min-width: 200px;
    background: var(--background-color);
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    flex-shrink: 0;
}

.search-box input {
    width: 100%;
    border: none;
    background: none;
    padding: 0.5rem;
    font-size: 0.9375rem;
    color: var(--text-color);
}

.search-button {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--secondary-color);
    padding: 0.5rem;
    cursor: pointer;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Медиа-запросы */
@media (max-width: 1200px) {
    .nav-item a {
        padding: 1.25rem 0.5rem;
        font-size: 0.875rem;
    }
    
    .search-box {
        width: 240px;
    }
}

@media (max-width: 1024px) {
    .header-container {
        padding: 0.2rem 1rem;
        gap: 1rem;
    }
    
    .nav-item a {
        padding: 1.25rem 0.4rem;
        font-size: 0.875rem;
    }
    
    .search-box {
        width: 220px;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
    
    .search-box {
        width: 100%;
    }
}

.menu-count {
    font-size: 0.75rem;
    color: var(--secondary-color);
    margin-left: 0.25rem;
} 

.mobile-courses-button {
    display: none;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    white-space: nowrap;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

@media (max-width: 768px) {
    .mobile-courses-button {
        display: block;
        margin-right: 16px;
    }
    
    .search-box {
        display: none;
    }
}

.has-dropdown:hover > a,
.has-dropdown:focus-within > a,
.has-dropdown:has(.mega-menu:hover) > a {
    background-color: rgba(255, 255, 255, 0.1);
} 

.school-menu-item {
    display: flex !important;
    align-items: center !important;
    gap: 8px;
    line-height: 1;
    padding: 0.5rem 0;
    width: 100%;
}

.school-menu-logo {
    width: 20px;
    height: 20px;
    object-fit: contain;
    display: block;
    flex-shrink: 0;
}

/* Мобильное меню */
.mobile-menu .school-menu-item {
    display: flex !important;
    align-items: center !important;
    gap: 10px;
    line-height: 1;
    padding: 0.75rem 0;
    width: 100%;
}

.mobile-menu .school-menu-logo {
    width: 24px;
    height: 24px;
    object-fit: contain;
    display: block;
    flex-shrink: 0;
} 

@media (max-width: 768px) {
  .site-header.solid .mobile-menu-toggle span {
    background: #4942E4 !important;
  }
  .mobile-menu-toggle span {
    background: #4942E4 !important;
  }
  .site-header.solid .mobile-courses-button {
    background: #4942E4 !important;
    color: #fff !important;
    border: none !important;
    box-shadow: none !important;
  }
  .site-header.transparent .mobile-courses-button {
    background: rgba(255,255,255,0.1) !important;
    color: #fff !important;
    border: 1px solid rgba(255,255,255,0.2) !important;
    box-shadow: none !important;
  }
  .mobile-courses-button {
    background: #4942E4 !important;
    color: #fff !important;
    border: none !important;
    box-shadow: none !important;
  }
  .site-header.solid .logo img {
    filter: none !important;
  }
}