@media screen and (max-width: 1400px) {
    .main_block {
        background-size: cover;
    }
    
    .cart_ab {
        padding: 20px;
    }
    
    .vstuplenie {
        background-size: cover;
    }
 
}
@media screen and (max-width: 1200px) {
    .logo {
        padding: 5px;
        width: 14%;
    }
    
    nav {
        width: 52%;
    }
    
    p.title_main_block {
        font-size: 38px;
    }
    
    p.description_main_block {
        font-size: 18px;
    }
    
    .main_b {
        padding-top: 70px;
        padding-bottom: 70px;
    }
    
    .main_right {
        padding: 0 20px;
    }
    
    h5.card-title {
        font-size: 18px;
    }
    
    p.card-text {
        font-size: 14px;
    }
    
    small.text-muted {
        font-size: 14px;
    }
    
    p.title_about {
        font-size: 38px;
    }
    
    p.description_about {
        font-size: 18px;
    }
    
    p.title_cart_ab {
        font-size: 18px;
    }
    
    p.description_cat_ab {
        font-size: 14px;
    }
    
    .about_cart {
        grid-gap: 10px;
    }
    
    .cart_ab {
        padding: 10px;
    }
    
    img.card-img-top {
        height: 250px;
    }
    
    p.title_vstup {
        font-size: 30px;
    }
    
    p.text_vstup {
        font-size: 18px;
    }
    
    form#filter-form select {
        font-size: 16px;
    }
    
    a.reset-button {
        font-size: 16px;
    }
    
    .base_spec img {
        height: 200px;
    }
    
    h4.name_spec {
        font-size: 18px;
    }
    
    p.spec_position {
        font-size: 14px;
    }
    
    p.spec_about {
        font-size: 14px;
    }
    
    .category_course li a {
        font-size: 16px;
    }
    
    .course-item h3 {
        font-size: 18px;
    }
    
    .course-item {
        font-size: 14px;
    }
    
    .Footer_logo {
        width: 20%;
    }
    
    .footer_navi {
        width: 42%;
    }
    
    p.contact_footer {
        font-size: 14px;
    }
    
    .footer_copiright {
        font-size: 14px;
    }
}



@media screen and (max-width: 998px) {
    header.custom-header {
    display: block !important;
}
    nav {
        display: none;
    }
    
    .header {
        justify-content: flex-start;
    }
    
    .lang {
        margin: 0 10px;
    }
    
    .main_b {
        padding-top: 30px;
        padding-bottom: 30px;
    }
    
    a.next_block {
        padding-bottom: 20px;
    }
    
    .about_cart {
        grid-template-columns: 1fr 1fr;
    }
    
    .card-body {
        padding: 5px;
    }
    
    img.card-img-top {
        height: 292px;
    }
    
    .vstupit {
        display: block;
        text-align: center;
        width: 100%;
    }
    
    .vstupit_left {
        width: 100%;
    }
    
    .vstupit_right {
        width: 100%;
        justify-content: center;
    }
    
    form#filter-form select {
        padding: 3px;
        height: 40px;
        margin: 0 3px;
    }
    
    a.reset-button {
        height: 40px;
        padding: 8px;
    }
    
    .base_spec {
        grid-template-columns: 1fr 1fr;
    }
    
    .base_spec img {
        height: 350px;
    }
    
    .footer_navi {
        display: none;
    }
    
    .footer_copiright {
        display: block;
        text-align: center;
    }
    
    p.contact_footer {
        text-align: center;
        margin: 10px 0;
    }
    
    .footer {
        margin-top: 0px;
    }
    .custom-header {
      position: fixed;
      top: 0;
      right: 0;
      width: 70px;
      background: #0159d9;
      z-index: 1000;
      box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    
    .container {
      max-width: 1140px;
      margin: 0 auto;
      padding: 0.75rem 1rem;
    }
    
    .header-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .logo {
      font-weight: bold;
      font-size: 1.25rem;
      text-decoration: none;
      color: #000;
    }
    
    .menu-toggle {
      font-size: 1.5rem;
      background: none;
      border: none;
      cursor: pointer;
    }
    
    .mobile-menu {
      position: fixed;
      top: 0;
      right: -100%;
      width: 100%;
      height: 100vh;
      background: #0159d9;
      transition: right 0.4s ease;
      display: flex;
      flex-direction: column;
      padding: 2rem;
    }
    
    .mobile-menu.active {
      right: 0;
    }
    
    .mobile-menu .close-btn {
      align-self: flex-end;
      font-size: 2rem;
      background: none;
      border: none;
      margin-bottom: 2rem;
      cursor: pointer;
      z-index: 9;
      position: absolute;
      top: 0;
    }
    
    .mobile-menu ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    
    .mobile-menu li {
      margin: 1rem 0;
    }
    
    .mobile-menu a {
      text-decoration: none;
      font-size: 1.2rem;
      color: #fff !important;
      transition: color 0.3s ease;
    }
    
    .mobile-menu a:hover {
      color: #007bff;
    }
    button#menuToggle {
        color: #fff;
        margin-left: 8px;
    }
    button#closeMenu {
        color: #fff;
        margin-left: 8px;
    }
    nav a:before {
    display: none;
}

form#filter-form select {
    width: 100%;
}
}



@media screen and (max-width: 768px) {
    .cours_in {
    grid-template-columns: 1fr;
}
    .news_list_in {
    grid-template-columns: 1fr;
}
    .file_forms {
    display: block;
}

.form-group {
    width: 100%;
    margin-bottom: 0;
    padding-bottom: 10px;
}
        form#filter-form select {
    font-size: 14px;
}
    .main_b {
        display: block;
        text-align: center;
    }
    
    .main_left {
        width: 100%;
        padding: 0;
    }
    
    p.inass_link {
        margin-top: 20px;
    }
    
    .main_right {
        width: 100%;
        margin-top: 30px;
    }
    
    .main_right {
        display: none;
    }
    
    div#about {
        padding: 0px 0;
    }
    
    .block_in_a {
        background-size: cover;
    }
    
    form#filter-form {
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-gap: 10px;
    }
    
    .form_vstup {
        grid-template-columns: 1fr;
    }
    
    .block_vstuplenie button {
        height: 50px;
        font-size: 18px;
    }
    
    .category_course li a {
        font-size: 12px;
        padding: 5px;
    }
    
    .course-item h3 {
        padding: 5px;
    }
    
    .course-item p {
        padding: 5px;
    }
    .news_in_page img {
    max-width: 100%;
    float: none;
    margin-right: 0px;
}
.form-group2 label span {height: auto !important;padding-left: 10px;}

.form-group2 label {
    margin: 20px 0;
    display: flex;
    height: auto;
}
}




@media screen and (max-width: 500px) {
    .card-body {
}
    .inassociac a {
        padding: 10px;
    }
    
    .header {
        display: block;
        text-align: center;
    }
    
    .logo {
        width: 100%;
    }
    
    .logo img {
        width: 50%;
    }
    
    .lang {
        display: block;
        margin: 20px;
    }
    
    .lang a {
        padding: 5px 10px;
    }
    
    .about_cart {
        grid-template-columns: 1fr;
    }
    
    .base_spec {
        grid-template-columns: 1fr;
    }
    
    .category_course {
        display: none;
    }
    
    .course {
        grid-template-columns: 1fr;
    }
}