body {
    font-family: 'Inter', Arial, sans-serif;
    padding: 60px 40px 0 40px;
    margin: 0px 40px 0 40px;
}

.header {
    display: flex;
    flex-direction: row;
    align-items: center;
    color: black;
    padding: 5px 0px;
    font-size: 12px;
    font-family: 'Inter', Arial, sans-serif;
    position: fixed;
    top: 0;  
    width: 100%;
    z-index: 1000;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.h1 {
    font-weight: normal;
    font-family: 'Inter', Arial, sans-serif;
}

main, .responsive {
    background: linear-gradient(135deg, #e0e7ff 0%, #f3f8ff 100%);
    border-radius: 18px;
    box-shadow: 0 4px 24px rgba(21, 93, 252, 0.07);
}

.header svg {
    margin-top: -15px;
}

.header h1 {
    margin-top: -0.1px;
}

.nav-links {
    font-size: 17px;
    display: flex;
    justify-content: space-around;
    padding: 10px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    color: #333;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.menu-toggle:hover {
    background-color: #f3f3f5;
}

.nav-links.hidden {
    display: none;
}

.fff {
    margin-right: 10px;
    margin-left: 10px;
}

.nav-links a {
    font-family: 'Inter', Arial, sans-serif;
    text-decoration: none;
    color: #333;
    padding: 8px 20px;
    border-radius: 4px;
    transition: color 0.3s, background-color 0.3s;
}

.nav-links a:hover {
    color: #155dfc;
    background-color: #f3f3f5;
}

.search-form {
    display: flex;
    align-items: center;
}

.search-input {
    padding: 8px 20px;
    border: 1px solid #ccc;
    border-radius: 10px 10px 10px 10px;
    font-size: 14px;
    background-color: #f3f3f5;
}

.search-input:focus {
    outline: none;
    box-shadow: none;
    border-color: #ccc;
}

.search-input::placeholder {
    color: #aaa;
}

.responsive {
    display: flex;
    padding-top: 40px;
    box-sizing: border-box;
    padding-left: 30px;
    height: 680px;
}

.nav-links a.active {
    color: #155dfc;
    background-color: #f3f3f5;
}

.intro-text h2 {  
    font-size: 50px;
    font-weight: bold;
    margin-bottom: 10px;
}

.intro-text h3 {
    font-size: 50px;
    font-weight: bold;
    color: #155dfc;
    margin-top: 10px;
    margin-bottom: 20px;
}

.intro-text p {
    font-size: 20px;
    color: #333;
    line-height: 1.7; 
}

.body_man {
    background-color: #f3f3f5;
    border-radius: 10px;
    margin-right: 40px;
    margin-bottom: 50px;
    object-fit: cover;
    width: 580px;
    height: 400px;
}

.stats {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
}

.left {
    max-width: 600px;
    width: 100%;
    padding-left: 30px;
}

.right {
    margin-left: auto;
    display: flex;
    align-items: center;
}

.srt_lern {
    background-color: #155dfc;
    color: white;
    border: none;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    margin-right: 10px;
}

.Watch {
    background-color: transparent;
    color: #155dfc;
    border: 2px solid #155dfc;
    padding: 11px 28px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
}

.Watch:hover {
    background-color: #155dfc;
    color: white;
    transition: 0.3s;
}

.srt_lern:hover {
    background-color: white;
    color: #155dfc;
    transition: 0.3s;
}

.Watch a {
    text-decoration: none;
    color: inherit;
}

.stat {
    text-align: center;
    margin-right: 20px;
}

.stat h3 {
    font-size: 20px;
    margin: 10px 0px;
}

.stat p {
    margin-top: 8px;
}

h4 {
    font-size: 30px;
    font-weight: bold;
    margin-bottom: 20px;
    text-align: center;
    padding-top: 30px;
}

.deep_learn {
    text-align: center;
    font-size: 18px;
    color: #333;
    line-height: 1.7; 
    margin-bottom: 20px;
}

.line_2 {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.line_1 {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 20px;
}

.card a {
    text-decoration: none;
    color: inherit;
}



.card a:hover {
    box-shadow: 0 4px 20px rgba(21, 93, 252, 0.1);
    transition: 0.3s;
}

.card h5 {
    font-size: 20px;
    margin: 15px 20px 1px 20px;
    font-weight: normal;
}

.card p {
    font-size: 14px;
    color: #666;
    margin: 0px 20px;
    line-height: 1.5; 
    margin-bottom: 20px;
    
}

.card {
    width: 400px;
    height: 200px;
    border: 1px solid #e5e5e5;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.card:hover {
    transform: translateY(-8px) scale(1.07);
    box-shadow: 0 12px 20px rgba(0,0,0,0.15);
}

.icons-1 {
    width: 32px;
    height: 32px;
    margin: 25px 0px 5px 25px;
    border-radius: 10px;
    background-color: #fdf2f8;
    padding: 8px;
}

.icons-2 {
    width: 32px;
    height: 32px;
    margin: 25px 0px 5px 25px;
    border-radius: 10px;
    background-color: #faf5ff;
    padding: 8px;
}

.icons-3 {
    width: 32px;
    height: 32px;
    margin: 25px 0px 5px 25px;
    border-radius: 10px;
    background-color: #f0f9ff;
    padding: 8px;
}

.icons-4 {
    width: 32px;
    height: 32px;
    margin: 25px 0px 5px 25px;
    border-radius: 10px;
    background-color: #eef2ff;
    stroke: #eef2ff;
    padding: 8px;
}

.icons-5 {
    width: 32px;
    height: 32px;
    margin: 25px 0px 5px 25px;
    border-radius: 10px;
    background-color: #fff7ed;
    padding: 8px;
}

.icons-6 {
    width: 32px;
    height: 32px;
    margin: 25px 0px 5px 25px;
    border-radius: 10px;
    background-color: #eef2ff;
    padding: 8px;
    color: #4f39f6;
}

.icons-7 {
    width: 32px;
    height: 32px;
    margin: 25px 0px 5px 25px;
    border-radius: 10px;
    background-color: #f0fdf4;
    padding: 8px;
}

.icons-8 {
    width: 32px;
    height: 32px;
    margin: 25px 0px 5px 25px;
    border-radius: 10px;
    background-color: #f0fdfa;
    padding: 8px;
}

.footer {
    background-color: #155dfc;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
    border-radius: 18px;
    box-shadow: 0 4px 24px rgba(21, 93, 252, 0.07);
}

.footer p {
    margin: 0;
    color: white;
}

.social-icons {
    margin-top: 10px;
}

.social-icons a {
    margin: 0 10px;
    display: inline-block;
    text-decoration: none; 
}

.social-icons svg:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transition: 0.3s;
}

.social-icons svg {
    width: 40px;
    height: 40px;
    filter: grayscale(100%);
    transition: filter 0.3s;
    color: white;
}

.social-icons img:hover {
    filter: none;
}

.anatomy_page main {
    background: white;
}

.top_part_anatomy {
    display: inline-block;
}

.anatomy_page .back_click {
    text-decoration: none;
    font-size: 14px;
    margin-top: 25px;
    margin-left: -7px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 25px;
    border-radius: 5px;
    transition: background 0.3s;
    color: black;
}

.anatomy_page .back_click:hover {
    background: #f0f0f0;
}

.main_anatomy h2 {
    font-size: 32px;
    margin-left: 18px;
    color: black;
    margin-top: 15px;
}

.main_anatomy .description {
    font-size: 20px;
    color: #555;
    margin-left: 18px;
    margin-top: -5px;
}

.main_anatomy .course_details {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: 18px;
    margin-top: 15px;
    color: #555;
}

.level_anatomy {
    background-color: #fef9c2;
    color: #d89512;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
}

.progress {
    margin-left: 18px;
    margin-top: 20px;
    font-size: 14px;
    color: black;
    font-weight: 500;
}

.right_anatomy_img {
    display: inline-block;
    width: 380px;
    height: 260px;
    border-radius: 10px;
    margin: 80px 0px 0px 290px;
}

.main_anatomy {
    display: flex;
    align-items: center;
    padding: 0px 30px 30px 30px;
}

.right_anatomy_img img {
    width: 380px;
    height: 260px;
    border-radius: 10px;
    box-shadow: 0 4px 24px rgba(21, 93, 252, 0.07);
    object-fit: cover;
}

.progress_bar {
    width: 100%;
    background-color: #f3f3f5;
    border-radius: 10px;
    overflow: hidden;
    height: 8px;
    margin-top: 8px;
    margin-right: 300px;
    margin-left: 15px;
}

.progress_fill {
    height: 100%;
    background-color: black;
    text-align: center;
    line-height: 10px;
    color: white;
    font-weight: bold;
}

.module_section {
    margin-top: 30px;
    background-color: #f9fafb;
    border-radius: 18px;
    box-shadow: 0 4px 24px rgba(21, 93, 252, 0.07);
}

.scroller {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 35px;
    background-color: #ececf0;
    height: 35px;
    border-radius: 30px;
    cursor: pointer;
}

.scroller p {
    font-size: 14px;
    color: black;
    font-weight: 500;
    padding: 7.0px 190px;
    border-radius: 30px;
    transition: color 0.1s, background-color 0.3s;
}

.scroller p.active {
    background-color: white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.module_section h3 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
    color: black;
    font-weight: normal;
}

.module {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid #e5e5e5;
    background-color: white;
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    align-items: flex-start;
}

.module_content {
    display: flex;
    flex-direction: column;
}

.start_course {
    display: flex;
    align-items: center;
    gap: 3px;
    padding: 1px 10px;
    height: 27px;
    margin-left: auto;
    color: black; 
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    margin-top: 20px;
}

.start_course p {
    font-size: 14px;
    font-weight: 500;
}

.start_course:hover {
    background-color: #f3f3f5;
    transition: 0.3s;
}

.module:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 20px rgba(0,0,0,0.15);
}

.module h4 {
    margin: 0;
    font-size: 18px;
    font-weight: 500;
    color: black;
}

.module p {
    margin: 5px 0 0 0;
    font-size: 14px;
    color: black;
    line-height: 1.5; 
}

.login {
    background-color: transparent;
    color: #155dfc;
    border: 2px solid #155dfc;
    padding: 11px 28px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    margin-right: 10px;
}

.signup {
    background-color: #155dfc;
    color: white;
    border: 2px solid #155dfc;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
}

.login:hover {
    background-color: #155dfc;
    color: white;
    transition: 0.3s;
}

.signup:hover {
    background-color: white;
    color: #155dfc;
    transition: 0.3s;
}

.login a, .signup a {
    text-decoration: none;
    color: inherit;
}

/* RESPONSIVE MEDIA QUERIES */

/* Large Desktop (1200px and up) */
@media (max-width: 1400px) {
    .responsive {
        height: auto;
        padding: 30px 20px;
    }
    
    .body_man {
        width: 480px;
        height: 320px;
        margin-right: 20px;
    }
    
    .right_anatomy_img {
        width: 320px;
        height: 220px;
        margin: 60px 0px 0px 200px;
    }
    
    .right_anatomy_img img {
        width: 320px;
        height: 220px;
    }
   

}

/* Desktop and Tablet (1200px and below) */
@media (max-width: 1200px) {
    body {
        padding: 60px 20px 0 20px;
        margin: 0px 20px 0 20px;
    }

    .responsive {
        flex-direction: column;
        align-items: center;
        height: auto;
        padding: 20px;
    }
    
    .left {
        max-width: 100%;
        padding-left: 0;
        text-align: center;
        margin-bottom: 30px;
    }
    
    .right {
        margin-left: 0;
        margin-top: 20px;
    }
    
    .body_man {
        width: 100%;
        max-width: 500px;
        height: 300px;
        margin: 20px 0;
    }
    
    .intro-text h2, .intro-text h3 {
        font-size: 36px;
    }
    
    .intro-text p {
        font-size: 18px;
    }
    
    .line_1, .line_2 {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .card {
        width: 350px;
        height: 180px;
    }
    .card h5 {
        font-size: 15px;
        margin: 10px 15px 0 15px;
    }
    
    .main_anatomy {
        flex-direction: column;
        text-align: center;
    }
    
    .right_anatomy_img {
        margin: 20px 0 0 0;
        width: 100%;
        max-width: 400px;
        height: 250px;
    }
    
    .right_anatomy_img img {
        width: 100%;
        max-width: 400px;
        height: 250px;
    }
    
    .progress_bar {
        margin-right: 0;
        max-width: 400px;
    }
}

/* Tablet (768px and below) */
@media (max-width: 768px) {
    body {
        padding: 80px 15px 0 15px;
        margin: 0px 15px 0 15px;
    }
    
    .header {
        flex-direction: row;
        justify-content: space-evenly;
        align-items: center;
        padding: 10px 20px;
        height: auto;
    }
    
    .menu-toggle {
        display: block;
        margin-bottom: 15px;
        margin-right: 70px;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        gap: 0;
        width: 100%;
        padding: 0;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        border-radius: 0 0 8px 8px;
        z-index: 999;
    }
    
    .nav-links.show {
        display: flex;
    }
    .nav-links {
        font-size: 16px;
    }
    
    
    .nav-links a {
        padding: 15px 20px;
        border-bottom: 1px solid #f0f0f0;
        width: 100%;
        text-align: left;
    }
    
    .nav-links a:last-child {
        border-bottom: none;
    }
    
    .search-form {
        display: none; /* Hide search on mobile, or you can show it in the dropdown */
    }
    
    .responsive {
        padding: 15px;
        margin-top: 20px;
    }
    
    .intro-text h2, .intro-text h3 {
        font-size: 28px;
        margin-bottom: 15px;
    }
    
    .intro-text p {
        font-size: 16px;
    }
    
    .stats {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
    
    .stat {
        margin-right: 0;
        margin-bottom: 10px;
    }
    
    .srt_lern, .Watch, .login, .signup {
        padding: 10px 20px;
        font-size: 14px;
        margin: 5px;
    }
    
    .line_1, .line_2 {
        flex-direction: column;
        align-items: center;
    }
    
    .card {
        width: 100%;
        max-width: 350px;
        height: auto;
        min-height: 160px;
    }
    
    .card h5 {
        font-size: 18px;
        margin: 10px 15px;
    }
    
    .card p {
        font-size: 13px;
        margin: 0px 15px 15px 15px;
    }
    
    h4 {
        font-size: 24px;
        padding-top: 20px;
    }
    
    .deep_learn {
        font-size: 16px;
        padding: 0 10px;
    }
    
    .main_anatomy h2 {
        font-size: 24px;
        margin-left: 0;
        text-align: center;
    }
    
    .main_anatomy .description {
        font-size: 16px;
        margin-left: 0;
        text-align: center;
        padding: 0 10px;
    }
    
    .main_anatomy .course_details {
        justify-content: center;
        margin-left: 0;
        flex-wrap: wrap;
    }
    
    .progress {
        margin-left: 0;
        text-align: center;
    }
    
    .scroller p {
        padding: 7px 50px;
        font-size: 12px;
    }
    
    .module {
        flex-direction: column;
        align-items: flex-start;
        padding: 15px;
    }
    
    .start_course {
        margin-left: 0;
        margin-top: 15px;
        align-self: flex-end;
    }
    
    .social-icons svg {
        width: 35px;
        height: 35px;
        margin: 0 8px;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    body {
        padding: 80px 10px 0 10px;
        margin: 0px 10px 0 10px;
    }
    
    .header {
        padding: 8px 15px;
    }
    
    .nav-links {
        font-size: 15px;
    }
    
    .nav-links a {
        padding: 6px 15px;
    }
    
    .responsive {
        padding: 10px;
        border-radius: 12px;
    }
    
    .intro-text h2, .intro-text h3 {
        font-size: 24px;
        line-height: 1.3;
    }
    
    .intro-text p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    .body_man {
        height: 250px;
    }
    
    .srt_lern, .Watch, .login, .signup {
        padding: 8px 16px;
        font-size: 13px;
        width: 100%;
        margin: 5px 0;
        text-align: center;
    }
    
    .stats {
        gap: 10px;
    }
    
    .stat h3 {
        font-size: 18px;
    }
    
    .stat p {
        font-size: 12px;
    }
    
    .card {
        max-width: 100%;
        margin: 0 5px 10px 5px;
    }
    
    .card h5 {
        font-size: 16px;
        margin: 8px 12px;
    }
    
    .card p {
        font-size: 12px;
        margin: 0px 12px 12px 12px;
    }
    
    h4 {
        font-size: 20px;
        padding: 15px 10px 0 10px;
    }
    
    .deep_learn {
        font-size: 14px;
        padding: 0 5px;
    }
    
    .main_anatomy h2 {
        font-size: 20px;
        padding: 0 10px;
    }
    
    .main_anatomy .description {
        font-size: 14px;
        padding: 0 10px;
    }
    
    .right_anatomy_img {
        height: 200px;
    }
    
    .right_anatomy_img img {
        height: 200px;
    }
    
    .module_section {
        margin-top: 20px;
        border-radius: 12px;
    }
    
    .scroller {
        margin-top: 20px;
        height: 30px;
    }
    
    .scroller p {
        padding: 5px 30px;
        font-size: 11px;
    }
    
    .module {
        padding: 12px;
    }
    
    .module h4 {
        font-size: 16px;
    }
    
    .module p {
        font-size: 12px;
    }
    
    .start_course {
        height: 24px;
        padding: 0 8px;
    }
    
    .start_course p {
        font-size: 12px;
    }
    
    .footer {
        border-radius: 12px;
        padding: 15px 0;
        margin-top: 30px;
    }
    
    .footer p {
        font-size: 12px;
        padding: 0 10px;
    }
    
    .social-icons svg {
        width: 30px;
        height: 30px;
        margin: 0 5px;
    }
}

/* Extra Small Mobile (360px and below) */
@media (max-width: 360px) {
    body {
        padding: 70px 5px 0 5px;
        margin: 0px 5px 0 5px;
    }
    
    .header {
        padding: 5px 10px;
    }
    
    .intro-text h2, .intro-text h3 {
        font-size: 20px;
    }
    
    .intro-text p {
        font-size: 13px;
    }
    
    .card {
        margin: 0 0 10px 0;
    }
    
    .scroller p {
        padding: 5px 20px;
    }
    
    .module {
        padding: 10px;
    }
}









/* Контейнер */
.courses-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Заголовок */
.courses-header {
    text-align: center;
    margin-bottom: 50px;
}
.courses-header h1 {
    font-size: 42px;
    font-weight: 700;
    background: linear-gradient(135deg, #2c45b6 0%, #352ac6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
}
.courses-header .divider {
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, #304bc1, #2d48df);
    margin: 15px auto;
    border-radius: 2px;
}

/* Сетка */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
}

/* Карточка */
.course-card {
    background: #fff;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
}
.course-card .card-top {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, #667eea, #764ba2);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: left;
}
.course-card .card-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}
.course-card .card-icon span {
    color: white;
    font-size: 24px;
    font-weight: 600;
}
.course-card h3 {
    color: #2d3748;
    font-size: 20px;
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
}
.course-card .card-footer {
    margin-top: 15px;
    display: flex;
    align-items: center;
    color: #667eea;
    font-size: 14px;
    font-weight: 500;
    transition: transform 0.3s ease;
}
.course-card .card-footer span:last-child {
    margin-left: 8px;
    transition: transform 0.3s ease;
}

/* Hover */
.course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.25);
    border-color: #667eea;
}
.course-card:hover .card-top {
    transform: scaleX(1);
}
.course-card:hover .card-footer span:last-child {
    transform: translateX(5px);
}
.course-card:hover .card-icon {
    transform: scale(1.05);
}

/* 📱 Респонсив */
@media (max-width: 768px) {
    .courses-header h1 {
        font-size: 32px;
    }
    .course-card {
        padding: 20px;
    }
    .course-card h3 {
        font-size: 18px;
    }
}
@media (max-width: 480px) {
    .courses-header h1 {
        font-size: 26px;
    }
    .course-card h3 {
        font-size: 16px;
    }
    .courses-grid {
        grid-template-columns: 1fr; /* одна колонка на телефоне */
    }
}