.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
}

.menu-toggle span {
    height: 3px;
    width: 100%;
    background-color: #00d0ff;
    border-radius: 3px;
    transition: all 0.3s;
}

@media (max-width: 900px) {
    header {
        flex-wrap: wrap;
    }
    
    .nav-container {
        order: 3;
        width: 100%;
        margin-top: 15px;
        display: none;
    }
    
    .nav-container.active {
        display: block;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    nav {
        margin-right: 0;
        width: 100%;
    }
    
    nav ul {
        flex-direction: column;
        background: rgba(0, 30, 60, 0.9);
        border-radius: 8px;
        padding: 10px;
        border: 1px solid rgba(0, 162, 255, 0.3);
    }
    
    nav ul li {
        margin: 8px 0;
        text-align: center;
    }
    
    nav ul li a {
        padding: 8px 0;
        display: block;
    }
    
    nav ul li a::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    nav ul li a:hover::after {
        width: 80%;
    }
    
    .language-switcher {
        margin-left: auto;
    }
    
    .logo-image {
        height: 130px;
    }
    
    .logo-text {
        font-size: 36px;
    }
    
    .logo-subtitle {
        font-size: 16px;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .hero p {
        font-size: 15px;
    }
    
    .feature {
        padding: 20px;
    }
    
    .page-content {
        padding: 20px;
    }
}

@media (max-width: 600px) {
    .logo-image {
        height: 110px;
    }
    
    .logo-text {
        font-size: 30px;
    }
    
    .hero h1 {
        font-size: 24px;
    }
    
    .download-btn {
        padding: 12px 30px;
        font-size: 14px;
    }
    
    .feature {
        padding: 15px;
    }
    
    .page-content {
        padding: 15px;
    }
    
    .social-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
}

@media (min-width: 901px) {
    .nav-container {
        display: flex !important;
    }
    
    .menu-toggle {
        display: none;
    }
}

@media (max-width: 900px) {
    .page-content h3 {
        font-size: 24px;
    }
    
    .page-content h4 {
        font-size: 18px;
    }
}

@media (max-width: 600px) {
    .page-content h3 {
        font-size: 22px;
    }
    
    .page-content h4 {
        font-size: 16px;
    }
    
    .page-content p {
        font-size: 15px;
    }
}