/**
 * Quantors — Responsive & Mobile Menu Styles
 */

/* Burger Button */
.burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 40px;
    height: 40px;
    z-index: 101;
    position: relative;
    padding: 5px;
}

.burger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

.burger.active span:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

.burger.active span:nth-child(2) {
    transform: translateY(-4px) rotate(-45deg);
}

/* Media Queries */

@media (max-width: 1200px) {
    :root {
        --container-width: 960px;
    }
    
    .hero-title {
        font-size: 52px;
        letter-spacing: 0.05em;
    }
}

@media (max-width: 992px) {
    :root {
        --container-width: 720px;
    }

    .header.scrolled {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        background: rgba(13, 15, 18, 0.98) !important;
    }

    .burger {
        display: flex;
    }

    .nav-list {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--bg-main);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 30px;
        transition: 0.6s cubic-bezier(0.77, 0, 0.175, 1);
        z-index: 100;
        visibility: hidden;
    }

    .header.menu-open .nav-list {
        right: 0;
        visibility: visible;
    }

    .header-actions {
        position: relative;
        z-index: 101;
        display: flex;
        align-items: center;
        gap: 15px;
    }

    .nav-link {
        font-size: 24px;
        text-transform: uppercase;
    }

    .mobile-only {
        display: block;
    }

    .desktop-only {
        display: none;
    }

    .header-phone-btn {
        display: none !important;
    }

    .mobile-lang-switcher {
        display: flex !important;
        margin-right: 15px;
        font-size: 16px;
    }

    .nav-lang-item {
        display: none !important;
    }

    .nav-phone-item {
        display: block !important;
        margin-top: 20px;
        width: 100%;
        padding: 0 40px;
    }

    .menu-cta {
        margin-top: 20px;
        width: 100%;
        padding: 0 40px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .services-grid {
        grid-template-columns: 1fr 1fr;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .contacts-grid {
        grid-template-columns: 1fr;
    }

    .cta-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .cta-actions {
        justify-content: flex-start;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 50px;
    }
}

@media (max-width: 768px) {
    :root {
        --container-width: 540px;
    }

    .hero-title {
        font-size: 42px;
        letter-spacing: 0.07em;
    }

    .section-title {
        font-size: 32px;
    }

    .section-heading-shape {
        margin-top: 5px;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .captcha-wrapper {
        gap: 10px;
        flex-wrap: wrap;
    }

    .captcha-img {
        width: 150px;
    }
}

@media (max-width: 576px) {
    :root {
        --container-width: 100%;
    }

    .hero-title {
        font-size: 32px;
        letter-spacing: 0.08em;
    }

    .hero-btns {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-gallery {
        grid-template-columns: 1fr;
    }
    
    .about-img:nth-child(2) {
        margin-top: 0;
    }
}