@media (max-width: 1100px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 30px;
    }
    .footer-brand {
        grid-column: span 1;
    }
}

@media (max-width: 992px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-6 {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .certifications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .hero-badge {
        padding: 12px 10px;
    }
    .hero-badge svg {
        width: 22px;
        height: 22px;
    }
    .stat-number {
        font-size: 28px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-h: 66px;
        --section-space: 60px;
        --section-space-mobile: 40px;
    }

    .mobile-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        bottom: 0;
        background: #001510;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        opacity: 0;
        visibility: hidden;
        transform: translateX(100%);
        transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
        overflow-y: auto;
        z-index: 999;
    }

    .main-nav.active {
        opacity: 1;
        visibility: visible;
        transform: translateX(0);
    }

    .main-nav .menu {
        flex-direction: column;
        width: 100%;
    }

    .main-nav .menu > li > a {
        padding: 12px 0;
        font-size: 15px;
        border-radius: 0;
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }

    .main-nav .menu > li > a::after {
        display: none;
    }

    .main-nav .sub-menu {
        position: static;
        background: transparent;
        border: none;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding: 0 0 0 16px;
        display: none;
        margin: 0;
    }

    .main-nav .sub-menu.open {
        display: block;
    }

    .main-nav .sub-menu li a {
        color: rgba(255,255,255,0.5);
        padding: 10px 0;
    }

    .nav-cta {
        width: 100%;
        margin-left: 0;
    }

    .nav-cta .btn {
        width: 100%;
        justify-content: center;
    }

    .grid-2,
    .grid-3,
    .blog-grid,
    .about-grid {
        grid-template-columns: 1fr;
    }

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

    .content-with-sidebar {
        grid-template-columns: 1fr;
    }

    .hero-section {
        min-height: auto;
        padding: calc(var(--header-h) + 40px) 0 40px;
    }

    .hero-title-white,
    .hero-title-green {
        font-size: clamp(26px, 7vw, 32px);
    }

    .hero-badges {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        max-width: 100%;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-page {
        padding: calc(var(--header-h) + 40px) 0 40px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .stat-item {
        padding: 12px 16px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

    .section-title-wrapper {
        margin-bottom: 32px;
    }

    .cta-section .btn-group {
        flex-direction: column;
        align-items: center;
    }

    .cta-section {
        padding: 60px 0;
    }

    .page-404 h1 {
        font-size: 80px;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .about-image img {
        height: 280px;
    }

    .about-image .about-map {
        height: 280px;
    }

    .about-badge {
        display: none;
    }

    .contact-grid {
        gap: 32px;
    }

    .clients-track {
        gap: 24px;
    }
    .client-item {
        gap: 6px;
    }
}

@media (max-width: 576px) {
    .grid-4,
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    :root {
        --container-padding: 16px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 13px;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: 14px;
    }

    .hero-badges {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-badge {
        padding: 10px 8px;
    }

    .hero-badge-title {
        font-size: 11px;
    }

    .hero-badge-subtitle {
        font-size: 10px;
    }

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

    .section {
        padding: 40px 0;
    }

    .about-section,
    .services-section,
    .certifications-section,
    .contact-section {
        padding: 40px 0;
    }

    .stats-section {
        padding: 32px 0;
    }

    .clients-section {
        padding: 32px 0;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 769px) {
    .main-nav .menu > li:hover .sub-menu {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
    }

    .hero-badges {
        grid-template-columns: repeat(4, 1fr);
    }
}