/* Hide mobile navigation drawer on desktop screens */
@media (min-width: 769px) {
    .mobile-menu-drawer,
    .mobile-menu-overlay {
        display: none !important;
    }
}

@media (max-width: 1024px) {
    :root {
        --container-width: 960px;
    }
    
    .hero-section {
        gap: 32px;
        padding: 40px 0;
    }
    
    .hero-content h1 {
        font-size: 38px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    :root {
        --container-width: 720px;
    }
    
    /* Navigation changes */
    nav.nav-menu {
        display: none; /* Hidden by default on mobile, handled by JS navigation drawer */
    }
    
    .hamburger-btn {
        display: flex; /* Display burger button */
    }
    
    /* Responsive Mobile Menu Drawer injected dynamically */
    .mobile-menu-drawer {
        position: fixed;
        top: 0;
        right: -300px;
        width: 280px;
        height: 100vh;
        background: linear-gradient(180deg, #0B1120 0%, #050816 100%);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        border-left: 2px solid rgba(0, 98, 255, 0.2);
        border-top-left-radius: 20px;
        border-bottom-left-radius: 20px;
        box-shadow: -15px 0 40px rgba(0, 98, 255, 0.15);
        z-index: 2100;
        padding: 40px 24px 40px 24px;
        display: flex;
        flex-direction: column;
        gap: 12px;
        overflow-y: auto;
        transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .mobile-menu-drawer.active {
        right: 0;
    }
    
    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(5, 8, 22, 0.5);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        z-index: 2099;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .mobile-menu-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-nav-item {
        display: block;
        padding: 12px 16px;
        font-size: 14px;
        font-weight: 600;
        color: rgba(255, 255, 255, 0.75) !important;
        border-radius: var(--border-radius-sm);
        border: 1px solid transparent;
        transition: all 0.25s ease;
        text-decoration: none;
    }
    
    .mobile-nav-item:hover, .mobile-nav-item.active {
        background: rgba(0, 98, 255, 0.15) !important;
        color: #00D8F6 !important;
        border-color: rgba(0, 98, 255, 0.3);
        padding-left: 20px;
    }
    
    .mobile-nav-category {
        font-size: 10px;
        text-transform: uppercase;
        color: rgba(255, 255, 255, 0.4);
        letter-spacing: 1px;
        font-weight: 700;
        margin-top: 16px;
        padding-left: 16px;
        border-left: 2px solid var(--primary-color);
    }

    /* Hero section stacked */
    .hero-section {
        flex-direction: column-reverse;
        text-align: center;
        gap: 40px;
        padding: 30px 0;
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        width: 100%;
    }
    
    /* Layout Workspace/Sidebar stack */
    .tool-container {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .tool-workspace {
        padding: 20px;
    }
    
    /* Categories filter wrap */
    .category-filters {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 8px;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .filter-btn {
        flex-shrink: 0;
    }
}

@media (max-width: 576px) {
    :root {
        --header-height: 64px;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .hero-content h1 {
        font-size: 30px;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .stat-item {
        flex: 1 1 40%;
    }
    
    .tool-action-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .action-left, .action-right {
        flex-direction: column;
        gap: 8px;
    }
    
    .action-left .btn, .action-right .btn {
        width: 100%;
    }
    
    .result-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .seo-content-section {
        padding: 24px;
    }
    
    .seo-rich-text h1 {
        font-size: 24px;
    }
    
    .seo-rich-text h2 {
        font-size: 20px;
    }
}