/* --- Comprehensive Fluid Media Query Breakpoints --- */

@media (max-width: 991px) {
    .hero-title {
        font-size: 3rem;
    }
    .hero-subtitle {
        font-size: 1.5rem;
    }
    .section-title {
        font-size: 2rem;
    }
    .nav-toggle {
        display: flex;
    }
    .nav-menu {
        position: fixed;
        top: 73px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 73px);
        background: #050505;
        flex-direction: column;
        align-items: center;
        padding-top: 50px;
        transition: left 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .nav-menu.open {
        left: 0;
    }
    .timeline-wrapper::before {
        left: 20px;
    }
    .timeline-node {
        width: 100%;
        left: 0 !important;
        text-align: left !important;
        padding-left: 40px;
        padding-right: 0;
    }
    .timeline-node::after {
        left: 12px !important;
    }
    .security-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .project-filters, .cert-filters {
        overflow-x: auto;
        width: 100%;
        padding-bottom: 5px;
    }
    .test-card {
        padding: 20px;
    }
}