@media (max-width: 1100px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .section {
        padding: 90px 0;
    }
    .hero-grid,
    .two-col,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    .hero {
        padding-top: 100px;
    }
    .hero-copy {
        order: 2;
    }
    .hero-visual {
        order: 1;
        max-width: 400px;
        margin: 0 auto;
    }
    .header-inner {
        grid-template-columns: auto auto 1fr;
        gap: 0.8rem;
    }
    /* ── Desktop nav hidden on mobile ── */
    .site-nav {
        display: none;
    }
    /* ── Morphing toggle button ── */
    .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 46px;
        height: 46px;
        border-radius: 50%;
        background: var(--surface);
        border: 1px solid var(--line);
        color: var(--text);
        cursor: pointer;
        transition: background 0.2s ease, border-color 0.25s ease, transform 0.2s ease;
        position: relative;
        z-index: 1600;
    }
    .nav-toggle:hover {
        border-color: var(--primary);
        transform: scale(1.08);
    }
    /* hamburger icon lines morph */
    .nav-toggle .hamburger-icon {
        overflow: visible;
    }
    .nav-toggle .h-top,
    .nav-toggle .h-mid,
    .nav-toggle .h-bot {
        transform-origin: center;
        transition: transform 0.35s cubic-bezier(0.77, 0, 0.175, 1), opacity 0.25s ease;
    }
    .nav-toggle[aria-expanded="true"] .h-top {
        transform: translateY(6px) rotate(45deg);
    }
    .nav-toggle[aria-expanded="true"] .h-mid {
        opacity: 0;
        transform: scaleX(0);
    }
    .nav-toggle[aria-expanded="true"] .h-bot {
        transform: translateY(-6px) rotate(-45deg);
    }
    .nav-toggle[aria-expanded="true"] {
        background: var(--primary);
        border-color: var(--primary);
        color: #fff;
    }
    /* ── Mobile full-screen overlay ── */
    .mobile-nav-overlay {
        position: fixed;
        inset: 0;
        z-index: 1550;
        visibility: hidden;
    }
    .mobile-nav-overlay.open {
        visibility: visible;
    }
    /* blurred backdrop */
    .mob-backdrop {
        position: absolute;
        inset: 0;
        background: rgba(9, 9, 11, 0.65);
        backdrop-filter: blur(6px);
        opacity: 0;
        transition: opacity 0.35s ease;
    }
    .mobile-nav-overlay.open .mob-backdrop {
        opacity: 1;
    }
    /* Panel slides in from right */
    .mob-panel {
        position: absolute;
        top: 0;
        right: 0;
        height: 100%;
        width: min(320px, 88vw);
        background: var(--surface);
        border-left: 1px solid var(--line);
        display: flex;
        flex-direction: column;
        padding: 0;
        transform: translateX(100%);
        transition: transform 0.42s cubic-bezier(0.77, 0, 0.175, 1);
        box-shadow: -20px 0 60px rgba(0, 0, 0, 0.4);
        overflow-y: auto;
    }
    .mobile-nav-overlay.open .mob-panel {
        transform: translateX(0);
    }
    /* Panel header row */
    .mob-panel-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1.2rem 1.5rem;
        border-bottom: 1px solid var(--line);
        flex-shrink: 0;
    }
    .mob-close {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--surface-2);
        border: 1px solid var(--line);
        color: var(--text);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: background 0.2s ease, border-color 0.2s ease;
        flex-shrink: 0;
    }
    .mob-close:hover {
        background: var(--primary);
        border-color: var(--primary);
        color: #fff;
    }
    /* Numbered nav links */
    .mob-nav-list {
        list-style: none;
        padding: 1.8rem 0 1rem;
        margin: 0;
        flex: 1;
    }
    .mob-nav-link {
        display: flex;
        align-items: center;
        gap: 1.2rem;
        padding: 0.95rem 1.8rem;
        text-decoration: none;
        color: var(--text-muted);
        font-family: "Outfit", sans-serif;
        font-size: 1.4rem;
        font-weight: 700;
        border-left: 3px solid transparent;
        transition: color 0.2s ease, border-color 0.2s ease, padding-left 0.2s ease;
        /* stagger-in animation on open */
        opacity: 0;
        transform: translateX(20px);
    }
    .mobile-nav-overlay.open .mob-nav-link {
        opacity: 1;
        transform: translateX(0);
    }
    .mobile-nav-overlay.open .mob-nav-list li:nth-child(1) .mob-nav-link {
        transition: color 0.2s, border-color 0.2s, padding 0.2s, opacity 0.38s 0.22s ease, transform 0.38s 0.22s ease;
    }
    .mobile-nav-overlay.open .mob-nav-list li:nth-child(2) .mob-nav-link {
        transition: color 0.2s, border-color 0.2s, padding 0.2s, opacity 0.38s 0.28s ease, transform 0.38s 0.28s ease;
    }
    .mobile-nav-overlay.open .mob-nav-list li:nth-child(3) .mob-nav-link {
        transition: color 0.2s, border-color 0.2s, padding 0.2s, opacity 0.38s 0.34s ease, transform 0.38s 0.34s ease;
    }
    .mobile-nav-overlay.open .mob-nav-list li:nth-child(4) .mob-nav-link {
        transition: color 0.2s, border-color 0.2s, padding 0.2s, opacity 0.38s 0.40s ease, transform 0.38s 0.40s ease;
    }
    .mobile-nav-overlay.open .mob-nav-list li:nth-child(5) .mob-nav-link {
        transition: color 0.2s, border-color 0.2s, padding 0.2s, opacity 0.38s 0.46s ease, transform 0.38s 0.46s ease;
    }
    .mobile-nav-overlay.open .mob-nav-list li:nth-child(6) .mob-nav-link {
        transition: color 0.2s, border-color 0.2s, padding 0.2s, opacity 0.38s 0.52s ease, transform 0.38s 0.52s ease;
    }
    .mob-nav-link:hover,
    .mob-nav-link.active {
        color: var(--text);
        border-left-color: var(--primary);
        padding-left: 2.2rem;
    }
    .mnl-num {
        font-size: 0.72rem;
        font-weight: 600;
        color: var(--primary);
        font-family: "IBM Plex Mono", monospace;
        letter-spacing: 0.05em;
        opacity: 0.8;
        min-width: 20px;
    }
    /* Panel footer */
    .mob-panel-foot {
        padding: 1.4rem 1.5rem 2rem;
        border-top: 1px solid var(--line);
        display: flex;
        flex-direction: column;
        gap: 1rem;
        flex-shrink: 0;
        opacity: 0;
        transform: translateY(12px);
    }
    .mobile-nav-overlay.open .mob-panel-foot {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.4s 0.56s ease, transform 0.4s 0.56s ease;
    }
    .mob-resume-btn {
        width: 100%;
        justify-content: center;
    }
    .mob-socials {
        display: flex;
        gap: 1rem;
        justify-content: center;
    }
    .mob-socials a {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        background: var(--surface-2);
        border: 1px solid var(--line);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-muted);
        transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    }
    .mob-socials a:hover {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }
    .mob-copy {
        margin: 0;
        text-align: center;
        font-size: 0.78rem;
        color: var(--text-muted);
    }
    .header-actions {
        justify-self: end;
    }
}

@media (max-width: 640px) {
    .cursor-dot,
    .cursor-ring {
        display: none;
    }
    .container {
        width: min(1140px, 94vw);
    }
    .skills-grid {
        grid-template-columns: 1fr;
    }
    .floating-chip {
        display: none;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    .btn {
        width: 100%;
    }
    .header-actions .btn-outline {
        display: none;
    }
    .footer-inner {
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        gap: 1.5rem;
    }
    .hero-copy h1 {
        font-size: 2.8rem;
    }
}