/* ============================================================
   responsive.css — Media queries, mobile nav
   ============================================================ */

/* ---------- Tablet & below ---------- */
@media (max-width: 900px) {
    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-lg);
    }

    .profile-picture {
        max-width: 240px;
        margin: 0 auto;
    }

    .about-text p {
        font-size: 1.6rem;
    }

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

/* ---------- Mobile nav ---------- */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-bg-elevated);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: var(--space-sm) var(--space-md) var(--space-md);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: transform var(--transition-base), opacity var(--transition-base);
        box-shadow: var(--shadow-md);
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links a {
        display: block;
        padding: 14px 8px;
        font-size: 1.6rem;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .nav-links a::after {
        display: none;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .section {
        padding: var(--space-xl) var(--space-sm);
    }

    .hero-content {
        padding: var(--space-md);
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-cta .btn {
        justify-content: center;
    }

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

/* ---------- Small mobile ---------- */
@media (max-width: 480px) {
    html {
        font-size: 55%;
    }

    .hero h1 {
        font-size: 3.2rem;
    }

    .hero-typed {
        font-size: 1.7rem;
    }

    .timeline {
        padding-left: 24px;
    }

    .timeline-item::before {
        left: -24px;
        width: 14px;
        height: 14px;
    }

    .project-body {
        padding: var(--space-md);
    }
}