/* ============================================================
   RESPONSIVE.CSS — Adaptaciones para tablet y mobile
   ============================================================ */

/* --- Tablet (<= 960px) --- */
@media screen and (max-width: 960px) {
    :root {
        --section-padding: 80px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .contact-wrap {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .project-card.featured {
        flex-direction: column;
    }

    .project-card.featured .project-media {
        border-right: none;
        border-bottom: 1px solid var(--border);
        aspect-ratio: 16 / 9;
    }
}

/* --- Mobile (<= 768px) --- */
@media screen and (max-width: 768px) {
    .section {
        padding: var(--section-padding-mobile) 20px;
    }

    /* Navbar: colapsa a menu hamburguesa */
    .nav-links {
        position: fixed;
        top: 64px;
        right: 0;
        width: 220px;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        background: var(--bg-secondary);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 16px;
        transform: translateX(120%);
        transition: transform 0.35s ease;
    }

    .nav-links.open {
        transform: translateX(0);
    }

    .nav-links a {
        padding: 10px 8px;
        width: 100%;
    }

    .nav-cta {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero-title {
        font-size: 2.2rem;
    }

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

    .objectives-card {
        grid-template-columns: 1fr;
        padding: 28px 20px;
    }

    .stack-track-wrap {
        padding-bottom: 260px;
    }

    .stack-detail-card {
        bottom: 150px;
    }

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