/* ============================================
   Responsive Media Queries
   Mobile-first approach
   ============================================ */

/* Tablet and below (1024px) */
@media (max-width: 1024px) {
    :root {
        --spacing-xl: 3rem;
        --spacing-2xl: 4rem;
    }

    .nav-menu {
        gap: var(--spacing-md);
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .about-visual {
        position: static;
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

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

/* Mobile (768px and below) */
@media (max-width: 768px) {
    :root {
        font-size: 15px;
    }

    section {
        padding: var(--spacing-xl) 0;
    }

    /* Navigation Mobile */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--glass-border);
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        transform: translateY(-100%);
        opacity: 0;
        transition: all var(--transition-base);
        pointer-events: none;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-link::after {
        display: none;
    }

    /* Hero Mobile */
    .hero-title {
        letter-spacing: -1px;
    }

    .hero-cta {
        flex-direction: column;
    }

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

    /* Projects Grid */
    .projects-grid {
        grid-template-columns: 1fr;
    }

    /* Skills */
    .skills-categories {
        grid-template-columns: 1fr;
    }

    /* Timeline */
    .timeline::before {
        left: 15px;
    }

    .timeline-item {
        margin-left: 50px;
    }

    .timeline-marker {
        left: -50px;
    }

    /* Services */
    .services-compact-grid {
        grid-template-columns: 1fr;
    }

    /* Contact */
    .contact-info-cards {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

/* Small Mobile (480px and below) */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .stat-item {
        min-width: 100%;
    }

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

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

    .project-card {
        padding: var(--spacing-md);
    }

    .btn-primary,
    .btn-secondary {
        padding: 0.9rem 1.5rem;
        font-size: 0.938rem;
    }
}

/* Landscape Mobile */
@media (max-height: 600px) and (orientation: landscape) {
    .hero-section {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }

    .hero-stats {
        display: none;
    }
}
/* ============================================
   RESPONSIVE ADICIONALES PARA TIMELINE
   Añadir al final de css/responsive.css
   ============================================ */

@media (max-width: 768px) {
    .timeline-achievements {
        margin-left: 0;
    }
    
    .timeline-achievements li {
        font-size: 0.875rem;
    }
    
    .project-links {
        flex-direction: column;
    }
    
    .project-link {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .timeline-item {
        padding: var(--spacing-md);
        margin-left: 40px;
    }
    
    .timeline-marker {
        left: -45px;
        width: 16px;
        height: 16px;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-tags {
        gap: 0.4rem;
    }
    
    .timeline-tags span {
        font-size: 0.75rem;
        padding: 0.25rem 0.6rem;
    }
}