/* ============================================
   RESPONSIVE STYLES
   ============================================ */

/* ========== TABLET (max-width: 1024px) ========== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .sobre-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .sobre-image {
        order: -1;
    }
    
    .image-frame {
        width: 280px;
        height: 350px;
    }
    
    .image-decoration {
        width: 280px;
        height: 350px;
        left: calc(50% - 120px);
    }
    
    .servicos-grid {
        grid-template-columns: 1fr;
    }
    
    .projetos-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .contato-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-signature {
        text-align: center;
    }
    
    .footer-signature p {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        align-items: center;
        gap: var(--space-sm);
    }
}

/* ========== MOBILE (max-width: 768px) ========== */
@media (max-width: 768px) {
    :root {
        --space-4xl: 4rem;
    }
    
    /* Navigation */
    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border-subtle);
        padding: var(--space-lg);
        transform: translateY(-120%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .nav-link {
        display: block;
        padding: var(--space-md);
        text-align: center;
        font-size: 1rem;
    }
    
    .btn-nav {
        width: 100%;
    }
    
    /* ========================================
       NAV TOGGLE - HAMBURGER MENU
       Usa CSS custom properties para cálculo dinâmico
       ======================================== */
    .nav-toggle {
        --bar-width: 24px;
        --bar-height: 2px;
        --bar-gap: 5px;
        /* Cálculo automático do offset para animação */
        --bar-offset: calc(var(--bar-gap) + var(--bar-height));
        
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: var(--bar-gap);
        padding: var(--space-sm);
        width: 44px;
        height: 44px;
        cursor: pointer;
    }
    
    .nav-toggle span {
        display: block;
        width: var(--bar-width);
        height: var(--bar-height);
        background: var(--text-primary);
        border-radius: var(--bar-height);
        transition: all var(--transition-base);
        transform-origin: center;
    }
    
    /* Estado ativo - transforma em X */
    .nav-toggle.active span:nth-child(1) {
        transform: translateY(var(--bar-offset)) rotate(45deg);
    }
    
    .nav-toggle.active span:nth-child(2) {
        transform: scaleX(0);
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: translateY(calc(var(--bar-offset) * -1)) rotate(-45deg);
    }
    
    /* Hero */
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
        align-items: center;
    }
    
    .stat {
        text-align: center;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    /* Projetos */
    .projetos-grid {
        grid-template-columns: 1fr;
    }
    
    /* Sobre highlights */
    .sobre-highlights {
        gap: var(--space-md);
    }
    
    .highlight {
        flex-direction: column;
        text-align: center;
    }
    
    /* Code Window */
    .window-code {
        font-size: 0.75rem;
        padding: var(--space-md);
    }
    
    /* Buttons */
    .btn {
        padding: 0.75rem 1.5rem;
    }
    
    .btn-large {
        padding: 0.875rem 1.75rem;
    }
}

/* ========== SMALL MOBILE (max-width: 480px) ========== */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .image-frame {
        width: 240px;
        height: 300px;
    }
    
    .image-decoration {
        width: 240px;
        height: 300px;
        left: calc(50% - 100px);
    }
    
    .servico-card {
        padding: var(--space-lg);
    }
    
    .projeto-content {
        padding: var(--space-md);
    }
    
    .contato-item {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-card {
        padding: var(--space-lg);
    }
}