/* =====================================================
   MOBILE MENU & RESPONSIVE IMPROVEMENTS
   Adicione este arquivo após style.css ou integre ao style.css
===================================================== */

/* =====================================================
   BURGER MENU BUTTON
===================================================== */
.burger-menu {
    display: none; /* Mostrado apenas em mobile */
    flex-direction: column;
    justify-content: space-around;
    width: 28px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: var(--z-mobile-menu);
    transition: transform var(--transition-base);
}

.burger-menu span {
    width: 100%;
    height: 3px;
    background-color: var(--color-text-body);
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}

/* Animação do burger quando ativo */
.burger-menu.is-active span:nth-child(1) {
    transform: translateY(10.5px) rotate(45deg);
}

.burger-menu.is-active span:nth-child(2) {
    opacity: 0;
}

.burger-menu.is-active span:nth-child(3) {
    transform: translateY(-10.5px) rotate(-45deg);
}

/* =====================================================
   MOBILE NAVIGATION
===================================================== */
@media (max-width: 768px) {
    .burger-menu {
        display: flex;
    }

    /* Header ajustado para mobile */
    .header {
        height: var(--header-height-mobile);
        position: relative; /* Garante que o burger menu fique ancorado nele */
    }

    .header-container {
        display: flex !important;
        align-items: center !important;
        width: 100% !important;
        position: relative;
    }

    .burger-menu {
        display: flex !important;
        position: absolute !important;
        right: 16px !important;
        top: 50% !important;
        transform: translateY(-50%) !important;
    }

    .header .logo img {
        height: var(--logo-height-header-mobile);
    }

    /* Menu mobile */
    .nav-menu {
        position: fixed;
        top: var(--header-height-mobile);
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-bg-body);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: var(--space-md);
        transform: translateX(100%);
        transition: transform var(--transition-smooth);
        overflow-y: auto;
        z-index: var(--z-mobile-menu);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    }

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

    /* Nav items em mobile */
    .nav-menu > li {
        border-bottom: 1px solid var(--color-bg-light);
    }

    .nav-link {
        display: block;
        padding: var(--space-sm) 0;
        font-size: 1.125rem;
    }

    /* Dropdown em mobile */
    .has-dropdown .dropdown-menu {
        position: static;
        box-shadow: none;
        background-color: var(--color-bg-light);
        margin-top: var(--space-xs);
        border-radius: var(--border-radius-sm);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-smooth);
    }

    .has-dropdown.is-open .dropdown-menu {
        max-height: 400px;
    }

    .dropdown-link {
        padding: var(--space-sm);
    }

    /* CTA button em mobile */
    .nav-cta {
        margin-left: 0;
        margin-top: var(--space-md);
    }

    .btn-orcamento {
        width: 100%;
        justify-content: center;
        height: 48px;
        font-size: 1rem;
    }

    /* Previne scroll do body quando menu aberto */
    body.menu-open {
        overflow: hidden;
    }
}

/* =====================================================
   CAROUSEL CONTROLS (Setas de navegação)
===================================================== */
.carousel-controls {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-top: var(--space-md);
}

.carousel-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.carousel-btn:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.carousel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.carousel-btn svg {
    width: 20px;
    height: 20px;
}

/* =====================================================
   HEADER SCROLL STATE
===================================================== */
.header.is-scrolled {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Opcional: Header que esconde ao scrollar para baixo */
.header.is-hidden {
    transform: translateY(-100%);
    transition: transform var(--transition-smooth);
}

/* =====================================================
   IMPROVED SOLUTIONS CAROUSEL
===================================================== */
.solutions-carousel {
    position: relative;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary-light) transparent;
}

.solutions-carousel::-webkit-scrollbar {
    height: 8px;
}

.solutions-carousel::-webkit-scrollbar-track {
    background: transparent;
}

.solutions-carousel::-webkit-scrollbar-thumb {
    background-color: var(--color-primary-light);
    border-radius: 4px;
}

.solutions-carousel::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-primary);
}

.solutions-track {
    display: flex;
    gap: var(--grid-gutter);
    padding-bottom: var(--space-sm);
}

/* =====================================================
   ACCESSIBILITY IMPROVEMENTS
===================================================== */

/* Focus visible para navegação por teclado */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

/* Remove outline default */
a:focus,
button:focus {
    outline: none;
}

/* Skip to main content link */
.skip-to-main {
    position: absolute;
    top: -100px;
    left: 0;
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
    z-index: 10000;
    border-radius: 0 0 var(--border-radius-sm) 0;
}

.skip-to-main:focus {
    top: 0;
}

/* =====================================================
   LOADING STATES
===================================================== */
.is-loading {
    pointer-events: none;
    opacity: 0.6;
    cursor: wait;
}

.spinner {
    border: 3px solid var(--color-bg-light);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* =====================================================
   UTILITY CLASSES
===================================================== */

/* Visibilidade */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Espaçamento */
.mt-0 { margin-top: 0 !important; }
.mt-sm { margin-top: var(--space-sm) !important; }
.mt-md { margin-top: var(--space-md) !important; }
.mt-lg { margin-top: var(--space-lg) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-sm { margin-bottom: var(--space-sm) !important; }
.mb-md { margin-bottom: var(--space-md) !important; }
.mb-lg { margin-bottom: var(--space-lg) !important; }

/* =====================================================
   RESPONSIVE TYPOGRAPHY
===================================================== */
@media (max-width: 768px) {
    h1 {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
        letter-spacing: -0.5px;
    }

    h2 {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }

    h3 {
        font-size: clamp(1.125rem, 4vw, 1.375rem);
    }

    p {
        font-size: 1rem;
        line-height: 1.7;
    }
}

/* =====================================================
   PRINT STYLES
===================================================== */
@media print {
    .header,
    .footer,
    .burger-menu,
    .btn,
    .carousel-controls,
    .hero-dots {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }

    a {
        text-decoration: underline;
        color: #000;
    }

    a[href^="http"]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }
}

/* =====================================================
   PERFORMANCE OPTIMIZATIONS
===================================================== */

/* Reduz motion para usuários com preferência */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* GPU acceleration para elementos animados */
.hero-slide,
.nav-menu,
.dropdown-menu,
.carousel-btn {
    will-change: transform;
}

/* Remove will-change após animação */
.hero-slide.is-active {
    will-change: auto;
}