.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height, 100px);
    background: var(--header-bg);
    backdrop-filter: var(--header-backdrop, blur(12px) saturate(180%));
    -webkit-backdrop-filter: var(--header-backdrop, blur(12px) saturate(180%));
    border-bottom: 1px solid var(--header-border);
    box-shadow: var(--shadow-md);
    z-index: var(--z-header);
    transform: translateZ(0);
    backface-visibility: hidden;
    will-change: background, backdrop-filter, box-shadow, transform;
    transition: 
        background var(--transition-base) var(--transition-ease-out),
        backdrop-filter var(--transition-base) var(--transition-ease-out),
        box-shadow var(--transition-base) var(--transition-ease-out),
        border-color var(--transition-base) var(--transition-ease-out),
        transform 0.7s ease-in-out;
    -webkit-tap-highlight-color: transparent;
}

/* Efeito de gradiente */
.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        180deg,
        var(--header-gradient) 0%,
        transparent 100%
    );
    pointer-events: none;
    z-index: -1;
    will-change: opacity;
}

/* Estado scrolled */
.header.scrolled {
    background: var(--header-bg-scrolled);
    backdrop-filter: blur(16px) saturate(200%);
    -webkit-backdrop-filter: blur(16px) saturate(200%);
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--header-border);
}

/* Efeito de gradiente */
.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        180deg,
        var(--header-gradient) 0%,
        transparent 100%
    );
    pointer-events: none;
    z-index: -1;
    will-change: opacity;
}

/* Estado scrolled */
.header.scrolled {
    background: var(--header-bg-scrolled);
    backdrop-filter: blur(16px) saturate(200%);
    -webkit-backdrop-filter: blur(16px) saturate(200%);
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--header-border);
    transform: translateZ(0) translateY(0);
}

/* Efeito para header escondido (scroll down) */
.header.hidden {
    transform: translateZ(0) translateY(-100%);
    transition: transform var(--transition-slow) var(--transition-ease-in-out);
}

/* Navbar */
.navbar {
    padding: 1rem 0;
    height: 100%;
    will-change: padding;
    transition: padding var(--transition-base) var(--transition-ease-out);
}

.header.scrolled .navbar {
    padding: 0.75rem 0;
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    height: 100%;
    will-change: gap;
}

/* Logo */
.navbar-brand {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.logo {
    display: inline-block;
    text-decoration: none;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

.logo-img {
    height: 60px;
    width: auto;
    display: block;
    transform: translateZ(0);    
    will-change: transform, filter;
    transition: transform var(--transition-base), filter var(--transition-base);
    filter: drop-shadow(0 0 8px rgba(0, 175, 255, 0.3));
}

/* Hover */
.logo:hover .logo-img {
    transform: scale(1.05);
    filter: drop-shadow(0 0 15px rgba(0, 175, 255, 0.5));
}

.logo:focus-visible {
    outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
    border-radius: var(--border-radius-sm);
}

/* Desktop Navigation */
.navbar-menu {
    display: none;
    flex: 1;
    justify-content: center;
    will-change: opacity, transform;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    will-change: gap;
}

.nav-item {
    position: relative;
    display: flex;
    align-items: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    border-radius: var(--border-radius-md);
    position: relative;
    transform: translateZ(0);
    will-change: transform, color;
    -webkit-tap-highlight-color: transparent;
    text-decoration: none;
}

.nav-link-text {
    position: relative;
    z-index: 1;
    will-change: background;
    transition: 
        background var(--transition-base) var(--transition-ease-out),
        -webkit-background-clip var(--transition-base),
        background-clip var(--transition-base);
}

/* Indicador de página ativa */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
    transition: transform 0.3s ease-out;
    transform-origin: center;
}

.nav-item.dropdown .nav-link::after {
    left: calc(50% - 10px);
}

/* Hover states */
.nav-link:hover {
    transform: translateY(-2px);
    color: var(--text-primary);
}

.nav-link:hover .nav-link-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Focus states para acessibilidade */
.nav-link:focus-visible {
    outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
    transform: translateY(-2px);
}

.nav-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Estado ativo com background estático */
.nav-link.active {
    color: var(--text-primary);
    transform: translateY(-2px);
}

.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-link.active .nav-link-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

/* Dropdown icon */
.dropdown-icon {
    font-size: 0.75rem;
    transition: transform var(--transition-base), color var(--transition-base);
}

.dropdown:hover .dropdown-icon {
    transform: rotate(180deg);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 50%;
    min-width: 500px;
    background: rgba(15, 20, 25, 0.85);
    backdrop-filter: blur(25px) saturate(180%);
    -webkit-backdrop-filter: blur(25px) saturate(180%);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--dropdown-border);
    padding: var(--spacing-sm);
    display: grid;
    grid-template-columns: repeat(2, auto);
    gap: var(--spacing-xs);
    grid-template-columns: 1fr 1fr;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-10px);
    transition: 
        opacity 0.3s ease-out 0.1s,
        visibility 0.3s ease-out 0.1s,
        transform 0.3s ease-out 0.1s;
    transform-origin: top center;
    will-change: opacity, transform, visibility;
    z-index: var(--z-dropdown);
    overflow: hidden;
    isolation: isolate;
}

.dropdown:not(:hover) .dropdown-menu {
    transition: 
        opacity 0.2s ease-in,
        visibility 0.2s ease-in,
        transform 0.2s ease-in;
}

/* Estados visíveis */
.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Blur circular de fundo */
.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -30%;
    width: 200px;
    height: 200px;
    background: radial-gradient(
        circle at center,
        var(--accent-color),
        var(--primary-color)
    );
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.4;
    z-index: -1;
    will-change: transform;
    transform: translateZ(0);
    animation: floatBlur 8s ease-in-out infinite;
}

.dropdown-menu::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -20%;
    width: 150px;
    height: 150px;
    background: radial-gradient(
        circle at center,
        var(--primary-light),
        var(--accent-color)
    );
    border-radius: 50%;
    filter: blur(50px);
    opacity: 0.3;
    z-index: -1;
    will-change: transform;
    transform: translateZ(0);
    animation: floatBlur 8s ease-in-out infinite reverse;
}

/* Animação */
@keyframes floatBlur {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(10px, -10px) scale(1.05);
    }
    50% {
        transform: translate(-5px, 5px) scale(0.95);
    }
    75% {
        transform: translate(-10px, -5px) scale(1.02);
    }
}

/* Dropdown items container */
.dropdown-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

/* Dropdown item individual */
.dropdown-item {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1rem 1.25rem;    
    border-radius: var(--border-radius-lg);    
    position: relative;
    overflow: hidden;
    text-decoration: none;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    /* Animação de entrada */
    opacity: 0;
    transform: translateY(10px);
    will-change: opacity, transform;
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

.dropdown:hover .dropdown-item,
.dropdown:focus-within .dropdown-item {
    opacity: 1;
    transform: translateY(0);
}

/* Efeito de cascata (stagger) */
.dropdown:hover .dropdown-item:nth-child(1), .dropdown:focus-within .dropdown-item:nth-child(1) { transition-delay: 0.05s; }
.dropdown:hover .dropdown-item:nth-child(2), .dropdown:focus-within .dropdown-item:nth-child(2) { transition-delay: 0.1s; }
.dropdown:hover .dropdown-item:nth-child(3), .dropdown:focus-within .dropdown-item:nth-child(3) { transition-delay: 0.15s; }
.dropdown:hover .dropdown-item:nth-child(4), .dropdown:focus-within .dropdown-item:nth-child(4) { transition-delay: 0.2s; }
.dropdown:hover .dropdown-item:nth-child(5), .dropdown:focus-within .dropdown-item:nth-child(5) { transition-delay: 0.25s; }
.dropdown:hover .dropdown-item:nth-child(6), .dropdown:focus-within .dropdown-item:nth-child(6) { transition-delay: 0.3s; }

/* Background hover effect */
.dropdown-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(39, 159, 245, 0.05), rgba(0, 217, 255, 0.05));
    opacity: 0;
    will-change: opacity;
    transition: opacity var(--transition-fast) var(--transition-ease-out);
    z-index: -1;
}

/* Hover states */
.dropdown-item:hover,
.dropdown-item:focus {
    background: rgba(39, 159, 245, 0.05);
    transform: translateX(4px);
    outline: none;
}

.dropdown-item:hover::before,
.dropdown-item:focus::before {
    opacity: 1;
}

/* Focus visível para acessibilidade */
.dropdown-item:focus-visible {
    outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
    background: rgba(39, 159, 245, 0.1);
}

.dropdown-item i {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(39, 159, 245, 0.25);
    will-change: transform, box-shadow;
    transform: translateZ(0);
    transition: all var(--transition-fast);
}

.dropdown-item:hover i,
.dropdown-item:focus i {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 20px rgba(39, 159, 245, 0.35);
}

/* Conteúdo do dropdown item */
.dropdown-item-content {
    flex: 1;
    min-width: 0;
}

.dropdown-title {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    will-change: color, background;
    white-space: nowrap;
    transition: color var(--transition-fast);
}

/* Hover effects para texto */
.dropdown-item:hover .dropdown-title,
.dropdown-item:focus .dropdown-title {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Botão CTA & Ações */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    will-change: gap;
}

/* Botão base */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--border-radius-lg);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transform: translateZ(0);
    will-change: transform, box-shadow, background-color;
    -webkit-tap-highlight-color: transparent;
    outline: none;
    user-select: none;
    -webkit-user-select: none;
    transition: all var(--transition-base);
}

/* Estados de foco para acessibilidade */
.btn:focus-visible {
    outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
}

.btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Estados interativos */
.btn:hover {
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
    transform: none;
}

/* Ícones em botões */
.btn i,
.btn svg {
    font-size: 0.875rem;
    width: 1em;
    height: 1em;
    will-change: transform;
    transition: transform var(--transition-base) var(--transition-ease-out);
}

.btn:hover i,
.btn:hover svg {
    transform: translateX(3px);
}

/* Botão de contato */
.btn-contact {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-width: 9em;
    height: 3em;
    padding: 0 1.7em;
    border-radius: 30em;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    z-index: 1;
    color: var(--text-primary);
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transform: translateZ(0);
    will-change: transform, box-shadow, color;
    transition: color 0.5s ease, transform var(--transition-base), 
                background-color var(--transition-base), 
                box-shadow var(--transition-base);
    -webkit-tap-highlight-color: transparent;
    outline: none;
    white-space: nowrap;
}

/* Animação de gradiente de fundo */
.btn-contact::before {
    content: '';
    width: 0;
    height: 100%;
    border-radius: 30em;
    position: absolute;
    top: 0;
    left: 0;
    background-image: linear-gradient(
        to right, 
        var(--primary-color) 0%, 
        var(--accent-color) 100%
    );
    will-change: width;
    transition: width 0.5s ease;
    display: block;
    z-index: -1;
}

/* Hover states */
.btn-contact:hover::before {
    width: 100%;
}

.btn-contact:hover {
    color: var(--text-on-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

/* Estados ativos */
.btn-contact:active {
    transform: translateY(0);
    box-shadow: inset 2px 2px 5px rgba(197, 197, 197, 0.3),
                inset -2px -2px 5px rgba(255, 255, 255, 0.8);
    transition: none;
}

/* Focus states para acessibilidade */
.btn-contact:focus-visible {
    outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
}

.btn-contact:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Ícone específico do botão de contato */
.btn-contact i,
.btn-contact svg {
    font-size: 0.875rem;
    will-change: transform;
    transition: transform var(--transition-base);
}

.btn-contact:hover i,
.btn-contact:hover svg {
    transform: translateX(3px);
}

/* Botão primário */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--text-on-primary);
    box-shadow: 0 4px 15px rgba(39, 159, 245, 0.3);
    will-change: transform, box-shadow;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(39, 159, 245, 0.4);
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-light));
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(39, 159, 245, 0.2);
}

.btn-primary:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Botão com efeito glow */
.btn-glow {
    position: relative;
    overflow: hidden;
}

.btn-glow::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg, transparent, 
        rgba(255, 255, 255, 0.3), 
        transparent
    );
    will-change: left;
    transition: left 0.6s ease;
    z-index: 1;
}

.btn-glow:hover::before {
    left: 100%;
}

.btn i {
    font-size: 0.875rem;
    transition: transform var(--transition-base);
}

/* Botão em bloco */
.btn-block {
    display: flex;
    width: 100%;
    justify-content: center;
}

/* Design Responsivo */

/* Ocultar botão em telas pequenas */
@media (max-width: 767px) {
    .navbar-actions .btn,
    .navbar-actions .btn-contact {
        display: none;
    }
}

/* Telas muito pequenas */
@media (max-width: 480px) {
    .btn-contact {
        min-width: auto;
        padding: 0 1.2em;
        font-size: 0.875rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.875rem;
    }
}

/* Telas médias */
@media (min-width: 768px) and (max-width: 1023px) {
    .btn-contact {
        min-width: 8em;
        padding: 0 1.5em;
    }
}

/* Telas grandes */
@media (min-width: 1200px) {
    .btn-contact {
        min-width: 10em;
        padding: 0 2em;
        font-size: 1rem;
    }
    
    .btn {
        padding: 0.875rem 1.75rem;
        font-size: 1rem;
    }
}

/* Seletor de Idiomas */
.language-selector-wrapper {
    position: relative;
    display: inline-block;
    will-change: transform;
}

/* Botão de alternância de idioma */
.language-toggle {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.65rem;
    background: var(--language-toggle-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--header-border);
    border-radius: 10px;
    font-size: 0.95rem;
    cursor: pointer;
    position: relative;
    transform: translateZ(0);
    will-change: transform, box-shadow, background;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    min-width: 60px;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

/* Hover states */
.language-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--bg-primary);
}

.language-toggle:active {
    transform: translateY(0);
}

/* Focus states para acessibilidade */
.language-toggle:focus-visible {
    outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
}

.language-toggle:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Bandeira/ícone do idioma */
.language-flag {
    font-size: 1.4rem;
    line-height: 1;
    display: inline-block;
    will-change: transform, filter;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
    transition: transform var(--transition-fast);
}

.language-toggle:hover .language-flag {
    transform: scale(1.1);
    filter: drop-shadow(0 2px 4px rgba(39, 159, 245, 0.2));
}

/* Texto do idioma */
.language-text {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
    will-change: color, background;
    transition: all var(--transition-base);
}

.language-toggle:hover .language-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Ícone de seta suspensa */
.language-toggle i {
    font-size: 0.6rem;
    color: var(--text-light);
    will-change: transform, background;
    transition: transform var(--transition-base), color var(--transition-base);
}

.language-toggle:hover i {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Estado ativo/expandido */
.language-toggle[aria-expanded="true"] i,
.language-toggle.active i {
    transform: rotate(180deg);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Dropdown de idiomas */
.language-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    min-width: 160px;
    width: max-content;
    max-width: 200px;
    background: var(--dropdown-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--dropdown-border);
    padding: 18px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
    overflow: hidden;
    isolation: isolate;
}

/* Estados visíveis */
.language-dropdown[aria-hidden="false"],
.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Blur circular de fundo para o dropdown */
.language-dropdown::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 120px;
    height: 120px;
    background: radial-gradient(
        circle at center,
        var(--accent-color),
        var(--primary-color)
    );
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.3;
    z-index: -1;
    will-change: transform;
    transform: translateZ(0);
}

.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Opções de idioma */
.language-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.625rem 0.75rem;
    margin: 0.15rem 0;
    background: transparent;
    border: none;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-align: left;
    will-change: transform, background, color;
    transform: translateZ(0);
    transition: all var(--transition-fast);
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

/* Efeito de foco de fundo */
.language-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(39, 159, 245, 0.05), rgba(0, 217, 255, 0.05));
    opacity: 0;
    will-change: opacity;
    transition: opacity var(--transition-fast);
    z-index: -1;
}

/* Hover states */
.language-option:hover,
.language-option:focus {
    background: var(--bg-tertiary);
    transform: translateX(4px);
    color: var(--primary-color);
    outline: none;
}

.language-option:hover::before,
.language-option:focus::before {
    opacity: 1;
}

/* Focus visível para acessibilidade */
.language-option:focus-visible {
    outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
    background: var(--bg-secondary);
}

/* Estado ativo/selecionado */
.language-option[aria-selected="true"],
.language-option.active {
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    color: var(--primary-color);
    font-weight: 600;
}

.language-option[aria-selected="true"] .flag,
.language-option.active .flag {
    filter: drop-shadow(0 2px 4px rgba(39, 159, 245, 0.3));
    transform: scale(1.05);
}

/* Efeito de foco de texto */
.language-option:hover span:not(.flag),
.language-option:focus span:not(.flag) {
    will-change: color, background;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Recipiente de bandeira */
.language-option .flag {
    font-size: 1.4rem;
    display: inline-block;
    will-change: transform, filter;
    transition: 
        all var(--transition-fast) var(--transition-ease-out),
        transform var(--transition-fast) var(--transition-ease-out);
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

/* Efeitos de foco para bandeiras */
.language-option:hover .flag,
.language-option:focus .flag {
    filter: drop-shadow(0 2px 4px rgba(39, 159, 245, 0.25));
    animation: bounce 0.3s ease;
}

/* Animação de salto */
@keyframes bounce {
    0%, 100% { 
        transform: translateY(0); 
    }
    50% { 
        transform: translateY(-2px); 
    }
}

/* Bandeiras SVG */
.flag-svg {
    width: 20px;
    height: 14px;
    border-radius: var(--border-radius-sm);
    display: inline-block;
    vertical-align: middle;
    will-change: transform, filter;
    transition: all var(--transition-fast);
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
    object-fit: cover;
}

/* Tamanho da bandeira no botão de alternância */
.language-flag .flag-svg {
    width: 18px;
    height: 12px;
}

/* Efeitos de foco para bandeiras SVG */
.language-option:hover .flag-svg,
.language-option:focus .flag-svg,
.language-toggle:hover .flag-svg {
    filter: drop-shadow(0 2px 4px rgba(39, 159, 245, 0.25));
    transform: scale(1.1);
}

/* Estado ativo para sinalizadores SVG */
.language-option[aria-selected="true"] .flag-svg,
.language-option.active .flag-svg {
    filter: drop-shadow(0 2px 4px rgba(39, 159, 245, 0.3));
    transform: scale(1.05);
}

/* Design Responsivo */

/* Telas muito pequenas */
@media (max-width: 480px) {
    .language-dropdown {
        min-width: 140px;
        max-width: 180px;
    }
    
    .language-option {
        padding: 0.5rem 0.6rem;
        font-size: 0.85rem;
    }
}

/* Telas médias */
@media (min-width: 768px) and (max-width: 1023px) {
    .language-dropdown {
        min-width: 150px;
    }
}

/* Telas grandes */
@media (min-width: 1200px) {
    .language-dropdown {
        min-width: 170px;
        max-width: 220px;
    }
    
    .language-option {
        padding: 0.7rem 0.8rem;
        font-size: 0.95rem;
    }
}