* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: #f4f4f4; 
    color: var(--text-color);
    padding-top: 80px; /* Ajuste conforme a altura do seu header */
}

/* ******************* HEADER ******************* */
header {
    /* border: 3px solid red; */
    background-color: var(--primary-color);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform: translateY(0);
    opacity: 1;
    height: 80px; /* Altura fixa para melhor controle */
}

/* Classe para esconder o header */
header.header-hidden {
    transform: translateY(-100%);
    opacity: 0;
}

/* Classe para mostrar o header */
header.header-visible {
    transform: translateY(0);
    opacity: 1;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    padding: 0 20px;
    position: relative;
    height: 100%;
}

.header-container img {
    width: 80px;
    height: auto;
    padding: 10px 0;
    transition: transform 0.3s ease;
}

.header-container img:hover {
    transform: scale(1.05);
}

.menu {
    /* border: 3px solid green; */
    margin: 20px 0;
}

.menu ul {
    /* border: 3px solid blue; */
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2px;
}

.menu ul li {
    /* border: 3px solid yellow; */
    display: flex;
    justify-content: center;
    align-items: center;
}

.menu ul li a {
    /* border: 3px solid cadetblue; */
    color: black;
    text-decoration: none;
    font-size: var(--font-size-3);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
}

.menu ul li a:hover {
    color: var(--hover-color);
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.menu ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.menu ul li a:hover::after {
    width: 80%;
}

.material-symbols-outlined {
    font-variation-settings:
    'FILL' 0,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24
}

#hamburger-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 2rem;
    color: black;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.3s ease;
    /* Remover bordas e outlines padrão */
    outline: none;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

#hamburger-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

#hamburger-btn:active {
    background-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

/* ******************* BOTÃO VOLTAR AO TOPO ******************* */
.scroll-to-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.scroll-to-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.2);
}

.scroll-to-top-btn:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

.scroll-to-top-btn:active {
    transform: translateY(0);
}

/* Tablet - Breakpoint médio */
@media (max-width: 1024px) {
    .header-container {
        padding: 0 15px;
    }
    
    /* .menu ul {
        gap: 20px;
    } */
    
    .menu ul li a {
        font-size: 15px;
        padding: 6px 10px;
    }
    
    .scroll-to-top-btn {
        bottom: 25px;
        right: 25px;
        width: 45px;
        height: 45px;
        font-size: 22px;
    }
}

/* Mobile - Breakpoint pequeno */
@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }
    
    header {
        height: 70px;
    }
    
    .header-container {
        padding: 0 15px;
    }
    
    .header-container img {
        width: 70px;
    }
    
    .menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--primary-color);
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        border-radius: 0 0 12px 12px;
        z-index: 1000;
        opacity: 0;
        transform: translateY(-10px);
        transition: all 0.3s ease;
    }
    
    .menu.open {
        display: block;
        opacity: 1;
        transform: translateY(0);
    }
    
    #hamburger-btn {
        display: block;
        text-align: end;
        margin-right: 10px;
        /* Garantir que não tenha bordas ou outlines em mobile */
        border: none;
        outline: none;
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    .menu ul {
        flex-direction: column;
        align-items: stretch;
        padding: 20px 0;
        gap: 0;
    }
    
    .menu ul li {
        margin: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .menu ul li:last-child {
        border-bottom: none;
    }
    
    .menu ul li a {
        display: block;
        padding: 15px 20px;
        font-size: var(--font-size-3);
        text-align: center;
        transition: all 0.3s ease;
        /* Remover highlight azul ao tocar */
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    .menu ul li a:hover {
        background-color: rgba(255, 255, 255, 0.1);
        transform: none;
    }
    
    .menu ul li a:active {
        background-color: rgba(255, 255, 255, 0.2);
        transform: none;
    }
    
    .menu ul li a::after {
        display: none;
    }
    
}

/* Mobile pequeno */
@media (max-width: 480px) {
    body {
        padding-top: 60px;
    }
    
    header {
        height: 60px;
    }
    
    .header-container {
        padding: 0 10px;
    }
    
    .header-container img {
        width: 60px;
    }
    
    #hamburger-btn {
        font-size: 1.8rem;
        padding: 6px;
        /* Garantir que não tenha bordas ou outlines em mobile pequeno */
        border: none;
        outline: none;
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    .menu ul li a {
        padding: 12px 15px;
        font-size: 15px;
        /* Remover highlight azul ao tocar */
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    .scroll-to-top-btn {
        bottom: 15px;
        right: 15px;
        width: 45px;
        height: 45px;
        font-size: 22px;
    }
}

/* Desktop - Garantir que o menu sempre apareça */
@media (min-width: 769px) {
    #hamburger-btn {
        display: none !important;
    }
    
    .menu {
        display: block !important;
        position: static;
        background: none;
        box-shadow: none;
        border-radius: 0;
        opacity: 1;
        transform: none;
    }
    
    .menu ul {
        flex-direction: row;
        align-items: center;
    }
}

/* Acessibilidade - Foco visível */
.menu ul li a:focus,
#hamburger-btn:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* Animação de entrada do menu mobile */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.menu.open {
    animation: slideDown 0.3s ease forwards;
}

/* Animação do header auto-hide */
@keyframes slideInFromTop {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideOutToTop {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(-100%);
        opacity: 0;
    }
}

/* Aplicar animações baseadas nas classes */
header.header-slide-in {
    animation: slideInFromTop 0.3s ease forwards;
}

header.header-slide-out {
    animation: slideOutToTop 0.3s ease forwards;
}

/* Melhorar performance das animações */
header {
    will-change: transform, opacity;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

/* Garantir que o header sempre apareça no topo da página */
header:not(.header-hidden) {
    transform: translateY(0) !important;
    opacity: 1 !important;
}

/* Animação do botão voltar ao topo */
@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.8);
    }
    50% {
        transform: translateY(-5px) scale(1.1);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.scroll-to-top-btn.visible {
    animation: bounceIn 0.3s ease forwards;
}