/* ARQUIVO: assets/css/header.css */
/* Estilos para o cabeçalho */

.cabecalho {
    background-color: var(--cor-fundo);
    box-shadow: var(--sombra-pequena);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transicao-padrao);
}

.cabecalho .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cor-primaria);
}

.menu ul {
    display: flex;
    gap: 1.5rem;
}

.menu a {
    position: relative;
    color: var(--cor-texto);
    font-weight: 500;
    padding: 0.5rem 0;
    transition: var(--transicao-padrao);
}

.menu a:hover {
    color: var(--cor-primaria);
}

.menu li.active a {
    color: var(--cor-primaria);
}

.menu li.active a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--cor-primaria);
}

.toggle-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tema-toggle {
    position: relative;
    width: 48px;
    height: 24px;
    border-radius: 12px;
    background-color: var(--cor-fundo-secundaria);
    border: 1px solid var(--cor-borda);
    transition: var(--transicao-padrao);
    overflow: hidden;
}

.tema-toggle::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: var(--cor-primaria);
    transition: var(--transicao-padrao);
}

html[data-tema="escuro"] .tema-toggle::before {
    transform: translateX(24px);
}

.tema-toggle .icon-sol,
.tema-toggle .icon-lua {
    position: absolute;
    top: 0;
    width: 24px;
    height: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 12px;
    transition: var(--transicao-padrao);
}

.tema-toggle .icon-sol {
    left: 0;
    opacity: 1;
}

.tema-toggle .icon-lua {
    right: 0;
    opacity: 0.5;
}

html[data-tema="escuro"] .tema-toggle .icon-sol {
    opacity: 0.5;
}

html[data-tema="escuro"] .tema-toggle .icon-lua {
    opacity: 1;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--cor-texto);
    transition: var(--transicao-padrao);
}

.menu-toggle.ativo span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.menu-toggle.ativo span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.ativo span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Responsividade do cabeçalho */
@media (max-width: 768px) {
    .menu {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        height: 0;
        overflow: hidden;
        background-color: var(--cor-fundo);
        transition: height 0.3s ease;
        box-shadow: var(--sombra-pequena);
    }
    
    .menu.ativo {
        height: auto;
    }
    
    .menu ul {
        flex-direction: column;
        padding: 1rem;
        gap: 0;
    }
    
    .menu li {
        width: 100%;
    }
    
    .menu a {
        display: block;
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--cor-borda);
    }
    
    .menu-toggle {
        display: flex;
    }
}