/* Estilos base do header */
header {
    transition: all 0.3s ease;
}

/* Logo responsivo */
.header-logo {
    width: 120px;
    height: auto;
}

@media (min-width: 640px) {
    .header-logo {
        width: 160px;
    }
}

/* Menu mobile */
.mobile-menu-button {
    display: none;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.mobile-menu.open {
    display: block;
}

/* Navegação desktop */
.desktop-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Botões responsivos */
.nav-button {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

@media (max-width: 767px) {
    .mobile-menu-button {
        display: block;
    }
    
    .desktop-nav {
        display: none;
    }
    
    .header-logo {
        width: 100px;
    }
    
    .nav-button {
        display: block;
        width: 100%;
        text-align: center;
        padding: 0.75rem 1rem;
        margin: 0.25rem 0;
    }
}