html {
    font-size: 14px;
    position: relative;
    min-height: 100%;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

/* Reset básico */
body {
    font-family: 'Open Sans', sans-serif;
    background-color: #f4f4f9;
    margin-bottom: 60px;
}

/* Navbar modernizada */
.navbar {
    background-color: #343a40;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.navbar .navbar-brand img {
    height: 40px;
}

/* Itens do menu */
.navbar-nav .nav-link {
    color: #ddd;
    transition: color 0.3s, background-color 0.3s;
    padding: 10px 15px;
    border-radius: 4px;
}

.navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
    color: #fff;
    background-color: #495057; /* tom mais claro para destaque */
}

/* Dropdown estilos */
.dropdown-menu {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.dropdown-item {
    transition: background-color 0.2s;
}

.dropdown-item:hover {
    background-color: #f1f1f1;
}

/* Botőes DataTables - melhorar visual */
.dt-button {
    background-color: #6c757d;
    border: none;
    border-radius: 4px;
    padding: 5px 10px;
    color: #fff;
    transition: background-color 0.3s;
}

.dt-button:hover {
    background-color: #495057;
}