/* Definição de variáveis do tema (padrão - Claro) */
:root {
	--background-color: #fafafa;
	--background-color-2: #fff;
	--text-color: #333;
	--text-color-2: #777;
	--border-color: #ddd;
	--shadow-color: rgba(0, 0, 0, 0.1);
	--primary-color: #3498db;
	--secondary-color: #2ecc71;
}

/* Tema Escuro manual via atributo data-theme="dark" */
[data-theme="dark"] {
	--background-color: #222;
	--background-color-2: #181818;
	--text-color: #fff;
	--text-color-2: #f4f4f4;
	--border-color: #444;
	--shadow-color: rgba(121, 121, 121, 0.1);
}

/* Corpo da página */
body {
	background: var(--background-color);
	color: var(--text-color);
	font-family: Arial, sans-serif;
	transition: background 0.2s ease, color 0.2s ease;
}

a {
	color: var(--text-color);
}

img {
    max-width: 100%;
    height: auto;
}

article {
    line-height: 1.6;
    font-size: 1.1em;
    padding: 1em 0;
    margin: 1.2em auto;
}

article img {
    margin-bottom: 1em;
}

/*
	Classes de cores
*/

.color {
	color: var(--primary-color);
}

.bg-color {
	background-color: var(--primary-color);
	color: #fff;
}

.btn-color {
	padding: 0.6em 1.2em;
	background-color: var(--primary-color);
	color: #fff;
	border: none;
	border-radius: .3em;
	cursor: pointer;
	transition: background 0.2s ease, transform 0.2s ease;
}

.btn-color:hover {
	filter: brightness(0.9);
}

/*
	Componentes
*/

.box {
	width: 100%;
	padding: 1.6em 2.1em;
	background: var(--background-color-2);
	color: var(--text-color-2);
	border: 1px solid var(--border-color);
	border-radius: .3em;
	box-shadow: -.1em .1em .4em var(--shadow-color);
}

.table,
.table * {
	background: var(--background-color);
	color: var(--text-color);
}

/*
	Cabeçalho
*/

header {
	width: 100%;
}

header .logo {
	height: 3em;
	margin: 0;
}

header .navbar {
	background: var(--background-color-2);
	color: var(--text-color-2);
}

header .navbar .nav-item,
header .navbar .nav-item .nav-link,
header .navbar .nav-item .nav-link.active,
header a {
	color: var(--text-color-2);
}

header .navbar .nav-item .nav-link.active,
header a:hover {
	color: var(--text-color);
}

header .navbar .nav-item:hover .nav-link {
	filter: brightness(0.9);
}

header .navbar .dropdown-menu,
header .navbar .dropdown-menu .dropdown-item {
	background: var(--background-color-2);
	color: var(--text-color-2);
}

header .navbar .dropdown-menu .dropdown-item:hover {
	filter: brightness(0.9);
}

/*
	Seções
*/

main,
section {
	width: 100%;
	padding: 3em 0;
}

/*
	Rodapé
*/

footer {
	width: 100%;
	padding: 2em 0;
	background: var(--background-color-2);
	color: var(--text-color);
	border-top: 1px solid var(--border-color);
	text-align: center;
}