:root {
	--cor-primaria: #1a1a1a;
	--cor-texto: #333;
	--cor-fundo: #f4f7f6;
	--cor-link: #0056b3;
}

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

body {
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	color: var(--cor-texto);
	background-color: var(--cor-fundo);
	line-height: 1.6;
	font-size: 16px;
}

/* Container com recuo seguro para leitura em telas menores */
.container {
	width: 100%;
	max-width: 1100px;
	margin: 0 auto;
	padding: 0 20px;
}

/* Cabeçalho */
.cabecalho {
	background-color: var(--cor-primaria);
	color: #fff;
	padding: 25px 0;
	margin-bottom: 25px;
	text-align: center; /* Centralizado por padrão no mobile */
}

.logo-blog {
	font-size: 1.6rem;
	font-weight: 700;
	letter-spacing: -0.5px;
}

/* ==============================================
   GRID FLUIDO (Celular - 1 coluna)
   ============================================== */
.grid-posts {
	display: grid;
	grid-template-columns: 1fr;
	gap: 20px;
	margin-bottom: 40px;
}

/* Cards de Postagem */
.card-post {
	background: #fff;
	border-radius: 8px;
	overflow: hidden;
	box-shadow: 0 2px 8px rgba(0,0,0,0.06);
	display: flex;
	flex-direction: column;
}

.card-post img {
	width: 100%;
	height: auto;
	object-fit: cover;
	aspect-ratio: 16/9; /* Proporção ideal sem distorcer a imagem */
	display: block;
}

.card-conteudo {
	padding: 20px;
	display: flex;
	flex-direction: column;
	flex-grow: 1;
}

.card-conteudo h2 {
	margin-bottom: 8px;
	line-height: 1.3;
}

.card-conteudo h2 a {
	color: var(--cor-primaria);
	text-decoration: none;
	font-size: 1.25rem;
	font-weight: 700;
}

.card-conteudo h2 a:hover {
	color: var(--cor-link);
}

.data {
	font-size: 0.8rem;
	color: #777;
	margin-bottom: 12px;
}

.descricao-curta {
	font-size: 0.95rem;
	color: #555;
}

/* ==============================================
   TABLETS (Telas acima de 650px)
   ============================================== */
@media (min-width: 650px) {
	.cabecalho {
		text-align: left;
	}
	.logo-blog {
		font-size: 1.8rem;
	}
	.grid-posts {
		grid-template-columns: repeat(2, 1fr); /* 2 colunas */
		gap: 25px;
	}
}

/* ==============================================
   DESKTOPS (Telas acima de 950px)
   ============================================== */
@media (min-width: 950px) {
	.grid-posts {
		grid-template-columns: repeat(3, 1fr); /* 3 colunas */
	}
	.card-post {
		transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s ease;
	}
	.card-post:hover {
		transform: translateY(-4px);
		box-shadow: 0 4px 15px rgba(0,0,0,0.12);
	}
}