/* Filtros Minimalistas */
.filtros {
    display: flex;
    gap: 15px;
    margin: 3rem 0 2rem 0;
    justify-content: center;
}

.btn-filtro {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    padding-bottom: 5px;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.btn-filtro:hover, .btn-filtro.ativo {
    color: var(--text-color);
    border-bottom-color: var(--text-color);
}

/* Grid de Posts */
.feed-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px 4rem 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2.5rem;
}

.card-post {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
}

.card-post:hover {
    transform: translateY(-4px);
    border-color: var(--text-color);
}

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    filter: grayscale(100%); /* Charme P&B */
    transition: filter 0.3s;
}

.card-post:hover .card-img {
    filter: grayscale(0%); /* Cor ao passar o mouse */
}

.card-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-meta {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.card-title {
    font-size: 1.4rem;
    margin: 0 0 0.8rem 0;
    color: var(--text-color);
    line-height: 1.3;
}

.card-resumo {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex: 1;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.btn-ler {
    color: var(--text-color);
    font-weight: 600;
    border-bottom: 1px solid var(--text-color);
}