.grupos-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 25px; }
    .grupo-card { background-color: var(--card-bg); border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; transition: all 0.3s; border: 1px solid var(--border-color); }
    .grupo-card:hover { transform: translateY(-5px); box-shadow: 0 4px 15px rgba(0,0,0,0.6); }
    .grupo-card.vip { box-shadow: 0 0 0 2px var(--vip-gold); border-color: var(--vip-gold); }
    .card-image-container { position: relative; }
    .grupo-img { width: 100%; height: 320px; object-fit: cover; display: block; background-color: var(--gray-dark); }
    .vip-star { position: absolute; top: 8px; right: 8px; font-size: 46px; color: var(--vip-gold); text-shadow: 0 6px 18px rgba(255, 193, 7, 0.45); filter: drop-shadow(0 4px 8px rgba(0,0,0,0.45)); transform: rotate(-8deg); }
    .card-content { padding: 15px; }
    .card-category { display: inline-block; background-color: var(--gray-dark); color: white; font-size: 11px; font-weight: 600; padding: 4px 10px; border-radius: 4px; margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.5px; }
    .grupo-title { font-size: 20px; font-weight: 700; margin-bottom: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text-primary); }
    .grupo-desc { font-size: 16px; color: var(--text-secondary); margin-bottom: 15px; line-height: 1.5; }
    .card-button { display: block; width: 100%; padding: 12px; text-align: center; background-color: var(--accent-green); color: white; border-radius: 8px; text-decoration: none; font-weight: 700; transition: all 0.2s; }
    .card-button:hover { background-color: var(--accent-green-hover); }
    .loading, .empty { text-align: center; padding: 60px 20px; grid-column: 1 / -1; font-size: 18px; color: var(--text-secondary); background-color: var(--card-bg); border-radius: 12px; border: 1px solid var(--border-color); }