:root {
    --primary: #2c3e50;
    --accent: #3498db;
    --bg: #f4f7f6;
    --text: #333;
}

.bloques-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
}

.bloque-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    cursor: pointer;
    border-top: 5px solid var(--accent);
}

.bloque-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.15);
}

.bloque-num {
    font-weight: bold;
    color: var(--accent);
    text-transform: uppercase;
    font-size: 0.8rem;
}