body { font-family: 'Inter', 'Segoe UI', Roboto, sans-serif; background: radial-gradient(circle at top right, #1e3a8a, #0f172a); min-height: 100vh; margin: 0; color: #f8fafc; }
.container { max-width: 900px; margin: 0 auto; padding: 20px; }
header { background: rgba(15, 23, 42, 0.8); backdrop-filter: blur(12px); color: white; padding: 25px 0; text-align: center; position: sticky; top: 0; z-index: 100; border-bottom: 1px solid rgba(255,255,255,0.1); }
header span { color: #38bdf8; font-weight: 800; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; }
.card { background: rgba(255, 255, 255, 0.95); padding: 30px; border-radius: 16px; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1); color: #1e293b; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); border: 1px solid rgba(255,255,255,0.2); }
.card:hover { transform: translateY(-8px); box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); background: #ffffff; }
.icon { font-size: 48px; margin-bottom: 15px; filter: drop-shadow(0 4px 3px rgba(0,0,0,0.1)); }
.btn { display: inline-block; background: #2563eb; color: white; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 600; transition: background 0.2s; }
.btn:hover { background: #1d4ed8; }
.footer { display: flex; justify-content: space-between; align-items: center; margin-top: 25px; font-size: 0.9em; border-top: 1px solid #eee; padding-top: 15px; }

/* Ottimizzazione per dispositivi mobili */
@media (max-width: 600px) {
    .grid { grid-template-columns: 1fr; }
    .container { padding: 10px; }
    header h1 { font-size: 1.5rem; }
}