.rng-tool{background:#fff;border-radius:16px;border:1px solid var(--gray-200);padding:2rem;margin-top:2rem;display:flex;flex-direction:column;align-items:center;gap:1.5rem}.rng-controls,.rng-display{display:flex;flex-wrap:wrap;justify-content:center}.rng-display{font-size:4rem;font-weight:700;color:var(--primary-600);min-height:80px;align-items:center;gap:.5rem;padding:1rem;text-align:center;word-break:break-all;transition:transform .2s}.rng-display.rng-animate{transform:scale(1.1)}.rng-controls{gap:1rem;width:100%}.rng-section{flex:1;min-width:100px;max-width:160px}.rng-label{font-size:.85rem;font-weight:600;color:var(--gray-600);text-transform:uppercase;margin-bottom:.5rem;text-align:center}.rng-input{width:100%;padding:.6rem .75rem;border:1px solid var(--gray-200);border-radius:8px;font-size:1.1rem;color:var(--gray-800);background:var(--gray-50);text-align:center;box-sizing:border-box}.rng-input:focus{outline:0;border-color:var(--primary-500);box-shadow:0 0 0 3px rgba(235,57,68,.1)}.rng-options{display:flex;gap:1.5rem;flex-wrap:wrap;justify-content:center}.rng-checkbox{display:flex;align-items:center;gap:.4rem;font-size:.9rem;color:var(--gray-700);cursor:pointer}.rng-checkbox input{accent-color:var(--primary-500)}.rng-btn{padding:.9rem 3rem;background:var(--primary-500);color:#fff;border:0;border-radius:10px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .2s}.rng-btn:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:0 4px 12px rgba(235,57,68,.3)}.rng-btn:active{transform:translateY(0)}.rng-history{width:100%;max-height:120px;overflow-y:auto;font-size:.85rem;color:var(--gray-500);border-top:1px solid var(--gray-200);padding-top:.75rem;text-align:center}.rng-history-item{padding:.25rem 0}@media (max-width:600px){.rng-tool{padding:1rem}.rng-display{font-size:2.5rem}.rng-section{max-width:none}}