.display span{color:#fff;font-size:3.6rem;font-weight:300;word-break:break-all}.love-box{background:#111;border-radius:20px;padding:26px;max-width:300px;text-align:center;color:#fff;animation:lovePop .6s ease}.love-box h2{margin-bottom:12px;color:#ff4d6d}.love-box p{font-size:.95rem;line-height:1.5;margin-bottom:12px}.love-box span{font-size:.85rem;color:#aaa}@keyframes lovePop{0%{transform:scale(.5);opacity:0}to{transform:scale(1);opacity:1}}*{margin:0;padding:0;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,Helvetica Neue,sans-serif}.app{min-height:100svh;display:flex;justify-content:center;align-items:center;background:#000}.calculator{width:320px;background:#000;padding:20px}.display{height:120px;display:flex;justify-content:flex-end;align-items:flex-end;padding:10px}.display span{color:#fff;font-size:3.6rem;font-weight:300}.buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.btn{height:68px;border-radius:50%;border:none;font-size:1.6rem;cursor:pointer;background:#333;color:#fff}.btn:active{filter:brightness(1.4)}.btn:nth-child(-n+3){background:#a5a5a5;color:#000}.btn:nth-child(4n){background:#ff9f0a;color:#fff}.btn:nth-child(17){grid-column:span 2;border-radius:34px;text-align:left;padding-left:26px}.love-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000d9;display:flex;justify-content:center;align-items:center;z-index:999}.love-box{background:#111;border-radius:20px;padding:24px;max-width:300px;text-align:center;color:#fff;position:relative;animation:pop .4s ease}.love-box h2{color:#ff4d6d;margin-bottom:10px}.love-box p{font-size:.95rem;line-height:1.5}.love-box span{display:block;margin-top:10px;color:#aaa}.close-btn{position:absolute;top:10px;right:12px;background:none;border:none;color:#fff;font-size:1.2rem;cursor:pointer}@keyframes pop{0%{transform:scale(.6);opacity:0}to{transform:scale(1);opacity:1}}