.app{width:100%;max-width:520px;background:#fff;border-radius:16px;box-shadow:0 20px 60px #00000026;overflow:hidden}.header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;text-align:center;padding:2rem 1.5rem}.header h1{font-size:1.8rem;margin-bottom:.4rem}.subtitle{font-size:.9rem;opacity:.85}.form{padding:1.5rem;display:flex;flex-direction:column;gap:1rem}.form-group{display:flex;flex-direction:column;gap:.4rem}.form-group label{font-size:.85rem;font-weight:600;color:#555}.hint{font-weight:400;color:#999;font-size:.8rem}.form-group input[type=date],.form-group input[type=time]{padding:.6rem .8rem;border:1.5px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:border-color .2s;outline:none}.form-group input[type=date]:focus,.form-group input[type=time]:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea26}.checkbox-group label{flex-direction:row;display:flex;align-items:center;gap:.5rem;cursor:pointer}.checkbox-group input[type=checkbox]{width:18px;height:18px;accent-color:#667eea;cursor:pointer}.checkbox-group span{font-size:.9rem;font-weight:500;color:#444}.submit-btn{padding:.75rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .2s,transform .1s;margin-top:.5rem}.submit-btn:hover:not(:disabled){opacity:.9;transform:translateY(-1px)}.submit-btn:active:not(:disabled){transform:translateY(0)}.submit-btn:disabled{opacity:.5;cursor:not-allowed}.error{margin:0 1.5rem;padding:.75rem 1rem;background:#fff0f0;border:1px solid #ffcdd2;border-radius:8px;color:#c62828;font-size:.9rem}.result{padding:1.5rem;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.birthday-today{text-align:center;font-size:1.2rem;font-weight:700;color:#e91e63;background:#fce4ec;padding:.75rem;border-radius:8px;margin-bottom:1.2rem}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:.8rem;margin-bottom:1.2rem}.result-card{background:#f8f9ff;border-radius:10px;padding:1rem;text-align:center}.result-card.highlight{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.result-card.highlight .card-label{color:#fffc}.card-value{font-size:1.4rem;font-weight:700;margin-bottom:.2rem}.card-label{font-size:.75rem;color:#888}.result-details{background:#f8f9ff;border-radius:10px;padding:.8rem 1rem}.detail-row{display:flex;justify-content:space-between;align-items:center;padding:.6rem 0;border-bottom:1px solid #eee}.detail-row:last-child{border-bottom:none}.detail-label{font-size:.85rem;color:#666}.detail-value{font-size:.9rem;font-weight:600;color:#333}.footer{text-align:center;padding:1rem 1.5rem 1.5rem;color:#aaa;font-size:.75rem}.watermark{display:inline-block;font-weight:600;letter-spacing:.08em;color:#bbb;background:linear-gradient(90deg,#667eea,#764ba2,#e91e63);background-size:200% auto;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;transition:all .4s ease;cursor:default;position:relative}.watermark:after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1.5px;background:linear-gradient(90deg,#667eea,#764ba2,#e91e63);background-size:200% auto;transform:scaleX(0);transform-origin:center;transition:transform .4s ease}.watermark:hover{background-position:right;filter:brightness(1.2) drop-shadow(0 0 6px rgba(102,126,234,.5));transform:translateY(-1px)}.watermark:hover:after{transform:scaleX(1);background-position:right}@media (max-width: 480px){#root{padding:0}.app{border-radius:0;min-height:100vh}.result-grid{grid-template-columns:1fr 1fr;gap:.6rem}.card-value{font-size:1.1rem}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;color:#333}#root{min-height:100vh;display:flex;justify-content:center;align-items:flex-start;padding:2rem 1rem}