/* Styles */
*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,'Helvetica Neue',Arial,'Noto Sans','Apple Color Emoji','Segoe UI Emoji';background:#f6fbf6;color:#18391f}
.app-header{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;background:linear-gradient(90deg,#2e7d32,#60ad5e);color:#fff;position:sticky;top:0;z-index:50}
.app-header .brand{display:flex;align-items:center;gap:12px}
.app-header img{height:48px;width:auto;border-radius:6px;background:#fff}
.app-header h1{font-size:1.4rem;margin:0}
.app-header p{margin:0;font-size:.9rem;opacity:.9}
.header-actions{display:flex;gap:8px;align-items:center}
.container{max-width:1100px;margin:16px auto;padding:0 16px}
.card{background:#ffffff;border:1px solid #e0e6e0;border-radius:14px;padding:12px;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.controls .row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:8px 0}
.controls .row.responsive>div{display:flex;flex-direction:column;gap:4px;min-width:160px}
.controls .row.info{justify-content:space-between}
label{font-weight:600}
label.chk{display:flex;align-items:center;gap:8px}
select,input[type=number],input[type=range]{padding:6px;border-radius:10px;border:1px solid #cfe3cf;background:#fff}
.btn{padding:10px 14px;border-radius:12px;border:1px solid #2e7d32;background:#2e7d32;color:#fff;cursor:pointer;font-weight:600}
.btn.primary{background:#1b5e20;border-color:#1b5e20}
.btn.subtle{background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.4);color:#fff}
.btn.outline{background:transparent;color:#2e7d32}
.btn:disabled{opacity:.5;cursor:not-allowed}
.board{display:grid;grid-template-columns:repeat(2,minmax(220px,1fr));gap:16px;margin:16px auto;transform-origin:top left}
@media (min-width:720px){.board{grid-template-columns:repeat(4,minmax(160px,1fr))}}
.option{position:relative;display:flex;align-items:center;justify-content:center;background:#ffffff;border:2px solid #b8dcb8;border-radius:18px;padding:20px;min-height:140px;font-size:64px;cursor:pointer;transition:transform .1s ease, box-shadow .2s ease, border-color .2s}
.option:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.08)}
.option.correct{border-color:#2e7d32;box-shadow:0 0 0 4px rgba(46,125,50,.15)}
.option.wrong{border-color:#c62828;box-shadow:0 0 0 4px rgba(198,40,40,.15)}
.option .badge{position:absolute;top:8px;right:10px;background:#2e7d32;color:#fff;border-radius:999px;padding:2px 8px;font-size:12px;display:none}
.option.found .badge{display:block}
#balloonLayer{position:fixed;inset:0;pointer-events:none;overflow:hidden}
.balloon{position:absolute;bottom:-120px;font-size:42px;animation:floatUp 2.6s ease-out forwards;filter:drop-shadow(0 6px 8px rgba(0,0,0,.15))}
@keyframes floatUp{to{transform:translateY(-120vh);opacity:0}}
.certificate{position:fixed;inset:0;background:#fffffff2;backdrop-filter:blur(2px);display:flex;justify-content:center;align-items:center;padding:24px}
.certificate.hidden{display:none}
.certificate-inner{width:min(800px,92vw);border:6px double #2e7d32;border-radius:20px;background:#fff;padding:24px;text-align:center;box-shadow:0 10px 30px rgba(0,0,0,.15)}
.certificate-inner img{height:60px}
.certificate-inner h2{margin:.3em 0 0;font-size:2.2rem;color:#1b5e20}
.certificate-inner .big{font-size:2.6rem;margin:.1em 0 .3em}
.certificate-inner .small{color:#2e7d32}
.cert-actions{display:flex;gap:12px;justify-content:center;margin-top:12px}
.app-footer{display:flex;gap:8px;justify-content:center;align-items:center;padding:16px;color:#2a4a30}
.app-footer .sep{opacity:.6}
dialog{border:none;border-radius:12px;padding:16px;max-width:680px}
@media print {.app-header,.controls,.board,.app-footer,#balloonLayer,#howtoDialog,.header-actions{display:none !important} .certificate{position:static;display:block;background:#fff} body{background:#fff}}