:root{--bg:#faf7f1;--surface:#fff;--ink:#3a362f;--muted:#7a7468;--line:#e7e1d5;--accent:#5c8a6b;--accent-soft:#e7efe7;--ok:#5c8a6b;--ok-soft:#e7efe7;--ko:#c7554a;--ko-soft:#fbe7e4;--radius:20px;--tap:56px;--shadow:0 8px 24px -12px #3a362f40;--font-base:var(--font-nunito-sans), system-ui, sans-serif;--font-display:var(--font-fraunces), Georgia, serif;--bal-rose:#ead3d6;--bal-slate:#cbd6e0;--bal-lavender:#dcd3ea;--bal-sand:#ede0c4}*,:before,:after{box-sizing:border-box}body{background:var(--bg);color:var(--ink);font-family:var(--font-base);-webkit-font-smoothing:antialiased;touch-action:manipulation;margin:0;line-height:1.5}.bal-wrap{max-width:520px;padding:clamp(14px,4vw,20px);padding-bottom:calc(clamp(24px, 6vw, 40px) + env(safe-area-inset-bottom,0px));padding-left:calc(clamp(14px, 4vw, 20px) + env(safe-area-inset-left,0px));padding-right:calc(clamp(14px, 4vw, 20px) + env(safe-area-inset-right,0px));flex-direction:column;min-height:100dvh;margin:0 auto;display:flex}.bal-btn-nav{width:100%;min-height:var(--tap);background:var(--surface);border:1.5px solid var(--line);color:var(--muted);letter-spacing:.01em;-webkit-tap-highlight-color:transparent;border-radius:14px;justify-content:center;align-items:center;gap:8px;margin-bottom:20px;padding:14px 20px;font-size:clamp(.84rem,2.4vw,.92rem);font-weight:700;text-decoration:none;transition:border-color .2s,color .2s,background .2s;display:flex}.bal-btn-nav:hover,.bal-btn-nav:focus-visible{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.bal-btn-nav.bal-bottom{margin:28px 0 4px}.bal-head{text-align:center;margin-bottom:clamp(18px,4vw,24px)}.bal-head .bal-chip{background:var(--accent-soft);border-radius:16px;justify-content:center;align-items:center;width:54px;height:54px;margin-bottom:12px;font-size:1.6rem;display:inline-flex}.bal-head h1{font-family:var(--font-display);color:var(--ink);letter-spacing:-.01em;margin:0;font-size:clamp(1.35rem,5.5vw,1.6rem);font-weight:700}.bal-sub{color:var(--muted);margin-top:4px;font-size:clamp(.85rem,2.6vw,.95rem)}.bal-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:clamp(18px,4vw,24px);padding:clamp(18px,5vw,24px) clamp(14px,4vw,20px)}.bal-regla{text-align:center;color:var(--muted);margin:0 0 16px;font-size:clamp(.84rem,2.5vw,.9rem)}.bal-example{background:var(--bg);border-radius:14px;flex-direction:column;align-items:center;gap:8px;margin-bottom:16px;padding:14px;display:flex}.bal-example-label{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-size:.72rem;font-weight:800}.bal-example-row{align-items:center;gap:12px;display:flex}.bal-example-sym{font-family:var(--font-display);color:var(--ink);font-size:20px;font-weight:700}.bal-example-text{color:var(--muted);text-align:center;margin:0;font-size:.78rem;line-height:1.5}.bal-shape-wrap{flex-shrink:0;width:30px;height:30px}.bal-shape{width:100%;height:100%;display:inline-block}.bal-shape.circle{border-radius:50%}.bal-shape.square{border-radius:5px}.bal-shape.triangle{clip-path:polygon(50% 6%,95% 94%,5% 94%)}.bal-shape.diamond{clip-path:polygon(50% 2%,98% 50%,50% 98%,2% 50%)}.bal-status{text-align:center;color:var(--muted);min-height:20px;margin:0 0 14px;font-size:clamp(.82rem,2.5vw,.9rem);font-weight:700}.bal-items{grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:16px;display:grid}.bal-item{background:var(--bg);cursor:pointer;box-shadow:inset 0 0 0 2px var(--line);-webkit-tap-highlight-color:transparent;border:none;border-radius:12px;flex-direction:column;align-items:center;gap:6px;padding:10px 4px 12px;transition:box-shadow .15s;display:flex}.bal-item.bal-selected{box-shadow:inset 0 0 0 2.5px var(--ink)}.bal-item.bal-correct{box-shadow:inset 0 0 0 2.5px var(--ok)}.bal-item.bal-wrong{box-shadow:inset 0 0 0 2.5px var(--ko)}.bal-item.bal-item-static{cursor:default}.bal-badge{font-family:var(--font-display);color:var(--ink);min-height:18px;font-size:15px;font-weight:700}.bal-item.bal-wrong .bal-badge{color:var(--ko)}.bal-keypad{grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:18px;display:grid}.bal-key{border:1.5px solid var(--line);background:var(--surface);height:48px;font-family:var(--font-display);color:var(--ink);cursor:pointer;-webkit-tap-highlight-color:transparent;border-radius:12px;font-size:clamp(1rem,4vw,1.15rem);font-weight:700;transition:transform 80ms,background .15s}.bal-key:active{background:var(--accent-soft);transform:scale(.94)}.bal-key:disabled{opacity:.35;cursor:not-allowed}.bal-key-erase{background:var(--bg);border:1.5px solid var(--line);font-family:var(--font-base);letter-spacing:.04em;text-transform:uppercase;color:var(--muted);grid-column:span 4;font-size:12px;font-weight:800}.bal-clues-label{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);text-align:center;margin:0 0 10px;font-size:.72rem;font-weight:800}.bal-clues{flex-direction:column;gap:8px;margin-bottom:18px;display:flex}.bal-clue{background:var(--bg);border-radius:12px;justify-content:center;align-items:center;gap:10px;padding:10px 12px;display:flex}.bal-pan{justify-content:center;align-items:center;gap:4px;min-width:44px;display:flex}.bal-sym{font-family:var(--font-display);color:var(--muted);text-align:center;flex-shrink:0;width:20px;font-size:17px;font-weight:700}.bal-btn-submit{width:100%;min-height:var(--tap);background:var(--accent);color:#fff;font-family:var(--font-base);letter-spacing:.02em;cursor:pointer;-webkit-tap-highlight-color:transparent;border:none;border-radius:14px;font-size:clamp(.92rem,2.8vw,1rem);font-weight:700;transition:background .2s,transform .1s,opacity .15s}.bal-btn-submit:disabled{opacity:.45;cursor:not-allowed}.bal-btn-submit:active:not(:disabled){transform:scale(.98)}.bal-intentos{text-align:center;color:var(--muted);min-height:20px;margin:10px 0 0;font-size:clamp(.8rem,2.4vw,.85rem)}.bal-end{text-align:center;outline:none}.bal-end .bal-icono{margin-bottom:12px;font-size:clamp(2.8rem,9vw,3.5rem)}.bal-end .bal-big{font-family:var(--font-display);margin-bottom:8px;font-size:clamp(1.5rem,6vw,1.8rem);font-weight:700}.bal-end .bal-end-sub{color:var(--muted);margin-bottom:24px;font-size:clamp(.88rem,2.6vw,.95rem)}.bal-end.bal-win .bal-big{color:var(--ok)}.bal-end.bal-lose .bal-big{color:var(--ko)}.bal-items-review{margin-top:4px}.bal-share-box{background:var(--bg);border-radius:16px;margin-bottom:24px;padding:clamp(14px,4vw,16px)}.bal-share-box-title{margin-bottom:12px;font-size:.9rem;font-weight:700}.bal-share-grid{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.bal-share-btn{color:#fff;cursor:pointer;-webkit-tap-highlight-color:transparent;border:none;border-radius:10px;place-items:center;min-height:46px;padding:12px 4px;font-size:clamp(.74rem,2.2vw,.85rem);font-weight:700;text-decoration:none;transition:opacity .15s,transform .1s;display:grid}.bal-share-btn:hover{opacity:.9}.bal-share-btn:active{transform:scale(.97)}.bal-btn-copy{background:var(--ink)}.bal-btn-wa{background:#25d366}.bal-btn-tg{background:#08c}@media (max-width:340px){.bal-share-grid{grid-template-columns:1fr}}.bal-ver-btn{border:2px solid var(--line);width:100%;min-height:48px;color:var(--accent);font-family:var(--font-base);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border-radius:14px;margin-bottom:16px;font-size:clamp(.86rem,2.6vw,.95rem);font-weight:700;transition:border-color .2s,background .2s}.bal-ver-btn:hover{border-color:var(--accent);background:var(--accent-soft)}.bal-timer{background:var(--bg);border:1px solid var(--line);border-radius:18px;margin-top:10px;padding:14px 22px}.bal-timer .bal-label{color:var(--muted);text-transform:uppercase;letter-spacing:.05em;font-size:.78rem;font-weight:700;display:block}.bal-timer .bal-time{font-family:var(--font-display);color:var(--ink);font-variant-numeric:tabular-nums;font-size:clamp(1.2rem,4.5vw,1.4rem);font-weight:700}.bal-instructions{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(16px,4.5vw,20px)}.bal-instructions h2{margin:0 0 12px;font-size:clamp(1rem,3.2vw,1.1rem)}.bal-instructions ul{margin:0;padding:0;list-style:none}.bal-instructions li{color:var(--muted);align-items:flex-start;gap:8px;margin-bottom:8px;font-size:clamp(.88rem,2.6vw,.95rem);display:flex}.bal-instructions .bal-emoji{font-size:1.1rem}.bal-instructions strong{color:var(--ink)}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}