:root{--bg: #ffffff;--bg-soft: #f7f7f7;--fg: #3c3c3c;--muted: #777;--border: #e5e5e5;--gorria: #d52b1e;--berdea: #009b48;--ok-bg: #d7ffb8;--ok: #58a700;--bad-bg: #ffdfe0;--bad: #ea2b2b;--locked: #e5e5e5;--locked-fg: #afafaf;--c: var(--gorria);--c-dark: color-mix(in srgb, var(--c) 72%, black);--c-soft: color-mix(in srgb, var(--c) 14%, var(--bg));--safe-b: env(safe-area-inset-bottom, 0px);color-scheme:light;font-family:Nunito,system-ui,-apple-system,sans-serif;-webkit-tap-highlight-color:transparent}@media (prefers-color-scheme: dark){:root{--bg: #131f24;--bg-soft: #1b2b32;--fg: #f1f7fb;--muted: #9db0ba;--border: #37464f;--ok-bg: #1f3a14;--ok: #79d634;--bad-bg: #3d1a1c;--bad: #ff6b6b;--locked: #37464f;--locked-fg: #6b7d87;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--fg);overscroll-behavior-y:none}h1,h2,p{margin:0}button{font:inherit;font-weight:800;padding:.8rem 1rem;border-radius:16px;cursor:pointer;border:2px solid var(--border);border-bottom-width:4px;background:var(--bg);color:var(--fg);touch-action:manipulation;transition:transform .05s}button:active:not(:disabled){transform:translateY(2px);border-bottom-width:2px;margin-bottom:2px}button:disabled{cursor:default}button.primary{background:var(--c);color:#fff;border:none;box-shadow:0 4px 0 var(--c-dark);letter-spacing:.06em;width:100%;min-height:52px}button.primary:active:not(:disabled){transform:translateY(4px);box-shadow:none;margin:0}button.primary:disabled{background:var(--locked);color:var(--locked-fg);box-shadow:0 4px color-mix(in srgb,var(--locked) 80%,black)}button.ghost{border:none;background:none;font-size:1.5rem;padding:.3rem .5rem;color:var(--muted)}.splash{min-height:100dvh;display:grid;place-content:center;justify-items:center;gap:1rem;text-align:center;font-weight:800;color:var(--muted)}.ikurrina{border-radius:4px;box-shadow:0 1px #00000026;flex-shrink:0}.topbar{position:sticky;top:0;z-index:10;background:var(--bg);padding:calc(env(safe-area-inset-top,0px) + 10px) 16px 10px;border-bottom:2px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:8px}.brand{display:flex;align-items:center;gap:8px;white-space:nowrap}.brand img{border-radius:9px}.wordmark{font-weight:900;font-size:1.3rem;letter-spacing:-.01em}.wordmark span:first-child{color:var(--gorria)}.wordmark span:last-child{color:var(--berdea)}.splash .wordmark{font-size:2rem}.chips{display:flex;gap:6px}.chip{font-weight:800;font-size:.9rem;padding:4px 8px;border-radius:10px;white-space:nowrap}.chip.streak{color:#ff9600}.chip.xp{color:#1cb0f6}.chip.learned{color:var(--berdea)}@media (max-width: 380px){.chip.learned{display:none}.wordmark{font-size:1.1rem}.brand .ikurrina{display:none}}.path{max-width:520px;margin:0 auto;padding:16px 16px calc(32px + var(--safe-b))}.review-card{width:100%;display:flex;align-items:center;gap:12px;text-align:left;margin-bottom:20px;border-color:#ff9600;background:color-mix(in srgb,#ff9600 12%,var(--bg))}.review-card strong{display:block;font-size:1.05rem}.review-card small{color:var(--muted);font-weight:700}.review-icon{font-size:1.6rem;width:44px;height:44px;display:grid;place-items:center;border-radius:50%;background:#ff9600;color:#fff;flex-shrink:0}.chev{margin-left:auto;font-size:1.8rem;color:#ff9600}.unit{margin-bottom:28px}.unit-banner{background:var(--c);color:#fff;border-radius:16px;padding:14px 16px;box-shadow:0 4px 0 var(--c-dark);display:flex;align-items:center;justify-content:space-between;gap:8px;position:relative;overflow:hidden}.unit-banner:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;opacity:.12;background:linear-gradient(28deg,transparent 47%,#fff 47% 53%,transparent 53%),linear-gradient(-28deg,transparent 47%,#fff 47% 53%,transparent 53%)}.unit-banner small{font-weight:800;opacity:.85;letter-spacing:.08em}.unit-banner h2{font-size:1.4rem;font-weight:900}.unit-banner p{font-weight:700;opacity:.9;font-size:.9rem}.unit-banner svg,.unit-banner img{flex-shrink:0;filter:drop-shadow(0 2px 0 rgba(0,0,0,.15))}.unit.locked .unit-banner{opacity:.6}.nodes{position:relative;display:flex;flex-direction:column;align-items:center;gap:18px;padding:60px 0 8px}.side-char{position:absolute;top:110px;pointer-events:none;z-index:0}.unit.locked .side-char{opacity:.45}.node-wrap{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;width:100%}.node-slot{position:relative;display:flex;flex-direction:column;align-items:center}.node{width:72px;height:66px;border-radius:50%;border:none;padding:0;display:grid;place-items:center;background:var(--c);box-shadow:0 7px 0 var(--c-dark);color:#fff}.node:active{transform:translateY(5px);box-shadow:0 2px 0 var(--c-dark);border-bottom-width:0;margin:0}.node.locked{background:var(--locked);box-shadow:0 7px color-mix(in srgb,var(--locked) 75%,black);color:var(--locked-fg)}.node.kind-chest{background:none;box-shadow:none;width:84px;height:76px}.node.kind-chest.current,.node.kind-chest.done{animation:wiggle 2.4s ease-in-out infinite}.node.current:not(.kind-chest){outline:6px solid var(--c-soft);outline-offset:4px}.start-tip{position:absolute;bottom:calc(100% + 10px);background:var(--bg);color:var(--c);border:2px solid var(--border);font-weight:900;padding:6px 12px;border-radius:12px;white-space:nowrap;animation:bob 1.2s ease-in-out infinite}.start-tip:after{content:"";position:absolute;left:50%;top:100%;width:10px;height:10px;background:var(--bg);border-right:2px solid var(--border);border-bottom:2px solid var(--border);transform:translate(-50%,-5px) rotate(45deg)}.popover{margin-top:16px;width:min(320px,100%);background:var(--c);color:#fff;border-radius:16px;padding:14px;display:grid;gap:8px;text-align:left;box-shadow:0 4px 0 var(--c-dark);animation:pop .15s ease-out}.popover.locked{background:var(--bg-soft);color:var(--muted);box-shadow:none;border:2px solid var(--border)}.popover .words{font-weight:700;opacity:.95}.popover button.primary{background:#fff;color:var(--c);box-shadow:0 4px #0003}.foot{text-align:center;padding:8px 0 24px}.muted{color:var(--muted);font-weight:700}.lesson{max-width:600px;margin:0 auto;min-height:100dvh;padding:calc(env(safe-area-inset-top,0px) + 12px) 16px calc(150px + var(--safe-b))}.lesson header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.bar{flex:1;height:16px;border-radius:8px;background:var(--locked);overflow:hidden}.bar div{height:100%;border-radius:8px;background:var(--c);transition:width .35s ease;background-image:linear-gradient(to bottom,rgba(255,255,255,.3) 0 30%,transparent 30%)}.combo{font-weight:900;color:#ff9600}.lesson h2{font-size:1.4rem;font-weight:900;margin-bottom:16px}.speech{display:flex;align-items:flex-end;gap:4px;margin-bottom:24px}.speech>svg,.speech>img{flex-shrink:0}.bubble{position:relative;border:2px solid var(--border);border-radius:16px;padding:12px 14px;margin-bottom:40px;background:var(--bg);flex:1;min-width:0}.bubble:before{content:"";position:absolute;left:-9px;bottom:16px;width:14px;height:14px;background:var(--bg);border-left:2px solid var(--border);border-bottom:2px solid var(--border);transform:rotate(45deg)}.bubble.up{margin:12px 0 0;max-width:360px}.bubble.up:before{left:50%;top:-9px;bottom:auto;transform:translate(-50%) rotate(135deg)}.bubble .eu{font-weight:800;font-size:1.1rem}.bubble .es{color:var(--muted);font-weight:600;margin-top:4px}.prompt{font-size:1.6rem;font-weight:800;overflow-wrap:anywhere}.prompt.small{font-size:1.15rem}.options{display:grid;gap:10px}.options button{display:flex;align-items:center;gap:12px;text-align:left;font-size:1.05rem;min-height:56px}.options .key{width:28px;height:28px;border:2px solid var(--border);border-radius:8px;display:grid;place-items:center;font-size:.85rem;color:var(--muted);flex-shrink:0}.options button.selected{border-color:#84d8ff;background:color-mix(in srgb,#1cb0f6 14%,var(--bg));color:#1899d6}.options button.right{border-color:var(--ok);background:var(--ok-bg);color:var(--ok)}.options button.wrong{border-color:var(--bad);background:var(--bad-bg);color:var(--bad)}input{font:inherit;font-size:1.15rem;font-weight:700;width:100%;padding:14px;border-radius:16px;min-height:60px;border:2px solid var(--border);background:var(--bg-soft);color:var(--fg);outline:none}input:focus{border-color:var(--c)}.tiles{display:flex;flex-wrap:wrap;gap:8px;min-height:58px;margin-bottom:16px;align-content:flex-start}.tiles button{padding:8px 14px;font-weight:700;font-size:1.05rem}.tiles.answer{min-height:120px;padding:8px 0;background:repeating-linear-gradient(to bottom,transparent 0 56px,var(--border) 56px 58px)}.tiles.bank{justify-content:center}.tiles .ghost-tile{background:var(--locked);color:transparent;border-color:var(--locked)}.bottom-bar{position:fixed;left:0;right:0;bottom:0;z-index:5;background:var(--bg);border-top:2px solid var(--border);padding:16px 16px calc(16px + var(--safe-b))}.bottom-bar>*,.feedback>*{max-width:600px;margin-left:auto;margin-right:auto}.feedback{position:fixed;left:0;right:0;bottom:0;z-index:6;padding:16px 16px calc(16px + var(--safe-b));display:grid;gap:14px;animation:slide-up .18s ease-out}.feedback.ok{background:var(--ok-bg);color:var(--ok);--c: var(--ok)}.feedback.bad{background:var(--bad-bg);color:var(--bad);--c: var(--bad)}.feedback-row{display:flex;align-items:center;gap:12px;width:100%}.feedback-row svg,.feedback-row img{flex-shrink:0}.feedback strong{display:block;font-size:1.3rem;font-weight:900}.feedback small{display:block;font-weight:700;opacity:.8}.feedback p{margin-top:6px;font-weight:700;overflow-wrap:anywhere}.intro-body{display:flex;flex-direction:column;align-items:center;text-align:center;padding-top:4vh;gap:8px}.intro-body svg,.intro-body img{animation:bob 2s ease-in-out infinite}.done h1{font-size:1.8rem;font-weight:900;color:var(--c);margin-top:8px}.result-tiles{display:grid;grid-template-columns:1fr 1fr;gap:12px;width:100%;max-width:340px;margin-top:20px}.tile{border-radius:16px;border:2px solid;overflow:hidden;display:grid}.tile small{color:#fff;font-weight:900;padding:4px;letter-spacing:.06em}.tile strong{font-size:1.5rem;font-weight:900;padding:12px 4px;background:var(--bg)}.tile.xp{border-color:#ffc800;background:#ffc800;color:#ff9600}.tile.acc{border-color:var(--ok);background:var(--ok);color:var(--ok)}.confetti{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden}.confetti span{position:absolute;top:-20px;width:12px;height:18px;border-radius:3px;animation:fall 2.6s ease-in infinite}@keyframes bob{50%{transform:translateY(-6px)}}@keyframes wiggle{0%,80%,to{transform:rotate(0)}85%{transform:rotate(-8deg)}90%{transform:rotate(8deg)}95%{transform:rotate(-4deg)}}@keyframes pop{0%{transform:scale(.92);opacity:0}}@keyframes slide-up{0%{transform:translateY(100%)}}@keyframes fall{to{transform:translateY(110vh) rotate(540deg)}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation:none!important;transition:none!important}}