:root{--bg-0: #080b0e;--bg-1: #0b0f12;--bg-2: #11171c;--surface: rgba(255, 255, 255, .04);--surface-2: rgba(255, 255, 255, .07);--border: rgba(255, 255, 255, .09);--border-strong: rgba(255, 255, 255, .16);--ink: #eef3f5;--ink-soft: #aebac1;--ink-faint: #6c7a82;--turq: #2fe6c8;--turq-deep: #14b8a6;--turq-glow: rgba(47, 230, 200, .35);--amber: #ffb547;--amber-glow: rgba(255, 181, 71, .3);--good: #34e0a1;--bad: #ff6b6b;--almost: #ffd166;--radius: 20px;--radius-sm: 13px;--radius-pill: 999px;--shadow-card: 0 20px 50px -24px rgba(0, 0, 0, .9);--shadow-glow: 0 0 0 1px var(--border), 0 24px 60px -28px var(--turq-glow);--font-display: "Bricolage Grotesque", "Sora", system-ui, sans-serif;--font-body: "Inter", system-ui, -apple-system, sans-serif;--ease: cubic-bezier(.22, 1, .36, 1);--safe-b: env(safe-area-inset-bottom, 0px);--safe-t: env(safe-area-inset-top, 0px)}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg-1);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overscroll-behavior:none}body{background:radial-gradient(120% 80% at 15% -10%,rgba(47,230,200,.12),transparent 55%),radial-gradient(100% 70% at 95% 8%,rgba(255,181,71,.08),transparent 50%),var(--bg-1);background-attachment:fixed}button{font-family:inherit;cursor:pointer}input{font-family:inherit}::selection{background:var(--turq-glow);color:#00110d}@keyframes rise{0%{opacity:0;transform:translateY(14px) scale(.99)}to{opacity:1;transform:none}}@keyframes pop{0%{transform:scale(.96)}50%{transform:scale(1.03)}to{transform:scale(1)}}@keyframes shake{10%,90%{transform:translate(-2px)}20%,80%{transform:translate(4px)}30%,50%,70%{transform:translate(-7px)}40%,60%{transform:translate(7px)}}@keyframes pulseGlow{0%,to{box-shadow:0 0 0 0 var(--turq-glow)}50%{box-shadow:0 0 36px 4px var(--turq-glow)}}@keyframes confettiFall{to{transform:translateY(120vh) rotate(720deg);opacity:0}}#app{min-height:100%;max-width:560px;margin:0 auto;padding:calc(var(--safe-t) + 18px) 20px calc(var(--safe-b) + 24px);display:flex;flex-direction:column}.screen{animation:rise .5s var(--ease) both;flex:1;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;letter-spacing:-.02em;font-size:20px}.brand .dot{width:12px;height:12px;border-radius:50%;background:var(--turq);box-shadow:0 0 14px var(--turq-glow)}.streak{display:flex;align-items:center;gap:6px;font-weight:600;color:var(--amber);font-size:15px}.progress{height:8px;border-radius:var(--radius-pill);background:var(--surface);overflow:hidden;margin-bottom:26px}.progress>i{display:block;height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,var(--turq-deep),var(--turq));box-shadow:0 0 16px var(--turq-glow);transition:width .5s var(--ease)}.card{background:linear-gradient(180deg,var(--surface-2),var(--surface));border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow-card);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:12px;font-weight:700;color:var(--turq);margin:0 0 10px}.prompt-label{color:var(--ink-soft);font-size:15px;margin:0 0 18px}.hero{font-family:var(--font-display);font-weight:700;letter-spacing:-.03em;line-height:1.02;font-size:clamp(40px,13vw,68px);margin:8px 0 6px}.hero.tr{color:var(--ink)}.gloss{color:var(--ink-faint);font-size:17px}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--border-strong);background:var(--surface-2);color:var(--ink);border-radius:var(--radius-sm);padding:16px 18px;font-size:16px;font-weight:600;width:100%;transition:transform .12s var(--ease),background .2s,border-color .2s}.btn:active{transform:scale(.97)}.btn.primary{background:linear-gradient(180deg,var(--turq),var(--turq-deep));color:#00130f;border:none;box-shadow:0 12px 30px -12px var(--turq-glow)}.btn.ghost{background:transparent}.btn:disabled{opacity:.4}.btn-row{display:flex;gap:12px;margin-top:auto;padding-top:18px}.btn-row .btn{flex:1}.tray{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.tile{border:1px solid var(--border-strong);background:var(--surface-2);color:var(--ink);border-radius:var(--radius-pill);padding:12px 18px;font-size:17px;font-weight:600;transition:transform .12s var(--ease),opacity .2s}.tile:active{transform:scale(.94)}.tile.used{opacity:.25;pointer-events:none}.answer-line{min-height:58px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:12px;border-radius:var(--radius-sm);border:1px dashed var(--border-strong);margin-top:8px}.answer-line:empty:before{content:"tap the words";color:var(--ink-faint);font-size:14px}.field{width:100%;background:var(--bg-2);border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:16px 18px;font-size:19px;color:var(--ink);margin-top:18px;transition:border-color .2s,box-shadow .2s}.field:focus{outline:none;border-color:var(--turq-deep);box-shadow:0 0 0 3px var(--turq-glow)}.field::placeholder{color:var(--ink-faint)}.flip{perspective:1200px;margin-top:14px}.flip-inner{position:relative;transition:transform .55s var(--ease);transform-style:preserve-3d;min-height:200px}.flip.flipped .flip-inner{transform:rotateY(180deg)}.flip-face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;display:grid;place-content:center;text-align:center}.flip-back{transform:rotateY(180deg)}.mic{width:96px;height:96px;border-radius:50%;margin:22px auto 8px;display:grid;place-items:center;background:linear-gradient(180deg,var(--surface-2),var(--surface));border:1px solid var(--border-strong);font-size:38px}.mic.live{animation:pulseGlow 1.3s infinite;border-color:var(--turq)}.audio-btn{width:84px;height:84px;border-radius:50%;margin:8px auto 0;display:grid;place-items:center;background:linear-gradient(180deg,var(--turq),var(--turq-deep));color:#00130f;border:none;font-size:34px;box-shadow:0 14px 34px -14px var(--turq-glow)}.audio-btn:active{transform:scale(.92)}.feedback{margin-top:16px;border-radius:var(--radius-sm);padding:14px 16px;font-weight:600;animation:rise .3s var(--ease) both}.feedback.correct{background:#34e0a11f;border:1px solid rgba(52,224,161,.4);color:var(--good)}.feedback.almost{background:#ffd1661a;border:1px solid rgba(255,209,102,.4);color:var(--almost)}.feedback.wrong{background:#ff6b6b1a;border:1px solid rgba(255,107,107,.4);color:var(--bad)}.feedback small{display:block;color:var(--ink-soft);font-weight:500;margin-top:4px}.shake{animation:shake .5s var(--ease)}.popped{animation:pop .35s var(--ease)}.rate-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:16px}.rate{padding:13px 6px;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--surface-2);font-size:13px;font-weight:700;color:var(--ink-soft)}.rate.again{color:var(--bad)}.rate.good{color:var(--turq)}.rate.easy{color:var(--good)}.grammar-body{color:var(--ink-soft);line-height:1.6;font-size:16px;margin-top:6px}.grammar-body strong,.grammar-body b{color:var(--ink)}.grammar-body em{color:var(--amber);font-style:normal}.examples{width:100%;border-collapse:collapse;margin-top:18px}.examples td{padding:11px 8px;border-top:1px solid var(--border);font-size:15px;vertical-align:top}.examples td.tr{color:var(--turq);font-weight:700;white-space:nowrap}.examples td.en{color:var(--ink-soft)}.examples td.note{color:var(--ink-faint);font-size:13px}.home-hero{text-align:center;margin:18px 0 8px}.home-hero h1{font-family:var(--font-display);font-size:clamp(34px,11vw,56px);letter-spacing:-.03em;margin:0}.home-hero p{color:var(--ink-soft);font-size:17px;margin:10px 0 0}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:26px 0}.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 12px;text-align:center}.stat b{display:block;font-family:var(--font-display);font-size:26px;color:var(--turq)}.stat span{font-size:12px;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.1em}.profile-bars{display:flex;flex-direction:column;gap:12px;margin-top:4px}.pbar .pbar-top{display:flex;justify-content:space-between;font-size:14px;color:var(--ink-soft);margin-bottom:6px}.pbar .track{height:9px;border-radius:var(--radius-pill);background:var(--surface);overflow:hidden}.pbar .track>i{display:block;height:100%;background:linear-gradient(90deg,var(--turq-deep),var(--turq));border-radius:inherit;transition:width .6s var(--ease)}.result-hero{text-align:center;margin:auto 0}.result-hero .big{font-family:var(--font-display);font-size:clamp(52px,16vw,88px);letter-spacing:-.04em}.result-hero .sub{color:var(--ink-soft);font-size:18px;margin-top:8px}.confetti{position:fixed;top:-20px;width:9px;height:14px;border-radius:2px;pointer-events:none;z-index:50;animation:confettiFall linear forwards}.section-title{font-family:var(--font-display);font-size:20px;letter-spacing:-.01em;margin:26px 0 12px}.muted{color:var(--ink-faint);font-size:14px}.link{color:var(--turq);background:none;border:none;padding:0;font-size:14px;text-decoration:underline}