@import "https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&display=swap";:root{--pink:#ec4899;--purple:#8b5cf6;--blue:#3b82f6;--cyan:#06b6d4;--green:#10b981;--yellow:#f59e0b;--orange:#f97316;--red:#ef4444;--bg:#fff8f0;--bg-card:#ffffffd9;--bg-glass:#fff9;--text:#1e293b;--text-light:#64748b;--text-white:#fff;--shadow:0 4px 24px #00000014;--shadow-lg:0 8px 40px #0000001f;--shadow-glow:0 0 20px #8b5cf64d;--radius:20px;--radius-lg:28px;--radius-full:9999px;--font:"Nunito", -apple-system, BlinkMacSystemFont, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;overflow:hidden}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent;-webkit-font-smoothing:antialiased;-webkit-user-select:none;user-select:none}.scroll-y{-webkit-overflow-scrolling:touch;scrollbar-width:thin;overflow:hidden auto}.scroll-y::-webkit-scrollbar{width:4px}.scroll-y::-webkit-scrollbar-track{background:0 0}.scroll-y::-webkit-scrollbar-thumb{background:#00000026;border-radius:4px}.app-shell{background:var(--bg);flex-direction:column;max-width:480px;height:100%;margin:0 auto;display:flex;position:relative}.app-header{z-index:10;justify-content:space-between;align-items:center;padding:12px 16px;display:flex;position:relative}.app-body{-webkit-overflow-scrolling:touch;flex:1;padding:0 16px 100px;overflow:hidden auto}.glass-card{background:var(--bg-card);-webkit-backdrop-filter:blur(12px);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid #fff9;padding:20px;transition:transform .2s,box-shadow .2s}.glass-card:active{transform:scale(.97)}.btn{border-radius:var(--radius);font-family:var(--font);cursor:pointer;box-shadow:var(--shadow);-webkit-tap-highlight-color:transparent;border:none;justify-content:center;align-items:center;gap:8px;padding:14px 24px;font-size:16px;font-weight:700;transition:all .2s;display:inline-flex}.btn:active{transform:scale(.95)}.btn-primary{background:linear-gradient(135deg, var(--purple), var(--pink));color:#fff}.btn-primary:hover{box-shadow:var(--shadow-glow)}.btn-success{background:linear-gradient(135deg, var(--green), var(--cyan));color:#fff}.btn-warning{background:linear-gradient(135deg, var(--yellow), var(--orange));color:#fff}.btn-ghost{background:var(--bg-glass);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:var(--text);box-shadow:none;border:1px solid #00000014}.btn-icon{border-radius:var(--radius-full);width:48px;height:48px;padding:0;font-size:20px}.btn-lg{border-radius:var(--radius-lg);padding:18px 32px;font-size:18px}.subject-grid{grid-template-columns:repeat(2,1fr);gap:14px;padding:8px 0;display:grid}.subject-card{border-radius:var(--radius);text-align:center;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:8px;min-height:120px;padding:20px 12px;transition:all .25s;display:flex;position:relative;overflow:hidden}.subject-card:before{content:"";pointer-events:none;background:linear-gradient(135deg,#ffffff4d,#fff0);position:absolute;inset:0}.subject-card:active{transform:scale(.94)}.subject-card .ico{filter:drop-shadow(0 2px 4px #00000026);font-size:36px}.subject-card .name{color:#fff;text-shadow:0 1px 3px #0003;font-size:13px;font-weight:800;line-height:1.2}.subject-card .sc-badge{color:#fff;background:#ffffff4d;border-radius:10px;padding:2px 6px;font-size:8px;font-weight:700;position:absolute;top:8px;right:8px}.progress-bar{background:#00000014;border-radius:4px;width:100%;height:8px;overflow:hidden}.progress-bar-fill{background:linear-gradient(90deg, var(--green), var(--cyan));border-radius:4px;height:100%;transition:width .5s}.quiz-options{flex-direction:column;gap:10px;width:100%;display:flex}.quiz-option{border-radius:var(--radius);background:var(--bg-card);font-size:16px;font-weight:700;font-family:var(--font);cursor:pointer;text-align:left;border:2px solid #0000000f;align-items:center;gap:12px;width:100%;padding:16px 20px;transition:all .2s;display:flex}.quiz-option:active{transform:scale(.97)}.quiz-option.correct{border-color:var(--green);background:#d1fae5;animation:.3s pop}.quiz-option.incorrect{border-color:var(--red);background:#fee2e2;animation:.4s shake}.quiz-option .opt-letter{background:#0000000f;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:14px;font-weight:800;display:flex}.slide-display{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:16px;min-height:200px;padding:32px 20px;display:flex}.slide-big{background:linear-gradient(135deg, var(--purple), var(--pink));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:56px;font-weight:900;line-height:1.2}.slide-cap{color:var(--text);max-width:320px;font-size:18px;font-weight:600;line-height:1.4}.gabby-bubble{border-radius:var(--radius);background:linear-gradient(135deg,#f3e8ff,#fce7f3);align-items:flex-start;gap:12px;margin-bottom:16px;padding:16px;display:flex;position:relative}.gabby-bubble .bubble-text{color:var(--text);flex:1;font-size:15px;font-weight:600;line-height:1.5}.gabby-bubble .speak-btn{cursor:pointer;background:#fff;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:16px;display:flex;box-shadow:0 2px 8px #0000001a}.star-counter{border-radius:var(--radius-full);color:#92400e;background:linear-gradient(135deg,#fef3c7,#fde68a);align-items:center;gap:6px;padding:6px 14px;font-size:16px;font-weight:800;display:flex;box-shadow:0 2px 8px #f59e0b4d}.streak-counter{color:var(--orange);align-items:center;gap:4px;font-size:14px;font-weight:800;display:flex}.badge-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.badge-item{border-radius:var(--radius);text-align:center;flex-direction:column;align-items:center;gap:4px;padding:12px 8px;display:flex}.badge-item.earned{background:linear-gradient(135deg,#fef3c7,#fde68a)}.badge-item.locked{opacity:.5;background:#0000000a}.badge-item .badge-ico{font-size:28px}.badge-item .badge-name{font-size:10px;font-weight:700;line-height:1.2}.store-item{border-radius:var(--radius);background:var(--bg-card);border:2px solid #0000000a;align-items:center;gap:14px;padding:14px 18px;display:flex}.store-item .item-ico{font-size:32px}.store-item .item-info{flex:1}.store-item .item-name{font-size:15px;font-weight:800}.store-item .item-cost{color:var(--text-light);font-size:13px;font-weight:600}.store-item .item-owned{color:var(--green);font-size:12px;font-weight:700}.mic-fab{background:linear-gradient(135deg, var(--purple), var(--pink));color:#fff;cursor:pointer;z-index:100;border:none;border-radius:50%;justify-content:center;align-items:center;width:60px;height:60px;font-size:24px;transition:all .2s;display:flex;position:fixed;bottom:24px;right:24px;box-shadow:0 4px 20px #8b5cf666}.mic-fab:active{transform:scale(.9)}.mic-fab.listening{background:linear-gradient(135deg, var(--red), var(--pink));animation:1.5s infinite pulse-ring}.confetti-layer{pointer-events:none;z-index:1000;position:fixed;inset:0}.tier-pill{border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.5px;align-items:center;gap:4px;padding:4px 12px;font-size:11px;font-weight:800;display:inline-flex}.tier-explorer{color:#1d4ed8;background:#dbeafe}.tier-builder{color:#92400e;background:#fef3c7}.tier-master{color:#7e22ce;background:#f3e8ff}.parent-section{border-bottom:1px solid #0000000f;padding:16px 0}.parent-section h3{color:var(--text-light);text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px;font-size:14px;font-weight:800}.stat-row{justify-content:space-between;align-items:center;padding:8px 0;font-size:14px;display:flex}.stat-value{color:var(--purple);font-weight:800}.back-btn{background:var(--bg-glass);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:var(--radius-full);font-family:var(--font);color:var(--text);cursor:pointer;border:1px solid #0000000f;align-items:center;gap:6px;padding:8px 14px;font-size:14px;font-weight:700;display:flex}.back-btn:active{transform:scale(.95)}@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}@keyframes pulse-ring{0%{box-shadow:0 0 #8b5cf680}70%{box-shadow:0 0 0 15px #8b5cf600}to{box-shadow:0 0 #8b5cf600}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes bounceIn{0%{opacity:0;transform:scale(.3)}50%{transform:scale(1.05)}70%{transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes sparkle{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.2)}}@keyframes blink{0%,90%,to{transform:scaleY(1)}95%{transform:scaleY(.1)}}.animate-fade{animation:.4s forwards fadeIn}.animate-slide-up{animation:.5s forwards slideUp}.animate-bounce{animation:.5s forwards bounceIn}.animate-float{animation:3s ease-in-out infinite float}.review-card{text-align:center;padding:24px}.review-concept{color:var(--text-light);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;font-size:14px;font-weight:700}@media (width>=768px){.app-shell{max-width:600px}.subject-grid{grid-template-columns:repeat(3,1fr)}.badge-grid{grid-template-columns:repeat(4,1fr)}}.lesson-locked{opacity:.5;pointer-events:none;position:relative}.lesson-locked:after{content:"🔒";font-size:24px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.lesson-list{flex-direction:column;gap:10px;display:flex}.lesson-item{border-radius:var(--radius);background:var(--bg-card);cursor:pointer;border:2px solid #0000000a;align-items:center;gap:14px;padding:14px 18px;transition:all .2s;display:flex}.lesson-item:active{transform:scale(.97)}.lesson-item.completed{border-color:var(--green);background:linear-gradient(135deg,#10b98114,#06b6d414)}.lesson-item .lesson-num{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:14px;font-weight:800;display:flex}.lesson-item .lesson-title{flex:1;font-size:15px;font-weight:700}.lesson-item .lesson-status{font-size:18px}.record-btn{border:4px solid var(--red);cursor:pointer;background:#fff;border-radius:50%;justify-content:center;align-items:center;width:80px;height:80px;font-size:32px;transition:all .2s;display:flex}.record-btn.recording{background:var(--red);animation:1.5s infinite pulse-ring}.spinner{border:3px solid #0000001a;border-top-color:var(--purple);border-radius:50%;width:32px;height:32px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:40px 20px;display:flex}.empty-state .empty-ico{font-size:48px}.empty-state .empty-text{color:var(--text-light);font-size:15px;font-weight:600}