@import"https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css";:root{--bg: #f0f9ff;--bg-2: #e0f2fe;--surface: #ffffff;--surface-2: #f8fafc;--surface-3: #f1f5f9;--text: #1e293b;--text-soft: #64748b;--primary: #3b82f6;--primary-strong: #2563eb;--primary-soft: #dbeafe;--accent: #8b5cf6;--accent-strong: #7c3aed;--success: #10b981;--success-strong: #059669;--danger: #ef4444;--danger-strong: #dc2626;--warning: #f59e0b;--ring: rgba(59, 130, 246, .4);--shadow-soft: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-card: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-button: 0 4px 0px rgba(0, 0, 0, .1);--border-radius-lg: 24px;--border-radius-md: 16px;--border-radius-sm: 12px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{min-height:100%}html,body{margin:0;padding:0}body{color:var(--text);font-family:"Baloo 2",Trebuchet MS,sans-serif;background:radial-gradient(circle at 10% 10%,rgba(59,130,246,.1),transparent 40%),radial-gradient(circle at 90% 90%,rgba(139,92,246,.1),transparent 40%),var(--bg);background-attachment:fixed;line-height:1.5}h1,h2,h3,h4,h5,h6{margin:0;font-family:Fredoka,Trebuchet MS,sans-serif;letter-spacing:-.01em;color:var(--text)}p{margin:0}button,input,select{font:inherit}button{border:0;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);user-select:none}button:active:not(:disabled){transform:translateY(2px);filter:brightness(.95)}button:disabled{cursor:not-allowed;opacity:.5;filter:grayscale(.5)}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:4px solid var(--ring);outline-offset:2px}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh;padding:24px 16px 48px}.practice-shell{min-height:100dvh;padding:12px 14px 16px}.page{width:min(1000px,100%);margin:0 auto;display:grid;gap:24px}.glass-card{background:var(--surface);border:2px solid rgba(15,23,42,.05);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-card);overflow:hidden}.panel{padding:24px}.header-row{display:flex;justify-content:space-between;gap:16px;align-items:center}.page-title{font-size:clamp(2rem,6vw,3.5rem);line-height:1.1;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:8px}.page-subtitle{color:var(--text-soft);font-size:1.25rem;font-weight:500}.kid-hero{display:grid;gap:20px;align-items:center;padding:32px;background:linear-gradient(160deg,#fff,#f0f9ff);border:3px solid var(--primary-soft)}.hero-copy{display:grid;gap:14px;align-content:center}.hero-art{display:grid;justify-items:center;align-items:center}.hero-cta{width:fit-content}.hero-note{max-width:34ch;margin-top:-2px}.hero-pills{gap:10px}.primary-button{min-height:60px;border-radius:var(--border-radius-md);padding:12px 24px;background:linear-gradient(180deg,var(--primary),var(--primary-strong));color:#fff;font-weight:700;font-size:1.25rem;box-shadow:0 4px 0 var(--primary-strong),0 8px 15px #2563eb4d;text-shadow:0 2px 4px rgba(0,0,0,.2)}.primary-button:active:not(:disabled){transform:translateY(4px);box-shadow:0 0 0 transparent,0 4px 8px #2563eb33}.secondary-button{min-height:52px;border-radius:var(--border-radius-sm);padding:10px 20px;background:var(--surface-2);color:var(--text);border:2px solid var(--surface-3);font-weight:600;box-shadow:0 3px 0 var(--surface-3)}.secondary-button:active:not(:disabled){transform:translateY(3px);box-shadow:0 0 0 transparent}.ghost-button{min-height:44px;border-radius:var(--border-radius-sm);background:transparent;border:2px dashed var(--text-soft);color:var(--text-soft);font-weight:600;opacity:.7}.ghost-button:hover{opacity:1;background:#00000005}.grid{display:grid;gap:16px}.grid.units{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-auto-rows:220px;align-items:stretch}.grid.exercises{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.tile{border-radius:var(--border-radius-md);border:3px solid var(--primary-soft);background:#fff;padding:20px;min-height:0;height:100%;display:flex;flex-direction:column;gap:10px;justify-content:flex-start;transition:all .2s cubic-bezier(.4,0,.2,1)}.tile:hover{transform:translateY(-4px) scale(1.02);border-color:var(--primary);box-shadow:var(--shadow-card)}.tile.current{border-color:var(--primary);background:linear-gradient(180deg,#fff,#eef5ff);box-shadow:0 0 0 2px #3b82f62e}.tile.done{border-color:#cddbf7;background:linear-gradient(180deg,#fff,#f2f7ff)}.tile.future{border-color:#d9dfef;background:linear-gradient(180deg,#fff,#f7f8fc)}.tile.future .tile-title,.tile.future .tile-subtitle{color:#5f6b86}.tile.locked{background:var(--surface-2);border-color:var(--surface-3);opacity:.6}.app-icon-wrap{width:42px;height:42px;border-radius:999px;display:grid;place-items:center;background:var(--surface-2);border:2px solid var(--surface-3)}.tile-head{display:flex;align-items:center;justify-content:flex-start}.app-icon{font-size:1.15rem;line-height:1;color:var(--primary-strong)}.tile-title{font-size:1.5rem;font-weight:700;font-family:Fredoka,sans-serif;color:var(--primary-strong)}.tile-subtitle{color:var(--text-soft);font-size:1rem;line-height:1.4}.practice-layout{display:grid;width:min(1160px,100%);gap:clamp(12px,2vw,20px);align-items:start;grid-template-columns:minmax(0,1fr)}.problem-card{padding:clamp(16px,2vw,24px);display:grid;gap:clamp(12px,1.8vw,18px);border:4px solid var(--primary-soft);align-content:start}.problem-card.problem-card--compact{gap:clamp(10px,1.3vw,14px)}.problem-prompt{font-size:clamp(1.2rem,3vw,1.95rem);line-height:1.2;font-family:Fredoka,sans-serif;color:var(--text);text-align:center}.attempt-row{display:flex;flex-direction:column;align-items:center;gap:8px;padding:12px 14px;background:var(--surface-2);border-radius:var(--border-radius-md)}.attempt-meta{display:grid;justify-items:center}.practice-visual{display:grid;gap:10px;padding:12px 14px;border-radius:var(--border-radius-md);border:2px solid var(--surface-3);background:linear-gradient(180deg,#fff,#f8fafc)}.practice-data-table{display:grid;grid-template-columns:88px 1fr 58px;border-radius:var(--border-radius-sm);overflow:hidden;border:2px solid var(--surface-3)}.practice-data-head{padding:6px 10px;font-size:.85rem;font-weight:800;color:var(--text-soft);text-transform:uppercase;letter-spacing:.04em;background:var(--surface-2)}.practice-data-row{grid-column:1 / -1;display:grid;grid-template-columns:88px 1fr 58px;gap:12px;align-items:center;padding:8px 10px;border-top:1px solid var(--surface-3);background:#fff}.practice-compare-row{display:grid;grid-template-columns:88px 1fr 58px;gap:8px;align-items:center}.practice-category-label,.practice-bar-label{font-size:.9rem;font-weight:700;color:var(--text-soft)}.practice-tally-cell{min-height:34px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}.practice-tally-dot{width:14px;height:14px;border-radius:999px;border:1px solid rgba(15,23,42,.08)}.practice-empty-mark{font-size:.85rem;color:var(--text-soft);text-transform:uppercase;letter-spacing:.04em}.practice-segment-track{display:grid;gap:2px;min-height:24px;align-items:center}.practice-segment{min-height:18px;border-radius:4px;border:1px solid rgba(148,163,184,.5);background:#e2e8f073}.practice-segment.filled.first{background:linear-gradient(180deg,#60a5fa,#2563eb);border-color:#2563eb66}.practice-segment.filled.second{background:linear-gradient(180deg,#fcd34d,#f59e0b);border-color:#f59e0b66}.practice-segment.filled.red{background:linear-gradient(180deg,#f87171,#ef4444);border-color:#ef444466}.practice-segment.filled.blue{background:linear-gradient(180deg,#60a5fa,#2563eb);border-color:#2563eb66}.practice-segment.filled.green{background:linear-gradient(180deg,#34d399,#10b981);border-color:#10b98166}.practice-bar-value{font-size:.95rem;font-weight:700;text-align:right;color:var(--text)}.practice-ruler{display:grid;gap:10px}.practice-ruler-row{display:grid;grid-template-columns:48px minmax(0,1fr);gap:10px;align-items:center}.practice-ruler-track{position:relative;min-height:40px;border-radius:var(--border-radius-sm);border:2px solid var(--surface-3);background:#fff;overflow:hidden}.practice-ruler-ticks{position:absolute;inset:6px 8px;display:grid;align-items:end;pointer-events:none}.practice-ruler-tick{justify-self:center;width:2px;border-radius:999px;background:#64748b59}.practice-ruler-tick.major{height:24px}.practice-ruler-tick.minor{height:12px}.practice-ruler-bar{position:absolute;left:8px;bottom:6px;height:14px;border-radius:999px;max-width:calc(100% - 16px)}.practice-ruler-bar.first{background:linear-gradient(180deg,#60a5fa,#2563eb)}.practice-ruler-bar.second{background:linear-gradient(180deg,#fcd34d,#f59e0b)}.line-plot-shell{display:grid;gap:8px;border:2px solid var(--surface-3);border-radius:var(--border-radius-sm);background:#fff;padding:10px 12px}.line-plot-columns{display:grid;gap:6px;align-items:end}.line-plot-column{display:grid;gap:4px;justify-items:center}.line-plot-dot{width:12px;height:12px;border-radius:999px;border:1px solid transparent;background:transparent}.line-plot-dot.filled{background:#1e293b;border-color:#0f172a1a}.line-plot-axis{display:grid;gap:6px;border-top:2px solid var(--surface-3);padding-top:8px}.line-plot-axis-label{text-align:center;font-size:.9rem;font-weight:700;color:var(--text-soft)}.base-ten-layout{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.base-ten-column{display:grid;gap:8px}.base-ten-grid{display:flex;flex-wrap:wrap;gap:6px;min-height:30px}.base-ten-piece{border-radius:6px;border:1px solid rgba(59,130,246,.22);background:linear-gradient(180deg,#bfdbfe,#93c5fd)}.base-ten-piece.hundred{width:30px;height:30px}.base-ten-piece.ten{width:26px;height:14px}.base-ten-piece.one{width:12px;height:12px;border-radius:999px}.meter-track{width:100%;height:24px;border-radius:999px;background:var(--surface-3);border:3px solid var(--surface-2);box-shadow:inset 0 2px 4px #0000000d;overflow:hidden}.meter-fill{height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--success),#34d399,#60a5fa);transition:width .5s cubic-bezier(.34,1.56,.64,1);box-shadow:0 0 10px #10b9814d}.feedback-slot{display:grid;place-items:center}.practice-sidebar{display:grid;gap:12px;align-content:start}.practice-avatar-panel{text-align:center}.keypad-answer-panel{min-height:56px;padding:12px 16px}.keypad-answer-value{font-size:clamp(1.35rem,2.8vw,1.7rem);font-weight:800}.keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:100%;max-width:340px;margin:0 auto}.keypad button{min-height:clamp(46px,8vw,56px);border-radius:var(--border-radius-sm);background:#fff;border:2px solid var(--surface-3);font-size:clamp(1.15rem,2.6vw,1.35rem);font-weight:800;color:var(--text);box-shadow:0 3px 0 var(--surface-3);font-family:Fredoka,sans-serif}.keypad button:active{transform:translateY(3px);box-shadow:0 0 0 transparent}.keypad .submit{grid-column:span 3;background:linear-gradient(180deg,var(--success),var(--success-strong));color:#fff;border-color:var(--success-strong);box-shadow:0 3px 0 var(--success-strong);margin-top:4px}.keypad .submit:active{box-shadow:0 0 0 transparent}.keyboard-entry-panel{width:100%;max-width:560px;margin:0 auto;display:grid;gap:10px}.keyboard-answer-panel{padding:14px 16px;display:grid;gap:12px}.keyboard-answer-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px}.keyboard-answer-divider{border-top:1px solid var(--surface-3)}.keyboard-answer-value{font-size:clamp(1.5rem,2.6vw,1.9rem);font-weight:800;min-width:28px;text-align:right}.keyboard-answer-value.is-empty{color:var(--surface-3)}.keyboard-actions-row{display:flex;justify-content:flex-end;align-items:center;gap:12px}.keyboard-actions-row .inline-stack{justify-content:flex-end}.keyboard-action-button{min-height:44px;padding:8px 16px;min-width:88px}.keyboard-submit-button{min-height:44px;padding:10px 18px;min-width:104px;font-size:1rem;box-shadow:0 3px 0 var(--primary-strong),0 6px 12px #2563eb3d}.keyboard-hint{font-size:.84rem;font-weight:700}.keyboard-submit-button:active:not(:disabled){transform:translateY(3px);box-shadow:0 0 0 transparent,0 2px 6px #2563eb2e}.money-combo-panel{width:min(520px,100%);margin:0 auto;gap:10px}.money-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;padding:10px 12px;border:2px solid var(--surface-3);border-radius:var(--border-radius-sm);background:#fff}.result-banner{border-radius:var(--border-radius-md);padding:12px 16px;font-weight:700;font-size:1rem;text-align:center;animation:slide-up .3s ease-out}@keyframes slide-up{0%{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}.result-banner.correct{background:#ecfdf5;border:3px solid var(--success);color:var(--success-strong)}.result-banner.wrong{background:#fef2f2;border:3px solid var(--danger);color:var(--danger-strong)}.attempt-dots{display:flex;gap:10px}.attempt-dot{width:24px;height:24px;border-radius:999px;background:var(--surface-3);border:3px solid var(--bg-2)}.attempt-dot.used{background:var(--danger);border-color:var(--danger-strong)}.attempt-dot.success{background:var(--success);border-color:var(--success-strong)}.number-line-shell{width:100%;padding:14px 16px;border-radius:var(--border-radius-md);background:var(--surface-2);border:2px solid var(--surface-3)}.number-line-track{position:relative;height:80px;margin:0 12px}.number-line-axis{position:absolute;left:0;right:0;top:42px;height:5px;border-radius:999px;background:var(--primary-soft)}.number-line-tick{position:absolute;transform:translate(-50%);display:grid;place-items:center}.number-line-tick.major{top:29px;width:3px;height:26px;border-radius:999px;background:var(--primary)}.number-line-tick.minor{top:36px;width:2px;height:15px;border-radius:999px;background:var(--text-soft);opacity:.3}.number-line-label{position:absolute;left:50%;top:-22px;transform:translate(-50%);font-size:.9rem;font-weight:800;color:var(--primary-strong);font-family:Fredoka,sans-serif}.number-line-point{position:absolute;top:44px;transform:translate(-50%,-50%);width:22px;height:22px;border-radius:999px;background:var(--warning);border:3px solid white;box-shadow:0 4px 8px #0003;z-index:2}.number-line-selection{position:absolute;top:44px;transform:translate(-50%,-50%);width:30px;height:30px;border-radius:999px;border:3px solid var(--accent);background:#8b5cf61a;z-index:1;animation:pulse 1.5s infinite}@keyframes pulse{0%{transform:translate(-50%,-50%) scale(1);opacity:1}50%{transform:translate(-50%,-50%) scale(1.1);opacity:.7}to{transform:translate(-50%,-50%) scale(1);opacity:1}}.spino-wrap{width:clamp(200px,36vw,360px);aspect-ratio:3 / 2;border-radius:var(--border-radius-lg);background:#fff;border:4px solid var(--primary-soft);display:grid;place-items:center;box-shadow:var(--shadow-card);transition:all .3s cubic-bezier(.34,1.56,.64,1);padding:10px;overflow:hidden}.spino-wrap img{width:100%;height:100%;object-fit:contain}.spino-wrap.spino-header-avatar{width:clamp(280px,52vw,620px);background:transparent;border:0;box-shadow:none;border-radius:0;padding:0;overflow:visible}.spino-wrap.spino-header-avatar img{filter:drop-shadow(0 14px 24px rgba(37,99,235,.22))}.spino-wrap.spino-practice-avatar{width:min(100%,340px);background:transparent;border:0;box-shadow:none;border-radius:0;padding:0;aspect-ratio:auto;overflow:visible}.spino-wrap.spino-practice-avatar img{width:100%;height:auto}@keyframes spino-bounce{0%,to{transform:translateY(0) rotate(0)}25%{transform:translateY(-15px) rotate(-5deg)}75%{transform:translateY(-15px) rotate(5deg)}}@keyframes spino-shake{0%,to{transform:translate(0)}25%{transform:translate(-8px)}75%{transform:translate(8px)}}.spino-wrap.happy{border-color:var(--success);transform:scale(1.05);animation:spino-bounce .6s ease infinite}.spino-wrap.celebrate{border-color:var(--warning);transform:scale(1.05);animation:spino-bounce .65s ease infinite}.spino-wrap.sad{border-color:var(--danger-strong);animation:spino-shake .4s ease}.inline-stack{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.pill{padding:6px 14px;border-radius:999px;background:var(--primary-soft);color:var(--primary-strong);font-size:.9rem;font-weight:700;border:2px solid rgba(59,130,246,.1)}.table-list{display:grid;gap:12px}.table-row{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:12px;border-radius:var(--border-radius-md);background:#fff;border:2px solid var(--surface-3);padding:12px 16px;align-items:center}.modal-backdrop{position:fixed;inset:0;display:grid;place-items:center;background:#0f172a66;backdrop-filter:blur(4px);z-index:100;padding:16px}.modal-card{width:min(480px,100%);border-radius:var(--border-radius-lg);background:#fff;border:4px solid var(--primary-soft);box-shadow:0 25px 50px -12px #00000040;padding:32px;display:grid;gap:20px}.form-grid{display:grid;gap:16px}.form-grid label{display:grid;gap:8px;color:var(--text-soft);font-weight:700}input[type=number],input[type=password],input[type=text],select{min-height:52px;border-radius:var(--border-radius-sm);border:3px solid var(--surface-3);background:var(--surface-2);padding:12px 16px;font-size:1rem;transition:all .2s}input:focus,select:focus{border-color:var(--primary);background:#fff;outline:none}.parent-link{text-align:center;margin-top:16px}small.note{color:var(--text-soft);font-size:.9rem;font-weight:500}@media(min-width:840px){.kid-hero{grid-template-columns:minmax(280px,1fr) minmax(0,1.45fr);text-align:left}.practice-layout:not(.practice-layout--solo){grid-template-columns:minmax(0,1fr) 300px;align-items:start}.attempt-row{flex-direction:row;justify-content:space-between}.problem-prompt{text-align:left}}@media(min-width:980px){.keypad{grid-template-columns:repeat(4,minmax(0,1fr));max-width:520px}.keypad .submit{grid-column:span 4}}@media(max-width:839px){.hero-cta{width:100%}.header-row{align-items:flex-start}.keyboard-actions-row .inline-stack{width:100%;justify-content:stretch}.keyboard-actions-row .inline-stack button{flex:1}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}