:root{color:#26323f;background:#f6fbff;font-family:Inter,ui-rounded,Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;--blue: #3278d8;--blue-dark: #1d4f91;--green: #3fa66b;--green-soft: #dff7e9;--red: #d65353;--red-soft: #ffe4e4;--yellow: #f7d95c;--coral: #ff9876;--ink: #26323f;--muted: #657385;--line: #d8e3ef;--panel: #ffffff;--shadow: 0 18px 45px rgba(50, 120, 216, .12)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible{outline:3px solid rgba(50,120,216,.45);outline-offset:3px}.app-shell{width:min(1180px,calc(100% - 28px));margin:0 auto;padding:24px 0 42px}.topbar{align-items:center;display:flex;gap:16px;justify-content:space-between;margin-bottom:18px}.eyebrow{color:var(--blue-dark);font-size:.82rem;font-weight:800;letter-spacing:0;margin:0 0 2px;text-transform:uppercase}h1,h2,p{margin-top:0}h1{color:var(--ink);font-size:clamp(2rem,7vw,4.6rem);line-height:.95;margin-bottom:0}.saved-pill{align-items:center;background:#fff6c5;border:2px solid #f0c93c;border-radius:999px;color:#67540d;display:flex;font-weight:800;gap:8px;min-height:42px;padding:10px 14px;white-space:nowrap}.mode-tabs{background:#e9f3ff;border:1px solid #cfe1f7;border-radius:8px;display:grid;gap:6px;grid-template-columns:repeat(4,1fr);margin-bottom:16px;padding:6px}.mode-tab{align-items:center;background:transparent;border:0;border-radius:6px;color:var(--blue-dark);display:flex;font-weight:800;gap:8px;justify-content:center;min-height:46px;padding:8px 10px}.mode-tab.active{background:#fff;box-shadow:0 7px 18px #1d4f911f;color:var(--ink)}.mode-panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);padding:18px}.panel-header{align-items:center;display:flex;gap:12px;margin-bottom:16px}.panel-icon{align-items:center;background:var(--yellow);border:2px solid #e9bf26;border-radius:8px;color:#5d4a06;display:grid;flex:0 0 52px;height:52px;place-items:center}.panel-header h2{font-size:clamp(1.35rem,4vw,2rem);line-height:1.05;margin-bottom:4px}.panel-header p{color:var(--muted);line-height:1.45;margin-bottom:0}.stats-strip{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));margin-bottom:16px}.stat-item{background:#f8fbff;border:1px solid var(--line);border-radius:8px;min-height:74px;padding:12px}.stat-item span{color:var(--muted);display:block;font-size:.84rem;font-weight:800;margin-bottom:4px}.stat-item strong{color:var(--ink);display:block;font-size:1.6rem}.toolbar{align-items:center;display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}.toolbar.centered{justify-content:center;margin:0}.primary-button,.secondary-button{align-items:center;border-radius:8px;display:inline-flex;font-weight:900;gap:8px;justify-content:center;min-height:44px;padding:10px 14px}.primary-button{background:var(--blue);border:2px solid var(--blue-dark);color:#fff}.secondary-button{background:#fff;border:2px solid var(--line);color:var(--ink)}.danger-button{border-color:#efb7b7;color:#9e3434}.primary-button.compact{min-height:40px;padding:8px 12px}.feedback-banner{align-items:center;border:2px solid;border-radius:8px;display:flex;flex-wrap:wrap;gap:8px 12px;margin-bottom:14px;padding:12px 14px}.feedback-banner strong{font-size:1.05rem}.feedback-banner span{font-weight:800}.feedback-banner.success{background:var(--green-soft);border-color:var(--green);color:#226b43}.feedback-banner.needs-work{background:#fff0d7;border-color:#f0ad4e;color:#7a4b08}.grid-scroll{overflow-x:auto;padding-bottom:8px}.multiplication-grid{border-collapse:separate;border-spacing:6px;min-width:860px;width:100%}.multiplication-grid th,.multiplication-grid td{border-radius:8px;height:52px;min-width:58px;text-align:center}.multiplication-grid th{background:#e7f3ff;color:var(--blue-dark);font-weight:900;position:sticky;z-index:1}.multiplication-grid thead th{top:0;z-index:2}.multiplication-grid tbody th{left:0}.multiplication-grid .corner-cell{background:var(--coral);color:#4f2617;left:0;z-index:3}.multiplication-grid td{background:#f8fbff;border:2px solid #dce8f5}.multiplication-grid td.correct,.question-row.correct,.missed-card.correct{background:var(--green-soft);border-color:var(--green)}.multiplication-grid td.incorrect,.question-row.incorrect,.missed-card.incorrect{background:var(--red-soft);border-color:var(--red)}.multiplication-grid input,.question-row input,.missed-card input,.big-answer{background:#fff;border:2px solid #c9d8e7;border-radius:8px;color:var(--ink);font-weight:900;min-height:40px;outline:none;text-align:center;width:100%}.multiplication-grid input:focus,.question-row input:focus,.missed-card input:focus,.big-answer:focus{border-color:var(--blue);box-shadow:0 0 0 4px #3278d829}.family-picker{display:grid;gap:8px;grid-template-columns:repeat(6,1fr);margin-bottom:16px}.family-chip{background:#fff;border:2px solid var(--line);border-radius:8px;color:var(--blue-dark);font-weight:900;min-height:44px;padding:8px}.family-chip.active{background:var(--coral);border-color:#e36c48;color:#411d11}.question-list{display:grid;gap:10px;grid-template-columns:repeat(2,1fr);margin-bottom:16px}.question-row{align-items:center;background:#f8fbff;border:2px solid var(--line);border-radius:8px;display:grid;gap:12px;grid-template-columns:1fr minmax(82px,130px);min-height:62px;padding:10px 12px}.question-row span{font-size:1.15rem;font-weight:900}.answer-hint{background:#fff;border:1px solid #f0ad4e;border-radius:6px;color:#7a4b08;font-weight:900;grid-column:1 / -1;padding:6px 8px}.question-row.empty{background:#f8fbff}.random-card{align-items:center;background:#fff9dd;border:2px solid #efd35c;border-radius:8px;display:grid;gap:16px;justify-items:center;padding:24px}.big-question{color:var(--ink);font-size:clamp(3.5rem,18vw,8rem);font-weight:1000;line-height:1}.big-answer{font-size:2rem;max-width:220px;min-height:64px}.result-message{font-size:1.25rem;font-weight:900;margin:0;text-align:center}.correct-text{color:#226b43}.incorrect-text{color:#a83d3d}.empty-state{align-items:center;background:#ecfff4;border:2px solid #b9e7cb;border-radius:8px;color:#226b43;display:grid;gap:8px;justify-items:center;min-height:220px;padding:26px;text-align:center}.empty-state h2{margin-bottom:0}.empty-state p{color:#337650;margin-bottom:0}.missed-list{display:grid;gap:10px}.missed-card{align-items:center;background:#f8fbff;border:2px solid var(--line);border-radius:8px;display:grid;gap:12px;grid-template-columns:minmax(120px,1fr) minmax(84px,130px) auto;padding:12px}.fact-label{display:block;font-size:1.2rem;font-weight:900}.miss-count{color:var(--muted);display:block;font-size:.86rem;font-weight:800;margin-top:2px}@media(max-width:760px){.app-shell{width:min(100% - 18px,720px);padding-top:14px}.topbar{align-items:flex-start;flex-direction:column}.mode-tabs{grid-template-columns:repeat(2,1fr)}.mode-panel{padding:14px}.stats-strip,.question-list{grid-template-columns:1fr}.family-picker{grid-template-columns:repeat(3,1fr)}.missed-card{grid-template-columns:1fr}.missed-card .primary-button{width:100%}}@media(max-width:440px){.mode-tab{flex-direction:column;gap:3px}.panel-header{align-items:flex-start}.toolbar>*{width:100%}.family-picker{grid-template-columns:repeat(2,1fr)}.question-row{grid-template-columns:1fr}}