.app-input{padding:.6rem .8rem;font-size:1rem;width:200px;border:1px solid #ddd;border-radius:4px}:root{--bg:#f7f7fb;--card:#ffffff;--accent:#2b6cb0;--bad:#e53e3e;--ok:#38a169}*{box-sizing:border-box}body{font-family:Inter,Segoe UI,Arial,Helvetica,sans-serif;background:var(--bg);margin:0;padding:1rem}.expression,.app-input,input,.countdown,math,.stat-value,.review-list li{font-family:Noto Sans,sans-serif}.app{max-width:1240px;margin:0 auto;background:transparent}header{margin-bottom:1rem}.center{text-align:center;padding:2rem;background:var(--card);border-radius:8px}.big{background:var(--accent);color:#fff;border:none;padding:.6rem 1rem;border-radius:6px;cursor:pointer}.big.secondary{background:transparent;color:var(--accent);border:2px solid rgba(43,108,176,.12);box-shadow:none}.top-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.score-counter{display:flex;flex-direction:column;align-items:center;line-height:1}.score-counter__label{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--muted,#64748b)}.score-counter__value{font-size:3rem;font-weight:800;color:var(--ok)}.score-counter__value--bump{animation:score-bump .35s ease-out}.score-timer{font-size:1.1rem;font-weight:600;color:var(--text,#1e293b)}.lives{display:flex;gap:.35rem;align-items:center}.life-icon{font-size:1.3rem;font-weight:900;line-height:1;transition:color .2s}.life-icon--remaining{color:var(--muted,#94a3b8)}.life-icon--used{color:#ef4444}.mistake-panel{display:flex;flex-direction:column;align-items:center;gap:1.5rem;padding:2rem 1.5rem;background:var(--card,#fff);border-radius:1rem;box-shadow:0 8px 32px #0000001f;max-width:400px;margin:1rem auto;text-align:center}.mistake-header{display:flex;align-items:center;gap:.5rem;font-size:1.5rem;font-weight:800;color:#ef4444}.mistake-answers{display:flex;flex-direction:column;gap:.75rem;width:100%}.mistake-answer{display:flex;flex-direction:column;align-items:center;padding:.75rem 1rem;border-radius:.6rem;gap:.2rem}.mistake-answer--wrong{background:#fef2f2;border:2px solid #fca5a5}.mistake-answer--correct{background:#f0fdf4;border:2px solid #86efac}.mistake-answer__label{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--muted,#64748b)}.mistake-answer__value{font-size:1.8rem;font-weight:800;word-break:break-all}.mistake-answer--wrong .mistake-answer__value{color:#ef4444}.mistake-answer--correct .mistake-answer__value{color:#16a34a}@keyframes score-bump{0%{transform:scale(1)}40%{transform:scale(1.45)}70%{transform:scale(.95)}to{transform:scale(1)}}.question{display:block;background:var(--card);padding:2rem;border-radius:8px;text-align:left;position:relative}.question-centered{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.85rem}.einmaleins-row{flex-direction:row}.expression{font-size:2rem;font-weight:700}input[type=number],.math-input{padding:.6rem .8rem;font-size:1.5rem;width:120px;text-align:center}.countdown{font-size:6rem;font-weight:700;color:var(--accent);animation:pulse 1s infinite}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.2)}to{transform:scale(1)}}.tick-inline{position:absolute;right:1.25rem;top:50%;transform:translateY(-50%);pointer-events:none}.tick-svg{width:52px;height:52px}.tick-svg--small{width:1.6em;height:1.1em;flex-shrink:0}.tick-circle{fill:none;stroke:#22c55e;stroke-width:3}.tick-check{fill:none;stroke:#22c55e;stroke-width:5;stroke-linecap:round;stroke-linejoin:round}.controls{display:flex;align-items:center;gap:1rem;margin-top:1rem}.summary{background:var(--card);padding:1.5rem;border-radius:8px;margin-bottom:1rem}.result-score-hero{display:flex;flex-direction:column;align-items:center;margin-bottom:.75rem}.result-score-number{font-size:5rem;font-weight:900;line-height:1;color:var(--ok);font-family:Noto Sans,sans-serif}.result-score-label{font-size:1rem;font-weight:600;color:#555;text-transform:uppercase;letter-spacing:.06em;margin-top:.15rem}.result-meta{display:flex;gap:2rem;justify-content:center;font-size:.95rem;color:#555;margin-bottom:.5rem}.final{font-weight:700;margin-top:.5rem}.performance{margin:1.5rem 0}.performance-bar{height:24px;background:linear-gradient(to right,var(--ok),#ffd700,var(--bad));border-radius:12px;position:relative;overflow:hidden}.performance-bar--score{background:linear-gradient(to right,var(--bad),#ffd700,var(--ok))}.performance-marker{position:absolute;width:4px;height:100%;background:#000;box-shadow:1px 0 1px #fffc,-1px 0 1px #fffc;top:0;transform:translate(-50%)}.performance-labels{display:flex;justify-content:space-between;align-items:flex-start;font-size:.85rem;color:#666;margin-top:.25rem}.performance-label{display:flex;flex-direction:column;gap:.1rem;line-height:1.25}.performance-label-left{text-align:left;align-items:flex-start}.performance-label-center{text-align:center;align-items:center;flex:1}.performance-label-right{text-align:right;align-items:flex-end}.performance-comment{text-align:center;margin-top:1rem;font-size:1.1rem;font-weight:500}.review-container{display:flex;gap:1.5rem;margin-top:1rem}.review-column{flex:1;background:var(--card);padding:1.5rem;border-radius:8px;max-height:400px;overflow:auto}.review-column h4{margin-top:0;margin-bottom:1rem;color:#444}.review-list{list-style:none;padding:0;margin:0}.review-list li{padding:.5rem;border-bottom:1px solid rgba(0,0,0,.05);font-size:.95rem;cursor:pointer}.review-list li:last-child{border-bottom:none}.review-list.ok li{color:var(--ok)}.review-list.bad li{color:var(--bad)}.schriftlich-review-detail{margin-top:1.5rem;background:var(--card);padding:1.5rem;border-radius:8px}.toggle-group{display:inline-flex;border-radius:999px;background:#edf2f7;padding:2px}.toggle-btn{border:none;background:transparent;padding:.25rem .75rem;border-radius:999px;font-size:.9rem;cursor:pointer;color:#4a5568}.toggle-btn.active{background:#fff;color:var(--accent);box-shadow:0 0 0 1px #2b6cb073}.digit-input.wrong{color:#c22;background-color:#e53e3e14}.digit-input.missing{background-color:#e53e3e14}.digit-input.blue.wrong{color:#c22}.small{color:#333;opacity:.8}.lobby{max-width:1160px;margin:2rem auto;text-align:center}.mode-select{display:flex;flex-direction:column;gap:1rem;align-items:center}.create-room,.join-room{margin-top:1rem;display:flex;flex-direction:column;gap:.5rem;align-items:center}.players-list{background:var(--card);padding:1rem;border-radius:8px;margin:1rem 0}.player-row{display:flex;align-items:center;gap:1rem;padding:.5rem;border-bottom:1px solid rgba(0,0,0,.05)}.player-row:last-child{border-bottom:none}.progress-bar{flex:1;height:8px;background:#eee;border-radius:4px;overflow:hidden}.progress-bar .progress{height:100%;background:var(--accent);transition:width .3s ease}.error{color:var(--bad);margin:1rem 0}.actions{display:flex;gap:1rem;margin-top:1rem;flex-wrap:wrap}.leaderboard-qualify-box{background:var(--card);border:2px solid #ffd700;border-radius:8px;padding:1.5rem;margin:1rem 0;text-align:center}.leaderboard-qualify-box--submitted{border-color:var(--ok)}.leaderboard-qualify-title{font-size:1.5rem;font-weight:800;margin-bottom:.5rem}.leaderboard-category-tabs{display:flex;flex-wrap:wrap;gap:.35rem;background:#edf2f7;border-radius:8px;padding:4px;margin-bottom:1.5rem;width:fit-content}.leaderboard-table-wrap{background:var(--card);border-radius:8px;overflow:hidden;box-shadow:0 2px 8px #00000012}.leaderboard-table{width:100%;border-collapse:collapse;font-size:1rem}.leaderboard-table th{background:var(--accent);color:#fff;padding:.75rem 1rem;text-align:left;font-weight:600;white-space:nowrap}.leaderboard-table td{padding:.65rem 1rem;border-bottom:1px solid rgba(0,0,0,.05)}.leaderboard-table tbody tr:last-child td{border-bottom:none}.leaderboard-table tbody tr:hover td{background:#2b6cb00a}.leaderboard-podium td{font-weight:600}.leaderboard-rank{width:3rem;font-size:1.1rem}.leaderboard-score{color:var(--ok);font-weight:700}.leaderboard-wrong{color:var(--bad)}.leaderboard-date{color:#888;font-size:.85rem;white-space:nowrap}.leaderboard-new-entry td{background:#ffd7002e!important;font-weight:700}.inline-leaderboard{margin-top:1.5rem}.inline-leaderboard h3{margin-bottom:.75rem}.primfaktor-demo{margin:1rem auto;max-width:420px;background:var(--card);border:1px solid #e6e9ef;border-radius:10px;padding:1rem 1.25rem;display:flex;flex-direction:column;gap:.85rem}.primfaktor-demo__display{display:flex;align-items:center;gap:.75rem}.primfaktor-demo__draft{display:inline-flex;align-items:center;font-size:1rem;padding:.15rem .2rem;color:#222;min-width:1ch}.primfaktor-demo__cursor{display:inline-block;width:2px;height:1.1em;background:var(--accent);margin-left:1px;vertical-align:text-bottom;animation:cursor-blink 1s step-end infinite}@keyframes cursor-blink{0%,to{opacity:1}50%{opacity:0}}.primfaktor-demo__keys{display:flex;gap:.5rem;justify-content:center;flex-wrap:wrap}.primfaktor-demo__key{display:inline-flex;align-items:center;justify-content:center;padding:.3rem .7rem;border-radius:6px;border:1.5px solid #d1d5db;background:#f9fafb;font-size:.9rem;font-weight:600;color:#374151;min-width:2.5rem;transition:background .1s,border-color .1s,color .1s,transform .08s;-webkit-user-select:none;user-select:none}.primfaktor-demo__key--active{background:var(--accent);border-color:var(--accent);color:#fff;transform:scale(.93)}.settings-box{background:var(--card);padding:1.25rem;border-radius:8px;margin:1.5rem auto;max-width:500px;box-shadow:0 2px 8px #00000014}.settings-box h3{margin-top:0;margin-bottom:1rem;font-size:1.1rem;color:#333}.checkbox-label{display:flex;align-items:center;gap:.75rem;padding:.5rem 0;cursor:pointer;-webkit-user-select:none;user-select:none}.checkbox-label input[type=checkbox]{width:18px;height:18px;cursor:pointer}.checkbox-label span{font-size:.95rem;color:#444}.checkbox-label:hover span{color:var(--accent)}.category-selection{margin:1.5rem auto;max-width:600px}.category-selection-wide{max-width:100%;margin:0}.category-selection-minimal{margin-top:1rem}.category-selection h3{margin-bottom:1rem;font-size:1.1rem;color:#333}.category-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.category-buttons-grid{display:grid;grid-template-columns:repeat(auto-fit,220px);justify-content:start;align-items:stretch}.category-btn{padding:.75rem 1.5rem;border:2px solid #ddd;background:#fff;border-radius:8px;cursor:pointer;font-size:.95rem;font-weight:500;color:#444;transition:all .2s ease;min-width:120px;min-height:0;box-shadow:0 2px 8px #0000000a}.category-btn span{margin-top:0;font-size:1.08rem;font-weight:600}.category-btn:hover{border-color:var(--accent);color:var(--accent);background:#f0f6ff}.category-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.category-card{width:220px;min-height:88px;padding:1rem 1.25rem;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.category-card-title{display:block}.category-card-static{cursor:default;color:#444;background:#fff}.category-card-static:hover{border-color:#ddd;color:#444;background:#fff}.category-subactions{display:flex;justify-content:center;width:100%;gap:.5rem;margin-top:.85rem}.category-subbtn{width:3rem;height:2.1rem;padding:0 .7rem;border-radius:8px;border:2px solid rgba(43,108,176,.14);background:#fff;color:var(--accent);box-shadow:0 2px 8px #0000000a;font-size:.95rem;font-weight:700;cursor:pointer;transition:all .2s ease}.category-subbtn:hover{border-color:var(--accent);background:#f0f6ff}.category-grade-groups{display:flex;flex-direction:column;gap:1.25rem}.category-grade-group{background:#ffffffb3;border:1px solid rgba(43,108,176,.08);border-radius:14px;padding:1rem;text-align:left}.category-grade-header{font-size:1rem;font-weight:700;color:var(--accent);margin-bottom:.9rem}.menu-grid{display:grid;grid-template-columns:1fr;grid-template-rows:auto auto;gap:1.5rem;max-width:1120px;margin:2rem auto}.menu-row{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.tile{background:var(--card);border-radius:10px;padding:1.25rem;display:flex;flex-direction:column;justify-content:space-between;min-height:180px;box-shadow:0 6px 18px #1e28320a}.tile.big{min-height:340px;display:flex}.tile .title{font-size:1.25rem;font-weight:700;color:var(--accent);margin-bottom:.5rem}.tile .subtitle{color:#666;font-size:.95rem;margin-bottom:1rem}.tile .tile-body{flex:1}.tile .tile-actions{display:flex;flex-direction:column;gap:.5rem;margin-top:.75rem}.tile input[type=text]{padding:.6rem;border-radius:6px;border:1px solid #e6e9ef}.tile .hint{font-size:.85rem;color:#777;margin-top:.25rem}@media(max-width:900px){.menu-grid{grid-template-columns:1fr;grid-template-rows:auto auto;padding:0 1rem}.menu-row{grid-template-columns:1fr;gap:1rem}}.username-page{max-width:600px;margin:3rem auto;text-align:center}.username-page .room-id{background:#2a2a2a;padding:.3em .6em;border-radius:4px;font-size:1.1em}.username-input{margin:2rem 0;display:flex;flex-direction:column;gap:1rem;align-items:center}.username-input input{width:100%;max-width:300px}.username-input input:disabled{opacity:.6;cursor:not-allowed}button:disabled{opacity:.6;cursor:not-allowed}.admin-view{background:var(--bg);padding:1rem}.admin-view header{margin-bottom:1.5rem}.admin-view header h2{margin:0 0 .5rem;display:flex;align-items:center;flex-wrap:wrap}.copy-btn{background:transparent;border:1px solid #eee;border-radius:4px;cursor:pointer;font-size:.85rem;padding:2px 6px;margin-left:8px}.copy-btn:hover{background:#fafafa;border-color:#e6e6e6}.admin-settings-summary{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;margin:0 0 1rem;color:#444}.admin-settings-summary .settings-pill{background:#2b6cb014;color:var(--accent);padding:.15rem .6rem;border-radius:999px;font-size:.85rem;font-weight:500}.room-title h2{margin:0 0 .4rem;font-size:1.35rem;color:#333}.join-info{display:flex;flex-direction:column;align-items:center;gap:.5rem;margin-bottom:1rem}.big-room-id{font-size:1.6rem;font-weight:700;letter-spacing:.06em;background:none}.join-actions{display:flex;gap:.6rem}.copy-btn.copy-large{padding:.6rem .9rem;font-size:.95rem;border-radius:8px}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;padding:4px;margin-left:.5rem;border-radius:6px;border:none;background:transparent;cursor:pointer;transition:background .12s ease,transform .08s ease}.icon-btn svg{display:block}.icon-btn:hover{background:#2b6cb00f}.icon-btn:active{transform:translateY(1px)}.icon-btn:focus{outline:2px solid rgba(43,108,176,.18);outline-offset:2px}.factor-input{display:flex;align-items:center;flex-wrap:wrap;gap:.4rem;padding:.3rem .4rem;min-height:40px;background:#fff;border:1px solid #e6e9ef;border-radius:8px;cursor:text;flex:1;min-width:0}.factor-token{display:inline-flex;align-items:center;justify-content:center;height:30px;padding:0 .65rem;border-radius:6px;border:1px solid rgba(43,108,176,.18);background:#2b6cb00f;color:#2b6cb0;font-weight:700;font-size:1.05rem;transition:background .12s ease,border-color .12s ease,color .12s ease,transform 80ms ease;cursor:pointer}.factor-token:hover{background:#e53e3e0f;border-color:#e53e3e38;color:#c53030}.factor-token:focus{outline:2px solid rgba(229,62,62,.12);outline-offset:2px}.factor-draft{border:none;outline:none;min-width:60px;flex:1;font-size:1rem;padding:.3rem .2rem}.factor-draft:focus:after{content:"";display:inline-block;width:2px;height:1.2em;background:var(--accent);margin-left:1px;vertical-align:middle;animation:cursor-blink 1s step-end infinite}.factor-sep{color:#6b7280;font-size:1.2rem;line-height:1;-webkit-user-select:none;user-select:none}.factor-row{display:flex;align-items:center;gap:.75rem}.instruction{font-size:.95rem;color:#444;margin-bottom:1.2rem}.join-instructions{font-size:.9rem;color:#555}.join-url a{color:var(--accent);font-weight:600;text-decoration:none;word-break:break-all}.join-url a:hover{text-decoration:underline}.join-url{display:flex;align-items:center;gap:.5rem;justify-content:space-between}.join-instructions{margin-top:.75rem;color:#555}.join-primary-action{margin-top:1rem}.join-primary-action .big{width:100%}.copy-toast{position:fixed;top:1rem;right:1rem;background:#000c;color:#fff;padding:.45rem .75rem;border-radius:6px;font-size:.85rem;z-index:1200;box-shadow:0 6px 18px #0000001f}.admin-actions{margin:0 0 1.5rem;min-height:48px;display:flex;gap:.75rem;align-items:center}.admin-stats{margin:0 0 1.5rem;padding:1.25rem;background:linear-gradient(135deg,#f8f9fa,#e9ecef);border-radius:12px;border:1px solid #dee2e6}.admin-stats h3{margin-top:0;margin-bottom:1rem;font-size:1.1rem;color:#495057;display:flex;align-items:center;gap:.5rem}.admin-content{width:100%;margin:0;padding:0}.stats-grid{display:flex;gap:1rem;align-items:stretch;justify-content:center}.stats-grid{flex-wrap:wrap}.stat-card{margin:.25rem}.card-header{position:relative;z-index:2}.card{overflow:visible}.stat-card{flex:0 0 auto}.stat-card{background:#fff;padding:1rem;border-radius:8px;border:1px solid #dee2e6}.stat-card .stat-label{font-size:.85rem;color:#6c757d;margin-bottom:.25rem}.stat-card .stat-value{font-size:1.75rem;font-weight:700}.stat-card .stat-value.blue{color:#2563eb}.stat-card .stat-value.green{color:#16a34a}.stat-card .stat-value.red{color:#dc2626}.stat-card .stat-suffix{font-size:1rem;font-weight:400}.stat-card .stat-unit{font-size:.8rem;color:#6c757d;margin-top:.25rem}.admin-view{display:flex;justify-content:center;padding:1rem 0;width:100%}.admin-inner{display:flex;flex-direction:column;gap:1rem;align-items:stretch;width:100%;max-width:1280px;padding:0 1rem}.admin-header{display:flex;align-items:center;justify-content:space-between;gap:1rem}.admin-header-left{display:flex;align-items:center;gap:1rem}.admin-header-right{display:flex;align-items:center;gap:.5rem}.admin-layout{display:grid;grid-template-columns:340px 1fr;gap:1rem}.admin-sidebar{display:flex;flex-direction:column;gap:1rem}.card{background:var(--card);border-radius:10px;box-shadow:0 6px 18px #1e28320f;border:1px solid #e6e9ef}.card-header{padding:.9rem 1rem .2rem;border-bottom:1px solid #f0f2f6}.card-header h3{margin:0;font-size:1.05rem;color:#334155}.card-header .big-room-id{display:flex;align-items:center}.card-header .big-room-id .room-id{margin-left:0;font-size:1.35rem}.card-body{padding:.75rem 1rem 1rem}.players-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1rem;align-content:start}.player-card{background:var(--card);border-radius:8px;padding:1rem;display:flex;flex-direction:column;height:500px}.player-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem;min-height:32px}.player-card h3{margin:0;font-size:1.1rem}.player-card .admin-badge{font-size:.85rem;color:#666;margin-left:.5rem}.player-card .progress-percent{font-size:1.25rem;font-weight:700}.player-card .progress-percent.complete{color:#16a34a}.player-card .progress-percent.active{color:#2563eb}.player-card .progress-wrapper{margin-bottom:.75rem;min-height:24px}.player-problems{flex:1;max-height:200px;min-height:200px;overflow:auto;border:1px solid #dee2e6;border-radius:6px;padding:.5rem;background:#fff;margin-bottom:.75rem}.problem-entry{display:flex;justify-content:space-between;padding:.4rem .6rem;margin-bottom:.25rem;border-radius:4px;font-size:.9rem}.player-score{margin-top:auto;padding:.75rem;background:#f8f9fa;border-radius:6px;min-height:80px}.player-score .score-title{font-size:1rem;font-weight:700;color:#16a34a;margin-bottom:.5rem}.player-score .score-detail{font-size:.95rem;color:#495057}.player-score .score-progress{margin-top:.5rem}.room-id{font-size:1.25rem;background:#fff;display:inline-block}.waiting-message{font-size:1.05rem;color:#444}.player-name{font-size:.95rem;color:#333;margin-top:.25rem}.problem-entry{padding:.3rem;border-bottom:1px solid rgba(0,0,0,.05);display:flex;justify-content:space-between}.problem-entry.correct{color:var(--ok)}.problem-entry.incorrect{color:var(--bad)}footer{margin-top:1.5rem;text-align:center;color:#666}.logo-header{text-align:center;margin-bottom:2rem}.logo-container{display:inline-flex;align-items:center;gap:1rem}.logo-text{margin:0;font-size:2.5rem;font-weight:650;letter-spacing:-.02em;display:inline-flex;align-items:baseline;gap:.1rem}.room-name-text{color:#000;-webkit-text-fill-color:#000;background:none!important}.logo-math{background:linear-gradient(135deg,#6ba3d4,#8ec5e8);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.logo-four{font-size:3rem;font-weight:650;background:linear-gradient(135deg,#7cc9a0,#96d7b3);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.logo-speed{background:linear-gradient(135deg,#e5b66f,#f2cc95);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.schriftlich-grid-container{position:relative;display:inline-block;background:#fff;padding:1.2rem 1.5rem;border-radius:10px;box-shadow:0 2px 8px #0000000f;margin:0 auto 1.5rem}.schriftlich-correction-hint{margin:.6rem auto 0;max-width:360px;text-align:center;font-size:.92rem;color:#c22;font-weight:500}.schriftlich-grid{display:grid;border-top:1px solid #ddd;border-left:1px solid #ddd}.grid-cell{width:50px;height:50px;display:flex;align-items:center;justify-content:center;border-right:1px solid #ddd;border-bottom:1px solid #ddd;box-sizing:border-box;margin:0}.grid-cell.digit{font-family:Chalkboard SE,Comic Sans MS,Comic Sans,Marker Felt,Segoe Print,Comic Neue,cursive,sans-serif;font-size:28px;font-weight:400;color:#222}.grid-cell.blue{color:#369}.grid-cell.red{color:#c22}.grid-cell.plus{font-family:Chalkboard SE,Comic Sans MS,Comic Sans,Marker Felt,Segoe Print,Comic Neue,cursive,sans-serif;font-size:28px;font-weight:700;color:#222}.digit-input{width:100%;height:100%;border:none;background:transparent;text-align:center;font-family:Chalkboard SE,Comic Sans MS,Comic Sans,Marker Felt,Segoe Print,Comic Neue,cursive,sans-serif;font-size:28px;padding:0;margin:0;box-sizing:border-box;color:#222;display:flex;align-items:center;justify-content:center;cursor:default;user-select:none;-webkit-user-select:none;outline:none}.digit-input:focus{outline:2px solid #336699;outline-offset:-2px}.digit-input:focus:after{content:"";display:inline-block;width:2px;height:.8em;background:#369;margin-left:1px;animation:cursor-blink 1s step-end infinite}.digit-input.blue{color:#369}.digit-input.red{color:#c22}.digit-input.small{font-size:20px}.schriftlich-line{position:absolute;left:1.5rem;right:1.5rem;height:2px;background:#222;top:calc(1.2rem + 151px)}.result-sep{border-top:3px solid #000}.borrow-cell{width:100%;height:100%;display:flex;justify-content:flex-end;align-items:center;padding-right:6px;cursor:pointer}.borrow-mark{display:inline-block;height:20px;border-left:2px solid #c22}.stat-row{display:flex;justify-content:space-between;align-items:center;padding:.5rem 0;border-bottom:1px solid #f1f5f9}.stat-row:last-child{border-bottom:none}.stat-row span{color:#64748b}.stat-row strong{font-size:1.1rem;color:#0f172a}.leaderboard-table{width:100%;border-collapse:collapse;font-size:.9rem}.leaderboard-table th{text-align:left;padding:.5rem .75rem;background:#f8fafc;color:#64748b;font-weight:600;font-size:.8rem;text-transform:uppercase}.leaderboard-table td{padding:.5rem .75rem;border-bottom:1px solid #f1f5f9;color:#334155}.leaderboard-table tr:last-child td{border-bottom:none}.leaderboard-table .truncate{max-width:100px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.p-0{padding:0!important}.einmaleins-toggles,.schriftlich-toggles{display:flex;flex-direction:column;gap:.25rem;margin-top:1rem;padding-left:.5rem;border-left:2px solid #e2e8f0}.fake-input{display:inline-flex;align-items:center;justify-content:center;cursor:text;user-select:none;-webkit-user-select:none;outline:none;min-height:2.8rem}.fake-input:focus,.fake-input--focused{outline:2px solid var(--accent);outline-offset:2px}.fake-input__cursor{display:inline-block;width:2px;height:1.2em;background:var(--accent);margin-left:1px;vertical-align:middle;animation:cursor-blink 1s step-end infinite}.virtual-keyboard{display:grid;gap:.4rem;margin-top:.75rem;padding:.75rem;background:var(--card);border-radius:8px;border:1px solid #e6e9ef;box-shadow:0 4px 14px #00000014;touch-action:manipulation;-webkit-user-select:none;user-select:none}.virtual-keyboard__key{padding:clamp(.7rem,3.5vh,1.4rem) .4rem;font-size:1.25rem;font-weight:600;font-family:Noto Sans,sans-serif;color:#1e293b;background:#f1f5f9;border:1px solid #cbd5e1;border-radius:8px;cursor:pointer;transition:background .1s,transform .08s,box-shadow .08s;box-shadow:0 2px #c4cdd8;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.virtual-keyboard__key:hover{background:#e2e8f0}.virtual-keyboard__key:active{transform:translateY(1px);box-shadow:none;background:#dbe4f0}.virtual-keyboard__key--action{background:#fee2e2;border-color:#fca5a5;color:#b91c1c;box-shadow:0 2px #f08080}.virtual-keyboard__key--action:hover{background:#fecaca}.virtual-keyboard__key--action:active{background:#fca5a5;box-shadow:none}.virtual-keyboard__key--submit{background:var(--accent);border-color:#1d4ed8;color:#fff;box-shadow:0 2px #1e40af}.virtual-keyboard__key--submit:hover{background:#2563eb}.virtual-keyboard__key--submit:active{background:#1d4ed8;box-shadow:none}.virtual-kb-toggle{display:inline-flex;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;border-radius:8px;border:1px solid #cbd5e1;background:#f1f5f9;color:#475569;cursor:pointer;flex-shrink:0;transition:background .15s,color .15s}.virtual-kb-toggle:hover{background:#e2e8f0;color:var(--accent);border-color:var(--accent)}.prozent-gleichung{max-width:580px;width:100%;text-align:left;align-items:flex-start}.prozent-problem-text{font-size:1.1rem;line-height:1.6;background:var(--card);border-left:4px solid var(--accent);border-radius:4px;padding:.75rem 1rem;margin:0;width:100%;box-sizing:border-box}.prozent-problem-text--secondary{font-size:.9rem;opacity:.75}.prozent-step-label{font-size:1rem;color:#444;margin-top:.25rem}.prozent-equation-row{display:flex;align-items:center;gap:.5rem}.prozent-equation-error{color:var(--bad);font-size:.92rem;font-weight:500;padding:.3rem 0}.prozent-equation-confirmed{display:flex;align-items:center;gap:.5rem;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:6px;padding:.4rem .75rem;font-family:Noto Sans,monospace;font-size:1rem;width:100%;box-sizing:border-box}.prozent-equation-text{flex:1;word-break:break-all}.prozent-equation-hint{font-size:1.1rem;color:#d97706;cursor:help}