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solid black;padding:0 2px}.fraction-bottom{display:block;text-align:center}.visual-grid-100{display:grid;grid-template-columns:repeat(10,1fr);gap:2px;background:#f9f9f9;padding:3px;border-radius:4px;width:fit-content;margin-bottom:3px}.visual-circle{width:12px;height:12px;border-radius:50%;border:1px solid #ddd;box-sizing:border-box;-webkit-print-color-adjust:exact;print-color-adjust:exact}.circle-empty{background-color:transparent;border-color:#bbb}.circle-group-1{background-color:var(--primary-color);border-color:#3a8ccf}.circle-group-2{background-color:#ff6b6b;border-color:#d64545}.circle-group-3{background-color:#4ecdc4;border-color:#3aa69e}.circle-input-group-1{border:2px solid var(--primary-color);color:var(--primary-color);font-weight:700}.circle-input-group-2{border:2px solid #ff6b6b;color:#d64545;font-weight:700}.circle-input-group-3{border:2px solid #4ecdc4;color:#3aa69e;font-weight:700}.triangle-problem{display:flex;justify-content:center;padding:5px 0}.triangle-container{position:relative;width:200px;height:160px}.triangle-container .triangle-svg{position:absolute;top:0;left:0;width:100%;height:100%}.triangle-container .triangle-pos{position:absolute;transform:translate(-50%,-50%)}.triangle-container .corner-top{top:15px;left:100px}.triangle-container .corner-right{top:145px;left:180px}.triangle-container .corner-left{top:145px;left:20px}.triangle-container .side-right{top:80px;left:140px}.triangle-container .side-bottom{top:145px;left:100px}.triangle-container .side-left{top:80px;left:60px}.triangle-container .triangle-field{width:45px;height:35px;background:#fff;border:2px solid #ccc;border-radius:8px;display:flex;justify-content:center;align-items:center;text-align:center;font-size:14pt;font-family:Comic Neue,cursive}.triangle-container input.triangle-field{outline:none}.triangle-container .triangle-field.static{border:none;background:transparent;font-weight:700}.interactive-word{cursor:pointer;padding:0 4px 1px;border-radius:4px;transition:background-color .2s;border-bottom:3px solid transparent}.marked-noun{border-bottom-color:red!important}.marked-verb{border-bottom-color:#00f!important}.marked-adj{border-bottom-color:green!important}.marked-artikel{border-bottom-color:orange!important}.word-types-legend{display:flex;gap:20px;font-size:1rem;margin-bottom:10px;align-items:center;justify-content:center;background:#f9f9f9;padding:10px;border-radius:10px}.legend-item{display:flex;align-items:center;gap:8px;cursor:pointer;padding:4px 8px;border-radius:6px;transition:all .2s ease}.legend-item:hover{background-color:#0000000d;transform:translateY(-1px)}.legend-item:active,.legend-item.active{transform:translateY(0);background-color:#0000001a;box-shadow:inset 0 2px 4px #0000001a}.word-type-btn{transition:all .2s ease}.word-type-btn.active{box-shadow:inset 0 2px 5px #0003;transform:translateY(1px);filter:brightness(.9)}.legend-color{width:20px;height:4px;border-radius:2px}.house-container{display:flex;flex-direction:column;align-items:center;width:100px;margin:0 auto}.house-roof{width:100%;height:40px;background:#e8e8e8;border-radius:50px 50px 0 0;border:2px solid #ddd;border-bottom:none;display:flex;justify-content:center;align-items:center;font-weight:700;font-size:1.2rem;color:var(--primary-color)}.house-body{width:100%;border:2px solid #ddd;background:#fff}.house-floor{display:flex;border-bottom:1px solid #eee}.house-floor:last-child{border-bottom:none}.house-cell{flex:1;height:40px;display:flex;justify-content:center;align-items:center;font-size:14pt;border-right:1px solid #eee}.house-cell:last-child{border-right:none}.house-input{width:100%;height:100%;border:none;text-align:center;font-family:inherit;font-size:inherit;background:transparent;outline:none}.house-cell.input{background:#fff}.house-cell.static{background:#fcfcfc;color:#444}.qr-code-container{position:absolute;top:var(--sheet-qr-top);right:10mm;width:100px;height:100px;display:flex;justify-content:center;align-items:center;background:#fff;padding:5px;z-index:10}.qr-code-container canvas,.qr-code-container img{max-width:100%;max-height:100%}.qr-hidden{display:none!important}.sheet-logo{position:absolute;top:var(--sheet-logo-top);left:10mm;height:100px;width:100px;object-fit:contain;object-position:top left;z-index:1;background:none}.logo-hidden{display:none!important}.rechenstrich-container{margin-top:10px;background:#fff}.rechenstrich-station{position:absolute;transform:translate(-50%,5px)}.rechenstrich-fixed{font-weight:700;font-size:1.1rem}.rechenstrich-input{width:35px!important;height:25px!important;padding:0!important;text-align:center;font-size:.9rem!important;border:1px solid #ccc;border-radius:3px;background-color:#fff;outline:none;transition:all .3s ease}.rechenstrich-input.correct{border-color:#2ecc71;background-color:#e8f8f5;color:#27ae60}.rechenstrich-input.incorrect{border-color:#e74c3c;background-color:#fadbd8;color:#c0392b}.rechenstrich-input.small{width:30px!important}.rechenstrich-jump{position:absolute;transform:translate(-50%,-50%);display:flex;align-items:center;font-weight:700;color:var(--primary-color)}.site-footer{width:100%;max-width:800px;margin-top:3rem;margin-bottom:2rem;display:flex;justify-content:center;border-top:1px solid rgba(0,0,0,.05);padding-top:2rem}.btn-github{display:inline-flex;align-items:center;gap:12px;padding:12px 24px;background:#24292e;color:#fff;text-decoration:none;border-radius:12px;font-weight:700;font-size:1rem;transition:all .3s cubic-bezier(.175,.885,.32,1.275);box-shadow:0 4px 6px #0000001a}.btn-github:hover{background:#1b1f23;transform:translateY(-3px) scale(1.02);box-shadow:0 8px 15px #0003}.btn-github:active{transform:translateY(-1px)}.github-icon{flex-shrink:0}.money-collection{padding:5px}.money-coin{border-radius:50%;display:flex;justify-content:center;align-items:center;font-size:.7rem;font-weight:700;box-shadow:1px 2px 3px #0000001a;border:1px solid rgba(0,0,0,.1);text-align:center;line-height:1}.money-note{width:65px;height:35px;display:flex;justify-content:center;align-items:center;font-size:.75rem;font-weight:700;border-radius:4px;box-shadow:2px 3px 5px #0000001a;border:1px solid rgba(0,0,0,.1);color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.3)}.m-10{background:#eec12e}.m-20{background:#d02c34}.m-50{background:#1d8b4e}.m-100{background:#2358a6}.m-5{width:45px;height:45px;background:gold;color:#b8860b;border-color:#daa520}.m-2{width:40px;height:40px;background:#e0e0e0;color:#666;border-color:#ccc}.m-1{width:35px;height:35px;background:#e0e0e0;color:#666;border-color:#ccc}.money-note-img{height:45px;width:auto;box-shadow:2px 3px 5px #0003;border-radius:4px;-webkit-print-color-adjust:exact;print-color-adjust:exact}.money-coin-img{width:35px;height:35px;object-fit:contain;filter:drop-shadow(1px 2px 3px rgba(0,0,0,.2));-webkit-print-color-adjust:exact;print-color-adjust:exact}.m-0_5{width:32px;height:32px;background:#e0e0e0;color:#666;border-color:#ccc}.m-0_2,.m-0_1,.m-0_05{width:34px;height:34px;font-size:.65rem;background:#cd7f32;color:#5c4033;border-color:sienna}.banknotes-container.overlapping .money-note-img{margin-right:-42px}.banknotes-container.overlapping .money-note-img:last-child{margin-right:0}.banknotes-container{padding:2px 0}.coins-container{padding:5px 0}.clock-number{position:absolute;top:50%;left:50%;width:20px;height:20px;margin-left:-10px;margin-top:-10px;text-align:center;line-height:20px;font-size:14px;font-weight:700;color:#333}.clock-number-hour{position:absolute;top:50%;left:50%;width:20px;height:20px;margin-left:-10px;margin-top:-10px;text-align:center;line-height:20px;font-size:14px;font-weight:700;color:green}.clock-number-minute{position:absolute;top:50%;left:50%;width:20px;height:20px;margin-left:-10px;margin-top:-10px;text-align:center;line-height:20px;font-size:12px;font-weight:700;color:#8a2be2}.interactive-word{cursor:pointer;padding:0 2px;border-radius:2px;transition:background-color .2s,border-color .2s;user-select:none;-webkit-user-select:none;border-bottom:3px solid transparent}.interactive-word:hover{background-color:#0000000d}.interactive-word.correct{background-color:#2ecc7133}.interactive-word.incorrect{background-color:#e74c3c33}.word-types-legend{display:flex;gap:15px;background:#fff;padding:10px 15px;border:1px solid #ddd;border-radius:8px;margin-bottom:20px;font-size:.9rem;font-family:Nunito,sans-serif;justify-content:center;flex-wrap:wrap;width:100%;box-sizing:border-box}.legend-item{display:flex;align-items:center;gap:8px;padding:5px 10px;border-radius:6px;cursor:pointer;transition:background .2s}.legend-item:hover{background:#f8f9fa}.legend-item.active{background:#e9ecef;box-shadow:inset 0 2px 4px #0000000d;font-weight:700}.legend-color{width:20px;height:10px;border-radius:4px;border:1px solid rgba(0,0,0,.1)}.cursor-noun{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 32 32'%3E%3Ccircle cx='10' cy='10' r='8' fill='red' fill-opacity='0.4' stroke='red' stroke-width='2' /%3E%3Cpath d='M10 10 L25 25' stroke='black' stroke-width='1' /%3E%3C/svg%3E") 10 10,auto}.cursor-verb{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 32 32'%3E%3Ccircle cx='10' cy='10' r='8' fill='blue' fill-opacity='0.4' stroke='blue' stroke-width='2' /%3E%3Cpath d='M10 10 L25 25' stroke='black' stroke-width='1' /%3E%3C/svg%3E") 10 10,auto}.cursor-adj{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 32 32'%3E%3Ccircle cx='10' cy='10' r='8' fill='green' fill-opacity='0.4' stroke='green' stroke-width='2' /%3E%3Cpath d='M10 10 L25 25' stroke='black' stroke-width='1' /%3E%3C/svg%3E") 10 10,auto}.cursor-artikel{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 32 32'%3E%3Ccircle cx='10' cy='10' r='8' fill='orange' fill-opacity='0.4' stroke='orange' stroke-width='2' /%3E%3Cpath d='M10 10 L25 25' stroke='black' stroke-width='1' /%3E%3C/svg%3E") 10 10,auto}.cursor-eraser{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 32 32'%3E%3Crect x='2' y='2' width='16' height='16' fill='%23888' fill-opacity='0.4' stroke='%23888' stroke-width='2' /%3E%3Cpath d='M10 10 L25 25' stroke='black' stroke-width='1' /%3E%3C/svg%3E") 10 10,auto}.interactive-word{padding:2px 4px;border-radius:4px;cursor:inherit;transition:background .2s}.interactive-word:hover{background:#0000000d}.marked-noun{border-bottom:3px solid red!important}.marked-verb{border-bottom:3px solid blue!important}.marked-adj{border-bottom:3px solid green!important}.marked-artikel{border-bottom:3px solid orange!important}.interactive-word.correct{background-color:#4caf501a}.interactive-word.incorrect{background-color:#f443361a}.btn-time{padding:6px 12px;font-size:.85rem;font-weight:700;border:2px solid var(--primary-color);background:#fff;color:var(--primary-color);border-radius:8px;cursor:pointer;transition:all .2s;font-family:Nunito,sans-serif}.btn-time:hover{background:var(--primary-color);color:#fff}.problem.correct[data-type=time_analog_set] .clock-face{background:#4caf500d;border:2px solid #4caf50}.modal{display:none;position:fixed;z-index:2000;left:0;top:0;width:100%;height:100%;overflow:auto;background-color:#00000080;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.modal-content{background-color:#fefefe;margin:5% auto;padding:25px;border-radius:20px;width:80%;max-width:600px;box-shadow:0 15px 35px #0003;font-family:Nunito,sans-serif}.modal-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #eee;margin-bottom:20px;padding-bottom:10px}.modal-header h2{margin:0;color:var(--primary-color)}.close-modal{color:#aaa;font-size:28px;font-weight:700;cursor:pointer;transition:color .2s}.close-modal:hover{color:var(--text-color)}.saved-list{max-height:400px;overflow-y:auto}.saved-item{display:flex;justify-content:space-between;align-items:center;padding:15px;border-bottom:1px solid #eee;transition:background-color .2s;border-radius:10px;margin-bottom:5px}.saved-item:hover{background-color:#f8f9fa}.saved-item-info{flex-grow:1}.saved-item-name{font-weight:700;font-size:1.1rem;display:block}.saved-item-date{font-size:.85rem;color:#888}.saved-item-actions{display:flex;gap:10px}.btn-load{background:var(--primary-color);color:#fff;padding:6px 12px;font-size:.9rem;border-radius:8px}.btn-delete{background:var(--accent-color);color:#fff;padding:6px 12px;font-size:.9rem;border-radius:8px}.time-controls{display:flex;justify-content:center;gap:20px;margin-top:5px;background:#f8f9fa;padding:10px;border-radius:12px}.time-control-group{display:flex;flex-direction:column;align-items:center;gap:5px}.time-label{font-weight:700;font-size:.9rem;color:#555;min-width:35px}.arrow-stack{display:flex;flex-direction:column;gap:2px}.btn-arrow{padding:2px 8px;font-size:.8rem;border:1px solid #ddd;border-radius:4px;background:#fff;color:#333;line-height:1;transition:all .1s;user-select:none;-webkit-user-select:none}.btn-arrow:hover{background:#e9ecef;transform:none;box-shadow:none}.btn-arrow:active{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.game-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000f2;z-index:9999;display:flex;justify-content:center;align-items:center;padding:20px;box-sizing:border-box}.game-content{background:#fff;border-radius:20px;padding:2rem;max-width:1000px;width:100%;max-height:90vh;overflow-y:auto;position:relative;box-shadow:0 20px 60px #0000004d}.btn-close-game{position:absolute;top:15px;right:15px;background:#e74c3c;color:#fff;border:none;width:40px;height:40px;border-radius:50%;font-size:24px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s;z-index:10}.btn-close-game:hover{background:#c0392b;transform:rotate(90deg)}#game-instruction{text-align:center;font-size:1.8rem;color:var(--text-color);margin-bottom:1rem}#score-display{text-align:center;font-size:1.2rem;color:var(--primary-color);font-weight:700;margin-bottom:1.5rem}#map-container{width:100%;max-width:800px;margin:0 auto;display:flex;justify-content:center;align-items:center}#map-container svg{max-width:100%;height:auto;cursor:pointer}.game-controls{display:flex;justify-content:center;gap:1rem;margin-top:1.5rem}.region-path{cursor:pointer;transition:fill .3s,opacity .3s;fill:#ccc;stroke:#fff;stroke-width:.5}.region-path:hover{fill:#4facfe;opacity:.8}.region-path.correct{fill:#2ecc71!important;opacity:1;pointer-events:none}.region-path.incorrect{fill:#e74c3c!important;animation:shake .5s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.btn-primary{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;padding:12px 24px;border:none;border-radius:12px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 5px 15px #4facfe66}@media screen and (max-width:768px){.game-content{padding:1rem;max-height:95vh}#game-instruction{font-size:1.3rem}#score-display{font-size:1rem}.btn-close-game{width:35px;height:35px;font-size:20px}}.nav-section-title{font-size:.9rem;font-weight:800;color:#a0aec0;margin:15px 0 10px;text-transform:uppercase;letter-spacing:.05em;width:100%;text-align:center}.grade-tabs-container{display:flex;gap:15px;overflow-x:auto;padding:5px 20px 10px;margin-bottom:10px;width:100%;scrollbar-width:none;-ms-overflow-style:none;justify-content:center;border-bottom:2px solid #edf2f7}.grade-tabs-container::-webkit-scrollbar{display:none}.grade-tab{padding:8px 12px;cursor:pointer;font-weight:700;color:#718096;border-bottom:3px solid transparent;transition:all .2s;white-space:nowrap;position:relative;top:2px}.grade-tab:hover{color:var(--primary-color)}.grade-tab.active{border-bottom-color:var(--primary-color);color:var(--primary-color);background-color:transparent}.topic-chips-container{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-start;width:100%;margin-bottom:25px}.topic-chip{padding:6px 12px;background-color:#f7fafc;border:1px solid #edf2f7;border-radius:16px;cursor:pointer;font-size:.9rem;color:var(--text-color);transition:all .2s;-webkit-user-select:none;user-select:none;display:flex;align-items:center;gap:6px;cursor:grab;text-align:left}.topic-chip:active{cursor:grabbing}.topic-chip:hover{background-color:#edf2f7;transform:translateY(-1px);border-color:#cbd5e0}.topic-chip.active{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color);box-shadow:0 4px 10px #4facfe4d}@media screen and (max-width:850px){html,body{overflow-x:hidden!important;width:100%!important;position:relative}body{padding:0!important}.controls{flex-direction:column;padding:1rem;gap:.5rem;width:95%}select,button{width:100%;font-size:1.1rem}.header-content{flex-direction:column!important;gap:15px!important;padding:15px 10px!important;align-items:center!important}.site-logo{justify-content:center;width:100%}.main-nav{gap:1rem!important;width:100%!important;justify-content:center!important;flex-wrap:wrap}.nav-link{font-size:.9rem!important}.logo-text{font-size:1.4rem!important}.lang-group{margin-top:5px!important;justify-content:center;width:100%}.grade-tab{padding:8px 12px;font-size:.9rem;min-width:60px}}.sheets-viewport{width:100%;overflow-x:hidden;display:flex;justify-content:center;padding:10px 0}#sheetsWrapper,#builderSheetsWrapper{width:794px;flex-shrink:0;display:flex;flex-direction:column;align-items:center;transform-origin:top center}