.vocab-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-m);margin:var(--space-l) 0}.vocab-card{background:var(--bg-card);border:1px solid var(--line-color);padding:var(--space-m);transition:transform .2s,box-shadow .2s}.vocab-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px #00000014}.vocab-russian{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-xs)}.vocab-word{font-size:1.5rem;font-family:var(--font-serif);color:var(--text-ink);cursor:pointer;transition:color .2s}.vocab-word:hover{color:var(--accent-red)}.vocab-transcription{font-family:monospace;font-size:.9rem;color:var(--text-light);margin-bottom:var(--space-xs)}.vocab-danish{font-size:1.1rem;color:var(--text-faded);padding-top:var(--space-xs);border-top:1px solid var(--line-color)}.vocab-example{margin-top:var(--space-s);padding:var(--space-s);background:var(--bg-paper);font-size:.9rem}.example-russian{color:var(--text-ink);margin-bottom:4px}.speak-btn{background:none;border:2px solid var(--line-color);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--accent-blue);transition:all .2s}.speak-btn:hover{background:var(--accent-blue);border-color:var(--accent-blue);color:#fff}.speak-mini{background:none;border:none;padding:4px;cursor:pointer;color:var(--text-light);transition:color .2s}.speak-mini:hover{color:var(--accent-blue)}.speak-sentence-btn,.speak-line-btn{background:none;border:1px solid var(--line-color);border-radius:4px;padding:6px 10px;cursor:pointer;color:var(--text-faded);transition:all .2s;margin-left:var(--space-xs)}.speak-sentence-btn:hover,.speak-line-btn:hover{background:var(--accent-blue);border-color:var(--accent-blue);color:#fff}.exercise-container{background:var(--bg-card);border:1px solid var(--line-color);padding:var(--space-l);margin:var(--space-l) 0;box-shadow:0 2px 8px #0000000a}.exercise-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-m);padding-bottom:var(--space-s);border-bottom:1px solid var(--line-color)}.exercise-progress{font-size:.875rem;color:var(--text-light);text-transform:uppercase;letter-spacing:.05em}.exercise-score{font-weight:600;color:var(--accent-blue)}.exercise-actions{display:flex;gap:var(--space-s);margin-top:var(--space-m)}.fill-blank-sentence{font-size:1.25rem;line-height:2;display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-xs);margin:var(--space-m) 0}.sentence-part{font-family:var(--font-serif)}.blank-input{font-size:1.1rem;padding:8px 16px;border:2px solid var(--accent-blue);border-radius:4px;min-width:150px;font-family:var(--font-sans);text-align:center;transition:all .2s}.blank-input:focus{outline:none;box-shadow:0 0 0 3px #2c3e5026}.blank-input.correct{border-color:var(--color-success);background:var(--color-success-bg)}.blank-input.incorrect{border-color:var(--color-error);background:var(--color-error-bg)}.fill-blank-danish{color:var(--text-light);font-style:italic;margin-bottom:var(--space-m)}.listening-prompt{text-align:center;margin:var(--space-m) 0}.listen-btn{display:inline-flex;align-items:center;gap:var(--space-s);padding:var(--space-m) var(--space-l);background:var(--accent-blue);color:#fff;border:none;border-radius:50px;font-size:1rem;cursor:pointer;transition:all .2s;margin:var(--space-m) 0}.listen-btn:hover{transform:scale(1.05);box-shadow:0 4px 12px #2c3e504d}.listen-slow-btn{background:transparent;border:2px solid var(--line-color);padding:8px 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0}.matching-column{display:flex;flex-direction:column;gap:var(--space-s)}.match-item{padding:var(--space-s) var(--space-m);background:#fff;border:2px solid var(--line-color);border-radius:8px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:space-between}.match-item:hover:not(.matched){border-color:var(--accent-blue)}.match-item.selected{border-color:var(--accent-blue);background:#2c3e500d;box-shadow:0 0 0 3px #2c3e501a}.match-item.matched{opacity:.6;cursor:default}.match-item.matched.correct{border-color:var(--color-success);background:var(--color-success-bg)}.match-item.incorrect{animation:shake .4s;border-color:var(--color-error)}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.left-item{font-family:var(--font-serif);font-size:1.1rem}.right-item{justify-content:center}.writing-prompt{text-align:center;margin-bottom:var(--space-m)}.writing-danish{font-size:1.5rem;color:var(--text-ink);margin:var(--space-m) 0;font-family:var(--font-serif)}.hint-btn{background:transparent;border:1px solid var(--line-color);padding:8px 16px;border-radius:20px;cursor:pointer;color:var(--text-faded);transition:all .2s}.hint-btn:hover{border-color:var(--accent-blue);color:var(--accent-blue)}.writing-input-area{text-align:center;margin:var(--space-m) 0}.writing-input{font-size:1.5rem;padding:var(--space-s) var(--space-m);border:2px solid var(--line-color);border-radius:8px;width:100%;max-width:400px;text-align:center;font-family:var(--font-serif)}.writing-input:focus{outline:none;border-color:var(--accent-blue);box-shadow:0 0 0 3px #2c3e501a}.writing-input.correct{border-color:var(--color-success);background:var(--color-success-bg)}.writing-input.incorrect{border-color:var(--color-error);background:var(--color-error-bg)}.writing-hint{font-size:.875rem;color:var(--text-light);margin-top:var(--space-xs)}.sentence-builder-prompt{text-align:center;margin-bottom:var(--space-m)}.danish-sentence{font-size:1.25rem;color:var(--text-faded);font-style:italic;margin-top:var(--space-s)}.sentence-builder-answer{min-height:60px;background:var(--bg-paper);border:2px dashed var(--line-color);border-radius:8px;padding:var(--space-m);margin:var(--space-m) 0;display:flex;flex-wrap:wrap;gap:var(--space-xs);align-items:center;justify-content:center}.sentence-builder-answer .placeholder{color:var(--text-light)}.selected-word{background:var(--accent-blue);color:#fff;padding:8px 16px;border-radius:4px;cursor:pointer;font-family:var(--font-serif);font-size:1.1rem;transition:all .2s}.selected-word:hover{background:var(--accent-red)}.sentence-builder-words{display:flex;flex-wrap:wrap;gap:var(--space-s);justify-content:center;margin:var(--space-m) 0}.word-tile{padding:10px 20px;background:#fff;border:2px solid var(--line-color);border-radius:8px;cursor:pointer;font-size:1.1rem;font-family:var(--font-serif);transition:all .2s}.word-tile:hover:not(.used){border-color:var(--accent-blue);transform:translateY(-2px)}.word-tile.used{opacity:.3;cursor:default}.flashcard-container{text-align:center;padding:var(--space-m)}.flashcard-progress{font-size:.875rem;color:var(--text-light);margin-bottom:var(--space-m)}.flashcard{perspective:1000px;width:100%;max-width:400px;height:250px;margin:0 auto var(--space-m);cursor:pointer}.flashcard-inner{position:relative;width:100%;height:100%;transition:transform .6s;transform-style:preserve-3d}.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid var(--line-color);border-radius:12px;background:#fff;box-shadow:0 4px 12px #00000014}.flashcard-back{transform:rotateY(180deg);background:var(--accent-blue);color:#fff}.flashcard-text{font-size:2rem;font-family:var(--font-serif)}.flashcard-audio{position:absolute;bottom:20px;background:none;border:2px solid var(--line-color);border-radius:50%;width:44px;height:44px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-faded);transition:all .2s}.flashcard-audio:hover{background:var(--accent-blue);border-color:var(--accent-blue);color:#fff}.flashcard-hint{font-size:.875rem;color:var(--text-light);margin-bottom:var(--space-m)}.flashcard-controls{display:flex;justify-content:center;gap:var(--space-m)}.dialogue-container{margin:var(--space-l) 0}.dialogue-controls{margin-bottom:var(--space-m)}.dialogue-lines{display:flex;flex-direction:column;gap:var(--space-m)}.dialogue-line{display:flex;flex-direction:column;max-width:80%}.dialogue-line.speaker-a{align-self:flex-start}.dialogue-line.speaker-b{align-self:flex-end}.dialogue-speaker{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-light);margin-bottom:4px}.dialogue-bubble{background:#fff;border:1px solid var(--line-color);padding:var(--space-s) var(--space-m);border-radius:12px;position:relative}.speaker-a .dialogue-bubble{border-bottom-left-radius:4px}.speaker-b .dialogue-bubble{border-bottom-right-radius:4px;background:var(--accent-blue);border-color:var(--accent-blue)}.speaker-b .dialogue-russian{color:#fff}.speaker-b .dialogue-danish{color:#ffffffb3}.speaker-b .speak-line-btn{color:#fff;border-color:#ffffff4d}.dialogue-russian{font-family:var(--font-serif);font-size:1.1rem;margin-bottom:4px}.dialogue-danish{font-size:.9rem;color:var(--text-light);font-style:italic}.play-all-btn{background:var(--accent-blue);color:#fff}.exercise-feedback{margin-top:var(--space-m);padding:var(--space-m);border-radius:8px;display:none}.exercise-feedback.correct,.exercise-feedback.incorrect{display:block;animation:slideIn .3s ease}.exercise-feedback.correct{background:var(--color-success-bg);border:1px solid var(--color-success);color:#1e8449}.exercise-feedback.incorrect{background:var(--color-error-bg);border:1px solid var(--color-error);color:#a93226}.exercise-feedback .btn-next{margin-top:var(--space-s)}.exercise-results{text-align:center;padding:var(--space-xl) var(--space-m)}.result-score{font-size:3rem;font-weight:700;color:var(--accent-blue);font-family:var(--font-serif)}.result-percent{font-size:1.5rem;color:var(--text-faded);margin-bottom:var(--space-m)}.result-message{font-size:1.1rem;color:var(--text-faded);margin-bottom:var(--space-l)}.lesson-nav{display:flex;justify-content:space-between;align-items:center;padding:var(--space-m) 0;border-top:1px solid var(--line-color);margin-top:var(--space-xl)}.lesson-nav-item{text-decoration:none;color:var(--text-faded);display:flex;align-items:center;gap:var(--space-xs);transition:color .2s}.lesson-nav-item:hover{color:var(--accent-red)}.lesson-nav-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;display:block}.lesson-nav-title{font-weight:600}.section-intro{background:linear-gradient(135deg,var(--accent-blue) 0%,#1a252f 100%);color:#fff;padding:var(--space-xl) 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var(--line-color);border-radius:8px;width:100%;max-width:400px;text-align:center;font-family:var(--font-serif)}.typing-input:focus{outline:none;border-color:var(--accent-blue)}.typing-preview{margin-top:var(--space-s);font-size:1.2rem;font-family:var(--font-serif);min-height:30px}.char-correct{color:var(--color-success)}.char-incorrect{color:var(--color-error);text-decoration:underline wavy}.animated-dialogue .dialogue-controls{margin-bottom:var(--space-m);display:flex;gap:var(--space-s)}.dialogue-stage{min-height:300px}.dialogue-line.animate-in{animation:slide-in .3s ease-out}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-8px)}40%{transform:translate(8px)}60%{transform:translate(-8px)}80%{transform:translate(8px)}}.shake{animation:shake .5s}@keyframes pulse-success{0%{transform:scale(1)}50%{transform:scale(1.05);box-shadow:0 0 20px #27ae6080}to{transform:scale(1)}}.pulse-success{animation:pulse-success .5s}@keyframes 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0}.ai-header{display:flex;align-items:center;gap:var(--space-s);padding:var(--space-m);background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.ai-avatar{width:44px;height:44px;background:#fff3;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem}.ai-info{flex:1}.ai-name{font-weight:600;font-size:1.1rem}.ai-status{font-size:.8rem;opacity:.8}.ai-help-btn{width:32px;height:32px;border-radius:50%;border:2px solid rgba(255,255,255,.5);background:transparent;color:#fff;font-weight:700;cursor:pointer;transition:all .2s}.ai-help-btn:hover{background:#fff3;border-color:#fff}.ai-messages{min-height:250px;max-height:400px;overflow-y:auto;padding:var(--space-m);display:flex;flex-direction:column;gap:var(--space-s)}.ai-message{display:flex;align-items:flex-start;gap:var(--space-xs);max-width:85%;animation:slideIn .3s 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