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h2{font-size:1.75rem;font-weight:800;color:var(--text-primary);margin-bottom:.5rem}.vocabulary-module .vocab-level-card .description{font-size:.95rem;color:var(--text-secondary);margin-bottom:1.5rem;line-height:1.5;min-height:3em}.vocabulary-module .vocab-level-card .level-stats{margin-top:auto;border-top:1px solid var(--border-color);padding-top:1.25rem;display:flex;align-items:center;justify-content:space-between}.vocabulary-module .vocab-level-card .level-stats .stat-item{display:flex;flex-direction:column}.vocabulary-module .vocab-level-card .level-stats .stat-item .value{font-size:1.1rem;font-weight:700;color:var(--text-primary)}.vocabulary-module .vocab-level-card .level-stats .stat-item .label{font-size:.75rem;color:var(--text-secondary);text-transform:uppercase;font-weight:600}.vocabulary-module .vocab-level-card .level-progress-section{margin:1.5rem 0}.vocabulary-module .vocab-level-card .level-progress-section .progress-info{display:flex;justify-content:space-between;font-size:.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:.5rem}.vocabulary-module .vocab-level-card .level-progress-section .progress-bar{height:6px;background:var(--bg-primary);border-radius:10px;overflow:hidden}.vocabulary-module .vocab-level-card .level-progress-section .progress-bar .fill{height:100%;background:#4f46e5;transition:width .5s ease}.vocabulary-module .vocab-level-card .start-btn{margin-top:1.5rem;width:100%;padding:.8rem;border-radius:8px;font-weight:700;font-size:1rem;display:flex;align-items:center;justify-content:center;gap:.5rem;background:var(--color-primary-dark);color:#fff;border:none;transition:filter .2s}.vocabulary-module .vocab-level-card .start-btn:hover{filter:brightness(1.2)}.vocabulary-module .study-session{max-width:700px;margin:0 auto;padding:2rem 1rem}.vocabulary-module .study-session .session-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:3rem}.vocabulary-module .study-session .session-header .exit-btn{display:flex;align-items:center;gap:.5rem;background:none;border:1px solid var(--border-color);color:var(--text-secondary);padding:.5rem 1rem;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s}.vocabulary-module .study-session .session-header .exit-btn:hover{background:var(--bg-secondary);color:var(--text-primary)}.vocabulary-module .study-session .session-header .progress-text{font-size:.9rem;font-weight:700;color:var(--text-secondary);background:var(--bg-secondary);padding:.4rem 1rem;border-radius:100px;border:1px solid var(--border-color)}.vocabulary-module .flashcard-container{perspective:1200px;height:400px;margin-bottom:3.5rem;cursor:pointer}.vocabulary-module .flashcard-container.flipped .flashcard-inner{transform:rotateY(180deg)}.vocabulary-module .flashcard-inner{position:relative;width:100%;height:100%;transition:transform .45s cubic-bezier(.19,1,.22,1);transform-style:preserve-3d}.vocabulary-module .flashcard-front,.vocabulary-module .flashcard-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:20px;background:var(--card-bg);border:1px solid var(--border-color);box-shadow:var(--shadow-md);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem;text-align:center}.vocabulary-module .flashcard-back{transform:rotateY(180deg);background:var(--bg-secondary)}.vocabulary-module .word-german{font-size:3.5rem;font-weight:800;color:var(--text-primary);word-break:break-all}.vocabulary-module .word-vietnamese{font-size:2.25rem;font-weight:700;color:#4f46e5;margin-bottom:1.5rem}.vocabulary-module .word-example{font-size:1.1rem;color:var(--text-secondary);font-style:italic;line-height:1.6}.vocabulary-module .hint-text{position:absolute;bottom:2rem;font-size:.75rem;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.1em;opacity:.5}.vocabulary-module .study-controls{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.vocabulary-module .study-controls button{padding:1rem;border-radius:12px;font-weight:700;font-size:1rem;border:1px solid var(--border-color);cursor:pointer;transition:all .2s;background:var(--card-bg);color:var(--text-primary)}.vocabulary-module .study-controls button:hover{transform:translateY(-2px)}.vocabulary-module .study-controls button.btn-1{border-color:#ef4444;color:#ef4444}.vocabulary-module .study-controls button.btn-1:hover{background:#fef2f2}.vocabulary-module .study-controls button.btn-3{border-color:#4f46e5;color:#4f46e5}.vocabulary-module .study-controls button.btn-3:hover{background:#eef2ff}.vocabulary-module .study-controls button.btn-5{border-color:#10b981;color:#10b981}.vocabulary-module .study-controls button.btn-5:hover{background:#ecfdf5}.vocabulary-module .finish-screen{text-align:center;padding:4rem;background:var(--card-bg);border-radius:20px;border:1px solid var(--border-color);box-shadow:var(--shadow-md)}.vocabulary-module .finish-screen .success-icon{font-size:4rem;color:#10b981;margin-bottom:2rem;display:inline-block}.vocabulary-module .finish-screen h2{font-size:2rem;margin-bottom:1rem}.vocabulary-module .finish-screen p{color:var(--text-secondary);margin-bottom:2.5rem}.vocabulary-module .finish-screen button{background:var(--color-primary-dark);color:#fff;border:none;padding:.8rem 2rem;border-radius:8px;font-weight:700}.vocabulary-module .learning-tips{padding:3rem;background:var(--bg-secondary);border-radius:20px;border:1px solid var(--border-color);margin-top:2rem}.vocabulary-module .learning-tips h3{font-size:1.4rem;margin-bottom:2rem;display:flex;align-items:center;gap:.75rem;color:var(--text-primary)}.vocabulary-module .learning-tips h3 svg{color:#f59e0b}.vocabulary-module .learning-tips .tips-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem}.vocabulary-module .learning-tips .tip-card h4{font-size:1.1rem;margin-bottom:.5rem;color:var(--text-primary)}.vocabulary-module .learning-tips .tip-card p{font-size:.9rem;color:var(--text-secondary);line-height:1.6;margin:0}.vocabulary-module .learning-tips .tip-card svg{color:#4f46e5;margin-bottom:1rem;font-size:1.5rem}@keyframes skeleton-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.vocab-bg-blobs{display:none}.matching-game-container{padding:2rem;max-width:1200px;margin:0 auto;min-height:80vh;display:flex;flex-direction:column;gap:2rem}.matching-game-container .game-header{display:flex;justify-content:space-between;align-items:center;width:100%;padding:0 .25rem}.matching-game-container .game-header .exit-btn{background:none;border:none;display:flex;align-items:center;gap:.5rem;color:var(--text-secondary);font-weight:600;cursor:pointer}.matching-game-container .game-header .exit-btn:hover{color:var(--text-primary)}.matching-game-container .game-header .timer{display:flex;align-items:center;gap:.5rem;font-size:1.25rem;font-weight:700;background:var(--bg-secondary);padding:.5rem 1rem;border-radius:12px;color:var(--profile-accent)}.matching-game-container .game-grid{display:grid;grid-template-columns:repeat(6,1fr);grid-auto-rows:1fr;gap:1rem;perspective:1000px;width:100%}@media(max-width:1000px){.matching-game-container .game-grid{grid-template-columns:repeat(4,1fr)}}@media(max-width:600px){.matching-game-container .game-grid{grid-template-columns:repeat(2,1fr)}}.matching-game-container .match-card{aspect-ratio:1;background:var(--card-bg);border:2px solid var(--border-color);border-radius:16px;display:flex;align-items:center;justify-content:center;padding:.75rem;cursor:pointer;transition:all .3s cubic-bezier(.175,.885,.32,1.275);text-align:center;font-weight:700;font-size:1rem;line-height:1.3;-webkit-user-select:none;user-select:none;overflow-wrap:anywhere;word-break:break-word}.matching-game-container .match-card .card-content{display:flex;align-items:center;justify-content:center;height:100%;width:100%}.matching-game-container .match-card:hover:not(.matched):not(.flipped){transform:translateY(-5px);border-color:var(--profile-accent);box-shadow:0 10px 20px #0000000d}.matching-game-container .match-card.flipped{background:#1e3a8a;color:#fff;border-color:#1e3a8a;transform:translateY(-5px) scale(1.02);box-shadow:0 10px 25px #1e3a8a40}.matching-game-container .match-card.matched{opacity:0;visibility:hidden;transform:scale(.3);pointer-events:none;transition:all .4s cubic-bezier(.4,0,1,1)}.matching-game-container .game-over-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2rem;animation:scaleIn .5s cubic-bezier(.175,.885,.32,1.275)}.matching-game-container .game-over-screen .trophy-icon{font-size:5rem;color:#fbbf24;filter:drop-shadow(0 0 15px rgba(251,191,36,.4))}.matching-game-container .game-over-screen h2{font-size:2.5rem;margin:0}.matching-game-container .game-over-screen .final-stats{text-align:center;font-size:1.5rem;color:var(--text-secondary)}.matching-game-container .game-over-screen .final-stats strong{color:var(--text-primary)}.matching-game-container .game-over-screen .play-again-btn{background:var(--profile-primary);color:#fff;border:none;padding:1rem 2rem;border-radius:16px;font-weight:700;font-size:1.1rem;cursor:pointer;transition:all .2s}.matching-game-container .game-over-screen .play-again-btn:hover{transform:scale(1.05)}.matching-game-container .game-over-screen .back-btn{background:none;border:none;color:var(--text-secondary);font-weight:600;cursor:pointer}.matching-game-container .game-over-screen .back-btn:hover{text-decoration:underline}@keyframes scaleIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.quiz-container{padding:2rem;max-width:700px;margin:0 auto;min-height:80vh;display:flex;flex-direction:column;gap:2rem}.quiz-container .quiz-header{display:flex;justify-content:space-between;align-items:center}.quiz-container .quiz-header .exit-btn{background:none;border:none;display:flex;align-items:center;gap:.5rem;color:var(--text-secondary);font-weight:600;cursor:pointer}.quiz-container .quiz-header .progress{font-weight:600;color:var(--text-secondary)}.quiz-container .question-card{background:var(--card-bg);padding:3rem 2rem;border-radius:24px;text-align:center;border:1px solid var(--border-color);box-shadow:0 10px 30px #0000000d;margin-bottom:2rem}.quiz-container .question-card .word-container{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.25rem;margin-bottom:1.5rem}.quiz-container .question-card .word-container .german-word{font-size:3.5rem;font-weight:800;color:#1e3a8a;margin:0}.quiz-container .question-card .word-container .audio-btn{background:#eff6ff;border:2px solid #dbeafe;color:#3b82f6;width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1)}.quiz-container .question-card .word-container .audio-btn:hover{background:#dbeafe;transform:scale(1.05)}.quiz-container .question-card .word-container .audio-btn:active{transform:scale(.95)}.quiz-container .question-card .hint{color:var(--text-secondary);font-size:1rem}.quiz-container .options-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}@media(max-width:500px){.quiz-container .options-grid{grid-template-columns:1fr}}.quiz-container .option-btn{background:var(--card-bg);border:2px solid var(--border-color);padding:1.25rem;border-radius:16px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:space-between;color:var(--text-primary)}.quiz-container .option-btn:hover:not(:disabled){border-color:var(--profile-accent);background:var(--bg-secondary);transform:translateY(-2px)}.quiz-container .option-btn.correct{border-color:#22c55e;background:#f0fdf4;color:#166534}.quiz-container .option-btn.wrong{border-color:#ef4444;background:#fef2f2;color:#991b1b}.quiz-container .option-btn.disabled{opacity:.6}.quiz-container .quiz-body{flex:1;display:flex;flex-direction:column}.quiz-container .quiz-body .quiz-footer{margin-top:auto;padding-top:2rem;min-height:100px}.quiz-container .navigation-buttons{display:flex;gap:1.5rem;width:100%}.quiz-container .navigation-buttons .back-btn,.quiz-container .navigation-buttons .next-btn{flex:1;padding:1.1rem;border-radius:16px;font-weight:700;font-size:1.1rem;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:.5rem}.quiz-container .navigation-buttons .back-btn{background:#fff;color:var(--text-primary);border:2px solid var(--border-color)}.quiz-container .navigation-buttons .back-btn:hover:not(:disabled){border-color:var(--profile-accent);background:var(--bg-secondary);transform:translateY(-2px)}.quiz-container .navigation-buttons .back-btn:disabled{opacity:.5;cursor:not-allowed}.quiz-container .navigation-buttons .next-btn{background:#3b82f6;color:#fff;border:none;box-shadow:0 4px 12px #3b82f64d}.quiz-container .navigation-buttons .next-btn:hover:not(:disabled){background:#2563eb;transform:translateY(-2px)}.quiz-container .navigation-buttons .next-btn:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none;background:var(--bg-secondary);color:var(--text-secondary);border:1px solid var(--border-color)}.quiz-container .results-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:2rem}.quiz-container .results-screen .result-icon{font-size:5rem;color:var(--profile-accent)}.quiz-container .results-screen .score-display .big-score{font-size:5rem;font-weight:800;color:var(--text-primary)}.quiz-container .results-screen .score-display .out-of{font-size:2rem;color:var(--text-secondary)}.quiz-container .results-screen .finish-btn{background:var(--profile-primary);color:#fff;border:none;padding:1rem 3rem;border-radius:16px;font-weight:700;cursor:pointer}.listen-spell-container{padding:2rem;max-width:900px;margin:0 auto;min-height:80vh;display:flex;flex-direction:column;gap:2rem}.listen-spell-container .spell-header{display:flex;justify-content:space-between;align-items:center}.listen-spell-container .spell-header .exit-btn{background:none;border:none;display:flex;align-items:center;gap:.5rem;color:var(--text-secondary);font-weight:600;cursor:pointer}.listen-spell-container .spell-header .progress{font-weight:600;color:var(--text-secondary);background:var(--bg-secondary);padding:.5rem 1rem;border-radius:12px}.listen-spell-container .spell-body{display:flex;flex-direction:column;gap:2rem}.listen-spell-container .spell-body .spell-navigation-wrapper{display:flex;align-items:center;gap:2rem;width:100%}.listen-spell-container .spell-body .spell-navigation-wrapper .side-nav-btn{background:#fff;border:3px solid #64748b;color:#1e293b;width:68px;height:68px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);flex-shrink:0;box-shadow:0 4px 15px #0000001a}.listen-spell-container .spell-body .spell-navigation-wrapper .side-nav-btn svg{stroke-width:3px}.listen-spell-container .spell-body .spell-navigation-wrapper .side-nav-btn:hover:not(:disabled){border-color:#1e3a8a;color:#1e3a8a;transform:scale(1.1);box-shadow:0 8px 25px #1e3a8a26}.listen-spell-container .spell-body .spell-navigation-wrapper .side-nav-btn:disabled{opacity:.1;cursor:not-allowed;box-shadow:none}.listen-spell-container .spell-body .spell-navigation-wrapper .side-nav-btn.next:not(:disabled){background:#3b82f6;color:#fff;border:none;box-shadow:0 4px 15px #3b82f64d}.listen-spell-container .spell-body .spell-navigation-wrapper .side-nav-btn.next:not(:disabled):hover{background:#2563eb;box-shadow:0 8px 25px #3b82f666}.listen-spell-container .spell-body .spell-navigation-wrapper .spell-card-content{flex:1;display:flex;flex-direction:column;gap:2rem;min-width:0}.listen-spell-container .spell-card{background:var(--card-bg);padding:4rem 2rem;border-radius:24px;text-align:center;border:2px solid var(--border-color);box-shadow:0 15px 40px #0000000d;display:flex;flex-direction:column;align-items:center;gap:2rem}.listen-spell-container .spell-card .audio-btn{width:88px;height:88px;border-radius:50%;background:#3b82f6;color:#fff;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;box-shadow:0 10px 25px #3b82f64d}.listen-spell-container .spell-card .audio-btn svg{display:block;stroke-width:2.5}.listen-spell-container .spell-card .audio-btn:hover{transform:scale(1.08);box-shadow:0 15px 30px #3b82f666}.listen-spell-container .spell-card .vietnamese-hint{font-size:1.75rem;font-weight:700;color:var(--text-primary);margin:0}.listen-spell-container .spell-card .instruction{color:var(--text-secondary);font-size:1rem;margin:0}.listen-spell-container .spell-form{display:flex;flex-direction:column;gap:2rem;width:100%;max-width:600px;margin:0 auto}.listen-spell-container .spell-form input{width:100%;padding:1.5rem;border-radius:20px;border:2px solid var(--border-color);font-size:1.75rem;font-weight:700;text-align:center;background:var(--bg-secondary);color:var(--text-primary);transition:all .2s;box-shadow:inset 0 2px 4px #00000005}.listen-spell-container .spell-form input:focus{outline:none;border-color:var(--profile-primary);background:var(--card-bg);box-shadow:0 0 0 4px rgba(var(--profile-primary-rgb),.1)}.listen-spell-container .spell-form input.correct{border-color:#22c55e;color:#166534;background:#f0fdf4}.listen-spell-container .spell-form input.wrong{border-color:#ef4444;color:#991b1b;background:#fef2f2}.listen-spell-container .spell-form .form-actions{display:flex;gap:1.5rem;justify-content:center}.listen-spell-container .spell-form .form-actions .submit-btn,.listen-spell-container .spell-form .form-actions .skip-btn{padding:1.25rem 3rem;border-radius:18px;font-weight:800;font-size:1.2rem;cursor:pointer;transition:all .2s;min-width:160px;display:flex;align-items:center;justify-content:center;background:#1e3a8a;color:#fff;border:none;box-shadow:0 6px 15px #1e3a8a33}.listen-spell-container .spell-form .form-actions .submit-btn:hover:not(:disabled),.listen-spell-container .spell-form .form-actions .skip-btn:hover:not(:disabled){background:#1e40af;transform:translateY(-2px);box-shadow:0 8px 25px #1e3a8a4d}.listen-spell-container .spell-form .form-actions .submit-btn:disabled,.listen-spell-container .spell-form .form-actions .skip-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.listen-spell-container .spell-form .feedback-section{display:flex;flex-direction:column;align-items:center;gap:1rem;animation:slideUp .3s cubic-bezier(.4,0,.2,1);padding:2rem;border-radius:20px;text-align:center;width:100%}.listen-spell-container .spell-form .feedback-section .msg{font-weight:700;display:flex;align-items:center;gap:.5rem;font-size:1.25rem}.listen-spell-container .spell-form .feedback-section.correct{background:#22c55e}.listen-spell-container .spell-form .feedback-section.correct .msg{color:#fff}.listen-spell-container .spell-form .feedback-section.wrong{background:#ef4444}.listen-spell-container .spell-form .feedback-section.wrong .msg{color:#fff}.listen-spell-container .spell-form .feedback-section.wrong .correct-answer{color:#ffffffe6;font-size:1.1rem}.listen-spell-container .spell-form .feedback-section.wrong .correct-answer strong{color:#fff;text-decoration:underline;text-underline-offset:4px}.listen-spell-container .results-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:2rem}.listen-spell-container .results-screen .result-icon{font-size:7rem;color:#22c55e}.listen-spell-container .results-screen .result-icon.pulse{animation:pulse 2s infinite}.listen-spell-container .results-screen h2{font-size:3rem;margin:0}.listen-spell-container .results-screen p{font-size:1.25rem;color:var(--text-secondary)}.listen-spell-container .results-screen .finish-btn{background:var(--profile-primary);color:#fff;border:none;padding:1.25rem 4rem;border-radius:20px;font-weight:700;font-size:1.25rem;cursor:pointer;transition:all .2s}.listen-spell-container .results-screen .finish-btn:hover{transform:scale(1.05);filter:brightness(1.1)}@keyframes slideUp{0%{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}@media(max-width:768px){.listen-spell-container{padding:1rem}.listen-spell-container .spell-navigation-wrapper{gap:1rem}.listen-spell-container .spell-navigation-wrapper .side-nav-btn{width:48px;height:48px}.listen-spell-container .spell-navigation-wrapper .side-nav-btn svg{width:24px;height:24px}.listen-spell-container .spell-card{padding:2.5rem 1.5rem}.listen-spell-container .spell-card .vietnamese-hint,.listen-spell-container .spell-form 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