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.vt-iconbtn{border-radius:var(--radius-pill);background:var(--surface-input);width:38px;height:38px;color:var(--text-primary);cursor:pointer;transition:background var(--motion-fast) ease;border:none;place-items:center;display:inline-grid}#words-trainer-app .vt-iconbtn:hover{background:var(--cta-cream-hover)}#words-trainer-app .vt-linkbtn{color:var(--color-amber);font:600 14px var(--font-sans);cursor:pointer;background:0 0;border:none;padding:0}#words-trainer-app .vt-linkbtn:hover{text-decoration:underline}#words-trainer-app .vt-field{background:var(--surface-input);border:1px solid var(--surface-divider);border-radius:var(--radius-md);width:100%;min-height:48px;font:400 16px var(--font-sans);color:var(--text-primary);padding:13px 15px}#words-trainer-app .vt-field::placeholder{color:var(--text-muted)}#words-trainer-app .vt-field:focus{border:2px solid var(--color-amber);background:var(--surface-card);outline:none}#words-trainer-app 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.vt-recap{grid-template-columns:repeat(4,1fr);gap:6px}#words-trainer-app .vt-recap>div{padding:10px 4px}#words-trainer-app .vt-recap-v{font-size:15px}#words-trainer-app .vt-recap-l{font-size:10px}#words-trainer-app .vt-convert{margin-top:22px;padding:20px}#words-trainer-app .vt-convert-h{font-size:19px}#words-trainer-app .vt-convert-register{padding:18px 0 0}#words-trainer-app .vt-convert-register .vt-convert-h{font-size:19px}#words-trainer-app .vt-account-lb{display:none}#words-trainer-app .vt-topline{margin-bottom:12px}}#words-trainer-app .vt-focus{z-index:auto;background:0 0;min-height:calc(100vh - 200px);animation:none;position:static;inset:auto}#words-trainer-app .vt-focus-bar{box-sizing:border-box;background:0 0;border-bottom:none;width:100%;max-width:628px;margin:0 auto;position:static}#words-trainer-app .vt-focus-body{overflow:visible}@media(max-width:767px){#words-trainer-app .vt-focus{min-height:calc(100vh - 170px)}}@keyframes 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.vt-shimmer:after{content:"";background:linear-gradient(90deg,#0000,#fff9,#0000);animation:1.5s ease-in-out infinite vt-shimmer;position:absolute;inset:0;transform:translate(-100%)}@keyframes vt-shimmer{to{transform:translate(100%)}}@media(prefers-reduced-motion:reduce){#words-trainer-app .vt-shimmer:after{animation:none}}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}@property --tw-scroll-snap-strictness{syntax:"*";inherits:false;initial-value:proximity}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-gradient-position{syntax:"*";inherits:false}@property --tw-gradient-from{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-via{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-to{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-stops{syntax:"*";inherits:false}@property --tw-gradient-via-stops{syntax:"*";inherits:false}@property --tw-gradient-from-position{syntax:"<length-percentage>";inherits:false;initial-value:0%}@property --tw-gradient-via-position{syntax:"<length-percentage>";inherits:false;initial-value:50%}@property --tw-gradient-to-position{syntax:"<length-percentage>";inherits:false;initial-value:100%}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}@property --tw-scale-x{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-y{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-z{syntax:"*";inherits:false;initial-value:1}@keyframes spin{to{transform:rotate(360deg)}}:root{--drag-primary: #ff6b6b;--drag-primary-light: #ff8787;--drag-secondary: #ffd93d;--drag-success: #51cf66;--drag-success-light: #69db7c;--drag-error: #ff6b6b;--drag-error-light: #ff8787;--drag-bg-gradient: linear-gradient(135deg, #fff5f5 0%, #fff9f0 100%);--drag-surface: rgba(255, 255, 255, .8);--drag-surface-elevated: rgba(255, 255, 255, .95);--drag-font-display: "Outfit", sans-serif;--drag-font-body: "DM Sans", sans-serif;--drag-shadow-sm: 0 2px 8px rgba(255, 107, 107, .08);--drag-shadow-md: 0 4px 20px rgba(255, 107, 107, .12);--drag-shadow-lg: 0 8px 32px rgba(255, 107, 107, .16);--drag-shadow-hover: 0 6px 24px rgba(255, 107, 107, .2)}.exercise-letter-drag-drop{display:flex;flex-direction:column;gap:1rem;width:100%;padding:1rem;background:var(--drag-bg-gradient);border-radius:24px;position:relative;animation:slideInScale .5s cubic-bezier(.34,1.56,.64,1)}@keyframes slideInScale{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.exercise-letter-drag-drop-image-container{display:flex;justify-content:center;align-items:center;background:var(--drag-surface);border-radius:20px;padding:.75rem;box-shadow:var(--drag-shadow-sm);backdrop-filter:blur(10px);animation:fadeInScale .6s ease-out .2s both}@keyframes fadeInScale{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.exercise-letter-drag-drop-image{max-width:100%;max-height:100px;object-fit:contain;border-radius:12px;filter:drop-shadow(0 4px 12px rgba(0,0,0,.08))}.exercise-letter-drag-drop-translation{padding:1rem;text-align:center;font-family:var(--drag-font-body);font-size:1.125rem;font-weight:600;color:#4a5568;background:var(--drag-surface);border-radius:16px;box-shadow:var(--drag-shadow-sm)}.exercise-letter-drag-drop-image-placeholder{font-size:4rem;opacity:.3}.exercise-letter-drag-drop-error{text-align:center;font-family:var(--drag-font-body);font-size:.95rem;font-weight:600;color:var(--drag-error);padding:.75rem 1.5rem;background:#ff6b6b1a;border-radius:12px;animation:shake .5s ease-in-out,fadeIn .3s ease-out}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-8px)}75%{transform:translate(8px)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.exercise-letter-drag-drop-placeholders{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center;padding:1.5rem;background:var(--drag-surface-elevated);border-radius:16px;box-shadow:var(--drag-shadow-sm);animation:fadeInUp .6s ease-out .3s both}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.exercise-letter-drag-drop-placeholder{position:relative;width:60px;height:70px;background:linear-gradient(135deg,#fff,#fafafa);border:2px dashed #cbd5e0;border-radius:12px;display:flex;align-items:center;justify-content:center;transition:all .3s cubic-bezier(.34,1.56,.64,1);animation:staggerFadeIn .4s ease-out both;animation-delay:calc(var(--index, 0) * .05s)}.exercise-letter-drag-drop-placeholder:nth-child(1){--index: 0}.exercise-letter-drag-drop-placeholder:nth-child(2){--index: 1}.exercise-letter-drag-drop-placeholder:nth-child(3){--index: 2}.exercise-letter-drag-drop-placeholder:nth-child(4){--index: 3}.exercise-letter-drag-drop-placeholder:nth-child(5){--index: 4}.exercise-letter-drag-drop-placeholder:nth-child(6){--index: 5}.exercise-letter-drag-drop-placeholder:nth-child(7){--index: 6}.exercise-letter-drag-drop-placeholder:nth-child(8){--index: 7}@keyframes staggerFadeIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.exercise-letter-drag-drop-placeholder.filled{border-color:transparent;background:transparent}.exercise-letter-drag-drop-placeholder.correct{animation:successPulse .6s ease-out}@keyframes successPulse{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}.exercise-letter-drag-drop-placeholder.incorrect{animation:errorShake .5s ease-in-out}@keyframes errorShake{0%,to{transform:translate(0) rotate(0)}25%{transform:translate(-4px) rotate(-2deg)}50%{transform:translate(4px) rotate(2deg)}75%{transform:translate(-4px) rotate(-1deg)}}.exercise-letter-drag-drop-placeholder-number{font-family:var(--drag-font-display);font-size:1.25rem;font-weight:600;color:#a0aec0}.exercise-letter-drag-drop-draggable{width:60px;height:70px;display:flex;align-items:center;justify-content:center;font-family:var(--drag-font-display);font-size:1.75rem;font-weight:700;color:#2d3748;background:linear-gradient(135deg,#fff,#fff5f5);border:2px solid #ffd93d;border-radius:12px;cursor:grab;user-select:none;box-shadow:var(--drag-shadow-md);transition:all .3s cubic-bezier(.34,1.56,.64,1);position:relative}.exercise-letter-drag-drop-draggable:hover{transform:translateY(-4px) 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errorWiggle{0%,to{transform:rotate(0)}25%{transform:rotate(-3deg)}50%{transform:rotate(3deg)}75%{transform:rotate(-2deg)}}.exercise-letter-drag-drop-items{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center;padding:1.5rem;background:#fff9;border-radius:16px;border:2px dashed rgba(255,107,107,.2);min-height:100px;animation:fadeInUp .6s ease-out .4s both}@media(max-width:640px){.exercise-letter-drag-drop{padding:.75rem;gap:.75rem}.exercise-letter-drag-drop-image-container{min-height:80px;padding:.5rem}.exercise-letter-drag-drop-image{max-height:80px}.exercise-letter-drag-drop-placeholder,.exercise-letter-drag-drop-draggable{width:44px;height:52px;font-size:1.25rem}.exercise-letter-drag-drop-placeholders,.exercise-letter-drag-drop-items{padding:.75rem;gap:.5rem}.exercise-letter-drag-drop-items{min-height:70px}.exercise-letter-drag-drop-placeholder-number{font-size:.9rem}}@media(hover:none)and 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0}.exercise-phase-content{width:100%}.exercise-phase-loading{display:flex;align-items:center;justify-content:center;min-height:400px;font-size:18px;color:#666}.exercise-phase-at-risk-badge{width:100%;display:flex;justify-content:center}.session-start{display:flex;flex-direction:column;align-items:center;width:100%;max-width:600px;margin:0 auto;padding:32px 24px;gap:24px}.session-start-header{text-align:center}.session-start-title{font-size:32px;font-weight:700;color:#333;margin:0 0 8px}.session-start-subtitle{font-size:18px;color:#666;margin:0}.session-start-blocked{display:flex;flex-direction:column;align-items:center;padding:40px 32px;background:#ffebee;border-radius:16px;border:3px solid #f44336;text-align:center;gap:16px}.session-start-blocked-icon{font-size:72px}.session-start-blocked-title{font-size:24px;font-weight:700;color:#c62828;margin:0}.session-start-blocked-message{font-size:18px;color:#666;margin:0;line-height:1.5}.session-start-info{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:16px;width:100%}.session-start-stat{display:flex;flex-direction:column;align-items:center;padding:20px 16px;background:#fff;border-radius:12px;border:2px solid #e0e0e0;gap:8px}.session-start-stat.highlight{background:#f0f7ff;border-color:#4a90e2}.session-start-stat-value{font-size:36px;font-weight:700;color:#333}.session-start-stat.highlight .session-start-stat-value{color:#4a90e2}.session-start-stat-label{font-size:14px;color:#666;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.session-start-warnings{display:flex;flex-direction:column;gap:12px;width:100%}.session-start-warning{display:flex;align-items:flex-start;gap:12px;padding:16px;border-radius:12px;border:2px solid}.session-start-warning.info{background:#f0f7ff;border-color:#4a90e2}.session-start-warning.at-risk{background:#fff3e0;border-color:#ff9800}.session-start-warning.danger{background:#ffebee;border-color:#f44336}.session-start-warning-icon{font-size:24px;flex-shrink:0}.session-start-warning-content{flex:1}.session-start-warning-content strong{display:block;font-size:16px;font-weight:700;margin-bottom:4px;color:#333}.session-start-warning-content p{font-size:14px;color:#666;margin:0}.session-start-actions{display:flex;flex-direction:column;gap:12px;width:100%;margin-top:8px}.session-start-button{padding:14px 32px;font-size:18px;font-weight:600;border-radius:12px;cursor:pointer;transition:all .2s ease;border:2px solid transparent}.session-start-button.primary{color:#fff;background:#4a90e2;border-color:#4a90e2}.session-start-button.primary:hover{background:#357abd;border-color:#357abd;transform:translateY(-2px);box-shadow:0 4px 12px #4a90e24d}.session-start-button.secondary{color:#666;background:#fff;border-color:#ddd}.session-start-button.secondary:hover{border-color:#999;background:#f5f5f5}.session-start-button.ghost{color:#999;background:transparent;border-color:transparent}.session-start-button.ghost:hover{color:#666;background:#f5f5f5}.session-start-button:active{transform:translateY(0)}.session-flow{width:100%}.session-flow__loading{display:flex;align-items:center;justify-content:center;flex:1;min-height:200px;font-size:18px;color:#666}.vt-convert-error{margin:10px 0 0;color:var(--semantic-error);font-size:13px;line-height:1.4;text-align:center}#words-trainer-app .vt-session-complete-actions{display:flex;align-items:center;justify-content:space-between;width:100%;gap:24px;padding-top:24px}