#root{max-width:1280px;margin:0 auto;padding:2rem;text-align:center;height:100vh;box-sizing:border-box}.app-container{display:flex;height:100%;gap:20px}.sidebar{width:200px;background-color:#f5f5f5;padding:20px;border-radius:8px;text-align:left;display:flex;flex-direction:column;gap:10px;overflow-y:auto}.mode-toggle{display:flex;background-color:#e0e0e0;padding:4px;border-radius:8px;margin-bottom:20px}.mode-btn{flex:1;border:none;padding:8px 4px;font-size:.9rem;font-weight:600;border-radius:6px;cursor:pointer;background-color:transparent;color:#666;transition:all .2s ease}.mode-btn.active{background-color:#fff;color:#646cff;box-shadow:0 2px 4px #0000001a}.unit-item{padding:10px;cursor:pointer;border-radius:4px;transition:background-color .3s}.unit-item:hover{background-color:#e0e0e0}.unit-item.active{background-color:#646cff;color:#fff}.game-area{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;background-color:#fff;border-radius:8px;box-shadow:0 4px 6px #0000001a;padding:40px;position:relative}.intro{text-align:center;animation:fadeIn .5s ease}.intro h2{font-size:2.5rem;color:#333;margin-bottom:20px;background:linear-gradient(135deg,#646cff,#4caf50);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.intro p{font-size:1.2rem;color:#666}.flashcard{width:450px;min-height:280px;background-color:#fff;border:3px solid #e0e0e0;border-radius:16px;display:flex;flex-direction:column;justify-content:center;align-items:center;cursor:pointer;margin-bottom:30px;transition:all .3s ease;box-shadow:0 4px 12px #0000001a;-webkit-user-select:none;user-select:none;padding:30px;position:relative}.flashcard:hover{transform:translateY(-5px);box-shadow:0 8px 20px #00000026}.flashcard.revealed{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border-color:#646cff}.flashcard-content{width:100%;display:flex;flex-direction:column;align-items:center;gap:20px}.flashcard-label{font-size:.85rem;color:#666;font-weight:600;text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}.flashcard-text{font-size:2.5rem;font-weight:600;color:#333;text-align:center;line-height:1.4}.flashcard-text-small{font-size:1.8rem;font-weight:500;color:#333;text-align:center;line-height:1.4}.flashcard-side{display:flex;flex-direction:column;align-items:center;width:100%}.flashcard-divider{width:80%;height:2px;background:linear-gradient(to right,transparent,#646cff,transparent);margin:10px 0}.flashcard-hint{position:absolute;bottom:15px;font-size:.9rem;color:#999;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.5}50%{opacity:1}}.controls{display:flex;gap:30px;margin-top:20px}.btn{padding:14px 32px;font-size:1.15rem;font-weight:600;border:none;border-radius:10px;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 8px #00000026;min-width:140px}.btn:hover{transform:translateY(-2px);box-shadow:0 6px 12px #0003}.btn:active{transform:translateY(0);box-shadow:0 2px 4px #0003}.btn-success{background:linear-gradient(135deg,#4caf50,#45a049);color:#fff}.btn-success:hover{background:linear-gradient(135deg,#45a049,#3d8b40)}.btn-fail{background:linear-gradient(135deg,#f44336,#e53935);color:#fff}.btn-fail:hover{background:linear-gradient(135deg,#e53935,#d32f2f)}.congratulations{text-align:center;display:flex;flex-direction:column;align-items:center;gap:25px;padding:40px;animation:fadeIn .5s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.celebration-icon{font-size:5rem;animation:bounce 1s ease infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}.congratulations h2{color:#4caf50;font-size:2.5rem;margin:0;font-weight:700}.completion-stats{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);padding:25px 40px;border-radius:12px;border:2px solid #646cff}.completion-message{font-size:1.3rem;color:#333;margin:0 0 10px}.completion-message .highlight{color:#646cff;font-size:1.5rem}.completion-unit{font-size:1.1rem;color:#666;margin:0}.completion-actions{display:flex;gap:20px;margin-top:10px}.btn-primary{background:linear-gradient(135deg,#646cff,#5458cf);color:#fff}.btn-primary:hover{background:linear-gradient(135deg,#5458cf,#4347b8)}.btn-secondary{background:linear-gradient(135deg,#6c757d,#5a6268);color:#fff}.btn-secondary:hover{background:linear-gradient(135deg,#5a6268,#495057)}.progress-info{position:absolute;top:20px;left:20px;right:20px;display:flex;flex-direction:column;gap:10px}.progress-stats{display:flex;justify-content:center;align-items:center;gap:15px;font-size:.95rem;color:#555}.stat-item{display:flex;align-items:center;gap:5px}.stat-item strong{color:#646cff;font-size:1.1rem}.stat-divider{color:#ddd;font-weight:300}.progress-bar-container{width:100%;height:8px;background-color:#e0e0e0;border-radius:10px;overflow:hidden;box-shadow:inset 0 1px 3px #0000001a}.progress-bar{height:100%;background:linear-gradient(90deg,#4caf50,#8bc34a);border-radius:10px;transition:width .5s ease;box-shadow:0 0 10px #4caf5066}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}