: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;--primary-color: #646cff;--card-bg: rgba(255, 255, 255, .1);--card-border: rgba(255, 255, 255, .2);--text-primary: #ffffff;--text-secondary: rgba(255, 255, 255, .7)}body{margin:0;padding:0;min-width:320px;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);color:var(--text-primary);overflow-x:hidden}#root{width:100%;min-height:100vh;margin:0;padding:0;display:flex;justify-content:center;align-items:center}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}h1{font-size:3.2em;line-height:1.1;margin-bottom:2rem;background:-webkit-linear-gradient(315deg,#42d392 25%,#647eff);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.flashcard-container{width:300px;height:450px;perspective:1000px;cursor:pointer;position:relative}.flashcard-inner{position:relative;width:100%;height:100%;text-align:center;transform-style:preserve-3d}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;-webkit-backface-visibility:hidden;backface-visibility:hidden;border-radius:16px;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:30px;box-sizing:border-box;border:none;box-shadow:0 10px 40px #0003;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.flashcard-front{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.flashcard-back{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff;transform:rotateY(180deg)}.card-content h3{font-size:.95rem;text-transform:uppercase;letter-spacing:2px;opacity:.85;margin-bottom:1.5rem;font-weight:600}.card-content p{font-size:1.6rem;font-weight:600;line-height:1.5;word-break:break-word;max-height:280px;overflow-y:auto}.hint-text{position:absolute;bottom:15px;font-size:.75rem;opacity:.7;font-weight:500}.app-container{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;height:100%;min-height:100vh;padding:20px;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:#fff}h1{font-size:2.5rem;margin-bottom:1rem;text-shadow:0 2px 10px rgba(0,0,0,.2)}.card-wrapper{perspective:1000px;margin:2rem 0;display:flex;justify-content:center;align-items:center}.controls{display:flex;gap:1.5rem;align-items:center;margin-top:2rem;flex-wrap:wrap;justify-content:center}.controls button{padding:12px 24px;font-size:1rem;font-weight:600;border:none;border-radius:8px;cursor:pointer;background:#ffffffe6;color:#667eea;transition:all .3s ease;box-shadow:0 4px 15px #0003}.controls button:hover{background:#fff;transform:translateY(-2px);box-shadow:0 6px 20px #0000004d}.controls button:active{transform:translateY(0)}.counter{font-family:Courier New,monospace;font-size:1.2rem;opacity:.95;font-weight:600;background:#fff3;padding:8px 16px;border-radius:6px}.loading{font-size:1.5rem;color:var(--primary-color)}.instructions{margin-top:2rem;opacity:.8;font-size:.9rem;text-align:center}