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#0000004d;display:flex;align-items:center;justify-content:center;padding:40px}.flashcard-front{background:#fff}.flashcard-back{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff;transform:rotateY(180deg)}.flashcard-content{width:100%;display:flex;flex-direction:column;gap:20px;text-align:center}.flashcard-category{font-size:.9rem;font-weight:600;text-transform:uppercase;letter-spacing:1px;opacity:.7}.flashcard-front .flashcard-category{color:#667eea}.flashcard-text{font-size:1.5rem;line-height:1.6;font-weight:500;white-space:pre-wrap;word-wrap:break-word}.flashcard-text img{max-width:100%;height:auto;margin:15px 0;border-radius:8px;box-shadow:0 4px 8px #0000001a}.flashcard-back .flashcard-text img{box-shadow:0 4px 8px #0000004d}.flashcard-text ul{text-align:left;margin:10px auto;max-width:90%}.flashcard-text li{margin:5px 0}.flashcard-text pre{background:#0000000d;padding:15px;border-radius:8px;overflow-x:auto;text-align:left;margin:15px auto;max-width:90%}.flashcard-back 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#0000001a}.nav-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 12px #00000026}.nav-button:active:not(:disabled){transform:translateY(0)}.nav-button:disabled{opacity:.4;cursor:not-allowed}.nav-actions{display:flex;justify-content:center;gap:10px}.action-button{padding:10px 18px;font-size:.9rem;font-weight:600;color:#fff;background:#fff3;border:2px solid white;border-radius:10px;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.action-button:hover{background:#ffffff4d;transform:translateY(-2px)}.action-button:active{transform:translateY(0)}@media(max-width:768px){.action-button{flex:1}}.app{width:100%;animation:fadeIn .5s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.app-header{text-align:center;margin-bottom:40px;display:flex;justify-content:center;align-items:center;gap:20px;flex-wrap:wrap}.app-header h1{color:#fff;font-size:3rem;font-weight:700;margin:0;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.deck-actions{display:flex;gap:10px}.deck-action-button{width:44px;height:44px;font-size:1.5rem;background:#fff3;border:none;border-radius:10px;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:#fff;display:flex;align-items:center;justify-content:center;outline:none}.deck-action-button:hover{background:#ffffff4d;transform:translateY(-2px);box-shadow:0 4px 8px #0003}.deck-action-button:active{transform:translateY(0)}.deck-action-button:focus{outline:none}.app-main{display:flex;flex-direction:column;align-items:center;gap:30px}.loading{color:#fff;font-size:1.5rem;text-align:center;padding:100px 20px}@media(max-width:768px){.app-header{gap:15px;margin-bottom:30px}.app-header h1{font-size:2rem}.deck-action-button{width:40px;height:40px;font-size:1.3rem}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}code{font-family:Courier New,monospace;background-color:#f4f4f4;padding:2px 6px;border-radius:3px;font-size:.9em}#root{width:100%;max-width:1200px}