:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--char-correct-color: #28a745;--char-correct-bg-color: #e6ffed;--char-incorrect-color: #dc3545;--char-incorrect-bg-color: #ffebee;--char-neutral-color: #333333}body{margin:0;display:flex;align-items:center;justify-self:center;min-height:100vh}@media (prefers-color-scheme: light){:root{--text-color: #213547;--background-color: #ffffff;--char-correct-color: #155724;--char-correct-bg-color: #d4edda;--char-incorrect-color: #721c24;--char-incorrect-bg-color: #f8d7da;--char-neutral-color: #333333}a:hover{color:#747bff}button{background-color:#f9f9f9}}@media (prefers-color-scheme: dark){:root{--text-color: rgba(255, 255, 255, .87);--background-color: #242424;--char-correct-color: #70db70;--char-correct-bg-color: #2a3b2a;--char-incorrect-color: #ff7f7f;--char-incorrect-bg-color: #4d3232;--char-neutral-color: rgba(255, 255, 255, .6)}}.book-selection{width:95vw;margin:0 auto;padding:20px;text-align:center}.book-selection h1{font-size:2.5rem;margin-bottom:10px;color:var(--text-color)}.subtitle{font-size:1.1rem;color:var(--text-color);opacity:.8;margin-bottom:40px}.books-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:20px;margin-bottom:40px}.book-card{background-color:var(--background-color);border:2px solid transparent;border-radius:12px;padding:20px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0000001a}.book-card:hover{transform:translateY(-2px);box-shadow:0 6px 12px #00000026;border-color:var(--text-color)}.book-card.selected{border-color:var(--char-correct-color);background-color:var(--char-correct-bg-color);transform:translateY(-2px)}.book-cover{width:100%;height:200px;margin-bottom:15px;display:flex;align-items:center;justify-content:center;overflow:hidden;border-radius:8px}.book-cover img{width:100%;height:100%;object-fit:cover;border-radius:8px}.book-info{text-align:left}.book-title{font-size:1.2rem;font-weight:700;margin-bottom:10px;color:var(--text-color)}.progress-container{margin-top:10px}.progress-bar{width:100%;height:8px;background-color:#8080804d;border-radius:4px;overflow:hidden;margin-bottom:8px}.progress-text{font-size:.9rem;color:var(--text-color);opacity:.8;font-weight:500}.loading{display:flex;align-items:center;justify-content:center;padding:40px;font-size:1.1rem;color:var(--text-color);opacity:.8}.error{display:flex;align-items:center;justify-content:center;padding:40px;font-size:1.1rem;color:var(--char-incorrect-color);background-color:var(--char-incorrect-bg-color);border-radius:8px;margin:20px}.typing-game{width:100%;max-width:80ch;margin:0 auto}.progress-section{margin-bottom:20px;padding:15px;background-color:var(--background-color);border:1px solid var(--text-color);border-radius:8px}.progress-bar{width:100%;height:8px;background-color:#8080804d;border-radius:4px;overflow:hidden;margin-bottom:10px}.progress-fill{height:100%;background-color:var(--char-correct-color);transition:width .3s ease;border-radius:4px}.progress-stats{display:flex;justify-content:space-between;font-size:.9rem;color:var(--text-color);opacity:.8}.progress-stats span{font-family:monospace}.typing-game-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px;padding:20px 0;border-bottom:1px solid var(--text-color)}.back-button{background-color:transparent;color:var(--text-color);border:1px solid var(--text-color);padding:8px 16px;border-radius:6px;cursor:pointer;font-size:.9rem;transition:all .3s ease}.back-button:hover{background-color:var(--text-color);color:var(--background-color)}.book-info{text-align:right}.book-info h2{color:var(--text-color);margin:0 0 5px;font-size:1.5rem}.book-info p{color:var(--text-color);margin:0;opacity:.8;font-style:italic}.progress-indicator{color:#4caf50!important;font-weight:500}.loading-progress{display:flex;justify-content:center;align-items:center;height:200px;font-size:1.1rem;color:#666}.styled-input-display{background-color:var(--background-color);color:var(--text-color);max-width:80ch;min-height:200px;max-height:400px;padding:20px;border:1px solid var(--text-color);border-radius:8px;font-family:Courier New,monospace;font-size:18px;white-space:pre-wrap;word-wrap:break-word;cursor:text;line-height:1.6;overflow-y:auto;will-change:contents;contain:layout style;scroll-behavior:smooth}.char-correct{color:var(--char-correct-color);background-color:var(--char-correct-bg-color)}.char-incorrect{color:var(--char-incorrect-color);background-color:var(--char-incorrect-bg-color);text-decoration:underline;text-decoration-color:var(--char-incorrect-color)}.char-neutral{color:var(--text-color);background-color:transparent}.char-last-typed{box-shadow:2px 0 0 0 var(--text-color);animation:blink-animation 1s steps(2,start) infinite}@keyframes blink-animation{to{box-shadow:2px 0 0 0 var(--background-color)}}.user-profile-container{display:flex;justify-content:center;align-items:center;height:100vh;width:100vw;background-color:#f0f2f5;padding:20px}.user-profile-card{background-color:#fff;padding:30px;border-radius:8px;box-shadow:0 4px 8px #0000001a;text-align:center;width:100%}.avatar{width:150px;height:150px;border-radius:50%;object-fit:cover;margin-bottom:20px;border:3px solid #ddd}.user-profile-card h2{margin-bottom:10px;color:#333}.user-profile-card p{color:#666;font-size:1em;line-height:1.6;margin-bottom:20px}.logout-button{background-color:#dc3545;color:#fff;border:none;padding:10px 20px;border-radius:5px;cursor:pointer;font-size:1em;transition:background-color .3s ease}.logout-button:hover{background-color:#c82333}.user-profile-icon-container{position:fixed;top:20px;right:20px;cursor:pointer;z-index:1000}.profile-icon{width:40px;height:40px;border-radius:50%;object-fit:cover;border:2px solid #fff;box-shadow:0 2px 4px #0003}.back-button{position:absolute;top:20px;left:20px;padding:10px 15px;background-color:#007bff;color:#fff;border:none;border-radius:5px;cursor:pointer;font-size:1em;z-index:1000}.back-button:hover{background-color:#0056b3}:root{--auth-bg-color: #1a1a1a;--auth-text-color: #ffffff;--auth-border-color: #333;--auth-button-bg: #646cff;--auth-button-hover-bg: #747bff;--auth-error-color: #ff4444}.auth-container{display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px}.auth-form{background-color:var(--auth-bg-color);padding:2rem;border-radius:8px;width:100%;max-width:400px}.auth-form h1{text-align:center;color:var(--auth-text-color);margin-bottom:2rem}.auth-form input{width:100%;padding:.75rem;margin-bottom:1rem;border:1px solid var(--auth-border-color);border-radius:4px;background-color:transparent;color:var(--auth-text-color)}.auth-buttons{display:flex;gap:1rem;margin-top:1rem}.auth-buttons button{flex:1;padding:.75rem;border:none;border-radius:4px;background-color:var(--auth-button-bg);color:var(--auth-text-color);cursor:pointer;transition:background-color .2s}.auth-buttons button:hover{background-color:var(--auth-button-hover-bg)}.auth-buttons button:disabled{opacity:.5;cursor:not-allowed}.error{color:var(--auth-error-color);text-align:center;margin-bottom:1rem}