:root{--color-primary: #52357B;--color-accent: #5459AC;--color-background: #52357B;--color-secondary-background: #648DB3;--color-text-dark: #212121;--color-text-light: #ffffff;--card-shadow: 0 4px 8px rgba(0, 0, 0, .1)}body{font-family:Arial,sans-serif;background-color:var(--color-background);color:var(--color-text-dark);margin:0;padding:0;box-sizing:border-box}#root{max-width:900px;margin:0 auto;padding:20px}h1{color:var(--color-text-light);font-size:2.5rem;text-align:center}button,input[type=text],textarea{padding:12px 20px;border-radius:8px;border:2px solid var(--color-primary);font-size:1.1rem;cursor:pointer;margin:8px 0;transition:background-color .2s,transform .1s}button{background-color:var(--color-accent);color:var(--color-text-light);font-weight:700;border:none}button:hover{background-color:#40448e;transform:translateY(-1px)}.add-book-container{background:#8abeb9;padding:20px;border-radius:12px;box-shadow:var(--card-shadow);margin-bottom:20px}.add-book-container h2{color:var(--color-text-dark);font-size:1.8rem;margin-top:0}.search-input{width:calc(100% - 40px);margin-right:10px;border:2px solid var(--color-primary)}.book-preview{display:flex;gap:20px;margin-top:20px;padding:15px;border:1px dashed var(--color-primary);border-radius:8px}.book-preview-img{width:100px;height:150px;object-fit:cover;border-radius:4px;box-shadow:var(--card-shadow)}.book-info h3{margin-top:0}.summary-textarea{width:100%;box-sizing:border-box}.profile-switcher{background:#8abeb9;padding:10px 20px;border-radius:12px;margin-bottom:20px;text-align:center;border:2px solid var(--color-primary)}.profile-switcher p{margin:0 0 10px;font-weight:700;color:var(--color-text-dark)}.profile-button{margin:5px;background-color:#648db3;border:2px solid #648DB3}.profile-button.active{background-color:var(--color-primary);border-color:var(--color-text-light);transform:scale(1.05)}.library-dashboard{text-align:center;padding:15px;background:#8abeb9;color:var(--color-text-dark);border-radius:12px;margin-bottom:20px;border:2px solid var(--color-primary)}.progress-counter{font-size:1.8rem;font-weight:700;color:var(--color-text-dark)}.book-list-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px;padding:20px 0}.book-card{background:#b7e5cd;border-radius:12px;box-shadow:var(--card-shadow);padding:15px;text-align:center;display:flex;flex-direction:column;align-items:center}.book-card-cover{width:120px;height:180px;object-fit:cover;border-radius:4px;margin-bottom:10px;border:3px solid var(--color-primary)}.book-card-info{margin-bottom:10px}.book-card-info h3,.book-card-info p{margin:4px 0}.card-summary-text{font-size:.9rem;font-style:italic;color:#616161;margin:5px 0}.play-button{background-color:#4caf50}.play-button:hover{background-color:#388e3c}.delete-button{background-color:#f44336;margin-top:auto}.delete-button:hover{background-color:#d32f2f}.record-button{background-color:var(--color-accent)}.record-button.recording{background-color:var(--color-primary);animation:pulse 1s infinite alternate}@keyframes pulse{0%{opacity:1}to{opacity:.7}}.audio-preview{margin-top:10px}.audio-preview audio{width:100%}.read-aloud-button{background-color:var(--color-primary)}.badge-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background-color:#0000004d;z-index:1000;display:flex;justify-content:center;align-items:center}.badge-popup{background:#fff;padding:30px;border-radius:20px;border:5px solid gold;text-align:center;font-size:2rem;color:var(--color-accent);animation:pop-in .3s cubic-bezier(.175,.885,.32,1.275) forwards}@keyframes pop-in{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}button,input,textarea{min-height:48px}@media (max-width: 600px){h1{font-size:2rem}.book-list-grid{grid-template-columns:1fr}.book-preview{flex-direction:column;text-align:center;align-items:center}}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.notification{padding:15px;margin-bottom:20px;border-radius:8px;font-size:1.1rem;text-align:center;font-weight:700;transition:opacity .3s ease-in-out}.notification.success{background-color:#b7e5cd;color:#212121;border:2px solid #4caf50}.notification.error{background-color:#ffcdd2;color:#c62828;border:2px solid #c62828}