.introduction-section p{margin-bottom:1.2em;font-size:1.05em}.introduction-section strong{font-weight:600;color:var(--body-text)}.spinner{display:inline-block;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:var(--header-text);width:1.2em;height:1.2em;animation:spin 1s linear infinite;margin-left:10px}.settings-row{height:1.1lh;vertical-align:middle;display:flex;align-items:center;gap:10px}@keyframes spin{to{transform:rotate(360deg)}}.error-box{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb;padding:15px;border-radius:6px;margin-top:20px;font-size:1em}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}