.top-app-bar{background-color:var(--card-bg-color);border-bottom:1px solid var(--border-color);z-index:1000;align-items:center;gap:.5rem;padding:.6rem .8rem;display:flex;position:sticky;top:0}.back-button{color:#333;cursor:pointer;background:0 0;border:none;align-items:center;padding:0;font-size:1.8rem;font-weight:700;display:flex}body.dark-mode .back-button{color:#e0e0e0}.title-section{cursor:pointer;flex-grow:1;align-items:center;gap:.5rem;display:flex}.profile-avatar-small,.app-bar-profile-image{object-fit:cover;border-radius:50%;width:2.5rem;height:2.5rem}.app-bar-title{color:var(--text-color);font-size:1.2rem;font-weight:700}@media (max-width:768px){.top-app-bar{padding:.5rem .6rem}.back-button{font-size:1.5rem}.profile-avatar-small{width:2rem;height:2rem}.app-bar-title{font-size:1rem}}