.theme-toggle-btn{border-radius:var(--radius-xs);background:var(--bg-surface-raised);border:1px solid var(--border-subtle);width:34px;height:34px;color:var(--text-secondary);cursor:pointer;flex-shrink:0;justify-content:center;align-items:center;transition:all .2s cubic-bezier(.16,1,.3,1);display:inline-flex}.theme-toggle-btn:hover{color:var(--text-highlight);border-color:var(--border-medium);background:var(--bg-card-hover);transform:translateY(-1px)}.theme-toggle-icon-placeholder{background:var(--border-subtle);border-radius:50%;width:17px;height:17px}.sun-icon{color:#fbbf24;transition:transform .3s}.theme-toggle-btn:hover .sun-icon{transform:rotate(30deg)}.moon-icon{color:#6366f1;transition:transform .3s}.theme-toggle-btn:hover .moon-icon{transform:rotate(-15deg)}