.theme-toggle{background:var(--color-surface);border:1px solid var(--color-border);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;box-shadow:var(--shadow-medium)}.theme-toggle:hover{transform:scale(1.05)}.theme-toggle--floating{position:fixed;bottom:20px;left:20px;z-index:1000}.theme-toggle--inline{position:static}