:root,html.theme-light{--color-bg: #ffffff;--color-bg-secondary: #f5f5f5;--color-text: #1a1a1a;--color-text-secondary: #666666;--color-border: #e2e2e2;--color-primary: #2563eb;--color-error: #c0392b}html.theme-dark{--color-bg: #121212;--color-bg-secondary: #1e1e1e;--color-text: #e8e8e8;--color-text-secondary: #aaaaaa;--color-border: #333333;--color-primary: #60a5fa;--color-error: #f87171}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;background-color:var(--color-bg);color:var(--color-text);font-family:system-ui,-apple-system,sans-serif;transition:background-color .2s ease,color .2s ease}button{background:none;border:1px solid var(--color-border);padding:.375rem .75rem;border-radius:4px;cursor:pointer;color:var(--color-text)}button:hover{background-color:var(--color-bg-secondary)}a{color:var(--color-primary)}