:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-tertiary: #21262d;--bg-input: #0d1117;--text-primary: #e6edf3;--text-secondary: #8b949e;--text-muted: #484f58;--accent: #58a6ff;--accent-hover: #79b8ff;--danger: #f85149;--danger-hover: #ff6e67;--success: #3fb950;--warning: #d29922;--border: #30363d;--border-light: #21262d;--shadow: rgba(0, 0, 0, .3);--radius: 6px;--radius-lg: 10px;--sidebar-width: 280px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;font-size:14px;line-height:1.5;color:var(--text-primary);background:var(--bg-primary);-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;outline:none}input,textarea{font-family:inherit;font-size:inherit;color:var(--text-primary);background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);padding:8px 12px;outline:none;transition:border-color .15s}input:focus,textarea:focus{border-color:var(--accent)}input::placeholder,textarea::placeholder{color:var(--text-muted)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:8px 16px;border-radius:var(--radius);font-weight:500;transition:background-color .15s,opacity .15s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:var(--danger-hover)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary)}