:root{--bg:#0b0e11;--panel:#16191d;--border:#2a2f36;--text:#e8eaed;--muted:#8a9099;--accent:#c6f24e;--accent-hover:#d6fa6e;--error:#ff6b6b}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);display:flex;flex-direction:column;height:100vh;overflow:hidden}header{gap:12px;padding:10px 16px;background:var(--panel);border-bottom:1px solid var(--border);flex-shrink:0}header,header h1{display:flex;align-items:center}header h1{font-size:15px;font-weight:600;margin-right:auto;gap:8px}header h1 .logo{color:var(--accent)}button,select{font:inherit;font-size:13px;color:var(--text);background:var(--border);border:1px solid transparent;padding:7px 14px;border-radius:7px;cursor:pointer;transition:background .15s,border-color .15s}button:hover,select:hover{background:#232830}button.primary{background:var(--accent);color:#0b0e11;font-weight:600}button.primary:hover{background:var(--accent-hover)}select{padding:7px 10px}main{min-height:0}.pane,main{flex:1 1;display:flex}.pane{flex-direction:column;min-width:0}.pane-header{padding:8px 14px;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:var(--panel);border-bottom:1px solid var(--border);flex-shrink:0}#editor{flex:1 1;width:100%;resize:none;border:none;outline:none;background:var(--bg);color:var(--text);padding:16px;font-family:SF Mono,JetBrains Mono,Menlo,Consolas,monospace;font-size:14px;line-height:1.6;-moz-tab-size:2;tab-size:2}.divider{width:1px;background:var(--border);flex-shrink:0}#preview-wrap{flex:1 1;overflow:auto;background:radial-gradient(circle at center,rgba(255,255,255,.02) 1px,transparent 0);background-size:20px 20px;padding:24px}#preview,#preview-wrap{display:flex;align-items:center;justify-content:center}#preview{width:100%}#preview svg{max-width:100%;height:auto}#error{margin:16px;padding:12px 16px;background:rgba(243,139,168,.12);border:1px solid var(--error);border-radius:8px;color:var(--error);font-family:SF Mono,Menlo,monospace;font-size:13px;white-space:pre-wrap;align-self:flex-start}.status{font-size:12px;color:var(--muted)}