:root{--bg:#fafafa;--surface:#fff;--border:#00000014;--border-strong:#00000024;--text:#141414;--text-muted:#6b6b6b;--accent:#059669;--accent-hover:#047857;--danger:#b00020;--danger-bg:#fdecef;--mono:ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica Neue,Arial,sans-serif}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0}.app{z-index:20;background:var(--bg);flex-direction:column;display:flex;position:fixed;inset:0}.app-header{border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);z-index:2;background:#ffffffeb;align-items:center;gap:14px;padding:11px 16px;display:flex}.brand{align-items:baseline;gap:10px;min-width:0;display:flex}.brand-mark{color:var(--text);letter-spacing:-.01em;white-space:nowrap;align-items:center;gap:8px;font-size:14px;font-weight:650;text-decoration:none;display:inline-flex}.brand-context{color:#c9c9c9;font-weight:400}.brand-tagline{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:12.5px;overflow:hidden}.spacer{flex:auto}.actions{flex:none;align-items:center;gap:8px;display:flex}.action-group{align-items:center;gap:8px;display:flex}.action-group+.action-group{border-left:1px solid var(--border);margin-left:2px;padding-left:10px}.filename{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;max-width:180px;font-size:12.5px;overflow:hidden}.btn{appearance:none;font-family:var(--mono);color:var(--text);background:var(--surface);border:1px solid var(--border-strong);cursor:pointer;white-space:nowrap;border-radius:5px;align-items:center;gap:6px;padding:7px 11px;font-size:11px;font-weight:400;line-height:1;transition:background .14s,border-color .14s,color .14s;display:inline-flex}.btn:hover{background:var(--bg)}.btn:focus-visible{outline:1px solid var(--text);outline-offset:2px}.btn-primary{color:#fff;background:var(--text);border-color:var(--text)}.btn-primary:hover{background:#333;border-color:#333}.btn-ghost{color:var(--text-muted);background:0 0;border-color:#0000}.btn-ghost:hover{background:var(--bg);color:var(--text)}.btn:disabled{opacity:.5;cursor:default}.btn:disabled:hover{background:var(--surface)}.github-link{width:32px;height:32px;color:var(--text-muted);border-radius:5px;justify-content:center;align-items:center;transition:background .14s,color .14s;display:inline-flex}.github-link:hover{background:var(--bg);color:var(--text)}.app-body{flex-direction:column;flex:auto;min-height:0;display:flex;position:relative}.editor-host{flex:auto;min-width:0;min-height:0;display:flex;position:relative}.app-body.drag .editor-host{outline:2px dashed var(--accent);outline-offset:-3px}.overlay{z-index:1;background:var(--bg);place-items:center;display:grid;position:absolute;inset:0}.error-banner{color:var(--danger);background:var(--danger-bg);border-bottom:1px solid #f3c7cf;align-items:center;gap:12px;padding:8px 16px;font-size:13px;display:flex}.error-banner .spacer{flex:1}.error-dismiss{color:var(--danger);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 6px;font-size:16px;line-height:1}.error-dismiss:hover{background:#b000201a}.empty{padding:32px}.dropzone{text-align:center;background:var(--surface);border:1px solid var(--border);border-radius:6px;width:min(460px,100%);padding:42px 36px;transition:border-color .14s,background .14s}.dropzone.drag{border-color:var(--accent);background:#f4fbf8}.dropzone-title{letter-spacing:-.02em;margin:0 0 8px;font-size:20px;font-weight:650}.dropzone-sub{color:var(--text-muted);margin:0 0 22px;font-size:13.5px;line-height:1.5}.dropzone-actions{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.busy{color:var(--text-muted);font-size:13.5px}@media (max-width:720px){.brand-tagline,.filename{display:none}.app-header{flex-wrap:wrap;gap:8px;padding:8px 10px}.app-header>.spacer,.github-link{display:none}.brand{flex:1}.actions{order:3;width:100%;padding-bottom:2px;overflow-x:auto}.action-group{flex:none}.empty{padding:16px}.dropzone{padding:32px 20px}}