:root{--background:#f6f7f9;--foreground:#17202a;--muted:#667085;--border:#d8dee8;--panel:#ffffff;--accent:#2563eb;--danger:#b42318;--success:#067647;--warning:#b54708}*{box-sizing:border-box}body{margin:0;background:var(--background);color:var(--foreground);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.page{width:min(1280px,calc(100% - 32px));margin:0 auto;padding:28px 0 44px}.topbar{border-bottom:1px solid var(--border);background:var(--panel)}.topbar-inner{width:min(1280px,calc(100% - 32px));min-height:58px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{font-weight:700}.grid{display:grid;grid-gap:16px;gap:16px}.runner-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.card,.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px}.panel{padding:18px}.card{padding:16px}.stack{flex-direction:column;gap:12px}.row,.stack{display:flex}.row{align-items:center;gap:10px;flex-wrap:wrap}.space-between{justify-content:space-between}.muted{color:var(--muted)}.badge{display:inline-flex;align-items:center;min-height:24px;padding:2px 8px;border-radius:999px;border:1px solid var(--border);background:#f9fafb;font-size:13px}.badge.success{border-color:#abefc6;background:#ecfdf3;color:var(--success)}.badge.warning{border-color:#fedf89;background:#fffaeb;color:var(--warning)}.badge.danger{border-color:#fecdca;background:#fef3f2;color:var(--danger)}.button{min-height:36px;padding:8px 12px;border-radius:6px;border:1px solid var(--border);background:#ffffff;color:var(--foreground);cursor:pointer}.button.primary{border-color:var(--accent);background:var(--accent);color:#ffffff}.button.danger{border-color:var(--danger);color:var(--danger)}.button:disabled{opacity:.55;cursor:not-allowed}.input,.select,.textarea{width:100%;min-height:38px;border:1px solid var(--border);border-radius:6px;padding:8px 10px;background:#ffffff}.textarea{min-height:96px;resize:vertical}.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(420px,100%)}.dashboard-grid{display:grid;grid-template-columns:1.2fr .8fr;grid-gap:16px;gap:16px}.files-layout{display:grid;grid-template-columns:280px minmax(0,1fr) 360px;grid-gap:16px;gap:16px;align-items:start}.tree{max-height:70vh;overflow:auto}.tree button{width:100%;text-align:left;padding:6px 8px;border:0;background:transparent;border-radius:6px;cursor:pointer}.tree button.active,.tree button:hover{background:#eef4ff}.code-shell{height:72vh;overflow:hidden}.diff-box,.log-box{white-space:pre-wrap;overflow:auto;max-height:420px;padding:12px;border-radius:6px;background:#111827;color:#e5e7eb;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:13px}@media (max-width:980px){.dashboard-grid,.files-layout{grid-template-columns:1fr}.code-shell{height:54vh}}