:root{--background:#f6f8fb;--surface:#fff;--text:#162033;--muted:#65728a;--border:#dbe2ec;--primary:#155eef;--danger:#c83232;--success:#197a46;--warning:#9a5b00}*{box-sizing:border-box}body{background:var(--background);color:var(--text);margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{background:var(--primary);color:#fff;cursor:pointer;border:0;border-radius:8px;padding:10px 14px}.button-link{background:var(--primary);color:#fff;border-radius:8px;align-self:flex-start;padding:10px 14px;display:inline-block}button.secondary{color:var(--primary);background:#eef3ff}button.danger{background:var(--danger)}button:disabled{cursor:not-allowed;opacity:.6}input,textarea{border:1px solid var(--border);border-radius:8px;width:100%;padding:10px 12px}textarea{min-height:220px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.page{min-height:100vh;padding:32px}.app-header{justify-content:space-between;align-items:center;gap:16px;display:flex}.tabs{gap:8px;display:flex}.tab{background:var(--surface);border:1px solid var(--border);color:var(--muted);border-radius:999px;padding:8px 14px}.tab.active{color:var(--primary);background:#eef3ff;border-color:#b9ccff}.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:24px;box-shadow:0 12px 30px #1620330f}.stack{gap:16px;display:grid}.row{justify-content:space-between;align-items:center;gap:12px;display:flex}.grid{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px;display:grid}.list{gap:12px;display:grid}.list-item{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;display:grid}.actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.muted{color:var(--muted)}.error{color:var(--danger)}.alert{border-radius:10px;padding:12px 14px}.alert.error{background:#fff0f0}.alert.success{color:var(--success);background:#e8f7ef}.empty-state{border:1px dashed var(--border);background:#fafcff;border-radius:12px;padding:18px}.badge{color:var(--primary);background:#edf3ff;border-radius:999px;padding:4px 8px;font-size:12px;display:inline-block}.badge.success{color:var(--success);background:#e8f7ef}.badge.danger{color:var(--danger);background:#fff0f0}@media (max-width:720px){.page{padding:16px}.app-header,.row,.list-item{flex-direction:column;grid-template-columns:1fr;align-items:stretch}.tabs{overflow-x:auto}.actions{justify-content:flex-start}}