:root{--bg:#fafafa;--fg:#111;--muted:#666;--border:#ddd;--accent:#1f4ed8;--error:#b00020}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;min-height:100vh}main{max-width:480px;margin:0 auto;padding:2rem 1rem}h1{font-size:1.5rem;margin:0 0 1rem}p{line-height:1.5}form{gap:1rem}form,label{display:flex;flex-direction:column}label{gap:.25rem;font-size:.9rem}input,select{padding:.6rem .75rem;border:1px solid var(--border);border-radius:6px;font-size:1rem}button{padding:.7rem 1rem;border:0;border-radius:6px;background:var(--accent);color:white;font-size:1rem;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}.error{color:var(--error)}.error,.muted{font-size:.9rem}.muted{color:var(--muted)}