:root{--bg:#f7f8fb;--card:#fff;--ink:#222;--muted:#777;--primary:#1e88e5}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.4 system-ui,Segoe UI,Roboto}a{color:var(--primary)}.app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:#fff;border-right:1px solid #eee;padding:16px;display:flex;flex-direction:column;gap:16px}.brand a{font-weight:700;font-size:18px;text-decoration:none;color:#111}.nav{display:flex;gap:8px}.logout{margin-top:auto;background:#ef5350;color:#fff;border:none;padding:10px;border-radius:8px;cursor:pointer}.content{padding:24px}h2{margin-top:0}.toolbar{display:flex;gap:8px;margin:12px 0}input,select,button{padding:10px;border-radius:8px;border:1px solid #ddd}button{cursor:pointer;background:var(--primary);color:#fff;border:none}button:disabled{opacity:.6;cursor:default}.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden}.tbl th,.tbl td{padding:10px;border-bottom:1px solid #f0f0f0;text-align:left}.card{background:var(--card);padding:16px;border-radius:12px;box-shadow:0 1px 2px #0000000a}.center{display:grid;place-items:center;min-height:100vh}.error{color:#c62828;margin-top:8px}.form{display:grid;grid-template-columns:1fr;gap:8px;max-width:480px}.hint{margin-top:8px;color:var(--muted)}