@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&display=swap");
:root{--bg:#0f141c;--panel:#171e28;--line:#2c3a4c;--text:#e8eef6;--muted:#93a4b8;--ok:#4ecb8d;--warn:#e2b48a}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:14px/1.45 "IBM Plex Sans",system-ui,sans-serif}
a{color:var(--warn)}
.demo-banner{background:#3a2618;color:#f6e4d2;text-align:center;padding:.5rem 1rem;font-size:.75rem;font-weight:700}
.shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
.side{border-right:1px solid var(--line);padding:1rem}
.side h1{font-size:1rem;margin:0 0 .3rem}
.side nav{display:flex;flex-direction:column;gap:.3rem;margin-top:1rem}
.side a,.side button{text-align:left;background:transparent;border:0;color:var(--muted);padding:.5rem .6rem;border-radius:8px;font:inherit;text-decoration:none;cursor:pointer}
.side a[aria-current],.side button[aria-current]{background:#223044;color:#fff}
.main{padding:1.2rem 1.4rem 3rem}
label{display:block;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin: .8rem 0 .3rem}
input,textarea,select{width:100%;max-width:40rem;background:#101720;color:var(--text);border:1px solid var(--line);border-radius:8px;padding:.65rem .7rem;font:inherit}
button.save{margin-top:1rem;background:#1c5c86;border:1px solid #3b84c7;color:#fff;padding:.7rem 1rem;border-radius:8px;font:inherit;font-weight:700;cursor:pointer}
.ok{display:none;margin-top:.8rem;color:var(--ok)}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:1rem}
.note{color:var(--muted);font-size:.85rem}
table{width:100%;border-collapse:collapse}
th,td{border-bottom:1px solid var(--line);padding:.5rem;text-align:left}
@media(max-width:800px){.shell{grid-template-columns:1fr}.grid{grid-template-columns:1fr}}