:root { font-family: system-ui, sans-serif; }
.topbar { display:flex; gap:1rem; align-items:center; padding:.75rem 1rem;
  background:#1f2933; color:#fff; }
.topbar .brand { font-weight:700; }
.topbar .app-switcher { display:flex; gap:.75rem; flex:1; }
.topbar a { color:#9ecbff; text-decoration:none; }
.content { padding:1.5rem; max-width:60rem; margin:0 auto; }
.error { color:#c0392b; }
form label { display:block; margin:.5rem 0; }
.admin-nav { display:flex; gap:1rem; padding:.5rem 0; border-bottom:1px solid #ddd; margin-bottom:1rem; }
.admin-nav a { color:#2563eb; }
.cards { display:flex; gap:1rem; margin:1rem 0; }
.card { background:#f3f4f6; padding:1rem 1.5rem; border-radius:.5rem; }
.card .num { font-size:1.8rem; font-weight:700; display:block; }
table { border-collapse:collapse; width:100%; margin:.5rem 0; }
th, td { text-align:left; padding:.4rem .6rem; border-bottom:1px solid #eee; }
.admin-body h2 { margin-top:1.5rem; }