:root{--bg:#f5f5f7;--fg:#111;--card:#fff;--muted:#666;--line:#ddd;--link:#0b66c3}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--fg)}
body.dark{--bg:#0e0f12;--fg:#f3f4f6;--card:#16181d;--muted:#a8acb3;--line:#2a2d34;--link:#7db7ff}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
.topbar{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:12px 16px;background:#111;color:#fff}
body.dark .topbar{background:#000}
.brand{font-weight:700}
.nav{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.nav a{color:#fff;text-decoration:underline;text-decoration-color:rgba(255,255,255,.35)}
.nav .user{opacity:.9}
.wrap{max-width:980px;margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px}
.grid{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:900px){.grid{grid-template-columns: 2fr 1fr}}
table{width:100%;border-collapse:collapse}
th,td{padding:10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.btn{display:inline-block;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--card);cursor:pointer}
.btn.primary{background:var(--link);border-color:var(--link);color:#fff}
input,textarea,select{width:100%;padding:10px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--fg);font:inherit}
textarea{min-height:180px}
.row{margin:10px 0}
.err{color:#b00020}
.ok{color:#0a7}
.footer{padding:16px;text-align:center;color:var(--muted)}
.small{color:var(--muted);font-size:12px}
code{background:rgba(0,0,0,.06);padding:2px 6px;border-radius:6px}
body.dark code{background:rgba(255,255,255,.08)}