:root{--bg:#f5f6f8;--fg:#1d2330;--muted:#6b7385;--card:#fff;--line:#e3e6ec;--brand:#e31f25;--brand-fg:#fff;--ok:#1d7a46;--err:#b3261e;--side:#16202e}
@media (prefers-color-scheme:dark){:root{--bg:#10141b;--fg:#e6e9ef;--muted:#98a1b3;--card:#181e29;--line:#283041;--brand:#ff5a5f;--brand-fg:#1a0506;--ok:#5ecb8c;--err:#ff8a80;--side:#0b0f16}}
*{box-sizing:border-box}
body{margin:0;font:15px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--brand)}code{background:var(--bg);padding:1px 5px;border-radius:4px;font-size:.85em}
.shell{display:flex;min-height:100vh}
.sidebar{position:sticky;top:0;height:100vh;align-self:flex-start;width:240px;background:var(--side);color:#cfd6e4;display:flex;flex-direction:column;padding:20px 12px;flex-shrink:0}
.brand{color:#fff;font-weight:700;font-size:1.1rem;text-decoration:none;padding:0 10px 18px}
.sidebar nav{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:2px}
.sidebar nav a{color:#cfd6e4;text-decoration:none;padding:8px 10px;border-radius:6px}
.sidebar nav a:hover{background:rgba(255,255,255,.07)}.sidebar nav a.active{background:rgba(255,255,255,.14);color:#fff}
.nav-title{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:#7d8aa3;padding:16px 10px 4px}
.sidebar-foot{border-top:1px solid rgba(255,255,255,.1);padding:12px 10px 0;display:flex;justify-content:space-between;align-items:center;font-size:.9rem}
.sidebar-foot a{color:#fff;text-decoration:none}.sidebar-foot .link{color:#9fb0cc}
.content{flex:1;padding:28px 36px;min-width:0;max-width:1200px}
.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.page-head h1{margin:0;font-size:1.5rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:20px;margin-bottom:18px}
.muted{color:var(--muted)}
table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}tr:last-child td{border-bottom:0}
.actions{display:flex;gap:14px;justify-content:flex-end}.actions form{margin:0}
.btn{background:var(--brand);color:var(--brand-fg);border:0;border-radius:6px;padding:9px 16px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer;display:inline-block}
.link{background:none;border:0;color:var(--brand);font:inherit;cursor:pointer;padding:0}.link.danger{color:var(--err)}
.badge{font-size:.75rem;padding:2px 8px;border-radius:99px;background:var(--bg);border:1px solid var(--line);color:var(--muted)}
.badge.on{color:var(--ok);border-color:var(--ok)}.badge.off{color:var(--err);border-color:var(--err)}
.alert{padding:10px 14px;border-radius:8px;margin-bottom:16px;border:1px solid}.alert.ok{color:var(--ok);border-color:var(--ok)}.alert.err{color:var(--err);border-color:var(--err)}
.form{display:flex;flex-direction:column;gap:14px;max-width:640px}
label{display:flex;flex-direction:column;gap:4px;font-weight:600;font-size:.9rem}
label.check{flex-direction:row;align-items:center;gap:8px;font-weight:400}
input:not([type=checkbox]){padding:9px 11px;border:1px solid var(--line);border-radius:6px;font:inherit;background:var(--bg);color:var(--fg)}
fieldset{border:1px solid var(--line);border-radius:8px;padding:10px 14px;display:flex;flex-direction:column;gap:6px}legend{font-weight:600;padding:0 6px}
hr{border:0;border-top:1px solid var(--line);width:100%}
body.auth{display:grid;place-items:center;min-height:100vh}.auth-card{width:min(380px,92vw);display:flex;flex-direction:column;gap:14px}.auth-card h1{margin:0;font-size:1.3rem}
@media (max-width:760px){.shell{flex-direction:column}.sidebar{position:static;height:auto;align-self:stretch;width:auto}.sidebar nav{overflow:visible}.content{padding:18px}}
.row{display:flex;gap:14px}.row>label{flex:1}
.stack{display:flex;flex-direction:column;gap:14px}.qr{display:flex;justify-content:center}.qr svg{width:200px;height:200px;background:#fff;padding:8px;border-radius:8px}.steps{margin:0;padding-left:20px}.codes{columns:2;font-family:ui-monospace,monospace;margin:10px 0;padding-left:20px}