:root {
  --bg: #f6f7f9; --surface: #fff; --border: #e3e6eb; --text: #1c2230; --muted: #6b7385;
  --primary: #4f46e5; --primary-ink: #fff; --danger: #c0392b; --ok: #1e8e5a; --info: #2563eb;
  --radius: 10px; --sidebar-w: 240px; --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.5; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; } h2 { font-size: 1.1rem; margin: 0 0 .5rem; }
a { color: var(--primary); } code { background: #eef0f4; padding: 1px 5px; border-radius: 4px; }
.muted { color: var(--muted); } .inline { display: inline; margin: 0; }
.brand { font-size: 1.15rem; display: flex; align-items: center; gap: .5rem; margin-bottom: 1.5rem; }
.brand-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--primary); display: inline-block; }
.shell { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-w); background: var(--surface); border-right: 1px solid var(--border); padding: 1.25rem 1rem; position: sticky; top: 0; height: 100vh; }
.nav-link { display: block; padding: .55rem .75rem; border-radius: 8px; color: var(--text); text-decoration: none; margin-bottom: 2px; }
.nav-link:hover { background: var(--bg); } .nav-link.is-active { background: #eceafe; color: var(--primary); font-weight: 600; }
.main { flex: 1; min-width: 0; }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: .6rem 1.5rem; background: var(--surface); border-bottom: 1px solid var(--border); gap: 1rem; }
.topbar-user { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; margin-left: auto; }
.sidebar-toggle { display: none; }
.content { padding: 1.5rem; max-width: 1100px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.25rem; margin-bottom: 1rem; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.page-head h1 { margin: 0; }
.btn { display: inline-block; padding: .5rem .9rem; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); text-decoration: none; cursor: pointer; font: inherit; }
.btn:hover { background: var(--bg); } .btn-primary { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); }
.btn-primary:hover { filter: brightness(.95); background: var(--primary); } .btn-ghost { border-color: transparent; background: transparent; }
.btn-block { width: 100%; } .btn[disabled] { opacity: .6; cursor: not-allowed; }
.field { display: block; margin-bottom: 1rem; } .field > span { display: block; font-weight: 600; margin-bottom: .25rem; font-size: .9rem; }
input[type=text], input[type=email], input[type=password], select { width: 100%; padding: .55rem .7rem; border: 1px solid var(--border); border-radius: 8px; font: inherit; background: #fff; }
input:focus, select:focus, .btn:focus-visible, a:focus-visible { outline: 2px solid var(--primary); outline-offset: 1px; }
.field-error { display: block; color: var(--danger); font-size: .85rem; margin-top: .25rem; }
.check { display: block; margin: .35rem 0; } .actions { display: flex; gap: .5rem; margin-top: 1rem; }
.alert { padding: .65rem .9rem; border-radius: 8px; margin-bottom: 1rem; border: 1px solid; }
.alert-error { background: #fdecea; border-color: #f5c6c0; color: #7a1f14; } .alert-success { background: #e8f6ee; border-color: #bfe3cf; color: #145a37; } .alert-info { background: #e9f0fd; border-color: #c5d6f7; color: #1b3f8f; }
.table-wrap { overflow-x: auto; padding: 0; } .table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: .65rem 1rem; border-bottom: 1px solid var(--border); white-space: nowrap; font-size: .92rem; }
.table th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: .78rem; }
.badge-ok { background: #e8f6ee; color: var(--ok); } .badge-off { background: #f1f2f5; color: var(--muted); }
.perm-group legend { font-weight: 600; padding: 0 .4rem; } .pager { display: flex; align-items: center; gap: 1rem; }
.guest { display: grid; place-items: center; min-height: 100vh; padding: 1rem; }
.guest-card { width: 100%; max-width: 400px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 1.75rem; }
@media (max-width: 820px) {
  .sidebar { position: fixed; left: 0; top: 0; z-index: 20; transform: translateX(-100%); transition: transform .15s; }
  .sidebar.is-open { transform: none; box-shadow: 0 0 0 100vmax rgba(0,0,0,.25); }
  .sidebar-toggle { display: inline-block; } .content { padding: 1rem; }
}