:root {
  --background: #0b0e14; --foreground: #e5e9f0;
  --card: #12161f; --sidebar: #0e121a;
  --secondary: #1b2130; --muted-foreground: #94a3b8;
  --border: #232a38; --primary: #6366f1; --primary-foreground: #fff;
  --destructive: #ef4444; --success: #10b981; --warning: #f59e0b; --info: #3b82f6;
  --radius: .625rem; --ease: cubic-bezier(.22, 1, .36, 1);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--background); color: var(--foreground);
  font: 14px/1.5 "Inter", system-ui, sans-serif;
}
h1, h2, h3 { letter-spacing: -.015em; margin: 0; }
a { color: var(--primary); }
svg.i { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.85; stroke-linecap: round; stroke-linejoin: round; flex: none; }

/* Layout */
.app { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--sidebar); border-right: 1px solid var(--border);
  position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; padding: 20px 14px;
}
.logo { font-size: 18px; font-weight: 700; padding: 0 10px; }
.logo span { color: var(--primary); }
.tagline { color: var(--muted-foreground); font-size: 12px; padding: 0 10px 20px; }
.group-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--muted-foreground); padding: 14px 10px 6px; }
.nav button {
  display: flex; align-items: center; gap: 10px; width: 100%; height: 38px; padding: 0 10px;
  background: none; border: 0; border-radius: var(--radius); color: var(--muted-foreground);
  font: inherit; cursor: pointer; transition: background .18s var(--ease), color .18s var(--ease);
}
.nav button:hover { background: var(--secondary); color: var(--foreground); }
.nav button.active { background: var(--secondary); color: var(--primary); }
.side-foot { margin-top: auto; display: flex; align-items: center; gap: 10px; padding: 10px; border-top: 1px solid var(--border); }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--primary); display: grid; place-items: center; font-weight: 700; font-size: 13px; }
.side-foot small { color: var(--muted-foreground); display: block; font-size: 12px; }

main { padding: 28px 32px; min-width: 0; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.topbar h1 { font-size: 20px; font-weight: 600; }
.topbar p { margin: 2px 0 0; color: var(--muted-foreground); }

/* Components */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 20px; }
.card + .card { margin-top: 16px; }
.card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.card-head h2 { font-size: 16px; font-weight: 600; }
.card-head .i { color: var(--primary); }
.card-head .spacer { flex: 1; }
.sub { color: var(--muted-foreground); font-size: 13px; }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
.stat .ibox { width: 32px; height: 32px; border-radius: 8px; background: var(--secondary); display: grid; place-items: center; margin-bottom: 12px; }
.stat .val { font-size: 24px; font-weight: 700; }
.stat .lbl { font-size: 12px; color: var(--muted-foreground); }

.btn {
  display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 16px; border-radius: var(--radius);
  font: 600 14px "Inter", system-ui, sans-serif; cursor: pointer; border: 1px solid transparent;
  background: var(--primary); color: var(--primary-foreground); transition: filter .18s var(--ease), background .18s var(--ease);
}
.btn:hover { filter: brightness(1.1); }
.btn.outline { background: transparent; border-color: var(--border); color: var(--foreground); }
.btn.outline:hover { background: var(--secondary); filter: none; }
.btn.danger { background: transparent; border-color: color-mix(in srgb, var(--destructive) 40%, transparent); color: var(--destructive); }
.btn.sm { height: 30px; padding: 0 10px; font-size: 12px; }
.btn:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

label { display: block; font-size: 13px; font-weight: 500; margin: 0 0 6px; }
input, textarea {
  width: 100%; background: var(--secondary); border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--foreground); font: inherit; padding: 9px 12px;
}
textarea { min-height: 120px; resize: vertical; }
.field { margin-bottom: 14px; }
.hint { font-size: 12px; color: var(--muted-foreground); margin-top: 4px; }

.pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 500; padding: 3px 10px; border-radius: 999px; border: 1px solid; }
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.pill.ok { color: var(--success); background: color-mix(in srgb, var(--success) 10%, transparent); border-color: color-mix(in srgb, var(--success) 30%, transparent); }
.pill.warn { color: var(--warning); background: color-mix(in srgb, var(--warning) 10%, transparent); border-color: color-mix(in srgb, var(--warning) 30%, transparent); }
.pill.bad { color: var(--destructive); background: color-mix(in srgb, var(--destructive) 10%, transparent); border-color: color-mix(in srgb, var(--destructive) 30%, transparent); }
.badge { font-size: 12px; font-weight: 500; padding: 2px 8px; border-radius: 6px; background: color-mix(in srgb, var(--primary) 15%, transparent); color: var(--primary); }

.device { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.qr { background: #fff; padding: 10px; border-radius: 12px; width: 240px; height: 240px; }
.device ol { color: var(--muted-foreground); padding-left: 18px; margin: 8px 0 0; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; font-weight: 500; color: var(--muted-foreground); font-size: 12px; padding: 8px 10px; border-bottom: 1px solid var(--border); }
td { padding: 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
td.msg { max-width: 360px; white-space: pre-wrap; word-break: break-word; }
tr:last-child td { border-bottom: 0; }
.empty { text-align: center; color: var(--muted-foreground); padding: 28px; }

pre { background: var(--background); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; overflow-x: auto; font-size: 12.5px; margin: 8px 0 0; }
code { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; }
.token-box { display: flex; gap: 8px; }
.token-box input { font-family: ui-monospace, Consolas, monospace; }

.toast { position: fixed; bottom: 20px; right: 20px; background: var(--card); border: 1px solid var(--border); border-left: 3px solid var(--primary); padding: 12px 16px; border-radius: var(--radius); opacity: 0; transform: translateY(8px); transition: .2s var(--ease); pointer-events: none; }
.toast.show { opacity: 1; transform: none; }

/* Login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login .card { width: 100%; max-width: 380px; }
.login .logo { padding: 0; margin-bottom: 4px; }
.err { color: var(--destructive); font-size: 13px; min-height: 20px; }

.hidden { display: none !important; }
.menu-btn { display: none; }

@media (max-width: 1100px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 800px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; z-index: 10; width: 260px; transform: translateX(-100%); transition: transform .2s var(--ease); }
  .sidebar.open { transform: none; }
  .menu-btn { display: inline-flex; }
  main { padding: 20px 16px; }
  .grid { grid-template-columns: 1fr; }
  .qr { width: 200px; height: 200px; }
}