:root {
  --color-primary: #0f172a;
  --color-on-primary: #ffffff;
  --color-secondary: #1e293b;
  --color-accent: #22c55e;
  --color-accent-dim: #15803d;
  --color-background: #020617;
  --color-foreground: #f8fafc;
  --color-muted: #1a1e2f;
  --color-muted-foreground: #94a3b8;
  --color-border: #334155;
  --color-destructive: #ef4444;
  --radius: 10px;
  --font-sans: 'Fira Sans', system-ui, sans-serif;
  --font-mono: 'Fira Code', 'SFMono-Regular', monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-foreground);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

.topbar {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand { font-weight: 600; font-size: 16px; }
.brand-dim { color: var(--color-muted-foreground); font-weight: 400; }
.nav { display: flex; gap: 18px; flex: 1; }
.nav a { color: var(--color-muted-foreground); padding: 6px 2px; border-bottom: 2px solid transparent; }
.nav a.active, .nav a:hover { color: var(--color-foreground); border-bottom-color: var(--color-accent); }
.logout-form { margin: 0; }

.content { max-width: 1080px; margin: 0 auto; padding: 32px 20px 64px; }

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; color: var(--color-foreground); }
.subtitle { color: var(--color-muted-foreground); margin: 0 0 28px; font-size: 13px; }

.grid-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 28px; }
.stat-card {
  background: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
}
.stat-card .num { font-family: var(--font-mono); font-size: 26px; font-weight: 600; }
.stat-card .label { color: var(--color-muted-foreground); font-size: 12px; margin-top: 4px; }
.stat-card.ok .num { color: var(--color-accent); }
.stat-card.fail .num { color: var(--color-destructive); }

.card {
  background: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; color: var(--color-muted-foreground); font-weight: 500; padding: 8px 10px; border-bottom: 1px solid var(--color-border); white-space: nowrap; }
td { padding: 9px 10px; border-bottom: 1px solid var(--color-border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
.mono { font-family: var(--font-mono); }
.muted { color: var(--color-muted-foreground); }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11px; font-weight: 600; letter-spacing: .02em; }
.badge-active { background: rgba(34,197,94,.15); color: var(--color-accent); }
.badge-revoked { background: rgba(239,68,68,.15); color: var(--color-destructive); }
.badge-unbound { background: rgba(148,163,184,.15); color: var(--color-muted-foreground); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-foreground);
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.btn:hover { background: rgba(255,255,255,.05); }
.btn-primary { background: var(--color-accent); border-color: var(--color-accent); color: #04140a; }
.btn-primary:hover { background: var(--color-accent-dim); border-color: var(--color-accent-dim); color: #fff; }
.btn-danger { color: var(--color-destructive); border-color: var(--color-destructive); }
.btn-danger:hover { background: rgba(239,68,68,.12); }
.btn-ghost { border-color: transparent; color: var(--color-muted-foreground); }
.btn-ghost:hover { color: var(--color-foreground); background: rgba(255,255,255,.05); }
.btn-sm { padding: 5px 10px; font-size: 12px; }

input[type=text], input[type=password] {
  width: 100%;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  color: var(--color-foreground);
  border-radius: 8px;
  padding: 10px 12px;
  font-family: var(--font-sans);
  font-size: 14px;
}
input:focus { outline: 2px solid var(--color-accent); outline-offset: 1px; }
label { display: block; font-size: 13px; color: var(--color-muted-foreground); margin-bottom: 6px; }
.field { margin-bottom: 16px; }

.login-wrap { max-width: 360px; margin: 10vh auto 0; }
.login-wrap .card { padding: 28px; }
.error-msg { background: rgba(239,68,68,.12); color: var(--color-destructive); border: 1px solid rgba(239,68,68,.35); border-radius: 8px; padding: 10px 12px; font-size: 13px; margin-bottom: 16px; }
.success-msg { background: rgba(34,197,94,.12); color: var(--color-accent); border: 1px solid rgba(34,197,94,.35); border-radius: 8px; padding: 12px 14px; font-size: 13px; margin-bottom: 20px; }

.row-actions { display: flex; gap: 6px; }
.toolbar { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.new-code-form { display: flex; gap: 8px; align-items: flex-end; }
.new-code-form .field { margin-bottom: 0; min-width: 220px; }

.back-link { color: var(--color-muted-foreground); font-size: 13px; margin-bottom: 16px; display: inline-block; }
.back-link:hover { color: var(--color-foreground); }

.kv { display: grid; grid-template-columns: 160px 1fr; gap: 8px 16px; font-size: 13px; }
.kv .k { color: var(--color-muted-foreground); }

@media (max-width: 640px) {
  .toolbar { flex-direction: column; align-items: stretch; }
  .new-code-form { flex-direction: column; align-items: stretch; }
  table { display: block; overflow-x: auto; white-space: nowrap; }
}