:root {
  color-scheme: dark;
  --bg: #0d1117;
  --panel: #151b24;
  --panel-soft: #1b2430;
  --border: #2a3544;
  --text: #eef4fb;
  --muted: #9aa9bb;
  --accent: #65d6a1;
  --accent-strong: #36bf84;
  --danger: #ff8d8d;
  --warning: #f5c77a;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(circle at top right, #172333 0, var(--bg) 40rem);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
.shell { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 48px 0 72px; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(28px, 4vw, 42px); letter-spacing: -0.035em; }
h2 { margin-bottom: 0; font-size: 20px; }
.eyebrow { margin-bottom: 6px; color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.muted { color: var(--muted); }
.card { padding: 24px; border: 1px solid var(--border); border-radius: 16px; background: color-mix(in srgb, var(--panel) 94%, transparent); box-shadow: 0 14px 45px rgb(0 0 0 / 15%); }
.auth-card { width: min(430px, 100%); margin: 8vh auto 0; }
.topbar, .section-heading, .topbar-actions, .form-row { display: flex; align-items: center; }
.topbar, .section-heading { justify-content: space-between; gap: 20px; }
.topbar { margin-bottom: 30px; }
.topbar-actions { gap: 14px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 14px; }
.stat { display: flex; flex-direction: column; gap: 8px; }
.stat span { color: var(--muted); font-size: 13px; }
.stat strong { font-size: 30px; letter-spacing: -.04em; }
.grid-two { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr); gap: 14px; margin-bottom: 14px; }
.grid-three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-bottom: 14px; }
.stack { display: flex; flex-direction: column; gap: 14px; margin-top: 22px; }
.form-row { align-items: stretch; gap: 14px; }
.form-row > label { flex: 1; }
label { display: flex; flex-direction: column; gap: 6px; color: var(--muted); font-size: 13px; }
input, select, textarea { width: 100%; border: 1px solid var(--border); border-radius: 9px; background: var(--panel-soft); color: var(--text); padding: 10px 12px; font: inherit; }
textarea { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; resize: vertical; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button { cursor: pointer; border: 0; border-radius: 9px; padding: 10px 14px; font: 700 14px inherit; }
button:disabled { cursor: wait; opacity: .6; }
.primary { color: #062217; background: var(--accent); }
.primary:hover { background: var(--accent-strong); }
.secondary { color: var(--text); border: 1px solid var(--border); background: var(--panel-soft); }
.secondary:hover { border-color: var(--accent); }
.issued-box { margin-top: 20px; }
.notice, .security-note { margin-top: 18px; padding: 12px 14px; border-left: 3px solid var(--warning); background: rgb(245 199 122 / 9%); color: var(--muted); }
.notice strong, .security-note strong { color: var(--warning); }
.security-note p { margin: 6px 0 0; }
.error { margin: 14px 0 0; color: var(--danger); }
.success { margin: 14px 0 0; color: var(--accent); }
.table-heading { margin-bottom: 20px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: 13px 10px; border-top: 1px solid var(--border); text-align: left; vertical-align: middle; }
th { color: var(--muted); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
td { font-size: 14px; }
.key-last4 { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.badge { display: inline-flex; padding: 4px 8px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge-valid { color: #062217; background: var(--accent); }
.badge-expired, .badge-revoked { color: #3b1010; background: var(--danger); }
.badge-activation_required { color: #33240d; background: var(--warning); }
.empty { color: var(--muted); text-align: center; }
@media (max-width: 800px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-two, .grid-three { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 480px) {
  .shell { width: min(100% - 20px, 1180px); padding-top: 24px; }
  .card { padding: 18px; }
  .form-row { align-items: stretch; flex-direction: column; }
}