:root {
  color-scheme: dark;
  --bg: #0b1220;
  --panel: #121a2b;
  --border: rgba(120, 150, 220, 0.18);
  --text: #e8eef8;
  --muted: #8fa3c7;
  --accent: #5b8cff;
  --accent2: #3dd6c6;
  --danger: #ff6b7a;
  --warn: #f5b942;
  --ok: #4ade80;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  background: radial-gradient(1200px 700px at 10% -20%, #1a2d55, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}
.hidden { display: none !important; }
.screen { min-height: 100vh; }
.muted { color: var(--muted); font-size: 13px; }
.error { color: var(--danger); font-size: 13px; margin-top: 10px; }
.brand { font-size: 22px; font-weight: 700; letter-spacing: .5px; }
.brand.small { font-size: 18px; }
.subtitle { font-size: 12px; color: var(--muted); margin-top: 4px; }

.login-card {
  width: min(400px, 92vw);
  margin: 12vh auto;
  padding: 32px 28px;
  background: rgba(18, 26, 43, 0.92);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0,0,0,.45);
}
.login-card h1 { margin: 14px 0 6px; font-size: 20px; }
.login-card label { display: block; font-size: 12px; color: var(--muted); margin: 14px 0 6px; }
.login-card input {
  width: 100%; padding: 11px 12px; border-radius: 10px;
  border: 1px solid var(--border); background: #0d1526; color: var(--text);
}
.login-card button, .issue-form button, .top-actions button, .filters button {
  border: none; border-radius: 10px; cursor: pointer; font-weight: 600;
}
.login-card button {
  width: 100%; margin-top: 18px; padding: 12px;
  background: linear-gradient(135deg, var(--accent), #6a5cff); color: #fff;
}
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 24px; border-bottom: 1px solid var(--border);
  background: rgba(10, 16, 28, 0.75); backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.top-actions { display: flex; gap: 8px; }
.ghost {
  padding: 8px 14px; background: transparent; color: var(--text);
  border: 1px solid var(--border) !important;
}
.stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px; padding: 18px 24px 0;
}
.stat-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 16px 18px;
}
.stat-card .label { font-size: 12px; color: var(--muted); }
.stat-card .value { font-size: 28px; font-weight: 700; margin-top: 6px; }
.stat-card.online .value { color: var(--ok); }
.stat-card.warn .value { color: var(--warn); }
.stat-card.danger .value { color: var(--danger); }
.panel {
  margin: 16px 24px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden;
}
.panel-head {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap;
  gap: 10px; padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.panel-head h2 { margin: 0; font-size: 16px; }
.badge {
  display: inline-block; min-width: 22px; text-align: center; padding: 2px 8px;
  border-radius: 999px; font-size: 12px; background: rgba(91,140,255,.2); color: var(--accent);
}
.badge.live { background: rgba(74,222,128,.18); color: var(--ok); }
.grid-2 {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
}
@media (max-width: 960px) { .grid-2 { grid-template-columns: 1fr; } }
.issue-form {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px 14px; padding: 16px 18px 18px;
}
.issue-form label { grid-column: span 2; font-size: 12px; color: var(--muted); margin-bottom: -6px; }
.issue-form select, .issue-form input {
  padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border);
  background: #0d1526; color: var(--text);
}
.issue-form button {
  grid-column: span 2; padding: 11px; margin-top: 4px;
  background: linear-gradient(135deg, var(--accent2), var(--accent)); color: #0b1220;
}
.issue-result {
  margin: 0 18px 18px; padding: 12px; background: #0a1220; border-radius: 10px;
  border: 1px solid var(--border); font-size: 12px; white-space: pre-wrap; word-break: break-all;
}
.table-wrap { overflow: auto; }
.table-wrap.tall { max-height: 480px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; border-bottom: 1px solid rgba(255,255,255,.05); text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 600; position: sticky; top: 0; background: var(--panel); }
tr:hover td { background: rgba(255,255,255,.02); }
.tag {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600;
}
.tag.unused { background: rgba(143,163,199,.15); color: var(--muted); }
.tag.active { background: rgba(91,140,255,.18); color: var(--accent); }
.tag.online { background: rgba(74,222,128,.18); color: var(--ok); }
.tag.expired { background: rgba(245,185,66,.15); color: var(--warn); }
.tag.revoked { background: rgba(255,107,122,.15); color: var(--danger); }
.actions { display: flex; flex-wrap: wrap; gap: 6px; }
.actions button {
  padding: 4px 8px; font-size: 11px; border-radius: 8px; border: 1px solid var(--border);
  background: #0d1526; color: var(--text); cursor: pointer;
}
.actions button.danger { color: var(--danger); border-color: rgba(255,107,122,.35); }
.mono { font-family: Consolas, monospace; font-size: 12px; }
.audit-list {
  list-style: none; margin: 0; padding: 12px 18px 18px; max-height: 260px; overflow: auto;
}
.audit-list li {
  padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,.05); font-size: 12px;
}
.filters { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.filters select, .filters input {
  padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border);
  background: #0d1526; color: var(--text);
}