:root {
  --bg: #0f1117;
  --card: #171a23;
  --card2: #1e2230;
  --border: #2a2f3d;
  --text: #e6e9f0;
  --muted: #8b93a7;
  --accent: #4f7cff;
  --accent2: #6ea8ff;
  --danger: #ff5c7a;
  --ok: #34d399;
  --warn: #fbbf24;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.5;
}
.hidden { display: none !important; }

/* auth */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.auth-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 32px; width: 100%; max-width: 380px; }
.auth-card h1 { margin: 0 0 4px; font-size: 22px; }
.sub { color: var(--muted); margin: 0 0 18px; font-size: 13px; }
.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab { flex: 1; padding: 9px; background: transparent; border: 1px solid var(--border); color: var(--muted); border-radius: 8px; cursor: pointer; font-size: 14px; }
.tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
#auth-form { display: flex; flex-direction: column; gap: 10px; }
input, select, textarea {
  padding: 10px 12px; background: var(--card2); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); font-size: 14px; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
.btn { padding: 10px 16px; border-radius: 8px; border: none; cursor: pointer; font-size: 14px; font-weight: 600; }
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent2); }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.danger { background: transparent; border: 1px solid var(--danger); color: var(--danger); }
.btn.small { padding: 6px 10px; font-size: 12px; }
.error { color: var(--danger); font-size: 13px; }

/* app */
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; }
.brand { font-weight: 700; font-size: 16px; }
.top-right { display: flex; align-items: center; gap: 12px; }
.whoami { color: var(--muted); font-size: 14px; }
.content { max-width: 1100px; margin: 0 auto; padding: 24px; display: flex; flex-direction: column; gap: 20px; }

.stats { display: flex; flex-direction: column; gap: 10px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.card h2 { margin: 0 0 16px; font-size: 16px; }
.stat { text-align: center; padding: 18px; }
.stat-num { font-size: 26px; font-weight: 700; }
.stat-num.rate { font-size: 22px; color: var(--accent2); }
.stat-label { color: var(--muted); font-size: 13px; margin-top: 4px; }

.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-bottom: 14px; }
.form-grid label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }

.result { margin-top: 14px; padding: 12px; background: var(--card2); border-radius: 8px; border: 1px solid var(--border); word-break: break-all; }
.result textarea { margin-top: 8px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 12px; }
.tag { padding: 3px 8px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.tag.ok { background: rgba(52,211,153,.15); color: var(--ok); }
.tag.revoked { background: rgba(255,92,122,.15); color: var(--danger); }
.tag.expiring { background: rgba(251,191,36,.15); color: var(--warn); }

.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--card2); border: 1px solid var(--border); padding: 12px 20px; border-radius: 8px; font-size: 14px; box-shadow: 0 8px 24px rgba(0,0,0,.4); }
.toast.err { border-color: var(--danger); color: var(--danger); }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; padding: 20px; z-index: 50; }
.modal-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 24px; width: 100%; max-width: 560px; }
.modal-card h3 { margin: 0 0 4px; }
.modal-card textarea { margin: 12px 0; font-family: ui-monospace, monospace; font-size: 12px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }