:root {
  --bg: #0f1419;
  --bg-soft: #1a2332;
  --panel: #1e2a3a;
  --line: #2d3f55;
  --text: #e7eef7;
  --muted: #8aa0b8;
  --accent: #3d9cf0;
  --accent-hover: #5aadf5;
  --ok: #3ecf8e;
  --warn: #e6b35c;
  --err: #ef6b6b;
  --radius: 10px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1000px 500px at 0% 0%, #1a3550 0%, transparent 55%),
    radial-gradient(800px 400px at 100% 0%, #0f2e28 0%, transparent 50%),
    var(--bg);
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
.wrap { width: min(1200px, calc(100% - 24px)); margin: 0 auto; padding: 28px 0 48px; }
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { width: min(400px, 100%); }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 22px; flex-wrap: wrap; }
.topbar-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.brand { font-size: 1.35rem; font-weight: 700; letter-spacing: 0.02em; }
.muted { color: var(--muted); font-size: 0.92rem; }
.small { font-size: 0.85rem; }
.card {
  background: color-mix(in srgb, var(--panel) 92%, black);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 18px;
}
.card h2 { margin: 0 0 12px; font-size: 1.05rem; }
button, .btn {
  display: inline-block;
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  cursor: pointer;
}
button.secondary, .btn.secondary {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
}
button:disabled { opacity: 0.5; cursor: not-allowed; }
input, select {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
label { display: block; margin-bottom: 12px; }
.alert { padding: 10px 12px; border-radius: 8px; margin: 10px 0; }
.alert.bad { background: color-mix(in srgb, var(--err) 18%, transparent); border: 1px solid color-mix(in srgb, var(--err) 40%, var(--line)); }
.alert.warn { background: color-mix(in srgb, var(--warn) 18%, transparent); border: 1px solid color-mix(in srgb, var(--warn) 40%, var(--line)); }
.pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.8rem;
  border: 1px solid var(--line);
}
.pill.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, var(--line)); }
.pill.bad { color: var(--err); border-color: color-mix(in srgb, var(--err) 40%, var(--line)); }
.pill.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, var(--line)); }
.summary-strip {
  display: flex; flex-wrap: wrap; gap: 16px; align-items: center;
  margin-bottom: 18px; padding: 14px 16px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-soft);
}
.sync-form {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: flex-end;
}
.sync-form label {
  margin: 0;
  min-width: 200px;
}
.sync-form input[type="number"] {
  width: 140px;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px 16px;
  margin-top: 12px;
}
.form-grid label { margin: 0; }
.form-grid .span-2 { grid-column: 1 / -1; }
ol.muted { padding-left: 1.2em; }
.stat { display: flex; flex-direction: column; min-width: 100px; }
.stat-num { font-size: 1.4rem; font-weight: 700; }
.node-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}
.node-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px;
  background: var(--bg);
}
.node-card.is-online { border-color: color-mix(in srgb, var(--ok) 35%, var(--line)); }
.node-card.is-offline { border-color: color-mix(in srgb, var(--err) 35%, var(--line)); }
.node-card-head { display: flex; justify-content: space-between; gap: 8px; margin-bottom: 6px; }
.count-list { margin: 10px 0; padding-left: 1.1em; font-size: 0.9rem; line-height: 1.55; }
.node-card-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.token-mask {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  font-size: 1.15rem; letter-spacing: 0.04em; margin: 8px 0 0;
}
.token-mask code {
  padding: 8px 12px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--bg); font-size: 1rem;
}
.cert-expiring { color: var(--err); font-weight: 600; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tag {
  display: inline-block; padding: 1px 6px; border-radius: 6px;
  border: 1px solid var(--line); font-size: 0.8rem;
}
.status-row { display: flex; flex-wrap: wrap; gap: 8px; }
.actions-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.log-box {
  margin: 0; padding: 12px; border-radius: 8px; border: 1px solid var(--line);
  background: #0a1018; color: #c8d6e5; font-size: 0.8rem; white-space: pre-wrap;
  max-height: 280px; overflow: auto;
}
.ca-pick { display: flex; flex-wrap: wrap; gap: 14px; align-items: flex-end; margin-bottom: 12px; }
.ca-pick label { margin: 0; }
.ca-pick select { width: auto; min-width: 220px; }
.opt-check { display: flex !important; align-items: center; gap: 6px; font-size: 0.9rem; }
.opt-check input { width: auto; margin: 0; }
.pager-bar { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; align-items: center; }
.progress-wrap {
  height: 10px; border-radius: 999px; background: color-mix(in srgb, var(--bg) 70%, var(--line));
  overflow: hidden; border: 1px solid var(--line); margin: 8px 0 14px;
}
.progress-bar { height: 100%; background: var(--ok); }
tr.row-expiring td:nth-child(5) { color: var(--err); }
code { font-size: 0.85em; }
.app-footer {
  text-align: center;
  padding: 8px 12px 28px;
  opacity: 0.75;
}