:root {
  --bg: #14161a;
  --panel: #1d2027;
  --panel2: #242833;
  --border: #333846;
  --text: #e6e8ec;
  --dim: #9aa1ad;
  --accent: #2f81f7;
  --ok: #3fb950;
  --warn: #d29922;
  --err: #f85149;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.6 "Microsoft YaHei", system-ui, sans-serif;
}
body.center { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
a { color: var(--accent); }
.dim { color: var(--dim); }
.small { font-size: 12px; }
.hidden { display: none !important; }
.spacer { flex: 1; }
.inline { display: inline-flex; align-items: center; gap: .4rem; }

header {
  display: flex; align-items: center; gap: .8rem; flex-wrap: wrap;
  padding: .7rem 1rem; background: var(--panel); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
header nav { display: flex; gap: .3rem; flex-wrap: wrap; }
.tab {
  background: transparent; border: 1px solid transparent; color: var(--dim);
  padding: .35rem .8rem; border-radius: 6px; cursor: pointer;
}
.tab:hover { background: var(--panel2); color: var(--text); }
.tab.active { background: var(--accent); color: #fff; font-weight: 600; }

main { padding: 1rem; max-width: 1200px; margin: 0 auto; }
.panel { display: block; }
h1, h2, h3 { margin: .2rem 0 .8rem; }
h2 { font-size: 17px; }
h3 { font-size: 14px; margin-top: 1.2rem; }

.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 1.2rem;
}
.login-card { width: min(420px, 92vw); display: flex; flex-direction: column; gap: .7rem; }

label { display: block; margin: .5rem 0; color: var(--dim); font-size: 13px; }
input, textarea, select {
  width: 100%; margin-top: .25rem; padding: .5rem .6rem;
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; font: inherit;
}
textarea { resize: vertical; font-family: Consolas, monospace; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); }

button {
  padding: .45rem 1rem; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--border); background: var(--panel2); color: var(--text);
  font: inherit;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button.danger { background: var(--err); border-color: var(--err); color: #fff; }
button.ghost { background: transparent; }
button:disabled { opacity: .5; cursor: not-allowed; }

.row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; margin: .7rem 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: .6rem; }
.grow { flex: 1; min-width: 200px; }

.alert { padding: .7rem 1rem; border-radius: 8px; margin: 0 0 .8rem; }
.alert.warn { background: rgba(210, 153, 34, .15); border: 1px solid var(--warn); color: #f0d38a; }
.alert.error { background: rgba(248, 81, 73, .15); border: 1px solid var(--err); color: #ffb3ae; }
.alert.ok { background: rgba(63, 185, 80, .15); border: 1px solid var(--ok); color: #a6e3ae; }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: .2rem .8rem; font-size: 13px; }
.kv b { color: var(--dim); font-weight: 400; }

table { width: 100%; border-collapse: collapse; margin-top: .7rem; font-size: 13px; }
th, td { text-align: left; padding: .35rem .5rem; border-bottom: 1px solid var(--border); }
th { color: var(--dim); font-weight: 400; background: var(--panel2); }
tbody tr:hover { background: var(--panel2); }
td.ok { color: var(--ok); }
td.warn { color: var(--warn); }
td.err { color: var(--err); }

.log {
  background: #0e1014; border: 1px solid var(--border); border-radius: 8px;
  padding: .6rem; margin-top: .7rem; max-height: 240px; overflow: auto;
  font-family: Consolas, monospace; font-size: 12px; white-space: pre-wrap;
  word-break: break-all; color: #cfd4dc;
}
.log.tall { max-height: 420px; }

.qr {
  display: block; width: 220px; height: 220px; margin: .6rem 0;
  background: #fff; padding: 8px; border-radius: 10px;
}

td button { padding: .2rem .5rem; margin-right: .25rem; font-size: 12px; }