:root {
  --bg: #0d1419; --panel: #151f26; --panel2: #1c2830; --line: #26343e;
  --text: #e6edf0; --muted: #8fa3ad; --accent: #3ddc97; --accent-ink: #062b1c;
  --amber: #f2b441; --red: #ef6461; --blue: #5aa9e6;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 -apple-system, "Segoe UI", Roboto, "Noto Sans Thai", sans-serif; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }

/* login */
.login-body { min-height: 100vh; display: grid; place-items: center; padding: 16px;
  background: radial-gradient(ellipse at 30% 10%, #173028 0%, var(--bg) 60%); }
.login-card { width: 100%; max-width: 380px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 16px; padding: 32px; display: flex; flex-direction: column; gap: 14px; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.brand { font-size: 22px; font-weight: 700; }
.bolt { color: var(--accent); }
.err { color: var(--red); min-height: 1.5em; margin: 0; }

/* controls */
input, select { background: var(--panel2); color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 9px 11px; font: inherit; min-width: 0; }
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.btn { background: var(--panel2); color: var(--text); border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 13px; font: inherit; font-size: 13.5px; cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.btn.danger { color: var(--red); border-color: #5a2c2c; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

/* layout */
header { display: flex; align-items: center; gap: 16px; padding: 14px 24px; border-bottom: 1px solid var(--line);
  background: var(--panel); position: sticky; top: 0; z-index: 5; flex-wrap: wrap; }
header .brand { font-size: 18px; }
header .spacer { flex: 1; }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav button { background: none; border: 0; color: var(--muted); padding: 8px 12px; border-radius: 8px;
  font: inherit; cursor: pointer; }
nav button.on { background: var(--panel2); color: var(--text); }
main { max-width: 1280px; margin: 0 auto; padding: 24px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.stat b { display: block; font-size: 28px; line-height: 1.2; }
.stat span { color: var(--muted); font-size: 13px; }
.banner { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px;
  margin-bottom: 20px; font-size: 13.5px; }
.banner code { background: var(--panel2); padding: 2px 6px; border-radius: 6px; font-family: var(--mono); }

/* charger cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px;
  display: flex; flex-direction: column; gap: 12px; }
.card-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.card-head h3 { margin: 0; font-size: 17px; font-family: var(--mono); word-break: break-all; }
.pill { font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 99px; background: var(--panel2);
  color: var(--muted); border: 1px solid var(--line); white-space: nowrap; }
.pill.on { color: var(--accent); border-color: #1f5a41; }
.pill.charging { color: var(--blue); border-color: #264a66; }
.pill.warn { color: var(--amber); border-color: #5c4a22; }
.pill.bad { color: var(--red); border-color: #5a2c2c; }
.meta { display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; font-size: 13px; }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; word-break: break-word; }
.conns { display: flex; flex-direction: column; gap: 8px; }
.conn { background: var(--panel2); border-radius: 10px; padding: 10px 12px; display: flex; flex-direction: column; gap: 6px; }
.conn-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.conn-row .grow { flex: 1; }
.session { display: flex; gap: 16px; flex-wrap: wrap; font-size: 13px; }
.session b { font-size: 16px; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* tables */
.tablewrap { overflow-x: auto; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12.5px; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
.toolbar { display: flex; gap: 8px; align-items: center; margin-bottom: 12px; flex-wrap: wrap; }
.toolbar .spacer { flex: 1; }
.raw { font-family: var(--mono); font-size: 12px; white-space: pre-wrap; word-break: break-all; max-width: 720px; }
.dir-in { color: var(--blue); }
.dir-out { color: var(--accent); }

/* settings */
.form { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 20px;
  display: flex; flex-direction: column; gap: 16px; max-width: 720px; }
.form label.row { display: flex; gap: 12px; align-items: flex-start; }
.form label.row input[type=checkbox] { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--accent); }
.form h3 { margin: 0; }

/* dialog + toast */
dialog { background: var(--panel); color: var(--text); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px; width: min(520px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(0, 0, 0, .55); }
dialog form { display: flex; flex-direction: column; gap: 12px; }
dialog label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }
dialog .actions { justify-content: flex-end; }
pre.result { background: var(--panel2); border-radius: 8px; padding: 10px; font-family: var(--mono); font-size: 12px;
  max-height: 320px; overflow: auto; white-space: pre-wrap; word-break: break-all; margin: 0; }
#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--panel2);
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; display: none; z-index: 20; max-width: 90vw; }
.empty { color: var(--muted); padding: 36px; text-align: center; background: var(--panel);
  border: 1px dashed var(--line); border-radius: 14px; }

@media (max-width: 640px) {
  main { padding: 16px; }
  header { padding: 12px 16px; }
  .cards { grid-template-columns: 1fr; }
}