:root {
  --bg: #f6f7f9; --panel: #ffffff; --text: #111827; --muted: #6b7280; --line: #e5e7eb;
  --accent: #2563eb; --accent-text: #ffffff; --good: #15803d; --bad: #dc2626;
  --info-bg: #eff6ff; --info-line: #bfdbfe; --warn-bg: #fffbeb; --warn-line: #fcd34d; --err-bg: #fef2f2; --err-line: #fca5a5;
  --ok-bg: #f0fdf4; --ok-line: #86efac; --radius: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1117; --panel: #161b22; --text: #e6e8eb; --muted: #9aa4b2; --line: #2a313c;
    --accent: #3b82f6; --good: #22c55e; --bad: #f87171;
    --info-bg: #0f1d33; --info-line: #1e3a5f; --warn-bg: #2a2310; --warn-line: #6b5414; --err-bg: #2b1215; --err-line: #7f1d1d;
    --ok-bg: #0f2418; --ok-line: #166534;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
h1 { font-size: 1.7rem; margin: .2em 0 .4em; }
h2 { font-size: 1.25rem; margin: 1.4em 0 .5em; }
h3 { font-size: 1.02rem; margin: 1.1em 0 .4em; }
.muted { color: var(--muted); } .small { font-size: .85rem; }
.good { color: var(--good); } .bad { color: var(--bad); }

.topbar { display: flex; align-items: center; gap: 18px; padding: 10px 20px; background: var(--panel); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--text); text-decoration: none; font-size: 1.05rem; }
.topbar nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.topbar nav a { padding: 6px 12px; border-radius: 8px; color: var(--muted); text-decoration: none; }
.topbar nav a.on, .topbar nav a:hover { background: var(--bg); color: var(--text); }
.who { display: flex; align-items: center; gap: 10px; font-size: .9rem; }
.who form { margin: 0; }

.wrap { max-width: 1400px; margin: 0 auto; padding: 16px 20px 40px; }
.narrow { max-width: 440px; margin: 6vh auto; padding: 0 16px; }
.foot { text-align: center; color: var(--muted); font-size: .8rem; padding: 20px; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin: 12px 0; }
.card.login h1 { font-size: 1.5rem; }
label { display: block; margin: 10px 0; font-size: .9rem; }
label.check { display: flex; gap: 8px; align-items: center; }
.lbl { display: block; font-size: .9rem; margin-top: 10px; }
input, select { width: 100%; padding: 8px 10px; margin-top: 4px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font: inherit; }
input[type=checkbox] { width: auto; margin: 0; }
input[type=range] { padding: 0; accent-color: var(--accent); }
label b { float: right; font-weight: 600; }

.btn { display: inline-block; padding: 8px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--text); font: inherit; cursor: pointer; text-decoration: none; margin: 4px 0; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn.danger { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 4px 10px; font-size: .85rem; }
.btn.block { display: block; width: 100%; margin-top: 12px; }
.btn:disabled { opacity: .6; cursor: wait; }

.note { padding: 10px 14px; border-radius: 8px; margin: 10px 0; border: 1px solid; }
.note.info { background: var(--info-bg); border-color: var(--info-line); }
.note.warn { background: var(--warn-bg); border-color: var(--warn-line); }
.note.err { background: var(--err-bg); border-color: var(--err-line); }
.note.ok { background: var(--ok-bg); border-color: var(--ok-line); }

.grid2, .grid3, .grid4, .grid5 { display: grid; gap: 12px; margin: 10px 0; }
.grid2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid2.top { align-items: start; }
.grid2 .wide { grid-column: 1 / -1; }
.metric { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px; min-width: 0; }
.metric span { display: block; color: var(--muted); font-size: .8rem; }
.metric b { display: block; font-size: 1.35rem; font-weight: 650; overflow-wrap: anywhere; }
.metric small { display: block; font-size: .8rem; color: var(--muted); }
.card .metric { background: var(--bg); }

table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; }
tr.sel td { background: var(--info-bg); }
.tablewrap { overflow: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.tablewrap.mid { max-height: 340px; } .tablewrap.tall { max-height: 480px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin: 18px 0 12px; flex-wrap: wrap; }
.tabs a { padding: 8px 14px; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; }
.tabs a.on { color: var(--text); border-color: var(--accent); }
.filters { display: flex; gap: 10px; align-items: end; flex-wrap: wrap; }
.filters label { margin: 0; min-width: 150px; }
details { margin: 10px 0; } summary { cursor: pointer; font-weight: 600; }
details.danger summary { color: var(--bad); }
pre { white-space: pre-wrap; background: var(--bg); padding: 10px; border-radius: 8px; }
.bars .bar { display: grid; grid-template-columns: 160px 1fr 40px; gap: 8px; align-items: center; margin: 4px 0; }
.bars i { display: block; height: 14px; background: var(--accent); border-radius: 4px; }

/* analyzer */
.analyzer { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 20px; align-items: start; }
.controls { position: sticky; top: 12px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 6px 16px 16px; max-height: calc(100vh - 24px); overflow: auto; }
.controls h2 { margin-top: .6em; } .controls h3 { margin: 1.2em 0 0; color: var(--muted); font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin: 6px 0; }
.seg button { border: 0; background: transparent; color: var(--text); padding: 6px 14px; font: inherit; cursor: pointer; }
.seg button.on { background: var(--accent); color: var(--accent-text); }
.seg button:disabled { opacity: .5; cursor: not-allowed; }
.combo { position: relative; }
.combo ul { position: absolute; z-index: 20; left: 0; right: 0; max-height: 300px; overflow: auto; margin: 2px 0 0; padding: 4px 0; list-style: none; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,.18); }
.combo li { padding: 6px 10px; cursor: pointer; font-size: .85rem; }
.combo li.on, .combo li:hover { background: var(--info-bg); }
.results { min-width: 0; }
.title { margin-top: .2em; }
.signal { font-size: 1.5rem; }
.chart { width: 100%; min-height: 640px; margin: 10px 0; }
.chart.small { min-height: 240px; }
.checks { list-style: none; padding: 0; margin: 0; columns: 2; }
.news { list-style: none; padding: 0; }
.news li { padding: 8px 0; border-bottom: 1px solid var(--line); }
.news small { display: block; color: var(--muted); }
.loading { display: flex; gap: 12px; align-items: center; padding: 40px 0; color: var(--muted); }
.spin { width: 22px; height: 22px; border: 3px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 900px) {
  .analyzer { grid-template-columns: 1fr; }
  .controls { position: static; max-height: none; }
  .grid4, .grid5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid2, .grid3 { grid-template-columns: 1fr; }
  .chart { min-height: 520px; }
  .wrap { padding: 12px 16px 30px; }
  .checks { columns: 1; }
}