:root {
  --bg: #0f1115; --panel: #171a21; --line: #262b36; --fg: #e6e9ef;
  --muted: #8b93a3; --accent: #6ea8fe; --ok: #46d369; --no: #5a6172;
  --bad: #ff6b6b; --warn: #ffcc66;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 15px/1.5 ui-sans-serif, system-ui, "Segoe UI", Roboto, sans-serif;
}
header { padding: 24px 24px 0; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { display: block; }
h1 { margin: 0; font-size: 22px; letter-spacing: -0.01em; }
.sub { margin: 3px 0 0; color: var(--muted); }
.banner { font-size: 13px; padding: 8px 12px; border-radius: 8px; background: var(--panel);
  border: 1px solid var(--line); display: inline-block; margin-top: 14px; }
.banner.warn { border-color: var(--warn); color: var(--warn); }
.banner.good { border-color: var(--ok); }

/* ---- tab navigation ---- */
.tabs { display: flex; gap: 4px; margin-top: 16px; }
.tab { background: none; border: none; border-bottom: 2px solid transparent;
  border-radius: 0; color: var(--muted); padding: 10px 14px; font-size: 14px;
  cursor: pointer; }
.tab:hover { background: none; color: var(--fg); }
.tab.active { color: var(--fg); border-bottom-color: var(--accent); }
main { min-height: 50vh; }
.tabpanel[hidden] { display: none; }

.controls { padding: 16px 24px; display: flex; flex-wrap: wrap; gap: 18px;
  align-items: center; border-bottom: 1px solid var(--line); }
form { display: flex; gap: 8px; align-items: center; }
input, select, button {
  background: var(--panel); color: var(--fg); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; font: inherit;
}
input[type=text], #search { min-width: 280px; }
button { cursor: pointer; border-color: var(--accent); }
button:hover { background: #1f2530; }
.force { color: var(--muted); font-size: 13px; display: flex; gap: 5px; align-items: center; }
.filters { display: flex; gap: 12px; align-items: center; }
.count { color: var(--muted); font-size: 13px; }
.msg { padding: 8px 24px; min-height: 20px; color: var(--warn); font-size: 14px; }

table { width: 100%; border-collapse: collapse; }
thead th {
  text-align: left; padding: 10px 14px; font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--muted); border-bottom: 1px solid var(--line);
  cursor: pointer; user-select: none; white-space: nowrap;
}
thead th.sort-asc::after { content: " ▲"; color: var(--accent); }
thead th.sort-desc::after { content: " ▼"; color: var(--accent); }
tbody td { padding: 9px 14px; border-bottom: 1px solid var(--line); }
tbody tr:hover { background: #131720; }
.host { font-family: ui-monospace, monospace; }
.cat { color: var(--muted); font-size: 13px; }
/* Redirect destination: a subdued inline tag in the table, an accent link + arrow in the modal. */
.redir-tag { color: var(--muted); font-size: 12px; }
.redir { color: var(--accent); text-decoration: none; }
.redir:hover { text-decoration: underline; }
.arrow { color: var(--muted); }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; }
.dot.y { background: var(--ok); }
.dot.n { background: var(--no); }
.dot.u { background: #3a4150; }   /* unknown / not probed */
.grp { font-family: ui-monospace, monospace; font-size: 12px; color: var(--muted); }
.grp.pq { color: var(--ok); }
.ts { color: var(--muted); font-size: 13px; white-space: nowrap; }
tbody tr { cursor: pointer; }
.hint { padding: 8px 24px; color: var(--muted); font-size: 13px; }

footer { padding: 20px 24px 40px; color: var(--muted); font-size: 13px; max-width: 820px; }
footer em { color: var(--fg); font-style: normal; }

/* ---- about tab ---- */
.about { padding: 22px 24px 48px; max-width: 760px; color: var(--fg); }
.about h2 { font-size: 16px; margin: 22px 0 8px; }
.about h2:first-child { margin-top: 6px; }
.about p { color: var(--muted); }
.about em, .about strong { color: var(--fg); }
.about code { background: var(--panel); border: 1px solid var(--line); border-radius: 4px;
  padding: 1px 5px; font-size: 13px; }
.about a { color: var(--accent); }
.about .api { list-style: none; padding: 0; margin: 0; }
.about .api li { padding: 6px 0; border-bottom: 1px solid var(--line); color: var(--muted);
  font-size: 14px; }

/* ---- changes tab ---- */
.changes { padding: 0 24px 40px; }
.change-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: baseline;
  padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.change-row .chost { font-family: ui-monospace, monospace; color: var(--accent);
  cursor: pointer; text-decoration: none; }
.change-row .chost:hover { text-decoration: underline; }
.chg { font-size: 13px; }
.chg.on { color: var(--ok); }
.chg.off { color: var(--bad); }

/* ---- stats tab ---- */
.stats-controls { display: flex; flex-wrap: wrap; gap: 16px; padding: 4px 16px 12px; }
.stats-controls label { display: flex; gap: 6px; align-items: center; color: var(--muted);
  font-size: 13px; }
#stats-chart { padding: 0 16px 8px; overflow-x: auto; }
#stats-chart svg { display: block; }
.legend { display: flex; flex-wrap: wrap; gap: 14px; padding: 0 16px 14px;
  font-size: 12px; color: var(--muted); }
.legend span { display: inline-flex; gap: 6px; align-items: center; }
.legend i { width: 12px; height: 3px; border-radius: 2px; display: inline-block; }

/* ---- detail modal ---- */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.6);
  display: flex; align-items: flex-start; justify-content: center; padding: 6vh 16px;
  z-index: 50; }
.modal[hidden] { display: none; }
.modal-card { position: relative; background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; max-width: 720px; width: 100%; max-height: 86vh; overflow-y: auto;
  padding: 22px 24px; }
.modal-close { position: absolute; top: 10px; right: 12px; background: none; border: none;
  color: var(--muted); font-size: 24px; line-height: 1; cursor: pointer; padding: 4px 8px; }
.modal-close:hover { color: var(--fg); background: none; }
.modal-card h2 { margin: 0 0 4px; font-size: 19px; font-family: ui-monospace, monospace; }
.modal-card .meta { color: var(--muted); font-size: 13px; margin-bottom: 16px; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; font-size: 14px;
  margin-bottom: 18px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-family: ui-monospace, monospace; }
.tag { font-family: ui-sans-serif, system-ui, sans-serif; font-size: 12px; color: var(--muted); }
.tag.warn { color: var(--warn); }
.tag.bad { color: var(--bad); }
.tag.on { color: var(--ok); }
.badge { font-family: ui-sans-serif, system-ui, sans-serif; font-size: 11px; font-weight: 600;
  padding: 1px 6px; border-radius: 999px; }
.badge.pq { background: rgba(70,211,105,.18); color: var(--ok); border: 1px solid var(--ok); }
.hist { width: 100%; border-collapse: collapse; font-size: 13px; }
.hist th, .hist td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--line);
  white-space: nowrap; }
.hist th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.hist td.mono { font-family: ui-monospace, monospace; }
.hist tr.err td { background: rgba(255,107,107,.07); }
.reliability { margin: 0 0 16px; padding: 9px 12px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 8px; font-size: 13px; color: var(--muted); }
.reliability .tag { font-size: 12px; }

/* ---- KPI tiles ---- */
.kpis { display: flex; flex-wrap: wrap; gap: 12px; padding: 14px 24px 4px; }
.kpi { flex: 1 1 160px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 12px 14px; }
.kpi .num { font-size: 24px; font-weight: 600; letter-spacing: -0.01em; }
.kpi .lbl { color: var(--muted); font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.04em; margin-top: 2px; }
.kpi .sub { color: var(--muted); font-size: 12px; margin-top: 2px; }
.kpi.pq .num { color: var(--ok); }

/* ---- stats panel layout ---- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px; padding: 4px 16px 8px; }
.stats-card { padding: 6px 16px 14px; }
.stats-card h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--muted); margin: 8px 0 12px; font-weight: 600; }
.stats-card h3 .muted { text-transform: none; letter-spacing: 0; }

/* ---- horizontal bar charts (dependency-free) ---- */
.barchart { display: flex; flex-direction: column; gap: 7px; }
.bar-row { display: grid; grid-template-columns: 120px 1fr auto; gap: 10px;
  align-items: center; font-size: 13px; }
.bar-label { color: var(--fg); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar-track { display: block; background: #0d1017; border: 1px solid var(--line);
  border-radius: 5px; height: 14px; overflow: hidden; }
.bar-fill { display: block; height: 100%; background: var(--accent);
  border-radius: 4px 0 0 4px; }
.bar-fill.pq { background: var(--ok); }
.bar-val { color: var(--muted); font-size: 12px; white-space: nowrap;
  font-variant-numeric: tabular-nums; }
.barchart .empty { color: var(--muted); font-size: 13px; }

/* ---- host-level mini charts (in detail modal) ---- */
.host-charts { margin: 4px 0 18px; }
.host-charts h3 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--muted); margin: 14px 0 6px; font-weight: 600; }
.timeline { display: flex; gap: 2px; flex-wrap: wrap; }
.tl-cell { width: 12px; height: 16px; border-radius: 2px; background: var(--no); }
.tl-cell.pq { background: var(--ok); }          /* PQC */
.tl-cell.tls13 { background: var(--accent); }   /* TLS1.3, no PQC */
.tl-cell.up { background: var(--no); }           /* reachable only */
.tl-cell.down { background: var(--bad); }        /* unreachable */
.tl-cell.unk { background: #3a4150; }            /* not probed */
.grouprow { display: grid; grid-template-columns: 150px 1fr; gap: 10px; align-items: center;
  margin-bottom: 4px; font-size: 12px; }
.grouprow .gl { color: var(--muted); font-family: ui-monospace, monospace; }
.legend-inline { display: flex; gap: 14px; flex-wrap: wrap; color: var(--muted);
  font-size: 11px; margin-top: 6px; }
.legend-inline span { display: inline-flex; gap: 5px; align-items: center; }
.legend-inline i { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }

/* ---- wide-table scroll container (keeps the 8-col table from breaking layout) ---- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ---- mobile / narrow viewports ---- */
@media (max-width: 640px) {
  header { padding: 16px 14px 0; }
  h1 { font-size: 19px; }
  .tabs { flex-wrap: wrap; margin-top: 12px; }
  .tab { padding: 9px 12px; }

  /* check + filter controls stack and go full-width (scope to controls so the
     header tab buttons + the force checkbox are NOT stretched) */
  .controls { padding: 12px 14px; gap: 10px; flex-direction: column; align-items: stretch; }
  form, .filters { flex-direction: column; align-items: stretch; gap: 8px; }
  .controls input[type=text], .controls input[type=search],
  .controls select, .controls button { width: 100%; min-width: 0; }
  .force { width: auto; }
  .count { padding: 2px 0; }
  .msg, .hint { padding-left: 14px; padding-right: 14px; }

  /* table: drop the widest/least-essential columns; keep Host, Country, TLS1.3, PQC, Checked */
  #grid th:nth-child(3), #grid td:nth-child(3),   /* Category */
  #grid th:nth-child(5), #grid td:nth-child(5),   /* TLS 1.2 */
  #grid th:nth-child(7), #grid td:nth-child(7) {  /* Negotiated group */
    display: none;
  }
  tbody td { padding: 12px 12px; }                 /* roomier tap targets */
  thead th { padding: 10px 12px; }

  /* detail = bottom sheet, near full-screen */
  .modal { padding: 0; align-items: flex-end; }
  .modal-card { max-width: 100%; width: 100%; max-height: 92vh;
    border-radius: 14px 14px 0 0; padding: 16px 16px 28px; }
  .modal-close { font-size: 30px; top: 6px; right: 8px; padding: 8px 12px; }
  .kv { grid-template-columns: 1fr; gap: 0; }      /* stack label over value */
  .kv dt { margin-top: 10px; }
  .hist { display: block; overflow-x: auto; white-space: nowrap; }  /* scroll history horizontally */
  .grouprow { grid-template-columns: 110px 1fr; }
}

/* ---- admin (login box + inline host edit) ---- */
.admin-box { margin-bottom: 18px; }
.admin-row { display: flex; gap: 10px; align-items: center; font-size: 14px; }
.admin-login { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.admin-login strong { margin-right: 4px; }
.admin-import { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 12px; }
.admin-import strong { flex-basis: 100%; }
.admin-import .hint { flex-basis: 100%; padding: 0; }
.edit-btn { font-size: 12px; padding: 2px 10px; margin-left: 8px; vertical-align: middle; }
.edit-form { display: flex; flex-direction: column; gap: 12px; margin: 8px 0 18px; }
.edit-form label { display: flex; flex-direction: column; gap: 4px; color: var(--muted);
  font-size: 13px; }
.edit-form input { font-family: ui-monospace, monospace; }
.edit-actions { display: flex; gap: 10px; align-items: center; margin-top: 4px; }