/* ===========================================================================
   theme.css — shared design system for the BGP/WHOIS lookup pages.
   Single source of truth. design-f.html, design-a/b/c.html all link this file
   and add only their own layout rules on top. Do not fork it.

   ---------------------------------------------------------------------------
   THE ORANGE IS FOUR TOKENS, NOT ONE. Do not collapse them.
   The brand orange fails AA for text (2.58:1 on white). The split below is the
   only reason this palette passes. Every number is a measured WCAG 2.1 ratio.

     --orange       #F6821F  FILLS ONLY — button faces, the 3px rules on cards
                             and tiles, the brand mark, active indicators.
                             2.58:1 on white, 2.34:1 on canvas. NEVER text,
                             NEVER a thin graphical mark that carries meaning.
     --on-orange    #2B1600  text placed ON an --orange fill. 6.68:1 on #F6821F.
     --orange-text  #8F4600  ALL orange text and links. 6.90:1 on card,
                             6.26:1 on canvas, 6.36:1 on --orange-tint.
     --orange-mark  #CF6309  chart marks, meter bars — any graphic that carries
                             meaning and needs the 3:1 non-text minimum.
                             3.86:1 on white, 3.50:1 on canvas, 3.35:1 on
                             --neu-bg (the meter track).

   TEXT ON SURFACES — every combination below clears AA 4.5:1.
     surfaces:  --card #FFFFFF · --canvas #F2F4F7 · --fill #F7F8FA ·
                --zebra #FAFBFC · --orange-tint #FFF4E8 · --neu-bg #ECEFF3 ·
                --ok-bg #E6F4EC · --bad-bg #FDECEB · --warn-bg #FDF3E0
     --t1 #111A24  primary    card 17.54 · canvas 15.92 · fill 16.51 · zebra 16.93
     --t2 #49546A  secondary  card  7.61 · canvas  6.91 · fill  7.16 · zebra  7.35
     --t3 #5C6778  muted      card  5.73 · canvas  5.20 · fill  5.39 · zebra  5.53
                   (--t3 is the LIGHTEST text in the system. Nothing lighter.)
     --ok   #06603A  card 7.66 · on --ok-bg   6.75
     --bad  #A3231B  card 7.46 · on --bad-bg  6.53
     --warn #7A4A00  card 7.48 · on --warn-bg 6.79
     --orange-text   card 6.90 · on --orange-tint 6.36 · on --orange-tint-2 5.82

   NON-TEXT (3:1 minimum):
     --line-strong #767F8C  borders of focusable controls. 4.05:1 on card.
     --line        #DCE0E6  decorative hairlines only (1.33:1) — never the sole
                            boundary of an interactive control.
     button face --orange with a #D9700F border: border 3.35:1 on white.
     chart categorical palette, all >=3:1 on white and on canvas:
       #CF6309 orange 3.86 · #0B63B8 blue 6.02 · #06603A green 7.66
       #6B47D6 violet 6.00 · #A3231B red 7.46 · #0F7B8A teal 4.98
       #8A5A00 olive 5.93 · #C2185B magenta 5.87

   TYPE SCALE — the user rejected an earlier design for small text.
   13px is a hard floor, including chart labels, captions and table headers.
     --fs-xs  13px  captions, table headers, badges, chart labels  (FLOOR)
     --fs-sm  15px  table cells, dense metadata, record blocks
     --fs-md  17px  body copy (document default)
     --fs-lg  20px  sub-headings
     --fs-xl  21px  panel titles
     --fs-2xl 33px  stat tile values
     --fs-3xl 32px  resource identifier
   Monospace is for identifiers only: ASNs, prefixes, IPs, whois records.

   SHARED CLASS VOCABULARY (keep these names stable):
     .wrap .stack .card .card>header .card>.body .srcchip
     .tiles .tile .tile .k/.v/.ctx .trend
     .tbl (also styles bare <table> inside .tscroll) .tscroll
     .badge.ok/.bad/.warn/.neu/.acc   .note.ok/.bad/.warn/.acc   .cap
     .chip  .cc (country code link)  .meter/.meter-track/.meter-bar
     .kv  .rec/.reclist  .chart/.chart-off  .twin  .twogrid  .subh
     .topbar .brand .searchform .secnav  footer.page  .attrib  .loading
   =========================================================================== */

:root{
  /* brand — see the four-token note above */
  --orange:#F6821F;
  --orange-mark:#CF6309;
  --orange-text:#8F4600;
  --on-orange:#2B1600;
  --orange-tint:#FFF4E8;
  --orange-tint-2:#FFE8D1;

  /* surfaces */
  --canvas:#F2F4F7;
  --card:#FFFFFF;
  --fill:#F7F8FA;
  --zebra:#FAFBFC;
  --neu-bg:#ECEFF3;

  /* lines */
  --line:#DCE0E6;
  --line-soft:#E8EBEF;
  --line-strong:#767F8C;

  /* text */
  --t1:#111A24;
  --t2:#49546A;
  --t3:#5C6778;

  /* status */
  --ok:#06603A;   --ok-bg:#E6F4EC;   --ok-line:#BFE3CE;
  --bad:#A3231B;  --bad-bg:#FDECEB;  --bad-line:#F4C9C5;
  --warn:#7A4A00; --warn-bg:#FDF3E0; --warn-line:#EBD4A8;

  /* type */
  --fs-xs:13px; --fs-sm:15px; --fs-md:17px; --fs-lg:20px;
  --fs-xl:21px; --fs-2xl:33px; --fs-3xl:32px;
  --mono:ui-monospace,SFMono-Regular,"Cascadia Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;

  /* shape */
  --r:10px;
  --r-sm:7px;
  --shadow:0 1px 2px rgba(17,26,36,.05),0 1px 3px rgba(17,26,36,.04);
  --shadow-up:0 2px 6px rgba(17,26,36,.07),0 1px 2px rgba(17,26,36,.05);
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--canvas);color:var(--t1);
  font-family:var(--sans);font-size:var(--fs-md);line-height:1.55;
  font-feature-settings:"cv11","ss01";
}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:600;letter-spacing:-.011em}
p{margin:0 0 .7em}
p:last-child{margin-bottom:0}
a{color:var(--orange-text);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--orange-text);outline-offset:2px;border-radius:3px}
code,kbd,.mono,.m{font-family:var(--mono);font-variant-ligatures:none}
.m{font-size:var(--fs-sm)}
.skip{position:absolute;left:-9999px;top:0;background:var(--card);color:var(--t1);
  padding:10px 16px;z-index:60;border:2px solid var(--orange-text);border-radius:0 0 var(--r-sm) 0}
.skip:focus{left:0}

/* ---------- shell ---------- */
.brandrule{height:3px;background:var(--orange)}
.wrap{max-width:1380px;margin:0 auto;padding:0 24px}
.stack{display:flex;flex-direction:column;gap:20px}
main{padding:22px 0 60px}

.topbar{position:sticky;top:0;z-index:40;background:var(--card);
  border-bottom:1px solid var(--line);box-shadow:0 1px 2px rgba(17,26,36,.04)}
.topbar .wrap{display:flex;align-items:center;gap:26px;min-height:70px;flex-wrap:wrap;
  padding-top:10px;padding-bottom:10px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;text-decoration:none;color:var(--t1)}
.brand:hover{text-decoration:none}
.brandmark{width:32px;height:32px;border-radius:8px;background:var(--orange);
  display:grid;place-items:center;flex:0 0 auto}
.brandmark span{font:700 17px/1 var(--sans);color:var(--on-orange);letter-spacing:-.03em}
.brandname{font-size:19px;font-weight:600;letter-spacing:-.015em;white-space:nowrap}
.brandname em{font-style:normal;color:var(--t3);font-weight:500}

.searchform{flex:1 1 380px;display:flex;gap:10px;min-width:280px}
.searchwrap{flex:1 1 auto;position:relative;display:flex}
.searchform input{
  flex:1 1 auto;font:500 var(--fs-md)/1.4 var(--mono);color:var(--t1);
  padding:11px 14px;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  background:var(--card);min-width:0}
.searchform input::placeholder{color:var(--t3);font-family:var(--sans);font-weight:400}
.searchform button{
  font:600 16px/1 var(--sans);color:var(--on-orange);background:var(--orange);
  border:1px solid #D9700F;border-radius:var(--r-sm);padding:0 20px;cursor:pointer}
.searchform button:hover{background:#E8780F}

.examples{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:0 0 14px}
.examples .lbl{font-size:var(--fs-xs);font-weight:600;text-transform:uppercase;
  letter-spacing:.07em;color:var(--t3)}
.chip{display:inline-block;font:500 14px/1 var(--mono);color:var(--t2);background:var(--fill);
  border:1px solid var(--line);border-radius:999px;padding:7px 12px;text-decoration:none}
.chip:hover{border-color:var(--orange);background:var(--orange-tint);
  color:var(--orange-text);text-decoration:none}

.secnav{position:sticky;top:70px;z-index:30;background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.secnav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0;overflow-x:auto;flex-wrap:wrap}
.secnav a{display:block;padding:12px 13px 10px;font-size:var(--fs-sm);font-weight:500;color:var(--t2);
  text-decoration:none;border-bottom:3px solid transparent;white-space:nowrap}
.secnav a:hover{color:var(--t1);border-bottom-color:var(--line)}
.secnav a[aria-current="true"]{color:var(--t1);font-weight:600;border-bottom-color:var(--orange)}
.secnav:empty{display:none}

/* ---------- card / panel ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.card>header{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;
  padding:16px 20px;border-bottom:1px solid var(--line-soft)}
.card>header h2{font-size:var(--fs-xl)}
.card>header .sub{font-size:var(--fs-sm);color:var(--t3)}
.card>.body{padding:20px}
.card>.body>*+*{margin-top:16px}
.srcchip{margin-left:auto;font-size:var(--fs-xs);font-weight:600;color:var(--t2);background:var(--fill);
  border:1px solid var(--line);border-radius:999px;padding:4px 11px;white-space:nowrap}
.subh,.twogrid h3{font-size:var(--fs-md);font-weight:600;margin:0 0 9px}
.twogrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:20px}
.twogrid>section{min-width:0}

/* ---------- stat tiles ---------- */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(214px,1fr));gap:14px}
.tile{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow);padding:16px 18px;position:relative;overflow:hidden}
.tile::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--orange)}
.tile.quiet::before{background:var(--line)}
.tile .k{font-size:var(--fs-xs);font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--t3)}
.tile .v{font-size:var(--fs-2xl);font-weight:600;letter-spacing:-.025em;font-variant-numeric:tabular-nums;
  line-height:1.15;margin:4px 0 2px}
.tile .v.sm{font-size:23px;letter-spacing:-.01em}
.tile .v .u{font-size:var(--fs-md);font-weight:500;color:var(--t2);letter-spacing:0}
.tile .ctx{font-size:14px;color:var(--t2);line-height:1.45}
.tile .trend{font-size:14px;font-weight:600;margin-top:3px}
.trend.up{color:var(--ok)} .trend.down{color:var(--bad)} .trend.flat{color:var(--t2)}

/* ---------- badges ---------- */
.badge{display:inline-block;font-size:var(--fs-xs);font-weight:600;border-radius:999px;padding:3px 10px;
  white-space:nowrap;border:1px solid transparent}
.badge.ok{color:var(--ok);background:var(--ok-bg);border-color:var(--ok-line)}
.badge.bad{color:var(--bad);background:var(--bad-bg);border-color:var(--bad-line)}
.badge.warn{color:var(--warn);background:var(--warn-bg);border-color:var(--warn-line)}
.badge.neu{color:var(--t2);background:var(--neu-bg);border-color:var(--line)}
.badge.acc{color:var(--orange-text);background:var(--orange-tint);border-color:var(--orange-tint-2)}

/* ---------- notes / captions / loading ---------- */
.note{border:1px solid var(--line);border-left:4px solid var(--line-strong);border-radius:var(--r-sm);
  padding:13px 16px;font-size:16px;background:var(--fill);color:var(--t2)}
.note.warn{background:var(--warn-bg);border-color:var(--warn-line);border-left-color:var(--warn);color:var(--warn)}
.note.bad{background:var(--bad-bg);border-color:var(--bad-line);border-left-color:var(--bad);color:var(--bad)}
.note.ok{background:var(--ok-bg);border-color:var(--ok-line);border-left-color:var(--ok);color:var(--ok)}
.note.acc{background:var(--orange-tint);border-color:var(--orange-tint-2);
  border-left-color:var(--orange);color:var(--t1)}
.note b{font-weight:700}
.note code{font-size:var(--fs-sm);background:rgba(17,26,36,.06);padding:2px 6px;border-radius:4px}
.cap{font-size:var(--fs-xs);color:var(--t3);line-height:1.5}
.cap b{color:var(--t2)}
.loading{font-size:16px;color:var(--t3)}
.loading::after{content:"";display:inline-block;width:9px;height:9px;margin-left:8px;border-radius:50%;
  background:var(--orange);animation:pulse 1s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.25}50%{opacity:1}}
@media (prefers-reduced-motion:reduce){.loading::after{animation:none;opacity:.7}}

/* ---------- tables ---------- */
.tscroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-sm)}
.tbl,.tscroll table{border-collapse:collapse;width:100%;font-size:var(--fs-sm)}
caption{text-align:left;font-size:var(--fs-xs);color:var(--t3);padding:0 0 7px}
.tbl th,.tbl td,.tscroll th,.tscroll td{
  padding:9px 13px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line-soft)}
.tbl thead th,.tscroll thead th{background:var(--fill);font-size:var(--fs-xs);font-weight:700;
  text-transform:uppercase;letter-spacing:.06em;color:var(--t2);white-space:nowrap;
  border-bottom:1px solid var(--line)}
.tbl tbody tr:nth-child(even),.tscroll tbody tr:nth-child(even){background:var(--zebra)}
.tbl tbody tr:last-child td,.tscroll tbody tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
td.mono,.mono td{font-family:var(--mono)}
.hdrtable th{width:1%;white-space:nowrap;color:var(--t2);font-weight:600;background:var(--fill);
  font-size:14px;text-transform:none;letter-spacing:0}

/* ---------- meter (CSS-only bar; works with no chart library) ---------- */
.meter{display:flex;align-items:center;gap:10px}
.meter-track{flex:0 0 140px;height:11px;border-radius:3px;background:var(--neu-bg);
  border:1px solid var(--line);overflow:hidden}
.meter-bar{display:block;height:100%;background:var(--orange-mark);min-width:2px}
.meter-txt{font-size:var(--fs-xs);color:var(--t2);white-space:nowrap;font-variant-numeric:tabular-nums}

/* ---------- key/value + raw record blocks ---------- */
.kv{display:grid;grid-template-columns:minmax(130px,max-content) 1fr;gap:1px;
  border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;background:var(--line-soft)}
.kv dt{background:var(--fill);padding:8px 13px;font-size:14px;font-weight:600;color:var(--t2)}
.kv dd{background:var(--card);padding:8px 13px;margin:0;font-size:var(--fs-sm);word-break:break-word}
.kv dd.mono{font-family:var(--mono)}
.reclist{display:flex;flex-direction:column;gap:14px}
.rec{border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.rec>h4{font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--t2);
  background:var(--fill);padding:9px 13px;border-bottom:1px solid var(--line)}
.rec pre{margin:0;padding:13px;font-family:var(--mono);font-size:var(--fs-sm);line-height:1.6;
  white-space:pre-wrap;word-break:break-word;color:var(--t1);background:var(--card)}
.rec pre .rk{color:var(--t3)}

/* ---------- country code chip ----------
   ALWAYS a link to rankings.html#<CC>/cone. The ISO2 letters are the clickable
   text. Do NOT add a regional-indicator emoji flag: Windows has no glyph and
   falls back to the same two letters, so cells read "AL AL".                */
.cc{display:inline-block;font-family:var(--mono);font-weight:600;font-size:14px;line-height:1.5;
  color:var(--orange-text);background:var(--orange-tint);border:1px solid var(--orange-tint-2);
  border-radius:5px;padding:0 7px;text-decoration:none;letter-spacing:.04em}
.cc:hover{background:var(--orange-tint-2);border-color:var(--orange);text-decoration:underline}
.cc.none{color:var(--t3);background:transparent;border-color:transparent;padding:0;
  font-weight:400;font-style:italic;font-family:var(--sans);font-size:inherit}

/* ---------- charts ----------
   .chart gets an explicit pixel height in JS. When the chart library is blocked,
   clear that height and swap the class to .chart-off so there is no empty gap. */
.chart{width:100%;margin-top:4px}
.chart-off{border:1px dashed var(--line-strong);border-radius:var(--r-sm);padding:14px 16px;
  background:var(--fill);font-size:var(--fs-sm);color:var(--t2)}
.chart-off code{font-size:var(--fs-xs);word-break:break-all;color:var(--t1)}
.legendrow{display:flex;gap:16px;flex-wrap:wrap;font-size:14px;color:var(--t2);margin-top:8px}
.legendrow span{display:inline-flex;align-items:center;gap:7px}
.sw{width:14px;height:14px;border-radius:3px;display:inline-block;flex:0 0 auto}

/* ---------- disclosure (text twin for every chart) ---------- */
.twin{border:1px solid var(--line);border-radius:var(--r-sm);background:var(--fill)}
.twin>summary{cursor:pointer;padding:10px 14px;font-size:var(--fs-sm);font-weight:600;
  color:var(--t2);list-style:none}
.twin>summary::before{content:"▸ ";color:var(--orange-text)}
.twin[open]>summary::before{content:"▾ "}
.twin[open]>summary{border-bottom:1px solid var(--line)}
.twin .tbody{padding:14px;background:var(--card);border-radius:0 0 var(--r-sm) var(--r-sm)}

/* ---------- footer / licence attribution ---------- */
footer.page{border-top:1px solid var(--line);margin-top:30px;padding:24px 0 50px;
  font-size:var(--fs-sm);color:var(--t2)}
footer.page .wrap>*+*{margin-top:10px}
.attrib{background:var(--orange-tint);border:1px solid var(--orange-tint-2);border-radius:var(--r-sm);
  padding:13px 16px;color:var(--t1);font-size:var(--fs-sm)}
.attrib h3{font-size:14px;text-transform:uppercase;letter-spacing:.07em;
  color:var(--orange-text);margin-bottom:6px}
.attrib ul{margin:0;padding-left:20px}

@media (max-width:760px){
  .wrap{padding:0 16px}
  .tile .v{font-size:28px}
  .secnav{top:auto;position:static}
}