/* BidTerra: shared design system. White by default; dark mode only when the visitor chooses it (toggle in the top bar, remembered). */
:root{
  --bg:#fbfbfd; --bg2:#f5f5f7; --surface:#fff; --ink:#1d1d1f; --muted:#6e6e73; --faint:#86868b;
  --line:rgba(0,0,0,.09); --line2:rgba(0,0,0,.05);
  --accent:#0071e3; --accent-ink:#fff; --accent-soft:rgba(0,113,227,.1);
  --good:#248a3d; --good-soft:rgba(36,138,61,.12);
  --warn:#c93400; --warn-soft:rgba(255,149,0,.16);
  --bad:#d70015; --bad-soft:rgba(215,0,21,.1);
  --glass:rgba(251,251,253,.72);
  --shadow:0 1px 2px rgba(0,0,0,.04),0 8px 30px rgba(0,0,0,.06);
  --shadow-lg:0 2px 4px rgba(0,0,0,.04),0 24px 60px rgba(0,0,0,.14);
  --r-s:10px; --r-m:16px; --r-l:22px; --r-xl:32px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue",Helvetica,Arial,sans-serif;
  color-scheme:light;
}
@media all{
  :root[data-theme="dark"]{
    --bg:#000; --bg2:#0b0b0d; --surface:#1c1c1e; --ink:#f5f5f7; --muted:#a1a1a6; --faint:#86868b;
    --line:rgba(255,255,255,.12); --line2:rgba(255,255,255,.07);
    --accent:#2997ff; --accent-ink:#fff; --accent-soft:rgba(41,151,255,.16);
    --good:#32d74b; --good-soft:rgba(50,215,75,.15);
    --warn:#ff9f0a; --warn-soft:rgba(255,159,10,.16);
    --bad:#ff453a; --bad-soft:rgba(255,69,58,.16);
    --glass:rgba(22,22,23,.72);
    --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 30px rgba(0,0,0,.35);
    --shadow-lg:0 2px 4px rgba(0,0,0,.4),0 24px 60px rgba(0,0,0,.6);
    color-scheme:dark;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.47 var(--font);-webkit-font-smoothing:antialiased;letter-spacing:-.011em}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 55%,transparent);outline-offset:2px;border-radius:8px}
button{font:inherit;color:inherit}
img{max-width:100%}

/* frosted navigation bar */
.nav{position:sticky;top:0;z-index:1000;display:flex;align-items:center;gap:22px;height:52px;padding:0 max(20px,calc((100vw - 1100px)/2));background:var(--glass);-webkit-backdrop-filter:saturate(180%) blur(22px);backdrop-filter:saturate(180%) blur(22px);border-bottom:1px solid var(--line2)}
.wordmark{white-space:nowrap;flex:none;display:flex;align-items:center;gap:9px;font-weight:600;font-size:17px;letter-spacing:-.02em;color:var(--ink)}
.wordmark:hover{text-decoration:none}
.wordmark .mark{width:22px;height:22px;border-radius:7px;background:conic-gradient(from 210deg,#0a84ff,#5e5ce6,#bf5af2,#0a84ff);display:grid;place-items:center;box-shadow:inset 0 0 0 1px rgba(255,255,255,.25)}
.wordmark .mark::after{content:"";width:8px;height:8px;border-radius:50%;background:#fff}
.nav .links{display:flex;gap:26px;margin-left:auto;font-size:13px}
.nav .links a{color:var(--muted)}
.nav .links a:hover{color:var(--ink);text-decoration:none}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 24px;border:0;border-radius:980px;background:var(--accent);color:var(--accent-ink);font-weight:500;font-size:17px;cursor:pointer;transition:transform .15s,filter .15s}
.btn:hover{filter:brightness(1.08);text-decoration:none}
.btn:active{transform:scale(.97)}
.btn.small{min-height:32px;padding:0 15px;font-size:13px}
.btn.ghost{background:var(--accent-soft);color:var(--accent)}
.btn.plain{background:transparent;color:var(--accent);padding:0 8px}
.btn.plain:hover{text-decoration:underline;filter:none}

.pill{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;border-radius:980px;background:var(--bg2);color:var(--muted);font-size:12px;font-weight:500;white-space:nowrap}
.pill.warn{background:var(--warn-soft);color:var(--warn)}
.pill.good{background:var(--good-soft);color:var(--good)}
.pill.info{background:var(--accent-soft);color:var(--accent)}
.pill svg{width:14px;height:14px}

.ico{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}

@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
.themebtn{display:inline-grid;place-items:center;width:28px;height:28px;border:0;border-radius:8px;background:transparent;color:var(--muted);cursor:pointer;padding:0}
.themebtn:hover{background:var(--bg2);color:var(--ink)}
.nav .links a{white-space:nowrap}

/* ---- navigation: pill links, language menu, mobile menu (BidTerra) ---- */
.wordmark em{font-style:normal;background:linear-gradient(100deg,#0a84ff,#5e5ce6 55%,#bf5af2);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav .links{align-items:center;gap:2px}
.nav .links>a:not(.btn){padding:7px 13px;border-radius:980px;font-size:13.5px;font-weight:500;color:var(--muted);transition:background .15s,color .15s}
.nav .links>a:not(.btn):hover{background:var(--bg2);color:var(--ink)}
.nav .links>a[aria-current="page"]{background:var(--accent-soft);color:var(--accent)}
.nav .links .btn.small{margin-left:8px;min-height:34px;padding:0 18px;font-size:13.5px;font-weight:600;box-shadow:0 1px 2px rgba(0,113,227,.3),0 4px 14px rgba(0,113,227,.22)}
.nav .links .btn.small:hover{filter:brightness(1.07);box-shadow:0 2px 4px rgba(0,113,227,.3),0 8px 20px rgba(0,113,227,.28)}
.nav .links .btn.small.alt{background:var(--accent-soft);color:var(--accent)!important;box-shadow:none}
.langsw{position:relative;margin-left:10px}
.langbtn{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 10px 0 11px;border:1px solid var(--line);border-radius:980px;background:var(--surface);color:var(--ink);font-size:12.5px;font-weight:600;letter-spacing:.03em;cursor:pointer}
.langbtn:hover{background:var(--bg2)}
.langbtn svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;color:var(--muted)}
.langbtn .chev{width:12px;height:12px;transition:transform .15s}
.langbtn[aria-expanded="true"] .chev{transform:rotate(180deg)}
.langmenu{position:absolute;right:0;top:calc(100% + 8px);min-width:170px;padding:6px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow-lg);z-index:1200}
.langmenu[hidden]{display:none}
.langmenu a{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:9px 12px;border-radius:9px;color:var(--ink)!important;font-size:14px;font-weight:500}
.langmenu a:hover{background:var(--bg2);text-decoration:none}
.langmenu a small{color:var(--faint);font-size:11px;font-weight:600;letter-spacing:.04em}
.langmenu a[aria-current="true"]{color:var(--accent)!important;background:var(--accent-soft)}
.langmenu a[aria-current="true"]::after{content:"\2713";font-weight:700}
.themebtn{width:34px;height:34px;margin-left:6px;border:1px solid var(--line);border-radius:50%;background:var(--surface)}
.menubtn{display:none;margin-left:auto;width:38px;height:38px;border:1px solid var(--line);border-radius:50%;background:var(--surface);color:var(--ink);cursor:pointer;padding:0;place-items:center}
.menubtn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round}
@media (max-width:900px){
  .menubtn{display:inline-grid}
  .nav .links{display:none;position:absolute;left:0;right:0;top:100%;margin:0;flex-direction:column;align-items:stretch;gap:2px;padding:10px 16px 18px;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);max-height:calc(100vh - 56px);overflow:auto}
  .nav.open .links{display:flex}
  .nav .links>a:not(.btn){padding:13px 14px;font-size:16px;border-radius:12px}
  .nav .links .btn.small{margin:8px 0 0;min-height:46px;font-size:16px}
  .langsw{margin:10px 0 0}
  .langbtn{width:100%;height:46px;justify-content:space-between;font-size:14px}
  .langmenu{position:static;margin-top:6px;box-shadow:none}
  .themebtn{margin:8px 0 0;width:100%;height:44px;border-radius:12px}
}
.themebtn .tlabel{display:none}
@media (max-width:900px){.themebtn{display:inline-flex;align-items:center;justify-content:center;gap:8px}.themebtn .tlabel{display:inline;font-size:14px}}
.wordmark .wn{letter-spacing:-.025em}