/* PolarFixed Help Center (Knowledge Base) — sits on top of /polarfixed/assets/pfx.css.
   Mirrors the ProposalsFixed Knowledge Base layout (hero search, featured + grid categories, popular articles,
   article pages with a category sidebar, client-side search) in the PolarFixed brand. */

/* search box (also used on the Support Center) */
.kb-search{display:flex;align-items:center;gap:8px;max-width:640px;width:100%;padding:6px 6px 6px 16px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-md);text-align:left}
.kb-search>svg{width:20px;height:20px;flex:none;stroke:var(--muted-2);fill:none;stroke-width:2;stroke-linecap:round}
.kb-search input{flex:1;min-width:0;height:46px;border:0;outline:0;background:none;font-size:16px;color:var(--ink)}
.kb-search input::placeholder{color:var(--muted-2)}
.kb-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,55,245,.14),var(--shadow-md)}
.kb-search .btn{padding:13px 20px;border-radius:10px;box-shadow:none}
.kb-search-lg{max-width:700px}
.kb-search-lg input{height:52px;font-size:17px}

/* hero */
.kb-hero{position:relative;overflow:hidden;padding:72px 0 76px;text-align:center;color:#fff;background:radial-gradient(900px 500px at 78% -20%,#1d2cb8 0%,rgba(29,44,184,0) 62%),radial-gradient(700px 420px at 0% 120%,#2f37f5 0%,rgba(47,55,245,0) 58%),linear-gradient(160deg,#000a24,#001134 60%,#000a24)}
.kb-hero .wrap{display:flex;flex-direction:column;align-items:center}
.kb-hero .eyebrow{color:var(--accent)}
.kb-hero h1{color:#fff;font-size:clamp(34px,5.2vw,54px);margin-top:12px;max-width:900px}
.kb-hero p{margin-top:14px;color:#c8cee8;font-size:18px;max-width:640px}
.kb-hero .kb-search{margin-top:28px;border-color:transparent}
.kb-hero-sm{padding:44px 0 52px}
.kb-hero-sm h1{font-size:clamp(28px,4.2vw,42px);margin-top:16px}
.kb-hero-sm p{font-size:17px}
.kb-hero .kb-meta{color:#aeb6d8;font-size:14.5px}
.kb-crumbs{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:6px 8px;font-size:14px;color:#aeb6d8}
.kb-crumbs a{color:#d6dbff;font-weight:600}
.kb-crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.kb-crumbs .sep{color:#6b76a6}
.kb-crumbs [aria-current]{color:#aeb6d8}

/* sections */
.kb-sec{padding:56px 0 80px}
.kb-narrow{max-width:860px}
.kb-feats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.kb-feat{position:relative;display:flex;flex-direction:column;padding:32px;border-radius:22px;background:linear-gradient(135deg,#f5f6ff,#fff);border:1px solid #e1e3fd;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .25s ease,border-color .2s ease}
.kb-feat:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c9ccfc}
.kb-feat h3{font-size:24px;margin-top:10px}
.kb-feat p{margin-top:10px;color:var(--muted);font-size:16px;flex:1}
.kb-go{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-weight:700;font-size:15px;color:var(--brand)}
.kb-go svg,.kb-cat svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.kb-count{font-size:12.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted-2)}
.kb-cats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:22px}
.kb-cat{display:flex;flex-direction:column;padding:24px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .25s ease,border-color .2s ease}
.kb-cat:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#d8dde6}
.kb-cat h3{font-size:19px}
.kb-cat p{margin-top:8px;color:var(--muted);font-size:15px;flex:1}
.kb-cat .kb-count{margin-top:14px}
.kb-recent{margin-top:48px}
.kb-recent h2{font-size:24px;margin-bottom:14px}

/* article lists */
.kb-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 24px}
.kb-list a{display:flex;align-items:center;gap:10px;padding:12px 12px;border-radius:10px;font-weight:600;font-size:16px;color:var(--ink);transition:background-color .15s ease,color .15s ease}
.kb-list a:hover{background:var(--brand-tint-2);color:var(--brand)}
.kb-list svg{width:12px;height:12px;flex:none;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.kb-list-lg{grid-template-columns:minmax(0,1fr);gap:10px}
.kb-list-lg a{padding:18px 20px;border:1px solid var(--line);background:#fff;border-radius:14px;box-shadow:var(--shadow-sm);font-size:17px}
.kb-more{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;margin-top:28px;font-size:14px;color:var(--muted)}
.kb-pill{padding:7px 13px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink-2);font-weight:600;transition:border-color .15s ease,color .15s ease}
.kb-pill:hover{border-color:#c9ccfc;color:var(--brand)}

/* article page */
.kb-article{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.kb-body{max-width:720px;font-size:17px;line-height:1.7;color:var(--ink-2)}
.kb-body>*+*{margin-top:16px}
.kb-body h2{font-size:22px;margin-top:30px;color:var(--ink)}
.kb-body ul,.kb-body ol{padding-left:22px}
.kb-body li+li{margin-top:8px}
.kb-body li::marker{color:var(--brand)}
.kb-body b{color:var(--ink)}
.kb-body a{color:var(--brand);font-weight:600;text-decoration:underline;text-decoration-color:rgba(47,55,245,.35);text-underline-offset:3px}
.kb-body a:hover{text-decoration-color:var(--brand)}
.kb-side{position:sticky;top:100px;padding:22px;border:1px solid var(--line);border-radius:18px;background:var(--bg-2)}
.kb-back{font-size:14px;font-weight:700;color:var(--brand)}
.kb-side h2{font-size:16px;margin:14px 0 10px;line-height:1.3}
.kb-side ul{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.kb-side li a{display:block;padding:8px 10px;border-radius:8px;font-size:14.5px;line-height:1.4;color:var(--ink-2)}
.kb-side li a:hover{background:#fff;color:var(--brand)}
.kb-side li a[aria-current]{background:#fff;color:var(--brand);font-weight:700;box-shadow:var(--shadow-sm)}

/* still need help */
.kb-help{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px 28px;margin-top:56px;padding:28px 32px;border-radius:20px;background:var(--brand-tint-2);border:1px solid #e1e3fd}
.kb-help h2{font-size:21px}
.kb-help p{margin-top:6px;color:var(--muted);font-size:15.5px;max-width:520px}
.kb-help-acts{display:flex;flex-wrap:wrap;gap:12px}

/* search results */
.kb-results-h{font-size:22px;margin-bottom:18px}
.kb-res{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.kb-res li{padding:20px 22px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow-sm)}
.kb-res h3{font-size:18px}
.kb-res h3 a:hover{color:var(--brand)}
.kb-res p{margin-top:8px;color:var(--muted);font-size:15px;line-height:1.6}
.kb-res .cat{display:inline-block;margin-top:10px;font-size:12.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted-2)}
.kb-res mark{background:#e9eaff;color:var(--ink);border-radius:3px;padding:0 2px}
.kb-empty{color:var(--muted);font-size:16px}

@media (max-width:960px){
  .kb-article{grid-template-columns:minmax(0,1fr);gap:32px}
  .kb-side{position:static}
  .kb-cats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .kb-hero{padding:48px 0 54px}
  .kb-hero-sm{padding:34px 0 40px}
  .kb-hero p{font-size:16.5px}
  .kb-feats,.kb-cats,.kb-list{grid-template-columns:minmax(0,1fr)}
  .kb-feat{padding:24px}
  .kb-search{padding-left:12px}
  .kb-search .btn{padding:12px 14px}
  .kb-sec{padding:40px 0 64px}
  .kb-body{font-size:16.5px}
  .kb-help{padding:24px 20px}
  .kb-help-acts,.kb-help-acts .btn{width:100%}
}