/* Explore (search/index.html with an empty query; tools/templates/v3/explore.mjs, the Guided layout)
   and the 404 page's search box. ex- is the Explore screen. Colours come from
   theme tokens only, and each domain's channel colour (--dc), so every theme works. */

.ex[hidden] { display: none !important; }
.sp-kicker-totals { color: var(--muted); font: 600 11.5px/1 var(--mono); letter-spacing: 0; }
.sp-kicker-totals::before { content: ''; display: inline-block; width: 1px; height: 12px; margin: 0 9px -2px 1px; background: color-mix(in srgb, var(--ink) 20%, transparent); }

.ex-section + .ex-section, .ex-duo { margin-top: clamp(40px, 6vw, 64px); }
.ex-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 16px; margin: 0 0 18px; }
.ex-head h2 { margin: 0; font: 680 clamp(21px, 2.4vw, 26px)/1.15 var(--display); letter-spacing: -.025em; color: var(--ink); }
.ex-head p { margin: 0; color: var(--muted); font: 450 14.5px/1.45 var(--sans); }
.ex-go { margin-left: auto; transition: transform .2s var(--ease); }
.ex small { font-variant-numeric: tabular-nums; }

/* shared surfaces: lit panels, a hairline edge and a glow in the domain's colour on hover */
.ex-path, .ex-matrix-wrap, .ex-new-card {
  border: 1px solid color-mix(in srgb, var(--ink) 10%, transparent); background: var(--lit-panel, var(--card)); box-shadow: var(--lit-shadow, none);
}

/* the site's track symbols (landing.css is not loaded here) */
.ex .path-symbol { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.ex .path-symbol circle { fill: currentColor; stroke-width: 1.5; }
.ex .path-symbol .path-symbol-open { fill: none; }
.ex .path-symbol .path-symbol-accent { stroke-width: 2.5; }

/* ---------- a: start-here path cards ---------- */
.ex-paths { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.ex-path { position: relative; display: flex; flex-direction: column; padding: 22px 22px 18px; border-radius: 24px; overflow: hidden; isolation: isolate; }
.ex-path::before { content: ''; position: absolute; inset: -40% 40% 55% -20%; z-index: -1; pointer-events: none;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--dc) 22%, transparent), transparent); opacity: .9; }
.ex-path::after { content: ''; position: absolute; inset: 0 22px auto; height: 2px; border-radius: 2px; background: linear-gradient(90deg, transparent, var(--dc), transparent); opacity: .75; }
.ex-path-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.ex-path .path-symbol { --path-accent: var(--dc); width: 44px; height: 44px; flex-basis: 44px; color: var(--dc); filter: drop-shadow(0 0 10px color-mix(in srgb, var(--dc) 45%, transparent)); }
.ex-path-meta { padding: 5px 10px; border-radius: var(--r-pill); color: var(--ink-2); font: 600 11.5px/1 var(--mono); background: color-mix(in srgb, var(--dc) 12%, transparent); border: 1px solid color-mix(in srgb, var(--dc) 32%, transparent); }
.ex-path h3 { margin: 0 0 6px; font: 680 20px/1.2 var(--display); letter-spacing: -.02em; color: var(--ink); }
.ex-path > p { margin: 0 0 14px; color: var(--ink-2); font: 450 14.5px/1.5 var(--sans); }
/* the journey: numbered stops on one line in the domain's colour */
.ex-steps { position: relative; display: grid; gap: 2px; margin: 0 0 14px; padding: 0; list-style: none; }
.ex-steps::before { content: ''; position: absolute; left: 15px; top: 18px; bottom: 18px; width: 2px; border-radius: 2px;
  background: linear-gradient(180deg, var(--dc), color-mix(in srgb, var(--dc) 20%, transparent)); }
.ex-steps a { position: relative; display: flex; align-items: center; gap: 12px; min-height: 40px; padding: 7px 10px 7px 8px; border-radius: 12px; color: var(--ink); text-decoration: none; font: 520 14.5px/1.3 var(--sans); }
.ex-steps a:hover { background: color-mix(in srgb, var(--dc) 10%, transparent); }
.ex-step-dot { flex: none; position: relative; width: 16px; height: 16px; margin-left: 0; border-radius: 50%; background: var(--card); border: 2px solid var(--dc); }
.ex-steps li:first-child .ex-step-dot { background: var(--dc); box-shadow: 0 0 0 4px color-mix(in srgb, var(--dc) 20%, transparent), 0 0 14px var(--dc); }
.ex-step-text { flex: 1; min-width: 0; }
.ex-step-text .sx-id { margin-right: 7px; }
.ex-step-min { flex: none; color: var(--muted); font: 500 12px/1 var(--mono); }
.ex-steps .sx-diff { flex: none; }
.ex-path-go { display: inline-flex; align-items: center; gap: 8px; align-self: flex-start; margin-top: auto; min-height: 40px; padding: 0 16px; border-radius: var(--r-pill);
  color: var(--ink); font: 600 14px/1 var(--sans); text-decoration: none; background: color-mix(in srgb, var(--dc) 14%, transparent); border: 1px solid color-mix(in srgb, var(--dc) 45%, transparent);
  transition: box-shadow .25s var(--ease), background .2s; }
.ex-path-go .sx-mini { color: var(--dc); }
.ex-path-go:hover { background: color-mix(in srgb, var(--dc) 22%, transparent); box-shadow: 0 10px 26px -14px var(--dc); }
.ex-path-go:hover .ex-go { transform: translateX(3px); }

/* problems by difficulty */
.ex-ladder { display: grid; gap: 6px; margin: 0 0 14px; padding: 0; list-style: none; }
.ex-ladder a { display: grid; grid-template-columns: 10px 66px minmax(0, 1fr) 40px; align-items: center; gap: 10px; min-height: 30px; padding: 2px 8px; border-radius: 10px; color: var(--ink-2); text-decoration: none; font: 560 13px/1 var(--sans); }
.ex-ladder a:hover { background: color-mix(in srgb, var(--ink) 6%, transparent); color: var(--ink); }
.ex-ladder small { text-align: right; color: var(--ink); font: 600 12.5px/1 var(--mono); }
.ex-bar { display: block; height: 8px; border-radius: 8px; background: color-mix(in srgb, var(--ink) 8%, transparent); position: relative; overflow: hidden; }
.ex-bar::after { content: ''; position: absolute; inset: 0 auto 0 0; width: var(--w, 0%); border-radius: inherit; background: linear-gradient(90deg, color-mix(in srgb, var(--bar, var(--dc, var(--accent))) 70%, transparent), var(--bar, var(--dc, var(--accent)))); box-shadow: 0 0 10px color-mix(in srgb, var(--bar, var(--dc, var(--accent))) 55%, transparent); }
.ex-ladder li:nth-child(1) a { --bar: var(--good); } .ex-ladder li:nth-child(2) a { --bar: var(--warn); }
.ex-ladder li:nth-child(3) a { --bar: var(--bad); } .ex-ladder li:nth-child(4) a { --bar: var(--ch-sva); }

/* ---------- a: domain x type matrix ---------- */
.ex-matrix-wrap { border-radius: 22px; overflow: hidden; }
.ex-matrix { width: 100%; border-collapse: collapse; font: 500 14px/1.3 var(--sans); color: var(--ink); }
.ex-matrix th, .ex-matrix td { padding: 0; text-align: left; border-bottom: 1px solid color-mix(in srgb, var(--rule) 80%, transparent); }
.ex-matrix thead th { padding: 14px 18px 10px; color: var(--muted); font: 600 12px/1 var(--sans); letter-spacing: .03em; text-transform: uppercase; }
.ex-matrix tbody tr:last-child th, .ex-matrix tbody tr:last-child td { border-bottom-color: color-mix(in srgb, var(--ink) 16%, transparent); }
.ex-matrix tfoot th, .ex-matrix tfoot td { border-bottom: 0; }
.ex-matrix tfoot th { padding: 14px 18px; color: var(--muted); font: 600 13px/1 var(--sans); }
.ex-matrix a { display: flex; align-items: center; gap: 14px; min-height: 54px; padding: 0 18px; color: inherit; text-decoration: none; transition: background .15s; }
.ex-matrix tbody th a { font: 620 15px/1.2 var(--sans); gap: 10px; }
.ex-matrix tbody tr:hover { background: color-mix(in srgb, var(--dc) 7%, transparent); }
.ex-matrix td a:hover, .ex-matrix th a:hover { background: color-mix(in srgb, var(--dc, var(--accent)) 12%, transparent); }
.ex-matrix td a span, .ex-matrix tfoot a { font: 620 15px/1 var(--mono); min-width: 3ch; }
.ex-matrix td a .ex-bar { flex: 1; max-width: 220px; }
.ex-matrix td { width: 30%; }
.ex-matrix td.ex-col-mod { width: 12%; }
.ex-dom-short { display: none; }

/* ---------- New on ASIC Point ---------- */
.ex-new { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.ex-new-strip { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.ex-new-card { position: relative; display: flex; flex-direction: column; gap: 8px; height: 100%; padding: 18px; border-radius: 20px; color: var(--ink); text-decoration: none; overflow: hidden;
  transition: transform .22s var(--ease), border-color .2s, box-shadow .25s var(--ease); }
.ex-new-card::after { content: ''; position: absolute; right: -30px; top: -30px; width: 110px; height: 110px; border-radius: 50%; background: radial-gradient(closest-side, color-mix(in srgb, var(--dc) 30%, transparent), transparent); pointer-events: none; }
.ex-new-card strong { font: 650 16.5px/1.25 var(--display); letter-spacing: -.015em; }
.ex-new-blurb { color: var(--ink-2); font: 450 13.5px/1.5 var(--sans); }
.ex-new-card small { margin-top: auto; color: var(--muted); font: 600 12px/1 var(--mono); }
.ex-new-pill { align-self: flex-start; padding: 4px 9px; border-radius: var(--r-pill); color: var(--on-accent); background: var(--accent); font: 700 10.5px/1 var(--sans); letter-spacing: .06em; text-transform: uppercase; box-shadow: 0 0 14px color-mix(in srgb, var(--accent) 55%, transparent); }

/* ---------- topics and named views ---------- */
.ex-duo { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; }
.ex-duo .ex-section + .ex-section { margin-top: 0; }
.ex-topics, .ex-views { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.ex-topics .sx-chip small, .ex-view small { font: 600 11px/1 var(--mono); color: var(--muted); }
.ex-view { display: inline-flex; align-items: center; gap: 8px; min-height: 38px; padding: 0 14px; border-radius: var(--r-pill); color: var(--ink); text-decoration: none; font: 560 13.5px/1.2 var(--sans);
  border: 1px solid color-mix(in srgb, var(--accent) 34%, transparent); background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 12%, var(--card)), color-mix(in srgb, var(--accent) 5%, var(--card)));
  transition: box-shadow .25s var(--ease), border-color .2s; }
.ex-view .sx-mini { color: var(--accent); width: 14px; height: 14px; }
.ex-view:hover { border-color: color-mix(in srgb, var(--accent) 65%, transparent); box-shadow: 0 10px 24px -14px color-mix(in srgb, var(--accent) 80%, transparent); }

/* the named view a reader opened */
.sp-view { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin: 0 0 22px; padding: 14px 18px; border-radius: 18px;
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 12%, var(--card)), color-mix(in srgb, var(--accent) 5%, var(--card)));
  box-shadow: 0 18px 40px -28px color-mix(in srgb, var(--accent) 80%, transparent); }
.sp-view-tag { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font: 600 12px/1 var(--sans); letter-spacing: .03em; text-transform: uppercase; }
.sp-view-tag .sx-mini { color: var(--accent); }
.sp-view strong { font: 660 17px/1.25 var(--display); letter-spacing: -.015em; color: var(--ink); }
.sp-view-copy { margin-left: auto; min-height: 34px; padding: 0 14px; border-radius: var(--r-pill); border: 1px solid color-mix(in srgb, var(--ink) 18%, transparent); background: var(--card); color: var(--ink); font: 600 13px/1 var(--sans); cursor: pointer; }
.sp-view-back { color: var(--link); font: 600 13px/1 var(--sans); }

/* focus */
:is(.ex a, .sp-view-copy, .sp-view-back, .nf-form button):focus-visible { outline: var(--focus-w) solid var(--focus); outline-offset: 3px; }

/* ---------- the 404 page's search ---------- */
.nf { max-width: 760px; margin: 0 auto; padding: clamp(36px, 8vw, 96px) var(--gutter) 96px; text-align: center; }
.nf-code { display: inline-flex; align-items: center; gap: 10px; margin: 0; padding: 6px 12px; border-radius: var(--r-pill); color: var(--ink-2); font: 600 12.5px/1 var(--mono);
  border: 1px solid color-mix(in srgb, var(--ink) 14%, transparent); background: color-mix(in srgb, var(--card) 70%, transparent); }
.nf-code::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--bad); box-shadow: 0 0 10px var(--bad); }
.nf h1 { margin: 18px 0 12px; font: 720 clamp(34px, 5vw, 54px)/1.05 var(--display); letter-spacing: -.04em; color: var(--ink); }
.nf-lead { margin: 0 auto 28px; max-width: 46ch; color: var(--ink-2); font: 450 17px/1.55 var(--sans); }
.nf-trace { display: block; width: min(420px, 100%); height: 46px; margin: 0 auto 26px; color: var(--accent); }
.nf-trace path { fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.nf-trace .nf-x { stroke: var(--bad); stroke-dasharray: 4 5; }
.nf-form { display: flex; align-items: center; gap: 10px; height: 64px; padding: 0 8px 0 22px; border-radius: var(--r-pill); border: 1px solid color-mix(in srgb, var(--ink) 16%, transparent);
  background: var(--lit-panel, var(--card)); box-shadow: var(--lit-shadow, none), 0 30px 80px -42px color-mix(in srgb, var(--accent) 70%, transparent); text-align: left; }
.nf-form:focus-within { border-color: color-mix(in srgb, var(--accent) 60%, transparent); box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 14%, transparent), var(--lit-shadow, none); }
.nf-form:has(input:focus-visible) { border-color: var(--focus); }
.nf-form .sp-glass { flex: none; color: var(--accent); stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.nf-form input { flex: 1; min-width: 0; height: 100%; border: 0; outline: 0; background: transparent; color: var(--ink); font: 520 18px/1 var(--sans); }
.nf-form input::placeholder { color: var(--muted); opacity: 1; }
.nf-form button { flex: none; min-height: 48px; white-space: nowrap; }
.nf-links { margin: 22px 0 0; color: var(--muted); font: 500 14.5px/1.6 var(--sans); }
.nf-links a { color: var(--link); }

/* ---------- narrower screens ---------- */
@media (max-width: 900px) {
  .ex-paths, .ex-duo { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
  .sp-kicker { flex-wrap: wrap; justify-content: center; row-gap: 6px; }
  .ex-path { padding: 18px 16px 16px; border-radius: 20px; }
  .ex-steps a { font-size: 14px; padding-right: 6px; }
  .ex-matrix thead th { padding: 12px 12px 8px; }
  .ex-matrix a { padding: 0 12px; gap: 10px; min-height: 50px; }
  .ex-matrix tfoot th { padding: 12px; }
  .ex-col-mod { display: none; }
  .ex-matrix td { width: 34%; }
  .ex-matrix td a .ex-bar { display: none; }
  .ex-dom-long { display: none; }
  .ex-dom-short { display: inline; }
  .nf-form { height: auto; flex-wrap: wrap; padding: 10px; border-radius: 26px; }
  .nf-form .sp-glass { margin-left: 8px; }
  .nf-form input { height: 46px; font-size: 17px; flex-basis: calc(100% - 50px); }
  .nf-form button { width: 100%; }
  .sp-view-copy { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .ex-new-card, .ex-go, .ex-path-go { transition: none; }
}