/* Shared chrome: tab bar, score chip, page transitions, case study reader.
   Every page is dark unless <html data-theme="light"> (set in each page's <head>). */
:root {
  --xp-h: 44px; color-scheme: dark;
  --xp-bg: #0b0b0c; --xp-text: #ededed; --xp-line: rgba(255,255,255,0.08); --xp-well: rgba(255,255,255,0.06);
  --xp-tab: #a8a8a8; --xp-num: #7f7f7f; --xp-hover: #ffffff; --xp-on-bg: #ededed; --xp-on-text: #000000; --xp-on-num: #777777; --xp-hint: #8a8a8a;
  /* score popover */
  --pop-bg: #16181b; --pop-text: #e8eaed; --pop-line: #2e3238; --pop-soft: #24282d; --pop-track: #2a2e34; --pop-muted: #9ba4af; --pop-rule: #aeb7c2;
  --pop-pos: #2bc4aa; --pop-neg: #ff6b6f; --pop-shadow: 0 16px 48px rgba(0,0,0,0.55);
  /* the site accent (burnt amber), for the score tooltip */
  --xp-accent: #f0a429; --xp-accent-ink: #f0a429;
}
:root[data-theme="light"] {
  color-scheme: light;
  --xp-bg: #f4f3ef; --xp-text: #121316; --xp-line: rgba(0,0,0,0.08); --xp-well: rgba(0,0,0,0.04);
  --xp-tab: #55585f; --xp-num: #6f7278; --xp-hover: #000000; --xp-on-bg: #121316; --xp-on-text: #ffffff; --xp-on-num: #a9acb1; --xp-hint: #6a6d74;
  --pop-bg: #f8f7f4; --pop-text: #1c2733; --pop-line: #dfe3eb; --pop-soft: #eef1f5; --pop-track: #eaf0f6; --pop-muted: #66768a; --pop-rule: #516f90;
  --pop-pos: #00a38d; --pop-neg: #e5484d; --pop-shadow: 0 16px 48px rgba(28,39,51,0.18);
  --xp-accent: #e8971c; --xp-accent-ink: #9a5800;
}
@view-transition { navigation: auto; }
::view-transition-old(root), ::view-transition-new(root) { animation-duration: 0.35s; }

.xp-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--xp-h);
  display: flex; align-items: center; gap: 16px; padding: 0 14px;
  background: var(--xp-bg); color: var(--xp-text); border-bottom: 1px solid var(--xp-line);
  font: 400 13px/1 "Geist", "Inter", system-ui, sans-serif; -webkit-font-smoothing: antialiased;
  view-transition-name: xpbar;
}
.xp-brand { display: inline-flex; align-items: center; gap: 9px; color: var(--xp-text); text-decoration: none; white-space: nowrap; }
.xp-brand span { width: 24px; height: 24px; border-radius: 6px; display: grid; place-items: center; background: var(--xp-on-bg); color: var(--xp-on-text); font: 600 10px/1 "Geist Mono", ui-monospace, monospace; letter-spacing: 0.02em; }
.xp-brand b { font-weight: 500; }
.xp-brand:hover { text-decoration: none; }
.xp-tabs { display: flex; gap: 2px; padding: 3px; margin: 0 auto; border-radius: 9px; background: var(--xp-well); border: 1px solid var(--xp-line); }
.xp-tab { display: inline-flex; align-items: center; gap: 7px; height: 28px; padding: 0 12px; border-radius: 6px; color: var(--xp-tab); text-decoration: none; white-space: nowrap; transition: color 0.2s, background 0.2s; }
.xp-tab i { font: normal 400 10px/1 "Geist Mono", ui-monospace, monospace; color: var(--xp-num); }
.xp-tab:hover { color: var(--xp-hover); text-decoration: none; }
.xp-tab[aria-selected="true"] { background: var(--xp-on-bg); color: var(--xp-on-text); }
.xp-tab[aria-selected="true"] i { color: var(--xp-on-num); }
.xp-hint { font-size: 12px; color: var(--xp-hint); white-space: nowrap; }
/* light / dark switch: names the mode it switches to */
.xp-theme { flex: none; display: inline-flex; align-items: center; gap: 7px; height: 28px; padding: 0 11px 0 9px; border-radius: 999px; border: 1px solid var(--xp-line); background: transparent; color: var(--xp-tab); font: 500 12px/1 inherit; white-space: nowrap; cursor: pointer; transition: color 0.2s, border-color 0.2s; }
.xp-theme:hover { color: var(--xp-hover); border-color: currentColor; }
.xp-theme svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.xp-theme .moon, [data-theme="light"] .xp-theme .sun { display: none; }
[data-theme="light"] .xp-theme .moon { display: block; }
.xp-theme:focus-visible { outline: 2px solid var(--xp-text); outline-offset: 2px; }
.xp-s { display: none; }

/* Lead score tooltip: what the score means, wherever a score shows (Lead.scoreTip) */
.score-q { flex: none; width: 18px; height: 18px; margin-block: -4px; display: inline-grid; place-items: center; vertical-align: middle; padding: 0; border-radius: 50%; border: 1px solid color-mix(in srgb, currentColor 40%, transparent); background: transparent; color: inherit; font: 500 11px/1 "Geist Mono", ui-monospace, monospace; letter-spacing: 0; text-transform: none; cursor: help; transition: border-color 0.2s, color 0.2s, background 0.2s; }
.score-q { position: relative; }
.score-q::after { content: ""; position: absolute; inset: -10px; } /* a finger-sized target */
.score-q:hover, .score-q[aria-expanded="true"] { border-color: var(--xp-accent-ink); color: var(--xp-accent-ink); background: color-mix(in srgb, var(--xp-accent) 12%, transparent); }
.score-q:focus-visible { outline: 2px solid var(--xp-accent-ink); outline-offset: 2px; }
.score-tip { position: fixed; top: 0; left: 0; z-index: 300; width: min(300px, calc(100vw - 24px)); padding: 14px 16px 16px; border-radius: 14px; background: var(--pop-bg); border: 1px solid var(--pop-line); box-shadow: var(--pop-shadow); color: var(--pop-muted); font: 400 13px/1.5 "Geist", system-ui, sans-serif; letter-spacing: 0; text-align: left; text-transform: none; pointer-events: none; opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity 0.2s, transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0.2s; }
.score-tip.above { transform: translateY(6px); }
.score-tip.on { opacity: 1; visibility: visible; transform: none; }
.score-tip.pinned { pointer-events: auto; }
.score-tip::before { content: ""; position: absolute; left: calc(var(--arrow, 24px) - 5px); top: -6px; width: 10px; height: 10px; background: var(--pop-bg); border-left: 1px solid var(--pop-line); border-top: 1px solid var(--pop-line); transform: rotate(45deg); }
.score-tip.above::before { top: auto; bottom: -6px; transform: rotate(225deg); }
.score-tip b { display: block; margin-bottom: 4px; font: 500 14.5px/1.3 "Geist", system-ui, sans-serif; letter-spacing: -0.01em; color: var(--pop-text); }
.score-tip-stage { display: flex; justify-content: space-between; margin-top: 14px; font: 500 11px/1 "Geist Mono", ui-monospace, monospace; letter-spacing: 0.04em; text-transform: uppercase; }
.score-tip-now { margin-top: 6px; color: var(--pop-text); }
.score-tip-now em { font-style: normal; font-weight: 500; color: var(--xp-accent-ink); }
.score-tip-track { display: flex; gap: 3px; margin-top: 8px; }
.score-tip-track i { flex: 1; height: 6px; border-radius: 3px; background: var(--pop-track); transition: background 0.4s; }
.score-tip-track i.on { background: var(--xp-accent); }
.score-tip-note { margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--pop-soft); font-size: 12px; }
@media (prefers-reduced-motion: reduce) { .score-tip, .score-tip.above { transform: none; } }

/* Score chip + popover (light experiences) */
.lead-slot { position: relative; }
.lead-chip { display: inline-flex; align-items: center; gap: 8px; height: 32px; padding: 0 12px; border-radius: 999px; border: 1px solid var(--chip-line, #d6dbe3); background: var(--chip-bg, #fff); color: var(--chip-text, #1c2733); font: 500 13px/1 inherit; cursor: pointer; white-space: nowrap; transition: border-color 0.2s, box-shadow 0.3s; }
.lead-chip:hover { border-color: var(--chip-accent, #ff7a59); }
.lead-chip-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--chip-accent, #ff7a59); box-shadow: 0 0 0 3px color-mix(in srgb, var(--chip-accent, #ff7a59) 22%, transparent); }
.lead-chip-score { padding: 3px 7px; border-radius: 999px; background: var(--chip-text, #1c2733); color: var(--chip-bg, #fff); font-variant-numeric: tabular-nums; font-size: 12px; transition: background 0.3s; }
.lead-chip.up { box-shadow: 0 0 0 4px rgba(0,189,165,0.25); }
.lead-chip.up .lead-chip-score { background: #00a38d; }
.lead-chip.down { box-shadow: 0 0 0 4px rgba(242,84,91,0.25); }
.lead-chip.down .lead-chip-score { background: #e5484d; }
.lead-pop { position: absolute; top: calc(100% + 10px); right: 0; z-index: 90; width: 330px; max-height: min(560px, calc(100vh - 120px)); overflow-y: auto; padding: 18px; border-radius: 10px; background: var(--pop-bg); color: var(--pop-text); border: 1px solid var(--pop-line); box-shadow: var(--pop-shadow); text-align: left; font-size: 13px; animation: pop-in 0.25s cubic-bezier(0.2, 0.8, 0.2, 1); }
.lead-pop[hidden] { display: none; }
@keyframes pop-in { from { opacity: 0; transform: translateY(-6px); } }
.lead-pop-head { display: flex; justify-content: space-between; align-items: flex-end; }
.lead-pop-label .score-q { margin-left: 6px; }
.lead-pop-label { font-size: 11px; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; color: var(--pop-muted); }
.lead-pop-num b { font-size: 40px; font-weight: 400; line-height: 1; font-variant-numeric: tabular-nums; }
.lead-pop-num small { color: var(--pop-muted); margin-left: 2px; }
.lead-pop-stage { padding: 4px 10px; border-radius: 999px; background: color-mix(in srgb, var(--chip-accent, #ff7a59) 16%, var(--pop-bg)); color: var(--pop-text); font-weight: 500; }
.lead-chev { display: flex; gap: 3px; margin: 14px 0 4px; }
.lead-chev span { flex: 1; height: 8px; background: var(--pop-track); clip-path: polygon(0 0, calc(100% - 4px) 0, 100% 50%, calc(100% - 4px) 100%, 0 100%, 4px 50%); transition: background 0.5s; }
.lead-chev span:first-child { clip-path: polygon(0 0, calc(100% - 4px) 0, 100% 50%, calc(100% - 4px) 100%, 0 100%); }
.lead-chev span.on { background: var(--chip-accent, #ff7a59); }
.lead-chev-labels { display: flex; justify-content: space-between; font-size: 10px; color: var(--pop-muted); }
.lead-live { margin-left: 6px; color: var(--pop-pos); text-transform: none; letter-spacing: 0; }
.lead-log { list-style: none; margin-top: 6px; }
.lead-log li { display: grid; grid-template-columns: 34px 1fr auto; gap: 8px; padding: 7px 0; border-top: 1px solid var(--pop-soft); }
.lead-log b { font-weight: 600; font-variant-numeric: tabular-nums; }
.lead-log .p b { color: var(--pop-pos); }
.lead-log .m b { color: var(--pop-neg); }
.lead-log time { color: var(--pop-muted); font-size: 11px; }
.lead-log .empty { display: block; color: var(--pop-muted); border: 0; }
.lead-rules { margin-top: 10px; border-top: 1px solid var(--pop-soft); padding-top: 10px; }
.lead-rules summary { cursor: pointer; font-weight: 500; }
.lead-rules ul { list-style: none; margin-top: 8px; }
.lead-rules li { display: flex; justify-content: space-between; gap: 10px; padding: 3px 0; color: var(--pop-rule); }
.lead-rules b.p { color: var(--pop-pos); } .lead-rules b.m { color: var(--pop-neg); }

@media (max-width: 1180px) { .xp-hint { display: none; } }
@media (max-width: 1040px) { .xp-l { display: none; } .xp-s { display: inline; } }
@media (max-width: 860px) {
  .xp-bar { gap: 8px; padding: 0 8px; }
  .xp-brand b, .xp-hint { display: none; }
  .xp-tabs { margin: 0; flex: 1; justify-content: space-between; }
  .xp-tab { flex: 1; justify-content: center; padding: 0 6px; font-size: 12px; }
  .xp-tab i, .xp-l { display: none; }
  .xp-s { display: inline; }
  .xp-theme { width: 30px; padding: 0; justify-content: center; }
  .xp-theme span { display: none; }
  .lead-pop { position: fixed; top: auto; bottom: 12px; left: 12px; right: 12px; width: auto; max-height: 70vh; }
}
@media (max-width: 420px) {
  .xp-tab { font-size: 11px; padding: 0 4px; }
}
@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root), ::view-transition-new(root) { animation: none; }
}

/* Placeholder guard: hide links whose target isn't filled in yet (set by lead.js). */
.no-li [data-award="li"], .no-cal [data-award="cal"], .no-cv [data-award="cv"] { display: none !important; }
.no-cv li:has(> a[data-award="cv"]) { display: none !important; }

/* ── Case study reader (shared by every page) ─────────────
   Pages theme it by setting the --cs-* variables in their own stylesheet. */
:root {
  --cs-bg: #ffffff; --cs-surface: #f5f6f8; --cs-ink: #111418; --cs-text: #2b2f36; --cs-muted: #5f6672;
  --cs-line: #e4e6ea; --cs-accent: #2448ff; --cs-on-accent: #ffffff; --cs-crit: #d93a3f;
  --cs-font: inherit; --cs-display: "Eczar", Georgia, serif; --cs-mono: "Geist Mono", ui-monospace, monospace;
}
html.cs-open { overflow: hidden; scrollbar-gutter: stable; }
.cs-scrim { position: fixed; inset: 0; z-index: 120; background: rgba(8,10,14,0.5); opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s; }
.cs { position: fixed; top: 0; right: 0; bottom: 0; z-index: 121; width: min(920px, 100vw); display: flex; flex-direction: column; background: var(--cs-bg); color: var(--cs-text); border-left: 1px solid var(--cs-line); box-shadow: -24px 0 64px rgba(0,0,0,0.2); transform: translateX(100%); visibility: hidden; transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0.45s; font-family: var(--cs-font); text-align: left; -webkit-font-smoothing: antialiased; }
.cs-open .cs-scrim { opacity: 1; visibility: visible; }
.cs-open .cs { transform: none; visibility: visible; }
.cs-bar { flex: none; display: flex; align-items: center; gap: 10px; height: 56px; padding: 0 14px 0 32px; border-bottom: 1px solid var(--cs-line); }
.cs-crumb { flex: 1; min-width: 0; font: 500 11.5px/1 var(--cs-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--cs-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cs-arrows { display: flex; gap: 4px; }
.cs-bar button { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 8px; border: 1px solid var(--cs-line); background: transparent; color: var(--cs-ink); font: 400 15px/1 system-ui, sans-serif; cursor: pointer; transition: background 0.15s, border-color 0.15s; }
.cs-bar button:hover:not(:disabled) { background: var(--cs-surface); }
.cs-bar button:disabled { opacity: 0.3; cursor: default; }
.cs-bar .cs-x { font-size: 20px; margin-left: 6px; }
.cs-body { flex: 1; overflow-y: auto; overscroll-behavior: contain; padding: 40px 56px 72px; }
.cs-kicker { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; font: 500 12px/1 var(--cs-mono); letter-spacing: 0.03em; color: var(--cs-muted); }
.cs-kicker span { padding: 5px 9px; border-radius: 5px; background: var(--cs-accent); color: var(--cs-on-accent); }
.cs h2 { margin: 20px 0 16px; max-width: 28ch; font: 600 clamp(26px, 3.1vw, 36px)/1.16 var(--cs-display); letter-spacing: -0.01em; color: var(--cs-ink); text-wrap: balance; }
.cs-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.cs-tags span { padding: 4px 8px; border-radius: 5px; background: var(--cs-surface); font: 400 11.5px/1.3 var(--cs-mono); color: var(--cs-muted); }
.cs-sum { margin-top: 24px; max-width: 66ch; font-size: 17px; line-height: 1.65; color: var(--cs-ink); }
.cs-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1px; margin: 30px 0 4px; background: var(--cs-line); border: 1px solid var(--cs-line); border-radius: 12px; overflow: hidden; }
.cs-stats div { padding: 18px 20px; background: var(--cs-bg); }
.cs-stats dt { font: 600 30px/1.1 var(--cs-display); letter-spacing: -0.01em; color: var(--cs-ink); font-variant-numeric: tabular-nums; }
.cs-stats dd { margin: 8px 0 0; font-size: 13px; line-height: 1.45; color: var(--cs-muted); }
.cs-sec { margin-top: 44px; }
.cs-sec h3 { margin: 0 0 14px; font: 600 21px/1.3 var(--cs-display); letter-spacing: -0.005em; color: var(--cs-ink); }
.cs-sec p { max-width: 68ch; margin: 0 0 14px; font-size: 15.5px; line-height: 1.72; }
/* screenshots sit inside the story, wider than the text column */
.cs-figs { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; margin: 24px 0 28px; }
.cs-figs.pair { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cs-figs figure { margin: 0; display: flex; flex-direction: column; border: 1px solid var(--cs-line); border-radius: 10px; overflow: hidden; background: var(--cs-surface); }
.cs-shot { display: block; width: 100%; padding: 0; border: 0; background: #fff; cursor: zoom-in; }
.cs-shot img { display: block; width: 100%; height: auto; max-height: 520px; object-fit: cover; object-position: top left; transition: opacity 0.2s; }
.cs-figs.pair .cs-shot img { max-height: 340px; }
.cs-shot:hover img { opacity: 0.88; }
.cs-figs figcaption { flex: 1; padding: 11px 14px 13px; border-top: 1px solid var(--cs-line); font-size: 13px; line-height: 1.45; color: var(--cs-muted); }
.cs-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 40px; }
.cs-pager button { padding: 15px 18px; border-radius: 10px; border: 1px solid var(--cs-line); background: transparent; color: var(--cs-ink); font: inherit; text-align: left; cursor: pointer; transition: border-color 0.2s, background 0.2s; }
.cs-pager button:hover { border-color: var(--cs-accent); background: var(--cs-surface); }
.cs-pager .next { grid-column: 2; text-align: right; }
.cs-pager small { display: block; margin-bottom: 7px; font: 500 11px/1 var(--cs-mono); letter-spacing: 0.05em; text-transform: uppercase; color: var(--cs-muted); }
.cs-pager span { font-size: 14px; line-height: 1.4; }
.cs-ref { display: inline; padding: 0; border: 0; background: none; color: var(--cs-accent); font: inherit; text-decoration: underline; text-underline-offset: 2px; cursor: pointer; }
.cs :focus-visible { outline: 2px solid var(--cs-accent); outline-offset: 2px; }
.cs-zoom { position: fixed; inset: 0; z-index: 130; display: grid; place-items: center; padding: 64px 24px 24px; background: rgba(8,9,12,0.94); opacity: 0; visibility: hidden; transition: opacity 0.25s, visibility 0.25s; cursor: zoom-out; }
.cs-zoom.on { opacity: 1; visibility: visible; }
.cs-zoom figure { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 14px; max-width: 100%; }
.cs-zoom img { max-width: min(1600px, 100%); max-height: calc(100vh - 150px); object-fit: contain; border-radius: 8px; background: #fff; }
.cs-zoom figcaption { max-width: 80ch; color: #d6d8dd; font: 400 14px/1.5 system-ui, sans-serif; text-align: center; }
.cs-zoom .cs-x { position: absolute; top: 14px; right: 14px; width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.25); background: transparent; color: #fff; font-size: 22px; cursor: pointer; }
@media (max-width: 720px) {
  .cs-bar { padding: 0 10px 0 18px; }
  .cs-body { padding: 26px 18px 56px; }
  .cs-figs.pair { grid-template-columns: 1fr; }
  .cs-sec h3 { font-size: 19px; }
  .cs-stats dt { font-size: 26px; }
  .cs-pager { grid-template-columns: 1fr; }
  .cs-pager .next { grid-column: auto; text-align: left; }
}
@media (prefers-reduced-motion: reduce) { .cs, .cs-scrim, .cs-zoom { transition: none; } }