/* How Poker Works — shared design system
   Editorial, Tufte-inspired. Casino-green accent on warm cream. */

:root{
  --ink:#1b1b1b;
  --muted:#6f6a60;
  --rule:#e4e0d6;
  --bg:#faf8f3;
  --card:#ffffff;
  --felt:#0f5132;      /* deep table green */
  --felt-soft:#e7f0ea;
  --red:#b3001b;       /* hearts / diamonds, highlights */
  --good:#1a7a3c; --good-bg:#eaf6ee;
  --bad:#a3261f;  --bad-bg:#fbecea;
  --maxw:720px;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--serif); color:var(--ink); background:var(--bg);
  margin:0; line-height:1.62; -webkit-font-smoothing:antialiased;
}
a{ color:var(--felt); text-decoration:underline; text-underline-offset:2px; text-decoration-thickness:1px; }
a:hover{ color:#0a3d25; }
img{max-width:100%}

/* ---- layout ---- */
.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 1.25rem; }
.wide{ max-width:980px; }

/* ---- top bar ---- */
.site-head{ border-bottom:1px solid var(--rule); background:rgba(250,248,243,.85); backdrop-filter:saturate(140%) blur(6px); position:sticky; top:0; z-index:20; }
.site-head .bar{ display:flex; align-items:center; justify-content:space-between; padding:.9rem 0; }
.brand{ display:flex; align-items:center; gap:.55rem; font-family:var(--serif); font-weight:600; font-size:1.2rem; letter-spacing:-.01em; color:var(--ink); text-decoration:none; }
.brand .pip{ display:inline-grid; place-items:center; width:1.7rem; height:1.7rem; background:var(--felt); color:#fff; border-radius:6px; font-size:1rem; }
.nav{ display:flex; gap:1.4rem; font-family:var(--sans); font-size:.86rem; }
.nav a{ color:var(--muted); text-decoration:none; }
.nav a:hover{ color:var(--ink); }

/* ---- generic type ---- */
.kicker{ font-family:var(--sans); font-size:.72rem; text-transform:uppercase; letter-spacing:.14em; color:var(--muted); }
h1{ font-size:2.4rem; line-height:1.1; letter-spacing:-.02em; margin:.4rem 0 .6rem; }
h2{ font-size:1.35rem; margin:2.4rem 0 .7rem; padding-bottom:.3rem; border-bottom:1px solid var(--rule); }
h3{ font-size:1.05rem; margin:1.4rem 0 .4rem; }
p{ margin:.75rem 0; }
.lede{ font-size:1.2rem; color:#33312c; }
.muted{ color:var(--muted); }

/* ---- buttons ---- */
.btn{ display:inline-block; font-family:var(--sans); font-size:.92rem; font-weight:600; text-decoration:none;
      background:var(--felt); color:#fff; padding:.7rem 1.3rem; border-radius:7px; border:1px solid var(--felt); transition:.15s; }
.btn:hover{ background:#0a3d25; color:#fff; }
.btn.ghost{ background:transparent; color:var(--felt); }
.btn.ghost:hover{ background:var(--felt-soft); color:var(--felt); }

/* ---- cards / curriculum ---- */
.card{ background:var(--card); border:1px solid var(--rule); border-radius:10px; padding:1.2rem 1.3rem; box-shadow:0 1px 2px rgba(0,0,0,.04); }
.levels{ display:grid; gap:1rem; margin:1.4rem 0; }
.level{ display:grid; grid-template-columns:auto 1fr; gap:1rem; align-items:start; }
.level .badge{ font-family:var(--sans); font-weight:700; font-size:.8rem; color:#fff; background:var(--felt); width:2.6rem; height:2.6rem; border-radius:8px; display:grid; place-items:center; }
.level.soon .badge{ background:#c9c4b5; }
.level h3{ margin:.1rem 0 .2rem; }
.level ul{ margin:.4rem 0 0; padding-left:1.1rem; font-size:.95rem; }
.level.soon{ opacity:.72; }
.tag{ font-family:var(--sans); font-size:.66rem; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); border:1px solid var(--rule); border-radius:999px; padding:.1rem .5rem; vertical-align:middle; }

/* ---- cards (suit glyphs) ---- */
.cards{ font-family:"DejaVu Sans",var(--sans); letter-spacing:.06em; white-space:nowrap; }
.s-red{ color:var(--red); }

/* ---- callouts ---- */
.callout{ border-left:3px solid var(--felt); background:var(--felt-soft); padding:.8rem 1.1rem; border-radius:0 6px 6px 0; margin:1.4rem 0; }
.callout.amber{ border-color:#d8a72b; background:#fdf6e3; }

/* ---- breadcrumb ---- */
.crumb{ font-family:var(--sans); font-size:.78rem; color:var(--muted); margin:1.6rem 0 .3rem; }
.crumb a{ color:var(--muted); }

/* ---- lesson list rows (ranks) ---- */
ol.ranks{ list-style:none; counter-reset:r; padding:0; margin:1rem 0; }
ol.ranks li{ counter-increment:r; display:flex; gap:.7rem; align-items:baseline; padding:.5rem .2rem; border-bottom:1px solid var(--rule); }
ol.ranks li::before{ content:counter(r); color:var(--muted); font-variant-numeric:tabular-nums; min-width:1.4rem; text-align:right; font-size:.9rem; }
ol.ranks .nm{ font-weight:600; min-width:9rem; }
ol.ranks .ex{ font-family:"DejaVu Sans",var(--sans); font-size:.95rem; color:#444; }

/* ---- quiz ---- */
.quiz{ background:var(--card); border:1px solid var(--rule); border-radius:10px; padding:1.1rem 1.2rem; margin:1.1rem 0; }
.quiz .q{ font-weight:600; margin:0 0 .7rem; }
.opts{ display:grid; gap:.5rem; }
.opt{ font:inherit; text-align:left; padding:.55rem .8rem; border:1px solid #d8d5cc; background:#fff; border-radius:6px; cursor:pointer; transition:.12s; }
.opt:hover{ border-color:#9c988c; background:#fcfbf8; }
.opt:disabled{ cursor:default; }
.opt.correct{ background:var(--good-bg); border-color:var(--good); color:var(--good); font-weight:600; }
.opt.wrong{ background:var(--bad-bg); border-color:var(--bad); color:var(--bad); }
.fb{ margin-top:.6rem; font-size:.92rem; min-height:1.2rem; }
.fb.ok{ color:var(--good); } .fb.no{ color:var(--bad); }
.score{ font-size:1.05rem; font-weight:600; margin-top:1rem; }

/* ---- lesson header illustration ---- */
.lesson-banner{ margin:1.5rem 0 1.2rem; }
.lesson-banner img{ display:block; width:100%; height:auto; aspect-ratio:5/2; object-fit:cover;
  border:1px solid var(--rule); border-radius:12px; background:var(--bg); }

/* ---- prev/next ---- */
.pager{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:1rem; margin:2.4rem 0 0; font-family:var(--sans); font-size:.9rem; }
.pager .btn{ font-size:.9rem; }
.pager .next-label{ color:var(--muted); font-weight:400; margin-right:.6rem; }

/* ---- footer ---- */
.site-foot{ border-top:1px solid var(--rule); margin-top:4rem; padding:2rem 0; font-family:var(--sans); font-size:.82rem; color:var(--muted); }
.site-foot a{ color:var(--muted); }
.site-foot .row{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:1rem; }
.rg-note{ max-width:980px; margin:1.1rem auto 0; padding:1rem 1.25rem 0; border-top:1px solid var(--rule);
  font-size:.74rem; color:var(--muted); text-align:center; line-height:1.65; }
.rg-note a{ color:var(--muted); }

/* ---- hero ---- */
.hero{ padding:3.5rem 0 2.5rem; }
.hero .deal{ font-family:"DejaVu Sans",var(--sans); font-size:1.6rem; letter-spacing:.1em; margin-bottom:1rem; }
.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:2.4rem; align-items:center; }
.hero-text .kicker{ margin-bottom:.2rem; }
.slogan{ font-family:var(--serif); font-style:italic; color:var(--felt); font-size:1.3rem; font-weight:500; margin:.1rem 0 .5rem; }
.hero-cta{ margin-top:1.4rem; }
.hero-figure{ margin:0; }
.hero-figure img{ display:block; width:100%; height:auto; border-radius:12px; }
@media (max-width:780px){
  .hero-grid{ grid-template-columns:1fr; gap:1.4rem; }
  .hero-figure{ order:-1; max-width:460px; }
}

@media (max-width:560px){
  h1{font-size:1.9rem}
  .nav{gap:.9rem}
  ol.ranks .nm{min-width:7rem}
}
/* ============================================================
   USER-CONVENIENCE LAYER — adapted from Panda28 (Google Search
   Central docs UX): sticky sub-bar, scroll-spy TOC rail,
   Discuss-with-AI links, anchor-copy, feedback, copy-as-markdown.
   Re-skinned to How Poker Works's cream/green editorial palette.
   --head-h / --subbar-h are measured & set by felt-ux.js.
============================================================ */
:root{ --head-h:55px; --subbar-h:42px; }

/* ---- sub-bar: breadcrumbs + page actions ---- */
.subbar{ position:sticky; top:var(--head-h); z-index:18;
  background:rgba(250,248,243,.92); backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--rule); font-family:var(--sans); }
.subbar-inner{ max-width:980px; margin:0 auto; min-height:var(--subbar-h);
  padding:.35rem 1.25rem; display:flex; align-items:center; gap:1.2rem; }
.subbar .crumb{ margin:0; flex:1; min-width:0; overflow:hidden; white-space:nowrap;
  text-overflow:ellipsis; font-size:.78rem; }
.page-actions{ display:flex; align-items:center; gap:.7rem; flex-shrink:0; }
.feedback{ display:flex; align-items:center; gap:.35rem; font-size:.78rem; color:var(--muted); }
.feedback-btn{ font:inherit; font-size:.95rem; line-height:1; border:0; background:none; cursor:pointer;
  padding:.2rem .35rem; border-radius:5px; transition:background .12s; }
.feedback-btn:hover{ background:var(--felt-soft); }
.feedback-btn.picked{ background:var(--felt-soft); outline:1px solid var(--felt); }
.feedback-thanks{ font-size:.78rem; color:var(--felt); font-weight:600; }
.copy-md{ font:inherit; font-size:.78rem; display:inline-flex; align-items:center; gap:.3rem;
  border:1px solid var(--rule); background:#fff; color:var(--muted); cursor:pointer;
  padding:.25rem .55rem; border-radius:6px; transition:.12s; }
.copy-md:hover{ color:var(--ink); border-color:#9c988c; background:#fcfbf8; }

/* ---- "On this page" TOC rail (wide screens only) ---- */
/* Lesson layout: TOC rail + article as ONE centred group that fills the same
   980px band as the header/sub-bar, so all left/right edges line up.
   felt-ux.js wraps <main> (and the rail) in .lesson-layout. */
.lesson-layout{ max-width:980px; margin:0 auto; }
.lesson-layout > main.wrap{ max-width:720px; margin:0 auto; }
.toc-rail{ display:none; }
@media (min-width:1180px){
  .lesson-layout{ display:grid; grid-template-columns:206px minmax(0,1fr); gap:34px; align-items:start; }
  .lesson-layout > main.wrap{ max-width:none; margin:0; padding-left:0; }
  .toc-rail{ display:block; position:sticky; align-self:start;
    top:calc(var(--head-h) + var(--subbar-h) + 1.6rem);
    max-height:calc(100vh - var(--head-h) - var(--subbar-h) - 3rem); overflow-y:auto;
    padding-left:1.25rem; font-family:var(--sans); }
}
.toc-title{ font-size:.66rem; text-transform:uppercase; letter-spacing:.12em;
  color:var(--muted); font-weight:700; margin:0 0 .5rem; padding-left:.8rem; }
.toc-nav ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column;
  gap:1px; border-left:1px solid var(--rule); }
.toc-nav a{ display:block; padding:.28rem .8rem; margin-left:-1px; font-size:.8rem; line-height:1.35;
  color:var(--muted); text-decoration:none; border-left:2px solid transparent; transition:.12s; }
.toc-nav a:hover{ color:var(--ink); }
.toc-nav li.toc-active a{ color:var(--felt); font-weight:600; border-left-color:var(--felt); }

/* ---- Discuss with AI ---- */
.discuss-ai{ margin:2.4rem 0 0; border:1px solid var(--rule); border-radius:10px;
  background:var(--card); padding:1rem 1.1rem; font-family:var(--sans); }
.toc-rail .discuss-ai{ margin-top:1.5rem; border:0; border-top:1px solid var(--rule);
  border-radius:0; background:none; padding:1.1rem .2rem 0; }
.discuss-ai-title{ display:block; font-size:.66rem; text-transform:uppercase; letter-spacing:.12em;
  color:var(--muted); font-weight:700; margin-bottom:.1rem; }
.discuss-ai-sub{ font-size:.8rem; color:var(--muted); margin:.15rem 0 .6rem; }
.toc-rail .discuss-ai-sub{ display:none; }
.discuss-ai-list{ list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; gap:.4rem; }
.toc-rail .discuss-ai-list{ flex-direction:column; gap:2px; }
.discuss-ai-link{ display:inline-flex; align-items:center; gap:.45rem; padding:.4rem .7rem;
  font-size:.82rem; color:var(--ink); text-decoration:none; border:1px solid var(--rule);
  border-radius:999px; background:#fff; transition:.12s; }
.toc-rail .discuss-ai-link{ border:0; border-radius:6px; background:none; color:var(--muted); padding:.32rem .55rem; }
.discuss-ai-link:hover{ border-color:var(--felt); color:var(--felt); background:var(--felt-soft); }
.toc-rail .discuss-ai-link:hover{ background:var(--felt-soft); }
.discuss-ai-icon{ flex-shrink:0; }
/* inline copy is the mobile fallback; on wide screens the rail copy shows instead */
@media (min-width:1180px){ .discuss-ai-inline{ display:none; } }

/* ---- anchor-copy on headings ---- */
h2, h3{ scroll-margin-top:calc(var(--head-h) + var(--subbar-h) + 14px); }
.anchor-link{ display:inline-flex; align-items:center; justify-content:center; width:1.3rem; height:1.3rem;
  margin-left:.35rem; vertical-align:middle; opacity:0; color:var(--muted); border-radius:5px;
  text-decoration:none; position:relative; transition:opacity .12s, background .12s, color .12s; }
h2:hover .anchor-link, h3:hover .anchor-link{ opacity:1; }
.anchor-link:hover{ color:var(--felt); background:var(--felt-soft); }
.anchor-link.copied::after{ content:"Link copied"; position:absolute; left:1.6rem; top:50%;
  transform:translateY(-50%); background:var(--ink); color:#fff; padding:.1rem .5rem; border-radius:5px;
  font-family:var(--sans); font-size:.66rem; white-space:nowrap; }

/* ---- toast ---- */
.felt-toast{ position:fixed; bottom:1.4rem; left:50%; transform:translateX(-50%) translateY(1rem);
  background:var(--ink); color:#fff; font-family:var(--sans); font-size:.82rem; padding:.6rem 1rem;
  border-radius:8px; box-shadow:0 4px 14px rgba(0,0,0,.18); opacity:0; pointer-events:none;
  transition:opacity .2s, transform .2s; z-index:60; }
.felt-toast.show{ opacity:1; transform:translateX(-50%) translateY(0); }

@media (max-width:560px){
  .feedback span{ display:none; }
  .subbar-inner{ gap:.6rem; }
}
@media print{
  body{background:#fff} .site-head,.site-foot,.pager,.quiz,.subbar,.toc-rail,.discuss-ai,.felt-toast,.anchor-link{display:none}
}