/* ==========================================================================
   Blackjack Salon — guide pages (how to play, strategy, rule variations, 404)
   Builds on common.css so cards, chips and controls match the table.
   ========================================================================== */

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 18px/1.65 var(--ui);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brass-hi); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: #f1dcae; }

/* ---------------------------------------------------------------- Header */

.site-head {
  position: sticky; top: 0;
  z-index: 50;
  display: flex; align-items: center; gap: 32px;
  height: 64px;
  padding: 0 max(24px, env(safe-area-inset-left, 0px));
  background: rgba(18, 16, 13, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(1.2) blur(8px);
}
.site-head .brand { display: flex; align-items: baseline; gap: 9px; color: var(--ink); text-decoration: none; white-space: nowrap; }
.site-head .brand-mark { color: var(--brass); font-size: 18px; }
.site-head .brand-name { font: 600 19px/1 var(--display); letter-spacing: .1em; }
.site-head .brand-name em { font-style: normal; color: var(--brass); }
.site-nav { display: flex; gap: 26px; margin-right: auto; }
.site-nav a {
  font: 600 15px/1 var(--cond);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--brass); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; margin-right: -8px; }
.nav-toggle svg { width: 26px; height: 26px; fill: none; stroke: var(--ink); stroke-width: 1.7; stroke-linecap: round; }

/* ---------------------------------------------------------------- Hero */

.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(90% 140% at 50% 0%, var(--felt-hi) 0%, var(--felt) 50%, var(--felt-lo) 100%);
  border-bottom: 6px solid #2f1b10;
  box-shadow: inset 0 -1.5px 0 rgba(201, 164, 92, .55);
}
.hero::after {
  content: '';
  position: absolute; inset: 0;
  opacity: .18;
  mix-blend-mode: overlay;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.hero-inner {
  position: relative; z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 24px 52px;
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
}
.eyebrow {
  margin: 0 0 10px;
  font: 600 14px/1 var(--cond);
  letter-spacing: .26em;
  text-transform: uppercase;
  color: rgba(244, 228, 186, .7);
}
.hero h1 {
  margin: 0;
  font: 600 clamp(32px, 5vw, 50px)/1.1 var(--display);
  letter-spacing: .03em;
  color: #fbf3df;
  text-shadow: 0 2px 10px rgba(0, 0, 0, .25);
}
.lede { margin: 16px 0 0; max-width: 560px; font-size: 19px; color: rgba(251, 243, 223, .86); }
.hero-cards { display: flex; gap: 18px; flex: none; }
.hero-cards .hand { --base: 92px; }

/* ---------------------------------------------------------------- Layout */

.page { max-width: 1080px; margin: 0 auto; padding: 40px 24px 80px; }
.page-grid { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 56px; align-items: start; }
.toc { position: sticky; top: 88px; font-size: 15px; }
.toc b { display: block; font: 600 13px/1 var(--cond); letter-spacing: .2em; text-transform: uppercase; color: var(--dim); margin-bottom: 12px; }
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line-2); }
.toc li a { display: block; padding: 5px 0 5px 14px; color: var(--muted); text-decoration: none; line-height: 1.35; }
.toc li a:hover { color: var(--ink); }

.prose { max-width: 720px; }
.prose h2 {
  margin: 56px 0 14px;
  font: 600 28px/1.2 var(--display);
  letter-spacing: .03em;
  color: #f6eedd;
}
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 30px 0 8px; font: 600 21px/1.25 var(--cond); letter-spacing: .03em; color: #f1e7d4; }
.prose p, .prose ul, .prose ol { margin: 0 0 16px; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin-bottom: 6px; }
.prose strong { color: #fbf3e2; font-weight: 600; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }

.note {
  margin: 22px 0;
  padding: 14px 18px;
  border-left: 3px solid var(--brass);
  background: var(--bg-2);
  font-size: 16.5px;
  color: #ddd4c4;
}
.note p:last-child { margin-bottom: 0; }

.cta {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  margin: 40px 0;
  padding: 22px 24px;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  background: var(--bg-2);
}
.cta p { margin: 0; font-size: 17px; color: var(--muted); }
.cta p b { display: block; color: var(--ink); font: 600 20px/1.3 var(--cond); letter-spacing: .02em; margin-bottom: 2px; }
.btn.lg { height: 50px; padding: 0 24px; font-size: 17px; }

/* tables */
.data {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 24px;
  font-size: 16px;
}
.data th, .data td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data th { font: 600 13px/1.2 var(--cond); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); border-bottom-color: var(--line-2); }
.data td.num, .data th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* example hands */
.example {
  display: flex; flex-wrap: wrap; gap: 26px 34px;
  margin: 18px 0 26px;
  padding: 22px 22px 18px;
  border-radius: 8px;
  background: radial-gradient(120% 140% at 50% 0%, var(--felt-hi), var(--felt) 60%, var(--felt-lo));
  box-shadow: inset 0 0 0 1px rgba(201, 164, 92, .35);
}
.example figure { margin: 0; display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.example figcaption { font: 600 15px/1.3 var(--cond); letter-spacing: .03em; color: rgba(251, 243, 223, .9); }
.example figcaption span { display: block; font: 400 14px/1.35 var(--ui); color: rgba(251, 243, 223, .66); letter-spacing: 0; }
.example .hand { --base: 64px; }
.example .card, .hero-cards .card { transition: none; }

.keys { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px 24px; margin: 12px 0 20px; }
.keys div { display: flex; align-items: center; gap: 10px; font-size: 16px; color: #ddd4c4; }

.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 32px 14px 0;
  position: relative;
  font: 600 19px/1.3 var(--cond);
  letter-spacing: .02em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 4px; top: 10px; font: 400 26px/1 var(--ui); color: var(--brass); }
.faq details[open] summary::after { content: '−'; }
.faq details p { margin: 0 0 16px; color: #ddd4c4; }

/* ---------------------------------------------------------------- Strategy charts */

.controls {
  display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: flex-end;
  margin: 0 0 28px;
  padding: 18px 20px;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  background: var(--bg-2);
}
.control label { display: block; margin-bottom: 7px; font: 600 12.5px/1 var(--cond); letter-spacing: .18em; text-transform: uppercase; color: var(--dim); }
.controls .edge-out { margin-left: auto; text-align: right; }
.controls .edge-out strong { display: block; font: 600 28px/1 var(--cond); color: var(--brass-hi); font-variant-numeric: tabular-nums; }
.controls .edge-out strong.player { color: var(--win); }
.controls .edge-out small { font-size: 13px; color: var(--dim); }

.charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 30px 40px; }
.chart h3 { margin: 0 0 10px; font: 600 20px/1 var(--display); letter-spacing: .05em; }
.chart table { border-collapse: separate; border-spacing: 2px; width: 100%; table-layout: fixed; }
.chart th {
  font: 600 14px/1 var(--cond);
  color: var(--muted);
  padding: 7px 0;
  text-align: center;
}
.chart thead th { color: var(--dim); }
.chart thead th.up-label { text-align: left; font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; }
.chart tbody th { text-align: left; padding-left: 6px; width: 62px; white-space: nowrap; }
.chart td {
  height: 32px;
  text-align: center;
  font: 700 14px/1 var(--cond);
  letter-spacing: .02em;
  border-radius: 2px;
  cursor: pointer;
  transition: filter .12s, box-shadow .12s;
}
.chart td:hover, .chart td.sel { box-shadow: inset 0 0 0 2px #fff6dc; }
.chart.dim-row td:not(.hl), .chart.dim-row tbody th:not(.hl) { filter: brightness(.68); }
.code-H  { background: #d9d2c3; color: #2b261e; }
.code-S  { background: #a3392f; color: #fff; }
.code-D  { background: #2c7d4f; color: #fff; }
.code-Ds { background: #2c7d4f; color: #fff; background-image: repeating-linear-gradient(135deg, transparent 0 6px, rgba(255, 255, 255, .14) 6px 8px); }
.code-P  { background: #335c9c; color: #fff; }
.code-Rh, .code-Rs, .code-Rp { background: #5c564d; color: #fff; }
.legend { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 4px 0 26px; font-size: 15px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.legend i { display: inline-grid; place-items: center; min-width: 30px; height: 24px; padding: 0 4px; border-radius: 2px; font: 700 13px/1 var(--cond); font-style: normal; }
.cell-info {
  min-height: 56px;
  margin: 0 0 28px;
  padding: 14px 18px;
  border-left: 3px solid var(--brass);
  background: var(--bg-2);
  font-size: 16.5px;
  color: #ddd4c4;
}
.cell-info b { color: var(--ink); }

/* trainer */
.trainer {
  display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px;
  margin: 10px 0 30px;
  padding: 26px;
  border-radius: 10px;
  background: radial-gradient(120% 140% at 50% 0%, var(--felt-hi), var(--felt) 60%, var(--felt-lo));
  box-shadow: inset 0 0 0 1px rgba(201, 164, 92, .4);
}
.trainer .table-area { display: flex; flex-direction: column; gap: 22px; }
.trainer .row { display: flex; align-items: center; gap: 18px; }
.trainer .row > span { width: 74px; font: 600 13px/1.2 var(--cond); letter-spacing: .18em; text-transform: uppercase; color: rgba(251, 243, 223, .7); }
.trainer .hand { --base: 76px; }
.trainer .moves { display: flex; flex-wrap: wrap; gap: 8px; }
.trainer .moves .btn { min-width: 92px; height: 46px; }
.trainer .side { display: flex; flex-direction: column; gap: 14px; color: rgba(251, 243, 223, .9); }
.trainer .score { display: flex; gap: 22px; }
.trainer .score div { font: 600 13px/1 var(--cond); letter-spacing: .16em; text-transform: uppercase; color: rgba(251, 243, 223, .6); }
.trainer .score b { display: block; margin-top: 6px; font: 600 28px/1 var(--cond); letter-spacing: 0; color: #fbf3df; font-variant-numeric: tabular-nums; }
.trainer .feedback {
  min-height: 92px;
  padding: 12px 14px;
  border-radius: 6px;
  background: rgba(0, 0, 0, .26);
  font-size: 16px;
  line-height: 1.5;
}
.trainer .feedback.right b { color: #9be0b0; }
.trainer .feedback.wrong b { color: #ffab9f; }

/* house-edge calculator */
.calc { margin: 10px 0 34px; padding: 22px 24px; border: 1px solid var(--line-2); border-radius: 8px; background: var(--bg-2); }
.calc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px 30px; }
.calc .control .seg { display: inline-flex; flex-wrap: wrap; }
.calc .control .switch { display: block; }
.calc-out {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px;
  margin-top: 22px; padding-top: 18px;
  border-top: 1px solid var(--line);
}
.calc-out .big { font: 600 40px/1 var(--cond); color: var(--brass-hi); font-variant-numeric: tabular-nums; }
.calc-out .big.player { color: var(--win); }
.calc-out small { display: block; margin-top: 5px; font-size: 14px; color: var(--dim); }
.delta { font: 600 16px/1 var(--cond); letter-spacing: .02em; white-space: nowrap; }
.delta.up { color: var(--loss); }
.delta.down { color: var(--win); }
.rule-impact { display: flex; gap: 10px; align-items: baseline; margin: -4px 0 14px; font-size: 15px; color: var(--dim); }
.rule-impact + .rule-impact { margin-top: -10px; }

/* ---------------------------------------------------------------- Footer */

.site-foot {
  border-top: 1px solid var(--line);
  background: #0e0c0a;
  padding: 36px 24px calc(36px + env(safe-area-inset-bottom, 0px));
  font-size: 15px;
  color: var(--dim);
}
.site-foot .inner { max-width: 1080px; margin: 0 auto; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px 40px; }
.site-foot nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.site-foot a { color: var(--muted); text-decoration: none; }
.site-foot a:hover { color: var(--ink); }
.site-foot p { margin: 0; max-width: 520px; line-height: 1.5; }

/* ---------------------------------------------------------------- 404 */

.lost { min-height: calc(100dvh - 64px); display: grid; place-items: center; text-align: center; padding: 40px 24px; }
.lost .hero-cards { justify-content: center; margin-bottom: 28px; }
.lost h1 { margin: 0 0 12px; font: 600 clamp(30px, 6vw, 46px)/1.15 var(--display); letter-spacing: .03em; }
.lost p { margin: 0 auto 26px; max-width: 460px; color: var(--muted); }
.lost .links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* ---------------------------------------------------------------- Responsive */

@media (max-width: 900px) {
  .page-grid { grid-template-columns: 1fr; gap: 0; }
  .toc { display: none; }
  .hero-cards { display: none; }
  .trainer { grid-template-columns: 1fr; }
  .charts { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 17px; }
  .site-head { gap: 12px; height: 58px; padding: 0 16px; }
  .site-head .brand-name { font-size: 16px; letter-spacing: .06em; }
  .site-head .brand-mark { font-size: 15px; }
  .site-head .btn { margin-left: auto; height: 38px; padding: 0 14px; font-size: 14px; }
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute; left: 0; right: 0; top: 58px;
    flex-direction: column; gap: 0;
    padding: 6px 16px 12px;
    background: #15120f;
    border-bottom: 1px solid var(--line-2);
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 17px; }
  .site-nav a[aria-current="page"] { border-bottom-color: var(--line); color: var(--brass-hi); }
  .hero-inner { padding: 36px 18px 34px; }
  .lede { font-size: 17px; }
  .page { padding: 28px 18px 60px; }
  .prose h2 { font-size: 24px; margin-top: 44px; }
  .cta { flex-direction: column; align-items: flex-start; }
  .controls .edge-out { margin-left: 0; text-align: left; }
  .chart td { height: 30px; font-size: 13px; }
  .chart tbody th { width: 50px; font-size: 13px; padding-left: 2px; }
  .chart th { font-size: 13px; }
  .trainer { padding: 18px; }
  .trainer .hand { --base: 64px; }
  .trainer .row > span { width: 58px; }
  .trainer .moves .btn { flex: 1 1 30%; min-width: 0; }
  .example .hand { --base: 56px; }
  .data { font-size: 15px; }
  .data th, .data td { padding: 9px 8px; }
}
.data .rule-impact { display: inline; margin: 0; }