/* gembet.fm: "Card-room rate card". Felt-green base, cream reference surfaces,
   gold only for outbound actions, playing cards drawn as type. No JavaScript. */

@font-face {
  font-family: "Plex Condensed";
  src: url("../assets/fonts/ibm-plex-sans-condensed-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: "Plex Sans";
  src: url("../assets/fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Plex Sans";
  src: url("../assets/fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("../assets/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

:root {
  /* Palette */
  --felt-950: #0a2019;
  --felt-900: #0f2c22;
  --felt-800: #14382b;
  --felt-600: #2b5a47;
  --cream-50: #f4efe1;
  --cream-200: #e4dcc6;
  --ink-900: #13211a;
  --ink-600: #4a584f;
  --sage-200: #c3d3c8;
  --gold-400: #f0c04a;
  --gold-300: #f7d57e;
  --red-700: #a8231a;

  /* Semantic */
  --color-surface-base: var(--felt-950);
  --color-surface-band: var(--felt-900);
  --color-surface-raised: var(--felt-800);
  --color-surface-paper: var(--cream-50);
  --color-text: var(--cream-50);
  --color-text-muted: var(--sage-200);
  --color-text-on-paper: var(--ink-900);
  --color-text-on-paper-muted: var(--ink-600);
  --color-rule: var(--felt-600);
  --color-rule-paper: var(--cream-200);
  --color-row-active: #e9e0c8;
  --color-action-primary: var(--gold-400);
  --color-action-primary-hover: var(--gold-300);
  --color-action-text: var(--ink-900);
  --color-suit-red: var(--red-700);
  --color-suit-black: var(--ink-900);
  --color-focus: #ffd75e;
  --color-focus-on-paper: var(--felt-950);

  /* Type */
  --font-display: "Plex Condensed", "Arial Narrow", sans-serif;
  --font-body: "Plex Sans", "Segoe UI", sans-serif;
  --font-mono: "Plex Mono", "Consolas", monospace;
  --text-sm: 0.9375rem;
  --text-base: 1.0625rem;
  --text-lg: 1.25rem;
  --text-h3: 1.25rem;
  --text-h2: clamp(1.625rem, 1.3rem + 1.4vw, 2.25rem);
  --text-h1: clamp(2.25rem, 1.6rem + 3vw, 3.75rem);

  /* Space */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;
  --gutter: 1rem;
  --max: 72rem;
  --radius: 4px;
  --card-radius: 6px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-surface-base);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  margin: 0 0 var(--space-4);
}

h1 {
  font-size: var(--text-h1);
  letter-spacing: -0.01em;
  max-width: 18ch;
}

h2 {
  font-size: var(--text-h2);
}

h3 {
  font-size: var(--text-h3);
  margin-bottom: var(--space-2);
}

p,
ul,
ol,
dl {
  margin: 0 0 var(--space-4);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

b,
strong {
  font-weight: 600;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.mono {
  font-family: var(--font-mono);
  font-weight: 500;
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: var(--space-4);
  top: -4rem;
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface-paper);
  color: var(--color-text-on-paper);
  z-index: 10;
}

.skip:focus {
  top: var(--space-2);
}

/* Header and page tabs */

.top {
  background: var(--color-surface-base);
  border-bottom: 1px solid var(--color-rule);
}

.top__row,
.tabs__list,
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.top__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.brand {
  display: inline-flex;
  flex-shrink: 0;
}

.brand img {
  width: 128px;
}

.tabs {
  background: var(--color-surface-band);
  border-bottom: 1px solid var(--color-rule);
}

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-5);
  list-style: none;
  margin-bottom: 0;
}

.tabs__list a {
  display: block;
  padding: var(--space-3) 0;
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  border-bottom: 3px solid transparent;
}

.tabs__list a:hover {
  color: var(--color-text);
}

.tabs__list a[aria-current="page"] {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

/* Buttons: gold is reserved for links out to GemBet */

.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius);
  font-weight: 600;
  line-height: 1.3;
  text-decoration: none;
  text-align: center;
}

.btn--gold {
  background: var(--color-action-primary);
  color: var(--color-action-text);
}

.btn--gold:hover {
  background: var(--color-action-primary-hover);
}

.btn--small {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.more {
  font-weight: 600;
}

/* Bands */

.band {
  padding: var(--space-7) 0;
}

.band--alt {
  background: var(--color-surface-band);
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
}

.band--paper {
  background: var(--color-surface-paper);
  color: var(--color-text-on-paper);
}

.band--paper :focus-visible,
.paper :focus-visible {
  outline-color: var(--color-focus-on-paper);
}

.band--tight {
  padding: var(--space-6) 0;
}

.label {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.band--paper .label,
.paper .label {
  color: var(--color-text-on-paper-muted);
}

.lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 40rem;
}

.measure {
  max-width: 42rem;
}

.muted {
  color: var(--color-text-muted);
}

.band--paper .muted {
  color: var(--color-text-on-paper-muted);
}

.small {
  font-size: var(--text-sm);
}

/* Hero */

.hero {
  display: grid;
  gap: var(--space-6);
  align-items: center;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4) var(--space-5);
  margin-top: var(--space-5);
}

/* Playing cards, drawn as type */

.hand {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
}

.card {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 2.1em;
  height: 2.9em;
  background: var(--color-surface-paper);
  color: var(--color-suit-black);
  border: 1px solid var(--color-rule-paper);
  border-radius: var(--card-radius);
  font-family: var(--font-mono);
  font-weight: 500;
  line-height: 1;
  font-size: 1rem;
}

.card__suit {
  font-family: "Segoe UI Symbol", "Apple Symbols", "DejaVu Sans", sans-serif;
  font-size: 1.05em;
  margin-top: 0.15em;
}

.card--red {
  color: var(--color-suit-red);
}

.card--blank {
  background: var(--felt-600);
  border-color: var(--felt-600);
}

.band--paper .card,
.paper .card {
  border-color: var(--ink-600);
}

.hand--hero {
  gap: var(--space-2);
  flex-wrap: nowrap;
  font-size: 1.75rem;
}

.hand--hero .card {
  font-size: 1em;
  width: 2.3em;
  height: 3.3em;
  border-width: 2px;
  box-shadow: 0 3px 0 var(--felt-600);
}

.hand--hero .card + .card {
  margin-left: calc(-0.5em - var(--space-2));
}

.hand--hero .card__suit {
  font-size: 1.3em;
  margin-top: 0.25em;
}

.hero__visual {
  margin: 0;
}

.hero__visual figcaption {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Reference grid: main column plus fact rail */

.ref-grid {
  display: grid;
  gap: var(--space-6);
}

.rail {
  align-self: start;
}

.facts {
  margin: 0;
  border-top: 1px solid var(--color-rule);
}

.facts div {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-rule);
}

.facts dt {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.facts dd {
  margin: 0;
}

.rail .btn {
  margin-top: var(--space-5);
}

/* Paper panel inside a felt band */

.paper {
  background: var(--color-surface-paper);
  color: var(--color-text-on-paper);
  border-radius: var(--radius);
  padding: var(--space-5);
}

/* Reference tables */

.table-wrap {
  overflow-x: auto;
  margin-bottom: var(--space-4);
}

.rate {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.rate caption {
  text-align: left;
  font-family: var(--font-display);
  font-size: var(--text-h3);
  padding-bottom: var(--space-3);
}

.rate th,
.rate td {
  text-align: left;
  vertical-align: top;
  padding: var(--space-3) var(--space-3) var(--space-3) 0;
  border-bottom: 1px solid var(--color-rule-paper);
}

.rate thead th {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-on-paper-muted);
  border-bottom: 2px solid var(--color-text-on-paper);
}

.rate tbody th {
  font-weight: 600;
}

.rate tbody tr {
  transition: background-color 120ms ease-out;
}

.rate tbody tr:hover,
.rate tbody tr:focus-within {
  background: var(--color-row-active);
}

.rate .num {
  font-family: var(--font-mono);
  font-weight: 500;
  white-space: nowrap;
}

.rate .hand {
  flex-wrap: nowrap;
}

/* Ranking table stacks on phones: rank and name, then cards, then description */
.rate--ranks thead {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.rate--ranks tbody tr {
  display: grid;
  grid-template-columns: 2rem 1fr;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-rule-paper);
}

.rate--ranks tbody td,
.rate--ranks tbody th {
  border-bottom: 0;
  padding: var(--space-1) 0;
}

.rate--ranks tbody td:nth-child(n+3) {
  grid-column: 2;
}

.rate--compare th[scope="row"] {
  width: 26%;
}

.rate--compare td {
  width: 37%;
}

/* Game families */

.family {
  padding: var(--space-5) 0;
  border-top: 1px solid var(--color-rule);
}

.family:last-child {
  border-bottom: 1px solid var(--color-rule);
}

.family h3 {
  margin-bottom: var(--space-2);
}

.titles {
  list-style: none;
  padding: 0;
  margin: var(--space-3) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.titles li {
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  font-size: var(--text-sm);
}

.titles .by {
  color: var(--color-text-muted);
}

/* Steps: these are real sequences */

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding: 0 0 var(--space-4) 2.75rem;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.9rem;
  height: 1.9rem;
  display: grid;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--text-sm);
}

/* Terms */

.terms {
  display: grid;
  gap: var(--space-4) var(--space-6);
  margin: 0;
}

.terms dt {
  font-weight: 600;
}

.terms dd {
  margin: 0;
  color: var(--color-text-muted);
}

.band--paper .terms dd {
  color: var(--color-text-on-paper-muted);
}

/* Offer block */

.offer {
  display: grid;
  gap: var(--space-5);
}

.offer__figure {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.5rem + 2vw, 2.75rem);
  line-height: 1.05;
  margin-bottom: var(--space-3);
}

.offer ul {
  padding-left: 1.2rem;
}

.offer li {
  margin-bottom: var(--space-2);
}

/* Split */

.split {
  display: grid;
  gap: var(--space-5) var(--space-7);
}

.checks {
  padding-left: 1.2rem;
}

.checks li {
  margin-bottom: var(--space-3);
}

/* FAQ */

.faq details {
  border-top: 1px solid var(--color-rule-paper);
  padding: var(--space-3) 0;
}

.faq details:last-child {
  border-bottom: 1px solid var(--color-rule-paper);
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: var(--space-1) 0;
}

.faq details p {
  margin: var(--space-2) 0 var(--space-2);
  color: var(--color-text-on-paper-muted);
}

/* Footer */

.footer {
  border-top: 1px solid var(--color-rule);
  padding: var(--space-7) 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer__grid {
  display: grid;
  gap: var(--space-5);
}

.footer__age {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  color: var(--color-text);
  line-height: 1;
  margin-bottom: var(--space-3);
}

.footer__nav ul {
  list-style: none;
  padding: 0;
}

.footer__nav li {
  margin-bottom: var(--space-2);
}

/* Larger screens */

@media (min-width: 40em) {
  :root {
    --gutter: 1.5rem;
  }

  .brand img {
    width: 150px;
  }

  .terms {
    grid-template-columns: max-content 1fr;
  }

  .rate--ranks thead {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
  }

  .rate--ranks tbody tr {
    display: table-row;
    padding: 0;
  }

  .rate--ranks tbody td,
  .rate--ranks tbody th {
    padding: var(--space-3) var(--space-3) var(--space-3) 0;
    border-bottom: 1px solid var(--color-rule-paper);
  }

  .offer {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .split {
    grid-template-columns: 1fr 1fr;
  }

  .paper {
    padding: var(--space-6);
  }
}

@media (min-width: 60em) {
  .band {
    padding: var(--space-8) 0;
  }

  .band--tight {
    padding: var(--space-6) 0;
  }

  .hero {
    grid-template-columns: 7fr 5fr;
    gap: var(--space-7);
  }

  .hand--hero {
    font-size: clamp(1.75rem, 1rem + 2vw, 2.75rem);
    justify-content: flex-end;
  }

  .hero__visual figcaption {
    text-align: right;
  }

  .ref-grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: var(--space-7);
  }

  .rail {
    position: sticky;
    top: var(--space-5);
  }

  .footer__grid {
    grid-template-columns: 1fr 3fr;
    gap: var(--space-7);
  }
}

@media (prefers-reduced-motion: reduce) {
  .rate tbody tr {
    transition: none;
  }
}