/* YYUKA Studio — site styles
   Black and white only. Airy, classical, Aegean: hairline rules, generous
   space, serif headings, and interlacing bands that echo the studio mark.
   Patterns are SVG masks, so they take the ink colour in either theme.
   No web fonts and nothing loaded from another domain: the only script on the
   page is the inline theme toggle, allowed by its hash in the CSP. */

/* ------------------------------------------------------------------ tokens */

/* Three theme states: no data-theme means "follow the system", and the theme
   button sets data-theme="light" or "dark" to override it. The dark palette is
   therefore declared twice — once behind the media query for the system
   default, once behind the explicit attribute. */

:root {
  --paper: #ffffff;
  --paper-2: #fbfbfa;
  --ink: #111111;
  --ink-2: #414141;
  --ink-3: #6f6f6f;
  --rule: #d6d6d4;
  --rule-2: #ebebe9;
  color-scheme: light;

  --serif: Georgia, "Iowan Old Style", "Times New Roman", Times, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, sans-serif;

  --measure: 36rem;
  --wide: 62rem;
  --step: clamp(2rem, 1.4rem + 2.4vw, 3.5rem);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0b0b0b;
    --paper-2: #131312;
    --ink: #eeeeea;
    --ink-2: #c2c2bd;
    --ink-3: #909089;
    --rule: #333331;
    --rule-2: #212120;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --paper: #0b0b0b;
  --paper-2: #131312;
  --ink: #eeeeea;
  --ink-2: #c2c2bd;
  --ink-3: #909089;
  --rule: #333331;
  --rule-2: #212120;
  color-scheme: dark;
}

/* ------------------------------------------------------------------- reset */

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.7 var(--sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  text-decoration-color: var(--rule);
}
a:hover { text-decoration-color: currentColor; }

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

.skip { position: absolute; left: -9999px; }
.skip:focus {
  left: 1rem; top: 1rem; z-index: 10;
  background: var(--paper); color: var(--ink);
  padding: 0.6rem 1rem; border: 1px solid var(--ink);
  text-decoration: none;
}

.muted { color: var(--ink-3); }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.875em;
  padding: 0.1em 0.35em;
  border: 1px solid var(--rule-2);
  background: var(--paper-2);
}

/* ---------------------------------------------------------- pattern bands */

.band {
  height: 16px;
  background-color: var(--ink);
  opacity: 0.22;
  -webkit-mask-image: url(pattern-band.svg);
  mask-image: url(pattern-band.svg);
  -webkit-mask-repeat: repeat-x;
  mask-repeat: repeat-x;
  -webkit-mask-size: 40px 16px;
  mask-size: 40px 16px;
}

/* ------------------------------------------------------------------ header */

.site-head {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 1.75rem 1.5rem 0;
}

.head-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem 2rem;
  padding-bottom: 1.35rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
}
.brand-mark {
  width: 36px;
  height: 36px;
  display: block;
  flex: none;
}
.brand-mark img, svg.brand-mark {
  width: 100%;
  height: 100%;
  display: block;
}

/* The light theme uses the black artwork, the dark theme the white one.
   Same three states as the palette above. */
.brand-mark .mark-dark { display: none; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .brand-mark .mark-light { display: none; }
  :root:not([data-theme="light"]) .brand-mark .mark-dark { display: block; }
}

:root[data-theme="dark"] .brand-mark .mark-light { display: none; }
:root[data-theme="dark"] .brand-mark .mark-dark { display: block; }
:root[data-theme="light"] .brand-mark .mark-light { display: block; }
:root[data-theme="light"] .brand-mark .mark-dark { display: none; }

/* ------------------------------------------------------------ theme toggle */

.theme-toggle {
  appearance: none;
  -webkit-appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  margin: -6px 0;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-3);
  cursor: pointer;
  flex: none;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--rule); }
.theme-toggle svg { width: 19px; height: 19px; display: block; }

/* Show the icon for the theme the button switches *to*: a moon while the page
   is light, a sun while it is dark. */
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
}

:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: none; }

.brand-name {
  font: 400 1.1rem/1 var(--serif);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  white-space: nowrap;
}
.brand-name em {
  font-style: italic;
  text-transform: none;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  margin-left: 0.5em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1.6rem;
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.site-nav a {
  color: var(--ink-2);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
}
.site-nav a:hover { color: var(--ink); border-bottom-color: var(--rule); }
.site-nav a.current { color: var(--ink); border-bottom-color: var(--ink); }

.site-nav .lang {
  color: var(--ink-3);
  border-left: 1px solid var(--rule);
  padding-left: 1.6rem;
  margin-left: -0.7rem;
}

/* -------------------------------------------------------------------- page */

.page {
  max-width: var(--wide);
  margin: 0 auto;
  padding: var(--step) 1.5rem 4.5rem;
}

.page > h1 {
  font: 400 clamp(2rem, 1.5rem + 2vw, 2.75rem)/1.15 var(--serif);
  letter-spacing: -0.01em;
  margin: 0 0 1.75rem;
  max-width: var(--measure);
}

h2 {
  font: 400 clamp(1.3rem, 1.15rem + 0.7vw, 1.55rem)/1.3 var(--serif);
  margin: 3.25rem 0 1rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule-2);
  max-width: var(--measure);
  position: relative;
}
h2::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  width: 2.5rem; height: 2px;
  background: var(--ink);
}
.page > h2:first-of-type { border-top: none; padding-top: 0; margin-top: 2.5rem; }
.page > h2:first-of-type::before { display: none; }

h3 {
  font: 600 1.0625rem/1.4 var(--sans);
  margin: 2rem 0 0.6rem;
}

p { max-width: var(--measure); margin: 0 0 1.15rem; }

.lead {
  font: 400 clamp(1.0625rem, 1rem + 0.45vw, 1.25rem)/1.6 var(--serif);
  color: var(--ink-2);
  max-width: 40rem;
  margin-bottom: 2.25rem;
}

.bullets {
  max-width: var(--measure);
  margin: 0 0 1.5rem;
  padding-left: 1.2rem;
}
.bullets li { margin-bottom: 0.65rem; }
.bullets li::marker { color: var(--ink-3); }
.bullets strong { font-weight: 600; }

/* -------------------------------------------------------------------- hero */

.hero { margin-bottom: 3.25rem; }
.hero h1 {
  font: 400 clamp(2.4rem, 1.6rem + 3.4vw, 3.6rem)/1.05 var(--serif);
  letter-spacing: 0.01em;
  margin: 0 0 1rem;
}
.hero-sub {
  font: 400 clamp(1.0625rem, 1rem + 0.55vw, 1.35rem)/1.55 var(--serif);
  color: var(--ink-2);
  max-width: 32rem;
  margin: 0;
}

/* --------------------------------------------------------------- ornament */

.ornament {
  color: var(--ink);
  opacity: 0.3;
  margin: 3rem 0;
  max-width: var(--measure);
}
.ornament svg { display: block; width: 100%; height: auto; max-width: 20rem; }

/* -------------------------------------------------------------- game card */

.gamecard {
  position: relative;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 2rem 2.25rem;
  margin: 0 0 1.75rem;
  max-width: 50rem;
}
.gamecard::before, .gamecard::after {
  content: "";
  position: absolute;
  width: 22px; height: 22px;
  background-color: var(--ink);
  opacity: 0.5;
  -webkit-mask-image: url(pattern-key.svg);
  mask-image: url(pattern-key.svg);
  -webkit-mask-size: contain;
  mask-size: contain;
}
.gamecard::before { top: 7px; left: 7px; }
.gamecard::after {
  bottom: 7px; right: 7px;
  transform: rotate(180deg);
}

.gamecard-title {
  font: 400 1.6rem/1.2 var(--serif);
  margin: 0 0 0.6rem;
}

.gamecard-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-size: 0.8125rem;
  margin: 0 0 1.25rem;
  max-width: none;
}
.gamecard-meta .sep { color: var(--ink-3); }
.gamecard-meta .muted { letter-spacing: 0.06em; text-transform: uppercase; }

.pill {
  display: inline-block;
  padding: 0.2em 0.75em;
  border: 1px solid var(--ink);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.gamecard-summary { margin-bottom: 1.35rem; }

.gamecard-features {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  max-width: var(--measure);
}
.gamecard-features li {
  position: relative;
  padding-left: 1.35rem;
  margin-bottom: 0.6rem;
  font-size: 0.9375rem;
  line-height: 1.6;
}
.gamecard-features li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.62em;
  width: 6px; height: 6px;
  border: 1px solid var(--ink);
  transform: rotate(45deg);
}

.gamecard-announce {
  font-size: 0.9375rem;
  border-top: 1px solid var(--rule-2);
  padding-top: 1.15rem;
  margin-bottom: 0;
}

@media (max-width: 34rem) {
  .gamecard { padding: 1.5rem 1.35rem; }
}

/* ------------------------------------------------------------------ facts */

.facts {
  margin: 0 0 1.75rem;
  max-width: 42rem;
  border-top: 1px solid var(--rule);
}
.fact {
  display: grid;
  grid-template-columns: minmax(9rem, 15rem) 1fr;
  gap: 0.25rem 1.75rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--rule-2);
}
.fact dt {
  color: var(--ink-3);
  font-size: 0.8125rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding-top: 0.18em;
}
.fact dd { margin: 0; }

@media (max-width: 34rem) {
  .fact { grid-template-columns: 1fr; }
}

/* ------------------------------------------------------------------ table */

.table-wrap { overflow-x: auto; margin: 0 0 1.75rem; max-width: 46rem; }

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 30rem;
  font-size: 0.9375rem;
}
thead th {
  text-align: start;
  font: 600 0.75rem/1.4 var(--sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 0 1.25rem 0.6rem 0;
  border-bottom: 1px solid var(--ink);
}
tbody td {
  padding: 0.85rem 1.25rem 0.85rem 0;
  border-bottom: 1px solid var(--rule-2);
  vertical-align: top;
  line-height: 1.6;
}
tbody tr td:first-child { width: 12rem; }
thead th:last-child, tbody td:last-child { padding-right: 0; }

/* ------------------------------------------------------------------- note */

.note {
  max-width: var(--measure);
  margin: 0 0 1.75rem;
  padding: 1.1rem 1.35rem;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--ink);
  background: var(--paper-2);
  font-size: 0.9375rem;
  line-height: 1.65;
}

/* ------------------------------------------------------------------ button */

.cta-row { margin: 0 0 1.75rem; }

.btn {
  display: inline-block;
  padding: 0.7rem 1.6rem;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
}
.btn:hover { background: var(--ink); color: var(--paper); }

/* ---------------------------------------------------------------- contacts */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.25rem;
  max-width: 42rem;
  margin: 0 0 2rem;
}
.contact-card {
  position: relative;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 1.5rem 1.6rem;
}
.contact-card::before {
  content: "";
  position: absolute;
  top: 7px; left: 7px;
  width: 20px; height: 20px;
  background-color: var(--ink);
  opacity: 0.45;
  -webkit-mask-image: url(pattern-key.svg);
  mask-image: url(pattern-key.svg);
  -webkit-mask-size: contain;
  mask-size: contain;
}
.contact-card h3 {
  margin: 0 0 0.6rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
  padding-left: 1.9rem;
}
.contact-card .mail {
  margin: 0 0 0.6rem;
  font: 400 1.125rem/1.4 var(--serif);
}
.contact-card .mail a { word-break: break-word; }
.contact-card .muted { margin: 0; font-size: 0.9375rem; line-height: 1.6; }

/* --------------------------------------------------------------------- faq */

.faq { max-width: 44rem; margin: 0 0 2rem; border-top: 1px solid var(--rule); }
.faq-item { border-bottom: 1px solid var(--rule-2); }
.faq-item summary {
  cursor: pointer;
  padding: 1rem 2.25rem 1rem 0;
  position: relative;
  font-weight: 500;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0.25rem; top: 50%;
  transform: translateY(-50%);
  font: 400 1.25rem/1 var(--serif);
  color: var(--ink-3);
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-body { padding: 0 0 1.15rem; }
.faq-body p { margin: 0; color: var(--ink-2); }

/* ----------------------------------------------------------------- updated */

.updated {
  margin-top: 3rem;
  padding-top: 1.35rem;
  border-top: 1px solid var(--rule);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ------------------------------------------------------------------ footer */

.site-foot {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 1.5rem 3.5rem;
  font-size: 0.8125rem;
}
.site-foot .band { margin-bottom: 1.75rem; }

.foot-top {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2.5rem;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.foot-links, .foot-social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.foot-links a, .foot-social a { color: var(--ink-2); text-decoration: none; }
.foot-links a:hover, .foot-social a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.foot-legal {
  margin: 0;
  color: var(--ink-2);
  line-height: 1.9;
  max-width: none;
  letter-spacing: 0.02em;
}

/* ------------------------------------------------------------------- print */

@media print {
  .site-head, .site-foot, .skip, .band, .ornament { display: none; }
  body { background: #fff; color: #000; }
  .page { max-width: none; }
  .faq-body { display: block; }
}