/* ============================================================
   Game of Cards — landing page
   Header + chronicle hero, then plain README body.
   ============================================================ */

:root {
  --ink-0: #060912;
  --ink-1: #0b1220;
  --ink-2: #111a2c;
  --ink-3: #1a2640;
  --line: rgba(201, 207, 219, 0.14);
  --line-strong: rgba(201, 207, 219, 0.28);
  --silver-1: #e9edf3;
  --silver-2: #c9cfdb;
  --silver-3: #8f97a8;
  --silver-4: #5b6478;
  --parchment: #e8dcc1;
  --gold: #c9a875;
  --gold-bright: #e3c48a;

  --serif-display: 'Cormorant SC', 'Cinzel', Georgia, serif;
  --sans-body:     'IBM Plex Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono:          'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { background: var(--ink-0); color: var(--silver-1); }
body {
  font-family: var(--sans-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--silver-2);
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(201,168,117,0.05), transparent 60%),
    radial-gradient(ellipse 100% 80% at 50% 30%, rgba(20,40,80,0.45), transparent 70%),
    var(--ink-1);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.starfield {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
}

main, header, footer { position: relative; z-index: 1; }

/* ============================================================
   Type
   ============================================================ */

h1, h2, h3, h4 {
  font-family: var(--serif-display);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--silver-1);
  margin: 0;
}

a {
  color: var(--gold-bright);
  text-decoration: none;
  border-bottom: 1px solid rgba(201,168,117,0.25);
  transition: border-color 180ms, color 180ms;
}
a:hover { color: var(--parchment); border-bottom-color: var(--gold-bright); }

code, pre {
  font-family: var(--mono);
  font-size: 0.92em;
}
code:not(pre code) {
  color: var(--parchment);
  background: rgba(232, 220, 193, 0.06);
  padding: 0.08em 0.4em;
  border-radius: 3px;
  border: 1px solid rgba(232,220,193,0.10);
  font-size: 0.82em;
}

/* ============================================================
   Layout
   ============================================================ */

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ============================================================
   Site header
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  background: rgba(11, 18, 32, 0.72);
  border-bottom: 1px solid var(--line);
}
.site-header .inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand {
  font-family: var(--serif-display);
  font-size: 18px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--silver-1);
  border: 0;
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand:hover { color: var(--parchment); }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /* Optical correction: uppercase serif sits above line-box center, so
     nudge the geometric mark up to align with cap-height midline. */
  transform: translateY(-1px);
}
nav.site-nav { display: flex; gap: 28px; align-items: center; }
nav.site-nav a {
  font-family: var(--sans-body);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver-3);
  border: 0;
  font-weight: 500;
}
nav.site-nav a:hover { color: var(--parchment); }
nav.site-nav .gh-link {
  color: var(--silver-2);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

@media (max-width: 720px) {
  nav.site-nav a:not(.gh-link) { display: none; }
}

/* ============================================================
   Hero — masthead only, no CTA
   ============================================================ */

.hero {
  padding: 110px 0 90px;
  text-align: center;
  position: relative;
}
.hero .container {
  max-width: 1400px;
  padding: 0 24px;
}
.wordmark {
  font-family: var(--serif-display);
  font-weight: 500;
  font-size: min(8.5vw, 132px);
  letter-spacing: 0.04em;
  line-height: 0.95;
  margin: 0;
  white-space: nowrap;
  padding: 0 0.1em;
  background: linear-gradient(
    180deg,
    #f6f7fa 0%,
    #c9cfdb 35%,
    #6e7689 60%,
    #b3b9c6 78%,
    #e6e9f0 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow:
    0 1px 0 rgba(255,255,255,0.04),
    0 2px 8px rgba(0,0,0,0.55);
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.5));
}
.wordmark .of {
  font-size: 0.6em;
  letter-spacing: 0.18em;
  vertical-align: 0.18em;
  font-weight: 400;
}
.wordmark-rule {
  display: block;
  width: min(560px, 70%);
  margin: 26px auto 18px;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    var(--silver-4) 20%,
    var(--silver-2) 50%,
    var(--silver-4) 80%,
    transparent);
}
.tagline {
  font-family: var(--sans-body);
  font-size: clamp(15px, 1.6vw, 18px);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--silver-3);
  margin: 0;
  font-weight: 400;
}

/* ============================================================
   README body — straightforward documentation styling
   ============================================================ */

.body-container {
  padding-bottom: 80px;
}

.readme {
  max-width: clamp(720px, 70vw, 940px);
  margin: 0 auto;
}

/* Bridge: from mythic masthead to practical body */
.readme .lede {
  font-size: 20px;
  line-height: 1.5;
  color: var(--silver-1);
  margin: 0 0 48px;
  text-align: center;
  padding: 0 0 36px;
  font-weight: 400;
  position: relative;
}
.readme .lede::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 1px;
  background: var(--gold);
  opacity: 0.5;
}

.readme h2 {
  font-family: var(--sans-body);
  font-size: 13px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 64px 0 18px;
  font-weight: 600;
}
.readme h2:first-of-type {
  margin-top: 48px;
}

.readme p {
  margin: 0 0 1.2em;
  color: var(--silver-2);
}
.readme p strong {
  color: var(--silver-1);
  font-weight: 600;
}
.readme em {
  color: var(--parchment);
  font-style: normal;
  font-weight: 500;
}

.readme .code-block {
  background: #050810;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 16px 20px;
  margin: 20px 0;
  overflow-x: auto;
  color: var(--parchment);
  font-size: 15px;
  line-height: 1.6;
}
.readme .code-block code {
  background: none;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

.readme-figure {
  max-width: 100%;
  margin: 32px auto 36px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 12px 30px -10px rgba(0,0,0,0.45);
}
.readme-figure img {
  display: block;
  width: 100%;
  height: auto;
}
.readme-figure.narrow-figure {
  max-width: 560px;
  margin: 28px auto;
  border: 1px solid var(--line);
}

.prompt-intro {
  margin-top: 28px;
  color: var(--silver-2);
}
.prompt-examples {
  margin: 16px 0 8px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 14px;
}
.prompt-examples dt {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--silver-1);
}
.prompt-examples .prompt {
  font-family: var(--sans-body);
  font-style: italic;
  color: var(--parchment);
  background: rgba(232, 220, 193, 0.05);
  border-left: 2px solid var(--gold);
  padding: 2px 10px 2px 8px;
  border-radius: 0 3px 3px 0;
}
.prompt-examples .prompt::before {
  content: '“';
  color: var(--gold);
  font-style: normal;
  margin-right: 2px;
}
.prompt-examples .prompt::after {
  content: '”';
  color: var(--gold);
  font-style: normal;
  margin-left: 2px;
}
.prompt-examples .prompt-or {
  color: var(--silver-3);
  font-size: 13px;
  margin: 0 4px;
}
.prompt-examples dd {
  margin: 4px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  color: var(--silver-3);
  font-size: 14px;
  line-height: 1.6;
}
.prompt-examples dd em {
  color: var(--gold);
  font-style: normal;
  font-weight: 500;
}

/* ============================================================
   Personas — "Who is this for?"
   ============================================================ */

.who-intro {
  margin: 0 0 28px;
  color: var(--silver-3);
  font-size: 15px;
}

.persona-grid {
  list-style: none;
  padding: 0;
  margin: 0 0 36px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.persona {
  position: relative;
  padding: 22px 22px 20px;
  background: rgba(232, 220, 193, 0.025);
  border: 1px solid var(--line);
  border-left: 2px solid rgba(201, 168, 117, 0.35);
  border-radius: 0 4px 4px 0;
  display: flex;
  flex-direction: column;
}

.persona-primary {
  background: rgba(232, 220, 193, 0.05);
  border-color: rgba(201, 168, 117, 0.28);
  border-left-color: var(--gold);
  box-shadow: 0 12px 30px -16px rgba(0, 0, 0, 0.55);
}

.persona h3 {
  font-family: var(--serif-display);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--silver-1);
  margin: 0 0 14px;
  white-space: nowrap;
}

.persona-who {
  font-size: 14px;
  line-height: 1.55;
  color: var(--parchment);
  margin: 0 0 12px;
  font-weight: 500;
}

.persona-fit {
  font-size: 14px;
  line-height: 1.6;
  color: var(--silver-2);
  margin: 0 0 14px;
  flex: 1;
}

.persona-tradeoff {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--silver-3);
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-style: italic;
}

.persona code,
.anti-persona code {
  font-size: 0.85em;
}

.anti-persona {
  margin: 0 0 12px;
  padding: 18px 22px 16px;
  background: rgba(11, 18, 32, 0.5);
  border: 1px dashed var(--line-strong);
  border-radius: 4px;
}

.anti-persona h3 {
  font-family: var(--sans-body);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--silver-3);
  font-weight: 600;
  margin: 0 0 10px;
}

.anti-persona p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--silver-3);
  margin: 0;
}

@media (max-width: 860px) {
  .persona-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .persona-primary {
    box-shadow: 0 8px 24px -14px rgba(0, 0, 0, 0.55);
  }
}

.more-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.more-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--silver-2);
  font-size: 16px;
}
.more-list li:last-child { border-bottom: 0; }

/* ============================================================
   Footer
   ============================================================ */

footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 50px 0 70px;
  text-align: center;
  color: var(--silver-4);
  font-size: 13px;
  font-family: var(--sans-body);
}
footer.site-footer .seal {
  font-family: var(--serif-display);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-size: 11px;
  color: var(--silver-3);
  margin-bottom: 14px;
}