/* Donka Puzzle Co. — shared styles for content pages
   Tokens mirror index.html exactly. */

:root{
  --paper: #ECE7D8;
  --paper-edge: #E1DAC5;
  --rule: #CFC6AC;
  --grid-thin: #AAB4C6;
  --grid-thick: #263449;
  --ink: #263449;
  --ink-soft: #5C6B85;
  --ink-faint: #8993A8;
  --pencil-red: #A23E2C;
  --pencil-red-soft: #C97A67;
  --pencil-green: #3C6E4F;
  --highlight: rgba(245, 213, 101, 0.55);
  --highlight-strong: rgba(245, 213, 101, 0.9);
  --card-shadow: 0 30px 60px -25px rgba(38, 52, 73, 0.35), 0 8px 20px -10px rgba(38,52,73,0.2);
}

*{ box-sizing: border-box; }

html, body{
  margin:0; padding:0; min-height:100%;
  background: #D8D2BF;
  background-image:
    radial-gradient(circle at 15% 20%, rgba(255,255,255,0.25), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(0,0,0,0.05), transparent 45%);
  font-family: 'Inter', sans-serif;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

body{ display:flex; justify-content:center; padding: 32px 16px 60px; }

.page{
  position:relative;
  width:100%; max-width: 880px;
  background: var(--paper);
  background-image: repeating-linear-gradient( to bottom, transparent 0 27px, rgba(38,52,73,0.045) 27px 28px );
  border-radius: 10px;
  box-shadow: var(--card-shadow);
  padding: 44px clamp(18px, 4vw, 52px) 40px;
  overflow: hidden;
}

.page::before{
  content:"";
  position:absolute; left:0; right:0; bottom:-1px; height: 14px;
  background:
    linear-gradient(135deg, var(--paper) 50%, transparent 50%) 0 0/14px 14px repeat-x,
    linear-gradient(-135deg, var(--paper) 50%, transparent 50%) 0 0/14px 14px repeat-x;
  background-color: transparent;
}

.spiral{ display:flex; justify-content:center; gap: clamp(10px, 2.6vw, 20px); margin: -44px -12px 26px; padding-top: 14px; }
.spiral span{
  width: 12px; height: 12px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #f4f0e2, #beb69c 60%, #948c72 100%);
  box-shadow: inset 0 0 0 1px rgba(38,52,73,0.25), 0 2px 3px rgba(0,0,0,0.15);
}

/* ---------- Masthead ---------- */

.masthead{ position:relative; text-align:center; margin-bottom: 22px; }
.eyebrow{
  margin:0 0 6px; font-family:'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-soft);
}
.eyebrow a{ color: inherit; text-decoration: none; }
.eyebrow a:hover{ color: var(--pencil-red); }
.title{
  margin: 0; font-family: 'Fraunces', serif; font-weight: 600; font-style: italic;
  font-size: clamp(30px, 5vw, 46px); letter-spacing: -0.01em; color: var(--ink); line-height: 1.12;
}
.title::after{
  content:""; display:block; width: 92px; height: 3px; margin: 12px auto 0;
  background: var(--pencil-red); border-radius: 2px; opacity: 0.75;
}

/* ---------- Site navigation ---------- */

.sitenav{
  display:flex; flex-wrap:wrap; justify-content:center; gap: 4px 22px;
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  padding: 11px 4px; margin-bottom: 30px;
}
.sitenav a{
  font-family:'JetBrains Mono', monospace; font-size: 11.5px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-soft); text-decoration: none;
  padding: 2px 0; border-bottom: 1.5px solid transparent;
}
.sitenav a:hover{ color: var(--pencil-red); border-bottom-color: var(--pencil-red); }
.sitenav a[aria-current="page"]{ color: var(--ink); border-bottom-color: var(--ink); }

/* ---------- Article body ---------- */

.article{ max-width: 68ch; margin: 0 auto; }

.standfirst{
  font-family: 'Fraunces', serif; font-size: clamp(16px, 2.2vw, 18.5px); font-style: italic;
  line-height: 1.6; color: var(--ink-soft); margin: 0 0 28px;
  padding-bottom: 22px; border-bottom: 1px solid var(--rule);
}

.article h2{
  font-family: 'Fraunces', serif; font-style: italic; font-weight: 600;
  font-size: clamp(20px, 3vw, 24px); color: var(--ink); margin: 38px 0 12px; line-height: 1.25;
}
.article h3{
  font-family: 'Inter', sans-serif; font-weight: 700; font-size: 15px;
  color: var(--ink); margin: 26px 0 6px;
}
.article p{
  font-family: 'Inter', sans-serif; font-size: 14.5px; line-height: 1.72;
  color: var(--ink-soft); margin: 0 0 14px;
}
.article li{
  font-family: 'Inter', sans-serif; font-size: 14.5px; line-height: 1.72;
  color: var(--ink-soft); margin-bottom: 8px;
}
.article ul, .article ol{ padding-left: 22px; margin: 0 0 16px; }
.article strong{ color: var(--ink); font-weight: 600; }
.article a{ color: var(--pencil-red); text-decoration: underline; text-underline-offset: 2px; }
.article a:hover{ color: var(--ink); }
.article code{
  font-family:'JetBrains Mono', monospace; font-size: 0.9em;
  background: rgba(38,52,73,0.07); padding: 1px 5px; border-radius: 3px; color: var(--ink);
}
.article hr{ border:0; border-top:1px solid var(--rule); margin: 34px 0; }

/* Pull-out note, styled like a margin annotation */
.note{
  border-left: 3px solid var(--pencil-red); background: rgba(162,62,44,0.055);
  padding: 14px 16px; margin: 22px 0; border-radius: 0 5px 5px 0;
}
.note p{ margin: 0; font-size: 13.5px; }
.note p + p{ margin-top: 9px; }
.note-label{
  display:block; font-family:'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--pencil-red);
  margin-bottom: 6px; font-weight: 700;
}

/* ---------- Figures / grid diagrams ---------- */

.figure{ margin: 26px 0; text-align:center; }
.figure svg{ width:100%; max-width: 380px; height:auto; }
.figure figcaption{
  font-family: 'Inter', sans-serif; font-size: 12.5px; line-height: 1.6;
  color: var(--ink-faint); margin-top: 10px; max-width: 54ch;
  margin-left:auto; margin-right:auto;
}

/* ---------- Guide index cards ---------- */

.guide-list{ list-style:none; padding:0; margin: 0; max-width: 68ch; margin-inline:auto; }
.guide-list li{ border-top: 1px solid var(--rule); margin:0; }
.guide-list li:last-child{ border-bottom: 1px solid var(--rule); }
.guide-list a{
  display:block; padding: 18px 4px; text-decoration:none; color: var(--ink);
  transition: background-color .12s ease;
}
.guide-list a:hover{ background: rgba(38,52,73,0.045); }
.guide-list h2{
  font-family:'Fraunces', serif; font-style: italic; font-weight:600; font-size: 19px;
  margin: 0 0 4px; color: var(--ink);
}
.guide-list p{
  font-family:'Inter', sans-serif; font-size: 13.5px; line-height:1.6;
  color: var(--ink-soft); margin: 0;
}
.guide-level{
  font-family:'JetBrains Mono', monospace; font-size: 10px; letter-spacing:.14em;
  text-transform:uppercase; color: var(--pencil-red); display:block; margin-bottom: 5px;
}

/* ---------- Next / previous ---------- */

.readnext{
  margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--rule);
  max-width: 68ch; margin-inline:auto;
}
.readnext .label{
  display:block; font-family:'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: 0.16em; text-transform:uppercase; color: var(--ink-soft); margin-bottom: 10px;
}
.readnext a{
  font-family:'Fraunces', serif; font-style:italic; font-weight:600; font-size: 18px;
  color: var(--ink); text-decoration:none;
}
.readnext a:hover{ color: var(--pencil-red); }

/* ---------- Play call-to-action ---------- */

.play-cta{
  display:inline-block; font-family:'Inter', sans-serif; font-size: 14px; font-weight:700;
  padding: 13px 24px; background: var(--ink); color: var(--paper);
  border-radius: 6px; text-decoration:none; transition: background .15s ease;
}
.play-cta:hover{ background: #33456A; color: var(--paper); }
.cta-wrap{ text-align:center; margin: 36px 0 0; }

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

.site-footer{
  margin-top: 44px; padding-top: 20px; border-top: 1px solid var(--rule);
  text-align:center;
}
.site-footer nav{ display:flex; flex-wrap:wrap; justify-content:center; gap: 6px 18px; margin-bottom: 12px; }
.site-footer a{
  font-family:'Inter', sans-serif; font-size: 12.5px; color: var(--ink-soft); text-decoration:none;
}
.site-footer a:hover{ color: var(--pencil-red); text-decoration: underline; }
.site-footer p{
  font-family:'JetBrains Mono', monospace; font-size: 11px; color: var(--ink-faint); margin: 0;
}

a:focus-visible, button:focus-visible{ outline: 2.5px solid var(--pencil-red); outline-offset: 2px; }

.sitenav a, .site-footer a, .guide-list a, .play-cta{
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

@media (prefers-reduced-motion: reduce){ *{ transition: none !important; } }

@media (max-width: 620px){
  body{ padding: 12px 10px 36px; }
  .page{ padding: 14px clamp(12px, 3.5vw, 22px) 26px; border-radius: 8px; }

  .spiral{ margin: -14px -8px 14px; padding-top: 8px; gap: clamp(8px, 2.4vw, 15px); }
  .spiral span{ width: 9px; height: 9px; }

  .masthead{ margin-bottom: 12px; }
  .eyebrow{ font-size: 10px; letter-spacing: 0.18em; }
  .title{ font-size: 28px; }
  .title::after{ width: 64px; height: 2.5px; margin-top: 8px; }

  .sitenav{ padding: 8px 2px; margin-bottom: 20px; gap: 3px 14px; }
  .sitenav a{ font-size: 10.5px; }

  /* Slightly larger body text and looser leading for reading on a phone */
  .article p, .article li{ font-size: 15px; line-height: 1.75; }
  .standfirst{ font-size: 16px; margin-bottom: 22px; padding-bottom: 18px; }
  .article h2{ margin-top: 30px; }
  .article ul, .article ol{ padding-left: 18px; }

  /* Diagrams get the full column width — they're the point of these pages */
  .figure{ margin: 22px -4px; }
  .figure svg{ max-width: 100%; }
  .figure figcaption{ font-size: 12px; padding: 0 6px; }

  .guide-list a{ padding: 15px 2px; }
  .guide-list h2{ font-size: 17.5px; }

  .play-cta{ display: block; padding: 15px 20px; }
  .site-footer nav{ gap: 8px 16px; }
}