/* Crypto Factory global styles — focused on readability & clean cards
   - system-ui stack (fast, no external fonts)
   - comfortable line length
   - card + button components
   - responsive container/grid
   - minimal, SEO-friendly defaults
*/

:root{
  --bg: #0b0d12;
  --bg-elev: #11141b;
  --bg-elev-2: #161a22;
  --text: #e8edf2;
  --text-dim: #b5c0cc;
  --primary: #5cc8ff;
  --primary-ink: #06121a;
  --accent: #9bffd1;
  --border: #232a36;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 6px 22px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html,body { height: 100%; }
body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a{ color: var(--primary); text-decoration: none; }
a:hover{ text-decoration: underline; }

img{ max-width: 100%; height: auto; border-radius: var(--radius-sm); }

/* Layout */
.container{
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px;
}
.prose{
  max-width: 74ch;
  margin: 0 auto;
}
main.prose p{ color: var(--text); }
main.prose p + p{ margin-top: 0.9rem; }
main.prose h1, main.prose h2, main.prose h3{
  line-height: 1.25;
  margin: 1.6rem 0 .6rem;
}
h1{ font-size: clamp(1.9rem, 2.6vw, 2.4rem); }
h2{ font-size: clamp(1.45rem, 2.0vw, 1.8rem); }
h3{ font-size: clamp(1.2rem, 1.6vw, 1.3rem); }
ul,ol{ padding-left: 1.2rem; }
blockquote{
  margin: 1.2rem 0; padding: 1rem 1.2rem;
  background: var(--bg-elev); border-left: 3px solid var(--primary); color: var(--text-dim);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Header / Footer */
.site-header{
  position: sticky; top: 0; z-index: 50;
  background: rgba(11,13,18,.75); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .nav{
  display: flex; align-items: center; gap: 18px;
}
.brand{
  font-weight: 700; letter-spacing: .2px; margin-right: auto;
}
.nav a{
  display: inline-block; padding: 10px 12px; border-radius: 10px;
}
.nav a:hover{ background: var(--bg-elev); text-decoration: none; }

.site-footer{
  margin-top: 56px; padding: 32px 0;
  border-top: 1px solid var(--border); color: var(--text-dim);
  background: var(--bg-elev);
}

/* Cards & grids */
.grid{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}
.card{
  background: linear-gradient(180deg, var(--bg-elev), var(--bg-elev-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.card:hover{
  transform: translateY(-2px);
  border-color: rgba(92,200,255,.45);
}
.card .card-body{ padding: 18px; }
.card h3{ margin: 0 0 6px; }
.card p{ margin: 0; color: var(--text-dim); }

/* Buttons */
.btn{
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-radius: 9999px; font-weight: 600;
  border: 1px solid var(--border); background: var(--bg-elev-2);
}
.btn:hover{ filter: brightness(1.05); text-decoration: none; }
.btn-primary{
  background: var(--primary);
  color: var(--primary-ink);
  border-color: rgba(92,200,255,.65);
}
.btn-ghost{
  background: transparent; border-color: var(--border); color: var(--text);
}

/* Meta badges */
.badge{
  display: inline-block; font-size: 12px; padding: 4px 8px;
  border-radius: 9999px; border: 1px solid var(--border); color: var(--text-dim);
}

/* Tables & code */
table{ width: 100%; border-collapse: collapse; overflow: hidden; border-radius: var(--radius-sm); }
thead{ background: var(--bg-elev); }
td,th{ padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; }
pre, code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}
pre{
  background: var(--bg-elev); padding: 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); overflow: auto;
}

/* Utility */
.muted{ color: var(--text-dim); }
.stack-sm > * + *{ margin-top: .35rem; }
.stack > * + *{ margin-top: .75rem; }
.stack-lg > * + *{ margin-top: 1.2rem; }

/* Article scaffolding if page lacks structured wrapper */
main.container.prose .meta{
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: .6rem 0 1.2rem;
}
.toc-sticky{
  position: sticky; top: 84px;
}

/* Responsive tweaks */
@media (max-width: 720px){
  .nav a{ padding: 8px 10px; }
  .container{ padding: 18px; }
}