/* Basic responsive, accessible styles */
:root {
  --bg: #0f1115;
  --bg-alt: #1b1f24;
  --accent: #3b82f6;
  --accent-alt: #2563eb;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --radius: 6px;
  --max-width: 980px;
  --shadow: 0 4px 14px rgba(0,0,0,0.35);
  --focus: 2px solid #3b82f6;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover, a:focus { text-decoration: underline; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 1.75rem 1.25rem; }
.site-header { background: linear-gradient(135deg,#1b2735,#121720); padding: 2.5rem 0 2rem; text-align: center; }
.site-header h1 { margin: 0 0 .5rem; font-size: clamp(1.9rem,4vw,2.6rem); }
.tagline { margin: 0 0 1rem; font-size: 1.1rem; color: var(--muted); }
.cta { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; margin: 1rem 0; }
.btn { display: inline-block; padding: .8rem 1.15rem; border-radius: var(--radius); font-weight: 600; background: var(--bg-alt); color: var(--text); border: 1px solid #2b313a; box-shadow: var(--shadow); transition: background .15s,border-color .15s,transform .15s; }
.btn.primary { background: var(--accent); border-color: var(--accent-alt); }
.btn.secondary { background: #374151; }
.btn.disabled { opacity: .55; pointer-events: none; }
.btn:not(.disabled):hover { transform: translateY(-2px); }
.btn:focus-visible { outline: var(--focus); }
.small { font-size: .8rem; color: var(--muted); }
main section { padding: 2rem 0; }
.grid.two { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); align-items: start; }
.accent { background: var(--bg-alt); }
img { max-width: 100%; height: auto; border-radius: var(--radius); border: 1px solid #2a313a; }
figure { margin: 0; }
figcaption { font-size: .75rem; margin-top: .5rem; color: var(--muted); }
code { background: #222b33; padding: .2rem .4rem; border-radius: 4px; font-size: .85rem; }
details { background:#222830; padding: .9rem 1rem; border-radius: var(--radius); margin-bottom: .75rem; border:1px solid #2e353d; }
details[open] { border-color: var(--accent); }
details summary { cursor: pointer; font-weight:600; }
.site-footer { text-align: center; font-size: .75rem; padding: 3rem 0 2.5rem; color: var(--muted); }
.site-footer a { color: var(--muted); }
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }