/* ScolioSim guides: shared styles for /guides/ and /es/guias/.
   Variables, nav, buttons and footer follow landing-dist/index.html. */
:root {
  --bg: #000000;
  --bg2: #0a0a0f;
  --text: #e8e8ed;
  --text-dim: #8e8e93;
  --text-soft: #b9b9c0;
  --accent: #00d4ff;
  --accent2: #0088cc;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --line: rgba(255, 255, 255, 0.08);
  --gradient: linear-gradient(135deg, #00d4ff 0%, #0088cc 50%, #6c5ce7 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--accent); }

/* ===== NAV ===== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.logo { font-size: 1.3rem; font-weight: 800; letter-spacing: -0.5px; }
.logo span { color: var(--accent); }
.logo, .footer-logo { display: inline-flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; }
.logo img { width: 34px; height: 34px; border-radius: 8px; box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.28); }
.footer-logo img { width: 44px; height: 44px; border-radius: 10px; box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.28); }

.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--accent); }
.nav-links .nav-cta {
  background: var(--gradient);
  color: #fff;
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: 600;
  white-space: nowrap;
}
.nav-links .nav-cta:hover { color: #fff; }

/* ===== ARTICLE ===== */
.article {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px 16px 64px;
}

.breadcrumb { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 28px; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 8px; }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; opacity: 0.5; }
.breadcrumb a { color: var(--text-dim); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }

.article h1 {
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 20px;
}
.article .lead { font-size: 1.15rem; color: var(--text-soft); line-height: 1.7; margin-bottom: 8px; }
.article h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.4px;
  line-height: 1.25;
  margin: 44px 0 14px;
}
.article h3 { font-size: 1.1rem; font-weight: 700; margin: 28px 0 8px; }
.article p { line-height: 1.7; margin-bottom: 16px; color: var(--text); }
.article ul, .article ol { margin: 0 0 18px 1.3em; line-height: 1.7; }
.article li { margin-bottom: 6px; }
.article strong { font-weight: 600; }
.article code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: rgba(255,255,255,0.07); padding: 1px 6px; border-radius: 5px; font-size: 0.92em; }
.cite { white-space: nowrap; font-size: 0.92em; }

.formula {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 16px;
  overflow-x: auto;
}

.table-wrap { overflow-x: auto; margin: 0 0 22px; border: 1px solid var(--line); border-radius: 12px; }
.table-wrap table { border-collapse: collapse; width: 100%; font-size: 0.92rem; min-width: 420px; }
.table-wrap caption { text-align: left; padding: 10px 14px; color: var(--text-dim); font-size: 0.85rem; caption-side: bottom; }
.table-wrap th, .table-wrap td { padding: 9px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-wrap th { background: var(--bg2); font-weight: 600; color: var(--text); }
.table-wrap tr:last-child td { border-bottom: 0; }

.note {
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 12px;
  padding: 14px 18px;
  margin: 0 0 22px;
  color: var(--text);
}
.note p { margin: 0; }
.note p + p { margin-top: 10px; }

.article figure { margin: 28px 0; }
.article figure img { width: 100%; height: auto; display: block; border-radius: 14px; border: 1px solid var(--line); }
.article figcaption { margin-top: 8px; font-size: 0.88rem; color: var(--text-dim); }

.cta {
  margin: 44px 0 8px;
  padding: 28px 22px;
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 18px;
  background: var(--bg2);
  text-align: center;
}
.cta p { color: var(--text-soft); margin-bottom: 18px; }
.btn-primary {
  display: inline-block;
  background: var(--gradient);
  color: #fff;
  text-decoration: none;
  padding: 13px 30px;
  border-radius: 30px;
  font-weight: 600;
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
  transition: all 0.3s;
}
.btn-primary:hover { box-shadow: 0 0 50px rgba(0, 212, 255, 0.5); transform: translateY(-2px); color: #fff; }

.related { margin-top: 48px; }
.related ul, .guide-list { list-style: none; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; }
.related li, .guide-list li { margin: 0; }
.related a, .guide-card {
  display: block;
  height: 100%;
  padding: 16px 18px;
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 14px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  transition: border-color 0.3s;
}
.related a:hover, .guide-card:hover { border-color: rgba(0, 212, 255, 0.35); }
.guide-card h2 { font-size: 1.2rem; margin: 0 0 8px; letter-spacing: -0.2px; }
.guide-card p { font-weight: 400; color: var(--text-dim); font-size: 0.95rem; margin: 0; }
.guide-list { grid-template-columns: 1fr; margin-top: 28px; }

.refs ol { margin-left: 1.4em; }
.refs li { color: var(--text-soft); font-size: 0.92rem; line-height: 1.55; margin-bottom: 10px; }
.refs li:target { background: var(--accent-glow); border-radius: 6px; }

/* ===== FOOTER ===== */
footer { border-top: 1px solid rgba(255, 255, 255, 0.06); padding: 48px 16px; text-align: center; }
.disclaimer { color: var(--text-dim); font-size: 0.85rem; max-width: 760px; margin: 0 auto 16px; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; margin: 18px 0 26px; }
.footer-links a { color: var(--text-dim); text-decoration: none; font-size: 0.9rem; }
.footer-links a:hover { color: var(--accent); }
.footer-logo { font-size: 1.2rem; font-weight: 800; margin-bottom: 16px; }
.footer-logo span { color: var(--accent); }
footer p { color: var(--text-dim); font-size: 0.85rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .site-nav { padding: 12px 16px; }
  .logo b { display: none; }
  .nav-links { gap: 14px; }
  .nav-links .nav-cta { padding: 8px 14px; }
  .article { padding-top: 24px; }
  .article h2 { margin-top: 36px; }
}