/* STV Product Site - GHC Consulting */
:root {
  --green: #00994C;
  --green-dark: #007a3d;
  --ink: #1a1a1a;
  --muted: #5a5a5a;
  --bg: #ffffff;
  --bg-warm: #faf8f4;
  --border: #e5e0d8;
  --radius: 10px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}
a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  background: var(--ink);
  color: #fff;
  padding: 0.9rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
}
.brand img { height: 36px; width: 36px; }
.brand:hover { text-decoration: none; }
nav.main-nav { display: flex; gap: 1.4rem; }
nav.main-nav a { color: #ddd; font-size: 0.95rem; }
nav.main-nav a:hover, nav.main-nav a.active { color: #fff; text-decoration: none; }
nav.main-nav a.active { border-bottom: 2px solid var(--green); padding-bottom: 2px; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 1.25rem; }

/* Hero */
.hero {
  background: linear-gradient(135deg, #f4faf6 0%, #eaf5ee 100%);
  padding: 4rem 0 3.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero h1 { font-size: 2.6rem; margin-bottom: 0.5rem; }
.hero h1 .accent { color: var(--green); }
.hero p.tagline {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 1.8rem;
}
.btn {
  display: inline-block;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid var(--green);
  cursor: pointer;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); text-decoration: none; color: #fff; }
.btn-outline { background: transparent; color: var(--green); }
.btn-outline:hover { background: #eaf5ee; text-decoration: none; }
.btn-row { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; }
.hero .version { margin-top: 1rem; color: var(--muted); font-size: 0.9rem; }

/* Sections */
section.block { padding: 3rem 0; }
section.block.alt { background: var(--bg-warm); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
section.block h2 { font-size: 1.8rem; margin-bottom: 1.2rem; text-align: center; }
.lead { text-align: center; color: var(--muted); max-width: 680px; margin: 0 auto 2rem; }

/* Feature grid */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.4rem;
}
.feature {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.feature h3 { font-size: 1.1rem; margin-bottom: 0.5rem; color: var(--green-dark); }
.feature p { color: var(--muted); font-size: 0.95rem; }

/* Download cards */
.dl-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.4rem;
  margin-top: 1.5rem;
}
.dl-card {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem;
  text-align: center;
  background: #fff;
}
.dl-card h3 { margin-bottom: 0.4rem; }
.dl-card p { color: var(--muted); font-size: 0.9rem; margin-bottom: 1.2rem; }
.dl-card .btn { width: 100%; }

/* Manual */
.manual-toc {
  background: var(--bg-warm);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  margin-bottom: 2rem;
  columns: 2;
}
.manual-toc li { margin-bottom: 0.3rem; }
.manual-body h2 {
  margin: 2.2rem 0 0.8rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  text-align: left;
}
.manual-body h3 { margin: 1.4rem 0 0.6rem; }
.manual-body table { border-collapse: collapse; margin: 1rem 0; width: 100%; }
.manual-body th, .manual-body td { border: 1px solid #ccc; padding: 8px 12px; text-align: left; }
.manual-body th { background: #f0f0f0; }
.manual-body img { max-width: 100%; height: auto; vertical-align: middle; }
.manual-body ul, .manual-body ol { margin: 0.6rem 0 0.6rem 1.5rem; }
.manual-body code { background: #f4f4f4; padding: 2px 6px; border-radius: 4px; font-size: 0.9em; }

/* Screenshots */
.shot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}
.shot {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}
.shot .img-placeholder {
  background: #eef2f0;
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
  padding: 1rem;
}
.shot .caption { padding: 1rem 1.2rem; }
.shot .caption h3 { font-size: 1rem; margin-bottom: 0.3rem; }
.shot .caption p { color: var(--muted); font-size: 0.9rem; }

/* Tutorials */
.tutorial {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem;
  margin-bottom: 1.5rem;
}
.tutorial h3 { color: var(--green-dark); margin-bottom: 0.8rem; }
.tutorial ol { margin-left: 1.4rem; }
.tutorial li { margin-bottom: 0.6rem; }
.tutorial code { background: #f4f4f4; padding: 2px 6px; border-radius: 4px; }

/* Footer */
.site-footer {
  background: var(--ink);
  color: #aaa;
  padding: 2.5rem 0;
  margin-top: 3rem;
  font-size: 0.9rem;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.site-footer a { color: #ddd; }
.site-footer strong { color: #fff; }

@media (max-width: 700px) {
  .hero h1 { font-size: 2rem; }
  nav.main-nav { gap: 0.9rem; font-size: 0.85rem; }
  .manual-toc { columns: 1; }
}