/* Light palette (default), adapted from LlamaNexus-PHP's own light palette (itself ported from
   LlamaNexus-WebUI's light theme) - same neutral scale + accent this site's dark palette below
   already shared with LlamaNexus-PHP. */
:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-sidebar: #f7f6f4;
  --bg-elevated: #ffffff;
  --border: #e5e3df;
  --text: #2d2a26;
  --text-muted: #6b6862;
  --accent: #cc7a4d;
  --accent-hover: #b8683d;
  --accent-soft: color-mix(in srgb, var(--accent) 15%, var(--bg));
}

/* Dark palette + component styles, adapted from LlamaNexus-PHP's docroot/assets/style.css - same
   "similar style" dark theme, trimmed down to what a pure marketing site needs (no accounts, no
   billing, no Markdown docs pipeline live here - see that repo for the fuller version). Applied
   on an explicit dark choice (theme-toggle in site_nav(), stored in localStorage - see the
   inline script in render_page_start()), which always wins over the OS preference below. */
:root[data-theme='dark'] {
  color-scheme: dark;
  --bg: #1e1e1e;
  --bg-sidebar: #181818;
  --bg-elevated: #262624;
  --border: #3a3835;
  --text: #e8e6e1;
  --text-muted: #a19d95;
  --accent: #d88a5c;
  --accent-hover: #e5996a;
  --accent-soft: color-mix(in srgb, var(--accent) 15%, var(--bg));
}

/* :not([data-theme='light']) - an explicit light choice must opt out of this even when the OS
   itself prefers dark. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    color-scheme: dark;
    --bg: #1e1e1e;
    --bg-sidebar: #181818;
    --bg-elevated: #262624;
    --border: #3a3835;
    --text: #e8e6e1;
    --text-muted: #a19d95;
    --accent: #d88a5c;
    --accent-hover: #e5996a;
    --accent-soft: color-mix(in srgb, var(--accent) 15%, var(--bg));
  }
}

* { box-sizing: border-box; }

/* Reserves the vertical scrollbar's width unconditionally, whether or not a given page's content
   is actually tall enough to need one. Without this, every margin:0 auto centered block sits at
   a slightly different horizontal position on a short page (no scrollbar) than on a long one
   (scrollbar present). */
html { scrollbar-gutter: stable; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

* { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--border); border-radius: 8px; border: 2px solid transparent; background-clip: padding-box; }

a { color: inherit; text-decoration: none; }
.link-strong { color: var(--accent); font-weight: 600; }
.link-strong:hover { text-decoration: underline; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  text-align: center;
  transition: transform 0.1s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { opacity: 0.9; }
.btn-outline { background: none; border-color: var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg-elevated); border-color: var(--accent); }

/* Header / nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-brand { display: flex; align-items: center; gap: 9px; font-weight: 800; letter-spacing: -0.01em; font-size: 17px; }
.site-brand img { width: 26px; height: 26px; border-radius: 7px; }
.site-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; font-weight: 600; color: var(--text-muted); }
.site-nav a:hover { color: var(--text); }
.site-nav a.active { color: var(--text); }

/* Light/dark switcher (site_nav()) - same two-button sun/moon group as ZenBooks-PHP's own, and
   the Node ZenBooks app's ThemeToggle before that. */
.theme-toggle {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px;
  gap: 2px;
}
.theme-toggle button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: none;
  border-radius: 999px;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
}
.theme-toggle button:hover { color: var(--text); }
.theme-toggle button.active { background: var(--accent); color: #fff; }

/* Landing / hero */
.hero { max-width: 760px; margin: 0 auto; padding: 90px 24px 70px; text-align: center; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 24px;
}
.hero h1 { font-size: clamp(32px, 5vw, 52px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; margin: 0; }
.hero-subtitle { margin: 22px auto 0; max-width: 560px; color: var(--text-muted); font-size: 18px; }
.hero-actions { margin-top: 34px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Smaller hero variant for product sub-pages */
.page-hero { max-width: 760px; margin: 0 auto; padding: 56px 24px 32px; text-align: center; }
.page-hero-kicker { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); }
.page-hero h1 { font-size: 32px; font-weight: 700; letter-spacing: -0.01em; margin: 8px 0 0; }
.page-hero-subtitle { margin: 14px auto 0; max-width: 600px; color: var(--text-muted); font-size: 16px; }
.page-hero-actions { margin-top: 24px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.product-grid {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 80px;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.product-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: 12px;
  padding: 26px;
  transition: border-color 0.15s;
}
.product-card:hover { border-color: var(--accent); }
.product-card-kicker { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); }
.product-card h3 { margin: 8px 0 0; font-size: 16px; font-weight: 700; }
.product-card-tagline { margin: 4px 0 0; font-size: 13px; font-weight: 600; color: var(--text-muted); }
.product-card-description { margin: 10px 0 0; font-size: 14px; color: var(--text-muted); flex: 1; }
.product-card-link { margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--accent); }
.product-card:hover .product-card-link { text-decoration: underline; }

/* Prose content on product pages (features/download) */
.page-content { max-width: 760px; margin: 0 auto; padding: 8px 24px 80px; flex: 1; }
.page-content h2 { font-size: 22px; margin: 40px 0 14px; letter-spacing: -0.01em; }
.page-content h2:first-child { margin-top: 0; }
.page-content h3 { font-size: 16px; margin: 24px 0 8px; }
.page-content p { color: var(--text); }
.page-content a { color: var(--accent); }
.page-content a:hover { text-decoration: underline; }
.page-content ul, .page-content ol { padding-left: 22px; }
.page-content li { margin: 5px 0; }
.page-content code { background: var(--bg-elevated); border-radius: 4px; padding: 1px 5px; font-size: 0.9em; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.page-content table { border-collapse: collapse; width: 100%; margin: 16px 0; font-size: 13.5px; }
.page-content th, .page-content td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; }
.page-content th { background: var(--bg-elevated); }
.page-content hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }

.callout {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: 10px;
  padding: 16px 18px;
  margin: 20px 0;
  font-size: 14px;
}
.callout strong { color: var(--accent); }

.legal-note { font-size: 13px; color: var(--text-muted); margin-top: 20px; }

/* 404 */
.not-found { max-width: 480px; margin: 0 auto; padding: 100px 24px; text-align: center; flex: 1; }
.not-found h1 { font-size: 56px; margin: 0; color: var(--text-muted); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); margin-top: auto; }
.site-footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
}