/* Site-wide theme variables and reusable components for VU-VERSE docs */
:root{
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --card-bg: rgba(255,255,255,0.06);
  --card-border: rgba(2,6,23,0.08);
  --hero-gradient: linear-gradient(90deg, #626669 0%, #e68014 100%);
  --accent: #0b5ea8;
  --code-bg: rgba(2,6,23,0.02);
  --font-sans: 'Roboto', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial;
}

/* Dark theme variables */
.theme-dark {
  --bg: #1f1f1f;
  --text: #e6e6e6;
  --muted: #9aa6b2;
  --card-bg: rgba(255,255,255,0.03);
  --card-border: rgba(255,255,255,0.06);
  /* --hero-gradient: linear-gradient(90deg,#183247 0%, #2f3b38 100%); */
  /* --hero-gradient: linear-gradient(90deg, #0b5ea8 0%, #41cd52 100%); */
  --hero-gradient: linear-gradient(90deg, #626669 0%, #e68014 100%);
  --accent: #9ec5ff;
  --code-bg: rgba(255,255,255,0.03);
}

/* Base */
html,body{background:var(--bg);color:var(--text);font-family:var(--font-sans);line-height:1.5}

/* Hero */
.hero{background:var(--hero-gradient);color:white;padding:32px;border-radius:12px;margin-bottom:18px}
.hero h1{margin:0 0 6px 0;font-size:2.4rem}
.hero p.lead{margin:0;opacity:0.95}

/* CTA */
.cta{display:flex;gap:12px;align-items:center}
.cta a.btn{background:rgba(255,255,255,0.12);color:white;padding:10px 14px;border-radius:8px;text-decoration:none;font-weight:600}

/* Tech row */
.tech-row{display:flex;gap:12px;align-items:center;margin-top:12px}
.tech-row img{height:44px;border-radius:6px;background:rgba(255,255,255,0.06);padding:6px}

/* Mermaid container tweaks for better visuals */
.mermaid{max-width:100%;margin:18px auto;padding:12px;border-radius:10px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.00));box-shadow:0 10px 30px rgba(2,6,23,0.06);border:1px solid rgba(2,6,23,0.04)}
.mermaid svg{width:100%!important;height:auto!important}

/* Allow images embedded in Mermaid HTML labels to size and align */
.mermaid img{height:40px;vertical-align:middle;margin-right:8px}
.mermaid .nodeLabel, .mermaid .label { dominant-baseline:middle }

/* Increase Mermaid diagram font sizes for readability */
.mermaid svg text { font-size: 42px !important; fill: var(--text) !important; }
.mermaid svg tspan { font-size: 42px !important; }
.mermaid svg .label, .mermaid svg .nodeLabel { font-size: 42px !important; font-weight: 800 !important; }
.mermaid svg .edgeLabel, .mermaid svg .edgeLabel tspan { font-size: 26px !important; }
.mermaid svg .titleText { font-size: 48px !important; font-weight: 900 !important; }

/* Remove SVG scale to keep text crisp; rely on explicit font sizing above */
.mermaid svg { transform-origin: 50% 50%; transform: none; }

/* Card component */
.card{background:var(--card-bg);backdrop-filter:blur(8px);border:1px solid var(--card-border);border-radius:10px;padding:18px;box-shadow:0 8px 24px rgba(2,6,23,0.04);color:var(--text);margin-bottom:12px}
.card h3{margin:0 0 6px 0}
.card p,.card li{margin-top:10px;color:var(--muted)}

/* Heading logo helper: places a small logo to the left of section headings */
.heading-with-logo{display:flex;align-items:center;gap:10px}
.heading-with-logo .heading-logo{height:28px;width:auto;display:inline-block}
.heading-with-logo h3{margin:0}

/* Utility */
.stacked{display:flex;flex-direction:column;gap:14px;margin-top:22px}

/* Images */
img{max-width:100%;height:auto}

/* Code and pre */
code, pre{background:var(--code-bg);padding:2px 6px;border-radius:4px}

/* Theme toggle button baseline (can be extended by theme-toggle.css) */
.theme-toggle-btn{background:rgba(0,0,0,0.04);border:1px solid rgba(0,0,0,0.06);padding:6px 8px;border-radius:6px;cursor:pointer}
.theme-toggle-btn:hover{filter:brightness(1.05)}

/* Accessibility: focus */
.theme-toggle-btn:focus{outline:2px solid var(--accent);outline-offset:2px}

/* Small responsive tweaks */
@media (max-width:700px){.hero h1{font-size:1.6rem}.tech-row img{height:34px}}

/* Remove unwanted gradient/overlay on the site title in dark mode and ensure readable color */
.theme-dark .md-nav__title,
.theme-dark .md-header-nav__title,
.theme-dark .md-logo__link,
.theme-dark .md-nav__title a,
.theme-dark .md-header__title {
  background: none !important;
  background-image: none !important;
  -webkit-background-clip: unset !important;
  color: var(--text) !important;
  text-shadow: none !important;
}

/* Also ensure the sidebar title uses our text color in both themes */
.md-nav__title, .md-header-nav__title { color: var(--text) !important }

/* Strong overrides to remove any residual background, borders, or pseudo-elements
   around the site title/logo in the header or sidebar (covers both themes). */
.md-sidebar .md-logo, .md-sidebar .md-logo__link, .md-header .md-logo__link,
.md-nav__title, .md-header__title, .md-header-nav__title {
  background: transparent !important;
  background-image: none !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

/* Remove decorative pseudo-elements that some themes add */
.md-nav__title::before, .md-nav__title::after, .md-header__title::before, .md-header__title::after {
  display: none !important;
  content: none !important;
  background: none !important;
}

/* Ensure the logo link area is transparent and uses site text color */
.md-logo__link, .md-logo { background: transparent !important; color: var(--text) !important }

/* Dark-mode explicit: no light gradient or outline */
.theme-dark .md-sidebar .md-logo, .theme-dark .md-nav__title, .theme-dark .md-header__title {
  background: transparent !important;
  color: var(--text) !important;
  border-color: transparent !important;
}