*, *::before, *::after { box-sizing: border-box; }
img { max-width: 100%; height: auto; display: block; }

:root{
  --primary:#2c3e50;
  --accent:#b8860b;
  --text:#34495e;
  --bg:#f9fbfd;
  --card-bg:#ffffff;
  --border:#dddddd;
  --contact-bg:#edf2f7;
  --logo-bg:#ffffff;
  --shadow-strong: 0 8px 20px rgba(0,0,0,0.08);
  --shadow: 0 3px 10px rgba(0,0,0,0.04);
}

@media (prefers-color-scheme: dark){
  :root{
    --primary:#ecf0f1;
    --accent:#d4af37;
    --text:#bdc3c7;
    --bg:#1a1a1a;
    --card-bg:#2c2c2c;
    --border:#444444;
    --contact-bg:#2d3748;
    --logo-bg:#2c2c2c;
    --shadow-strong: 0 8px 22px rgba(0,0,0,0.25);
    --shadow: 0 3px 10px rgba(0,0,0,0.18);
  }
}

html { scroll-behavior: smooth; }

body{
  margin:0;
  font-family: Georgia, "Times New Roman", serif;
  line-height:1.6;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

.container{
  max-width: 860px;
  margin: 0 auto;
  padding: 46px 20px 80px;
}

header{
  text-align:center;
  margin-bottom: 34px;
}

/* Logo container for inline SVG */
.logo{
  width: 120px;
  height: 120px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--logo-bg);
  box-shadow: var(--shadow-strong);
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo svg{
  width: 100%;
  height: 100%;
}

h1{
  margin: 0 0 10px;
  font-size: clamp(1.9rem, 6vw, 2.6rem);
  font-weight: normal;
  letter-spacing: 1.4px;
  color: var(--primary);
}

header .stack{
  display:grid;
  gap:10px;
  justify-items:center;
}

.tagline{
  margin:0;
  font-style:italic;
  color:var(--accent);
  font-size: clamp(1rem, 2.5vw, 1.15rem);
}

.tagline-hindi{
  margin:0;
  font-style:italic;
  font-size: 1.02rem;
  color: var(--primary);
  opacity: 0.9;
  font-family: "Noto Serif Devanagari","Mangal",serif;
}

.invocation{
  margin:0;
  font-style:italic;
  font-size: 0.95rem;
  color: var(--primary);
  opacity: 0.82;
  max-width: 62ch;
}

/* Language switch */
.langbar-wrap{
  margin: 18px auto 0;
  display:flex;
  justify-content:center;
  gap: 10px;
  align-items:center;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-size: 0.92rem;
  color: var(--primary);
}

.langbar{
  display: inline-flex;
  gap: 10px;
  align-items: center;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.35);
}
@media (prefers-color-scheme: dark){
  .langbar{ background: rgba(0,0,0,0.18); }
}

.langbtn{
  appearance:none;
  border:0;
  background: transparent;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.92rem;
}
.langbtn[aria-pressed="true"]{
  background: var(--card-bg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.langbtn:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Section nav */
nav{
  margin: 18px auto 0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 12px;
  justify-content:center;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-size:0.92rem;
}
nav a{
  color: var(--primary);
  text-decoration:none;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.35);
}
@media (prefers-color-scheme: dark){
  nav a{ background: rgba(0,0,0,0.18); }
}
nav a:hover{ text-decoration: underline; }
nav a:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 999px;
}

.noscript-note{
  margin: 16px auto 0;
  max-width: 60ch;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-size: 0.95rem;
  opacity: 0.85;
}

main{
  max-width: 70ch;
  margin: 0 auto;
}

h2{
  margin: 34px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  font-size: 1.02rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-weight: normal;
  color: var(--primary);
}

p{ margin: 0 0 14px; }

.highlight{
  margin: 18px 0 6px;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
  font-style: italic;
  color: var(--primary);
}

.principles-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.principle-item{
  background: var(--card-bg);
  padding: 18px;
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow);
}

.contact-box{
  margin-top: 44px;
  padding: 30px 18px;
  background: var(--contact-bg);
  border-radius: 14px;
  text-align: center;
}

.contact-box h3{
  margin: 0 0 8px;
  font-weight: normal;
  color: var(--primary);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  letter-spacing: 0.4px;
}

a{
  color: var(--accent);
  text-decoration:none;
  font-weight:bold;
}
a:hover{ text-decoration: underline; }
a:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

footer{
  margin-top: 62px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  text-align:center;
  font-size: 0.9rem;
  opacity: 0.78;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}
footer p{ margin: 6px 0; }

/* Language blocks:
   No JS: English shows, Hindi hidden.
   JS enabled: only .is-active shows. */
[data-lang-block="hi"] { display: none; }
html.js [data-lang-block] { display: none; }
html.js [data-lang-block].is-active { display: block; }

/* Hindi readability */
.hi{
  font-family: "Noto Serif Devanagari","Mangal",serif;
  line-height: 1.75;
}

/* Back to top */
.back-to-top{
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 999;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--primary);
  box-shadow: var(--shadow-strong);
  cursor: pointer;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.back-to-top.is-visible{
  opacity: 0.95;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover{ opacity: 1; }
.back-to-top:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

@media (max-width: 600px){
  .container{ padding: 40px 18px 70px; }
  .logo{ width: 104px; height: 104px; }
  header{ margin-bottom: 28px; }
  h2{ margin-top: 28px; }
  .principles-grid{ grid-template-columns: 1fr; }
  nav{ gap: 8px 10px; }
  nav a{ padding: 7px 9px; }
  .back-to-top{ right: 12px; bottom: 12px; padding: 10px 12px; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .back-to-top{ transition: none; }
}