/* ===========================================================
   2030B Ontology Department — base stylesheet
   Brand prefix: ont-*
   =========================================================== */
@import url("https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800;900&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,600;9..144,700;9..144,900&family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap");

:root {
  --ont-ink:        #0d0a1f;
  --ont-ink-soft:   #2a2348;
  --ont-paper:      #faf7f2;
  --ont-paper-2:    #f3ece0;
  --ont-gold:       #c9a14a;
  --ont-gold-soft:  #e9d59b;
  --ont-azure:      #1d5dbf;
  --ont-emerald:    #1f8a70;
  --ont-violet:     #5b2bc9;
  --ont-rose:       #c5314f;
  --ont-line:       rgba(13,10,31,0.10);
  --ont-line-strong:rgba(13,10,31,0.18);
  --ont-line-dark:  rgba(255,255,255,0.10);
  --ont-radius:     14px;
  --ont-radius-lg:  20px;
  --ont-shadow-sm:  0 4px 12px -6px rgba(13,10,31,.25);
  --ont-shadow-md:  0 12px 30px -14px rgba(13,10,31,.35);
  --ont-shadow-lg:  0 22px 50px -20px rgba(91,43,201,.45);
  --ont-nav-h:      64px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter','system-ui','sans-serif';
  background: var(--ont-paper);
  color: var(--ont-ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
a { color: var(--ont-violet); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--ont-gold); }
img, svg { max-width: 100%; height: auto; display: block; }
.font-display { font-family: 'Fraunces','Space Grotesk',serif; letter-spacing: -0.01em; }

/* Cairo for Arabic & Urdu */
html[lang="ar"], html[lang="ar"] body,
html[lang="ur"], html[lang="ur"] body {
  font-family: 'Cairo','Amiri','Noto Naskh Arabic',system-ui,sans-serif !important;
}
html[lang="ar"] .font-display, html[lang="ur"] .font-display {
  font-family: 'Cairo','Fraunces',serif !important;
  letter-spacing: 0 !important;
}

/* ===========================================================
   1.  Layout primitives
   =========================================================== */
.ont-container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
}
.ont-section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
  position: relative;
  overflow: hidden;
}
.ont-section--alt {
  background:
    linear-gradient(180deg, var(--ont-paper) 0%, var(--ont-paper-2) 100%);
}
.ont-section h2 {
  font-family: 'Fraunces','Cairo',serif;
  font-weight: 700;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  margin: .4rem 0 1rem;
  color: var(--ont-ink);
}
.ont-section p {
  max-width: 65ch;
  margin: 0 0 1rem;
  color: var(--ont-ink-soft);
  font-size: 1.02rem;
  line-height: 1.75;
}

/* ===========================================================
   2.  Navigation
   =========================================================== */
.ont-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .75rem clamp(1rem, 4vw, 2rem);
  background: rgba(250,247,242,.85);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--ont-line);
  min-height: var(--ont-nav-h);
}
.ont-brand {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: 'Fraunces','Cairo',serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--ont-ink);
  text-decoration: none;
  letter-spacing: -.01em;
}
.ont-brand:hover { color: var(--ont-ink); }
.ont-brand em {
  font-style: normal;
  color: var(--ont-gold);
  margin: 0 .15rem;
}
.ont-brand-mark {
  width: 32px; height: 32px;
  color: var(--ont-violet);
  animation: ont-brand-spin 24s linear infinite;
}
.ont-brand-mark > circle:nth-child(2) {
  animation: ont-brand-spin-rev 18s linear infinite;
  transform-origin: 24px 24px;
}
.ont-brand-mark > circle:nth-child(3) {
  animation: ont-pulse 3.5s ease-in-out infinite;
  transform-origin: 24px 24px;
}
@keyframes ont-brand-spin { to { transform: rotate(360deg); } }
@keyframes ont-brand-spin-rev { to { transform: rotate(-360deg); } }

.ont-links {
  display: flex;
  align-items: center;
  gap: .25rem;
  margin-inline-start: auto;
  flex-wrap: wrap;
}
.ont-links a {
  font-size: .88rem;
  font-weight: 500;
  color: var(--ont-ink-soft);
  padding: .45rem .75rem;
  border-radius: 999px;
  transition: background .2s ease, color .2s ease;
}
.ont-links a:hover { background: rgba(201,161,74,.15); color: var(--ont-violet); }
.ont-links a.is-active { background: rgba(91,43,201,.12); color: var(--ont-violet); }

.ont-lang { margin-inline-start: .5rem; }
.ont-lang select,
#ont-lang-picker {
  font-family: inherit;
  font-size: .82rem;
  padding: .35rem .6rem;
  border-radius: 999px;
  border: 1px solid var(--ont-line-strong);
  background: rgba(255,255,255,.85);
  color: var(--ont-ink);
  cursor: pointer;
  transition: border-color .2s ease;
}
.ont-lang select:hover { border-color: var(--ont-gold); }

@media (max-width: 720px) {
  .ont-links a { font-size: .78rem; padding: .3rem .55rem; }
  .ont-brand span { display: none; }
}

/* ===========================================================
   3.  Hero
   =========================================================== */
.ont-hero {
  position: relative;
  padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(3rem, 7vw, 5rem);
  background:
    radial-gradient(ellipse 60% 50% at 15% 15%, rgba(201,161,74,.18), transparent 60%),
    radial-gradient(ellipse 50% 50% at 85% 30%, rgba(91,43,201,.18), transparent 60%),
    radial-gradient(ellipse 60% 60% at 50% 100%, rgba(29,93,191,.15), transparent 70%),
    var(--ont-paper);
  overflow: hidden;
}
.ont-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(13,10,31,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13,10,31,.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  pointer-events: none;
  opacity: .6;
}
.ont-hero > .ont-container {
  position: relative; z-index: 1;
  max-width: 880px;
  text-align: center;
}
.ont-hero h1 {
  font-family: 'Fraunces','Cairo',serif;
  font-weight: 700;
  font-size: clamp(2.2rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin: 1.25rem 0 1.25rem;
  color: var(--ont-ink);
}
.ont-em {
  font-style: italic;
  background: linear-gradient(120deg, var(--ont-gold) 0%, var(--ont-violet) 60%, var(--ont-azure) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  padding: 0 .15em;
  position: relative;
}
.ont-em::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -.05em;
  height: 4px; border-radius: 4px;
  background: linear-gradient(90deg, var(--ont-gold), var(--ont-violet), var(--ont-azure));
  opacity: .35;
  animation: ont-em-glow 3.6s ease-in-out infinite;
}
@keyframes ont-em-glow {
  0%,100% { opacity: .25; transform: scaleX(.92); }
  50%     { opacity: .65; transform: scaleX(1); }
}
.ont-lede {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.7;
  color: var(--ont-ink-soft);
  max-width: 60ch;
  margin: 0 auto 2rem;
}
.ont-lede em { color: var(--ont-violet); font-style: italic; }

.ont-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  justify-content: center;
  margin-top: 1.5rem;
}

/* ===========================================================
   4.  Chips, buttons
   =========================================================== */
.ont-chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .32rem .8rem;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
  background: linear-gradient(120deg, rgba(201,161,74,.18), rgba(91,43,201,.18));
  color: var(--ont-ink-soft);
  border: 1px solid rgba(201,161,74,.45);
}
html[lang="ar"] .ont-chip, html[lang="ur"] .ont-chip {
  letter-spacing: 0;
  text-transform: none;
  font-size: .78rem;
}

.ont-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .75rem 1.4rem;
  border-radius: 999px;
  font-family: inherit;
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--ont-line-strong);
  background: rgba(255,255,255,.82);
  color: var(--ont-ink);
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.ont-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--ont-shadow-md);
  border-color: var(--ont-gold);
  color: var(--ont-ink);
}
.ont-btn--primary {
  background: linear-gradient(135deg, var(--ont-azure) 0%, var(--ont-violet) 55%, var(--ont-gold) 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--ont-shadow-lg);
}
.ont-btn--primary:hover {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 28px 60px -22px rgba(91,43,201,.7);
  filter: brightness(1.05);
}
.ont-btn--ghost {
  background: transparent;
  border-color: var(--ont-line-strong);
}

/* ===========================================================
   5.  Stages list (home: how a reader becomes an ontologist)
   =========================================================== */
.ont-stages {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 1rem;
  counter-reset: ont-stage;
}
.ont-stages li {
  position: relative;
  padding: 1.25rem 1.4rem 1.25rem 4rem;
  background: rgba(255,255,255,.82);
  border: 1px solid var(--ont-line);
  border-radius: var(--ont-radius-lg);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  counter-increment: ont-stage;
}
html[dir="rtl"] .ont-stages li { padding: 1.25rem 4rem 1.25rem 1.4rem; }
.ont-stages li::before {
  content: counter(ont-stage, decimal-leading-zero);
  position: absolute;
  inset-inline-start: 1.1rem; top: 1.05rem;
  width: 2.4rem;
  font-family: 'Fraunces','Cairo',serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ont-gold);
  line-height: 1;
}
.ont-stages li:hover {
  transform: translateY(-2px);
  border-color: var(--ont-gold);
  box-shadow: var(--ont-shadow-sm);
}
.ont-stages li strong { display: block; font-weight: 700; margin-bottom: .25rem; color: var(--ont-ink); }

/* Pillars: four-up grid */
.ont-pillars {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.ont-pillars li {
  padding: 1.4rem 1.3rem;
  background: rgba(255,255,255,.85);
  border: 1px solid var(--ont-line);
  border-radius: var(--ont-radius-lg);
  position: relative;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.ont-pillars li::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  border-radius: var(--ont-radius-lg) var(--ont-radius-lg) 0 0;
  background: linear-gradient(90deg, var(--ont-gold), var(--ont-violet), var(--ont-azure));
  opacity: .55;
}
.ont-pillars li:hover {
  transform: translateY(-3px);
  border-color: var(--ont-gold);
  box-shadow: var(--ont-shadow-md);
}
.ont-pillars li strong {
  display: block;
  font-family: 'Fraunces','Cairo',serif;
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 .35rem;
  color: var(--ont-violet);
}

/* ===========================================================
   6.  CTA section
   =========================================================== */
.ont-cta {
  padding: clamp(3rem, 7vw, 5rem) 0;
  background:
    radial-gradient(ellipse 60% 60% at 50% 100%, rgba(91,43,201,.2), transparent 70%),
    linear-gradient(180deg, var(--ont-paper-2) 0%, var(--ont-paper) 100%);
  text-align: center;
}
.ont-cta h2 {
  font-family: 'Fraunces','Cairo',serif;
  font-weight: 700;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin: .4rem 0 .8rem;
}
.ont-cta p {
  margin: 0 auto 1.5rem;
  max-width: 56ch;
  color: var(--ont-ink-soft);
  line-height: 1.75;
}
.ont-cta .ont-cta-row { justify-content: center; }

/* ===========================================================
   7.  Generic prose (sub-pages: pages.{slug}.body via HTML)
   =========================================================== */
.ont-prose {
  max-width: 720px;
  margin: 0 auto;
}
.ont-prose h1 {
  font-family: 'Fraunces','Cairo',serif;
  font-weight: 700;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -.01em;
  margin: 0 0 1.2rem;
  color: var(--ont-ink);
}
.ont-prose h2 {
  font-family: 'Fraunces','Cairo',serif;
  font-weight: 700;
  font-size: 1.4rem;
  margin: 2rem 0 .7rem;
  color: var(--ont-violet);
}
.ont-prose h3 {
  font-family: 'Fraunces','Cairo',serif;
  font-weight: 600;
  font-size: 1.15rem;
  margin: 1.6rem 0 .5rem;
  color: var(--ont-emerald);
}
.ont-prose p {
  font-size: 1.02rem;
  line-height: 1.8;
  margin: 0 0 1.15rem;
  color: var(--ont-ink-soft);
}
.ont-prose ul, .ont-prose ol {
  padding-inline-start: 1.4rem;
  margin: 0 0 1.2rem;
}
.ont-prose li { margin: .35rem 0; line-height: 1.7; }
.ont-prose blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.2rem;
  border-inline-start: 3px solid var(--ont-gold);
  background: rgba(201,161,74,.08);
  border-radius: 0 var(--ont-radius) var(--ont-radius) 0;
  font-style: italic;
  color: var(--ont-ink-soft);
}
html[dir="rtl"] .ont-prose blockquote { border-radius: var(--ont-radius) 0 0 var(--ont-radius); }
.ont-prose a { color: var(--ont-violet); border-bottom: 1px solid rgba(91,43,201,.3); }
.ont-prose a:hover { color: var(--ont-gold); border-bottom-color: var(--ont-gold); }
.ont-prose code {
  font-family: 'JetBrains Mono','Menlo',monospace;
  background: rgba(13,10,31,.06);
  padding: .12rem .35rem;
  border-radius: 4px;
  font-size: .9em;
}

.ont-back { margin-top: 2rem; }
.ont-back a {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .9rem; font-weight: 500;
  color: var(--ont-violet);
}

.ont-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  display: grid;
  gap: .75rem;
}
.ont-list > li {
  padding: 1rem 1.2rem;
  background: rgba(255,255,255,.8);
  border: 1px solid var(--ont-line);
  border-radius: var(--ont-radius);
  transition: border-color .2s ease, transform .2s ease;
}
.ont-list > li:hover {
  border-color: var(--ont-gold);
  transform: translateX(2px);
}
html[dir="rtl"] .ont-list > li:hover { transform: translateX(-2px); }

/* ===========================================================
   8.  Glass, gradient text, cards
   =========================================================== */
.ont-glass {
  background: rgba(255,255,255,.65);
  border: 1px solid rgba(13,10,31,.08);
  backdrop-filter: blur(10px) saturate(160%);
}
.ont-gradient-text {
  background: linear-gradient(120deg, var(--ont-gold) 0%, var(--ont-violet) 50%, var(--ont-azure) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.ont-card {
  border-radius: var(--ont-radius-lg);
  background: rgba(255,255,255,.85);
  border: 1px solid var(--ont-line);
  padding: 1.5rem;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.ont-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--ont-shadow-md);
  border-color: var(--ont-gold);
}

/* ===========================================================
   9.  Footer
   =========================================================== */
.ont-footer {
  border-top: 1px solid var(--ont-line);
  padding: 2.5rem 0;
  background: var(--ont-paper);
  margin-top: 3rem;
}
.ont-footer small {
  display: block;
  text-align: center;
  font-size: .85rem;
  color: var(--ont-ink-soft);
  opacity: .85;
}

/* ===========================================================
   10.  Reveal-on-scroll
   =========================================================== */
[data-rv] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .8s ease, transform .8s ease;
}
[data-rv].is-in { opacity: 1; transform: translateY(0); }
[data-rv-delay="1"] { transition-delay: .12s; }
[data-rv-delay="2"] { transition-delay: .24s; }
[data-rv-delay="3"] { transition-delay: .36s; }
[data-rv-delay="4"] { transition-delay: .48s; }

/* ===========================================================
   11.  Loader (controlled by boot.js)
   =========================================================== */
#ont-loader {
  position: fixed; inset: 0; z-index: 9999;
  display: grid; place-items: center;
  background: radial-gradient(ellipse at center, #1a1240 0%, #0d0a1f 70%);
  color: #f5efe2;
  transition: opacity .55s ease;
}
#ont-loader.is-hidden { opacity: 0; pointer-events: none; }
.ont-loader-stage {
  width: min(260px, 70vw);
  aspect-ratio: 1;
  position: relative;
}
.ont-loader-orbit {
  position: absolute; inset: 0;
  border-radius: 9999px;
  border: 1px solid rgba(233,213,155,.25);
  animation: ont-orbit-spin 8s linear infinite;
}
.ont-loader-orbit.is-2 {
  inset: 12%;
  animation-duration: 5s;
  animation-direction: reverse;
  border-color: rgba(91,43,201,.35);
}
.ont-loader-orbit.is-3 {
  inset: 26%;
  animation-duration: 3.2s;
  border-color: rgba(29,93,191,.4);
}
.ont-loader-core {
  position: absolute; inset: 38%;
  border-radius: 9999px;
  background: radial-gradient(circle at 30% 30%, var(--ont-gold-soft), var(--ont-gold) 60%, #8a6a25 100%);
  box-shadow: 0 0 40px rgba(201,161,74,.55), inset 0 0 18px rgba(255,255,255,.35);
  animation: ont-pulse 2.4s ease-in-out infinite;
}
.ont-loader-orbit::after {
  content: "";
  position: absolute;
  top: -4px; left: 50%;
  width: 8px; height: 8px;
  border-radius: 9999px;
  background: var(--ont-gold-soft);
  box-shadow: 0 0 12px var(--ont-gold);
  transform: translateX(-50%);
}
.ont-loader-orbit.is-2::after { background: #b39bf2; box-shadow: 0 0 12px var(--ont-violet); }
.ont-loader-orbit.is-3::after { background: #9ec7ff; box-shadow: 0 0 12px var(--ont-azure); }
.ont-loader-label {
  position: absolute;
  left: 50%; bottom: -2.5rem;
  transform: translateX(-50%);
  font-family: 'Fraunces','Cairo',serif;
  font-weight: 700;
  letter-spacing: .12em;
  font-size: .8rem;
  text-transform: uppercase;
  opacity: .75;
  white-space: nowrap;
}
@keyframes ont-orbit-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes ont-pulse { 0%,100% { opacity: .55; transform: scale(.97); } 50% { opacity: 1; transform: scale(1.03); } }
@keyframes ont-spin  { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* Hide content while booting */
html.ont-booting body > *:not(#ont-loader) { visibility: hidden !important; }
html.ont-booting { overflow: hidden; }
html.ont-booted  body > *:not(#ont-loader) { visibility: visible; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===========================================================
   12.  RTL helpers
   =========================================================== */
html[dir="rtl"] .ont-flip-rtl { transform: scaleX(-1); }
html[dir="rtl"] .ont-hero h1 .ont-em { padding: 0 .1em; }
html[dir="rtl"] .ont-back a::before { content: ""; }

/* ===========================================================
   13.  Dark mode (opt-in via html.dark)
   =========================================================== */
html.dark { background: var(--ont-ink); color: #f5efe2; }
html.dark body { background: var(--ont-ink); color: #f5efe2; }
html.dark .ont-nav {
  background: rgba(13,10,31,.85);
  border-bottom-color: var(--ont-line-dark);
}
html.dark .ont-brand { color: #f5efe2; }
html.dark .ont-links a { color: rgba(245,239,226,.75); }
html.dark .ont-lang select { background: rgba(255,255,255,.06); color: #f5efe2; border-color: rgba(255,255,255,.15); }
html.dark .ont-stages li,
html.dark .ont-pillars li,
html.dark .ont-list > li,
html.dark .ont-card { background: rgba(255,255,255,.04); border-color: var(--ont-line-dark); }
html.dark .ont-footer { background: transparent; border-top-color: var(--ont-line-dark); }