/* anim-20260727c dual reveal: .on + view() + IO */
/* PiGPT landing — model-centric, Vazirmatn self-hosted, RTL */
:root {
  --bg: #07131a;
  --bg-elev: #0d1f29;
  --bg-soft: #102833;
  --ink: #e8f2f4;
  --muted: #9db4bc;
  --brand: #14b8a6;
  --brand-deep: #0f766e;
  --brand-soft: rgba(20, 184, 166, 0.14);
  --line: rgba(232, 242, 244, 0.1);
  --radius: 18px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --font: "Vazirmatn", "Tahoma", "Segoe UI", sans-serif;
  --max: 1120px;
}

@font-face {
  font-family: "Vazirmatn";
  src: url("/home/assets/fonts/Vazirmatn-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Vazirmatn";
  src: url("/home/assets/fonts/Vazirmatn-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Vazirmatn";
  src: url("/home/assets/fonts/Vazirmatn-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Vazirmatn";
  src: url("/home/assets/fonts/Vazirmatn-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

/* Product owner: animations ALWAYS on — do not disable via prefers-reduced-motion on this landing. */

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { color: #5eead4; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; inset-inline-start: 1rem; top: -100px;
  background: var(--brand); color: #042f2e; padding: 0.6rem 1rem; border-radius: 999px; z-index: 100;
  text-decoration: none; font-weight: 700;
}
.skip-link:focus { top: 1rem; }

.shell {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}
.shell.narrow { width: min(760px, calc(100% - 2rem)); }

.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(7, 19, 26, 0.78);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--line); background: rgba(7, 19, 26, 0.92); }

.header-inner {
  display: flex; align-items: center; gap: 1rem;
  min-height: 72px;
}
.brand {
  display: inline-flex; align-items: center; gap: 0.75rem;
  color: inherit; text-decoration: none; margin-inline-end: auto;
}
.brand img { border-radius: 10px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 1.05rem; letter-spacing: 0.02em; font-weight: 700; }
.brand-text small { color: var(--muted); font-size: 0.75rem; }

.nav { display: none; gap: 1.1rem; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav a:hover { color: var(--ink); }

.header-actions { display: flex; align-items: center; gap: 0.55rem; }
.nav-toggle {
  width: 42px; height: 42px; border-radius: 12px;
  border: 1px solid var(--line); background: transparent; color: var(--ink);
  display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px;
  cursor: pointer;
}
.nav-toggle span:not(.sr-only) {
  display: block; width: 16px; height: 2px; background: currentColor; border-radius: 2px;
}
.mobile-nav {
  display: grid; gap: 0.75rem; padding: 0.5rem 1rem 1.25rem;
  border-top: 1px solid var(--line);
}
.mobile-nav a { color: var(--ink); text-decoration: none; }

@media (min-width: 920px) {
  .nav { display: flex; }
  .nav-toggle, .mobile-nav { display: none !important; }
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.4rem; border-radius: 999px; padding: 0.65rem 1.15rem;
  font: inherit; font-weight: 700; border: 1px solid transparent;
  text-decoration: none; cursor: pointer; transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible { outline: 2px solid #5eead4; outline-offset: 3px; }
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-deep)); color: #042f2e; }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-lg { padding: 0.85rem 1.4rem; }

.hero {
  position: relative; overflow: hidden;
  padding: 3.25rem 0 3.75rem;
  min-height: min(90vh, 820px);
  display: flex; align-items: center;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 80% 20%, rgba(20,184,166,0.22), transparent 55%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(15,118,110,0.18), transparent 50%),
    linear-gradient(180deg, #07131a 0%, #0a1a22 55%, #07131a 100%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid; gap: 2.5rem; align-items: center;
}
@media (min-width: 960px) {
  .hero-grid { grid-template-columns: 1.08fr 0.92fr; gap: 3rem; }
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.45rem;
  color: #5eead4; font-weight: 700; letter-spacing: 0.04em;
  font-size: 0.82rem; margin: 0 0 1rem;
}
.hero h1 {
  margin: 0 0 1rem; font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.28; letter-spacing: -0.02em; font-weight: 700;
}
.lede {
  margin: 0 0 1.5rem; color: var(--muted); font-size: 1.08rem; max-width: 38rem;
}
.cta-row {
  display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.35rem;
}
.section-cta { margin-top: 2rem; margin-bottom: 0; }
.section-cta.center { justify-content: center; }

.hero-logos {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.logo-chip {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem; font-weight: 600;
}
.logo-chip img {
  width: 18px; height: 18px; object-fit: contain;
  filter: brightness(1.05);
}

.hero-visual {
  margin: 0; border-radius: calc(var(--radius) + 6px); overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--line);
}
.hero-visual img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }

.section { padding: 4.25rem 0; }
.section-alt {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent 30%, rgba(255,255,255,0.02));
}
.section-head { margin-bottom: 2rem; max-width: 44rem; }
.section-head h2, .section h2 {
  margin: 0 0 0.75rem; font-size: clamp(1.55rem, 3vw, 2.1rem);
  line-height: 1.35; font-weight: 700;
}
.section-head p, .narrow > p { color: var(--muted); margin: 0; font-size: 1.02rem; }

.family-grid {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.family-card {
  display: flex; flex-direction: column; gap: 0.85rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.3rem;
  transition: border-color .2s ease, transform .2s ease;
}
.family-card:hover {
  border-color: rgba(20,184,166,0.4);
  transform: translateY(-2px);
}
.family-card > header {
  display: flex; align-items: center; gap: 0.85rem;
}
.family-card > header img {
  width: 40px; height: 40px; object-fit: contain;
  padding: 0.35rem;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--line);
}
.family-card > header h3 { margin: 0; font-size: 1.08rem; font-weight: 700; }
.family-card > header p { margin: 0.15rem 0 0; color: var(--muted); font-size: 0.82rem; }
.family-blurb { margin: 0; color: var(--muted); font-size: 0.94rem; flex: 1; }
.model-tags {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0.35rem;
}
.model-tags li {
  font-size: 0.78rem; font-weight: 600;
  color: var(--ink);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
}
.family-cta { align-self: flex-start; margin-top: 0.25rem; }

.catalog {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.catalog-block {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
}
.catalog-block h3 {
  margin: 0 0 0.75rem;
  display: flex; align-items: center; gap: 0.55rem;
  font-size: 1rem; font-weight: 700;
}
.catalog-block h3 img {
  width: 24px; height: 24px; object-fit: contain;
}
.catalog-block ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0.35rem;
}
.catalog-block li {
  font-size: 0.8rem;
  color: var(--ink);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
}

.feature-grid, .audience-grid {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.feature-grid article, .studio-cards article {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.3rem;
  transition: border-color .2s ease, transform .2s ease;
}
.feature-grid article:hover, .studio-cards article:hover {
  border-color: rgba(20,184,166,0.35);
  transform: translateY(-2px);
}
.feature-grid h3, .studio-cards h3 {
  margin: 0 0 0.45rem; font-size: 1.05rem; font-weight: 700;
}
.feature-grid p, .studio-cards p { margin: 0; color: var(--muted); font-size: 0.96rem; }

.studios-layout {
  display: grid; gap: 1.5rem; align-items: stretch;
}
@media (min-width: 900px) {
  .studios-layout { grid-template-columns: 1.05fr 1fr; gap: 2rem; }
}
.studios-visual {
  margin: 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow);
}
.studios-visual img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.studio-cards { display: grid; gap: 0.85rem; }

.cta-band {
  background:
    radial-gradient(ellipse 60% 80% at 100% 0%, rgba(20,184,166,0.18), transparent 50%),
    var(--bg-soft);
  border-block: 1px solid var(--line);
}
.final-cta {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
}
.final-cta h2 { margin: 0 0 0.75rem; }
.final-cta p { color: var(--muted); margin: 0 0 1.5rem; }
.final-cta .cta-row { justify-content: center; margin-bottom: 0; animation: none; }

.site-footer {
  padding: 2rem 0 2.5rem; border-top: 1px solid var(--line); color: var(--muted);
}
.footer-inner {
  display: grid; gap: 1rem; align-items: center;
}
@media (min-width: 760px) {
  .footer-inner { grid-template-columns: 1.2fr 1fr auto; }
}
.brand-footer { margin: 0; }
.brand-footer span { display: block; font-size: 0.85rem; color: var(--muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 1rem; }
.site-footer nav a { color: var(--muted); text-decoration: none; }
.site-footer nav a:hover { color: var(--ink); }
.copy { margin: 0; font-size: 0.88rem; }

/* —— Scroll reveal (enter / exit) — OBVIOUS —— */
.reveal {
  opacity: 0;
  transform: translate3d(0, 48px, 0);
  transition:
    opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: 0ms;
  will-change: opacity, transform;
}
.reveal.is-visible,
.reveal.on {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}
/* Exit state slightly milder so re-entry is still clear */
.reveal.was-shown:not(.is-visible) {
  opacity: 0;
  transform: translate3d(0, 24px, 0);
}
.reveal-soft {
  transform: translate3d(0, 40px, 0);
}
.reveal-soft.is-visible,
.reveal-soft.on {
  transform: translate3d(0, 0, 0);
}
.reveal-soft.was-shown:not(.is-visible) {
  transform: translate3d(0, 20px, 0);
}

/* Hero load entrance — visible without scrolling */
@keyframes pigpt-hero-in {
  from {
    opacity: 0;
    transform: translate3d(0, 48px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}
.hero-copy.hero-enter,
.hero-visual.hero-enter {
  opacity: 0;
  transform: translate3d(0, 48px, 0);
  animation: pigpt-hero-in 1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  will-change: opacity, transform;
}
.hero-visual.hero-enter {
  animation-delay: 120ms;
}
.hero-copy.reveal.is-visible,
.hero-visual.reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  animation: none;
}

/* Hover only while visible */
.family-card.reveal.is-visible:hover,
.feature-grid article.reveal.is-visible:hover,
.studio-cards article.reveal.is-visible:hover {
  transform: translate3d(0, -2px, 0);
}

/* Stagger children 80ms */
.family-grid .reveal.is-visible:nth-child(1),
.catalog .reveal.is-visible:nth-child(1),
.feature-grid .reveal.is-visible:nth-child(1),
.studio-cards .reveal.is-visible:nth-child(1) { transition-delay: 0ms; }
.family-grid .reveal.is-visible:nth-child(2),
.catalog .reveal.is-visible:nth-child(2),
.feature-grid .reveal.is-visible:nth-child(2),
.studio-cards .reveal.is-visible:nth-child(2) { transition-delay: 80ms; }
.family-grid .reveal.is-visible:nth-child(3),
.catalog .reveal.is-visible:nth-child(3),
.feature-grid .reveal.is-visible:nth-child(3),
.studio-cards .reveal.is-visible:nth-child(3) { transition-delay: 160ms; }
.family-grid .reveal.is-visible:nth-child(4),
.catalog .reveal.is-visible:nth-child(4),
.feature-grid .reveal.is-visible:nth-child(4),
.studio-cards .reveal.is-visible:nth-child(4) { transition-delay: 240ms; }
.family-grid .reveal.is-visible:nth-child(5),
.catalog .reveal.is-visible:nth-child(5),
.feature-grid .reveal.is-visible:nth-child(5),
.studio-cards .reveal.is-visible:nth-child(5) { transition-delay: 320ms; }
.family-grid .reveal.is-visible:nth-child(6),
.catalog .reveal.is-visible:nth-child(6),
.feature-grid .reveal.is-visible:nth-child(6),
.studio-cards .reveal.is-visible:nth-child(6) { transition-delay: 400ms; }
.family-grid .reveal.is-visible:nth-child(7),
.catalog .reveal.is-visible:nth-child(7),
.feature-grid .reveal.is-visible:nth-child(7) { transition-delay: 480ms; }
.family-grid .reveal.is-visible:nth-child(8),
.catalog .reveal.is-visible:nth-child(8),
.feature-grid .reveal.is-visible:nth-child(8) { transition-delay: 560ms; }
.family-grid .reveal.is-visible:nth-child(n+9),
.catalog .reveal.is-visible:nth-child(n+9),
.feature-grid .reveal.is-visible:nth-child(n+9) { transition-delay: 640ms; }

@media (max-width: 640px) {
  .reveal { transform: translate3d(0, 36px, 0); }
  .reveal-soft { transform: translate3d(0, 32px, 0); }
  .reveal.was-shown:not(.is-visible) { transform: translate3d(0, 20px, 0); }
  .family-grid .reveal.is-visible:nth-child(n),
  .catalog .reveal.is-visible:nth-child(n),
  .feature-grid .reveal.is-visible:nth-child(n),
  .studio-cards .reveal.is-visible:nth-child(n) { transition-delay: 0ms; }
  .family-grid .reveal.is-visible:nth-child(2),
  .catalog .reveal.is-visible:nth-child(2),
  .feature-grid .reveal.is-visible:nth-child(2),
  .studio-cards .reveal.is-visible:nth-child(2) { transition-delay: 60ms; }
  .family-grid .reveal.is-visible:nth-child(3),
  .catalog .reveal.is-visible:nth-child(3),
  .feature-grid .reveal.is-visible:nth-child(3),
  .studio-cards .reveal.is-visible:nth-child(3) { transition-delay: 100ms; }
}


/* —— CSS scroll-driven fallback ONLY when JS disabled — anim-20260727c —— */
@supports (animation-timeline: view()) {
  @keyframes pigpt-scroll-reveal {
    from { opacity: 0; transform: translate3d(0, 48px, 0); }
    to { opacity: 1; transform: translate3d(0, 0, 0); }
  }
  html.no-js .reveal {
    animation: pigpt-scroll-reveal linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 35%;
  }
}

/* JS path: class toggles must win — never leave opacity stuck at 1 */
html.js .reveal:not(.on):not(.is-visible) {
  opacity: 0;
  transform: translate3d(0, 48px, 0);
  animation: none !important;
}
html.js .reveal.on,
html.js .reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}