/* ===== ArtVRLab — design tokens ===== */
:root {
  --bg: #06060a;
  --bg-soft: #0b0b13;
  --surface: #101019;
  --surface-2: #14141f;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  --text: #f4f3f8;
  --muted: #a6a4b8;
  --faint: #6f6d82;

  --violet: #8b6cff;
  --cyan: #2ee6d6;
  --accent: #8b6cff;
  --grad: linear-gradient(100deg, #8b6cff 0%, #6f8cff 38%, #2ee6d6 100%);

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 34px;

  --space-section: clamp(5rem, 3rem + 8vw, 10rem);
  --container: 1180px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.6s;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

/* Armenian uses Noto Sans Armenian (Space Grotesk / Inter lack Armenian glyphs) */
html[lang="hy"] {
  --font-body: "Noto Sans Armenian", "Inter", system-ui, sans-serif;
  --font-display: "Noto Sans Armenian", "Space Grotesk", system-ui, sans-serif;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(139, 108, 255, 0.35); color: #fff; }

a { color: inherit; text-decoration: none; }
img, svg { display: block; }

/* ===== background canvas + grain ===== */
#bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}
.grain {
  position: fixed;
  inset: -50%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 8s steps(6) infinite;
}
@keyframes grain {
  0%,100% { transform: translate(0,0); }
  20% { transform: translate(-4%, 3%); }
  40% { transform: translate(3%, -4%); }
  60% { transform: translate(-3%, -2%); }
  80% { transform: translate(2%, 4%); }
}

main, .nav, .footer { position: relative; z-index: 2; }

/* ===== layout helpers ===== */
.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-section) 28px;
}
.section-head { max-width: 760px; margin-bottom: clamp(2.5rem, 4vw, 4rem); }
.kicker {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 1.1rem;
}
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 1rem + 4vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.96rem;
  padding: 0.85rem 1.5rem;
  border-radius: 100px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    background var(--dur) var(--ease), border-color var(--dur) var(--ease);
  will-change: transform;
}
.btn .arrow { transition: transform 0.4s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-primary {
  background: var(--grad);
  color: #07070d;
  font-weight: 600;
  box-shadow: 0 8px 30px -10px rgba(139, 108, 255, 0.7);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 44px -12px rgba(46, 230, 214, 0.6); }
.btn-line { border-color: var(--line-strong); color: var(--text); background: rgba(255,255,255,0.02); }
.btn-line:hover { border-color: var(--violet); transform: translateY(-2px); background: rgba(139,108,255,0.08); }
.btn-ghost { border-color: var(--line); color: var(--text); padding: 0.6rem 1.15rem; font-size: 0.9rem; }
.btn-ghost:hover { border-color: var(--violet); background: rgba(139,108,255,0.08); }

/* ===== nav ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 1.1rem clamp(20px, 4vw, 48px);
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease), border-color 0.4s var(--ease), padding 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(8, 8, 14, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--line);
  padding-top: 0.8rem; padding-bottom: 0.8rem;
}
.brand { display: flex; align-items: center; gap: 0.6rem; margin-right: auto; }
.brand-mark { filter: drop-shadow(0 4px 14px rgba(139,108,255,0.45)); }
.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.22rem;
  letter-spacing: -0.01em;
}
.brand-accent { color: var(--violet); }
.nav-links { display: flex; gap: 1.9rem; }
.nav-links a {
  font-size: 0.94rem;
  color: var(--muted);
  position: relative;
  transition: color 0.3s var(--ease);
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 0; height: 1.5px; background: var(--grad);
  transition: width 0.35s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-toggle { display: none; }

/* language switcher */
.lang {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(255,255,255,0.03);
}
.lang button {
  font-family: var(--font-display);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--muted);
  background: none;
  border: 0;
  padding: 0.34rem 0.7rem;
  border-radius: 100px;
  cursor: pointer;
  transition: color 0.3s var(--ease), background 0.3s var(--ease);
}
.lang button:hover { color: var(--text); }
.lang button.active {
  color: #07070d;
  background: var(--grad);
  font-weight: 600;
}

/* ===== hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 8rem 24px 4rem;
  position: relative;
}
.hero-inner { max-width: 920px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding: 0.45rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(255,255,255,0.02);
  margin-bottom: 1.8rem;
}
.eyebrow .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(46,230,214,0.6);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(46,230,214,0.55); }
  70% { box-shadow: 0 0 0 9px rgba(46,230,214,0); }
  100% { box-shadow: 0 0 0 0 rgba(46,230,214,0); }
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.6rem, 1rem + 8vw, 6.4rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin-bottom: 1.6rem;
}
.hero-sub {
  font-size: clamp(1.05rem, 0.95rem + 0.6vw, 1.32rem);
  color: var(--muted);
  max-width: 660px;
  margin: 0 auto 2.4rem;
}
.hero-cta { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: clamp(1.5rem, 4vw, 4rem);
  justify-content: center;
  margin-top: 4rem;
  flex-wrap: wrap;
}
.hero-stats div { display: flex; flex-direction: column; gap: 0.2rem; }
.hero-stats strong {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 1rem + 2.5vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-stats span { font-size: 0.84rem; color: var(--faint); letter-spacing: 0.03em; }

.scroll-hint {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  font-family: var(--font-display); font-size: 0.7rem; letter-spacing: 0.25em;
  text-transform: uppercase; color: var(--faint);
}
.scroll-hint span {
  width: 1px; height: 38px;
  background: linear-gradient(var(--violet), transparent);
  animation: scrollLine 2s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ===== platforms strip ===== */
.platforms {
  max-width: var(--container);
  margin: 0 auto;
  padding: 2rem 28px 1rem;
  text-align: center;
}
.strip-label {
  font-family: var(--font-display);
  font-size: 0.8rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--faint); margin-bottom: 2rem;
}
.logo-row {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: clamp(1.6rem, 4vw, 3.4rem);
}
.logo-row .logo {
  height: 30px; width: auto; color: var(--muted);
  opacity: 0.62;
  transition: opacity 0.4s var(--ease), color 0.4s var(--ease), transform 0.4s var(--ease);
}
.logo-row .logo:hover { opacity: 1; color: var(--text); transform: translateY(-3px); }
.logo-row .logo svg { height: 100%; width: auto; }

/* ===== services cards ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  position: relative;
  padding: 2.2rem 1.9rem 2rem;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.035), rgba(255,255,255,0.012));
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.card::before {
  content: attr(data-i);
  position: absolute; top: 1.4rem; right: 1.5rem;
  font-family: var(--font-display); font-size: 0.8rem; letter-spacing: 0.1em;
  color: var(--faint); opacity: 0.5;
}
.card::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(139,108,255,0.14), transparent 60%);
  opacity: 0; transition: opacity 0.5s var(--ease); pointer-events: none;
}
.card:hover { transform: translateY(-5px); border-color: var(--line-strong); }
.card:hover::after { opacity: 1; }
.card-feature {
  background: linear-gradient(180deg, rgba(139,108,255,0.1), rgba(46,230,214,0.04));
  border-color: rgba(139,108,255,0.28);
}
.card-ico {
  width: 52px; height: 52px; display: grid; place-items: center;
  border-radius: 14px; margin-bottom: 1.4rem;
  background: rgba(139,108,255,0.12); color: var(--cyan);
  border: 1px solid rgba(139,108,255,0.22);
}
.card h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.32rem; margin-bottom: 0.6rem; letter-spacing: -0.01em; }
.card p { color: var(--muted); font-size: 0.96rem; margin-bottom: 1.3rem; }
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tags li {
  font-family: var(--font-display); font-size: 0.74rem; letter-spacing: 0.02em;
  padding: 0.28rem 0.7rem; border-radius: 100px;
  border: 1px solid var(--line); color: var(--faint);
}

/* ===== process ===== */
.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  counter-reset: step;
}
.steps li {
  padding: 2rem 1.6rem;
  border-top: 2px solid var(--line);
  position: relative;
  transition: border-color 0.5s var(--ease);
}
.steps li:hover { border-top-color: var(--violet); }
.step-n {
  font-family: var(--font-display); font-size: 0.9rem; font-weight: 600;
  color: var(--violet); letter-spacing: 0.1em;
}
.steps h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.3rem; margin: 1rem 0 0.5rem; }
.steps p { color: var(--muted); font-size: 0.93rem; }

/* ===== bento ===== */
.bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(150px, auto);
  gap: 16px;
}
.bento-cell {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 2rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.035), rgba(255,255,255,0.01));
  display: flex; flex-direction: column; justify-content: center;
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.bento-cell:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.bento-cell.big { grid-column: span 2; grid-row: span 2; justify-content: flex-end; }
.bento-cell.wide { grid-column: span 2; }
.bento-cell h3 { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.3rem, 1rem + 1vw, 1.9rem); margin-bottom: 0.7rem; letter-spacing: -0.01em; }
.bento-cell p { color: var(--muted); font-size: 0.96rem; }
.bento-num {
  font-family: var(--font-display); font-size: clamp(2.4rem, 2rem + 2vw, 3.4rem); font-weight: 700;
  line-height: 1; letter-spacing: -0.02em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 0.6rem;
}
.bento-glow {
  position: absolute; width: 320px; height: 320px; right: -60px; top: -60px;
  background: radial-gradient(circle, rgba(139,108,255,0.22), transparent 65%);
  filter: blur(10px); pointer-events: none;
}

/* ===== cta ===== */
.cta { padding-top: 2rem; }
.cta-card {
  position: relative;
  text-align: center;
  padding: clamp(3rem, 5vw, 5.5rem) 2rem;
  border: 1px solid rgba(139,108,255,0.25);
  border-radius: var(--r-xl);
  background: linear-gradient(180deg, rgba(139,108,255,0.08), rgba(13,13,20,0.4));
  overflow: hidden;
}
.cta-card h2 { font-family: var(--font-display); font-weight: 600; font-size: clamp(2rem, 1rem + 4vw, 3.4rem); line-height: 1.04; letter-spacing: -0.02em; margin-bottom: 1rem; }
.cta-card > p { color: var(--muted); max-width: 480px; margin: 0 auto 2rem; }
.cta-actions { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; }
.cta-glow {
  position: absolute; width: 560px; height: 560px; left: 50%; top: -40%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(46,230,214,0.18), transparent 60%);
  pointer-events: none;
}

/* ===== footer ===== */
.footer {
  border-top: 1px solid var(--line);
  max-width: var(--container);
  margin: 0 auto;
  padding: 4rem 28px 2.5rem;
}
.footer-top { display: flex; justify-content: space-between; gap: 3rem; flex-wrap: wrap; margin-bottom: 3rem; }
.footer-brand .brand-text { font-size: 1.4rem; }
.footer-brand p { color: var(--muted); max-width: 280px; margin-top: 0.8rem; font-size: 0.94rem; }
.footer-cols { display: flex; gap: 4rem; }
.footer-cols h4 { font-family: var(--font-display); font-size: 0.82rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); margin-bottom: 1rem; }
.footer-cols a { display: block; color: var(--muted); font-size: 0.94rem; margin-bottom: 0.6rem; transition: color 0.3s var(--ease); }
.footer-cols a:hover { color: var(--text); }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  padding-top: 2rem; border-top: 1px solid var(--line);
  font-size: 0.85rem; color: var(--faint);
  font-family: var(--font-display); letter-spacing: 0.02em;
}

/* ===== reveal animation ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ===== responsive ===== */
@media (max-width: 940px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento-cell.big { grid-column: span 2; grid-row: auto; }
  .bento-cell.wide { grid-column: span 2; }
}
@media (max-width: 720px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle {
    display: flex; flex-direction: column; gap: 5px; margin-left: auto;
    background: none; border: 0; cursor: pointer; padding: 6px;
  }
  .nav-toggle span { width: 24px; height: 2px; background: var(--text); transition: transform 0.3s var(--ease), opacity 0.3s; }
  .nav.open .nav-toggle span:first-child { transform: translateY(7px) rotate(45deg); }
  .nav.open .nav-toggle span:last-child { transform: translateY(-7px) rotate(-45deg); }
  .nav.open .nav-links {
    display: flex; flex-direction: column; gap: 1.4rem;
    position: absolute; top: 100%; left: 0; right: 0;
    padding: 1.6rem 24px 2rem;
    background: rgba(8,8,14,0.96); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
  }
  .nav.open .nav-cta { display: inline-flex; }
  .cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 2rem; }
  .footer-cols { gap: 2.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}