/* ============================================================
   CERNEAI — Apple-style redesign
   ============================================================ */

:root {
  --bg: #FAFAF7;
  --bg-soft: #F1F0EB;
  --ink: #0A0A0A;
  --ink-soft: rgba(10,10,10,0.62);
  --ink-faint: rgba(10,10,10,0.42);
  --hair: rgba(10,10,10,0.10);
  --card: rgba(255,255,255,0.66);
  --glass: rgba(250,250,247,0.72);
  --glass-strong: rgba(250,250,247,0.86);

  /* Iris palette (default) */
  --a1: #8B7CFF;   /* iris */
  --a2: #56B6F2;   /* aqua */
  --a3: #C8B6FF;   /* lilac */
  --a4: #FF9FB2;   /* blush */

  --radius-sm: 12px;
  --radius: 20px;
  --radius-lg: 32px;
  --radius-xl: 48px;

  --shadow-soft: 0 1px 2px rgba(10,10,10,0.04), 0 8px 28px rgba(10,10,10,0.06);
  --shadow-card: 0 1px 0 rgba(255,255,255,0.7) inset, 0 1px 2px rgba(10,10,10,0.04), 0 24px 60px -20px rgba(10,10,10,0.18);

  --font-display: "Geist", "SF Pro Display", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-body: "Geist", "SF Pro Text", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-serif: "Instrument Serif", "New York", "Iowan Old Style", Georgia, serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

[data-theme="dark"] {
  --bg: #050505;
  --bg-soft: #0E0E10;
  --ink: #F5F5F7;
  --ink-soft: rgba(245,245,247,0.66);
  --ink-faint: rgba(245,245,247,0.42);
  --hair: rgba(245,245,247,0.10);
  --card: rgba(255,255,255,0.04);
  --glass: rgba(8,8,10,0.66);
  --glass-strong: rgba(8,8,10,0.82);
  --shadow-soft: 0 1px 2px rgba(0,0,0,0.4), 0 24px 60px rgba(0,0,0,0.55);
  --shadow-card: 0 1px 0 rgba(255,255,255,0.06) inset, 0 24px 60px -20px rgba(0,0,0,0.6);
}

[data-accent="solar"] {
  --a1: #FFB169;
  --a2: #FF7A8A;
  --a3: #FFD089;
  --a4: #FFA8C8;
}
[data-accent="verde"] {
  --a1: #5BD9A6;
  --a2: #6FE1D2;
  --a3: #A8F0C8;
  --a4: #7FC9FF;
}

/* ---------- reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  font-feature-settings: "ss01", "ss02", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background 0.6s ease, color 0.6s ease;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
a { color: inherit; text-decoration: none; }

/* ---------- layout ---------- */
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 32px; }
.wrap-wide { max-width: 1440px; margin: 0 auto; padding: 0 32px; }

/* ---------- type ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
}
.h-mega {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(56px, 9.5vw, 168px);
  line-height: 0.92;
  letter-spacing: -0.045em;
  margin: 0;
}
.h-display {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(40px, 6.4vw, 112px);
  line-height: 0.94;
  letter-spacing: -0.035em;
  margin: 0;
}
.h-section {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(36px, 5vw, 80px);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0;
}
.h-card {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 2.4vw, 36px);
  line-height: 1.04;
  letter-spacing: -0.022em;
  margin: 0;
}
.serif-it {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.lead {
  font-size: clamp(18px, 1.45vw, 22px);
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0;
}
.mono { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em; }

.grad-text {
  background: linear-gradient(100deg, var(--a1) 0%, var(--a2) 38%, var(--a4) 70%, var(--a3) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: 64px;
  display: flex; align-items: center;
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  background: var(--glass);
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, border-color 0.35s ease;
}
.nav.scrolled { border-bottom-color: var(--hair); }
.nav .wrap-wide {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-links {
  display: flex; align-items: center; gap: 36px;
  font-size: 13px; color: var(--ink-soft); font-weight: 500;
}
.nav-links a { transition: color 0.2s ease; }
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 999px;
  background: var(--ink); color: var(--bg);
  font-size: 13px; font-weight: 500;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-cta:hover { transform: scale(1.04); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px;
  font-size: 15px; font-weight: 500;
  transition: transform 0.25s cubic-bezier(.2,.8,.2,1), box-shadow 0.25s ease, background 0.25s ease;
  will-change: transform;
}
.btn-primary {
  background: var(--ink); color: var(--bg);
  box-shadow: 0 8px 24px -8px rgba(10,10,10,0.35);
}
.btn-primary:hover { transform: scale(1.04); box-shadow: 0 16px 36px -12px rgba(10,10,10,0.45); }
.btn-ghost {
  border: 1px solid var(--hair); color: var(--ink);
  background: transparent;
}
.btn-ghost:hover { background: var(--card); }
.btn-arrow { font-size: 18px; line-height: 1; transition: transform 0.3s ease; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 120px 0 80px;
  display: grid; place-items: center;
  overflow: hidden;
  isolation: isolate;
}
.hero-inner {
  position: relative; z-index: 2;
  text-align: center;
  padding: 0 24px;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(64px, 11vw, 200px);
  line-height: 0.88;
  letter-spacing: -0.05em;
  margin: 24px 0 0;
}
.hero h1 .line { display: block; overflow: hidden; }
.hero h1 .line span { display: inline-block; }
.hero-sub {
  margin: 36px auto 0;
  max-width: 660px;
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.45;
  color: var(--ink-soft);
}
.hero-ctas {
  margin-top: 44px;
  display: inline-flex; gap: 12px;
  flex-wrap: wrap; justify-content: center;
}

/* orb / aurora */
.orb {
  position: absolute; z-index: 1;
  inset: 0;
  display: grid; place-items: center;
  pointer-events: none;
}
.orb-core {
  width: clamp(420px, 60vw, 820px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, var(--a3) 0%, transparent 45%),
    radial-gradient(circle at 70% 35%, var(--a2) 0%, transparent 50%),
    radial-gradient(circle at 55% 80%, var(--a4) 0%, transparent 55%),
    radial-gradient(circle at 30% 70%, var(--a1) 0%, transparent 55%),
    conic-gradient(from 90deg at 50% 50%, var(--a1), var(--a2), var(--a3), var(--a4), var(--a1));
  filter: blur(40px) saturate(140%);
  opacity: 0.78;
  animation: orbSpin 28s linear infinite, orbFloat 9s ease-in-out infinite;
  transform-origin: center;
}
[data-theme="dark"] .orb-core { opacity: 0.62; filter: blur(50px) saturate(160%); }

.orb-halo {
  position: absolute;
  width: clamp(560px, 80vw, 1100px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, var(--a2) 0%, transparent 55%);
  filter: blur(80px);
  opacity: 0.35;
  animation: orbFloat 11s ease-in-out infinite reverse;
}

@keyframes orbSpin {
  to { transform: rotate(360deg); }
}
@keyframes orbFloat {
  0%, 100% { transform: translate3d(0,0,0) scale(1); }
  50% { transform: translate3d(0,-3%,0) scale(1.04); }
}

/* grid mesh overlay (very subtle) */
.mesh {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(to right, var(--hair) 1px, transparent 1px),
    linear-gradient(to bottom, var(--hair) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 70% 50% at 50% 50%, #000 30%, transparent 75%);
  opacity: 0.45;
  pointer-events: none;
}

.hero-scroll {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em;
  color: var(--ink-faint); text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  z-index: 3;
}
.hero-scroll-line {
  width: 1px; height: 28px;
  background: linear-gradient(to bottom, var(--ink-faint), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine { 0%,100%{opacity:.3;transform:scaleY(.6);} 50%{opacity:1;transform:scaleY(1);} }

/* ---------- typo manifest section ---------- */
.manifest {
  padding: 160px 0;
  position: relative;
}
.manifest-inner {
  max-width: 1080px; margin: 0 auto; padding: 0 32px;
}
.manifest .h-display { max-width: 14ch; }
.manifest .h-display .grad-text { display: inline; }

/* ---------- services ---------- */
.services { padding: 120px 0; }
.services-head {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 40px; margin-bottom: 56px;
  flex-wrap: wrap;
}
.services-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.service-card {
  position: relative;
  padding: 36px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--hair);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow: hidden;
  isolation: isolate;
  min-height: 460px;
  display: flex; flex-direction: column; justify-content: space-between;
  transition: transform 0.5s cubic-bezier(.2,.8,.2,1), border-color 0.4s ease;
}
.service-card:hover { transform: translateY(-4px); border-color: rgba(10,10,10,0.18); }
[data-theme="dark"] .service-card:hover { border-color: rgba(245,245,247,0.18); }

.service-card .num {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint);
}
.service-card h3 {
  font-family: var(--font-display);
  font-size: clamp(28px, 2.6vw, 40px);
  font-weight: 600; letter-spacing: -0.025em; line-height: 1.02;
  margin: 14px 0 18px;
}
.service-card p {
  font-size: 15.5px; line-height: 1.5; color: var(--ink-soft);
  margin: 0 0 28px;
  max-width: 32ch;
}
.service-card .tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: auto;
}
.service-card .tag {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.06em;
  padding: 5px 10px; border-radius: 999px;
  border: 1px solid var(--hair); color: var(--ink-soft);
  text-transform: uppercase;
}
.service-card .visual {
  position: absolute; right: -40px; top: -40px;
  width: 220px; height: 220px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, var(--a3), transparent 60%),
    radial-gradient(circle at 70% 70%, var(--a2), transparent 60%),
    var(--a1);
  filter: blur(8px);
  opacity: 0.7;
  z-index: -1;
  transition: transform 0.7s cubic-bezier(.2,.8,.2,1), opacity 0.4s ease;
}
.service-card:hover .visual { transform: scale(1.15) rotate(8deg); opacity: 0.9; }
.service-card[data-shape="square"] .visual {
  border-radius: 30%;
  background:
    conic-gradient(from 200deg, var(--a4), var(--a1), var(--a2), var(--a4));
}
.service-card[data-shape="ring"] .visual {
  background:
    radial-gradient(circle at 50% 50%, transparent 38%, var(--a2) 42%, var(--a4) 60%, transparent 75%);
}

/* ---------- process (pinned-feel) ---------- */
.process {
  padding: 140px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}
.process-head { text-align: center; margin-bottom: 80px; }
.process-track {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  position: relative;
}
.process-track::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 36px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--hair) 12%, var(--hair) 88%, transparent);
}
.step {
  position: relative;
  padding-top: 64px;
}
.step-dot {
  position: absolute; top: 24px; left: 0;
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--bg-soft);
  border: 1px solid var(--hair);
  display: grid; place-items: center;
}
.step-dot::after {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--ink);
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
.step.is-active .step-dot::after {
  background: var(--a2);
  box-shadow: 0 0 0 6px rgba(86,182,242,0.18);
}
.step .num {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--ink-faint); text-transform: uppercase;
}
.step h4 {
  font-family: var(--font-display);
  font-size: clamp(22px, 1.8vw, 28px);
  font-weight: 600; letter-spacing: -0.02em;
  margin: 10px 0 12px;
}
.step p {
  font-size: 14.5px; line-height: 1.5; color: var(--ink-soft); margin: 0;
}

/* ---------- showcase ---------- */
.showcase { padding: 140px 0; }
.showcase-head { margin-bottom: 56px; max-width: 720px; }
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(380px, auto);
  gap: 20px;
}
.work {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--hair);
  isolation: isolate;
  cursor: pointer;
  transition: transform 0.5s cubic-bezier(.2,.8,.2,1);
}
.work:hover { transform: translateY(-6px); }
.work-fill {
  position: absolute; inset: -10%;
  background-size: 140% 140%;
  background-position: 50% 50%;
  transition: transform 1.2s cubic-bezier(.2,.8,.2,1), filter 0.6s ease;
  animation: workDrift 18s ease-in-out infinite alternate;
  will-change: transform, background-position;
}
.work:hover .work-fill {
  animation-duration: 9s;
  filter: saturate(1.15) brightness(1.05);
  transform: scale(1.04);
}
@keyframes workDrift {
  0%   { background-position: 30% 30%; transform: scale(1.02) rotate(0deg); }
  50%  { background-position: 65% 55%; transform: scale(1.06) rotate(2deg); }
  100% { background-position: 40% 70%; transform: scale(1.03) rotate(-1.5deg); }
}

/* product mark — anchored to upper region, floats slowly */
.work-mark {
  position: absolute;
  top: 100px;
  left: 0;
  right: 0;
  bottom: 100px;
  display: flex; align-items: center; justify-content: center;
  z-index: 2;
  pointer-events: none;
  transition: transform 0.9s cubic-bezier(.2,.8,.2,1);
  animation: markFloat 7s ease-in-out infinite;
}
.work-mark svg,
.work-mark img {
  filter: drop-shadow(0 12px 32px rgba(0,0,0,0.35));
  transition: transform 0.9s cubic-bezier(.2,.8,.2,1);
  max-width: 220px;
  max-height: 80px;
  width: auto;
  height: auto;
}
.work-mark svg { max-width: 160px; max-height: 110px; }
.work:hover .work-mark svg,
.work:hover .work-mark img { transform: scale(1.08); }
.work-mark .wm-name {
  position: absolute;
  bottom: -56px;
  left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  white-space: nowrap;
}
@keyframes markFloat {
  0%,100% { transform: translate3d(0,0,0); }
  50%     { transform: translate3d(0,-10px,0); }
}

/* small floating chip — a hint of UI peeking out */
.work-chip {
  position: absolute;
  z-index: 3;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.16);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255,255,255,0.22);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 8px;
  animation: chipFloat 9s ease-in-out infinite;
}
.work-chip i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--a3);
  box-shadow: 0 0 12px var(--a3);
}
.work-chip[data-pos="tl"] { top: 24px; left: 24px; }
.work-chip[data-pos="tr"] { top: 24px; right: 24px; animation-delay: -3s; }
.work-chip[data-pos="bl"] { bottom: 96px; left: 24px; animation-delay: -5s; }
@keyframes chipFloat {
  0%,100% { transform: translate3d(0,0,0); }
  50%     { transform: translate3d(0,-6px,0); }
}
.work-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.0) 55%);
}
.work-meta {
  position: absolute; left: 28px; right: 28px; bottom: 18px;
  z-index: 4;
  color: #fff;
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px;
}
.work-meta .cat {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; opacity: 0.75;
}
.work-meta h4 {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.5vw, 22px);
  font-weight: 600; letter-spacing: -0.02em; line-height: 1.15;
  margin: 6px 0 0;
}
.work .arrow {
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255,255,255,0.16);
  backdrop-filter: blur(10px);
  display: grid; place-items: center;
  border: 1px solid rgba(255,255,255,0.22);
  flex: 0 0 auto;
}

.work-1, .work-2, .work-3, .work-4, .work-5 {
  grid-column: span 1;
  grid-row: span 1;
}

/* generative gradient fills (placeholders for "imagery") */
.fill-aurora {
  background:
    radial-gradient(60% 70% at 20% 30%, var(--a1) 0%, transparent 60%),
    radial-gradient(70% 60% at 80% 70%, var(--a2) 0%, transparent 60%),
    radial-gradient(50% 50% at 50% 100%, var(--a4) 0%, transparent 60%),
    linear-gradient(135deg, #1a1330 0%, #0a0a18 100%);
}
.fill-dune {
  background:
    radial-gradient(70% 80% at 70% 30%, var(--a3) 0%, transparent 55%),
    radial-gradient(80% 70% at 30% 80%, var(--a4) 0%, transparent 60%),
    linear-gradient(145deg, #2a1a1f 0%, #0d0a0e 100%);
}
.fill-glacier {
  background:
    radial-gradient(60% 60% at 50% 30%, var(--a2) 0%, transparent 55%),
    radial-gradient(60% 60% at 30% 80%, var(--a1) 0%, transparent 55%),
    linear-gradient(160deg, #0c1428 0%, #050810 100%);
}
.fill-ember {
  background:
    radial-gradient(70% 80% at 80% 20%, var(--a4) 0%, transparent 55%),
    radial-gradient(60% 60% at 20% 80%, var(--a3) 0%, transparent 55%),
    linear-gradient(135deg, #1a0e16 0%, #0b0608 100%);
}
.fill-mint {
  background:
    radial-gradient(60% 70% at 30% 30%, var(--a1) 0%, transparent 55%),
    radial-gradient(60% 70% at 70% 80%, var(--a3) 0%, transparent 55%),
    linear-gradient(150deg, #0a1a18 0%, #050a0a 100%);
}

/* film grain */
.fill-noise::after {
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.16 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
  opacity: 0.5;
  pointer-events: none;
}

/* ---------- chat demo ---------- */
.chat-sec {
  padding: 160px 0 140px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.chat-sec::before {
  content: "";
  position: absolute; z-index: -1;
  left: 50%; top: 30%; transform: translate(-50%, -50%);
  width: 100vw; max-width: 1400px; aspect-ratio: 2.4;
  background:
    radial-gradient(50% 60% at 25% 50%, var(--a1) 0%, transparent 55%),
    radial-gradient(50% 60% at 75% 50%, var(--a2) 0%, transparent 55%),
    radial-gradient(40% 60% at 50% 100%, var(--a4) 0%, transparent 55%);
  filter: blur(60px);
  opacity: 0.35;
  animation: orbFloat 13s ease-in-out infinite;
}
.chat-head {
  text-align: center;
  max-width: 760px; margin: 0 auto 64px;
  padding: 0 24px;
}
.chat-head .eyebrow { margin-bottom: 22px; }
.chat-head .lead { margin: 28px auto 0; }

.chat-window {
  max-width: 820px; margin: 0 auto;
  background: var(--glass-strong);
  backdrop-filter: blur(40px) saturate(180%);
  -webkit-backdrop-filter: blur(40px) saturate(180%);
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex; flex-direction: column;
  min-height: 540px;
}
.chat-titlebar {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-faint);
}
.chat-titlebar .agent-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--a2);
  box-shadow: 0 0 0 3px rgba(86,182,242,0.18), 0 0 14px var(--a2);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 3px rgba(86,182,242,0.18), 0 0 14px var(--a2); }
  50%     { box-shadow: 0 0 0 6px rgba(86,182,242,0.08), 0 0 22px var(--a2); }
}
.chat-titlebar .agent-name { color: var(--ink); font-weight: 500; letter-spacing: 0.08em; }
.chat-titlebar .agent-meta { margin-left: auto; }

.chat-clear {
  width: 28px; height: 28px;
  margin-left: 12px;
  border-radius: 999px;
  display: grid; place-items: center;
  border: 1px solid var(--hair);
  color: var(--ink-faint);
  background: transparent;
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.3s ease;
}
.chat-clear:hover { color: var(--ink); border-color: rgba(10,10,10,0.18); }
.chat-clear:active svg { transform: rotate(-180deg); transition: transform 0.4s cubic-bezier(.2,.8,.2,1); }
[data-theme="dark"] .chat-clear:hover { border-color: rgba(245,245,247,0.18); }

/* email captured success card */
.chat-success {
  margin: 12px auto 8px;
  max-width: 92%;
  padding: 16px 18px;
  border-radius: 18px;
  background:
    linear-gradient(135deg, color-mix(in oklab, var(--a1) 22%, transparent), color-mix(in oklab, var(--a2) 22%, transparent));
  border: 1px solid var(--hair);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex; align-items: center; gap: 14px;
  opacity: 0; transform: translateY(8px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.chat-success.in { opacity: 1; transform: none; }
.chat-success .check {
  flex: 0 0 auto;
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--a1), var(--a2));
  display: grid; place-items: center;
  color: #fff;
  box-shadow: 0 8px 20px -6px rgba(0,0,0,0.25);
}
.chat-success .check svg {
  animation: drawCheck 0.6s ease-out 0.2s both;
}
@keyframes drawCheck {
  from { stroke-dashoffset: 24; }
  to   { stroke-dashoffset: 0; }
}
.chat-success .copy { font-size: 14px; line-height: 1.45; color: var(--ink); }
.chat-success .copy strong { font-weight: 600; }
.chat-success .copy small {
  display: block; margin-top: 4px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  color: var(--ink-faint); text-transform: uppercase;
}

.chat-body {
  flex: 1;
  padding: 28px 28px 12px;
  display: flex; flex-direction: column; gap: 18px;
  overflow-y: auto;
  scroll-behavior: smooth;
}
.chat-body::-webkit-scrollbar { width: 6px; }
.chat-body::-webkit-scrollbar-thumb { background: var(--hair); border-radius: 999px; }

.msg {
  display: flex; flex-direction: column; max-width: 78%;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.msg.in { opacity: 1; transform: none; }
.msg.from-user { align-self: flex-end; align-items: flex-end; }
.msg.from-agent { align-self: flex-start; }
.msg .who {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 6px;
  padding: 0 4px;
}
.bubble {
  padding: 14px 18px;
  border-radius: 20px;
  font-size: 15.5px;
  line-height: 1.5;
  letter-spacing: -0.005em;
}
.from-agent .bubble {
  background: var(--card);
  border: 1px solid var(--hair);
  border-top-left-radius: 6px;
  color: var(--ink);
}
.from-user .bubble {
  background:
    linear-gradient(135deg, var(--a1), var(--a2));
  color: #fff;
  border-top-right-radius: 6px;
  box-shadow: 0 8px 24px -8px rgba(86,182,242,0.4);
}
.from-user .bubble .grad-text { -webkit-text-fill-color: #fff; color: #fff; }

/* typing dots */
.typing {
  display: inline-flex; gap: 4px; align-items: center;
  padding: 16px 18px;
}
.typing i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ink-faint);
  animation: typingDot 1.2s ease-in-out infinite;
}
.typing i:nth-child(2) { animation-delay: 0.15s; }
.typing i:nth-child(3) { animation-delay: 0.3s; }
@keyframes typingDot {
  0%,100% { transform: translateY(0); opacity: 0.4; }
  50%     { transform: translateY(-4px); opacity: 1; }
}

/* caret */
.caret {
  display: inline-block;
  width: 7px; height: 1em;
  background: currentColor;
  margin-left: 2px;
  vertical-align: -2px;
  animation: caretBlink 0.9s steps(2) infinite;
}
@keyframes caretBlink { to { opacity: 0; } }

/* input */
.chat-input {
  border-top: 1px solid var(--hair);
  padding: 14px 18px;
  display: flex; align-items: center; gap: 10px;
  background: var(--glass);
}
.chat-input input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: 0;
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  padding: 10px 6px;
}
.chat-input input::placeholder { color: var(--ink-faint); }
.chat-send {
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--ink); color: var(--bg);
  transition: transform 0.2s ease, opacity 0.2s ease;
  font-size: 16px; line-height: 1;
}
.chat-send:hover { transform: scale(1.08); }
.chat-send:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* suggestion chips */
.chat-suggestions {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 8px;
  max-width: 820px; margin: 18px auto 0;
  padding: 0 24px;
}
.chat-suggestions button {
  padding: 9px 14px; border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--hair);
  font-size: 13px; color: var(--ink-soft);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: transform 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.chat-suggestions button:hover {
  color: var(--ink);
  border-color: rgba(10,10,10,0.18);
  transform: translateY(-2px);
}
[data-theme="dark"] .chat-suggestions button:hover {
  border-color: rgba(245,245,247,0.18);
}

@media (max-width: 720px) {
  .chat-window { min-height: 480px; border-radius: var(--radius); }
  .msg { max-width: 88%; }
}

/* ---------- stats ---------- */
.stats {
  padding: 120px 0;
  border-top: 1px solid var(--hair);
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
}
.stat {
  padding: 36px 24px 28px;
  border-left: 1px solid var(--hair);
}
.stat:first-child { border-left: none; padding-left: 0; }
.stat .v {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(48px, 5.5vw, 84px);
  letter-spacing: -0.04em; line-height: 0.95;
}
.stat .v .grad-text { background-size: 200% 100%; }
.stat .l {
  margin-top: 14px;
  font-size: 14px; color: var(--ink-soft); line-height: 1.4;
  max-width: 22ch;
}

/* ---------- CTA ---------- */
.cta {
  padding: 160px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.cta::before {
  content: "";
  position: absolute; z-index: -1;
  left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 70vw; max-width: 1000px; aspect-ratio: 1.6;
  border-radius: 50%;
  background:
    radial-gradient(60% 70% at 30% 30%, var(--a1) 0%, transparent 55%),
    radial-gradient(60% 60% at 70% 60%, var(--a2) 0%, transparent 55%),
    radial-gradient(50% 50% at 50% 90%, var(--a4) 0%, transparent 55%);
  filter: blur(60px);
  opacity: 0.55;
  animation: orbFloat 11s ease-in-out infinite;
}
.cta h2 { max-width: 16ch; margin: 0 auto; }
.cta p { margin: 32px auto 0; max-width: 50ch; }
.cta-ctas { margin-top: 44px; display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* ---------- footer ---------- */
.foot {
  padding: 64px 0 36px;
  border-top: 1px solid var(--hair);
  font-size: 13px;
  color: var(--ink-soft);
}
.foot-top {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 56px;
}
.foot-top h5 {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint); margin: 0 0 16px;
  font-weight: 500;
}
.foot-top ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.foot-top ul a:hover { color: var(--ink); }
.foot-bottom {
  padding-top: 28px; border-top: 1px solid var(--hair);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  color: var(--ink-faint); text-transform: uppercase;
}

/* ---------- reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(.2,.8,.2,1), transform 0.9s cubic-bezier(.2,.8,.2,1);
}
[data-reveal].in {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal-stagger] > * {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(.2,.8,.2,1), transform 0.9s cubic-bezier(.2,.8,.2,1);
  transition-delay: calc(var(--i, 0) * 80ms);
}
[data-reveal-stagger].in > * {
  opacity: 1;
  transform: translateY(0);
}

/* hero letter reveal */
.hero h1 .line span {
  transform: translateY(110%);
  display: inline-block;
  opacity: 0;
  transition: transform 1.1s cubic-bezier(.2,.8,.2,1), opacity 0.6s ease;
}
.hero.ready h1 .line span {
  transform: translateY(0);
  opacity: 1;
}
.hero.ready h1 .line:nth-child(1) span { transition-delay: 0.05s; }
.hero.ready h1 .line:nth-child(2) span { transition-delay: 0.18s; }
.hero.ready h1 .line:nth-child(3) span { transition-delay: 0.31s; }

.hero .hero-sub,
.hero .hero-ctas,
.hero .eyebrow {
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.hero.ready .eyebrow { opacity: 1; transform: none; transition-delay: 0.05s; }
.hero.ready .hero-sub { opacity: 1; transform: none; transition-delay: 0.55s; }
.hero.ready .hero-ctas { opacity: 1; transform: none; transition-delay: 0.7s; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .wrap, .wrap-wide { padding: 0 24px; }
  .nav-links { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .process-track { grid-template-columns: 1fr 1fr; }
  .process-track::before { display: none; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat { border-left: none; border-top: 1px solid var(--hair); padding: 28px 0; }
  .stat:first-child { padding-top: 28px; }
  .showcase-grid { grid-template-columns: 1fr 1fr; }
  .foot-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .showcase-grid { grid-template-columns: 1fr; }
}

/* respect motion preferences */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}