/* BitByte Lab — minimal, neutral design system */
:root {
  --bg: #eef2f3;
  --bg-2: #e3e8ea;
  --surface: #f7f9f9;
  --ink: #2d3142;
  --ink-2: #4f5d75;
  --muted: #7b8597;
  --line: #d3d7d9;
  --shade: #4f5d75;
  --light: #bfc0c0;
  --accent: #ef8354;
  --accent-ink: #ffffff;
  /* isometric block tones: light top, mid left, dark right */
  --top: #dfe4e6;
  --left: #bfc0c0;
  --right: #4f5d75;
  --top-ink: #4f5d75;
  --left-ink: #3a4256;
  --right-ink: #2d3142;
  --frame: 125ms; /* 3 frames at 24fps */
  --radius: 14px;
  --max: 1120px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 { margin: 0; font-weight: 500; letter-spacing: -0.02em; line-height: 1.15; }
h1 { font-size: clamp(2.4rem, 5.5vw, 4.4rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); }
h3 { font-size: 1.25rem; }
small, .small { font-size: 0.9rem; }
::selection { background: var(--accent); color: var(--accent-ink); }

.wrap { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 18px;
}
.lede { font-size: clamp(1.1rem, 1.6vw, 1.3rem); color: var(--ink-2); max-width: 640px; }
.muted { color: var(--muted); }
.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.01em; }
.brand .mark {
  width: 26px; height: 26px; border-radius: 7px;
  background: var(--ink); color: var(--bg);
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 11px; font-weight: 600;
}
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a { font-size: 0.95rem; color: var(--ink-2); transition: color .15s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav-links .btn, .nav-links .btn:hover { color: var(--bg); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 1.5px; background: var(--ink); margin: 5px 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 999px;
  font-size: 0.95rem; font-weight: 500;
  border: 1px solid var(--ink); background: var(--ink); color: var(--bg);
  transition: transform .15s, opacity .15s;
  cursor: pointer;
}
.btn:hover { opacity: .88; transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--ink); opacity: 1; }
.btn.sm { padding: 9px 16px; font-size: 0.88rem; }
.link { border-bottom: 1px solid var(--line); transition: border-color .15s; }
.link:hover { border-color: var(--ink); }

/* Sections */
section { padding: 96px 0; }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 48px; flex-wrap: wrap; }
.section-head p { max-width: 520px; color: var(--ink-2); margin: 12px 0 0; }

/* Hero */
.hero { padding: 120px 0 96px; }
.hero h1 { max-width: 14ch; }
.hero .lede { margin-top: 28px; }
.hero-actions { display: flex; gap: 14px; margin-top: 40px; flex-wrap: wrap; }
.hero-meta {
  margin-top: 72px; padding-top: 28px; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.hero-meta div span { display: block; }
.hero-meta .k { font-family: var(--mono); font-size: 0.72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.hero-meta .v { font-size: 1rem; }

/* Grid of cards */
.grid { display: grid; gap: 20px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  display: flex; flex-direction: column; gap: 14px;
  transition: border-color .2s, transform .2s;
}
a.card:hover { border-color: var(--muted); transform: translateY(-2px); }
.card h3 { font-size: 1.15rem; }
.card p { color: var(--ink-2); margin: 0; font-size: 0.98rem; }
.card .tag-row { margin-top: auto; padding-top: 10px; }
.tag {
  display: inline-block; font-family: var(--mono); font-size: 0.7rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px; margin: 0 6px 6px 0;
}
.tag.live { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }

/* App showcase */
.showcase {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center;
  padding: 56px 0; border-top: 1px solid var(--line);
}
.showcase:first-of-type { border-top: 0; }
.showcase.flip .visual { order: -1; }
.showcase h3 { font-size: clamp(1.5rem, 2.4vw, 2rem); margin-bottom: 14px; }
.showcase p { color: var(--ink-2); max-width: 480px; }
.showcase ul { margin: 18px 0 26px; padding: 0; list-style: none; color: var(--ink-2); }
.showcase li { padding: 8px 0; border-top: 1px solid var(--line); font-size: 0.95rem; }
.showcase li:last-child { border-bottom: 1px solid var(--line); }
.visual {
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 20px;
  aspect-ratio: 4 / 3; display: grid; place-items: center; overflow: hidden; position: relative;
}

/* Phone mock (pure CSS, neutral) */
.phone {
  width: 190px; aspect-ratio: 9 / 19;
  background: var(--surface); border: 1px solid var(--line); border-radius: 28px;
  box-shadow: 0 30px 60px -30px rgba(43,42,39,.35), inset 0 0 0 6px var(--bg);
  padding: 22px 14px; display: flex; flex-direction: column; gap: 10px;
  transform: rotate(-4deg);
}
.phone.b { transform: rotate(5deg) translate(0, 18px); }
.phone .bar { height: 8px; border-radius: 6px; background: var(--line); }
.phone .bar.w60 { width: 60%; } .phone .bar.w40 { width: 40%; } .phone .bar.w80 { width: 80%; }
.phone .big { font-size: 1.6rem; font-weight: 500; letter-spacing: -0.03em; margin: 8px 0 2px; }
.phone .block { border-radius: 10px; background: var(--bg-2); height: 54px; }
.phone .block.accent { background: var(--accent); opacity: .85; }
.phone .row { display: flex; gap: 8px; }
.phone .row .block { flex: 1; height: 42px; }
.phone .dot { width: 34px; height: 34px; border-radius: 50%; background: var(--ink); margin: auto auto 0; opacity: .9; }
.phones { display: flex; gap: 14px; align-items: center; }

/* Process / list */
.steps { counter-reset: s; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step { padding-top: 22px; border-top: 1px solid var(--ink); }
.step::before {
  counter-increment: s; content: "0" counter(s);
  font-family: var(--mono); font-size: .75rem; color: var(--muted); display: block; margin-bottom: 14px;
}
.step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step p { color: var(--ink-2); font-size: .95rem; margin: 0; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat { padding: 30px; background: var(--surface); border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat .n { font-size: 2.2rem; letter-spacing: -0.03em; font-weight: 500; }
.stat .l { color: var(--muted); font-size: .9rem; margin-top: 4px; }

/* CTA band */
.cta { background: var(--ink); color: var(--bg); border-radius: 22px; padding: 64px 56px; display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; }
.cta h2 { max-width: 18ch; }
.cta p { color: color-mix(in srgb, var(--bg) 70%, transparent); margin: 10px 0 0; }
.cta .btn { background: var(--bg); color: var(--ink); border-color: var(--bg); }

/* Case study */
.case-hero { padding: 96px 0 56px; }
.case-hero h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); }
.case-facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--line); }
.case-facts .k { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.case-body { display: grid; grid-template-columns: 220px 1fr; gap: 64px; }
.case-toc { position: sticky; top: 100px; align-self: start; font-size: .9rem; }
.case-toc a { display: block; padding: 6px 0; color: var(--muted); }
.case-toc a:hover { color: var(--ink); }
.prose { max-width: 680px; }
.prose h2 { font-size: 1.6rem; margin: 56px 0 18px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.1rem; margin: 32px 0 10px; }
.prose p, .prose li { color: var(--ink-2); }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 6px; }
.prose blockquote { margin: 32px 0; padding: 22px 26px; border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 12px 12px 0; font-size: 1.05rem; }
.prose .figure { margin: 32px 0; }
.prose .figure .visual { aspect-ratio: 16 / 9; }
.prose .figure figcaption { font-size: .85rem; color: var(--muted); margin-top: 10px; }
.kv { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 24px 0; }
.kv div { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; }
.kv .k { font-family: var(--mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.kv .v { margin-top: 4px; font-size: .95rem; }
.case-nav { display: flex; justify-content: space-between; gap: 20px; padding: 40px 0; border-top: 1px solid var(--line); flex-wrap: wrap; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; }
.contact-list { list-style: none; padding: 0; margin: 32px 0 0; }
.contact-list li { padding: 18px 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.contact-list li:last-child { border-bottom: 1px solid var(--line); }
.contact-list .k { color: var(--muted); font-size: .9rem; }
form { display: grid; gap: 18px; }
.field { display: grid; gap: 8px; }
.field label { font-size: .85rem; color: var(--ink-2); }
.field input, .field textarea, .field select {
  font: inherit; font-size: 1rem; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
  padding: 13px 14px; width: 100%; outline: none; transition: border-color .15s;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--ink); }
.field textarea { min-height: 150px; resize: vertical; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-note { font-size: .85rem; color: var(--muted); }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 56px 0 40px; }
.foot { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; }
.foot h4 { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.foot a { display: block; padding: 4px 0; color: var(--ink-2); font-size: .95rem; }
.foot a:hover { color: var(--ink); }
.foot p { color: var(--muted); font-size: .95rem; max-width: 320px; }
.foot-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); font-size: .85rem; color: var(--muted); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* Responsive */
@media (max-width: 960px) {
  .grid.three { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .foot { grid-template-columns: 1fr 1fr; }
  .case-body { grid-template-columns: 1fr; gap: 32px; }
  .case-toc { position: static; display: flex; gap: 18px; flex-wrap: wrap; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-meta, .case-facts { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  section { padding: 64px 0; }
  .hero { padding: 72px 0 56px; }
  .wrap { width: calc(100% - 40px); }
  .grid.two, .grid.three, .steps, .stats, .foot, .field-row, .kv { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--line); }
  .stat:last-child { border-bottom: 0; }
  .showcase, .showcase.flip { grid-template-columns: 1fr; gap: 28px; }
  .showcase.flip .visual { order: 0; }
  .phone { width: 150px; }
  .cta { padding: 44px 28px; }
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 10px 24px 18px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; width: 100%; border-top: 1px solid var(--line); }
  .nav-links .btn { margin-top: 12px; border-top: 0; width: auto; }
  .nav-toggle { display: block; }
}


/* ---------- Isometric world ---------- */
.scene { position: relative; }
.scene svg { width: 100%; height: auto; overflow: hidden; display: block; }
.scene text { font-family: var(--font); font-size: 12px; fill: var(--ink-2); letter-spacing: .02em; }
.scene .leader { stroke: var(--shade); stroke-width: 1; fill: none; opacity: .9; }
.scene .anchor { fill: var(--shade); }
.scene .lbl { opacity: 0; transition: opacity .4s ease; }
.scene.in .lbl { opacity: 1; transition-delay: calc(var(--i, 0) * var(--frame) + .5s); }
.face-top { fill: var(--top); } .face-left { fill: var(--left); } .face-right { fill: var(--right); }
.ink .face-top { fill: #6c7891; } .ink .face-left { fill: var(--shade); } .ink .face-right { fill: var(--ink); }
.acc .face-top { fill: #f4a07c; } .acc .face-left { fill: var(--accent); } .acc .face-right { fill: #c9643b; }
.ground .face-top { fill: #e4e9eb; } .ground .face-left { fill: #cfd5d8; } .ground .face-right { fill: #aeb6bd; }
.drop { opacity: 0; transform: translateY(-40px); }
.scene.in .drop { animation: drop .55s cubic-bezier(.2,.7,.3,1) forwards; animation-delay: calc(var(--i, 0) * var(--frame)); }
@keyframes drop {
  0%   { opacity: 0; transform: translateY(-40px); }
  60%  { opacity: 1; transform: translateY(0); }
  78%  { transform: translateY(-6px); }
  90%  { transform: translateY(0); }
  96%  { transform: translateY(-2px); }
  100% { opacity: 1; transform: translateY(0); }
}
/* roof lift: once the building has landed, the roof rises and the floors spread apart */
.scene.in .roof { animation: drop .55s cubic-bezier(.2,.7,.3,1) forwards, lift .7s ease-in-out forwards; animation-delay: calc(var(--i, 0) * var(--frame)), 1.4s; }
@keyframes lift { to { transform: translateY(-40px); } }
.scene.in .floor { animation: drop .55s cubic-bezier(.2,.7,.3,1) forwards, spread .7s ease-in-out forwards; animation-delay: calc(var(--i, 0) * var(--frame)), 1.4s; }
@keyframes spread { to { transform: translateY(calc(var(--lift, 0) * -1px)); } }
.scene .lbl.inside { transition-delay: 2.1s !important; }
@media (prefers-reduced-motion: reduce) {
  .drop, .scene .lbl { opacity: 1; transform: none; animation: none !important; }
  .scene.in .roof { transform: translateY(-40px); }
  .scene.in .floor { transform: translateY(calc(var(--lift, 0) * -1px)); }
}

/* Hero with scene */
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero-grid .scene { will-change: transform; }

/* Screenshots */
.shot { border-radius: 22px; overflow: hidden; border: 1px solid var(--line); background: var(--surface); box-shadow: 0 24px 50px -30px rgba(45,49,66,.45); }
.shot img { width: 100%; height: auto; display: block; }
.shots-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: end; padding: 28px; }
.shots-pair .shot:first-child { transform: translateY(-14px); }
.visual.shots { aspect-ratio: auto; background: var(--bg-2); }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 18px; }
.gallery .shot { border-radius: 18px; }
.strip { display: flex; gap: 18px; overflow-x: auto; padding: 6px 0 18px; scroll-snap-type: x mandatory; scrollbar-width: thin; }
.strip .shot { flex: 0 0 210px; scroll-snap-align: start; border-radius: 18px; }
.app-icon { width: 56px; height: 56px; border-radius: 14px; border: 1px solid var(--line); }
.showcase .eyebrow { display: flex; align-items: center; gap: 12px; }
.showcase .eyebrow .app-icon { width: 36px; height: 36px; border-radius: 9px; }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero-grid .scene { max-width: 560px; margin: 0 auto; }
}
@media (max-width: 680px) {
  .shots-pair { padding: 18px; gap: 12px; }
  .strip .shot { flex-basis: 170px; }
}

/* Brand logo */
.brand .mark { background: transparent; border-radius: 8px; overflow: hidden; width: 28px; height: 28px; }
.brand .mark img { width: 100%; height: 100%; display: block; object-fit: cover; }
.about-logo { width: 120px; height: 120px; border-radius: 28px; margin-bottom: 28px; display: block; box-shadow: 0 1px 0 var(--line); }

/* ---------- Premium motion layer ---------- */
:root { --ease-out: cubic-bezier(.16, 1, .3, 1); --ease-io: cubic-bezier(.65, 0, .35, 1); }

/* Scroll progress line */
.progress { position: fixed; top: 0; left: 0; height: 2px; width: 100%; z-index: 40; transform-origin: 0 50%; transform: scaleX(var(--p, 0)); background: linear-gradient(90deg, var(--accent), var(--ink)); pointer-events: none; }

/* Nav: hides on scroll down, returns on scroll up; shadow once scrolled */
.nav { transition: transform .5s var(--ease-out), box-shadow .4s, background .4s; }
.nav.scrolled { box-shadow: 0 10px 30px -20px rgba(45,49,66,.35); }
.nav.hidden { transform: translateY(-100%); }
.nav-links a:not(.btn) { position: relative; }
.nav-links a:not(.btn)::after { content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 1px; background: var(--ink); transform: scaleX(0); transform-origin: 100% 50%; transition: transform .4s var(--ease-out); }
.nav-links a:not(.btn):hover::after, .nav-links a[aria-current="page"]::after { transform: scaleX(1); transform-origin: 0 50%; }
.nav-toggle span { transition: transform .35s var(--ease-out), opacity .2s; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }
.brand .mark { transition: transform .5s var(--ease-out); }
.brand:hover .mark { transform: rotate(-8deg) scale(1.06); }

/* Hero: page-load choreography */
.hero { position: relative; overflow: clip; isolation: isolate; }
.hero::before, .hero::after {
  content: ""; position: absolute; z-index: -1; border-radius: 50%; filter: blur(70px); pointer-events: none;
  opacity: .55; will-change: transform;
}
.hero::before { width: 520px; height: 520px; right: -120px; top: -140px; background: radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--accent) 55%, transparent), transparent 65%); animation: driftA 18s var(--ease-io) infinite alternate; }
.hero::after  { width: 460px; height: 460px; left: -160px; bottom: -200px; background: radial-gradient(circle at 60% 40%, color-mix(in srgb, var(--shade) 40%, transparent), transparent 65%); animation: driftB 22s var(--ease-io) infinite alternate; }
@keyframes driftA { from { transform: translate(0,0) scale(1); } to { transform: translate(-80px, 60px) scale(1.15); } }
@keyframes driftB { from { transform: translate(0,0) scale(1); } to { transform: translate(90px, -50px) scale(1.1); } }

.hero .eyebrow, .hero .lede, .hero-actions > *, .hero-meta > *, .case-hero .eyebrow, .case-hero .lede, .case-facts > * {
  opacity: 0; transform: translateY(18px);
  animation: rise .9s var(--ease-out) forwards;
}
.hero .eyebrow, .case-hero .eyebrow { animation-delay: .05s; }
.hero .lede, .case-hero .lede { animation-delay: .55s; }
.hero-actions > :nth-child(1) { animation-delay: .7s; }
.hero-actions > :nth-child(2) { animation-delay: .8s; }
.hero-meta > *, .case-facts > * { animation-delay: calc(.9s + var(--n, 0) * .08s); }
@keyframes rise { to { opacity: 1; transform: none; } }

/* Word-by-word heading reveal (applied by JS) */
.words .w { display: inline-block; overflow: hidden; vertical-align: bottom; padding-bottom: .08em; margin-bottom: -.08em; }
.words .w > span { display: inline-block; transform: translateY(110%) rotate(2deg); transform-origin: 0 100%; animation: wordUp 1s var(--ease-out) forwards; animation-delay: calc(var(--d, 0) * 1ms); }
@keyframes wordUp { to { transform: none; } }
.words.on-scroll .w > span { animation-play-state: paused; }
.words.on-scroll.in .w > span { animation-play-state: running; }

/* Scene: idle float after landing, light-tilt on hover */
.hero-grid .scene svg { transition: transform .6s var(--ease-out); }
.hero-grid .scene.in svg { animation: float 7s ease-in-out 2.4s infinite; }
@keyframes float { 0%,100% { translate: 0 0; } 50% { translate: 0 -10px; } }

/* Reveal upgrades: softer, longer, with blur, and staggered children */
.reveal { transform: translateY(26px); filter: blur(6px); transition: opacity .9s var(--ease-out), transform .9s var(--ease-out), filter .9s var(--ease-out); }
.reveal.in { filter: none; }
.stagger > * { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); transition-delay: calc(var(--n, 0) * 90ms); }
.stagger.in > * { opacity: 1; transform: none; }
.stagger.reveal { opacity: 1; transform: none; filter: none; }

/* Cards: spotlight + tilt + lift */
.card, .kv div, .stat, .visual, .shot { position: relative; }
.card { transition: border-color .4s, transform .5s var(--ease-out), box-shadow .5s var(--ease-out); transform-style: preserve-3d; }
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .4s;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%);
}
.card:hover::after { opacity: 1; }
a.card:hover { transform: translateY(-6px) rotateX(var(--rx, 0)) rotateY(var(--ry, 0)); box-shadow: 0 30px 60px -35px rgba(45,49,66,.45); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.card h3 { transition: transform .4s var(--ease-out); }
a.card:hover h3 { transform: translateX(3px); }
.shot { transition: transform .6s var(--ease-out), box-shadow .6s var(--ease-out); }
.shot:hover { transform: translateY(-8px) scale(1.015); box-shadow: 0 40px 70px -35px rgba(45,49,66,.55); }
.shot img { transition: transform 1.2s var(--ease-out); }
.shot:hover img { transform: scale(1.03); }
.visual { transition: transform .6s var(--ease-out); }
.showcase:hover .visual { transform: translateY(-4px); }
.phones .phone { transition: transform .7s var(--ease-out); }
.showcase:hover .phone { transform: rotate(-6deg) translateY(-6px); }
.showcase:hover .phone.b { transform: rotate(7deg) translate(0, 12px); }
.step { transition: transform .5s var(--ease-out), border-color .4s; }
.step:hover { transform: translateY(-4px); border-top-color: var(--accent); }
.step::before { transition: color .4s; }
.step:hover::before { color: var(--accent); }

/* Buttons: sweep sheen, arrow nudge, soft magnetic (JS sets --tx/--ty) */
.btn { position: relative; overflow: hidden; transition: transform .5s var(--ease-out), opacity .3s, box-shadow .5s var(--ease-out), border-color .3s; transform: translate(var(--tx, 0), var(--ty, 0)); }
.btn::before { content: ""; position: absolute; inset: 0; background: linear-gradient(115deg, transparent 30%, rgba(255,255,255,.22) 50%, transparent 70%); transform: translateX(-120%); transition: transform .8s var(--ease-out); }
.btn:hover::before { transform: translateX(120%); }
.btn:hover { opacity: 1; box-shadow: 0 14px 30px -16px rgba(45,49,66,.6); }
.btn.ghost:hover { background: color-mix(in srgb, var(--ink) 5%, transparent); box-shadow: none; }
.btn:active { transition-duration: .1s; transform: translate(var(--tx, 0), var(--ty, 0)) scale(.97); }
.cta { position: relative; overflow: hidden; }
.cta::before { content: ""; position: absolute; width: 480px; height: 480px; right: -180px; top: -220px; border-radius: 50%; filter: blur(60px); background: radial-gradient(circle, color-mix(in srgb, var(--accent) 55%, transparent), transparent 65%); animation: driftA 14s var(--ease-io) infinite alternate; pointer-events: none; }
.cta > * { position: relative; }
.link { background: linear-gradient(var(--ink), var(--ink)) no-repeat 0 100% / 0 1px; border-bottom-color: transparent; transition: background-size .5s var(--ease-out), color .3s; padding-bottom: 2px; }
.link:hover { background-size: 100% 1px; border-color: transparent; }
.foot a, .nav-links a, .contact-list a { transition: color .3s, transform .4s var(--ease-out); }
.foot a:hover { transform: translateX(4px); }

/* Form */
.field input, .field textarea, .field select { transition: border-color .3s, box-shadow .3s, transform .3s var(--ease-out); }
.field input:focus, .field textarea:focus, .field select:focus { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent); border-color: var(--accent); }
.field label { transition: color .3s; }
.field:focus-within label { color: var(--ink); }

/* Case study prose */
.prose blockquote { transition: transform .5s var(--ease-out); }
.prose blockquote:hover { transform: translateX(4px); }
.case-toc a { transition: color .3s, padding-left .4s var(--ease-out); }
.case-toc a:hover, .case-toc a.active { color: var(--ink); padding-left: 10px; }
.case-toc a::before { content: ""; display: inline-block; width: 0; height: 1px; background: var(--accent); vertical-align: middle; margin-right: 0; transition: width .4s var(--ease-out), margin-right .4s var(--ease-out); }
.case-toc a:hover::before, .case-toc a.active::before { width: 0; }

@media (hover: none) { a.card:hover { transform: translateY(-2px); } .card::after { display: none; } }
@media (prefers-reduced-motion: reduce) {
  .hero::before, .hero::after, .cta::before, .hero-grid .scene.in svg { animation: none !important; }
  .hero .eyebrow, .hero .lede, .hero-actions > *, .hero-meta > *, .case-hero .eyebrow, .case-hero .lede, .case-facts > *, .stagger > *, .words .w > span { opacity: 1; transform: none; animation: none !important; transition: none; }
  .reveal { filter: none; }
  .progress { display: none; }
  .nav.hidden { transform: none; }
  .btn::before { display: none; }
}