/* ============================================================
   YASH® — Portfolio stylesheet
   Organized: tokens → base → typography → layout → sections
   → interactions → responsive → accessibility.
   No frameworks. All values flow from the custom properties.
   ============================================================ */

/* ---------- 1. CSS custom properties ---------- */
:root {
  --bg: #090a0c;
  --bg-2: #111317;
  --bg-3: #171a1f;
  --text: #f5f3ed;
  --text-2: #a0a3aa;
  --accent: #6ee7f0;
  --accent-ink: #04222a;
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.22);

  --font-head: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-12: 6rem;

  --radius: 14px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 180ms;
  --dur-med: 420ms;
  --dur-slow: 800ms;

  --max: 1180px;
}

/* ---------- 2. Reset and base styles ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
}

/* Subtle grain over everything — fixed, pointer-transparent, barely there. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 200;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

img, canvas, video { max-width: 100%; }

a { color: inherit; }

button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 300;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.6rem 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: 1rem; }

/* ---------- 3. Typography ---------- */
h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0;
}

p { margin: 0 0 1rem; }

.eyebrow, .section-label {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin: 0 0 var(--space-3);
}

.section-title {
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  margin-bottom: var(--space-3);
}

.section-lede {
  font-size: 1.12rem;
  color: var(--text-2);
  max-width: 58ch;
}

.section-note {
  color: var(--text-2);
  max-width: 42ch;
  font-size: 0.98rem;
}

/* ---------- 4. Global layout ---------- */
.container {
  width: min(var(--max), calc(100% - 3rem));
  margin-inline: auto;
}

.section { padding: var(--space-12) 0; }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

/* ---------- 5. Navigation ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background var(--dur-med) var(--ease-out), border-color var(--dur-med) var(--ease-out);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(9, 10, 12, 0.86);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}
.brand-mark {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}
.brand sup { font-size: 0.55em; }

.nav-list {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.availability {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-2);
  white-space: nowrap;
}
.availability-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(110, 231, 240, 0.6);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(110, 231, 240, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(110, 231, 240, 0); }
  100% { box-shadow: 0 0 0 0 rgba(110, 231, 240, 0); }
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  transition: transform var(--dur-fast) var(--ease-out);
}
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

.mobile-menu {
  border-top: 1px solid var(--border);
  background: rgba(9, 10, 12, 0.97);
  padding: var(--space-3) var(--space-3) var(--space-4);
}
.mobile-menu[hidden] { display: none; }
.mobile-nav-list { list-style: none; margin: 0 0 var(--space-3); padding: 0; }
.mobile-nav-list a {
  display: block;
  padding: 0.85rem 0;
  font-family: var(--font-head);
  font-size: 1.5rem;
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

/* ---------- 6. Hero section ---------- */
.hero {
  position: relative;
  padding: calc(76px + var(--space-8)) 0 var(--space-8);
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    radial-gradient(900px 500px at 78% 18%, rgba(110, 231, 240, 0.07), transparent 60%),
    radial-gradient(700px 500px at 10% 90%, rgba(255, 255, 255, 0.04), transparent 60%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-6);
  align-items: center;
  width: 100%;
}

.hero-title {
  font-size: clamp(3rem, 7.4vw, 5.9rem);
  margin-bottom: var(--space-3);
}
.hero-line { display: block; }
.hero-line:nth-child(2) { color: var(--text-2); }

.hero-lede {
  font-size: 1.16rem;
  color: var(--text-2);
  max-width: 46ch;
  margin-bottom: var(--space-4);
}

.hero-ctas { display: flex; gap: 0.9rem; flex-wrap: wrap; margin-bottom: var(--space-6); }

.hero-tags {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: var(--space-3) 0 0;
  border-top: 1px solid var(--border);
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-2);
}

.hero-scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%);
  font-family: var(--font-head);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  color: var(--text-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.hero-scroll-hint span {
  width: 1px;
  height: 34px;
  background: linear-gradient(var(--accent), transparent);
}

/* ---------- 7. Three.js canvas ---------- */
.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-height: 620px;
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  background: radial-gradient(circle at 50% 42%, #161a17 0%, #0c0e10 62%);
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: pan-y; /* pointer parallax must never hijack vertical scrolling */
}

/* Fallback CSS sculpture: hidden unless JS reports WebGL failure. */
.hero-fallback { display: none; }
body.no-webgl .hero-fallback { display: block; }
body.no-webgl #hero-canvas { display: none; }
.hero-fallback { position: absolute; inset: 0; }
.fallback-node {
  position: absolute;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle at 35% 30%, #ffffff, #aab4ba 55%, #4a5257);
  box-shadow: 0 0 22px rgba(110, 231, 240, 0.28);
}
.fallback-node.node-hub { width: 17%; aspect-ratio: 1; left: 50%; top: 46%; }
.fallback-node.node-a { width: 10%; aspect-ratio: 1; left: 72%; top: 30%; }
.fallback-node.node-b { width: 8%; aspect-ratio: 1; left: 30%; top: 28%; }
.fallback-node.node-c { width: 9%; aspect-ratio: 1; left: 26%; top: 66%; }
.fallback-node.node-d { width: 7%; aspect-ratio: 1; left: 70%; top: 68%; }
.fallback-link {
  position: absolute;
  left: 50%; top: 46%;
  height: 1px;
  transform-origin: left center;
  background: linear-gradient(90deg, rgba(110, 231, 240, 0.75), rgba(110, 231, 240, 0.15));
}
.fallback-link.link-a { width: 24%; transform: rotate(-28deg); }
.fallback-link.link-b { width: 22%; transform: rotate(180deg); }
.fallback-link.link-c { width: 26%; transform: rotate(155deg); }
.fallback-link.link-d { width: 22%; transform: rotate(28deg); }

.hero-caption {
  position: absolute;
  left: 1rem;
  bottom: 0.9rem;
  margin: 0;
  font-family: var(--font-head);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  color: var(--text-2);
}

/* ---------- 8. Buttons and interactive elements ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.35rem;
  border-radius: 999px;
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn span { transition: transform var(--dur-fast) var(--ease-out); }
.btn:hover span { transform: translate(2px, -2px); }

.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #d4ff7d; }

.btn-ghost { border-color: var(--border-strong); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--text); }

.btn-small { padding: 0.6rem 1rem; font-size: 0.74rem; border-color: var(--border-strong); background: transparent; }
.btn-small:hover { border-color: var(--text); }

.btn-large { padding: 1.1rem 1.8rem; font-size: 0.9rem; }

.nav-link {
  position: relative;
  text-decoration: none;
  font-size: 0.94rem;
  color: var(--text-2);
  padding: 0.3rem 0;
  transition: color var(--dur-fast) var(--ease-out);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  height: 1px;
  width: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur-med) var(--ease-out);
}
.nav-link:hover { color: var(--text); }
.nav-link:hover::after { transform: scaleX(1); transform-origin: left; }

/* ---------- Marquee (decorative) ---------- */
.marquee {
  overflow: hidden;
  border-block: 1px solid var(--border);
  padding: 0.9rem 0;
  background: var(--bg-2);
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 30s linear infinite;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-2);
  white-space: nowrap;
}
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- 9. Project showcase ---------- */
.work { background: var(--bg-2); border-block: 1px solid var(--border); }

.work-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.project-card { min-width: 0; }
.project-featured { grid-row: span 2; }
.project-wide { grid-column: 1 / -1; }

.project-open {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  cursor: pointer;
  overflow: hidden;
  transition: border-color var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out);
}
.project-open:hover { border-color: var(--border-strong); transform: translateY(-4px); }

/* Layered CSS visuals: no external images, so nothing can 404 or
   misrepresent a project. Each card gets its own composition. */
.project-visual {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-3);
  border-bottom: 1px solid var(--border);
}
.project-featured .project-visual { aspect-ratio: 16 / 12; }
.project-wide .project-visual { aspect-ratio: 21 / 8; }

.visual-orbital { background: radial-gradient(circle at 62% 40%, #20251c 0%, #101210 58%); }
.visual-orbit {
  position: absolute;
  border: 1px solid rgba(245, 243, 237, 0.4);
  border-radius: 50%;
}
.orbit-1 { width: 62%; aspect-ratio: 1; left: 19%; top: 16%; transform: rotateX(64deg); }
.orbit-2 { width: 48%; aspect-ratio: 1; left: 26%; top: 26%; transform: rotateX(64deg) rotateZ(55deg); border-color: rgba(110, 231, 240, 0.55); }
.visual-core {
  position: absolute;
  left: 50%; top: 46%;
  width: 15%; aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #eaffbf, var(--accent) 55%, #5d7a1e);
  transition: transform var(--dur-slow) var(--ease-out);
}
.project-open:hover .visual-core { transform: translate(-50%, -50%) scale(1.15); }

.visual-commerce { background: linear-gradient(160deg, #191713 0%, #101210 70%); }
.visual-shelf {
  position: absolute;
  left: 12%; right: 12%;
  height: 2px;
  background: rgba(245, 243, 237, 0.35);
}
.visual-shelf:nth-child(1) { top: 26%; }
.visual-shelf:nth-child(2) { top: 50%; }
.visual-shelf:nth-child(3) { top: 74%; }

.visual-noir { background: linear-gradient(180deg, #141416 0%, #0b0b0c 100%); }
.visual-column {
  position: absolute;
  bottom: 0;
  width: 16%;
  background: linear-gradient(180deg, rgba(245, 243, 237, 0.5), rgba(245, 243, 237, 0.08));
}
.visual-column:nth-child(1) { left: 16%; height: 78%; }
.visual-column:nth-child(2) { left: 42%; height: 58%; }
.visual-column:nth-child(3) { left: 68%; height: 88%; }

.visual-nova { background: radial-gradient(circle at 80% 20%, #16211a 0%, #0e1010 60%); }
.visual-grid-line {
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: rgba(255, 255, 255, 0.08);
}
.visual-grid-line:nth-child(1) { left: 25%; }
.visual-grid-line:nth-child(2) { left: 50%; }
.visual-grid-line:nth-child(3) { left: 75%; }
.visual-grid-line:nth-child(4) { left: 90%; }
.visual-node {
  position: absolute;
  left: 50%; top: 50%;
  width: 14px; height: 14px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 24px rgba(110, 231, 240, 0.8);
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) var(--space-3) 0;
}
.project-number, .project-tag {
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--text-2);
}
.project-tag { color: var(--accent); border: 1px solid rgba(110, 231, 240, 0.4); border-radius: 999px; padding: 0.2rem 0.6rem; }

.project-title { font-size: 1.7rem; padding: var(--space-2) var(--space-3) 0; }
.project-category { color: var(--accent); font-family: var(--font-head); font-size: 0.85rem; padding: 0.3rem var(--space-3) 0; margin: 0; }
.project-desc { color: var(--text-2); padding: 0.5rem var(--space-3) 0; margin: 0; }
.project-link {
  display: inline-block;
  padding: var(--space-2) var(--space-3) var(--space-3);
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text);
}
.project-link span { display: inline-block; transition: transform var(--dur-fast) var(--ease-out); }
.project-open:hover .project-link span { transform: translate(3px, -3px); }

.concept-note {
  margin-top: var(--space-4);
  color: var(--text-2);
  font-size: 0.9rem;
  border-left: 2px solid var(--accent);
  padding-left: var(--space-2);
}

/* ---------- 10. About section ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-6);
}
.about-copy p { color: var(--text-2); font-size: 1.06rem; }
.about-copy p:first-child { color: var(--text); }

.capability-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
}
.capability-list li {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.45rem 0.95rem;
  font-family: var(--font-head);
  font-size: 0.82rem;
  color: var(--text-2);
}

/* ---------- 11. Services section ---------- */
.services { background: var(--bg-2); border-block: 1px solid var(--border); }
.service-list { list-style: none; margin: 0; padding: 0; }
.service-item {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: var(--space-3);
  align-items: baseline;
  padding: var(--space-4) 0;
  border-top: 1px solid var(--border);
  transition: padding-left var(--dur-med) var(--ease-out);
}
.service-item:last-child { border-bottom: 1px solid var(--border); }
.service-item:hover { padding-left: 0.75rem; }
.service-number { font-family: var(--font-head); color: var(--accent); font-weight: 600; }
.service-body h3 { font-size: 1.5rem; margin-bottom: 0.3rem; }
.service-body p { color: var(--text-2); margin: 0; max-width: 56ch; }
.service-arrow { font-size: 1.3rem; color: var(--text-2); transition: transform var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out); }
.service-item:hover .service-arrow { transform: translate(3px, -3px); color: var(--accent); }

/* ---------- 12. Process section ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}
.process-step { border-top: 1px solid var(--border); padding-top: var(--space-3); }
.process-number { font-family: var(--font-head); color: var(--accent); font-weight: 700; font-size: 1.1rem; }
.process-step h3 { font-size: 1.05rem; letter-spacing: 0.08em; margin: 0.7rem 0 0.5rem; }
.process-step p { color: var(--text-2); font-size: 0.95rem; margin: 0; }

/* ---------- Playground (CSS-3D, intentionally light) ---------- */
.playground { background: var(--bg-2); border-bottom: 1px solid var(--border); }
.playground-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-6);
  align-items: center;
}
.playground-stage {
  position: relative;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  background: radial-gradient(circle at 50% 45%, #171b15 0%, #0c0e10 65%);
  perspective: 900px;
  cursor: grab;
  touch-action: none;
}
.playground-stage:active { cursor: grabbing; }
.play-sculpture {
  position: absolute;
  left: 50%; top: 50%;
  width: 220px; height: 220px;
  margin: -110px 0 0 -110px;
  transform-style: preserve-3d;
  will-change: transform;
}
.play-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1.5px solid rgba(245, 243, 237, 0.5);
}
.play-ring-a { transform: rotateX(68deg); }
.play-ring-b { transform: rotateX(68deg) rotateZ(60deg); border-color: rgba(110, 231, 240, 0.55); }
.play-ring-c { transform: rotateX(68deg) rotateZ(120deg); border-color: rgba(245, 243, 237, 0.28); }
.play-core {
  position: absolute;
  left: 50%; top: 50%;
  width: 74px; height: 74px;
  margin: -37px 0 0 -37px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #eaffbf, var(--accent) 55%, #5d7a1e);
  transform: translateZ(30px);
}
.playground-hint {
  position: absolute;
  left: 50%; bottom: 1rem;
  transform: translateX(-50%);
  margin: 0;
  font-family: var(--font-head);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  color: var(--text-2);
  white-space: nowrap;
}

/* ---------- Type lab: second small live demo (typography range) ---------- */
.type-lab { margin-top: var(--space-4); border-top: 1px solid var(--border); padding-top: var(--space-3); }
.type-lab-label { font-family: var(--font-head); font-size: 0.64rem; letter-spacing: 0.2em; color: var(--text-2); margin: 0 0 var(--space-2); }
.type-lab input[type="text"] {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  margin-bottom: var(--space-2);
}
.type-lab input[type="text"]:focus { outline: none; border-color: var(--accent); }
.type-lab-slider-label { display: block; font-size: 0.85rem; color: var(--text-2); margin-bottom: 0.3rem; }
.type-lab input[type="range"] { width: 100%; accent-color: var(--accent); margin-bottom: var(--space-2); }
.type-preview { font-family: var(--font-head); font-size: 56px; line-height: 1.05; color: var(--text); margin: 0; overflow-wrap: anywhere; }

/* ---------- 13. Contact section ---------- */
.contact-inner { max-width: 820px; text-align: left; }
.contact-ctas { display: flex; gap: 0.9rem; flex-wrap: wrap; margin: var(--space-4) 0 var(--space-6); }

.contact-form {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  background: var(--bg-2);
}
.form-note { color: var(--text-2); font-size: 0.92rem; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}
.contact-form label {
  display: block;
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
}
.contact-form input, .contact-form textarea {
  display: block;
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.85rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font: inherit;
  resize: vertical;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 0;
  border-color: transparent;
}
.form-error { color: #ff9d8a; font-size: 0.9rem; }
.form-success { color: var(--accent); font-size: 0.9rem; }

/* Honeypot: kept out of sight and out of tab order for humans. */
.honeypot {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.social-list {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: var(--space-3) 0 0;
  border-top: 1px solid var(--border);
}
.social-list a { text-decoration: none; font-family: var(--font-head); font-size: 0.9rem; color: var(--text-2); transition: color var(--dur-fast) var(--ease-out); }
.social-list a:hover { color: var(--accent); }

/* ---------- 14. Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: var(--space-6) 0; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: var(--space-4);
  align-items: start;
}
.footer-brand p { color: var(--text-2); font-size: 0.92rem; margin-top: var(--space-2); max-width: 34ch; }
.footer-nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.footer-nav a { text-decoration: none; color: var(--text-2); }
.footer-nav a:hover { color: var(--text); }
.footer-meta { text-align: right; color: var(--text-2); font-size: 0.9rem; }
.footer-meta p { margin-bottom: 0.4rem; }
.to-top {
  background: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  margin-top: 0.8rem;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.to-top:hover { border-color: var(--text); }

/* ---------- Case-study dialog ---------- */
.case-dialog {
  width: min(720px, calc(100% - 2rem));
  background: var(--bg-2);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  padding: 0;
}
.case-dialog::backdrop { background: rgba(0, 0, 0, 0.72); backdrop-filter: blur(4px); }
.case-dialog-inner { padding: var(--space-4); position: relative; }
.case-close {
  position: absolute;
  top: 1rem; right: 1rem;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg);
  cursor: pointer;
  font-size: 1rem;
}
.case-title { font-size: clamp(1.9rem, 5vw, 2.8rem); margin: 0.5rem 0 0.3rem; }
.case-category { color: var(--accent); font-family: var(--font-head); margin-bottom: var(--space-3); }
.case-dialog-inner h3 { font-size: 1rem; letter-spacing: 0.08em; margin: var(--space-3) 0 0.4rem; }
.case-dialog-inner p { color: var(--text-2); }
.case-overview { color: var(--text) !important; font-size: 1.05rem; }
.case-tech { display: flex; flex-wrap: wrap; gap: 0.5rem; list-style: none; margin: 0; padding: 0; }
.case-tech li { border: 1px solid var(--border); border-radius: 999px; padding: 0.35rem 0.85rem; font-size: 0.82rem; color: var(--text-2); }
.case-concept-note { border-left: 2px solid var(--accent); padding-left: var(--space-2); font-size: 0.88rem; margin-top: var(--space-4); }
.case-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: var(--space-4); }

/* ---------- Client login dialog ---------- */
.auth-dialog {
  width: min(440px, calc(100% - 2rem));
  background: var(--bg-2);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  padding: 0;
}
.auth-dialog::backdrop { background: rgba(0, 0, 0, 0.72); backdrop-filter: blur(4px); }
.auth-dialog-inner { padding: var(--space-4); position: relative; }
.auth-close {
  position: absolute;
  top: 1rem; right: 1rem;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font-size: 1rem;
}
.auth-dialog-inner h2 { margin: 0.5rem 0 0.3rem; }
.auth-note, .auth-status, .auth-footnote { color: var(--text-2); font-size: 0.9rem; }
.auth-footnote { margin-top: var(--space-3); border-top: 1px solid var(--border); padding-top: var(--space-2); }
.auth-tabs { display: flex; gap: 0.5rem; margin: var(--space-3) 0; }
.auth-tab {
  flex: 1;
  padding: 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  letter-spacing: 0.06em;
}
.auth-tab.active { border-color: var(--accent); color: var(--text); }
.auth-form label { display: block; font-size: 0.85rem; color: var(--text-2); margin-bottom: 0.3rem; }
.auth-form input {
  width: 100%;
  padding: 0.8rem 1rem;
  margin-bottom: var(--space-2);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
}
.auth-form input:focus { outline: none; border-color: var(--accent); }
.auth-error { color: #ff8a8a; min-height: 1.4em; font-size: 0.9rem; }
.auth-success { color: var(--accent); min-height: 1.4em; font-size: 0.9rem; }
.auth-link { background: none; border: none; color: var(--accent); text-decoration: underline; cursor: pointer; font-size: 0.9rem; margin-top: 0.75rem; padding: 0; }
.auth-open-btn { max-width: 170px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mobile-menu .auth-open-btn { margin-top: 0.75rem; width: 100%; justify-content: center; }

.noscript-note {
  position: fixed;
  left: 1rem; right: 1rem; bottom: 1rem;
  z-index: 300;
  background: var(--bg-2);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 0.9rem 1.2rem;
  font-size: 0.9rem;
  color: var(--text-2);
}

/* Screen-reader-only label (chat input). */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Chat widget ---------- */
.chat-widget { position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 110; }
.chat-toggle {
  width: 58px; height: 58px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: var(--accent-ink);
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  transition: transform var(--dur-fast) var(--ease-out);
}
.chat-toggle:hover { transform: translateY(-2px) scale(1.03); }

.chat-panel {
  position: absolute;
  right: 0; bottom: 72px;
  width: min(370px, calc(100vw - 2.5rem));
  height: 480px;
  max-height: calc(100svh - 110px);
  display: flex;
  flex-direction: column;
  background: var(--bg-2);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}
.chat-panel[hidden] { display: none; }

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--border);
}
.chat-header h2 { font-size: 1.05rem; }
.chat-header p { margin: 0.2rem 0 0; color: var(--text-2); font-size: 0.82rem; }
.chat-close {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg);
  cursor: pointer;
  flex: none;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.chat-bubble {
  max-width: 85%;
  padding: 0.65rem 0.9rem;
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.5;
}
.chat-bubble p { margin: 0; }
.chat-bubble.assistant { align-self: flex-start; background: var(--bg-3); border: 1px solid var(--border); }
.chat-bubble.user { align-self: flex-end; background: rgba(110, 231, 240, 0.16); border: 1px solid rgba(110, 231, 240, 0.35); }
.chat-bubble.typing { color: var(--text-2); }

.chat-form {
  display: flex;
  gap: 0.5rem;
  padding: 0.8rem;
  border-top: 1px solid var(--border);
}
.chat-form input {
  flex: 1;
  min-width: 0;
  padding: 0.7rem 0.9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  font: inherit;
  font-size: 0.92rem;
}
.chat-form input:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; }
.chat-form button {
  border: none;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-head);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0 1.1rem;
  cursor: pointer;
}
.chat-footnote {
  margin: 0;
  padding: 0.55rem 1rem 0.7rem;
  font-size: 0.72rem;
  color: var(--text-2);
  border-top: 1px solid var(--border);
}

/* ---------- 15. Animation utilities ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

.hero-copy .eyebrow, .hero-copy .hero-title, .hero-copy .hero-lede,
.hero-copy .hero-ctas, .hero-copy .hero-tags {
  animation: hero-in var(--dur-slow) var(--ease-out) both;
}
.hero-copy .hero-title { animation-delay: 90ms; }
.hero-copy .hero-lede { animation-delay: 180ms; }
.hero-copy .hero-ctas { animation-delay: 260ms; }
.hero-copy .hero-tags { animation-delay: 340ms; }
@keyframes hero-in {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 16. Responsive breakpoints ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-height: none; aspect-ratio: 16 / 11; order: -1; }
  .hero { padding-top: calc(76px + var(--space-4)); min-height: auto; }
  .about-grid, .playground-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-meta { text-align: left; grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .nav-list, .availability { display: none; }
  .menu-toggle { display: flex; }
  .work-grid { grid-template-columns: 1fr; }
  .project-featured { grid-row: auto; }
  .project-wide { grid-column: auto; }
  .project-featured .project-visual { aspect-ratio: 16 / 10; }
  .project-wide .project-visual { aspect-ratio: 16 / 10; }
  .form-row { grid-template-columns: 1fr; }
  .service-item { grid-template-columns: 40px 1fr; }
  .service-arrow { display: none; }
  .section { padding: var(--space-8) 0; }
  .hero-title { font-size: clamp(2.6rem, 12vw, 3.6rem); }
  .hero-scroll-hint { display: none; }
}

@media (max-width: 430px) {
  .container { width: calc(100% - 2rem); }
  .process-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .contact-ctas .btn { width: 100%; justify-content: center; }
}

/* ---------- 17. Accessibility and reduced-motion styles ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .marquee-track { animation: none; }
  .availability-dot { animation: none; }
}