:root {
  --ink: #e8eef7;
  --muted: rgba(232, 238, 247, 0.68);
  --dim: rgba(232, 238, 247, 0.42);
  --accent: #2ee6a6;
  --accent-2: #5eb8ff;
  --danger: #ff6b7a;
  --glass: rgba(8, 14, 24, 0.55);
  --line: rgba(232, 238, 247, 0.12);
  --font-display: "Bricolage Grotesque", Georgia, serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.55;
  background: #05080f;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

/* ---------- Scroll-reactive stage ---------- */
.bg-stage {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  overflow: hidden;
}

.bg-layer {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.1s var(--ease);
  will-change: opacity;
}

.bg-layer.is-active {
  opacity: 1;
}

.bg-layer[data-scene="0"] {
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(46, 230, 166, 0.22), transparent 55%),
    radial-gradient(ellipse 50% 50% at 20% 80%, rgba(94, 184, 255, 0.18), transparent 50%),
    linear-gradient(160deg, #06101c 0%, #0a1628 45%, #07131f 100%);
}

.bg-layer[data-scene="1"] {
  background:
    radial-gradient(circle at 15% 30%, rgba(94, 184, 255, 0.25), transparent 40%),
    radial-gradient(circle at 85% 70%, rgba(46, 230, 166, 0.16), transparent 42%),
    linear-gradient(180deg, #081422 0%, #0c1a2e 50%, #0a1424 100%);
}

.bg-layer[data-scene="2"] {
  background:
    radial-gradient(ellipse 70% 50% at 50% 20%, rgba(46, 230, 166, 0.2), transparent 55%),
    radial-gradient(ellipse 60% 40% at 80% 90%, rgba(120, 90, 255, 0.12), transparent 50%),
    linear-gradient(200deg, #050d18 0%, #0e1f35 55%, #091624 100%);
}

.bg-layer[data-scene="3"] {
  background:
    radial-gradient(circle at 60% 40%, rgba(94, 184, 255, 0.28), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(46, 230, 166, 0.14), transparent 40%),
    linear-gradient(145deg, #071018 0%, #12263a 48%, #0a1522 100%);
}

.bg-layer[data-scene="4"] {
  background:
    radial-gradient(ellipse 90% 60% at 30% 60%, rgba(46, 230, 166, 0.18), transparent 50%),
    radial-gradient(ellipse 50% 50% at 90% 20%, rgba(94, 184, 255, 0.2), transparent 45%),
    linear-gradient(170deg, #060c16 0%, #0b1a2c 50%, #08131f 100%);
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(232, 238, 247, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 238, 247, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 20%, transparent 75%);
  opacity: 0.55;
  animation: grid-drift 28s linear infinite;
}

.scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
  opacity: 0.35;
  mix-blend-mode: multiply;
}

#neural-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.45;
}

@keyframes grid-drift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 64px 64px, 64px 64px; }
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0 max(clamp(1.25rem, 4vw, 3.5rem), calc((100% - 1100px) / 2));
  background: linear-gradient(180deg, rgba(5, 8, 15, 0.85), rgba(5, 8, 15, 0));
  backdrop-filter: blur(10px);
  transition: background 0.35s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(5, 10, 18, 0.82);
  border-bottom: 1px solid var(--line);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  z-index: 2;
}

.logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background:
    conic-gradient(from 210deg, var(--accent), var(--accent-2), var(--accent));
  box-shadow: 0 0 24px rgba(46, 230, 166, 0.35);
  position: relative;
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 4px;
  background: #071018;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--ink);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 10px;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  z-index: 2;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s var(--ease), opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.75rem 1.4rem;
  border-radius: 12px;
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--accent), #1bbf8a);
  color: #04140f;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), filter 0.2s;
  box-shadow: 0 10px 30px rgba(46, 230, 166, 0.22);
}

.btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.btn-sm {
  min-height: 40px;
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
  box-shadow: none;
}

.btn-ghost:hover {
  border-color: rgba(46, 230, 166, 0.45);
  background: rgba(46, 230, 166, 0.06);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding:
    calc(var(--header-h) + 2rem)
    clamp(1.25rem, 4vw, 3.5rem)
    clamp(3.5rem, 8vh, 5.5rem);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(1100px, 100%);
  animation: rise 1s var(--ease) both;
}

.hero-content > * {
  max-width: 640px;
}

.brand-signal {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9vw, 6.2rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.92;
  background: linear-gradient(120deg, #fff 8%, var(--accent) 52%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.6vw, 1.95rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--ink);
}

.lede {
  margin: 0 0 1.75rem;
  font-size: 1.05rem;
  color: var(--muted);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  pointer-events: none;
  animation: float-in 1.2s 0.1s var(--ease) both;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 50% at 68% 42%, rgba(46, 230, 166, 0.14), transparent 60%),
    linear-gradient(90deg, rgba(5, 8, 15, 0.72) 0%, rgba(5, 8, 15, 0.2) 48%, rgba(5, 8, 15, 0.35) 100%),
    linear-gradient(180deg, transparent 40%, rgba(5, 8, 15, 0.75) 100%);
}

.robot-core {
  position: relative;
  width: min(520px, 58vw);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  margin-left: 18%;
  margin-top: -4%;
}

.orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(94, 184, 255, 0.22);
}

.orbit-1 {
  inset: -8%;
  animation: spin 40s linear infinite;
}

.orbit-2 {
  inset: -18%;
  border-color: rgba(46, 230, 166, 0.14);
  animation: spin 55s linear infinite reverse;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(46, 230, 166, 0.28);
}

.ring-a {
  inset: 0;
  animation: spin 22s linear infinite;
  border-top-color: var(--accent);
  border-right-color: transparent;
}

.ring-b {
  inset: 12%;
  animation: spin 14s linear infinite reverse;
  border-bottom-color: var(--accent-2);
  border-left-color: transparent;
}

.ring-c {
  inset: 24%;
  animation: pulse-ring 3.2s ease-in-out infinite;
  box-shadow: inset 0 0 40px rgba(94, 184, 255, 0.12);
}

.core-face {
  width: 42%;
  aspect-ratio: 1;
  border-radius: 30%;
  background: linear-gradient(160deg, rgba(18, 36, 56, 0.95), rgba(8, 16, 28, 0.98));
  border: 1px solid rgba(232, 238, 247, 0.14);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-content: center;
  gap: 12% 16%;
  padding: 22% 18% 20%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45), 0 0 40px rgba(46, 230, 166, 0.15);
  animation: face-glow 4s ease-in-out infinite;
}

.eye {
  width: 22px;
  height: 22px;
  justify-self: center;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #b8ffe8, var(--accent) 55%, #0a3d2e);
  box-shadow: 0 0 16px rgba(46, 230, 166, 0.75);
  animation: blink 5.5s infinite;
  transform-origin: center;
}

.mouth {
  grid-column: 1 / -1;
  height: 7px;
  width: 55%;
  justify-self: center;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--accent-2), transparent);
  opacity: 0.9;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse-ring {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.04); opacity: 1; }
}

@keyframes face-glow {
  0%, 100% { box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45), 0 0 40px rgba(46, 230, 166, 0.15); }
  50% { box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45), 0 0 55px rgba(94, 184, 255, 0.28); }
}

@keyframes blink {
  0%, 46%, 50%, 100% { transform: scaleY(1); }
  48% { transform: scaleY(0.12); }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes float-in {
  from { opacity: 0; transform: scale(0.92) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* ---------- Sections ---------- */
.section {
  position: relative;
  padding: clamp(5rem, 10vh, 8rem) clamp(1.25rem, 4vw, 3.5rem);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section > * {
  width: min(1100px, 100%);
}

.section-head {
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.section-head p {
  max-width: 52ch;
}

.section-head h2,
.exp-panel h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.section-head p,
.exp-panel > p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Services — list, not cards */
.service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.service-list li {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 1.25rem;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s, padding-left 0.3s var(--ease);
}

.service-list li:hover {
  padding-left: 0.5rem;
  background: linear-gradient(90deg, rgba(46, 230, 166, 0.06), transparent 60%);
}

.svc-index {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  padding-top: 0.2rem;
}

.service-list h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.service-list p {
  margin: 0;
  color: var(--muted);
  max-width: 52ch;
}

/* Experience */
.experience {
  display: flex;
  justify-content: center;
}

.exp-panel {
  max-width: 720px;
  text-align: center;
}

.exp-years {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.5rem, 10vw, 6.5rem);
  letter-spacing: -0.05em;
  line-height: 0.9;
  color: var(--ink);
}

.exp-years span {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.exp-panel h2 {
  margin-bottom: 1rem;
}

.exp-panel > p {
  margin: 0 auto 1.75rem;
}

.exp-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.5rem;
  color: var(--dim);
  font-size: 0.95rem;
}

.exp-points li {
  position: relative;
  padding-left: 1rem;
}

.exp-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(46, 230, 166, 0.6);
}

/* Platforms */
.platform-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

.platform-strip article {
  padding-right: 1rem;
}

.platform-strip h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.platform-strip p {
  margin: 0;
  color: var(--muted);
}

/* Applications — industry verticals */
.app-verticals {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.75rem, 4vw, 2.75rem) clamp(1.5rem, 3vw, 2.5rem);
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

.app-verticals article {
  padding-right: 0.5rem;
}

.app-label {
  display: block;
  margin-bottom: 0.85rem;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.app-verticals h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.app-verticals p {
  margin: 0 0 1.15rem;
  color: var(--muted);
  max-width: 42ch;
  font-size: 0.98rem;
}

.tag-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.35rem;
}

.tag-list li {
  font-size: 0.9rem;
  color: var(--dim);
  letter-spacing: 0.02em;
}

.tag-list li:not(:last-child)::after {
  content: "·";
  margin-left: 0.35rem;
  color: var(--line);
}

/* Contact — form is the interactive card container */
.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.meta-label {
  margin: 0 0 0.4rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--dim);
}

.meta-email {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent);
  margin-bottom: 1rem;
  transition: filter 0.2s;
}

.meta-email:hover {
  filter: brightness(1.15);
}

.meta-note {
  margin: 0;
  color: var(--muted);
  max-width: 32ch;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.1rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(8, 14, 24, 0.55);
  backdrop-filter: blur(14px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.contact-form label.full,
.contact-form .btn,
.contact-form .form-status {
  grid-column: 1 / -1;
}

.contact-form label span {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--dim);
  letter-spacing: 0.02em;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(5, 10, 18, 0.65);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: rgba(46, 230, 166, 0.55);
  box-shadow: 0 0 0 3px rgba(46, 230, 166, 0.12);
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 12px) 50%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.form-status {
  margin: 0;
  min-height: 1.25em;
  font-size: 0.92rem;
  color: var(--muted);
}

.form-status.is-success {
  color: var(--accent);
}

.form-status.is-error {
  color: var(--danger);
}

/* Footer */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1100px, calc(100% - clamp(2.5rem, 8vw, 7rem)));
  margin-inline: auto;
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 0.9rem;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
}

.footer-brand .logo-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
}

.footer-brand .logo-mark::after {
  inset: 5px;
}

.site-footer a:hover {
  color: var(--accent);
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero {
    min-height: 100svh;
    align-items: flex-end;
    padding-top: calc(var(--header-h) + 1.5rem);
    padding-bottom: 3rem;
  }

  .robot-core {
    width: min(340px, 78vw);
    margin-left: 0;
    margin-top: -18%;
  }

  .brand-signal {
    font-size: clamp(2.8rem, 14vw, 4rem);
  }

  .platform-strip {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .app-verticals {
    grid-template-columns: 1fr 1fr;
    gap: 2rem 1.5rem;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .site-header .btn-sm {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: 1.5rem;
    background: rgba(5, 10, 18, 0.96);
    backdrop-filter: blur(16px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease);
  }

  .nav.is-open {
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 650;
    color: var(--ink);
  }

  .service-list li {
    grid-template-columns: 48px 1fr;
    gap: 0.85rem;
  }

  .app-verticals {
    grid-template-columns: 1fr;
  }

  .contact-form {
    grid-template-columns: 1fr;
    padding: 1.15rem;
  }
}

@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;
  }
  .grid-overlay { animation: none; }
}