/* ─── Variables ─────────────────────────────────────────── */
:root {
  --clr-dark:       #0A0F1E;
  --clr-dark-2:     #111827;
  --clr-accent:     #2563EB;
  --clr-accent-hov: #1D4ED8;
  --clr-body:       #374151;
  --clr-muted:      #6B7280;
  --clr-border:     #E5E7EB;
  --clr-light-bg:   #F5F7FA;
  --clr-white:      #FFFFFF;

  --font:           'Inter', system-ui, sans-serif;

  --sz-xs:  0.75rem;
  --sz-sm:  0.875rem;
  --sz-md:  1rem;
  --sz-lg:  1.125rem;
  --sz-xl:  1.25rem;
  --sz-2xl: 1.5rem;
  --sz-3xl: 2rem;
  --sz-4xl: 2.75rem;
  --sz-5xl: 3.75rem;

  --radius: 6px;
  --transition: 180ms ease;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);
}

/* ─── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: var(--sz-md);
  color: var(--clr-body);
  background: var(--clr-white);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ─── Container ─────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1100px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

/* ─── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-block;
  font-family: var(--font);
  font-size: var(--sz-sm);
  font-weight: 600;
  letter-spacing: .02em;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn--light {
  background: var(--clr-white);
  color: var(--clr-dark);
  border-color: var(--clr-white);
}
.btn--light:hover {
  background: transparent;
  color: var(--clr-white);
}

.btn--dark {
  background: var(--clr-dark-2);
  color: var(--clr-white);
  border-color: var(--clr-dark-2);
}
.btn--dark:hover {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
}

.btn--dark:disabled {
  opacity: .6;
  cursor: not-allowed;
}

/* ─── Section helpers ───────────────────────────────────── */
.section-title {
  font-size: clamp(var(--sz-2xl), 3.5vw, var(--sz-4xl));
  font-weight: 700;
  color: var(--clr-dark-2);
  line-height: 1.15;
  letter-spacing: -.02em;
}

.section-sub {
  margin-top: .75rem;
  font-size: var(--sz-lg);
  color: var(--clr-muted);
  max-width: 52ch;
}

/* ─── Nav ───────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: var(--sz-xl);
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--clr-dark);
}

.nav__logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  flex-shrink: 0;
}

.nav__cta {
  font-size: var(--sz-sm);
  font-weight: 600;
  color: var(--clr-accent);
  transition: color var(--transition);
}
.nav__cta:hover { color: var(--clr-accent-hov); }

/* ─── Hero ──────────────────────────────────────────────── */
.hero {
  background: var(--clr-dark);
  color: var(--clr-white);
  padding-block: clamp(5rem, 14vw, 9rem);
  position: relative;
  overflow: hidden;
}

/* neural network canvas */
.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* radial glow */
.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  left: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse at center, rgba(37,99,235,.18) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  display: inline-block;
  font-size: var(--sz-xs);
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: rgba(37,99,235,.12);
  border: 1px solid rgba(37,99,235,.3);
  padding: .3rem .8rem;
  border-radius: 100px;
  margin-bottom: 1.75rem;
}

.hero__headline {
  font-size: clamp(var(--sz-4xl), 7vw, var(--sz-5xl));
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.08;
  margin-bottom: 1.5rem;
}

.hero__sub {
  font-size: clamp(var(--sz-md), 2vw, var(--sz-xl));
  color: rgba(255,255,255,.68);
  max-width: 55ch;
  line-height: 1.65;
  margin-bottom: 2.5rem;
}

/* ─── Technology Partners ───────────────────────────────── */
.partners {
  background: var(--clr-white);
  border-bottom: 1px solid var(--clr-border);
  padding-block: 2.25rem;
}

.partners__label {
  font-size: var(--sz-sm);
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--clr-muted);
  text-align: center;
  margin-bottom: 1.75rem;
}

.partners__logos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: center;
  justify-items: center;
  gap: 1.5rem 2rem;
}

.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 200px;
  height: 64px;
}

.partner-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
  filter: grayscale(25%);
  opacity: .8;
  transition: opacity var(--transition), filter var(--transition);
}
.partner-logo img:hover {
  filter: grayscale(0%);
  opacity: 1;
}

/* Cognex and Keyence PNGs have large internal padding — scale up to match visual weight */
.partner-logo--wide {
  max-width: 220px;
}
.partner-logo--wide img {
  transform: scale(1.45);
}

/* ─── Application Showcase ──────────────────────────────── */
.showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: clamp(280px, 36vw, 480px);
}

.showcase__panel {
  position: relative;
  overflow: hidden;
}

.showcase__panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 500ms ease;
}

.showcase__panel:hover img {
  transform: scale(1.05);
}

.showcase__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(8, 12, 28, 0.82) 0%,
    rgba(8, 12, 28, 0.20) 50%,
    transparent 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(1.25rem, 3vw, 2rem);
  transition: background var(--transition);
}

.showcase__panel:hover .showcase__overlay {
  background: linear-gradient(
    to top,
    rgba(8, 12, 28, 0.9) 0%,
    rgba(8, 12, 28, 0.3) 55%,
    transparent 100%
  );
}

.showcase__tag {
  display: inline-block;
  font-size: var(--sz-xs);
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: .5rem;
}

.showcase__caption {
  font-size: clamp(var(--sz-md), 2vw, var(--sz-xl));
  font-weight: 600;
  color: var(--clr-white);
  line-height: 1.25;
  max-width: 28ch;
}

/* divider line between the two panels */
.showcase__panel:first-child {
  border-right: 1px solid rgba(255,255,255,.12);
}

@media (max-width: 600px) {
  .showcase {
    grid-template-columns: 1fr;
    height: auto;
  }
  .showcase__panel {
    height: clamp(220px, 55vw, 320px);
  }
  .showcase__panel:first-child {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,.12);
  }
}

/* ─── Services ──────────────────────────────────────────── */
.services {
  padding-block: clamp(4rem, 10vw, 7rem);
  background: var(--clr-white);
}

.section-header {
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: calc(var(--radius) * 2);
  padding: 2rem 1.75rem;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: rgba(37,99,235,.25);
}

.service-card__mark {
  font-size: var(--sz-xs);
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--clr-accent);
  margin-bottom: 1.25rem;
}

.service-card__title {
  font-size: var(--sz-lg);
  font-weight: 600;
  color: var(--clr-dark-2);
  letter-spacing: -.01em;
  margin-bottom: .6rem;
}

.service-card__body {
  font-size: var(--sz-sm);
  color: var(--clr-muted);
  line-height: 1.65;
}

/* ─── Experience callout ────────────────────────────────── */
.experience-callout {
  background: rgba(37,99,235,.06);
  border-left: 3px solid var(--clr-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.1rem 1.5rem;
  margin-bottom: 2.5rem;
}
.experience-callout p {
  font-size: var(--sz-md);
  color: var(--clr-dark-2);
  line-height: 1.65;
  max-width: 80ch;
}

/* ─── Industry 4.0 ──────────────────────────────────────── */
.industry {
  background: var(--clr-dark);
  padding-block: clamp(4rem, 10vw, 7rem);
}

.industry .section-title { color: var(--clr-white); }
.industry .section-sub   { color: rgba(255,255,255,.55); }

.industry__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: clamp(2.5rem, 6vw, 4rem);
}

.industry-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: calc(var(--radius) * 2);
  padding: 2rem 1.75rem;
  transition: background var(--transition), border-color var(--transition);
}
.industry-card:hover {
  background: rgba(37,99,235,.14);
  border-color: rgba(37,99,235,.4);
}

.industry-card__title {
  font-size: var(--sz-lg);
  font-weight: 600;
  color: var(--clr-white);
  letter-spacing: -.01em;
  margin-bottom: .65rem;
}

.industry-card__body {
  font-size: var(--sz-sm);
  color: rgba(255,255,255,.55);
  line-height: 1.65;
}

/* ─── Certifications ────────────────────────────────────── */
.certs {
  background: var(--clr-white);
  padding-block: clamp(4rem, 10vw, 7rem);
  border-top: 1px solid var(--clr-border);
}

.certs__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: clamp(2.5rem, 6vw, 4rem);
  max-width: 700px;
}

.cert-card {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  border: 1px solid var(--clr-border);
  border-radius: calc(var(--radius) * 2);
  padding: 1.5rem 1.75rem;
  background: var(--clr-white);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.cert-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(37,99,235,.2);
}

.cert-card__logo {
  width: 72px;
  height: 72px;
  object-fit: contain;
  flex-shrink: 0;
}

.cert-card__name {
  font-size: var(--sz-xs);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--clr-muted);
  margin-bottom: .2rem;
}

.cert-card__level {
  font-size: var(--sz-xl);
  font-weight: 700;
  color: var(--clr-dark-2);
  letter-spacing: -.02em;
  line-height: 1.1;
  margin-bottom: .4rem;
}

.cert-card__org {
  font-size: var(--sz-xs);
  color: var(--clr-muted);
  line-height: 1.4;
}

/* ─── Contact ───────────────────────────────────────────── */
.contact {
  background: var(--clr-light-bg);
  padding-block: clamp(4rem, 10vw, 7rem);
}

.contact__header {
  margin-bottom: clamp(2.5rem, 6vw, 3.5rem);
}

.contact__form {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: calc(var(--radius) * 2);
  padding: clamp(2rem, 5vw, 3rem);
  max-width: 780px;
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-bottom: 1.25rem;
}

.form-label {
  font-size: var(--sz-sm);
  font-weight: 500;
  color: var(--clr-dark-2);
}

.req { color: var(--clr-accent); }

.form-input {
  font-family: var(--font);
  font-size: var(--sz-sm);
  color: var(--clr-dark-2);
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: .65rem .875rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-input::placeholder { color: #9CA3AF; }
.form-input:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.form-input.invalid {
  border-color: #EF4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,.1);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .75rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-textarea {
  min-height: 130px;
  resize: vertical;
  line-height: 1.6;
}

.form-footer {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: .25rem;
}

.form-notice {
  font-size: var(--sz-xs);
  color: var(--clr-muted);
}

.form-feedback {
  margin-top: 1.25rem;
  padding: .875rem 1.125rem;
  border-radius: var(--radius);
  font-size: var(--sz-sm);
  font-weight: 500;
}
.form-feedback--success {
  background: #ECFDF5;
  color: #065F46;
  border: 1px solid #A7F3D0;
}
.form-feedback--error {
  background: #FEF2F2;
  color: #991B1B;
  border: 1px solid #FECACA;
}

/* ─── Footer ────────────────────────────────────────────── */
.footer {
  background: var(--clr-dark);
  padding-block: 2.5rem;
}

.footer__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer__inner .nav__logo { color: var(--clr-white); font-size: var(--sz-lg); }

.footer__tagline {
  font-size: var(--sz-sm);
  color: rgba(255,255,255,.4);
}

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  .form-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__headline { letter-spacing: -.025em; }
}