.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent);
  z-index: var(--z-progress);
  transition: width 80ms linear;
  box-shadow: 0 0 10px var(--accent-glow);
}

.vignette {
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 38%, rgba(4, 10, 20, 0.68) 100%);
  z-index: var(--z-vignette);
  pointer-events: none;
}

.canvas-container {
  position: fixed;
  inset: 0;
  z-index: var(--z-canvas);
  overflow: hidden;
}

#sceneCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: 0.85rem 0;
  background: rgba(8, 18, 36, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  text-decoration: none;
}

.nav__logo-icon {
  font-size: 1.35rem;
  color: var(--accent);
}

.nav__logo-text {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-primary);
}

.nav__logo-text em {
  color: var(--accent);
  font-style: normal;
}

.nav__links {
  display: flex;
  gap: var(--space-md);
  margin-left: auto;
}

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.nav__link:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

.nav__cta {
  margin-left: var(--space-sm);
  flex-shrink: 0;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 26px;
  padding: 4px;
  margin-left: auto;
  background: transparent;
  border: none;
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-base) var(--ease-out);
}

/* ── SECTIONS ── */
.section {
  position: relative;
  z-index: var(--z-content);
  padding: var(--space-xxl) 0;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--space-xxl) + 80px);
  padding-bottom: var(--space-xxl);
}

.section--services,
.section--panels,
.section--faq {
  background: rgba(6, 14, 28, 0.62);
}

.section--lighting,
.section--brands {
  background: rgba(10, 20, 38, 0.68);
}

.section--split {
  background: rgba(5, 12, 24, 0.72);
}

.section--cta {
  background: rgba(14, 42, 71, 0.7);
}

.section-header {
  max-width: 680px;
  margin-bottom: var(--space-xl);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.section-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.75;
}

.kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

/* ── HERO ── */
.hero__inner {
  max-width: 760px;
}

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.32rem 0.78rem;
  margin-bottom: var(--space-md);
  background: var(--accent-dim);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5.5vw, 4.8rem);
  font-weight: 700;
  line-height: 1.08;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.hero__lead {
  font-size: clamp(1rem, 1.8vw, 1.18rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: var(--space-lg);
  line-height: 1.75;
}

.hero__form {
  margin-bottom: var(--space-lg);
}

.form-group {
  display: flex;
  gap: var(--space-xs);
  max-width: 520px;
}

.form-hint {
  margin-top: var(--space-xs);
  font-family: var(--font-mono);
  font-size: 0.63rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.meta-icon {
  color: var(--accent);
  font-size: 0.88rem;
}

.meta-text {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.scroll-hint {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-out);
}

.scroll-hint.is-visible {
  opacity: 1;
}

.scroll-hint__label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.scroll-hint__arrow {
  font-size: 1.15rem;
  color: var(--accent);
  animation: bounce 2s ease-in-out infinite;
}

/* ── SERVICES ── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

/* ── SPLIT ── */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.split-text .section-title {
  margin-top: var(--space-xs);
}

.split-text p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.75;
}

.split-visual__card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.split-stat {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem;
}

.split-stat:first-child { padding-top: 0; }
.split-stat:last-child  { border-bottom: none; padding-bottom: 0; }

.split-stat__number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.split-stat__unit {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}

.split-stat__label {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  flex-basis: 100%;
}

/* ── BENEFITS ── */
.benefits-list {
  max-width: 820px;
  display: flex;
  flex-direction: column;
}

.benefit-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-color);
  align-items: flex-start;
}

.benefit-item:last-child { border-bottom: none; }

.benefit-icon {
  font-size: 1.15rem;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 0.15rem;
  width: 1.4rem;
  text-align: center;
}

.benefit-title {
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.benefit-content p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.72;
}

/* ── LEAD MAGNET ── */
.lead-magnet {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-xl);
  align-items: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.lead-magnet__content .section-title {
  margin-top: var(--space-xs);
}

.lead-magnet__content p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.75;
  margin-bottom: var(--space-md);
}

.brand-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

/* ── CSS 3D PANEL ── */
.panel-3d {
  perspective: 900px;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-lg) var(--space-md);
}

.panel-3d__frame {
  width: 200px;
  height: 280px;
  background: linear-gradient(140deg, #182d52 0%, #0c1c38 100%);
  border: 3px solid #7a8fa8;
  border-radius: var(--radius-md);
  transform: rotateY(-22deg) rotateX(8deg);
  transform-style: preserve-3d;
  position: relative;
  box-shadow:
    14px 18px 44px rgba(0, 0, 0, 0.72),
    inset 0 0 0 1px rgba(255,255,255,0.05);
  animation: panelFloat 7s ease-in-out infinite;
}

.panel-3d__cells {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 5px;
  padding: 12px;
  height: 100%;
}

.panel-3d__cell {
  background: linear-gradient(135deg, #183a72 0%, #0e2554 50%, #1a4478 100%);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.panel-3d__cell::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(242, 201, 76, 0.09) 0%, transparent 55%);
}

.panel-3d__label {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.38);
  text-transform: uppercase;
  white-space: nowrap;
}

/* ── CTA ── */
.cta-block {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}

.cta-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.cta-lead {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto var(--space-xl);
  line-height: 1.75;
}

.cta-form {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.cta-form__row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.cta-form__group {
  display: flex;
  flex-direction: column;
}

.cta-form .btn--large {
  align-self: center;
  margin-top: var(--space-sm);
}

/* ── FOOTER ── */
.footer {
  position: relative;
  z-index: var(--z-content);
  background: rgba(4, 10, 22, 0.94);
  border-top: 1px solid var(--border-color);
  padding: var(--space-xl) 0 var(--space-md);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--border-color);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.footer__logo-icon {
  color: var(--accent);
  font-size: 1.25rem;
}

.footer__tagline {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.72;
  margin-bottom: var(--space-md);
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.footer__contact-link {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  text-transform: uppercase;
  transition: color var(--duration-fast) var(--ease-out);
}

.footer__contact-link:hover {
  color: var(--accent);
}

.footer__col-title {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__link {
  font-size: 0.84rem;
  color: var(--text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer__link:hover {
  color: var(--text-secondary);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer__copy {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.footer__legal {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .container {
    padding: 0 var(--space-md);
  }

  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(4, 12, 28, 0.98);
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-color);
    gap: var(--space-sm);
    backdrop-filter: blur(20px);
  }

  .nav__links.is-open {
    display: flex;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__cta {
    display: none;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .split-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .lead-magnet {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .lead-magnet__visual {
    order: -1;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }

  .footer__col--brand {
    grid-column: 1 / -1;
  }

  .cta-form__row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 500px) {
  :root {
    --space-xxl: 5rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .form-group {
    flex-direction: column;
  }

  .hero__meta {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .panel-3d__frame {
    width: 160px;
    height: 220px;
  }
}