/* ============================================
   ISO SERVICES — SpaceX-inspired design system
   ============================================ */

:root {
  --black: #000000;
  --white: #f0f0fa;
  --ghost-bg: rgba(240, 240, 250, 0.1);
  --ghost-border: rgba(240, 240, 250, 0.35);
  --overlay: rgba(0, 0, 0, 0.55);
  --overlay-heavy: rgba(0, 0, 0, 0.72);
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --tracking-wide: 0.12em;
  --tracking-wider: 0.18em;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font);
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---- NAV ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 48px;
  transition: background 0.4s ease, padding 0.4s ease;
}

.nav.scrolled {
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 16px 48px;
  border-bottom: 1px solid rgba(240, 240, 250, 0.08);
}

.nav-logo {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: var(--tracking-wider);
  color: var(--white);
}

.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}

.nav-links a {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  color: var(--white);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.2s;
  text-transform: uppercase;
}

.nav-links a:hover {
  opacity: 1;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--white);
  transition: all 0.3s ease;
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ---- SCENE ---- */
.scene {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
}

.scene-dark {
  background: #080808;
  background-image: none !important;
}

.overlay {
  position: absolute;
  inset: 0;
  background: var(--overlay);
}

.overlay-left {
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.78) 0%,
    rgba(0, 0, 0, 0.55) 50%,
    rgba(0, 0, 0, 0.2) 100%
  );
}

.overlay-heavy {
  background: var(--overlay-heavy);
}

/* ---- CONTENT ---- */
.scene-content {
  position: relative;
  z-index: 2;
  padding: 120px 80px 80px;
  max-width: 900px;
}

.scene-content.full-width {
  max-width: 100%;
  width: 100%;
  padding: 120px 80px;
}

.scene-content.centered-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.hero-content {
  padding-top: 140px;
}

/* ---- TYPOGRAPHY ---- */
.label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--white);
  opacity: 0.55;
  margin-bottom: 24px;
}

.label.centered {
  text-align: center;
}

.display {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.0;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 28px;
}

.display-sm {
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 28px;
}

.display-sm.centered {
  text-align: center;
}

.body-text {
  font-size: 16px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--white);
  opacity: 0.75;
  margin-bottom: 40px;
  letter-spacing: 0.01em;
}

.body-text.max-w {
  max-width: 520px;
}

.body-text.centered-text {
  text-align: center;
  margin: 0 auto 40px;
}

/* ---- GHOST BUTTON ---- */
.ghost-btn {
  display: inline-block;
  padding: 14px 32px;
  background: var(--ghost-bg);
  border: 1px solid var(--ghost-border);
  border-radius: 32px;
  color: var(--white);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  text-decoration: none;
  transition: background 0.25s ease, border-color 0.25s ease;
  backdrop-filter: blur(8px);
}

.ghost-btn:hover {
  background: rgba(240, 240, 250, 0.2);
  border-color: rgba(240, 240, 250, 0.6);
}

/* ---- SCROLL INDICATOR ---- */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.4;
}

.scroll-indicator span {
  display: block;
  width: 1px;
  height: 48px;
  background: var(--white);
  animation: scrollPulse 2s ease-in-out infinite;
}

.scroll-indicator p {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--white);
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.2; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ---- DIVISIONS GRID ---- */
.divisions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(240, 240, 250, 0.08);
  border: 1px solid rgba(240, 240, 250, 0.08);
  margin-top: 64px;
}

.division-card {
  background: #080808;
  padding: 48px 36px;
  transition: background 0.3s ease;
}

.division-card:hover {
  background: #111111;
}

.division-num {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  color: var(--white);
  opacity: 0.3;
  margin-bottom: 20px;
}

.division-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.3;
}

.division-body {
  font-size: 13px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--white);
  opacity: 0.6;
}

/* ---- PRODUCT PILLS ---- */
.product-pills {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.pill {
  padding: 10px 24px;
  border: 1px solid var(--ghost-border);
  border-radius: 32px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--white);
  opacity: 0.7;
}

/* ---- FOOTER ---- */
.footer {
  background: #000;
  border-top: 1px solid rgba(240, 240, 250, 0.08);
  padding: 32px 80px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-logo {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--tracking-wider);
  color: var(--white);
  text-transform: uppercase;
}

.footer-copy {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--white);
  opacity: 0.35;
  text-transform: uppercase;
}

.footer-right {
  display: flex;
  gap: 32px;
}

.footer-right a {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--white);
  opacity: 0.45;
  text-decoration: none;
  transition: opacity 0.2s;
}

.footer-right a:hover {
  opacity: 1;
}

/* ---- FADE-IN ANIMATION ---- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 960px) {
  .nav {
    padding: 20px 32px;
  }

  .nav.scrolled {
    padding: 14px 32px;
  }

  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 16px;
  }

  .nav-hamburger {
    display: flex;
    z-index: 101;
  }

  .scene-content {
    padding: 100px 32px 60px;
  }

  .scene-content.full-width {
    padding: 100px 32px;
  }

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

  .footer {
    padding: 32px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 24px;
    align-items: flex-start;
  }

  .scene {
    background-attachment: scroll;
  }
}

@media (max-width: 600px) {
  .divisions-grid {
    grid-template-columns: 1fr;
  }

  .product-pills {
    flex-direction: column;
  }

  .display {
    font-size: 36px;
  }

  .display-sm {
    font-size: 28px;
  }
}