:root {
  /* Core color system chosen for aerospace/defense aesthetic */
  --color-bg: #050814;
  --color-bg-elevated: #0a0e1a;
  --color-bg-contrast: #111729;
  --color-primary: #1e3a5f;
  --color-primary-soft: #2a4a75;
  --color-accent: #c9a84c;
  --color-accent-soft: rgba(201, 168, 76, 0.3);
  --color-border-subtle: rgba(255, 255, 255, 0.08);
  --color-text: #f5f7fb;
  --color-text-muted: #a5b0c5;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.55);

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-lg: 18px;
  --radius-pill: 999px;

  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top, #111729 0, #050814 55%);
  color: var(--color-text);
}

body,
input,
button,
textarea {
  font-size: 16px;
}

.site {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(5, 8, 20, 0.96),
    rgba(5, 8, 20, 0.92),
    transparent
  );
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.nav__logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 30% 70% 65% 35%;
  background: conic-gradient(
    from 210deg,
    var(--color-accent) 0,
    var(--color-accent-soft) 18%,
    var(--color-primary-soft) 40%,
    #020308 100%
  );
  box-shadow: 0 0 18px rgba(201, 168, 76, 0.4);
}

.nav__wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nav__title {
  font-family: "Space Grotesk", system-ui, sans-serif;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.nav__subtitle {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.18em;
}

.nav__links-wrapper {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  position: relative;
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-bottom: 0.15rem;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(
    to right,
    var(--color-accent),
    var(--color-primary-soft)
  );
  transition: width 180ms ease-out;
}

.nav__link:focus-visible,
.nav__link:hover {
  color: var(--color-text);
}

.nav__link:hover::after,
.nav__link:focus-visible::after {
  width: 100%;
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-accent-soft);
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: radial-gradient(
    circle at left,
    rgba(201, 168, 76, 0.1),
    transparent 70%
  );
}

.nav__cta:hover,
.nav__cta:focus-visible {
  border-color: var(--color-accent);
  box-shadow: 0 0 18px rgba(201, 168, 76, 0.35);
}

.nav__toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-pill);
  padding: 0.35rem 0.55rem;
  cursor: pointer;
}

.nav__toggle-line {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--color-text);
}

.nav__toggle-line + .nav__toggle-line {
  margin-top: 4px;
}

/* Hero */

.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  padding: 4rem 0 4.5rem;
  overflow: hidden;
}

.hero__background {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__gradient-layer {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(circle at top, rgba(90, 128, 255, 0.18), transparent 55%),
    radial-gradient(circle at 120% 10%, rgba(201, 168, 76, 0.2), transparent 55%),
    radial-gradient(circle at -20% 20%, rgba(22, 57, 125, 0.4), transparent 60%);
  opacity: 0.9;
}

.hero__orbit {
  position: absolute;
  border-radius: 999px;
  border: 1px dashed rgba(173, 190, 255, 0.26);
  transform-origin: center;
  animation: orbit-rotate 32s linear infinite;
}

.hero__orbit--outer {
  width: 680px;
  height: 260px;
  top: 16%;
  right: -20%;
}

.hero__orbit--inner {
  width: 460px;
  height: 180px;
  top: 26%;
  right: -10%;
  animation-duration: 26s;
}

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

.hero__text {
  max-width: 640px;
}

.hero__eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.9rem;
}

.hero__heading {
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: clamp(2.3rem, 2.6vw + 1.2rem, 3.2rem);
  line-height: 1.06;
  margin: 0 0 1rem;
}

.hero__subheading {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 36rem;
  margin-bottom: 1.75rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.9rem;
}

.hero__highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.hero__highlight {
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(
    135deg,
    rgba(21, 34, 83, 0.9),
    rgba(20, 31, 70, 0.96)
  );
  border: 1px solid rgba(158, 190, 255, 0.32);
  backdrop-filter: blur(12px);
}

.hero__highlight dt {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: 0.15rem;
}

.hero__highlight dd {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  transition:
    transform 130ms ease-out,
    box-shadow 130ms ease-out,
    background 130ms ease-out,
    color 130ms ease-out;
}

.btn--primary {
  background: linear-gradient(
    135deg,
    var(--color-accent),
    #f7e3a3
  );
  color: #14151f;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.7);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 22px 55px rgba(0, 0, 0, 0.8);
}

.btn--ghost {
  background: rgba(9, 15, 36, 0.7);
  color: var(--color-text);
  border: 1px solid rgba(167, 192, 255, 0.4);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--color-accent);
  background: rgba(10, 16, 40, 0.92);
}

/* Generic section styling */

.section {
  padding: 4.5rem 0;
}

.section--contrast {
  background: radial-gradient(circle at top left, #131a33 0, #050814 55%);
}

.section__layout {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.section__header {
  max-width: 680px;
}

.section__eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.7rem;
}

.section__title {
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: clamp(1.6rem, 1.2vw + 1.1rem, 2rem);
  margin: 0 0 0.75rem;
}

.section__description {
  margin: 0;
  color: var(--color-text-muted);
  max-width: 32rem;
  line-height: 1.6;
}

.section__content {
  display: grid;
  gap: 1.5rem;
}

.section__content--two-column {
  grid-template-columns: minmax(0, 1fr);
}

.section__content--contact {
  max-width: 460px;
}

.section__layout--contact {
  align-items: flex-start;
}

/* About cards */

.about__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.card {
  background: linear-gradient(
    145deg,
    rgba(8, 13, 33, 0.98),
    rgba(9, 17, 42, 0.96)
  );
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.4rem 1.3rem;
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-soft);
}

.card__title {
  margin: 0 0 0.45rem;
  font-size: 1.02rem;
}

.card__body {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.card--tech {
  border-top: 1px solid rgba(177, 198, 255, 0.5);
}

.card__list {
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.card__list li + li {
  margin-top: 0.3rem;
}

/* Technology grid */

.technology__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

/* Contact section */

.contact__details {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
  margin: 1.6rem 0 0;
  padding: 0;
}

.contact__detail {
  padding: 0.75rem 0.8rem;
  border-radius: var(--radius-sm);
  background: rgba(9, 14, 32, 0.9);
  border: 1px solid var(--color-border-subtle);
}

.contact__detail dt {
  margin: 0 0 0.25rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.contact__detail dd {
  margin: 0;
  font-size: 0.9rem;
}

.contact-form {
  background: radial-gradient(circle at top, #141c3d 0, #070b18 70%);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.5rem 1.5rem;
  border: 1px solid rgba(179, 199, 255, 0.3);
  box-shadow: var(--shadow-soft);
}

.contact-form__field {
  margin-bottom: 0.95rem;
}

.contact-form label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.25rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.6rem 0.7rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(153, 178, 237, 0.6);
  background: rgba(2, 5, 18, 0.9);
  color: var(--color-text);
  outline: none;
}

.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px rgba(201, 168, 76, 0.5);
}

.contact-form__helper {
  margin: 0 0 0.8rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Footer */

.site-footer {
  padding: 1.4rem 0 2.1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: radial-gradient(circle at top, #121832 0, #050814 65%);
  margin-top: auto;
}

.site-footer__content {
  text-align: center;
}

.site-footer__brand {
  font-family: "Space Grotesk", system-ui, sans-serif;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.74rem;
  margin: 0 0 0.2rem;
}

.site-footer__copy {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.site-footer__tagline {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Utility focus outline */

a:focus-visible,
button:focus-visible {
  outline: 2px solid rgba(218, 190, 98, 0.9);
  outline-offset: 2px;
}

/* Responsive adjustments */

@media (max-width: 900px) {
  .hero {
    padding-top: 3rem;
  }

  .hero__highlights {
    grid-template-columns: minmax(0, 1fr);
  }

  .about__grid,
  .technology__grid,
  .contact__details {
    grid-template-columns: minmax(0, 1fr);
  }

  .section__content--two-column {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .nav__toggle {
    display: inline-flex;
  }

  .nav__links-wrapper {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    padding: 0.5rem 1.2rem 0.8rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    background: rgba(5, 8, 20, 0.98);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

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

  .nav__links {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  .nav__cta {
    margin-top: 0.75rem;
  }

  .hero {
    min-height: auto;
  }

  .hero__blimp-outline,
  .hero__orbit {
    opacity: 0.3;
  }

  .section {
    padding-block: 3.3rem;
  }

  .contact__details {
    grid-template-columns: minmax(0, 1fr);
  }
}

@keyframes orbit-rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes blimp-float {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-12px, -6px, 0);
  }
}