:root {
  color-scheme: dark;
  --bg: #070b10;
  --bg-2: #0c121a;
  --panel: rgba(12, 19, 28, 0.78);
  --panel-strong: rgba(14, 24, 35, 0.94);
  --line: rgba(159, 234, 255, 0.16);
  --line-strong: rgba(159, 234, 255, 0.3);
  --text: #eef8fb;
  --muted: #98a9b5;
  --dim: #647681;
  --cyan: #5ee7ff;
  --green: #70f0ba;
  --white-soft: rgba(255, 255, 255, 0.82);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 8px;
  --max: 1180px;
  --header-h: 74px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 18% 12%, rgba(94, 231, 255, 0.12), transparent 32rem),
    radial-gradient(circle at 82% 28%, rgba(112, 240, 186, 0.08), transparent 30rem),
    linear-gradient(180deg, var(--bg), #081017 42%, #05080c);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

::selection {
  background: rgba(94, 231, 255, 0.28);
  color: var(--text);
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 100;
  padding: 0.65rem 0.9rem;
  background: var(--text);
  color: var(--bg);
  border-radius: var(--radius);
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  min-height: var(--header-h);
  border-bottom: 1px solid transparent;
  transition:
    background 220ms ease,
    border-color 220ms ease,
    backdrop-filter 220ms ease;
}

.site-header.is-scrolled,
body.nav-open .site-header {
  background: rgba(7, 11, 16, 0.82);
  border-color: var(--line);
  backdrop-filter: blur(18px);
}

.nav-shell {
  width: min(var(--max), calc(100% - 2rem));
  min-height: var(--header-h);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-width: max-content;
  font-weight: 760;
  letter-spacing: 0;
}

.brand-mark {
  width: 2.25rem;
  height: 2.25rem;
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(94, 231, 255, 0.38);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(94, 231, 255, 0.22), rgba(112, 240, 186, 0.12)),
    rgba(4, 11, 16, 0.82);
  color: var(--green);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.8rem;
  text-transform: uppercase;
  box-shadow: 0 0 26px rgba(94, 231, 255, 0.11);
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.3rem;
}

.nav-links a {
  position: relative;
  padding: 0.55rem 0.75rem;
  color: var(--muted);
  font-size: 0.93rem;
  transition:
    color 180ms ease,
    background 180ms ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  bottom: 0.32rem;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.is-active {
  color: var(--text);
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after,
.nav-links a.is-active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(8, 13, 19, 0.72);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 2px;
  margin: 0.25rem auto;
  background: currentColor;
  transform-origin: center;
  transition:
    transform 180ms ease,
    opacity 180ms ease;
}

body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

body.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 88svh;
  overflow: hidden;
  display: grid;
  align-items: center;
  isolation: isolate;
  padding: calc(var(--header-h) + 2.5rem) 0 4.8rem;
  background-color: #071018;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero::before {
  background-image:
    linear-gradient(90deg, rgba(7, 11, 16, 0.94) 0%, rgba(7, 11, 16, 0.82) 34%, rgba(7, 11, 16, 0.38) 68%, rgba(7, 11, 16, 0.62) 100%),
    linear-gradient(180deg, rgba(7, 11, 16, 0.18), rgba(7, 11, 16, 0.88)),
    url("assets/engineering-hero.png");
  background-position: center, center, center;
  background-size: cover, cover, cover;
}

.hero::after {
  z-index: -1;
  background:
    linear-gradient(rgba(159, 234, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(159, 234, 255, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(90deg, #000 0%, transparent 88%);
}

.signal-grid {
  position: absolute;
  inset: auto 0 0;
  height: 30%;
  z-index: -1;
  opacity: 0.7;
  background:
    linear-gradient(90deg, transparent, rgba(94, 231, 255, 0.22), transparent),
    repeating-linear-gradient(90deg, transparent 0 26px, rgba(112, 240, 186, 0.12) 26px 27px, transparent 27px 60px);
  filter: blur(0.5px);
  animation: signal-shift 9s linear infinite;
}

.hero-inner {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

.eyebrow,
.section-kicker {
  margin: 0 0 1rem;
  color: var(--green);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  width: min(780px, 100%);
  margin: 0;
  color: #f8fdff;
  font-size: clamp(2.65rem, 7vw, 6.85rem);
  line-height: 0.96;
  letter-spacing: 0;
  text-wrap: balance;
}

.hero-copy {
  width: min(620px, 100%);
  margin: 1.45rem 0 0;
  color: var(--white-soft);
  font-size: clamp(1.03rem, 1.4vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  min-height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0.78rem 1rem;
  font-weight: 720;
  line-height: 1.1;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(135deg, var(--cyan), var(--green));
  border-color: transparent;
  color: #031017;
  box-shadow: 0 18px 55px rgba(94, 231, 255, 0.22);
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 24px 72px rgba(112, 240, 186, 0.22);
}

.button-ghost {
  background: rgba(8, 16, 24, 0.56);
  color: var(--text);
  backdrop-filter: blur(12px);
}

.button-ghost:hover,
.button-ghost:focus-visible {
  border-color: rgba(112, 240, 186, 0.62);
  background: rgba(12, 26, 34, 0.68);
}

.hero-metrics {
  width: min(720px, 100%);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 3.2rem 0 0;
  padding: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  box-shadow: var(--shadow);
}

.hero-metrics div {
  min-width: 0;
  padding: 1rem;
  background: rgba(7, 13, 19, 0.74);
  backdrop-filter: blur(16px);
}

.hero-metrics dt {
  color: var(--cyan);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.8rem;
}

.hero-metrics dd {
  margin: 0.2rem 0 0;
  color: var(--text);
  font-weight: 720;
}

.section {
  position: relative;
  padding: clamp(4.5rem, 8vw, 7rem) 0;
}

.section-alt {
  background:
    linear-gradient(180deg, rgba(9, 16, 24, 0.94), rgba(5, 9, 14, 0.94)),
    linear-gradient(rgba(159, 234, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(159, 234, 255, 0.035) 1px, transparent 1px);
  background-size: auto, 34px 34px, 34px 34px;
  border-block: 1px solid rgba(159, 234, 255, 0.1);
}

.section-inner {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

.section-intro {
  padding: clamp(2rem, 4vw, 3.5rem) 0;
  border-bottom: 1px solid rgba(159, 234, 255, 0.1);
  background: rgba(6, 10, 15, 0.72);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: clamp(1.5rem, 6vw, 5rem);
  align-items: end;
}

.section-heading {
  width: min(760px, 100%);
  margin-bottom: 2rem;
}

.heading-row {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.55fr);
  gap: 2rem;
  align-items: end;
}

.section h2,
.section h3 {
  margin: 0;
  letter-spacing: 0;
}

.section h2 {
  color: #f5fbfd;
  font-size: clamp(1.9rem, 4vw, 3.6rem);
  line-height: 1.04;
  text-wrap: balance;
}

.section h3 {
  color: var(--text);
  font-size: 1.08rem;
  line-height: 1.25;
}

.section p {
  color: var(--muted);
}

.section-heading p,
.intro-grid > p,
.heading-row > p,
.about-copy p,
.contact-layout p {
  margin: 0;
  font-size: 1rem;
}

.intro-grid h2 {
  max-width: 820px;
}

.service-grid,
.work-grid {
  display: grid;
  gap: 1rem;
}

.service-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.service-card,
.work-card,
.terminal-panel,
.contact-links a {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 16px 55px rgba(0, 0, 0, 0.26);
}

.service-card,
.work-card {
  position: relative;
  overflow: hidden;
  min-height: 220px;
  padding: 1.2rem;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.service-card::before,
.work-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent, rgba(94, 231, 255, 0.16), transparent),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 180% 100%, 100% 32px;
  opacity: 0;
  transition: opacity 180ms ease;
}

.service-card:hover,
.work-card:hover {
  transform: translateY(-4px);
  border-color: rgba(94, 231, 255, 0.34);
  background: var(--panel-strong);
}

.service-card:hover::before,
.work-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 2.35rem;
  height: 2.35rem;
  display: inline-grid;
  place-items: center;
  margin-bottom: 1.35rem;
  border: 1px solid rgba(112, 240, 186, 0.28);
  border-radius: var(--radius);
  background: rgba(112, 240, 186, 0.08);
  color: var(--green);
  font-size: 1.1rem;
}

.service-card p,
.work-card p {
  margin: 0.75rem 0 0;
}

.work-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.work-card {
  min-height: 350px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.work-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
  color: var(--dim);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.76rem;
  text-transform: uppercase;
}

.status-dot {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  color: var(--green);
  white-space: nowrap;
}

.status-dot::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 18px rgba(112, 240, 186, 0.7);
}

.work-card ul {
  display: grid;
  gap: 0.5rem;
  margin: 1.4rem 0 0;
  padding: 0;
  color: var(--white-soft);
  list-style: none;
}

.work-card li {
  position: relative;
  padding-left: 1.1rem;
}

.work-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.45rem;
  height: 1px;
  background: var(--cyan);
}

.about-layout,
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.7fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

.about-copy p + p {
  margin-top: 1rem;
}

.about-copy h2,
.contact-layout h2 {
  margin-bottom: 1.25rem;
}

.terminal-panel {
  overflow: hidden;
  background: rgba(4, 10, 15, 0.82);
}

.terminal-header {
  height: 2.6rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0 1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.terminal-header span {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--dim);
}

.terminal-header span:nth-child(1) {
  background: #ff6f86;
}

.terminal-header span:nth-child(2) {
  background: #f0d36f;
}

.terminal-header span:nth-child(3) {
  background: var(--green);
}

pre {
  margin: 0;
  padding: 1.25rem;
  overflow-x: auto;
  color: var(--white-soft);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(0.78rem, 1.5vw, 0.95rem);
  line-height: 1.7;
}

code {
  color: inherit;
}

.contact-section {
  background:
    linear-gradient(120deg, rgba(94, 231, 255, 0.08), transparent 42%),
    linear-gradient(280deg, rgba(112, 240, 186, 0.08), transparent 38%),
    rgba(5, 8, 12, 0.72);
  border-top: 1px solid rgba(159, 234, 255, 0.1);
}

.contact-links {
  display: grid;
  gap: 0.8rem;
}

.contact-links a {
  display: grid;
  gap: 0.2rem;
  padding: 1rem;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.contact-links a:hover,
.contact-links a:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(112, 240, 186, 0.48);
  background: var(--panel-strong);
}

.contact-links span {
  color: var(--green);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.contact-links strong {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 1rem;
}

.site-footer {
  padding: 1.5rem 0;
  border-top: 1px solid rgba(159, 234, 255, 0.1);
  background: #04070b;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-inner p {
  margin: 0;
  color: var(--dim);
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

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

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

@keyframes signal-shift {
  from {
    transform: translateX(-16%);
  }

  to {
    transform: translateX(16%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}

@media (max-width: 940px) {
  :root {
    --header-h: 66px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    inset: var(--header-h) 1rem auto;
    display: grid;
    gap: 0.35rem;
    padding: 0.8rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(7, 11, 16, 0.95);
    box-shadow: var(--shadow);
    transform: translateY(-0.8rem);
    opacity: 0;
    pointer-events: none;
    transition:
      transform 180ms ease,
      opacity 180ms ease;
  }

  body.nav-open .nav-links {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a {
    padding: 0.9rem;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.025);
  }

  .nav-links a::after {
    display: none;
  }

  .hero {
    min-height: 86svh;
    padding-bottom: 3.5rem;
  }

  .hero::before {
    background-image:
      linear-gradient(90deg, rgba(7, 11, 16, 0.95), rgba(7, 11, 16, 0.66)),
      linear-gradient(180deg, rgba(7, 11, 16, 0.12), rgba(7, 11, 16, 0.92)),
      url("assets/engineering-hero.png");
    background-position: center, center, 58% center;
  }

  .intro-grid,
  .heading-row,
  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .work-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .nav-shell,
  .hero-inner,
  .section-inner {
    width: min(100% - 1.1rem, var(--max));
  }

  .hero {
    min-height: 84svh;
    padding-top: calc(var(--header-h) + 1.8rem);
  }

  .hero h1 {
    font-size: clamp(2.3rem, 15vw, 4rem);
  }

  .hero-copy {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
    margin-top: 2rem;
  }

  .service-grid,
  .work-grid {
    grid-template-columns: 1fr;
  }

  .service-card,
  .work-card {
    min-height: auto;
  }

  .section {
    padding: 3.8rem 0;
  }

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

@media (max-width: 380px) {
  .brand {
    gap: 0.5rem;
  }

  .brand-mark {
    width: 2rem;
    height: 2rem;
  }

  .hero h1 {
    font-size: 2.1rem;
  }
}