:root {
  --color-bg: #05070b;
  --color-bg-alt: #080b12;
  --color-surface: #0e1220;
  --color-surface-soft: #12172a;
  --color-accent: #48ff9b;
  --color-accent-soft: rgba(72, 255, 155, 0.12);
  --color-accent-blue: #3c7bff;
  --color-text: #f7f9ff;
  --color-text-muted: #a5b0d4;
  --color-border-subtle: rgba(255, 255, 255, 0.06);
  --shadow-soft: 0 18px 60px rgba(0, 0, 0, 0.7);
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-pill: 999px;
  --transition-fast: 180ms ease-out;
  --transition-med: 240ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, sans-serif;
  background: radial-gradient(circle at top, #151c33 0, #05070b 45%, #02030a 100%);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

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

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

main {
  padding-top: 72px;
}

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

.section {
  padding: 5rem 0;
}

.section-alt {
  padding: 5rem 0;
  background: radial-gradient(circle at top left, #151c33 0, #080b12 40%, #05070b 100%);
}

.section-header {
  max-width: 680px;
  margin: 0 auto 3rem;
  text-align: center;
}

.section-header h2 {
  font-size: 2.1rem;
  letter-spacing: 0.02em;
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 0.98rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(6, 9, 18, 0.92), rgba(6, 9, 18, 0.85));
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0;
}

.logo-image {
  height: 56px;
  width: auto;
  border-radius: 10px;
  object-fit: contain;
  box-shadow: 0 0 22px rgba(0, 0, 0, 0.75);
}

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

.logo-title {
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

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

.nav {
  display: flex;
  align-items: center;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  position: relative;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-blue));
  transition: width var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(5, 7, 13, 0.9);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  width: 16px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
}

/* Hero */
.hero {
  padding: 6.5rem 0 5.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.7fr);
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.7rem;
  color: var(--color-accent);
  margin-bottom: 0.9rem;
}

.hero h1 {
  font-size: 2.7rem;
  line-height: 1.1;
  margin-bottom: 1.1rem;
}

.hero-subtitle {
  color: var(--color-text-muted);
  font-size: 0.98rem;
  max-width: 32rem;
  margin-bottom: 1.8rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.7rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background var(--transition-med),
    color var(--transition-med),
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast);
}

.btn.primary {
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-blue));
  color: #020308;
  font-weight: 600;
  box-shadow: 0 14px 40px rgba(60, 123, 255, 0.45);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 50px rgba(60, 123, 255, 0.6);
}

.btn.ghost {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(11, 16, 28, 0.95);
  color: var(--color-text);
}

.btn.ghost:hover {
  background: rgba(24, 32, 54, 0.95);
  border-color: rgba(255, 255, 255, 0.28);
}

.btn.full-width {
  width: 100%;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero-tags span {
  font-size: 0.7rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: radial-gradient(circle at top left, #222a42, #111624);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--color-text-muted);
}

.hero-visual {
  position: relative;
  min-height: 280px;
  border-radius: 28px;
  background: radial-gradient(circle at top, #203159 0, #090c16 55%, #05070b 100%);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(0);
  opacity: 0.9;
}

.orb-main {
  width: 220px;
  height: 220px;
  background: radial-gradient(circle at 30% 30%, #48ff9b, rgba(72, 255, 155, 0) 65%);
  top: 10%;
  left: 8%;
  animation: float 9s ease-in-out infinite alternate;
}

.orb-secondary {
  width: 260px;
  height: 260px;
  background: radial-gradient(circle at 70% 20%, #3c7bff, rgba(60, 123, 255, 0) 65%);
  bottom: -10%;
  right: -12%;
  opacity: 0.7;
  animation: float 11s ease-in-out infinite alternate-reverse;
}

.hero-card {
  position: absolute;
  backdrop-filter: blur(14px);
  background: rgba(5, 7, 13, 0.88);
  border-radius: 18px;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  max-width: 210px;
  font-size: 0.78rem;
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.7);
}

.hero-card h3 {
  font-size: 0.9rem;
  margin: 0 0 0.25rem;
}

.hero-card p {
  margin: 0;
  color: var(--color-text-muted);
}

.hero-card--ev {
  top: 16%;
  right: 10%;
}

.hero-card--energy {
  bottom: 14%;
  left: 9%;
}

@keyframes float {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(10px, -16px, 0);
  }
}

/* About */
.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 2.8rem;
  align-items: flex-start;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
}

.about-card {
  background: radial-gradient(circle at top left, #222a41, #111624);
  border-radius: var(--radius-md);
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
}

.about-card h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
  font-size: 0.98rem;
}

.about-card p {
  margin: 0;
  color: var(--color-text-muted);
}

.section p {
  color: var(--color-text-muted);
  font-size: 0.97rem;
}

/* Domains */
.domain-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.8rem;
}

.domain-card {
  background: radial-gradient(circle at top, #1b233b, #090c18);
  border-radius: 20px;
  padding: 1.4rem 1.3rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
}

.domain-card h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
  font-size: 1.05rem;
}

.domain-card > p {
  margin-top: 0;
  margin-bottom: 0.8rem;
}

.domain-card ul {
  padding-left: 1.2rem;
  margin: 0;
  list-style: none;
}

.domain-card ul li {
  position: relative;
  padding-left: 0.75rem;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.domain-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.53rem;
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-blue));
}

/* Engineering Support */
.checklist {
  list-style: none;
  padding-left: 0;
  margin: 1.2rem 0 0;
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}

.checklist li::before {
  content: "✓";
  font-size: 0.7rem;
  margin-top: 0.15rem;
  color: var(--color-accent);
}

.info-card {
  background: radial-gradient(circle at top left, #1d283f, #0c101d);
  border-radius: 22px;
  padding: 1.4rem 1.3rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-soft);
  font-size: 0.95rem;
}

.info-card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

/* Who We Work With */
.pill-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.4rem;
}

.pill-card {
  background: radial-gradient(circle at top, #1b2136, #0b0f1c);
  border-radius: 20px;
  padding: 1.2rem 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
}

.pill-card h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

.pill-card p {
  margin: 0;
}

/* Why Choose Us */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.3rem;
}

.why-item {
  background: rgba(8, 11, 20, 0.95);
  border-radius: 16px;
  padding: 0.9rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.9rem;
}

.why-item h3 {
  margin-top: 0;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

.why-item p {
  margin: 0;
}

.metrics-card {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.metric {
  border-radius: 16px;
  padding: 0.9rem 0.9rem;
  border: 1px solid rgba(72, 255, 155, 0.28);
  background: radial-gradient(circle at top left, var(--color-accent-soft), #05070b);
}

.metric-value {
  display: block;
  font-size: 1.05rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.metric-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Contact */
.contact-wrap {
  align-items: flex-start;
}

.contact-details p {
  margin: 0 0 0.2rem;
  font-size: 0.9rem;
}

.contact-form {
  background: radial-gradient(circle at top, #1b2338, #0b0f1c);
  border-radius: 20px;
  padding: 1.4rem 1.3rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-soft);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.7rem;
}

.form-field label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

input,
select,
textarea {
  background: rgba(5, 8, 16, 0.9);
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.6rem 0.75rem;
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px rgba(72, 255, 155, 0.5);
  background: rgba(7, 11, 22, 0.95);
}

textarea {
  resize: vertical;
}

.form-status {
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  min-height: 1em;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.5rem 0 2rem;
  background: radial-gradient(circle at bottom, #101528, #05070b);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  align-items: center;
  text-align: center;
}

.footer-inner p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-note {
  color: rgba(165, 176, 212, 0.9);
}

/* Utilities */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-visual {
    order: -1;
  }

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

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

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

@media (max-width: 768px) {
  main {
    padding-top: 64px;
  }

  .header-inner {
    height: 64px;
  }

  .nav-links {
    position: absolute;
    right: 1.5rem;
    top: 64px;
    background: rgba(5, 7, 14, 0.98);
    border-radius: 16px;
    padding: 0.8rem 1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.9rem;
    min-width: 180px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: var(--shadow-soft);
    transform-origin: top right;
    transform: scale(0.9);
    opacity: 0;
    pointer-events: none;
    transition:
      opacity var(--transition-fast),
      transform var(--transition-fast);
  }

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

  .nav-toggle {
    display: inline-flex;
  }

  .hero {
    padding-top: 5.5rem;
  }

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

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

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

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

  .metrics-card {
    margin-top: 1rem;
  }

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

@media (max-width: 520px) {
  .hero {
    padding-top: 5rem;
  }

  .hero-tags span {
    font-size: 0.68rem;
  }

  .domain-card,
  .pill-card,
  .contact-form {
    padding: 1.1rem 1rem;
  }
}