:root {
  --bg: #070a14;
  --surface: #121932;
  --surface-soft: #181f3d;
  --text: #f5f7ff;
  --muted: #b2b9cf;
  --line: rgba(255, 255, 255, 0.12);
  --brand: #69f0d1;
  --brand-strong: #47d8ff;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 0% 0%, rgba(71, 216, 255, 0.14), transparent 35%), var(--bg);
  line-height: 1.6;
}

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

.container {
  width: min(1120px, 92%);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: #fff;
  color: #000;
  padding: 0.5rem 0.7rem;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
  z-index: 99;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(7, 10, 20, 0.75);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

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

.logo {
  font-weight: 800;
  letter-spacing: 0.02em;
}

.logo span {
  color: var(--brand);
}

.menu-toggle {
  background: transparent;
  border: 0;
  display: grid;
  gap: 4px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  display: block;
}

.menu {
  position: absolute;
  left: 0;
  right: 0;
  top: 72px;
  display: none;
  background: #0b1020;
  border-bottom: 1px solid var(--line);
}

.menu.open {
  display: grid;
}

.menu a {
  padding: 0.95rem 1.1rem;
  color: var(--muted);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.menu-cta {
  color: var(--brand) !important;
}

.hero {
  padding: 3rem 0 2rem;
}

.hero-grid {
  display: grid;
  gap: 1rem;
}

.badge-line,
.section-tag {
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--brand);
  font-size: 0.75rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0;
}

h1 {
  font-size: clamp(1.9rem, 8vw, 3.4rem);
  margin-top: 0.9rem;
}

h2 {
  font-size: clamp(1.45rem, 5.8vw, 2.3rem);
  margin-top: 0.7rem;
}

.subtitle {
  color: var(--muted);
  margin-top: 1rem;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-top: 1.2rem;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.78rem 1.2rem;
  font-weight: 700;
}

.btn-primary {
  background: linear-gradient(120deg, var(--brand), var(--brand-strong));
  color: #03121f;
}

.btn-secondary {
  border-color: var(--line);
  color: var(--text);
}

.hero-panel,
.card,
.project-card,
.steps li,
.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.hero-panel {
  padding: 1rem;
}

.hero-panel ul {
  margin: 0.8rem 0 0;
  padding-left: 1rem;
  color: var(--muted);
}

.section {
  padding: 3.3rem 0;
}

.section-soft {
  background: rgba(255, 255, 255, 0.02);
}

.grid {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.2rem;
}

.card,
.project-card {
  padding: 1rem;
}

.card p,
.project-card p {
  color: var(--muted);
}

.mini-tag {
  display: inline-block;
  border: 1px solid rgba(105, 240, 209, 0.45);
  color: var(--brand);
  border-radius: 999px;
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
}

.steps {
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.8rem;
}

.steps li {
  padding: 1rem;
  display: grid;
  gap: 0.3rem;
}

.steps span {
  color: var(--muted);
}

.contact-wrap {
  display: grid;
  gap: 1rem;
}

.contact-form {
  padding: 1rem;
  display: grid;
  gap: 0.55rem;
}

.contact-form input,
.contact-form textarea {
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: var(--surface-soft);
  color: var(--text);
  font: inherit;
  padding: 0.65rem 0.75rem;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 1.1rem 0;
}

.footer-inner {
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

@media (min-width: 860px) {
  .menu-toggle {
    display: none;
  }

  .menu {
    position: static;
    display: flex;
    border: 0;
    background: transparent;
    gap: 0.2rem;
  }

  .menu a {
    border: 0;
    padding: 0.5rem 0.85rem;
    border-radius: 999px;
  }

  .menu a:hover,
  .menu a:focus-visible {
    background: rgba(255, 255, 255, 0.07);
    color: var(--text);
  }

  .hero {
    padding: 5rem 0 3rem;
  }

  .hero-grid {
    grid-template-columns: 1.3fr 0.9fr;
    align-items: start;
  }

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

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

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

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

  .contact-wrap {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

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