/* ── Variables ─────────────────────────────────────── */
:root {
  --black:       #080c10;
  --navy:        #0d1b2a;
  --blue:        #1a6fd4;
  --blue-light:  #3d9be9;
  --blue-glow:   #1a6fd466;
  --white:       #f0f4f8;
  --grey:        #8fa3b8;
  --font:        system-ui, 'Segoe UI', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background-color: var(--black);
  color: var(--white);
  line-height: 1.6;
}

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

/* ── Nav ───────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 2rem;
  background: rgba(8, 12, 16, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(26, 111, 212, 0.2);
}

.nav__logo { height: 48px; }

.nav__links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav__links a {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--grey);
  transition: color 0.2s;
}

.nav__links a:hover { color: var(--blue-light); }

/* ── Hero ──────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  background:
    radial-gradient(ellipse 60% 50% at 50% 40%, rgba(26, 111, 212, 0.18) 0%, transparent 70%),
    var(--black);
}

.hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  max-width: 640px;
}

.hero__logo {
  width: 200px;
  border-radius: 50%;
  filter: drop-shadow(0 0 24px rgba(26, 111, 212, 0.6));
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-transform: uppercase;
}

.hero__title span { color: var(--blue-light); }

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--grey);
  max-width: 400px;
}

/* ── Button ────────────────────────────────────────── */
.btn {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.85rem 2.25rem;
  background: var(--blue);
  color: var(--white);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 4px;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
  box-shadow: 0 0 20px var(--blue-glow);
}

.btn:hover {
  background: var(--blue-light);
  box-shadow: 0 0 32px rgba(61, 155, 233, 0.5);
  transform: translateY(-2px);
}

/* ── Sections ──────────────────────────────────────── */
.section {
  padding: 5rem 2rem;
}

.section--dark {
  background-color: var(--navy);
}

.container {
  max-width: 1000px;
  margin: 0 auto;
}

.container--narrow {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.section__title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
  position: relative;
  display: inline-block;
}

.section__title::after {
  content: '';
  display: block;
  height: 3px;
  width: 48px;
  background: var(--blue);
  margin-top: 0.5rem;
}

.container--narrow .section__title::after { margin: 0.5rem auto 0; }

.section__text {
  color: var(--grey);
  font-size: 1.05rem;
  max-width: 680px;
  margin-bottom: 3rem;
}

.container--narrow .section__text { margin-bottom: 2rem; }

/* ── Cards ─────────────────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.card {
  background: var(--navy);
  border: 1px solid rgba(26, 111, 212, 0.2);
  border-radius: 8px;
  padding: 2rem 1.75rem;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: var(--blue);
  transform: translateY(-4px);
}

.card__icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.75rem;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.6rem;
  color: var(--blue-light);
}

.card p { color: var(--grey); font-size: 0.95rem; }

/* ── Values ────────────────────────────────────────── */
.values {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.values__item {
  border-left: 3px solid var(--blue);
  padding-left: 1.25rem;
}

.values__label {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--blue-light);
  margin-bottom: 0.35rem;
}

.values__desc { color: var(--grey); font-size: 0.95rem; }

/* ── Footer ────────────────────────────────────────── */
.footer {
  background: var(--navy);
  border-top: 1px solid rgba(26, 111, 212, 0.2);
  padding: 2.5rem 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer__logo { height: 60px; opacity: 0.85; }

.footer p { color: var(--grey); font-size: 0.875rem; }

/* ── Responsive ────────────────────────────────────── */
@media (max-width: 600px) {
  .nav__links { gap: 1.25rem; }
  .nav__links a { font-size: 0.8rem; }
}