@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:wght@300;400;500&display=swap');

:root {
  --bg:        #0d1117;
  --surface:   #161c26;
  --surface2:  #1e2733;
  --teal:      #4ecdc4;
  --teal-dim:  #38a89d;
  --teal-glow: rgba(78, 205, 196, 0.18);
  --white:     #f0f8f7;
  --muted:     #8aa3a0;
  --radius:    14px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg);
  color: var(--white);
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  line-height: 1.65;
}

/* ── NAVBAR ─────────────────────────────────── */
nav {
  background: var(--surface);
  padding: 18px 48px;
  border-bottom: 1px solid rgba(78, 205, 196, 0.12);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.navContainer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1100px;
  margin: auto;
}

.logo {
  font-family: 'Syne', sans-serif;
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--teal);
  letter-spacing: -0.5px;
}

.navLinks {
  display: flex;
  gap: 32px;
}

.navLinks a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s;
}

.navLinks a:hover {
  color: var(--teal);
}

/* ── HERO ────────────────────────────────────── */
.hero {
  background: var(--bg);
  color: var(--white);
  text-align: center;
  padding: 130px 24px 120px;
  position: relative;
  overflow: hidden;
}

/* subtle radial glow behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -55%);
  width: 700px;
  height: 700px;
  background: radial-gradient(ellipse, rgba(78, 205, 196, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero h1 {
  font-family: 'Syne', sans-serif;
  font-size: 5rem;
  font-weight: 800;
  letter-spacing: -2px;
  color: var(--teal);
  margin-bottom: 20px;
  position: relative;
}

.hero p {
  font-size: 1.25rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 36px;
  font-weight: 300;
  position: relative;
}

.primaryButton {
  display: inline-block;
  background: var(--teal);
  color: var(--bg);
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  font-family: 'Syne', sans-serif;
  letter-spacing: 0.03em;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
  position: relative;
}

.primaryButton:hover {
  background: var(--teal-dim);
  box-shadow: 0 0 28px rgba(78, 205, 196, 0.35);
  transform: translateY(-2px);
}

/* ── FEATURES ────────────────────────────────── */
.features {
  padding: 90px 40px;
  text-align: center;
  background: var(--surface);
}

.features h2 {
  font-family: 'Syne', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 50px;
  color: var(--white);
  letter-spacing: -0.5px;
}

.featureGrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
  max-width: 1100px;
  margin: auto;
}

.card {
  background: var(--surface2);
  padding: 38px 28px;
  border-radius: var(--radius);
  border: 1px solid rgba(78, 205, 196, 0.1);
  text-align: left;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
}

.card:hover {
  border-color: rgba(78, 205, 196, 0.4);
  box-shadow: 0 8px 32px rgba(78, 205, 196, 0.1);
  transform: translateY(-4px);
}

.card h3 {
  font-family: 'Syne', sans-serif;
  color: var(--teal);
  margin-bottom: 12px;
  font-size: 1.25rem;
  font-weight: 700;
}

.card p {
  color: var(--muted);
  font-size: 1rem;
  font-weight: 300;
}

/* ── SUPPORT ─────────────────────────────────── */
.supportSection {
  padding: 90px 24px;
  background: var(--bg);
  text-align: center;
}

.supportSection h2 {
  font-family: 'Syne', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 22px;
  color: var(--white);
  letter-spacing: -0.5px;
}

.supportSection p {
  max-width: 660px;
  margin: 0 auto 16px;
  color: var(--muted);
  font-weight: 300;
}

.contactBox {
  margin-top: 32px;
  display: inline-block;
  background: var(--surface2);
  border: 1px solid rgba(78, 205, 196, 0.15);
  border-radius: var(--radius);
  padding: 28px 40px;
}

.contactBox p {
  color: var(--white);
  margin: 6px auto;
  font-size: 1rem;
}

.contactBox a {
  color: var(--teal);
  text-decoration: none;
  font-weight: 600;
  transition: opacity 0.2s;
}

.contactBox a:hover {
  opacity: 0.8;
}

/* ── FOOTER ──────────────────────────────────── */
footer {
  background: var(--surface);
  color: var(--muted);
  text-align: center;
  padding: 24px;
  border-top: 1px solid rgba(78, 205, 196, 0.08);
  font-size: 0.9rem;
}

/* ── RESPONSIVE ──────────────────────────────── */
@media (max-width: 768px) {
  nav {
    padding: 14px 20px;
  }

  .navContainer {
    flex-direction: column;
    gap: 12px;
  }

  .hero {
    padding: 90px 20px 80px;
  }

  .hero h1 {
    font-size: 3rem;
    letter-spacing: -1px;
  }

  .hero p {
    font-size: 1.05rem;
  }

  .features {
    padding: 60px 20px;
  }

  .features h2,
  .supportSection h2 {
    font-size: 1.9rem;
  }

  .contactBox {
    padding: 22px 24px;
    width: 100%;
    max-width: 400px;
  }
}