/* =============================================
   AIR SIGN – Intro Page
   Palette: #0B0B0B | #A6CE39 | #FFFFFF
   Font: Montserrat
   ============================================= */

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

:root {
  --black:  #0B0B0B;
  --green:  #A6CE39;
  --white:  #FFFFFF;
  --gray:   #F5F5F5;
  --font:   'Montserrat', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background-color: var(--white);
  color: var(--black);
  -webkit-font-smoothing: antialiased;
}

/* ── HERO ───────────────────────────────────── */

.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--white);
  padding: 2rem 1.5rem;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  text-align: center;
  max-width: 780px;
  width: 100%;
}

.hero__logo {
  width: 100%;
  max-width: 560px;
  height: auto;
  display: block;
}

.hero__payoff {
  font-size: clamp(1.5rem, 5vw, 2.8rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.1;
}

.payoff-light {
  color: var(--black);
}

.payoff-accent {
  color: var(--green);
}

.hero__coming-soon {
  font-size: clamp(0.7rem, 2vw, 0.85rem);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #999;
  margin-top: -0.5rem;
}

/* ── PRODUCT ────────────────────────────────── */

.product {
  background-color: var(--gray);
  padding: 5rem 1.5rem 6rem;
}

.product__inner {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.product__badge {
  display: inline-block;
  background-color: var(--green);
  color: var(--black);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.35rem 1rem;
  border-radius: 2px;
}

.product__title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--black);
}

.product__desc {
  font-size: clamp(0.9rem, 2vw, 1.05rem);
  font-weight: 400;
  line-height: 1.7;
  color: #444;
  max-width: 560px;
}

.product__img-wrap {
  width: 100%;
  max-width: 420px;
  margin: 1rem auto 0;
}

.product__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
  /* subtle shadow to float off the background */
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.10);
}

.product__specs {
  list-style: none;
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
  padding-top: 0.5rem;
}

.product__specs li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.spec-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #888;
}

.spec-value {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--black);
  letter-spacing: 0.02em;
}

/* ── FOOTER ─────────────────────────────────── */

.footer {
  background-color: var(--black);
  color: var(--white);
  padding: 1.5rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.footer__copy {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.footer__tagline {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
}

/* ── RESPONSIVE ─────────────────────────────── */

@media (max-width: 480px) {
  .hero {
    padding: 3rem 1.25rem;
  }

  .hero__inner {
    gap: 1.5rem;
  }

  .hero__logo {
    max-width: 320px;
  }

  .product__specs {
    gap: 1.5rem;
  }

  .footer {
    flex-direction: column;
    text-align: center;
  }
}