:root {
  --grafite: #111923;
  --azul: #2457ff;
  --verde: #4ed7c5;
  --marfim: #f6f2ea;
  --whatsapp: #25d366;
  --fonte-titulo: "Montserrat", "Century Gothic", sans-serif;
  --fonte-corpo: "Source Sans 3", "DejaVu Sans", sans-serif;
}

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

body {
  margin: 0;
  min-height: 100svh;
  font-family: var(--fonte-corpo);
  color: var(--marfim);
  background: var(--grafite);
}

h1,
p {
  margin: 0;
}

.landing {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 2rem 1.5rem;
  overflow: hidden;
}

.landing-media {
  position: absolute;
  inset: 0;
  background:
    url("https://images.unsplash.com/photo-1434030216411-0b793f4b4173?auto=format&fit=crop&w=2000&q=80")
      center/cover no-repeat;
  transform: scale(1.05);
  animation: pan 16s ease-in-out infinite alternate;
}

.landing-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(17, 25, 35, 0.55) 0%, rgba(17, 25, 35, 0.78) 45%, rgba(17, 25, 35, 0.92) 100%),
    linear-gradient(120deg, rgba(36, 87, 255, 0.28), transparent 55%);
}

.landing-content {
  position: relative;
  z-index: 1;
  width: min(100%, 560px);
  text-align: center;
  animation: rise 0.8s ease both;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.brand-mark {
  position: relative;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  margin-right: 4px;
  margin-bottom: 4px;
}

.brand-block {
  position: absolute;
  inset: 0;
  background: var(--azul);
  border-radius: 4px;
}

.brand-module {
  position: absolute;
  right: -4px;
  bottom: -4px;
  width: 16px;
  height: 16px;
  background: var(--verde);
  border-radius: 3px;
}

.brand-pr {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  font-family: var(--fonte-titulo);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.brand-name {
  font-family: var(--fonte-titulo);
  font-size: clamp(1.4rem, 4vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--verde);
}

h1 {
  font-family: var(--fonte-titulo);
  font-size: clamp(1.85rem, 5.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.lead {
  margin: 1rem auto 0;
  max-width: 34ch;
  font-size: clamp(1.05rem, 2.4vw, 1.2rem);
  line-height: 1.5;
  color: rgba(246, 242, 234, 0.86);
}

.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  width: min(100%, 360px);
  min-height: 58px;
  margin-top: 2rem;
  padding: 0.95rem 1.4rem;
  border-radius: 4px;
  background: var(--whatsapp);
  color: #fff;
  font-family: var(--fonte-titulo);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 14px 40px rgba(37, 211, 102, 0.28);
  animation: pulse 2.4s ease-in-out infinite;
}

.btn-whatsapp:hover {
  transform: translateY(-2px);
  background: #1ebe57;
  animation: none;
}

.btn-whatsapp svg {
  width: 1.35rem;
  height: 1.35rem;
  flex-shrink: 0;
}

@keyframes pan {
  from {
    transform: scale(1.05) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.1) translate3d(-1.2%, -1%, 0);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 14px 40px rgba(37, 211, 102, 0.28);
  }
  50% {
    box-shadow: 0 14px 48px rgba(37, 211, 102, 0.45);
  }
}

@media (prefers-reduced-motion: reduce) {
  .landing-media,
  .landing-content,
  .btn-whatsapp {
    animation: none !important;
  }
}