body {
  margin: 0;
  padding: 0;
  font-family: "Roboto Mono", monospace;
  background: radial-gradient(ellipse at center, #020202 0%, #0a0a0a 100%);
  color: #1a1c1f;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  overflow-x: hidden;
}

/* 🔹 Card principal */
.card {
  background: rgba(15, 15, 25, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 180, 255, 0.4);
  border-radius: 20px;
  padding: 2.5rem;
  max-width: 900px;
  width: 90%;
  box-shadow: 0 0 25px rgba(0, 120, 255, 0.25);
  animation: fadeInUp 1.5s ease;
  position: relative;
  z-index: 10;
}

h1.titulo {
  font-size: 2.2rem;
  color: #747a7e;
  text-align: center;
  margin-bottom: 0.4rem;
}

h2.subtitulo {
  font-size: 1.4rem;
  color: #105386;
  text-align: center;
  margin-bottom: 1.5rem;
}

p {
  line-height: 1.7;
  text-align: justify;
  color: #d0d8e0;
  margin-bottom: 1rem;
}

/* 🔹 Botões */
.botoes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.btn {
  border: none;
  padding: 0.9rem 1.8rem;
  border-radius: 30px;
  background: linear-gradient(90deg, #0b0e12, #00bfff);
  color: white;
  cursor: pointer;
  font-size: 1rem;
  letter-spacing: 1px;
  transition: all 0.4s ease;
  box-shadow: 0 0 10px rgba(0, 180, 255, 0.3);
}

.btn:hover {
  background: linear-gradient(90deg, #202f42, #00bfff);
  transform: translateY(-3px);
  box-shadow: 0 0 25px rgba(28, 52, 58, 0.6);
}

/* 🔹 Setinha de voltar */
.arrow-top {
  position: fixed;
  top: 22px;
  left: 22px;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  text-decoration: none;
  color: #c0c0c0;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0.01)
  );
  border: 1px solid rgba(192, 192, 192, 0.06);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.arrow-top:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.7), 0 0 22px rgba(192, 192, 192, 0.06);
  background: linear-gradient(
    180deg,
    rgba(140, 124, 124, 0.04),
    rgba(255, 255, 255, 0.01)
  );
}

/* 🔹 Transição metálica */
.metal-transition {
  position: fixed;
  top: 0;
  left: -100%;
  width: 200%;
  height: 100%;
  background: linear-gradient(
    120deg,
    rgba(217, 224, 230, 0.2),
    rgba(6, 4, 1, 0.1),
    rgba(198, 204, 210, 0.2)
  );
  z-index: 900;
  transform: skewX(-20deg);
  pointer-events: none;
}

@keyframes metallicEntry {
  0% {
    left: -120%;
    opacity: 0;
  }
  50% {
    left: 0%;
    opacity: 1;
  }
  100% {
    left: 120%;
    opacity: 0;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(80px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 🔹 Responsividade */
@media (max-width: 768px) {
  .card {
    padding: 2.3rem;
    background: rgba(15, 15, 25, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 180, 255, 0.4);
    border-radius: 20px;
    padding: 1.1rem;
    margin-top: 10px;
    max-width: 500px;
    width: 85%;
    box-shadow: 0 0 25px rgba(0, 120, 255, 0.25);
    animation: fadeInUp 1.5s ease;
    position: relative;
    z-index: 10;
  }
  h1.titulo {
    font-size: 1.7rem;
  }
  h2.subtitulo {
    font-size: 1.2rem;
  }
  p {
    font-size: 0.8rem;
  }
  .btn {
    width: 100%;
  }
  .arrow-top {
    top: 14px;
    left: 14px;
    width: 40px;
    height: 40px;
  }
}