body {
  margin: 0;
  padding: 0;
  background: url('../images/bg71.jpg') center center / cover no-repeat;
  font-family: Arial, sans-serif;
  color: #fff;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 📱 Mobile */
@media (max-width: 768px) {
  body {
    background-image: url('../images/bg71-mobile.jpg');
    background-position: center top;
    background-size: cover;
    background-attachment: scroll;
  }
}

.container {
  background: linear-gradient(
    145deg,
    rgba(7, 20, 48, 0.48),
    rgba(15, 35, 75, 0.38)
  );

  padding: 40px;
  border: 1px solid rgba(70, 160, 255, 0.45);
  border-radius: 16px;
  text-align: center;
  max-width: 90%;

  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);

  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.30),
    0 0 25px rgba(20, 120, 255, 0.15);
}

h2 {
  font-size: 2em;
  margin-bottom: 20px;
}


p {
  font-size: 1.2em;
  margin-bottom: 30px;
}


form {
  display: flex;
  flex-direction: column;
  align-items: center;
}

input[type="email"] {
  padding: 10px;
  width: 80%;
  max-width: 300px;
  margin-bottom: 20px;
  font-size:18px;
  border: none;
  border-radius: 5px;
}

.btn {
  display: inline-block;
  padding: 13px 28px;

  background: linear-gradient(135deg, #ffb300, #ff6a00);
  color: #fff;

  text-decoration: none;
  border: 1px solid rgba(255, 215, 80, 0.75);
  border-radius: 8px;

  font-size: 1em;
  font-weight: 700;
  cursor: pointer;

  box-shadow:
    0 6px 18px rgba(255, 106, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);

  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    filter 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.12);

  box-shadow:
    0 9px 25px rgba(255, 140, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn:active {
  transform: translateY(0);
}