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

body {
  font-family: "DM Sans", sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background:
    radial-gradient(
      circle at 15% 15%,
      rgba(250, 204, 21, 0.18),
      transparent 28%
    ),
    radial-gradient(
      circle at 85% 20%,
      rgba(139, 92, 246, 0.22),
      transparent 32%
    ),
    radial-gradient(
      circle at 50% 100%,
      rgba(249, 115, 22, 0.18),
      transparent 35%
    ),
    #020617;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 80%);
  pointer-events: none;
}

.popup-overlay {
  width: 100%;
  max-width: 480px;
  position: relative;
  z-index: 2;
}

.popup-box {
  position: relative;
  overflow: hidden;
  width: 100%;
  padding: 34px 28px;
  border-radius: 34px;
  background: linear-gradient(
    180deg,
    rgba(15, 23, 42, 0.96),
    rgba(2, 6, 23, 0.98)
  );
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 30px 90px rgba(0, 0, 0, 0.55),
    0 0 55px rgba(250, 204, 21, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

.popup-box::before {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  right: -90px;
  top: -90px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(250, 204, 21, 0.22),
    transparent 68%
  );
  filter: blur(6px);
}

.popup-box::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  left: -80px;
  bottom: -80px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(139, 92, 246, 0.22),
    transparent 70%
  );
  filter: blur(8px);
}

.popup-box h2 {
  position: relative;
  z-index: 2;
  font-size: 34px;
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.8px;
  margin-bottom: 10px;
}

.popup-box h2::after {
  content: "";
  display: block;
  width: 58px;
  height: 4px;
  margin-top: 14px;
  border-radius: 999px;
  background: linear-gradient(90deg, #facc15, #f97316);
}

.popup-box p {
  position: relative;
  z-index: 2;
  color: #94a3b8;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.7;
  margin-bottom: 24px;
}

.popup-box input {
  position: relative;
  z-index: 2;
  width: 100%;
  margin-bottom: 14px;
  padding: 16px 17px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  outline: none;
  background: rgba(2, 6, 23, 0.72);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  transition: 0.25s ease;
}

.popup-box input::placeholder {
  color: #64748b;
}

.popup-box input:focus {
  border-color: rgba(250, 204, 21, 0.85);
  box-shadow:
    0 0 0 4px rgba(250, 204, 21, 0.09),
    0 8px 24px rgba(0, 0, 0, 0.25);
  transform: translateY(-1px);
}

.popup-download {
  position: relative;
  z-index: 2;
  width: 100%;
  margin-top: 8px;
  padding: 17px 18px;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  background: linear-gradient(135deg, #facc15, #fb923c, #f97316);
  color: #111827;
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.2px;
  box-shadow:
    0 15px 35px rgba(249, 115, 22, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  transition: 0.25s ease;
}

.popup-download:hover {
  transform: translateY(-2px);
  box-shadow:
    0 22px 46px rgba(249, 115, 22, 0.46),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.popup-download:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

#msg {
  position: relative;
  z-index: 2;
  margin-top: 18px;
  text-align: center;
  color: #facc15;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.6;
}

.security-note {
  position: relative;
  z-index: 2;
  margin-top: 18px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(34, 197, 94, 0.09);
  border: 1px solid rgba(34, 197, 94, 0.22);
  color: #bbf7d0;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.7;
}

@media (max-width: 520px) {
  body {
    padding: 14px;
    align-items: flex-start;
    padding-top: 32px;
  }

  .popup-box {
    padding: 28px 20px;
    border-radius: 28px;
  }

  .popup-box h2 {
    font-size: 29px;
  }

  .popup-box input {
    padding: 15px 15px;
  }

  .popup-download {
    padding: 16px;
  }
}