body {
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #060b0e;
  font-family: system-ui, sans-serif;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 10%, rgba(16,185,129,0.5) 0%, transparent 20%),
    radial-gradient(circle at 10% 90%, rgba(20,184,166,0.5) 0%, transparent 22%),
    #060b0e;
}

.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
}

.glow-top {
  width: 500px;
  height: 500px;
  top: -10%;
  right: 10%;
  background: radial-gradient(#10b981, #047857 60%, transparent 70%);
  animation: drift1 3s ease-in-out infinite alternate;
}

.glow-bottom {
  width: 400px;
  height: 400px;
  bottom: -5%;
  left: -5%;
  background: radial-gradient(#14b8a6, #0f766e 60%, transparent 70%);
  animation: drift2 4s ease-in-out infinite alternate;
}

.card {
  position: relative;
  width: 380px;
  padding: 36px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(40px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  text-align: center;
}

h1 {
  font-size: 20px;
  font-weight: 700;
  color: #f0fdf4;
  margin: 0 0 4px;
}

.subtitle {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
  margin: 0 0 24px;
}

.code {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}

.code input {
  width: 46px;
  height: 54px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: #f0fdf4;
  font-size: 22px;
  font-weight: 600;
  text-align: center;
  outline: none;
  caret-color: #34d399;
}

.code input:focus {
  border-color: rgba(16, 185, 129, 0.6);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.2);
}

.submit {
  cursor: pointer;
  width: 100%;
  padding: 13px;
  border: none;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #059669, #10b981, #34d399);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}