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

body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(ellipse at 60% 20%, #1a1025, #09090b 70%);
  font-family: system-ui, sans-serif;
}

.card {
  width: 380px;
  padding: 36px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(40px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.preview {
  height: 190px;
  padding: 24px;
  border-radius: 16px;
  background: linear-gradient(135deg, #1c1c2e, #2d1f3d, #3b2050);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.chip {
  width: 40px;
  height: 30px;
  border-radius: 6px;
  background: linear-gradient(135deg, #e2b865, #c9a24d);
}

.number {
  font-size: 20px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 3px;
}

.details {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.details small {
  display: block;
  font-size: 9px;
  color: rgba(255, 255, 255, 0.25);
  letter-spacing: 1px;
  margin-bottom: 2px;
}

label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 6px;
}

input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(255, 255, 255, 0.03);
  color: #e0e7ff;
  font-size: 14px;
  outline: none;
}

input:focus {
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.1);
}

.row {
  display: flex;
  gap: 12px;
}

.row > * {
  flex: 1;
}

.submit {
  padding: 14px;
  border: none;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #312e81, #4338ca, #6366f1);
  box-shadow: 0 4px 20px rgba(67, 56, 202, 0.3);
}