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

body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(ellipse at 30% 20%, #1e1b4b, #070810 70%);
  font-family: system-ui, sans-serif;
}

.card {
  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);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

h1 {
  font-size: 20px;
  font-weight: 700;
  color: #f0f0ff;
  margin: 0;
}

label {
  font-size: 12px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: -8px;
}

input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: #e0e0ff;
  font-size: 14px;
  outline: none;
}

input::placeholder {
  color: rgba(255, 255, 255, 0.15);
}

input:focus {
  border-color: rgba(99, 102, 241, 0.5);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.15);
}

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

.row > * {
  flex: 1;
}

.total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.total strong {
  font-size: 20px;
  color: #c7d2fe;
}

.submit {
  padding: 14px;
  border: none;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #4f46e5, #6366f1, #818cf8);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
}