body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: linear-gradient(to bottom right, #020617, #0b1025);
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

/* Glow Background (matches portfolio) */
body::before,
body::after {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
}

body::before {
  background: rgba(59, 130, 246, 0.25);
  top: -100px;
  left: -100px;
}

body::after {
  background: rgba(168, 85, 247, 0.25);
  bottom: -120px;
  right: -120px;
}

.container {
  text-align: center;
  z-index: 1;
}

.subtitle {
  color: #94a3b8;
  margin-bottom: 25px;
}

.card {
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  padding: 30px;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.08);
  width: 340px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}

input {
  width: 100%;
  padding: 12px;
  margin-bottom: 15px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.08);
  background: #020617;
  color: white;
}

button {
  width: 100%;
  padding: 12px;
  border-radius: 14px;
  border: none;
  background: #2563eb;
  color: white;
  font-weight: bold;
  cursor: pointer;
  transition: 0.2s;
}

button:hover {
  background: #1d4ed8;
}

.progress-wrapper {
  margin: 20px 0;
  display: flex;
  justify-content: center;
}

.progress-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: conic-gradient(#22c55e 0deg, #1e293b 0deg);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  font-weight: bold;
  transition: 0.6s ease;
}

.result {
  font-size: 14px;
  min-height: 50px;
}

.back {
  display: inline-block;
  margin-top: 20px;
  color: #3b82f6;
  text-decoration: none;
}

.back:hover {
  text-decoration: underline;
}