* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: white;
  min-height: 100vh;
  padding: 20px;
}
.title {
  text-align: center;
  margin-bottom: 25px;
}
.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.card {
  background: #1e293b;
  padding: 24px;
  border-radius: 14px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.4);
}
.card h2 {
  margin-bottom: 12px;
}
input {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  border-radius: 8px;
  border: none;
  outline: none;
}
button {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: none;
  background: #38bdf8;
  color: black;
  font-weight: bold;
  cursor: pointer;
}
button:hover {
  background: #0ea5e9;
}
.output {
  margin-top: 12px;
  font-size: 0.95rem;
  opacity: 0.85;
}