:root {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #0b0f17;
  color: #e8eefc;
}

.card {
  width: min(520px, 92vw);
  background: #111827;
  border: 1px solid #243044;
  border-radius: 16px;
  padding: 24px;
}

h1 {
  margin: 0 0 8px;
  font-size: 34px;
  letter-spacing: 0.2px;
}

p {
  margin: 0 0 16px;
  color: #b9c4da;
}

form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

input,
select {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #2a3a55;
  background: #0f172a;
  color: #e8eefc;
  outline: none;
}

input::placeholder {
  color: #8ea0c0;
}

button {
  padding: 12px 16px;
  border-radius: 12px;
  border: 0;
  background: #3b82f6;
  color: white;
  cursor: pointer;
  font-weight: 700;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.msg {
  min-height: 22px;
  margin-top: 10px;
}

.msg.ok {
  color: #86efac;
}

.msg.err {
  color: #fca5a5;
}