* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #111827;
  background: #f6f7fb;
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.panel {
  width: min(360px, 100%);
  display: grid;
  justify-items: center;
  gap: 14px;
  padding: 28px 22px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 12px 36px rgba(15, 23, 42, 0.08);
  text-align: center;
}

.spinner {
  width: 34px;
  height: 34px;
  border: 3px solid #e5e7eb;
  border-top-color: #2563eb;
  border-radius: 999px;
  animation: spin 0.8s linear infinite;
}

h1 {
  margin: 0;
  font-size: 22px;
  line-height: 1.3;
}

p {
  margin: 0;
  min-height: 22px;
  color: #4b5563;
  font-size: 15px;
  line-height: 1.5;
}

button {
  border: 0;
  border-radius: 6px;
  padding: 10px 14px;
  background: #2563eb;
  color: #ffffff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button[hidden] {
  display: none;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}