:root {
  color-scheme: light dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.4;
  background: #0b0f14;
  color: #e6edf3;
}

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 20px;
}

.header {
  margin-bottom: 16px;
}

.card {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 14px;
  margin: 12px 0;
  background: rgba(255, 255, 255, 0.04);
}

h1 {
  margin: 0 0 6px;
  font-size: 22px;
}

h2 {
  margin: 0 0 10px;
  font-size: 16px;
}

.muted {
  opacity: 0.75;
}

.small {
  font-size: 12px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.label {
  font-size: 12px;
  opacity: 0.75;
}

.value {
  font-size: 14px;
  margin-top: 2px;
  word-break: break-word;
}

.pre {
  margin: 0;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.35);
  overflow: auto;
}

.row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 10px 0;
}

.btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: inherit;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.10);
}

.btn-primary {
  border-color: rgba(69, 177, 255, 0.55);
}

.btn-danger {
  border-color: rgba(255, 99, 99, 0.55);
}

.input {
  flex: 1;
  min-width: 260px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(0, 0, 0, 0.25);
  color: inherit;
}

.footer {
  margin-top: 14px;
  font-size: 12px;
}

@media (prefers-color-scheme: light) {
  body {
    background: #f6f8fa;
    color: #111827;
  }

  .card {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(0, 0, 0, 0.10);
  }

  .pre {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.10);
  }

  .btn {
    border-color: rgba(0, 0, 0, 0.12);
    background: rgba(0, 0, 0, 0.02);
  }

  .btn:hover {
    background: rgba(0, 0, 0, 0.05);
  }

  .input {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(0, 0, 0, 0.12);
  }
}