* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 16px;
  color: #142033;
  background: #f3f5f8;
  font: 14px/1.45 "Segoe UI", sans-serif;
}

header h1, .home h1, h2 {
  margin: 0 0 4px;
  font-size: 20px;
  color: #1b365d;
}

header p, .home p, .note, .setup {
  margin: 0 0 12px;
  color: #3d4b60;
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
}

textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #c5ceda;
  border-radius: 6px;
  resize: vertical;
  font: inherit;
  background: #fff;
}

.actions, #result button {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

button {
  flex: 1;
  border: 0;
  border-radius: 6px;
  padding: 9px 10px;
  background: #1b365d;
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button.secondary {
  background: #fff;
  color: #1b365d;
  border: 1px solid #1b365d;
}

button:disabled {
  opacity: 0.55;
  cursor: default;
}

#status {
  min-height: 1.2em;
  margin: 10px 0;
}

#status.error { color: #8a1f1f; }

#preview {
  max-height: 42vh;
  overflow: auto;
  padding: 10px;
  border-radius: 6px;
  background: #fff;
  white-space: pre-wrap;
  border: 1px solid #d5dce6;
}

.home {
  max-width: 38rem;
}

.home a { color: #1b365d; }