:root {
  --bg: #f2efe9;
  --panel: #ffffff;
  --ink: #1b1b1b;
  --accent: #0b6e4f;
  --muted: #6b6b6b;
  --border: #ded6c9;
  --shadow: 0 12px 30px rgba(27, 27, 27, 0.08);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

body {
  margin: 0;
  background: radial-gradient(circle at top left, #f8f3ea 0%, #f2efe9 50%, #e9e4db 100%);
  color: var(--ink);
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

.hero {
  background: linear-gradient(120deg, #0b6e4f 0%, #178f6a 60%, #0b6e4f 100%);
  color: #fdfcf9;
  padding: 26px 30px;
  border-radius: 18px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 30px;
}

.panel {
  background: var(--panel);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.panel h2 {
  margin-top: 0;
}

.subtitle {
  color: var(--muted);
  font-size: 14px;
  font-style: italic;
  margin: 0 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

form {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 8px;
  font-weight: 600;
}

input[type="text"],
textarea {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
  background: #fcfbf8;
}

button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 12px 18px;
  border-radius: 10px;
  font-weight: 700;
  cursor: pointer;
  justify-self: start;
}

button:hover {
  filter: brightness(1.05);
}

.status {
  margin-top: 12px;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

pre {
  background: #f6f2ea;
  padding: 12px;
  border-radius: 10px;
  border: 1px dashed var(--border);
  max-height: 340px;
  overflow: auto;
  font-size: 12px;
  white-space: pre-wrap;
  transition: opacity 0.3s ease;
  margin: 0 0 8px 0;
}

pre.loading {
  opacity: 0.5;
  color: var(--muted);
}

pre.readable {
  font-size: 14px;
  line-height: 1.5;
}

.with-toggle {
  position: relative;
}

.toggle-json-btn {
  display: block;
  background: #f0f0f0;
  color: var(--ink);
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  font-size: 12px;
  justify-self: start;
}

.toggle-json-btn:hover {
  background: #e8e8e8;
}

@media (max-width: 720px) {
  .hero {
    padding: 20px;
  }

  .panel {
    padding: 18px;
  }
}