:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --border: #e2e8f0;
  --blue: #4285F4;
  --green: #34A853;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  background:
    radial-gradient(circle at 15% 10%, rgba(66,133,244,0.06), transparent 40%),
    radial-gradient(circle at 85% 90%, rgba(52,168,83,0.06), transparent 40%),
    var(--bg);
  color: #1e293b;
  -webkit-font-smoothing: antialiased;
}

.font-mono, code, pre {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}

.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: #334155;
  margin: 0 0 14px 0;
}

.input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  background: #fff;
  color: #1e293b;
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}
.input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(66,133,244,0.15);
}

.iconbtn {
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 0.85rem;
  cursor: pointer;
  color: #64748b;
  transition: background .12s, border-color .12s;
}
.iconbtn:hover { background: #f1f5f9; border-color: #cbd5e1; }

.code-block {
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 10px;
  padding: 16px;
  overflow-x: auto;
  font-size: 0.78rem;
  line-height: 1.55;
  max-height: 70vh;
  overflow-y: auto;
  margin: 0;
  white-space: pre;
  border: 1px solid #1e293b;
}
.code-block code { color: inherit; }

/* Custom scrollbar for code */
.code-block::-webkit-scrollbar { width: 10px; height: 10px; }
.code-block::-webkit-scrollbar-thumb { background: #334155; border-radius: 6px; }
.code-block::-webkit-scrollbar-track { background: #0f172a; }

button { cursor: pointer; }

@media (max-width: 640px) {
  .card { padding: 16px; }
}