:root {
  --bg: #ffffff;
  --fg: #0b0b0b;
  --muted: #6a6a6a;
  --line: #e9e9e9;
  --accent: #0a84ff;
  --soft: #f7f7f8;
  --radius: 12px;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: "Noto Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}
.app-header, .app-footer { padding: 20px; border-bottom: 1px solid var(--line); }
.app-footer { border-top: 1px solid var(--line); border-bottom: none; }
h1 { margin: 0 0 6px 0; font-size: 22px; }
p { margin: 0; color: var(--muted); }
.layout {
  display: grid; gap: 20px; padding: 20px;
  grid-template-columns: 360px 1fr;
}
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }
.controls, .outputs {
  background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius);
}
.controls { padding: 16px; }
.outputs { display: flex; flex-direction: column; }
.field { margin-bottom: 14px; }
label { display: block; font-weight: 600; margin-bottom: 6px; }
input, select {
  width: 100%; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: #fff; color: var(--fg);
}
.hint { color: var(--muted); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.divider { height: 1px; background: var(--line); margin: 14px 0; }

button {
  padding: 10px 14px; border-radius: 10px; border: 1px solid var(--fg);
  background: var(--fg); color: #fff; cursor: pointer; transition: transform 120ms ease, opacity 120ms ease;
}
button:hover { transform: translateY(-1px); }
button.ghost { background: transparent; color: var(--fg); border: 1px solid var(--line); }
button.small { padding: 8px 10px; font-size: 12px; }

.pill-multiselect { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  user-select: none; border: 1px solid var(--line); background: #fff;
  padding: 8px 10px; border-radius: 999px; cursor: pointer; font-size: 14px;
}
.pill.active { border-color: var(--accent); box-shadow: inset 0 0 0 2px var(--accent); }

.tabs {
  display: flex; align-items: center; gap: 8px; border-bottom: 1px solid var(--line); padding: 10px;
}
.tab {
  background: transparent; color: var(--fg); border: 1px solid var(--line);
}
.tab.active { border-color: var(--fg); }
.spacer { flex: 1; }
.panel { display: none; padding: 10px; }
.panel.active { display: block; }
pre.mono {
  margin: 0; padding: 16px; background: #fff; border-top: 1px solid var(--line);
  border-radius: 0 0 var(--radius) var(--radius); min-height: 300px;
  font-family: "Space Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap; word-wrap: break-word;
}
.actions { margin-top: 16px; }