/* PG1 tools playground. Colours follow the dark tokens in public/index.html
   and public/about; the result card mirrors the chat's tool card. Loaded as
   a file because the page's Content-Security-Policy allows no inline
   styles or scripts. */
:root {
  color-scheme: dark;
  --bg: #0a0a0b;
  --surface-1: #121214;
  --surface-2: #1a1a1e;
  --border: #26262b;
  --border-strong: #3a3a42;
  --text: #ececee;
  --text-2: #a8a8b0;
  --text-3: #8a8a94;
  --text-strong: #fff;
  --gold: #f3c623;
  --gold-strong: #ffd84d;
  --gold-soft: rgba(243, 198, 35, 0.12);
  --gold-line: rgba(243, 198, 35, 0.45);
  --ok: #4ade80;
  --ok-soft: rgba(74, 222, 128, 0.1);
  --warn-text: #fbbf24;
  --warn-soft: rgba(251, 191, 36, 0.1);
  --warn-line: rgba(251, 191, 36, 0.45);
  --danger-text: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.1);
  --danger-line: rgba(248, 113, 113, 0.45);
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Roboto Mono", "Liberation Mono", monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
}
[hidden] { display: none !important; }
main {
  max-width: 40rem;
  margin: 0 auto;
  padding: max(1.25rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) 2.5rem max(1rem, env(safe-area-inset-left));
}
.pg-header { display: flex; align-items: center; gap: 0.875rem; margin: 0.25rem 0 1.25rem; }
.pg-header svg { flex: none; width: 3rem; height: 3rem; }
h1 { margin: 0; font-size: 1.5rem; line-height: 1.25; color: var(--text-strong); }
.sub { margin: 0.125rem 0 0; color: var(--text-2); font-size: 0.9375rem; }

.pg-form { display: flex; flex-direction: column; gap: 1rem; }
.pg-tools { margin: 0; padding: 0; border: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.pg-tools legend { padding: 0; margin-bottom: 0.5rem; color: var(--gold); font-weight: 600; font-size: 0.9375rem; }
.pg-tool {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  min-height: 4.25rem;
  padding: 0.75rem;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  cursor: pointer;
}
.pg-tool input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.pg-tool-name { font-weight: 600; color: var(--text-strong); font-size: 0.9375rem; }
.pg-tool-desc { color: var(--text-2); font-size: 0.8125rem; }
.pg-tool:has(input:checked) { border-color: var(--gold); background: var(--gold-soft); }
.pg-tool:has(input:focus-visible) { outline: 2px solid var(--gold); outline-offset: 2px; }

.pg-field { display: flex; flex-direction: column; gap: 0.375rem; }
.pg-field label { color: var(--gold); font-weight: 600; font-size: 0.9375rem; }
.pg-field input, .pg-field select {
  width: 100%;
  min-height: 3rem;
  padding: 0 0.875rem;
  background: var(--surface-1);
  border: 1px solid var(--border-strong);
  border-radius: 0.625rem;
  color: var(--text);
  font: inherit;
  font-family: var(--font-mono);
  font-size: 1rem;
}
.pg-field select { font-family: var(--font-sans); }
.pg-field input:focus-visible, .pg-field select:focus-visible { outline: 2px solid var(--gold); outline-offset: 1px; border-color: var(--gold-line); }
.pg-hint { margin: 0; color: var(--text-3); font-size: 0.8125rem; }

.pg-run {
  min-height: 3rem;
  border: 0;
  border-radius: 0.75rem;
  background: var(--gold);
  color: #0a0a0b;
  font: inherit;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
}
.pg-run:hover { background: var(--gold-strong); }
.pg-run:focus-visible { outline: 2px solid var(--text-strong); outline-offset: 2px; }
.pg-run[disabled] { opacity: 0.6; cursor: progress; }

.pg-result { margin-top: 1.25rem; }
.pg-message {
  margin: 0;
  padding: 0.75rem 1rem;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  color: var(--text-2);
  font-size: 0.9375rem;
}
.pg-message.is-error { color: var(--danger-text); border-color: var(--danger-line); }
.pg-message code { font-family: var(--font-mono); font-size: 0.8125rem; color: var(--text); overflow-wrap: anywhere; }

/* Result card: same structure and colours as the chat's tool card. */
.tool-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.875rem 1rem;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 0.875rem;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--text-2);
}
.tool-card-head { display: flex; align-items: center; gap: 0.5rem; min-width: 0; }
.tool-card-title { flex: 1 1 auto; min-width: 0; font-weight: 600; color: var(--text-strong); overflow-wrap: anywhere; }
.tool-card-sep { color: var(--text-3); font-weight: 400; }
.tool-card-subject { font-family: var(--font-mono); font-size: 0.8125rem; font-weight: 400; color: var(--text-2); }
.tool-chip {
  flex: none;
  padding: 2px 0.5rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--text);
  background: var(--surface-2);
}
.tool-chip.is-flagged, .tool-chip.is-failed { color: var(--danger-text); background: var(--danger-soft); border-color: var(--danger-line); }
.tool-chip.is-clear { color: var(--ok); background: var(--ok-soft); border-color: var(--ok); }
.tool-chip.is-unknown { color: var(--warn-text); background: var(--warn-soft); border-color: var(--warn-line); }
.tool-note { margin: 0; color: var(--text-2); }
.tool-card.is-unknown .tool-note, .tool-card.is-failed .tool-note { color: var(--warn-text); }
.tool-error { margin: 0; color: var(--danger-text); }
.tool-fields { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 2px 0.75rem; margin: 0; }
.tool-field { display: contents; }
.tool-fields dt { color: var(--text-3); white-space: nowrap; }
.tool-fields dd { margin: 0; min-width: 0; color: var(--text); overflow-wrap: anywhere; }
.tool-reasons, .tool-checks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.tool-reasons li { color: var(--text); overflow-wrap: anywhere; }
.tool-reasons code, .tool-meta code { font-family: var(--font-mono); font-size: 0.8125rem; color: var(--text); overflow-wrap: anywhere; }
.tool-checks li { display: flex; flex-wrap: wrap; gap: 0 0.5rem; color: var(--text-3); font-size: 0.8125rem; }
.tool-checks li.is-incomplete .tool-check-result { color: var(--warn-text); }
.tool-check-source { color: var(--text-2); }
.tool-check-result::before, .tool-check-asof::before { content: "·"; margin-right: 0.5rem; }
.tool-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0 0.5rem; font-size: 0.8125rem; color: var(--text-3); overflow-wrap: anywhere; }
.tool-fixture { padding: 0 0.5rem; border: 1px solid var(--border-strong); border-radius: 999px; color: var(--text-2); }

footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.875rem;
}
a { color: var(--gold-strong); text-underline-offset: 0.15em; }
a:hover { color: var(--text-strong); }
a:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; border-radius: 2px; }

@media (min-width: 768px) {
  h1 { font-size: 1.75rem; }
  .pg-header svg { width: 3.75rem; height: 3.75rem; }
  .pg-tools { grid-template-columns: repeat(4, 1fr); }
}
@media (forced-colors: active) {
  .pg-tool:has(input:checked) { outline: 2px solid Highlight; }
}