/* internals skin: matches the playground palette so the suite reads as one product */

:root {
  /* re-map the shared tokens so the live AST viewer picks up this palette */
  --ll-bg: #0b1020;
  --ll-surface: #111827;
  --ll-surface-2: #1f2937;
  --ll-border: #374151;
  --ll-text: #e5e7eb;
  --ll-muted: #7a86b4;
  --ll-accent: #7a81ff;
  --ll-accent-ink: #0b1020;
  --ll-positive: #5cffaa;
  --ll-danger: #ff6b81;
  --ll-radius-md: 12px;
}

body {
  margin: 0;
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0b1020;
  color: #e5e7eb;
}

main {
  max-width: 1080px;
  margin: 20px auto 32px;
  padding: 0 16px;
}

/* same construction as the playground banner: two edge-anchored crops
   of one lockup, only the purple middle stretches */
.brand-banner {
  --brand-h: 130px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: calc(var(--brand-h) + 20px);
  border: 1px solid #7a81ff;
  border-radius: 14px;
  background: #7a81ff;
  padding: 0 10px;
}
.brand-mark {
  height: var(--brand-h);
  background: url("../images/logo-compact.svg") no-repeat;
  background-size: auto 100%;
}
.brand-mark-word { width: calc(var(--brand-h) * 2.02); background-position: left center; }
.brand-mark-shapes { width: calc(var(--brand-h) * 1.4); background-position: right center; }
@media (max-width: 640px) {
  .brand-banner { --brand-h: 96px; }
}

.page-head { margin-top: 24px; text-align: center; }
.page-head h1 { margin: 0; font-size: 22px; font-weight: 700; }
.page-head .lede {
  color: #dde3ff;
  font-size: 15px;
  line-height: 1.6;
  margin: 8px 0 0;
  max-width: 100ch;
  text-align: left;
}
.page-head .lede strong { color: #b9c0ff; }

.pipeline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 16px 0 0;
  font: 12.5px/1 "SF Mono", ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace;
}
.pipeline .stage {
  padding: 6px 11px;
  border-radius: 999px;
  border: 1px solid #374151;
  background: #111827;
  color: #b9c0ff;
}
.pipeline .stage.live {
  border-color: #7a81ff;
  box-shadow: 0 0 0 1px rgba(122, 129, 255, 0.2), 0 0 10px rgba(122, 129, 255, 0.28);
}
.pipeline .arrow { color: #3a4575; }

section { margin-top: 36px; }
section h2 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 9px;
}
section .hint {
  color: #aeb5e9;
  font-size: 13.5px;
  line-height: 1.6;
  margin: 6px 0 16px;
  max-width: 84ch;
}

/* tree-sitter attribution badge */
.ts-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  padding: 4px 10px 4px 6px;
  border-radius: 999px;
  border: 1px solid #374151;
  background: #111827;
  font: 600 11px/1 "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  color: #aeb5e9;
  text-decoration: none;
}
.ts-badge img { width: 16px; height: 16px; display: block; }
.ts-badge:hover { border-color: #7a81ff; color: #b9c0ff; }

/* ── live AST explorer ─────────────────────────────────────────────── */

/* both heads share one grid row, so the pane labels always line up */
.pane-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px;
  min-height: 24px;
}
.pane-head .pane-label { margin-bottom: 0; }

/* the anonymous-nodes toggle matches the preset pills, with a real switch */
.ll-ast-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 10px 4px 6px;
  border-radius: 999px;
  border: 1px solid #374151;
  background: #111827;
  color: #aeb5e9;
  font: 600 11px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.ll-ast-toggle:hover { color: #b9c0ff; border-color: #4b5563; }
.ll-ast-toggle:has(input:checked) { color: #b9c0ff; border-color: #7a81ff; }
.ll-ast-toggle input {
  appearance: none;
  margin: 0;
  width: 26px;
  height: 15px;
  border-radius: 999px;
  background: #1f2937;
  border: 1px solid #374151;
  position: relative;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.ll-ast-toggle input::before {
  content: "";
  position: absolute;
  top: 1px;
  left: 1px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #7a86b4;
  transition: transform 0.2s ease, background 0.2s ease;
}
.ll-ast-toggle input:checked { background: #2b2f66; border-color: #7a81ff; }
.ll-ast-toggle input:checked::before { transform: translateX(11px); background: #7a81ff; }
#ast-presets { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; }
.ast-preset {
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid #374151;
  background: #111827;
  color: #aeb5e9;
  font: 600 11px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.ast-preset:hover { color: #b9c0ff; border-color: #4b5563; }
.ast-preset.active {
  color: #b9c0ff;
  background: #1f2547;
  border-color: #7a81ff;
  box-shadow: 0 0 0 1px rgba(122, 129, 255, 0.2), 0 0 8px rgba(122, 129, 255, 0.28);
}

.explorer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: auto 460px;
  gap: 8px 16px;
}
.explorer .pane { display: flex; flex-direction: column; min-height: 0; }
.explorer .pane-label {
  font: 700 11px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7a86b4;
  margin-bottom: 8px;
}
.explorer .tree-wrap {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  border-radius: 12px;
  border: 1px solid #374151;
  background: #111827;
  overflow: hidden;
}
.explorer .tree-wrap > #ast-tree { flex: 1 1 0; min-width: 0; display: flex; }
#ast-editor { flex: 1 1 0; min-height: 0; display: flex; flex-direction: column; }

@media (max-width: 860px) {
  .explorer { grid-template-columns: 1fr; grid-template-rows: auto; }
  .explorer .pane { height: 320px; }
  .explorer > :nth-child(1) { order: 1; }
  .explorer > :nth-child(3) { order: 2; }
  .explorer > :nth-child(2) { order: 3; }
  .explorer > :nth-child(4) { order: 4; }
}

/* ── grammar reference ─────────────────────────────────────────────── */

.diagram-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}
.diagram-card {
  border-radius: 12px;
  border: 1px solid #374151;
  background: #f8f8fb;
  padding: 14px 16px;
  overflow: auto;
}
.diagram-card h3 {
  margin: 0 0 10px;
  font: 600 13px/1 "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  color: #374151;
}
.diagram-card svg { display: block; max-width: 100%; height: auto; }

.reference-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 10px 16px;
  border-radius: 999px;
  background: #7a81ff;
  color: #0b1020;
  font-weight: 700;
  font-size: 13px;
  text-decoration: none;
  transition: filter 0.15s ease;
}
.reference-cta:hover { filter: brightness(1.08); }

/* ── footer, matches the playground impressum ─────────────────────────── */

.impressum {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid #1e2742;
  text-align: center;
  color: #6b76a8;
}
.impressum-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
}
.impressum-mark { font-weight: 700; color: #b9c0ff; letter-spacing: 0.01em; }
.impressum-ver {
  font: 11.5px/1 "SF Mono", ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace;
  padding: 2px 7px;
  border-radius: 999px;
  background: #1f2547;
  color: #b9c0ff;
}
.impressum-sep { color: #3a4575; }
.impressum-line { color: #6b76a8; font-size: 12.5px; line-height: 1.6; margin: 8px 0 0; }
.impressum-line a {
  color: #8b93c8;
  text-decoration: none;
  border-bottom: 1px solid #2b345c;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.impressum-line a:hover { color: #b9c0ff; border-color: #7a81ff; }