/* Fastino demo palette: cool paper, violet-black ink, orange identity, purple
   support. Orange is the brand accent; purple must stay subordinate. */
@import url("https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&display=swap");
/* 0xProto Nerd: not on Google Fonts, use the Nerd Fonts CDN, fall back gracefully */
@import url("https://www.nerdfonts.com/assets/css/webfont.css");

:root {
  --paper: #F4F6F8;          /* page background */
  --card: #FFFFFF;           /* panel fills */
  --greige: #ECEFF3;         /* hover fills, subtle blocks */
  --ash: #E0E5EA;            /* borders, dividers */
  --ink: #100E1C;            /* violet-black, headings + body */
  --ink-soft: rgba(16, 14, 28, 0.68);
  --ink-faint: #5F6874;      /* AA 4.8:1 on paper, 5.2 on card */
  --warm-gray: #B8BFC7;      /* border accents */
  --orange: #FF6A2A;         /* identity: fills, active strokes. Never on text. */
  --orange-deep: #C14A00;    /* orange when it must be text on light bg; AA 4.7:1 */
  --purple: #7038FF;         /* support accent: hover, focus, span hue */
  --ok: #0C7A4C;
  --ok-bg: rgba(12, 122, 76, 0.12);
  --neg: #C2183B;
  --neg-bg: rgba(194, 24, 59, 0.10);
  --neu: #55606E;
  --neu-bg: rgba(85, 96, 110, 0.10);

  --font-head: "Geist", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Geist", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "0xProto Nerd Font", "0xProto Nerd", "JetBrains Mono", ui-monospace, Menlo, monospace;

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --radius: 10px;
  --radius-s: 6px;

  /* span label palette; always paired with a text label */
  --c0: #FF6A2A; --c1: #7038FF; --c2: #0B7A78; --c3: #C2183B;
  --c4: #4B4FE0; --c5: #8A6100; --c6: #0B68C2; --c7: #6E5B3E;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1160px; margin: 0 auto; padding: 32px 22px 56px; }

/* ---- intro ---- */
.site-intro { display: flex; align-items: flex-end; gap: 24px; }
.intro-copy { flex: 1; min-width: 0; }
.site-intro h1 {
  font-family: var(--font-head); font-weight: 700;
  font-size: 34px; letter-spacing: -0.015em; line-height: 1.15;
}
.site-intro h1 em { font-style: normal; color: var(--orange-deep); }
.site-intro .sub { margin-top: 6px; color: var(--ink-soft); font-size: 15px; max-width: 56ch; }
.intro-mascot { flex-shrink: 0; user-select: none; -webkit-user-drag: none; }
@media (max-width: 860px) { .intro-mascot { width: 84px; height: 84px; align-self: flex-start; } }

/* ---- workspace ---- */
.workspace { display: grid; grid-template-columns: 5fr 7fr; gap: 16px; align-items: start; }
.workspace.single { grid-template-columns: 1fr; }
.card {
  background: var(--greige); border: 1px solid var(--ash); border-radius: var(--radius);
  display: flex; flex-direction: column;
}
.panel-header {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
  padding: 13px 16px 10px; border-bottom: 1px solid var(--ash);
}
.panel-header h2 { font-size: 14px; font-weight: 600; }
.panel-header p { font-size: 12px; color: var(--ink-faint); margin-top: 1px; }

textarea, .editor {
  flex: 1; width: 100%; border: 0; resize: vertical; min-height: 160px;
  padding: 14px 16px; background: var(--card);
  font: inherit; color: var(--ink); border-radius: 0 0 var(--radius) var(--radius);
}
textarea:focus, .editor:focus { outline: 2px solid var(--ash); outline-offset: -2px; }
textarea:focus-visible { outline: 2px solid var(--orange-deep); }

/* ---- example selector: pill chips ---- */
.examples-panel { margin: 44px 0 14px; }
.examples-label {
  font-size: 11px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint); display: block; margin-bottom: 8px;
}
.example-list { display: flex; flex-wrap: wrap; gap: 8px; }
.ex {
  font: inherit; font-size: 13px; font-weight: 500; color: var(--ink);
  background: var(--card); border: 1px solid var(--ash); border-radius: 99px;
  padding: 6px 14px; cursor: pointer;
  transition: background 140ms var(--ease-out), border-color 140ms var(--ease-out), transform 80ms var(--ease-out);
}
.ex:hover { background: var(--greige); border-color: var(--warm-gray); }
.ex:active { transform: scale(0.97); }
.ex:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }
.ex.active {
  background: var(--ink); color: var(--paper); border-color: var(--ink);
}

/* ---- output body ---- */
.output-body {
  flex: 1; padding: 14px 16px; background: var(--card);
  font-size: 15px; line-height: 1.95; white-space: pre-wrap; word-break: break-word;
  overflow-y: auto;
}
.output-empty { color: var(--ink-faint); font-size: 13.5px; }
.output-empty strong { display: block; color: var(--ink-soft); font-weight: 600; font-size: 15px; margin-bottom: 4px; }

/* ---- inline span highlighting (staggered reveal) ---- */
.span {
  border-radius: var(--radius-s); padding: 1px 2px; margin: 0 1px;
  background: color-mix(in srgb, var(--span-color) 20%, transparent);
  border-bottom: 2px solid var(--span-color);
  cursor: pointer; position: relative;
  opacity: 0; transform: translateY(3px);
  animation: span-in 380ms var(--ease-out) forwards;
  animation-delay: calc(var(--i) * 55ms);
  transition: background 140ms var(--ease-out);
}
.span:hover { background: color-mix(in srgb, var(--span-color) 30%, transparent); }
.span.selected {
  background: color-mix(in srgb, var(--span-color) 40%, transparent);
  box-shadow: 0 0 0 1px var(--span-color);
}
@keyframes span-in { to { opacity: 1; transform: translateY(0); } }

/* attribute badges attached inline after a span; tone colors resolved in JS
   (semantic tone wins, else the span's label color at low alpha) */
.attr {
  display: inline-block; vertical-align: super;
  font-family: var(--font-mono); font-size: 10px; font-weight: 600;
  border-radius: 3px; padding: 0 4px; margin-left: 2px; line-height: 1.7;
  color: var(--badge-text); background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  opacity: 0; animation: span-in 320ms var(--ease-out) forwards;
  animation-delay: calc(var(--i) * 55ms + 160ms);
}

/* ---- span inspector (detail panel under the text) ---- */
.inspector {
  border-top: 1px solid var(--ash);
  padding: 12px 16px 14px;
  background: var(--card);
  border-radius: 0 0 var(--radius) var(--radius);
}
.inspector-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 10px; }
.inspector-head .span-text { font-size: 16px; font-weight: 600; }
.inspector-head .span-label {
  font-family: var(--font-mono); font-size: 12px; font-weight: 600;
  color: var(--span-color, var(--ink)); background: color-mix(in srgb, var(--span-color, var(--warm-gray)) 14%, transparent);
  border: 1px solid var(--span-color, var(--warm-gray));
  border-radius: var(--radius-s); padding: 1px 7px;
}
.inspector-head .span-score { font-family: var(--font-mono); font-size: 12px; color: var(--ink-faint); margin-left: auto; }
.inspector-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(168px, 1fr)); gap: 10px; }
.attr-group { border: 1px solid var(--ash); border-radius: var(--radius-s); padding: 9px 11px; background: var(--greige); }
.attr-group-name { font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 7px; }
.attr-row { display: flex; align-items: baseline; gap: 8px; font-size: 13px; padding: 2px 0; }
.attr-row .attr-label { font-weight: 500; }
.attr-row .attr-score { margin-left: auto; font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint); }
.attr-meter { height: 3px; border-radius: 2px; background: var(--ash); margin-top: 3px; overflow: hidden; }
.attr-meter i { display: block; height: 100%; background: var(--span-color, var(--orange)); border-radius: 2px; }

/* ---- legend / stats footer ---- */
.controls { padding: 10px 16px 13px; border-top: 1px solid var(--ash); display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.legend-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 500; color: var(--ink);
  background: var(--paper); border: 1px solid var(--ash); border-radius: 99px; padding: 3px 10px; cursor: pointer;
}
.legend-swatch { width: 9px; height: 9px; border-radius: 3px; background: var(--span-color); }
.legend-count { font-family: var(--font-mono); color: var(--ink-faint); font-size: 11px; }
.stats { display: flex; gap: 18px; margin-left: auto; font-size: 12px; color: var(--ink-faint); }
.stats strong { font-family: var(--font-mono); font-weight: 500; color: var(--ink); margin-left: 4px; }

/* ---- schema code: notebook cell ---- */
.code-toggle {
  font: inherit; font-size: 12px; font-weight: 500; color: var(--ink-soft);
  background: var(--paper); border: 1px solid var(--ash); border-radius: var(--radius-s);
  padding: 4px 11px; cursor: pointer; display: inline-flex; align-items: center; gap: 5px;
  transition: background 160ms var(--ease-out);
}
.code-toggle:hover { background: var(--greige); }
.code-toggle:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }

.code-cell {
  margin: 0 16px 14px; padding: 0;
  background: var(--card); border: 1px solid var(--ash); border-radius: var(--radius);
  overflow: hidden;
}
.code-cell-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px 8px;
  border-bottom: 1px solid var(--ash);
}
.cell-prompt {
  font-family: var(--font-mono); font-size: 12px; font-weight: 500;
  color: var(--ink-faint); flex-shrink: 0;
}
.copy-btn {
  margin-left: auto; font: inherit; font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-soft); background: var(--paper); border: 1px solid var(--ash);
  border-radius: 4px; padding: 3px 10px; cursor: pointer;
  transition: background 140ms var(--ease-out), border-color 140ms var(--ease-out);
}
.copy-btn:hover { background: var(--greige); border-color: var(--warm-gray); }
.copy-btn:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }
.copy-done { color: var(--ok); }

.code-panel {
  margin: 0; padding: 12px 14px;
  background: var(--card); color: var(--ink);
  font-family: var(--font-mono); font-size: 12.5px; line-height: 1.6;
  white-space: pre; overflow-x: auto;
}

.cell-out {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 14px 10px; border-top: 1px solid var(--ash);
  background: var(--paper);
}
.cell-out-hint {
  font-family: var(--font-mono); font-size: 12px; color: var(--warm-gray);
}

.footnote { margin-top: 20px; font-size: 12px; color: var(--ink-faint); }
.footnote a { color: var(--ink-soft); }
.labs-mark { color: var(--ink); font-weight: 500; text-decoration: none; border-bottom: 1px solid var(--ash); }
.labs-mark:hover { color: var(--orange-deep); border-bottom-color: var(--orange-deep); }

@media (max-width: 860px) {
  .workspace { grid-template-columns: 1fr; }
  .inspector-groups { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}