/* Go Live: concept styles. Accelerator brand (cream paper, burgundy ink,
   Fraunces voice, Inter information) plus three path colors for the
   system map and seven aspect colors for prompt anatomy.
   Layout: sticky glass nav · editorial column for reading · a field-guide
   grid (sidebar + content) on stage pages. */

:root {
  --paper: #F1F0EC;
  --ink: #641E28;
  --ink-soft: rgba(100, 30, 40, 0.72);
  --ink-faint: rgba(100, 30, 40, 0.5);
  --card: #FFFFFF;
  --sunk: #E9E7E1;
  --burgundy: #9B3741;
  --burgundy-hover: #AA4650;
  --emph: #8C2D37;
  --pill: #F5E1E4;
  --on-burgundy: #FFF5F7;
  --border: rgba(100, 30, 40, 0.12);
  --divider: rgba(100, 30, 40, 0.08);
  --terminal: #2A1A1D;
  --terminal-ink: #F3E4E6;
  --terminal-dim: rgba(243, 228, 230, 0.55);
  --ok: #2E7D46;

  /* system map paths */
  --req: #9B3741;
  --dep: #2F6B5E;
  --fb: #A86F12;
  --ctx: rgba(100, 30, 40, 0.38);

  /* prompt aspects (Class 3: seven aspects of a great prompt) */
  --a-intent: #9B3741;
  --a-style: #7A4E8C;
  --a-audience: #B45A2A;
  --a-tools: #2F6B5E;
  --a-constraints: #3F5F80;
  --a-workflow: #7C6A1F;
  --a-verify: #2E7D46;

  --shadow-card: 0 1px 3px rgba(100, 30, 40, 0.05), 0 1px 2px rgba(100, 30, 40, 0.04);
  --shadow-lift: 0 6px 24px rgba(100, 30, 40, 0.10), 0 1px 3px rgba(100, 30, 40, 0.05);

  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --r-btn: 4px;
  --r-card: 6px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #1A1214; --ink: #F2E3E5; --ink-soft: rgba(242, 227, 229, 0.74); --ink-faint: rgba(242, 227, 229, 0.5);
    --card: #241A1C; --sunk: #2C2023; --burgundy: #C9606B; --burgundy-hover: #D6737D; --emph: #E38B95;
    --pill: #3A2428; --on-burgundy: #1A1214; --border: rgba(242, 227, 229, 0.13); --divider: rgba(242, 227, 229, 0.08);
    --terminal: #0F0A0B; --terminal-ink: #F3E4E6; --terminal-dim: rgba(243, 228, 230, 0.5); --ok: #5DBB7A;
    --req: #D06E78; --dep: #5FAE9C; --fb: #D9A548; --ctx: rgba(242, 227, 229, 0.35);
    --a-intent: #E07F89; --a-style: #B892CC; --a-audience: #E0905F; --a-tools: #5FAE9C;
    --a-constraints: #86A8CC; --a-workflow: #CDB54E; --a-verify: #5DBB7A;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3); --shadow-lift: 0 8px 28px rgba(0, 0, 0, 0.45);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #1A1214; --ink: #F2E3E5; --ink-soft: rgba(242, 227, 229, 0.74); --ink-faint: rgba(242, 227, 229, 0.5);
  --card: #241A1C; --sunk: #2C2023; --burgundy: #C9606B; --burgundy-hover: #D6737D; --emph: #E38B95;
  --pill: #3A2428; --on-burgundy: #1A1214; --border: rgba(242, 227, 229, 0.13); --divider: rgba(242, 227, 229, 0.08);
  --terminal: #0F0A0B; --terminal-ink: #F3E4E6; --terminal-dim: rgba(243, 228, 230, 0.5); --ok: #5DBB7A;
  --req: #D06E78; --dep: #5FAE9C; --fb: #D9A548; --ctx: rgba(242, 227, 229, 0.35);
  --a-intent: #E07F89; --a-style: #B892CC; --a-audience: #E0905F; --a-tools: #5FAE9C;
  --a-constraints: #86A8CC; --a-workflow: #CDB54E; --a-verify: #5DBB7A;
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3); --shadow-lift: 0 8px 28px rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 15px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
::selection { background: rgba(155, 55, 65, 0.22); }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); font-weight: 500; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
h1 em, h2 em, h3 em { font-style: italic; font-weight: 400; color: var(--emph); }
p { margin: 0; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--burgundy); outline-offset: 2px; border-radius: 3px; }

.eyebrow { font: 600 11px/1.2 var(--body); letter-spacing: 2px; text-transform: uppercase; color: var(--ink-faint); }
.mono { font-family: var(--mono); }
.wrap { max-width: 1180px; margin: 0 auto; padding-inline: 20px; }

/* nav */
.nav {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: color-mix(in srgb, var(--paper) 78%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--divider);
}
.nav-in { display: flex; align-items: center; gap: 20px; padding-block: 12px; flex-wrap: wrap; }
.mark { display: flex; flex-direction: column; text-decoration: none; line-height: 1.05; }
.mark b { font: 500 16px var(--display); }
.mark span { font: 600 9px var(--body); letter-spacing: 1.2px; text-transform: uppercase; opacity: 0.7; }
.nav-title { font: 500 15px var(--display); font-style: italic; color: var(--emph); padding-left: 16px; border-left: 1px solid var(--border); }
.nav-links { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.nav-links a { text-decoration: none; font-size: 13.5px; font-weight: 500; padding: 6px 10px; border-radius: var(--r-btn); color: var(--ink-soft); }
.nav-links a:hover, .nav-links a[aria-current="page"] { background: var(--pill); color: var(--ink); }

/* buttons + chips */
.btn { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--border); background: var(--card); border-radius: var(--r-btn); padding: 7px 12px; font-size: 13px; font-weight: 500; cursor: pointer; text-decoration: none; transition: background 150ms, box-shadow 150ms; }
.btn:hover { box-shadow: var(--shadow-card); background: var(--pill); }
.btn.primary { background: var(--burgundy); color: var(--on-burgundy); border-color: transparent; }
.btn.primary:hover { background: var(--burgundy-hover); }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: var(--pill); color: var(--emph); white-space: nowrap; }
.chip.lvl-toy { background: var(--sunk); color: var(--ink-soft); }
.chip.lvl-v1 { background: var(--pill); color: var(--emph); }
.chip.lvl-business { background: var(--ink); color: var(--paper); }
.stage-num { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--border); font: 600 11px var(--body); font-variant-numeric: tabular-nums; flex: none; }

/* cards */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--r-card); box-shadow: var(--shadow-card); }

/* prompt card */
.prompt { overflow: hidden; }
.prompt-head { padding: 18px 20px 14px; display: grid; gap: 6px; border-bottom: 1px solid var(--divider); }
.prompt-head h3 { font-size: 21px; }
.prompt-when { font-size: 13.5px; color: var(--ink-soft); }
.prompt-when b { font-weight: 600; color: var(--ink); }
.prompt-meta { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 2px; }
.tabs { display: flex; gap: 2px; padding: 0 12px; border-bottom: 1px solid var(--divider); background: var(--paper); overflow-x: auto; }
.tab { border: 0; background: none; padding: 10px 12px; font-size: 13px; font-weight: 500; color: var(--ink-soft); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tab[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--burgundy); }
.panel { padding: 18px 20px 20px; }
.prompt-tools { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.prompt-tools .spacer { flex: 1; }
.toggle { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--ink-soft); cursor: pointer; user-select: none; }
.toggle input { accent-color: var(--burgundy); }
.prompt-body { font: 400 14.5px/1.7 var(--body); white-space: pre-wrap; background: var(--paper); border: 1px solid var(--divider); border-radius: var(--r-card); padding: 16px 18px; max-height: 460px; overflow: auto; }
.asp { --c: var(--ink); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--c) 55%, transparent); text-decoration-thickness: 2px; text-underline-offset: 4px; text-decoration-skip-ink: none; }
.asp::before { content: attr(data-n); display: inline-grid; place-items: center; width: 16px; height: 16px; margin-right: 6px; border-radius: 50%; background: var(--c); color: var(--card); font: 700 9.5px/1 var(--body); vertical-align: 2px; text-decoration: none; }
.plain .asp { text-decoration: none; }
.plain .asp::before { display: none; }
.asp-intent { --c: var(--a-intent); } .asp-style { --c: var(--a-style); } .asp-audience { --c: var(--a-audience); }
.asp-tools { --c: var(--a-tools); } .asp-constraints { --c: var(--a-constraints); } .asp-workflow { --c: var(--a-workflow); } .asp-verify { --c: var(--a-verify); }
.var { background: var(--pill); color: var(--emph); border-radius: 3px; padding: 0 4px; font-weight: 600; text-decoration: none; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.var.sample { border-bottom: 1px dashed var(--emph); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 12px; font-size: 12px; color: var(--ink-soft); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 10px; height: 10px; border-radius: 50%; background: var(--c); display: inline-block; }

.example-grid { display: grid; gap: 14px; }
.situation { font-size: 14px; padding: 12px 14px; border-left: 3px solid var(--burgundy); background: var(--paper); border-radius: 0 var(--r-card) var(--r-card) 0; }
.situation .eyebrow { display: block; margin-bottom: 4px; }
.terminal { background: var(--terminal); color: var(--terminal-ink); border-radius: var(--r-card); padding: 14px 16px; font: 400 12.5px/1.65 var(--mono); white-space: pre; overflow-x: auto; }
.terminal .dim { color: var(--terminal-dim); }
.terminal .good { color: #7FD69B; }
.terminal .bad { color: #F0959E; }
.terminal .ask { color: #F2C66D; }
.terminal-bar { display: flex; gap: 6px; margin-bottom: 10px; align-items: center; }
.terminal-bar i { width: 9px; height: 9px; border-radius: 50%; background: rgba(243, 228, 230, 0.18); }
.terminal-bar span { margin-left: 8px; color: var(--terminal-dim); font-size: 11px; }
.result { display: flex; gap: 10px; align-items: baseline; font-size: 14px; }
.result b { color: var(--ok); }
.why { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.why li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; font-size: 14px; }
.why li::before { content: counter(why); counter-increment: why; font: 500 15px var(--display); font-style: italic; color: var(--emph); }
.why { counter-reset: why; }

.copied { font-size: 12px; color: var(--ok); font-weight: 600; }

/* status control (roadmap.sh four states, GOV.UK text labels) */
.status { display: inline-flex; border: 1px solid var(--border); border-radius: var(--r-btn); overflow: hidden; background: var(--card); }
.status button { border: 0; background: none; padding: 4px 9px; font-size: 12px; cursor: pointer; color: var(--ink-soft); }
.status button + button { border-left: 1px solid var(--divider); }
.status button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

/* reduced motion */
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } }

/* ---------- system map ---------- */
.map-frame { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.sysmap { display: block; width: 100%; min-width: 760px; height: auto; font-family: var(--body); }
.lane-label { font: 600 10.5px var(--body); letter-spacing: 1.6px; text-transform: uppercase; }
.edge { fill: none; stroke-width: 1.8; transition: opacity 250ms, stroke-width 250ms; }
.edge-req { stroke: var(--req); }
.edge-dep { stroke: var(--dep); stroke-dasharray: 7 5; }
.edge-fb { stroke: var(--fb); stroke-dasharray: 2 5; stroke-linecap: round; stroke-width: 2.2; }
.edge-ctx { stroke: var(--ctx); stroke-dasharray: 3 4; }
.edge-label text { font: 500 11px var(--body); fill: var(--ink-soft); }
.edge-label rect { fill: var(--paper); }
.lbl-req text { fill: var(--req); } .lbl-dep text { fill: var(--dep); } .lbl-fb text { fill: var(--fb); }
.node { cursor: pointer; transition: opacity 250ms; outline: none; }
.node-box { fill: var(--card); stroke: var(--border); stroke-width: 1; transition: stroke 150ms; filter: drop-shadow(0 1px 1.5px rgba(100, 30, 40, 0.08)); }
.node-actor .node-box { fill: var(--sunk); stroke-dasharray: 3 3; }
.node:hover .node-box, .node:focus-visible .node-box, .node.selected .node-box { stroke: var(--burgundy); stroke-width: 1.6; }
.node-label { font: 600 13px var(--body); fill: var(--ink); }
.node[data-id="app"] .node-label { font: 500 18px var(--display); }
.node-sub { font: 400 10.5px var(--body); fill: var(--ink-faint); }
.node-stage { fill: var(--ink); }
.node-stage-n { font: 700 10px var(--body); fill: var(--paper); }
.node-done { display: none; }
.node-done circle { fill: var(--ok); }
.node-done path { fill: none; stroke: var(--card); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.node.is-done .node-done { display: inline; }
.off { opacity: 0.08; }
.sysmap.touring .edge:not(.on), .sysmap.touring .node:not(.on), .sysmap.touring .edge-label:not(.on) { opacity: 0.22; }
.sysmap.touring .edge.on { stroke-width: 3; opacity: 1; }
.sysmap.focusing .node:not(.lit) { opacity: 0.25; }
.sysmap.focusing .edge { opacity: 0.25; }
.sysmap.focusing .node.lit .node-box { stroke: var(--burgundy); stroke-width: 2; }
.token { filter: drop-shadow(0 0 6px currentColor); stroke: var(--card); stroke-width: 2.5; }

/* form fields */
.field { display: grid; gap: 4px; font-size: 12px; font-weight: 600; color: var(--ink-soft); }
.field input { font: 400 14px var(--body); color: var(--ink); background: var(--paper); border: 1px solid var(--border); border-radius: var(--r-btn); padding: 8px 10px; width: 100%; min-width: 0; }
.field input:focus { outline: none; border-color: var(--burgundy); background: var(--card); }
.sample-tag { font-style: normal; font-weight: 600; font-size: 10px; letter-spacing: 1px; text-transform: uppercase; color: var(--emph); background: var(--pill); padding: 1px 6px; border-radius: 999px; margin-left: 4px; }