/*
 * diagrams.css — the in-repo diagram & animation system.
 *
 * Self-contained inline-SVG diagrams authored directly in content/*.md.
 * The visual language (role-color palette, edge semantics, motion vocabulary)
 * is ported from the agenticloops "graphics" design system, mapped onto this
 * site's existing terracotta theme. No framework, no runtime dependency.
 *
 * Principle: every diagram is fully readable as a STATIC image. Animation is
 * progressive enhancement, gated to when the diagram scrolls into view
 * (diagrams.js adds .in-view) and disabled under prefers-reduced-motion.
 */

:root {
  /* Semantic role palette — same meaning in every diagram.
     model = the thinking core · action = tools/hands · data = content
     io = the human / outside boundary · safety = a checkpoint */
  --d-model: #2e5c7a;   /* slate  — llm / brain / decide          */
  --d-action: var(--accent); /* terracotta — tool / skill / hands  */
  --d-data: #7a4d6f;    /* mulberry — memory / files / result      */
  --d-io: #5c5c57;      /* graphite — you / output                 */
  --d-safety: #b8762e;  /* amber — guardrail / blocked             */
  --d-ok: #5c7a4d;      /* sage — success / done                   */

  --d-model-bg: rgba(46, 92, 122, 0.08);
  --d-action-bg: rgba(193, 95, 60, 0.09);
  --d-data-bg: rgba(122, 77, 111, 0.08);
  --d-io-bg: rgba(92, 92, 87, 0.06);
  --d-safety-bg: rgba(184, 118, 46, 0.09);
  --d-ok-bg: rgba(92, 122, 77, 0.08);

  --d-paper: #fcfbfa;
  --d-stroke: 1.6px;
  --d-radius: 9px;
}

/* ---------- Figure wrapper ---------- */
.markdown .diagram {
  margin: 26px 0;
  padding: 14px 16px 6px;
  background: var(--d-paper);
  border: 1px solid var(--border);
  border-radius: 14px;
}
.diagram svg {
  display: block;
  width: 100%;
  height: auto;
}
.diagram figcaption {
  margin: 6px 4px 8px;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
}
.diagram[data-sequence] { cursor: pointer; }
.diagram[data-sequence] figcaption::after {
  content: " · tap to replay";
  opacity: 0.55;
  font-size: 11.5px;
}

/* ---------- SVG text ---------- */
.diagram text { font-family: inherit; fill: var(--text); }
/* NOTE: a CSS font-size here overrides any inline font-size="" attribute on the
   same element (CSS beats SVG presentation attributes). These class sizes are the
   real rendered sizes — tune text fit here, not via per-element attributes. */
.diagram .d-label { font-size: 13.5px; font-weight: 600; }
.diagram .d-sub {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  fill: var(--text-muted);
}
.diagram .d-mono {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 10.5px;
  fill: var(--text-muted);
}
.diagram .d-edge-label { font-size: 11px; fill: var(--text-muted); }

/* ---------- Node cards ---------- */
.diagram .d-card { fill: var(--bg); stroke: var(--border); stroke-width: var(--d-stroke); }
.diagram .d-model  { stroke: var(--d-model);  fill: var(--d-model-bg); }
.diagram .d-action { stroke: var(--d-action); fill: var(--d-action-bg); }
.diagram .d-data   { stroke: var(--d-data);   fill: var(--d-data-bg); }
.diagram .d-io     { stroke: var(--d-io);     fill: var(--d-io-bg); }
.diagram .d-safety { stroke: var(--d-safety); fill: var(--d-safety-bg); }
.diagram .d-ok     { stroke: var(--d-ok);     fill: var(--d-ok-bg); }

/* role-tinted icon/accent marks (use fill) */
.diagram .i-model  { fill: var(--d-model); }
.diagram .i-action { fill: var(--d-action); }
.diagram .i-data   { fill: var(--d-data); }
.diagram .i-io     { fill: var(--d-io); }

/* sealed container (the "room") */
.diagram .d-room {
  fill: var(--code-bg);
  stroke: var(--d-io);
  stroke-width: 1.6px;
  stroke-dasharray: 7 6;
  opacity: 0.95;
}
.diagram .d-door { fill: var(--bg); stroke: var(--d-io); stroke-width: 1.6px; }

/* ---------- Edges & arrows ---------- */
.diagram .d-edge { fill: none; stroke: var(--ec, var(--d-io)); stroke-width: var(--d-stroke); stroke-linecap: round; }
.diagram .d-arrow { fill: var(--ec, var(--d-io)); }
.diagram .d-flow--request  { --ec: var(--d-action); }
.diagram .d-flow--response { --ec: var(--d-ok); }
.diagram .d-flow--tool     { --ec: var(--d-action); }
.diagram .d-flow--data     { --ec: var(--d-data); }
.diagram .d-flow--loop     { --ec: var(--d-model); }
.diagram .d-flow--io       { --ec: var(--d-io); }
.diagram .d-flow--blocked  { --ec: var(--d-safety); }
.diagram .d-edge--dashed { stroke-dasharray: 6 5; }
.diagram .d-edge--dotted { stroke-dasharray: 1.5 6; }

/* ---------- Tokens / chips ---------- */
.diagram .d-token rect {
  fill: var(--d-model-bg);
  stroke: var(--d-model);
  stroke-width: 1.3px;
}
.diagram .d-token text {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  font-weight: 600;
  fill: var(--text);
}

/* ---------- App / terminal window chrome ---------- */
.diagram .d-win { fill: var(--bg); stroke: var(--border); stroke-width: 1.4px; }
.diagram .d-win-bar { fill: var(--bg-sidebar); stroke: var(--border); stroke-width: 1.4px; }
.diagram .d-win-dot { fill: var(--border); }
.diagram .d-win-title { font-size: 11px; fill: var(--text-muted); }
.diagram .d-term {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  fill: var(--text);
}
.diagram .d-term-prompt { fill: var(--d-ok); font-weight: 600; }
.diagram .d-term-dim { fill: var(--text-muted); }
.diagram .d-cursor { fill: var(--d-action); }

/* ---------- Numbered step badge ---------- */
.diagram .d-badge { fill: var(--d-action); }
.diagram .d-badge--model { fill: var(--d-model); }
.diagram .d-badge--data { fill: var(--d-data); }
.diagram .d-badge--io { fill: var(--d-io); }
.diagram .d-badge-num { fill: #fff; font-size: 13px; font-weight: 700; }

/* ---------- Generic pill / tag ---------- */
.diagram .d-chip { fill: var(--code-bg); stroke: var(--border); stroke-width: 1.2px; }
.diagram .d-chip-tx { font-size: 11.5px; fill: var(--text); }

/* ---------- Folder / file glyph fills ---------- */
.diagram .g-folder { fill: var(--d-data-bg); stroke: var(--d-data); stroke-width: 1.5px; }
.diagram .g-file { fill: var(--bg); stroke: var(--d-data); stroke-width: 1.4px; }
.diagram .g-line { stroke: var(--d-data); stroke-width: 1.3px; opacity: 0.6; }

/* =========================================================
   MOTION — paused until .in-view; off under reduced-motion.
   ========================================================= */
.diagram .anim { animation-play-state: paused; }
.diagram.in-view .anim { animation-play-state: running; }

/* breathing "working" ring on a node */
.diagram .d-pulse {
  fill: none;
  stroke: var(--d-model);
  stroke-width: 2px;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  animation: dPulse 2.4s var(--ease, ease-in-out) infinite;
}
@keyframes dPulse {
  0%, 100% { opacity: 0; transform: scale(0.96); }
  50%      { opacity: 0.55; transform: scale(1.04); }
}

/* flowing dashes along an edge (data in motion) */
.diagram .d-flowing { stroke-dasharray: 5 7; animation: dDash 0.9s linear infinite; }
@keyframes dDash { to { stroke-dashoffset: -24; } }

/* a bead riding an edge/loop path (set offset-path inline per diagram) */
.diagram .d-bead {
  fill: var(--d-model);
  animation: dRide 5.5s linear infinite;
}
@keyframes dRide {
  from { offset-distance: 0%; }
  to   { offset-distance: 100%; }
}

/* gentle nudge toward a door — "can't get in" */
.diagram .d-knock { animation: dKnock 2.6s ease-in-out infinite; }
@keyframes dKnock {
  0%, 100% { transform: translateX(0); }
  45%      { transform: translateX(7px); }
  60%      { transform: translateX(2px); }
}

/* sealed-room shimmer */
.diagram .d-seal { animation: dSeal 3.4s linear infinite; }
@keyframes dSeal { to { stroke-dashoffset: -26; } }

/* blinking terminal cursor */
.diagram .d-blink { animation: dBlink 1.1s steps(1) infinite; }
@keyframes dBlink { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }

/* a paper sliding off the edge of a full desk */
.diagram .d-drop { animation: dDrop 3.6s ease-in infinite; }
@keyframes dDrop {
  0%, 55%  { transform: translateX(0); opacity: 0.9; }
  100%     { transform: translateX(40px); opacity: 0; }
}

/* checkmark / item pop-in (use with seq-item for staggered ticks) */
.diagram .d-pop {
  transform-box: fill-box;
  transform-origin: center;
  animation: dPop 0.5s var(--ease, ease-out) both;
}
@keyframes dPop {
  0%   { opacity: 0; transform: scale(0.4); }
  70%  { opacity: 1; transform: scale(1.12); }
  100% { opacity: 1; transform: scale(1); }
}

/* path draw-on (set pathLength="100" on the path) */
.diagram .d-draw {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: dDraw 1.4s var(--ease, ease-in-out) infinite alternate;
}
@keyframes dDraw { to { stroke-dashoffset: 0; } }

/* token-sequence reveal (driven by diagrams.js) */
.diagram .seq-item { transition: opacity 0.28s ease, transform 0.28s ease; }
.diagram.seq-playing .seq-item { opacity: 0; transform: translateY(4px); }
.diagram.seq-playing .seq-item.shown { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .diagram .anim,
  .diagram .d-pulse,
  .diagram .d-flowing,
  .diagram .d-bead,
  .diagram .d-knock,
  .diagram .d-seal,
  .diagram .d-blink,
  .diagram .d-pop,
  .diagram .d-drop,
  .diagram .d-draw { animation: none !important; }
  .diagram .d-drop { opacity: 0.5; }
  .diagram .d-pulse { opacity: 0.4; }
  .diagram .d-draw { stroke-dashoffset: 0; }
  .diagram .d-pop { opacity: 1; transform: none; }
  .diagram.seq-playing .seq-item { opacity: 1; transform: none; }
}

/* ---------- Mobile ---------- */
@media (max-width: 560px) {
  .markdown .diagram { padding: 10px 8px 4px; }
  .diagram figcaption { font-size: 12px; }
}