/* Diagrams explain relationships; only the connecting signals move. */
.motion-diagram {
  --diagram-surface: #eae8e0;
  --diagram-signal: #bd442f;
  --diagram-ink: var(--ink);
  --diagram-muted: #5b625f;
  --diagram-line: #b3bab4;
  margin: 42px 0 0;
  background: var(--diagram-surface);
  color: var(--diagram-ink);
  border-radius: 4px;
}
.diagram-section { padding-bottom: 66px; }
.diagram-section .motion-diagram { margin-top: 0; }
.diagram-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; padding: 32px 36px 0; }
.diagram-title { font-size: 25px; line-height: 1.3; letter-spacing: -.025em; }
.diagram-lead { font-size: 14px; color: var(--diagram-muted); line-height: 1.6; margin-top: 8px; max-width: 660px; }
.diagram-motion { flex-shrink: 0; display: flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 12px; background: transparent; border: 1px solid var(--diagram-line); border-radius: 3px; font-size: 12px; color: var(--diagram-ink); }
.diagram-motion[hidden] { display: none; }
.diagram-motion:hover { border-color: var(--diagram-signal); }
.diagram-motion svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.diagram-motion .play-symbol { display: none; }
.motion-diagram[data-paused="true"] .pause-symbol { display: none; }
.motion-diagram[data-paused="true"] .play-symbol { display: block; }
.diagram-stage { position: relative; height: 440px; max-width: 1040px; margin: 12px auto 0; }
.diagram-wires { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.wires-mobile { display: none; }
.diagram-route, .diagram-packet { fill: none; vector-effect: non-scaling-stroke; stroke-linecap: round; }
.diagram-route { stroke: var(--diagram-line); stroke-width: 1; }
.diagram-packet { stroke: var(--diagram-signal); stroke-width: 3; stroke-dasharray: 18 982; animation: diagram-flow 9s linear infinite; animation-play-state: paused; }
.packet-1 { animation-delay: -4.5s; }
.packet-2 { animation-delay: -2s; }
.packet-3 { animation-delay: -6s; }
.motion-diagram[data-running="true"] .diagram-packet { animation-play-state: running; }
.diagram-node { position: absolute; transform: translate(-50%, -50%); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; width: 210px; min-height: 118px; padding: 17px 12px; border: 1px solid var(--diagram-line); border-radius: 8px; background: var(--diagram-surface); color: var(--diagram-ink); transition: border-color .2s, background-color .2s; text-align: center; }
.diagram-node:hover { border-color: var(--diagram-signal); }
.diagram-node[aria-pressed="true"] { border-color: var(--diagram-signal); background: #f3eee5; box-shadow: inset 0 0 0 1px var(--diagram-signal); }
.diagram-node > svg { width: 30px; height: 30px; color: var(--diagram-ink); }
.diagram-node-title { font-size: 18px; font-weight: 600; line-height: 1.25; }
.diagram-node-sub { font-size: 12px; line-height: 1.4; color: var(--diagram-muted); }
.diagram-footer { display: flex; align-items: center; justify-content: space-between; gap: 36px; margin: 0 36px; padding: 24px 0 28px; border-top: 1px solid var(--diagram-line); min-height: 120px; }
.diagram-detail { max-width: 740px; }
.diagram-detail h4 { font: 600 16px/1.4 var(--sans); }
.diagram-detail p { font-size: 14px; line-height: 1.6; color: var(--diagram-muted); margin-top: 5px; }
.diagram-hint { flex: 0 0 auto; font-size: 12px; line-height: 1.5; color: var(--diagram-muted); }

/* An asymmetric orbit connects three everyday training questions. */
.diagram-loop { --diagram-signal: #f45c40; --diagram-surface: #202625; --diagram-ink: #f4f1ea; --diagram-muted: #b7bfba; --diagram-line: #53605a; }
.diagram-loop .diagram-node[aria-pressed="true"] { background: #35332c; }
.diagram-loop .node-goals { left: 18%; top: 50%; }
.diagram-loop .node-session { left: 73%; top: 23%; }
.diagram-loop .node-reflect { left: 73%; top: 81%; }
.diagram-centre { position: absolute; left: 46%; top: 51%; width: 140px; height: 140px; display: flex; align-items: center; justify-content: center; flex-direction: column; transform: translate(-50%, -50%); }
.diagram-centre strong { font: 700 42px/1.1 var(--display); letter-spacing: -.03em; }
.diagram-centre > span:last-child { color: var(--diagram-muted); font-size: 12px; margin-top: 8px; }
.centre-ring { position: absolute; inset: 0; border: 1px solid var(--diagram-line); border-radius: 50%; }
.ring-two { inset: -12px; border-style: dashed; opacity: .45; }

/* Numbering is reserved for the actual four-step journey. */
.diagram-journey { border: 1px solid #c7c6bf; --diagram-surface: #f4f1ea; }
.diagram-journey .diagram-stage { height: 365px; }
.diagram-journey .diagram-node { top: 43%; width: 185px; min-height: 132px; border-color: transparent; }
.diagram-journey .diagram-node[aria-pressed="true"] { border-color: var(--diagram-signal); }
.node-understand { left: 12.5%; }
.node-plan { left: 37.5%; }
.node-move { left: 62.5%; }
.node-review { left: 87.5%; }
.diagram-step-number { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--diagram-line); font-size: 16px; font-weight: 500; margin-bottom: 4px; background: var(--paper); }
.diagram-node[aria-pressed="true"] .diagram-step-number { background: var(--diagram-signal); border-color: var(--diagram-signal); color: var(--paper); }
.journey-return { position: absolute; top: 82%; left: 50%; transform: translate(-50%, -50%); padding: 8px 20px; background: var(--diagram-surface); color: var(--diagram-muted); font-size: 12px; white-space: nowrap; }
.diagram-journey .diagram-packet { animation-duration: 7s; }

/* Equal weight for human context and AI assistance, followed by discussion. */
.diagram-roles .node-people { left: 23.5%; top: 38%; width: 240px; }
.diagram-roles .node-ai { left: 76.5%; top: 38%; width: 240px; }
.diagram-roles .node-next { left: 50%; top: 80%; width: 300px; min-height: 110px; }
.diagram-roles .node-next > svg { display: none; }
.role-context, .role-perspective { position: absolute; left: 50%; transform: translateX(-50%); padding: 5px 14px; background: var(--diagram-surface); color: var(--diagram-muted); font-size: 12px; white-space: nowrap; }
.role-context { top: 12%; }
.role-perspective { top: 50%; }
.diagram-roles .diagram-packet { animation-duration: 6s; }
.diagram-roles .packet-1 { animation-delay: -3s; }

@keyframes diagram-flow { to { stroke-dashoffset: -1000; } }
@media (max-width: 1060px) and (min-width: 601px) {
  .diagram-node { width: 180px; }
  .diagram-journey .diagram-node { width: 150px; }
  .diagram-roles .node-people, .diagram-roles .node-ai { width: 200px; }
  .diagram-centre { width: 115px; height: 115px; }
  .diagram-footer { gap: 20px; }
  .diagram-hint { max-width: 130px; }
}
@media (max-width: 760px) {
  .diagram-heading { padding: 24px 22px 0; flex-wrap: wrap; gap: 14px; }
  .diagram-title { font-size: 22px; }
  .diagram-lead { font-size: 13px; }
  .diagram-footer { margin: 0 22px; gap: 18px; flex-direction: column; align-items: flex-start; min-height: 160px; padding: 21px 0; }
  .diagram-hint { max-width: none; }
  .diagram-section { padding-bottom: 44px; }
}
@media (min-width: 601px) and (max-width: 760px) {
  .diagram-journey .diagram-node { width: 125px; padding: 14px 5px; }
  .diagram-journey .diagram-node-title { font-size: 16px; }
}
@media (max-width: 600px) {
  .motion-diagram { margin-top: 30px; }
  .diagram-heading { padding: 23px 18px 0; }
  .diagram-stage { height: 430px; margin-top: 22px; }
  .wires-desktop { display: none; }
  .wires-mobile { display: block; }
  .diagram-node { width: 44%; max-width: 170px; min-height: 110px; padding: 14px 6px; gap: 7px; }
  .diagram-node-title { font-size: 15px; }
  .diagram-node-sub { font-size: 11px; }
  .diagram-node > svg { width: 27px; height: 27px; }
  .diagram-loop .node-goals { top: 13%; left: 50%; }
  .diagram-loop .node-session { top: 78%; left: 25%; }
  .diagram-loop .node-reflect { top: 78%; left: 75%; }
  .diagram-centre { top: 44%; left: 50%; width: 90px; height: 90px; }
  .diagram-centre strong { font-size: 32px; }
  .diagram-centre > span:last-child { font-size: 10px; margin-top: 5px; }
  .ring-two { inset: -9px; }
  .diagram-footer { margin: 0 18px; min-height: 178px; }
  .diagram-detail p { font-size: 13px; }
  .diagram-hint { font-size: 11px; }
  .diagram-journey .diagram-stage { height: 500px; margin-top: 18px; }
  .diagram-journey .diagram-node { width: 76%; max-width: none; min-height: 88px; height: 88px; left: 43%; padding: 10px 14px; display: grid; grid-template-columns: 42px 1fr; grid-template-rows: 1fr 1fr; gap: 1px 14px; text-align: left; justify-content: start; }
  .diagram-journey .diagram-step-number { grid-row: 1 / 3; width: 38px; height: 38px; margin: 0; }
  .diagram-journey .diagram-node-title { align-self: end; }
  .diagram-journey .diagram-node-sub { align-self: start; }
  .diagram-journey .node-understand { top: 11%; }
  .diagram-journey .node-plan { top: 33%; }
  .diagram-journey .node-move { top: 55%; }
  .diagram-journey .node-review { top: 77%; }
  .journey-return { top: 94%; font-size: 11px; padding: 6px 8px; }
  .diagram-roles .diagram-stage { height: 440px; }
  .diagram-roles .node-people { left: 25%; top: 33%; width: 43%; min-height: 130px; }
  .diagram-roles .node-ai { left: 75%; top: 33%; width: 43%; min-height: 130px; }
  .diagram-roles .node-next { left: 50%; top: 82%; width: 82%; min-height: 100px; max-width: 320px; }
  .diagram-roles .diagram-node-sub { max-width: 110px; }
  .diagram-roles .node-next .diagram-node-sub { max-width: none; }
  .role-context { top: 6%; }
  .role-perspective { top: 54%; }
}
@media (prefers-reduced-motion: reduce) {
  .diagram-packet { animation: none !important; stroke-dasharray: none; stroke-width: 1; opacity: .55; }
  .diagram-node { transition: none; }
}
.diagram-node:disabled { cursor: default; }

.motion-diagram button:focus-visible { outline-color: var(--diagram-signal); }