/* Live layer for the project examples.

   Counts come from JavaScript on a fixed timestep; every travelling mark
   here is a CSS animation whose duration is set from the simulated rate.
   Nothing in this file repositions a node per frame. */

.sim{margin-top:18px;border:1px solid var(--line);border-radius:6px;background:#1e211c;padding:14px 15px 15px}
.sim[data-sim-state="held"]{border-color:#414a37}

/* Head: transport controls, readout, and the guard that can be switched off */
.sim-head{display:flex;flex-wrap:wrap;align-items:center;gap:9px 14px;margin-bottom:14px}
.sim-transport{display:flex;gap:6px}
.sim-button{display:inline-flex;align-items:center;gap:7px;min-height:32px;padding:6px 12px;border:1px solid #414a37;border-radius:4px;background:#262b22;color:#d5e1c3;font-size:10px;font-family:var(--mono);letter-spacing:.4px;transition:background .18s,color .18s,border-color .18s}
.sim-button:hover{background:#2f3829;border-color:#55603f}
.sim-button.secondary{color:var(--muted);background:transparent}
.sim-button.secondary:hover{color:var(--text)}
.sim-glyph{width:0;height:0;border-style:solid;border-width:4.5px 0 4.5px 7px;border-color:transparent transparent transparent currentColor}
.sim-button[aria-pressed="true"] .sim-glyph{width:7px;height:9px;border:0;background:currentColor;clip-path:polygon(0 0,38% 0,38% 100%,0 100%,0 0,62% 0,100% 0,100% 100%,62% 100%,62% 0)}
.sim-readout{display:flex;gap:12px;font-family:var(--mono);font-size:9px;letter-spacing:.6px;color:var(--quiet);margin-left:auto}
.sim-readout b{font-weight:400;color:#c6d0b7}

.sim-guard{display:inline-flex;align-items:center;gap:8px;font-size:10px;color:var(--muted);cursor:pointer;min-height:32px}
.sim-guard input{accent-color:#8fa878;width:13px;height:13px;margin:0}
.sim-guard[data-sim-guard-off="true"]{color:#d9a88a}
.sim-guard-name{font-family:var(--mono);font-size:9px;letter-spacing:.5px}

/* The track: stages, the marks queued in each, and the flow between them */
.sim-track{display:flex;align-items:stretch;gap:0;overflow-x:auto;padding-bottom:4px}
.sim-stage{flex:1 1 0;min-width:104px;display:flex;flex-direction:column;gap:7px;padding:10px;border:1px solid #333a2c;border-radius:5px;background:#22271f;transition:border-color .25s,background .25s}
.sim-stage[data-sim-constrained="true"]{border-color:#a2704f;background:#2a2620}
.sim-stage[data-sim-terminal="true"]{border-style:dashed}
.sim-stage-name{font-family:var(--mono);font-size:7.5px;letter-spacing:.9px;text-transform:uppercase;color:var(--quiet);line-height:1.5}
.sim-stage[data-sim-constrained="true"] .sim-stage-name{color:#d9a88a}
.sim-stage-count{font-family:var(--display);font-size:17px;line-height:1.1;color:var(--text);font-variant-numeric:tabular-nums}
.sim-stage-sub{font-family:var(--mono);font-size:7px;letter-spacing:.4px;color:var(--quiet);line-height:1.6}

.sim-marks{display:flex;flex-wrap:wrap;gap:2.5px;align-content:flex-start;min-height:22px}
.sim-mark{display:block;width:5px;height:5px;border-radius:1px;background:#8fa878;animation:sim-mark-in .28s ease-out both}
.sim-stage[data-sim-constrained="true"] .sim-mark{background:#c08a63}
.sim-stage[data-sim-terminal="true"] .sim-mark{background:#a98a70}
.sim-marks[data-overflow]:not([data-overflow=""])::after{content:attr(data-overflow);font-family:var(--mono);font-size:7px;letter-spacing:.3px;color:var(--quiet);align-self:center;margin-left:3px}
@keyframes sim-mark-in{from{opacity:0;transform:scale(.4)}to{opacity:1;transform:scale(1)}}

/* Connectors carry travelling dots; duration is set from the simulated rate */
.sim-link{flex:0 0 34px;position:relative;align-self:center;height:16px}
.sim-link::before{content:"";position:absolute;top:50%;left:0;right:0;height:1px;background:#333a2c}
.sim-link>i{position:absolute;top:50%;left:0;width:4px;height:4px;margin-top:-2px;border-radius:50%;background:#8fa878;opacity:0}
.sim-link.sim-flowing>i{animation:sim-travel var(--sim-flow-duration,1.4s) linear infinite}
.sim-link>i:nth-child(2){animation-delay:calc(var(--sim-flow-duration,1.4s) * -.33)}
.sim-link>i:nth-child(3){animation-delay:calc(var(--sim-flow-duration,1.4s) * -.66)}
@keyframes sim-travel{0%{left:2px;opacity:0}15%{opacity:1}85%{opacity:1}100%{left:calc(100% - 6px);opacity:0}}

/* The refused branch only exists while a guard is switched off */
.sim-refused{display:flex;align-items:center;gap:7px;margin-top:10px;padding:8px 10px;border:1px solid #7d4f3c;border-radius:4px;background:#2a2018;font-family:var(--mono);font-size:8px;letter-spacing:.5px;color:#e0a684}
.sim-refused>b{font-weight:400;color:#f0c4a8;font-variant-numeric:tabular-nums}
.sim-refused .sim-mark{background:#c9704a;animation:sim-refuse .5s ease-out both}
@keyframes sim-refuse{from{opacity:0;transform:translateY(-3px)}to{opacity:1;transform:none}}

.sim-note{font-size:10.5px;line-height:1.85;color:var(--muted);margin-top:12px}
.sim-note b{font-weight:500;color:#d5d8cd}
.sim-note[data-sim-warning="true"]{color:#e0b193}

/* Timeline: a sequence axis with events landing at their own position */
.sim-timeline{position:relative;margin-top:4px;padding:22px 0 10px;overflow-x:auto}
.sim-axis{position:relative;height:1px;background:#333a2c;min-width:280px}
.sim-cursor{position:absolute;top:-13px;bottom:-9px;width:1px;background:var(--accent);transition:left .45s cubic-bezier(.4,0,.2,1)}
.sim-cursor::after{content:attr(data-label);position:absolute;top:-12px;left:4px;font-family:var(--mono);font-size:7px;letter-spacing:.5px;color:var(--accent);white-space:nowrap}
.sim-event{position:absolute;top:-9px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:3px;font-family:var(--mono);font-size:7px;letter-spacing:.4px;color:#c6d0b7;transition:left .45s cubic-bezier(.4,0,.2,1)}
.sim-event::before{content:"";width:7px;height:7px;border-radius:50%;background:#8fa878}
.sim-event[data-sim-verdict="stale"]{color:#9a8f84}
.sim-event[data-sim-verdict="stale"]::before{background:transparent;border:1px solid #7a6a5c}
.sim-event[data-sim-verdict="stale"] span{text-decoration:line-through}
.sim-event[data-sim-verdict="applied"]::before{background:var(--accent);box-shadow:0 0 0 3px #dfad8c22}
.sim-event[data-sim-verdict="wrong"]{color:#e0a684}
.sim-event[data-sim-verdict="wrong"]::before{background:#c9704a;box-shadow:0 0 0 3px #c9704a22}

/* Backlog meter, shared by anything with a queue that drains or does not */
.sim-meter{margin-top:12px}
.sim-meter-bar{position:relative;height:6px;border-radius:3px;background:#262b22;overflow:hidden}
.sim-meter-fill{position:absolute;inset:0 auto 0 0;background:#8fa878;border-radius:3px;transition:width .3s linear}
.sim-meter[data-sim-warning="true"] .sim-meter-fill{background:#c9704a}
.sim-meter-label{display:flex;justify-content:space-between;gap:10px;font-family:var(--mono);font-size:7.5px;letter-spacing:.5px;color:var(--quiet);margin-bottom:5px}

/* Staged examples: a request moving through named steps */
.sim-steps{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.sim-step{display:flex;align-items:center;gap:6px;padding:5px 9px;border:1px solid #333a2c;border-radius:3px;font-family:var(--mono);font-size:7.5px;letter-spacing:.6px;text-transform:uppercase;color:var(--quiet);transition:border-color .2s,color .2s,background .2s}
.sim-step[data-sim-step-state="active"]{border-color:var(--accent);color:var(--accent);background:#2a2620}
.sim-step[data-sim-step-state="done"]{border-color:#4a5540;color:#b9c5a8}
.sim-step[data-sim-step-state="done"]::before{content:"✓";font-size:8px}
.sim-step[data-sim-step-state="active"]::before{content:"";width:5px;height:5px;border-radius:50%;background:currentColor;animation:sim-pulse 1s ease-in-out infinite}
@keyframes sim-pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* Candidate cards: retrieval evidence competing for a context budget */
.sim-candidates{display:grid;gap:7px;margin-top:4px}
.sim-candidate{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;align-items:center;padding:9px 11px;border:1px solid #333a2c;border-radius:4px;background:#22271f;opacity:.45;transition:opacity .3s,border-color .3s,background .3s,transform .3s}
.sim-candidate[data-sim-card="considered"]{opacity:1}
.sim-candidate[data-sim-card="selected"]{opacity:1;border-color:#5c6b48;background:#252b20}
.sim-candidate[data-sim-card="evicted"]{opacity:1;border-color:#7d4f3c;background:#2a2018;transform:translateX(6px)}
.sim-candidate-name{font-size:10.5px;color:#d5d8cd;line-height:1.5}
.sim-candidate-score{font-family:var(--mono);font-size:8px;letter-spacing:.4px;color:var(--quiet);font-variant-numeric:tabular-nums}
.sim-candidate-why{grid-column:1 / -1;font-family:var(--mono);font-size:7.5px;letter-spacing:.3px;line-height:1.7;color:var(--quiet)}
.sim-candidate[data-sim-card="selected"] .sim-candidate-score{color:#b9c5a8}
.sim-candidate[data-sim-card="evicted"] .sim-candidate-why{color:#e0a684}

.sim-budget{margin-top:11px}
.sim-budget-slots{display:flex;gap:4px;margin-top:5px}
.sim-budget-slot{flex:1 1 0;height:8px;border-radius:2px;border:1px solid #3d4535;background:#22271f;transition:background .3s,border-color .3s}
.sim-budget-slot[data-sim-slot="filled"]{background:#8fa878;border-color:#8fa878}
.sim-budget-slot[data-sim-slot="wasted"]{background:#c9704a;border-color:#c9704a}

/* Batch tiles: one configuration sweeping across many items */
.sim-tiles{display:flex;flex-wrap:wrap;gap:3px;margin-top:4px}
.sim-tile{width:11px;height:11px;border-radius:2px;border:1px solid #3d4535;background:#22271f;transition:background .25s,border-color .25s}
.sim-tile[data-sim-tile="mapped"]{background:#8fa878;border-color:#8fa878}
.sim-tile[data-sim-tile="held"]{background:#c9704a;border-color:#c9704a;animation:sim-pulse 1.4s ease-in-out infinite}
.sim-tile[data-sim-tile="assumed"]{background:#c9a04a;border-color:#c9a04a}

/* Boundary: a request meeting the gate that decides about it */
.sim-gate{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;margin-top:4px}
.sim-gate-end{font-family:var(--mono);font-size:7.5px;letter-spacing:.7px;text-transform:uppercase;color:var(--quiet);text-align:center;line-height:1.6}
.sim-gate-lane{position:relative;height:30px;border-top:1px solid #333a2c;border-bottom:1px solid #333a2c}
.sim-gate-wall{position:absolute;top:-1px;bottom:-1px;right:0;width:2px;background:#5c6b48;transition:background .25s}
.sim-gate[data-sim-verdict="deny"] .sim-gate-wall{background:#c9704a}
.sim-gate[data-sim-verdict="open"] .sim-gate-wall{background:transparent;border-left:2px dashed #7d4f3c}
.sim-gate-packet{position:absolute;top:50%;left:4px;width:9px;height:9px;margin-top:-4.5px;border-radius:2px;background:#8fa878;transition:left .5s cubic-bezier(.4,0,.2,1),background .25s,opacity .3s}
.sim-gate[data-sim-verdict="deny"] .sim-gate-packet{background:#c9704a}
.sim-gate-stamp{font-family:var(--mono);font-size:8px;letter-spacing:1px;text-align:center;margin-top:9px;color:var(--quiet);min-height:14px}
.sim-gate[data-sim-verdict="allow"] .sim-gate-stamp{color:#b9c5a8}
.sim-gate[data-sim-verdict="deny"] .sim-gate-stamp{color:#e0a684}
.sim-gate[data-sim-verdict="open"] .sim-gate-stamp{color:#e0c184}

/* Station grid: a lot working through its modules */
.sim-lot{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}
.sim-unit{width:100%;max-width:26px;flex:1 1 20px;aspect-ratio:1;border-radius:3px;border:1px solid #3d4535;background:#22271f;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:7px;color:var(--quiet);transition:background .25s,border-color .25s}
.sim-unit[data-sim-unit="testing"]{border-color:var(--accent);animation:sim-pulse .8s ease-in-out infinite}
.sim-unit[data-sim-unit="pass"]{background:#3a462f;border-color:#5c6b48;color:#cfdcb9}
.sim-unit[data-sim-unit="hold"]{background:#3a2a22;border-color:#7d4f3c;color:#e0a684}
.sim-unit[data-sim-unit="rewritten"]{background:#3a3322;border-color:#7d6a3c;color:#e0c184}

@media(max-width:600px){
  .sim{padding:12px 11px 13px;margin-top:15px}
  .sim-head{gap:8px 10px;margin-bottom:11px}
  .sim-readout{margin-left:0;flex-basis:100%;order:3}
  .sim-stage{min-width:88px;padding:8px;gap:5px}
  .sim-stage-count{font-size:15px}
  .sim-link{flex-basis:22px}
  .sim-note{font-size:10px}
  .sim-candidate{padding:8px 9px}
  .sim-candidate-name{font-size:10px}
  .sim-gate{gap:8px}
  .sim-unit{max-width:22px}
}

/* An unstarted clock still shows a readable resting state, so the example
   is never a blank frame for anyone who cannot see the motion. */
@media(prefers-reduced-motion:reduce){
  .sim-link.sim-flowing>i{animation:none;opacity:.8;left:calc(50% - 2px)}
  .sim-mark,.sim-refused .sim-mark{animation:none}
  .sim-step[data-sim-step-state="active"]::before,.sim-tile[data-sim-tile="held"],.sim-unit[data-sim-unit="testing"]{animation:none}
  .sim-cursor,.sim-event,.sim-gate-packet,.sim-meter-fill{transition:none}
}

/* Clipped, not removed: still announced, still printed. */
.system-flow[data-sim-replaced="true"]{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@media print{
  .sim{display:none!important}
  .system-flow[data-sim-replaced="true"]{position:static;width:auto;height:auto;margin:0;overflow:visible;clip:auto;white-space:normal}
}