:root {
  --bg:             #f5f5f0;
  --surface:        #ffffff;
  --surface-raised: #fafaf8;
  --text:           #1a1a1a;
  --text-muted:     #636363;
  --border:         #d8d5ce;
  --border-subtle:  #e8e5de;

  --code-bg:        #111110;
  --code-text:      #d4d4c8;
  --code-hl:        #e0b060;
  --code-grn:       #7ec890;
  --code-blue:      #7eb8e0;
  --code-dim:       #5a5a4e;

  /* Actor colours */
  --grant-color:    #b5451b;
  --grant-bg:       #fdf3ef;
  --grant-border:   #e8c4b8;

  --github-color:   #4a5470;
  --github-bg:      #f4f5f8;
  --github-border:  #c8ccd8;

  --tavily-color:   #1a7a4a;
  --tavily-bg:      #f0faf4;
  --tavily-border:  #b8e0c8;

  --web-color:      #6b21a8;
  --web-bg:         #faf4ff;
  --web-border:     #d8b8e8;

  --outcome-accepted-color: var(--tavily-color);
  --outcome-accepted-bg:    var(--tavily-bg);
  --outcome-accepted-border: var(--tavily-border);
  --outcome-rejected-color: #b5451b;
  --outcome-rejected-bg:    #fdf3ef;
  --outcome-duplicate-color: #c87a1a;
  --outcome-duplicate-bg:   #fdf8ef;

  --radius:    4px;
  --radius-lg: 8px;
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.04);
  --dur-fast: 80ms;
  --dur-normal: 150ms;
  --dur-slow: 300ms;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  font-size: 15px;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 52px;
}
.back-link {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: color var(--dur-fast);
}
.back-link:hover { color: var(--text); }
.back-link svg { width: 14px; height: 14px; }
.header-title { font-size: 0.8rem; font-weight: 600; color: var(--text); }

.main {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 2rem 6rem;
}

.identity {
  margin-bottom: 3rem;
}
.identity-name {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 0.25rem;
}
.identity-role {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.identity-role a {
  color: var(--grant-color);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.identity-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.65;
}

.section { margin-bottom: 3rem; }
.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.875rem;
}
.section-label-tag {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  opacity: 0.6;
}

.run-details {
  /* no box — blends into section */
}
.run-details > summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  cursor: pointer;
  user-select: none;
  margin-bottom: 0;
}
.run-details > summary::-webkit-details-marker { display: none; }
.run-details > summary .section-label { margin-bottom: 0; }
.run-details > summary::before {
  content: '▶';
  font-size: 0.5rem;
  color: var(--text-muted);
  transition: transform var(--dur-fast);
  flex-shrink: 0;
}
.run-details[open] > summary::before { transform: rotate(90deg); }
.run-details[open] > summary { margin-bottom: 0.875rem; }

.run-summary-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  min-width: 0;
}
.run-summary-issue {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}
.step-chip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.875rem 1rem;
  box-shadow: var(--shadow-sm);
}
.step-num {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}
.step-title {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}
.step-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.run-meta {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}
.run-meta-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 1rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border-subtle);
  gap: 1rem;
  flex-wrap: wrap;
}
.run-meta-issue {
  font-size: 0.875rem;
  font-weight: 600;
}
.run-meta-issue a { color: var(--github-color); text-decoration: underline; text-underline-offset: 2px; }
.run-meta-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--mono);
}
.run-meta-body {
  padding: 0.875rem 1rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}
.run-outcome {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 3px 8px;
  border-radius: 3px;
}
.run-outcome.accepted { background: var(--outcome-accepted-bg); color: var(--outcome-accepted-color); border: 1px solid var(--outcome-accepted-border); }
.run-outcome.rejected { background: var(--outcome-rejected-bg); color: var(--outcome-rejected-color); border: 1px solid var(--grant-border); }
.run-outcome.duplicate { background: var(--outcome-duplicate-bg); color: var(--outcome-duplicate-color); border: 1px solid #e8d8b8; }
.benefit-pill {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.benefit-pill strong { color: var(--text); }
.run-link {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--github-color);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.trace { display: flex; flex-direction: column; }

.trace-step {
  display: flex;
  gap: 0;
  animation: step-in 0.3s var(--ease) forwards;
}
@keyframes step-in {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}

.trace-gutter {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 28px;
  flex-shrink: 0;
}
.trace-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
  margin-top: 18px;
  z-index: 1;
}
.trace-line {
  width: 2px;
  flex: 1;
  min-height: 12px;
  background: var(--border-subtle);
}
.trace-step:last-child .trace-line { display: none; }

.actor-grant  .trace-dot { border-color: var(--grant-color); }
.actor-github .trace-dot { border-color: var(--github-color); background: var(--github-color); }
.actor-tavily .trace-dot { border-color: var(--tavily-color); }
.actor-web    .trace-dot { border-color: var(--web-color); }

.trace-card {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  margin: 8px 0 0;
}
.trace-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.875rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border-subtle);
}
.actor-badge {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 1px 5px;
  border-radius: 2px;
}
.badge-grant  { background: var(--grant-bg);  color: var(--grant-color);  border: 1px solid var(--grant-border); }
.badge-github { background: var(--github-bg); color: var(--github-color); border: 1px solid var(--github-border); }
.badge-tavily { background: var(--tavily-bg); color: var(--tavily-color); border: 1px solid var(--tavily-border); }
.badge-web    { background: var(--web-bg);    color: var(--web-color);    border: 1px solid var(--web-border); }

.trace-head-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text);
}
.trace-head-detail {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: var(--mono);
  margin-left: auto;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.trace-body {
  padding: 0.75rem 0.875rem;
}
.trace-primary {
  font-size: 0.875rem;
  line-height: 1.55;
  margin-bottom: 0.375rem;
}
.trace-annotation {
  font-size: 0.775rem;
  color: var(--text-muted);
  line-height: 1.5;
  font-style: italic;
}
.trace-annotation strong { color: var(--text); font-style: normal; }

.state-loading, .state-error {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.site-footer {
  margin-top: 6rem;
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.site-footer a { color: var(--grant-color); text-underline-offset: 2px; }

.sim-task {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1rem;
}
.sim-task-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border-subtle);
}
.sim-task-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}
.sim-task-num {
  font-size: 0.7rem;
  font-family: var(--mono);
  color: var(--github-color);
  margin-left: auto;
}
.sim-task-body {
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.sim-task-body strong { color: var(--text); font-style: normal; }

.sim-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.25rem;
}
.sim-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0 1.125rem;
  height: 40px;
  background: var(--grant-color);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--dur-fast);
}
.sim-btn:hover { opacity: 0.88; }
.sim-btn:focus-visible { outline: 2px solid var(--grant-color); outline-offset: 2px; }
.prop-chip:focus-visible,
.arch-node:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}
.sim-btn:active { transform: scale(0.97); }
.sim-btn:disabled { opacity: 0.5; cursor: default; }
.sim-btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.sim-hint { font-size: 0.8rem; color: var(--text-muted); }

.sim-hidden { display: none !important; }
.sim-visible { animation: step-in 0.3s var(--ease) forwards; }

.prop-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.875rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color var(--dur-fast), color var(--dur-fast), background-color var(--dur-fast);
}
.prop-chip:hover { border-color: var(--grant-border); color: var(--grant-color); }
.prop-chip[aria-expanded="true"] {
  border-color: var(--grant-color);
  color: var(--grant-color);
  background: var(--grant-bg);
  box-shadow: 0 0 0 1px var(--grant-color);
}
.prop-chip-icon { width: 13px; height: 13px; stroke-width: 2; flex-shrink: 0; }
.prop-detail-slot { min-height: 80px; margin-bottom: 1.25rem; }

/* Radial diagram */
.prop-radial {
  position: relative;
  width: 100%;
  max-width: 500px;
  margin: 0 auto 0.75rem;
  aspect-ratio: 500 / 320;
}
.prop-radial-center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
  z-index: 1;
}
.prop-radial-center-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--grant-color);
}
.prop-radial-center-sub {
  font-size: 0.65rem;
  color: var(--grant-color);
  opacity: 0.6;
  margin-top: 0.1rem;
}
.prop-radial-node {
  position: absolute;
  transform: translate(-50%, -50%);
  z-index: 1;
}

@media (max-width: 580px) {
  .prop-radial {
    position: static;
    aspect-ratio: unset;
    max-width: unset;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  .prop-radial-center { display: none; }
  .prop-radial-node {
    position: static;
    transform: none;
  }
}

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 0.875rem;
}
.outcome-card {
  border-radius: var(--radius-lg);
  border: 1px solid;
  padding: 0.875rem 1rem;
}
.outcome-card.accepted  { background: var(--outcome-accepted-bg);  border-color: var(--outcome-accepted-border); }
.outcome-card.rejected  { background: var(--outcome-rejected-bg);  border-color: var(--grant-border); }
.outcome-card.duplicate { background: var(--outcome-duplicate-bg); border-color: #e8d8b8; }
.outcome-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.375rem;
}
.outcome-card.accepted  .outcome-label { color: var(--outcome-accepted-color); }
.outcome-card.rejected  .outcome-label { color: var(--outcome-rejected-color); }
.outcome-card.duplicate .outcome-label { color: var(--outcome-duplicate-color); }
.outcome-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.45; }

@media (max-width: 540px) {
  .outcomes-grid { grid-template-columns: 1fr; }
}

.sim-code {
  background: var(--code-bg);
  border-radius: var(--radius);
  padding: 0.625rem 0.875rem;
  margin-top: 0.5rem;
  overflow-x: auto;
}
.sim-code pre {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--code-text);
  white-space: pre;
  line-height: 1.6;
}
.sim-code .c-dim  { color: var(--code-dim); }
.sim-code .c-hl   { color: var(--code-hl); }
.sim-code .c-grn  { color: var(--code-grn); }
.sim-code .c-blue { color: var(--code-blue); }

.arch-diagram {
  margin-top: 0.75rem;
  overflow-x: visible;
  padding-bottom: 0.5rem;
  margin-right: -56px;
}
.arch-nodes {
  display: flex;
  align-items: center;
  width: max-content;
}
.arch-node-wrap--stacked {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.arch-node {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-lg);
  border: 1px solid;
  background: var(--surface);
  cursor: pointer;
  text-align: left;
  font-family: var(--font);
  transition: box-shadow var(--dur-fast), transform var(--dur-fast);
  min-width: 96px;
}
.arch-node:hover { box-shadow: var(--shadow-sm); }
.arch-node-label { font-size: 0.8rem; font-weight: 700; }
.arch-node-sublabel { font-size: 0.68rem; margin-top: 0.125rem; opacity: 0.75; }

.arch-node--github { border-color: var(--github-border); color: var(--github-color); }
.arch-node--github[aria-expanded="true"] { box-shadow: 0 0 0 2px var(--github-color); }

.arch-node--grant  { border-color: var(--grant-border);  color: var(--grant-color);  background: var(--grant-bg); }
.arch-node--grant[aria-expanded="true"]  { box-shadow: 0 0 0 2px var(--grant-color); }

.arch-node--tavily { border-color: var(--tavily-border); color: var(--tavily-color); }
.arch-node--tavily[aria-expanded="true"] { box-shadow: 0 0 0 2px var(--tavily-color); }

.arch-node--web    { border-color: var(--web-border);    color: var(--web-color); }
.arch-node--web[aria-expanded="true"]    { box-shadow: 0 0 0 2px var(--web-color); }

.arch-node--human  { border-color: var(--border); color: var(--text-muted); }
.arch-node--human[aria-expanded="true"]  { box-shadow: 0 0 0 2px var(--text); color: var(--text); }

.arch-connector {
  flex-shrink: 0;
  width: 32px;
  position: relative;
  height: 2px;
  background: var(--border-subtle);
  align-self: center;
  overflow: visible;
  cursor: help;
}
.arch-connector-label {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.2rem 0.5rem;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast);
}
.arch-connector:hover .arch-connector-label { opacity: 1; }
.packet {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
}
.packet-req    { background: var(--grant-color);  animation: pkt-fwd 2.4s ease-in-out infinite; }
.packet-res    { background: var(--github-color); animation: pkt-rev 2.4s ease-in-out infinite; animation-delay: 1.2s; }
.packet-query  { background: var(--tavily-color); animation: pkt-fwd 2.4s ease-in-out infinite; animation-delay: 0.4s; }
.packet-result { background: var(--tavily-color); animation: pkt-rev 2.4s ease-in-out infinite; animation-delay: 1.6s; }
@keyframes pkt-fwd {
  0%   { left: 0%;    opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { left: 100%;  opacity: 0; }
}
@keyframes pkt-rev {
  0%   { left: 100%;  opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { left: 0%;    opacity: 0; }
}

/* Orbiting dots around Grant center in the radial diagram */
.orbit-dot {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 5px;
  height: 5px;
  margin: -2.5px;
  border-radius: 50%;
  background: var(--grant-color);
  opacity: 0.25;
  animation: orbit 10s linear infinite;
}
@keyframes orbit {
  from { transform: rotate(0deg)    translateX(52px) rotate(0deg); }
  to   { transform: rotate(360deg)  translateX(52px) rotate(-360deg); }
}

.node-panels-slot {
  min-height: 88px;
  margin-top: 1rem;
}
.node-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.125rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
}
.node-panel-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.375rem;
}

.added-banner {
  margin-top: 1.25rem;
  padding: 0.875rem 1rem;
  background: var(--outcome-accepted-bg);
  border: 1px solid var(--outcome-accepted-border);
  border-radius: var(--radius-lg);
}
.added-banner-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--outcome-accepted-color);
  margin-bottom: 0.375rem;
}
.added-banner-name {
  font-size: 0.875rem;
  font-weight: 600;
}
.added-banner-name span { font-weight: 400; color: var(--text-muted); }
.added-banner-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

@media (max-width: 540px) {
  .main { padding: 2rem 1.25rem 4rem; }
  .header-inner { padding: 0 1.25rem; }
  .identity-name { font-size: 1.75rem; }
  .trace-head-detail { display: none; }
}