/* Page-scoped proof layouts: loaded only by proof.html. */
.proof-hero {
  display: grid;
  gap: 1.4rem;
  max-inline-size: 63rem;
  padding-block: clamp(4.5rem, 10vw, 8.5rem);
}

.proof-hero > p:not(.eyebrow) {
  max-inline-size: 48rem;
  color: var(--ink-soft);
  font-size: var(--step-1);
}

.demo-notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .45rem 1rem;
  max-inline-size: 53rem;
  margin-block-start: 1rem;
  padding: 1rem 1.15rem;
  color: var(--ink-soft);
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: .84rem;
}

.demo-notice strong {
  color: var(--brand);
  font-size: .72rem;
  letter-spacing: .12em;
}

.proof-layout {
  display: grid;
  grid-template-columns: minmax(16rem, .6fr) minmax(0, 1.4fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  padding-block: var(--section-space);
  border-block-start: 1px solid var(--line);
}

.proof-heading {
  display: grid;
  align-content: start;
  gap: 1rem;
}

.proof-heading > p:last-child { color: var(--ink-soft); }

.proof-index {
  color: var(--brand);
  font-size: .73rem;
  font-weight: 800;
  letter-spacing: .14em;
}

.proof-panel {
  min-inline-size: 0;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.panel-toolbar,
.panel-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-block-end: 1px solid var(--line);
}

.panel-toolbar form { display: flex; flex-wrap: wrap; gap: .45rem; }
.panel-toolbar > p { display: flex; align-items: center; gap: .5rem; color: var(--ink-soft); font-size: .82rem; }
.panel-toolbar > p strong { color: var(--ink); }
.panel-footer { color: var(--ink-soft); border-block-start: 1px solid var(--line); border-block-end: 0; font-size: .78rem; }

.live-dot {
  inline-size: .55rem;
  aspect-ratio: 1;
  background: #35c782;
  border-radius: 50%;
  box-shadow: 0 0 0 .25rem rgb(53 199 130 / 14%);
}

.chip,
.text-button {
  padding: .55rem .8rem;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999rem;
  cursor: pointer;
  font-size: .76rem;
  font-weight: 720;
}

.chip:hover,
.chip.is-active {
  color: var(--button-ink);
  background: var(--brand-deep);
  border-color: var(--brand-deep);
}

.text-button { padding: 0; color: var(--brand); border: 0; }
.text-button:hover { text-decoration: underline; text-underline-offset: .2em; }

.update-list { display: grid; padding: 0 1.2rem; }

.update-list li:not(.skeleton) {
  display: grid;
  grid-template-columns: 7.5rem 1fr auto;
  gap: 1rem;
  align-items: start;
  padding-block: 1.2rem;
  border-block-end: 1px solid var(--line);
}

.update-list li:last-child { border-block-end: 0; }
.update-list time { color: var(--ink-soft); font-size: .78rem; }
.update-copy { display: grid; gap: .35rem; }
.update-copy strong { font-size: .96rem; }
.update-copy span { color: var(--ink-soft); font-size: .84rem; }

.type-label {
  padding: .3rem .55rem;
  color: var(--brand);
  background: var(--surface-soft);
  border-radius: 999rem;
  font-size: .66rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.skeleton {
  block-size: 4.5rem;
  margin-block: .8rem;
  background: linear-gradient(90deg, var(--surface-soft), var(--surface-strong), var(--surface-soft));
  background-size: 220% 100%;
  border-radius: var(--radius-sm);
  animation: proof-shimmer 1.2s linear infinite;
}

.metric-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-block-end: 1px solid var(--line);
}

.metric-summary p { display: grid; gap: .2rem; padding: 1.4rem; }
.metric-summary p + p { border-inline-start: 1px solid var(--line); }
.metric-summary strong { font-size: var(--step-2); line-height: 1; }
.metric-summary span { color: var(--ink-soft); font-size: .75rem; }

.data-label { display: grid !important; gap: .1rem !important; }
.data-label strong { color: var(--brand) !important; font-size: .67rem; letter-spacing: .12em; }
.chart-frame { padding: clamp(1rem, 3vw, 2rem); }
.chart-frame svg { inline-size: 100%; min-block-size: 15rem; overflow: visible; color: var(--brand); }
.chart-frame figcaption { color: var(--ink-soft); font-size: .78rem; text-align: center; }
.chart-grid { stroke: var(--line); stroke-width: 1; }
.chart-axis { fill: var(--ink-soft); font: 12px var(--font-sans); }
.chart-line { fill: none; stroke: var(--brand); stroke-linecap: round; stroke-linejoin: round; stroke-width: 5; }
.chart-area { fill: url(#chart-gradient); opacity: .3; }
.chart-point { fill: var(--surface); stroke: var(--brand); stroke-width: 4; }
.chart-value { fill: var(--ink); font: 700 13px var(--font-sans); text-anchor: middle; }
.outcome-panel details { padding: 1rem 1.2rem; border-block-start: 1px solid var(--line); }
.outcome-panel summary { color: var(--brand); cursor: pointer; font-size: .82rem; font-weight: 750; }
.outcome-panel details p { max-inline-size: 55rem; padding-block-start: .7rem; color: var(--ink-soft); font-size: .8rem; }

.case-panel .panel-toolbar form { display: grid; grid-template-columns: auto minmax(8rem, 1fr) auto minmax(8rem, 1fr); align-items: center; }
.case-panel label { color: var(--ink-soft); font-size: .74rem; font-weight: 700; }
.case-panel select {
  min-block-size: 2.4rem;
  padding-inline: .7rem;
  color: var(--ink);
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.case-results { display: grid; gap: 1rem; padding: 1.2rem; }
.case-card { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: 1.2rem; background: var(--canvas); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.case-card > header { display: grid; gap: .55rem; }
.case-card h3 { font-size: var(--step-1); }
.case-card header p:last-child { color: var(--ink-soft); font-size: .84rem; }
.case-tags { display: flex; flex-wrap: wrap; gap: .35rem; }
.case-card details { grid-column: 1 / -1; padding-block-start: .7rem; border-block-start: 1px solid var(--line); }
.case-card summary { color: var(--brand); cursor: pointer; font-size: .82rem; font-weight: 750; }
.case-reasoning { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; padding-block-start: 1rem; }
.case-reasoning section { padding: 1rem; background: var(--surface); border-radius: var(--radius-sm); }
.case-reasoning h4 { margin: 0 0 .45rem; color: var(--brand); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; }
.case-reasoning p { color: var(--ink-soft); font-size: .8rem; }
.no-results, .no-script { padding: 2rem; color: var(--ink-soft); text-align: center; }

@keyframes proof-shimmer { to { background-position: -220% 0; } }

@media (max-width: 58rem) {
  .proof-layout { grid-template-columns: 1fr; }
  .proof-heading { max-inline-size: 43rem; }
  .case-reasoning { grid-template-columns: 1fr; }
}

@media (max-width: 42rem) {
  .demo-notice,
  .update-list li:not(.skeleton),
  .case-card { grid-template-columns: 1fr; }
  .value-strip { grid-template-columns: 1fr; }
  .metric-summary { grid-template-columns: 1fr; }
  .metric-summary p + p { border-block-start: 1px solid var(--line); border-inline-start: 0; }
  .case-panel .panel-toolbar form { grid-template-columns: 1fr; inline-size: 100%; }
  .case-card details { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .skeleton { animation: none; }
}