/* Dynamic case-study proof matrix. Loaded only on case-studies.html. */
.study-hero {
  display: grid;
  gap: 1.4rem;
  max-inline-size: 66rem;
  padding-block: clamp(4.5rem, 10vw, 8.5rem);
}
.study-hero > p:not(.eyebrow) { max-inline-size: 49rem; color: var(--ink-soft); font-size: var(--step-1); }
.demo-warning { display: grid; grid-template-columns: auto 1fr; gap: .6rem 1rem; max-inline-size: 57rem; margin-block-start: 1rem; padding: 1rem 1.2rem; color: var(--ink-soft); background: var(--surface-soft); border: 1px solid var(--line); border-radius: var(--radius-sm); font-size: .82rem; }
.demo-warning strong { color: var(--brand); font-size: .72rem; letter-spacing: .13em; }

.matrix-blueprint { padding-block: var(--section-space); border-block: 1px solid var(--line); }
.matrix-blueprint ol { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; overflow: hidden; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-md); }
.matrix-blueprint li { display: grid; align-content: start; gap: .55rem; min-block-size: 11rem; padding: 1.35rem; background: var(--surface); }
.matrix-blueprint li:last-child { grid-column: span 2; }
.matrix-blueprint li > span { color: var(--brand); font-size: .7rem; font-weight: 800; letter-spacing: .12em; }
.matrix-blueprint li > strong { font-size: .8rem; letter-spacing: .1em; }
.matrix-blueprint li > p { color: var(--ink-soft); font-size: .85rem; }

.case-library { padding-block: var(--section-space); }
.library-heading { display: flex; justify-content: space-between; gap: 2rem; align-items: end; }
.library-heading > section { display: grid; gap: 1rem; max-inline-size: 48rem; }
.library-heading form { display: grid; grid-template-columns: auto minmax(9rem, 1fr); gap: .55rem .75rem; align-items: center; min-inline-size: min(100%, 22rem); }
.library-heading label { color: var(--ink-soft); font-size: .72rem; font-weight: 750; }
.library-heading select { min-block-size: 2.8rem; padding-inline: .7rem; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.results-status { display: flex; justify-content: space-between; gap: 1rem; margin-block: 2rem 1rem; padding-block: .8rem; color: var(--ink-soft); border-block: 1px solid var(--line); font-size: .78rem; }
.results-status strong { color: var(--ink); }
.study-results { display: grid; gap: 1.2rem; }

.study-card { overflow: hidden; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.study-card > header { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: clamp(1.4rem, 3vw, 2.2rem); color: var(--white); background: linear-gradient(135deg, var(--brand-dark), #075e6b); }
.study-heading { display: grid; gap: .7rem; }
.study-card > header p { color: #cce6e9; }
.study-card h3 { font-size: var(--step-2); }
.verification-badge { align-self: start; padding: .45rem .7rem; color: var(--button-ink); background: var(--brand-deep); border-radius: 999rem; font-size: .65rem; font-weight: 850; letter-spacing: .1em; white-space: nowrap; }
.verification-badge[data-status="demo"] { color: #4d3500; background: #ffd97a; }
.case-meta { display: flex; flex-wrap: wrap; gap: .45rem; }
.case-meta span { padding: .3rem .55rem; color: var(--accent); background: rgb(255 255 255 / 9%); border-radius: 999rem; font-size: .68rem; font-weight: 750; text-transform: capitalize; }

.metric-strip { display: grid; grid-template-columns: repeat(3, 1fr); border-block-end: 1px solid var(--line); }
.metric-strip li { display: grid; gap: .5rem; padding: clamp(1rem, 2.5vw, 1.6rem); }
.metric-strip li + li { border-inline-start: 1px solid var(--line); }
.metric-strip > li > span:first-child { color: var(--ink-soft); font-size: .69rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.metric-values { display: flex; align-items: baseline; gap: .5rem; }
.metric-values s { color: var(--ink-soft); font-size: .9rem; text-decoration-thickness: .08rem; }
.metric-values strong { color: var(--ink); font-size: var(--step-2); line-height: 1; }
.metric-change { color: var(--brand); font-size: .75rem; font-weight: 800; }

.proof-matrix { display: grid; grid-template-columns: repeat(2, 1fr); }
.proof-matrix > section { display: grid; align-content: start; gap: .6rem; min-block-size: 10rem; padding: clamp(1.2rem, 2.5vw, 1.7rem); border-block-end: 1px solid var(--line); }
.proof-matrix > section:nth-child(odd) { border-inline-end: 1px solid var(--line); }
.proof-matrix h4 { margin: 0; color: var(--brand); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }
.proof-matrix p { color: var(--ink-soft); font-size: .88rem; }
.evidence-state { display: inline-flex; align-items: center; gap: .45rem; font-weight: 750; }
.evidence-state::before { inline-size: .55rem; aspect-ratio: 1; content: ""; background: #8aa2a6; border-radius: 50%; }
.evidence-state[data-status="verified"]::before { background: #35c782; }
.evidence-state[data-status="demo"]::before { background: #e6a52f; }

.study-card > footer { display: flex; justify-content: space-between; gap: 1rem; align-items: center; padding: 1.2rem clamp(1.2rem, 2.5vw, 1.7rem); background: var(--surface-soft); }
.study-card > footer p { color: var(--ink-soft); font-size: .78rem; }

.study-skeleton { block-size: 32rem; background: linear-gradient(90deg, var(--surface-soft), var(--surface-strong), var(--surface-soft)); background-size: 220% 100%; border-radius: var(--radius-md); animation: matrix-shimmer 1.2s linear infinite; }
.no-results, .no-script { padding: 2rem; color: var(--ink-soft); text-align: center; }

.skeptic-section { display: grid; grid-template-columns: .75fr 1.25fr; gap: clamp(3rem, 8vw, 8rem); padding-block: var(--section-space); border-block-start: 1px solid var(--line); }
.skeptic-section header { display: grid; align-content: start; gap: 1rem; }
.skeptic-section ul { display: grid; gap: .7rem; counter-reset: skeptic; }
.skeptic-section li { display: grid; grid-template-columns: 2rem 1fr; gap: .8rem; align-items: start; padding: 1rem; color: var(--ink-soft); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); counter-increment: skeptic; }
.skeptic-section li::before { display: grid; place-items: center; inline-size: 2rem; aspect-ratio: 1; color: var(--button-ink); background: var(--brand-deep); border-radius: 50%; content: counter(skeptic); font-size: .72rem; font-weight: 800; }

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

@media (max-width: 58rem) {
  .matrix-blueprint ol { grid-template-columns: repeat(2, 1fr); }
  .matrix-blueprint li:last-child { grid-column: auto; }
  .library-heading, .skeptic-section { display: grid; grid-template-columns: 1fr; align-items: start; }
}

@media (max-width: 42rem) {
  .demo-warning,
  .study-card > header,
  .proof-matrix { grid-template-columns: 1fr; }
  .matrix-blueprint ol,
  .metric-strip { grid-template-columns: 1fr; }
  .metric-strip li + li { border-block-start: 1px solid var(--line); border-inline-start: 0; }
  .proof-matrix > section:nth-child(odd) { border-inline-end: 0; }
  .study-card > footer { align-items: stretch; flex-direction: column; }
  .study-card > footer .button { inline-size: 100%; }
}

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