/* Case study pages. Same tokens as the home page (which inlines its own CSS):
   a short pine header field, a sage reading page with a sticky outcomes rail. */
@font-face {
    font-family: "Young Serif";
    src: url("/fonts/young-serif-latin.woff2") format("woff2");
    font-weight: 400;
    font-display: swap;
}
@font-face {
    font-family: "Onest";
    src: url("/fonts/onest-latin.woff2") format("woff2");
    font-weight: 400 600;
    font-display: swap;
}

:root {
    --page: #ECEFE8;
    --surface: #E2E7DE;
    --ink: #16211C;
    --muted: #55625B;
    --line: #C5CDC1;
    --emph: #1E5A44;

    --pine: #133B2E;
    --on-pine: #EAF2EC;
    --on-pine-muted: #A9C2B4;
    --pine-line: rgba(234, 242, 236, 0.18);
    --gold: #F0B54A;
    --on-gold: #1A1408;

    --font-display: "Young Serif", Georgia, "Times New Roman", serif;
    --font-body: "Onest", system-ui, -apple-system, "Segoe UI", sans-serif;

    --gutter: clamp(16px, 5vw, 56px);
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --page: #0F1613;
        --surface: #141E1A;
        --ink: #E6ECE7;
        --muted: #9AA9A0;
        --line: #26332D;
        --emph: #8FD1AF;
        --pine: #163A2D;
        --pine-line: rgba(234, 242, 236, 0.14);
        color-scheme: dark;
    }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--page);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: 1.125rem;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { text-wrap: balance; font-weight: 400; }
p, li { text-wrap: pretty; }
a { color: inherit; }

:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
    border-radius: 2px;
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -100px;
    z-index: 10;
    padding: 8px 14px;
    background: var(--gold);
    color: var(--on-gold);
}
.skip-link:focus { top: 16px; }

.wrap {
    max-width: 1180px;
    margin-inline: auto;
    padding-inline: var(--gutter);
}

/* ---------- Header field ---------- */

.field {
    background: var(--pine);
    color: var(--on-pine);
}

.site-header {
    display: flex;
    align-items: center;
    gap: 36px;
    padding-block: 26px;
}

.brand {
    margin-right: auto;
    font-family: var(--font-display);
    font-size: 1.375rem;
    text-decoration: none;
    white-space: nowrap;
}
.brand span { color: var(--on-pine-muted); }

.main-nav { display: flex; gap: 30px; }

.main-nav a {
    font-size: 0.96875rem;
    color: var(--on-pine-muted);
    text-decoration: none;
}
.main-nav a:hover,
.main-nav a[aria-current] { color: var(--on-pine); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 22px;
    border: 1.5px solid transparent;
    border-radius: 999px;
    font: 500 0.96875rem/1.2 var(--font-body);
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}
.btn-gold { background: var(--gold); color: var(--on-gold); }
.btn-gold:hover { background: var(--on-pine); }
.btn-ghost { background: transparent; color: var(--on-pine); border-color: var(--pine-line); }
.btn-ghost:hover { border-color: var(--on-pine); }

.case-hero {
    padding-block: clamp(32px, 6vw, 80px) clamp(40px, 6vw, 72px);
}

.crumb {
    margin: 0 0 20px;
    font-size: 0.9375rem;
    color: var(--on-pine-muted);
}
.crumb a { color: var(--gold); text-underline-offset: 4px; }

.case-hero h1 {
    margin: 0;
    max-width: 18ch;
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 6vw, 4.75rem);
    line-height: 1.02;
    letter-spacing: -0.02em;
}

.case-standfirst {
    margin: 24px 0 0;
    max-width: 58ch;
    font-size: 1.1875rem;
    color: var(--on-pine);
}

.facts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: clamp(40px, 6vw, 64px) 0 0;
    border-top: 1px solid var(--pine-line);
}

.facts div {
    padding: 16px 20px 0 0;
    min-width: 0;
}

.facts dt {
    font-size: 0.8125rem;
    color: var(--on-pine-muted);
}

.facts dd {
    margin: 2px 0 0;
    font-size: 0.96875rem;
    font-weight: 500;
}

/* ---------- Body ---------- */

.case-body {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.9fr);
    gap: 32px clamp(40px, 6vw, 88px);
    padding-block: clamp(56px, 8vw, 104px);
}

.glance {
    align-self: start;
    position: sticky;
    top: 24px;
    min-width: 0;
}

.glance h2,
.case-section h2 {
    margin: 0 0 18px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    line-height: 1.2;
}

.glance ul {
    margin: 0;
    padding: 0;
    list-style: none;
    border-top: 1px solid var(--line);
}

.glance li {
    padding-block: 16px;
    border-bottom: 1px solid var(--line);
}

.glance .num {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.4vw, 2.75rem);
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--emph);
}

.glance .what {
    display: block;
    margin-top: 6px;
    font-size: 0.9375rem;
    color: var(--muted);
}

.case-main { min-width: 0; }

.case-section + .case-section {
    margin-top: clamp(40px, 5vw, 56px);
    padding-top: clamp(32px, 4vw, 44px);
    border-top: 1px solid var(--line);
}

.case-section p {
    margin: 0 0 16px;
    max-width: 64ch;
    color: var(--muted);
}

.case-section .lede {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.2vw, 1.625rem);
    line-height: 1.35;
    color: var(--ink);
}

.case-section ul.steps {
    margin: 0;
    padding: 0;
    list-style: none;
    max-width: 64ch;
}

.case-section ul.steps li {
    position: relative;
    padding: 0 0 14px 28px;
    color: var(--muted);
}

.case-section ul.steps li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 0.62em;
    width: 12px;
    height: 2px;
    background: var(--gold);
}

.stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.stack li {
    padding: 5px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 0.875rem;
    color: var(--ink);
    background: var(--surface);
}

.pullquote {
    margin: 8px 0 24px;
    padding: 4px 0 4px 22px;
    border-left: 3px solid var(--gold);
    max-width: 52ch;
    font-family: var(--font-display);
    font-size: 1.25rem;
    line-height: 1.4;
    color: var(--ink);
}

.case-links { margin: 28px 0 0; }

.table-wrap {
    overflow-x: auto;
    margin-top: 24px;
}

.bench {
    width: 100%;
    min-width: 520px;
    border-collapse: collapse;
    font-variant-numeric: tabular-nums;
}

.bench caption {
    margin-bottom: 10px;
    text-align: left;
    font-size: 0.9375rem;
    color: var(--muted);
}

.bench th,
.bench td {
    padding: 12px 14px;
    text-align: right;
    border-bottom: 1px solid var(--line);
}

.bench th:first-child { text-align: left; }

.bench td { white-space: nowrap; }

.bench thead th {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--muted);
    border-bottom: 1.5px solid var(--ink);
}

.bench tbody th { font-weight: 500; }

.bench tbody tr:first-child th,
.bench tbody tr:first-child td {
    color: var(--emph);
    font-weight: 600;
}

.case-section code {
    font-size: 0.9em;
    padding: 1px 5px;
    border-radius: 4px;
    background: var(--surface);
}

/* ---------- Next case + contact ---------- */

.next {
    border-top: 1px solid var(--line);
    background: var(--surface);
}

.next a {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
    padding-block: clamp(32px, 5vw, 56px);
    text-decoration: none;
}

.next .label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.9375rem;
    color: var(--muted);
}

.next .title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3.4vw, 2.5rem);
    line-height: 1.1;
}

.next .arrow {
    font-size: 2rem;
    color: var(--emph);
    transition: transform 0.2s ease;
}
.next a:hover .arrow { transform: translateX(6px); }
.next a:hover .title { color: var(--emph); }

.cta {
    padding-block: clamp(56px, 8vw, 96px) clamp(48px, 6vw, 72px);
}

.cta h2 {
    margin: 0 0 12px;
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.05;
    letter-spacing: -0.02em;
}

.cta p {
    margin: 0 0 28px;
    color: var(--on-pine-muted);
}

.site-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 6px 24px;
    padding-block: 24px 32px;
    border-top: 1px solid var(--pine-line);
    font-size: 0.875rem;
    color: var(--on-pine-muted);
}
.site-footer p { margin: 0; }
.site-footer a { color: var(--on-pine); text-underline-offset: 3px; }

.link-btn {
    appearance: none;
    padding: 0;
    border: 0;
    background: none;
    color: var(--on-pine);
    font: inherit;
    text-decoration: underline;
    text-underline-offset: 3px;
    cursor: pointer;
}
.link-btn:hover { color: var(--gold); }


/* Review mode (#review): highlights inferred content awaiting validation */
.review .inferred {
    outline: 2px dashed #D9480F;
    outline-offset: 2px;
    background: rgba(217, 72, 15, 0.08);
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
    .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 8px; }
    .case-body { grid-template-columns: minmax(0, 1fr); }
    .glance { position: static; }
    .glance ul {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        column-gap: 24px;
    }
}

@media (max-width: 640px) {
    body { font-size: 1.0625rem; }
    .main-nav { display: none; }
    .site-header { padding-block: 18px; }
}