/* case-studies.css - hub (/case-studies/) and story pages (/case-studies/<slug>).
   On the redesign since 1 Nov 2026 (review item 31): the pages use the bs-ds layout, so the
   brand tokens (ds-chrome.css) and fonts apply: Bricolage Grotesque for headlines, Inter for
   text, two families only. The --cs-* names map onto those tokens. */

:root {
    --cs-teal: var(--ds-teal);
    --cs-teal-700: var(--ds-teal-700);
    --cs-ink-teal: var(--ds-ink-teal);
    --cs-navy: var(--ds-navy);
    --cs-mint: var(--ds-mint);
    --cs-tint: var(--ds-teal-50);
    --cs-border: var(--ds-border);
    --cs-muted: var(--ds-text-muted);
}

.cs-page { color: var(--ds-text); background: #fff; }
.cs-page .sr-only { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.cs-wrap { max-width: 1200px; margin: 0 auto; padding: 0 clamp(20px, 4vw, 40px); }
.cs-section { padding: clamp(48px, 7vw, 96px) 0; }
.cs-section + .cs-section { padding-top: 0; }

.cs-eyebrow {
    font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
    color: var(--cs-teal-700); margin-bottom: 12px;
}
.cs-page h1 { font-family: var(--ds-font-display); font-weight: 700; font-size: clamp(36px, 5vw, 60px); line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 16px; color: var(--ds-deck-grey); }
.cs-page h2 { font-family: var(--ds-font-display); font-weight: 700; font-size: clamp(26px, 3.2vw, 38px); line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 16px; color: var(--ds-deck-grey); }
.cs-page h3 { font-family: var(--ds-font-display); font-weight: 700; font-size: 20px; line-height: 1.3; margin: 0 0 8px; color: var(--cs-navy); }
.cs-page p { margin: 0; }
.cs-lead { font-size: clamp(17px, 1.6vw, 20px); line-height: 1.6; color: var(--cs-muted); max-width: 760px; }

/* placeholders: obvious so nobody ships one by accident */
.cs-todo {
    display: inline-block; padding: 1px 8px; border: 1.5px dashed #C05621; border-radius: 6px;
    color: #9C4221; background: #FFFAF0; font-size: .85em; font-weight: 600; line-height: 1.5;
}
.cs-todo-box {
    display: flex; align-items: center; justify-content: center; min-height: 220px; padding: 24px;
    border: 2px dashed #C05621; border-radius: 18px; background: #FFFAF0; color: #9C4221;
    font-weight: 600; text-align: center;
}
.cs-draft-banner {
    display: block; width: fit-content; background: var(--cs-ink-teal); color: #fff; padding: 8px 14px;
    border-radius: 10px; font-size: 14px; font-weight: 600; margin-bottom: 20px;
}

/* hero */
.cs-hero { padding: clamp(40px, 6vw, 80px) 0 clamp(40px, 5vw, 64px); background: var(--cs-tint); }
.cs-curio-intro { display: flex; align-items: center; gap: 16px; margin-top: 24px; }
.cs-curio-intro img { width: 72px; height: 72px; flex: none; }
.cs-curio-intro p {
    margin: 0; padding: 14px 18px; background: #fff; border-radius: 18px 18px 18px 4px;
    box-shadow: 0 6px 24px rgba(13, 68, 78, .08); font-size: 16px; line-height: 1.5; max-width: 560px;
}

/* stat band */
.cs-stats {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255, 255, 255, .15);
    border-radius: 24px; overflow: hidden; margin-top: clamp(32px, 4vw, 48px);
}
.cs-stat { background: var(--cs-ink-teal); padding: 28px 24px; color: #fff; text-decoration: none; display: block; }
.cs-stat strong { display: block; font-family: var(--ds-font-display); font-weight: 800; font-size: clamp(30px, 3.4vw, 42px); line-height: 1.1; color: var(--cs-mint); }
.cs-stat span { font-size: 15px; color: rgba(255, 255, 255, .85); }
a.cs-stat:hover strong, a.cs-stat:focus-visible strong { text-decoration: underline; }

/* filters */
.cs-filters { display: grid; gap: 14px; margin-bottom: 32px; }
.cs-filter-group { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; border: 0; padding: 0; margin: 0; }
.cs-filter-group legend { float: left; width: 90px; font-size: 14px; font-weight: 600; color: var(--cs-muted); padding: 0; }
/* .cs-filters prefix: outranks the theme's button and button:focus rules */
.cs-filters .cs-chip {
    font-family: inherit; font-size: 14px; font-weight: 600; line-height: 1.2; height: auto; min-height: 40px;
    padding: 8px 16px; border: 1.5px solid var(--cs-border); border-radius: 999px;
    background: #fff; color: var(--cs-navy); cursor: pointer;
}
.cs-filters .cs-chip::after { content: none; }
.cs-filters .cs-chip[aria-pressed="true"] { background: var(--cs-teal-700); border-color: var(--cs-teal-700); color: #fff; }
.cs-filters .cs-chip:focus { border: 1.5px solid var(--cs-border); }
.cs-filters .cs-chip[aria-pressed="true"]:focus { border-color: var(--cs-teal-700); }
.cs-filters .cs-chip:focus-visible { outline: 3px solid var(--cs-teal); outline-offset: 2px; }

/* cards */
.cs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; list-style: none; padding: 0; margin: 0; }
.cs-card {
    display: flex; flex-direction: column; height: 100%; padding: 24px; border: 1px solid var(--cs-border);
    border-radius: 22px; background: #fff; color: inherit; text-decoration: none;
    transition: box-shadow .2s, transform .2s;
}
.cs-card:hover, .cs-card:focus-visible { box-shadow: 0 12px 32px rgba(13, 68, 78, .12); transform: translateY(-2px); }
.cs-card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; }
.cs-logo { height: 44px; max-width: 140px; object-fit: contain; }
.cs-letter {
    width: 48px; height: 48px; border-radius: 14px; background: var(--cs-ink-teal); color: var(--cs-mint);
    display: grid; place-items: center; font-family: var(--ds-font-display); font-size: 22px; font-weight: 700;
}
.cs-badge-draft { font-size: 12px; font-weight: 700; color: #9C4221; background: #FFFAF0; border: 1px dashed #C05621; border-radius: 6px; padding: 2px 8px; }
.cs-card-industry { font-size: 13px; font-weight: 600; color: var(--cs-teal-700); text-transform: uppercase; letter-spacing: .06em; }
.cs-card-result { margin: 12px 0 16px; }
.cs-card-result strong { display: block; font-family: var(--ds-font-display); font-weight: 800; font-size: 32px; line-height: 1.1; color: var(--cs-teal-700); }
.cs-card-result span { color: var(--cs-muted); font-size: 15px; }
.cs-badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 12px; }
.cs-badge { font-size: 12px; font-weight: 600; background: #E0F5F4; color: var(--cs-ink-teal); border-radius: 999px; padding: 4px 10px; }
.cs-empty { padding: 40px; border: 1px dashed var(--cs-border); border-radius: 22px; text-align: center; color: var(--cs-muted); }

/* story */
.cs-snapshot { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 32px 0; }
.cs-fact { border: 1px solid var(--cs-border); border-radius: 18px; padding: 16px 18px; }
.cs-fact dt { font-size: 13px; color: var(--cs-muted); font-weight: 600; margin-bottom: 4px; }
.cs-fact dd { margin: 0; font-weight: 600; }
.cs-headline-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cs-headline-stats div { background: var(--cs-ink-teal); color: #fff; border-radius: 20px; padding: 24px; }
.cs-headline-stats strong { display: block; font-family: var(--ds-font-display); font-weight: 800; font-size: clamp(30px, 3.6vw, 44px); line-height: 1.1; color: var(--cs-mint); }
.cs-figure { margin: 0; }
.cs-figure img { width: 100%; height: auto; border-radius: 20px; border: 1px solid var(--cs-border); }
.cs-results { width: 100%; border-collapse: collapse; }
.cs-results th, .cs-results td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--cs-border); vertical-align: top; }
.cs-results th { width: 160px; color: var(--cs-muted); font-weight: 600; }
.cs-quote { margin: 0; padding: clamp(24px, 4vw, 40px); background: var(--cs-tint); border-radius: 24px; }
.cs-quote p { font-size: clamp(18px, 1.8vw, 22px); line-height: 1.55; margin: 0 0 20px; color: var(--ds-text); }
.cs-quote footer { display: flex; align-items: center; gap: 14px; }
.cs-quote img { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; }
.cs-chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.cs-chips li { border: 1.5px solid #9EDCDA; border-radius: 999px; padding: 8px 16px; font-weight: 600; }
.cs-cta {
    background: var(--cs-teal-700); color: #fff; border-radius: 28px; padding: clamp(28px, 5vw, 56px);
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px;
}
.cs-cta h2 { color: #fff; margin: 0; }
.cs-cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.cs-btn {
    display: inline-flex; align-items: center; min-height: 48px; padding: 0 24px; border-radius: 12px;
    font-weight: 700; text-decoration: none; border: 2px solid #fff;
}
.cs-btn-primary { background: #fff; color: var(--cs-teal-700); }
.cs-btn-ghost { color: #fff; }
.cs-btn:focus-visible { outline: 3px solid var(--cs-mint); outline-offset: 2px; }
.cs-back { display: inline-block; margin-bottom: 20px; color: var(--cs-teal-700); font-weight: 600; text-decoration: none; }

@media (max-width: 991.98px) {
    .cs-grid { grid-template-columns: repeat(2, 1fr); }
    .cs-stats, .cs-snapshot { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .cs-grid, .cs-headline-stats { grid-template-columns: 1fr; }
    .cs-filter-group legend { float: none; width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
    .cs-card { transition: none; }
    .cs-card:hover { transform: none; }
}