/* ════════════════════════════════════════════════════════════════
   FK & Partner Co. — project case-study page styles
   Extends style.css (design-system tokens). CSP-safe: no inline styles.
   ════════════════════════════════════════════════════════════════ */

.case-main{max-width:var(--maxw);margin:0 auto;padding:0 30px}

/* hero */
.case-hero{padding:44px 0 30px}
.case-eyebrow{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);margin-bottom:16px}
.case-eyebrow .sep{color:#C2D0DC;margin:0 8px}
.case-title{font-weight:800;font-size:clamp(34px,5.2vw,62px);line-height:1.02;letter-spacing:-.025em;margin:0 0 18px;max-width:20ch;text-wrap:balance}
.case-subtitle{font-size:clamp(17px,1.6vw,22px);line-height:1.5;max-width:60ch;color:var(--body);margin:0 0 30px}
.case-hero-img{width:100%;height:clamp(300px,46vw,520px);object-fit:cover;border:1px solid var(--border-rule);border-radius:var(--r-panel);background:var(--lightblue)}
.quick-facts{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:28px 0 8px}
.qf{background:var(--lightblue);border:1px solid var(--border-card);border-radius:var(--r-card);padding:18px 20px}
.qf .k{font-family:'IBM Plex Mono',monospace;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint-3);margin-bottom:8px}
.qf .v{font-size:16px;font-weight:600;color:var(--ink);line-height:1.3}

/* generic case section */
.case-sec{padding:40px 0;border-top:1px solid var(--border-card)}
.case-sec .tag{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--sky);margin-bottom:14px}
.case-sec h2{font-weight:700;font-size:clamp(24px,3vw,34px);letter-spacing:-.015em;margin:0 0 18px;color:var(--ink)}
.case-prose{display:flex;flex-direction:column;gap:16px;max-width:68ch;font-size:16.5px;line-height:1.75;color:var(--body)}
.case-cols{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:start}
@media (max-width:900px){.case-cols{grid-template-columns:1fr}}

/* challenge callout */
.challenge-card{background:var(--lightblue);border:1px solid var(--border-card);border-inline-start:4px solid var(--orange);border-radius:var(--r-card);padding:24px 26px}
.constraints{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-direction:column;gap:10px}
.constraints li{display:flex;gap:10px;font-size:15px;color:var(--body)}
.constraints li .m{color:var(--orange);font-family:'IBM Plex Mono',monospace}

/* approach flow diagram */
.flow-wrap{background:#fff;border:1px solid var(--border-card);border-radius:var(--r-card);padding:24px;overflow-x:auto;margin-bottom:24px}
.flow-wrap img{min-width:760px;width:100%;height:auto}
.adapt{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:8px}
@media (max-width:700px){.adapt{grid-template-columns:1fr}}
.adapt .a{background:#fff;border:1px solid var(--border-card);border-radius:12px;padding:16px 18px;font-size:14.5px;color:var(--body)}
.adapt .a b{color:var(--ink)}

/* specs table (reuse detail-specs-table look) */
.spec-table{width:100%;border-collapse:collapse}
.spec-table caption{text-align:start;font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.1em;color:var(--faint-3);padding-bottom:8px}
.spec-table th,.spec-table td{padding:12px 0;border-top:1px solid var(--border-card);font-size:15px;text-align:start;vertical-align:top}
.spec-table th{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.06em;color:var(--faint);font-weight:600;text-transform:uppercase}
.spec-table td:first-child{font-weight:500;color:var(--ink);padding-inline-end:18px;width:46%}
.spec-table td:last-child{color:var(--body)}

/* implementation timeline */
.timeline2{display:flex;flex-direction:column;gap:0}
.timeline2 .row{display:grid;grid-template-columns:130px 1fr;gap:18px;padding:14px 0;border-top:1px dashed var(--border-rule);align-items:baseline}
.timeline2 .row .d{font-family:'IBM Plex Mono',monospace;font-size:13px;font-weight:600;color:var(--sky)}
.timeline2 .row .t{font-size:15.5px;color:var(--body)}

/* results */
.results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.result-card{background:var(--lightblue);border:1px solid var(--border-card);border-radius:var(--r-card);padding:22px}
.result-card .b{color:var(--green);font-size:18px}
.result-card p{margin:8px 0 0;font-size:15px;line-height:1.6;color:var(--body)}
.note-inline{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--faint);margin-top:14px}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:820px){.gallery{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.gallery{grid-template-columns:1fr}}
.gallery figure{margin:0}
.gallery button.gitem{display:block;width:100%;padding:0;border:1px solid var(--border-card);background:var(--lightblue);border-radius:var(--r-card);overflow:hidden;cursor:zoom-in}
.gallery img,.gallery svg{display:block;width:100%;height:200px;object-fit:cover}
.gallery .svg-illus{height:200px;display:flex;align-items:center;justify-content:center;background:#fff}
.gallery figcaption{font-size:12.5px;color:var(--muted);padding:10px 4px 0;line-height:1.5}
.illus-flag{font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:.06em;color:var(--faint-3);text-transform:uppercase}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(15,24,33,.92);display:none;align-items:center;justify-content:center;padding:40px}
.lightbox.open{display:flex}
.lightbox img{max-width:92vw;max-height:84vh;border-radius:8px}
.lightbox .lb-cap{position:absolute;bottom:24px;inset-inline:0;text-align:center;color:#fff;font-size:14px;padding:0 20px}
.lightbox .lb-close,.lightbox .lb-nav{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:none;border-radius:10px;cursor:pointer;font-size:24px;width:48px;height:48px;line-height:1}
.lightbox .lb-close{top:24px;inset-inline-end:24px}
.lightbox .lb-prev{inset-inline-start:24px;top:50%;transform:translateY(-50%)}
.lightbox .lb-next{inset-inline-end:24px;top:50%;transform:translateY(-50%)}

/* related */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:820px){.related-grid{grid-template-columns:1fr}}
.related-card{display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--border-card);border-radius:var(--r-card);padding:24px;transition:transform .4s var(--ease),box-shadow .4s,border-color .3s}
.related-card:hover{transform:translateY(-6px);box-shadow:0 26px 54px -30px rgba(21,50,74,.34);border-color:var(--orange-hover)}
.related-card .rc-cat{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.04em;color:var(--cc,var(--sky))}
.related-card h3{font-size:19px;line-height:1.25;margin:0;color:var(--ink)}
.related-card .rc-meta{font-size:13px;color:var(--muted);margin-top:auto}

/* CTA */
.case-cta{background:var(--navy);border-radius:var(--r-panel);padding:48px;text-align:center;margin:40px 0 60px}
.case-cta h2{color:#fff;font-size:clamp(24px,3vw,34px);margin:0 0 12px}
.case-cta p{color:#C7D6E2;max-width:48ch;margin:0 auto 24px;font-size:16px}