/* Case studies (single-case_study.php, archive-case_study.php).
   Sits on top of assets/post/post.css, which supplies the variables, prose,
   buttons, CTA and related cards. */

/* The header band blends into the dark hero. */
.cs-page .site-top{background:var(--forest)}

.cs-hero{position:relative;background:var(--forest);color:var(--cream);padding:48px 0 64px;overflow:hidden}
.cs-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(198,243,107,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(198,243,107,.05) 1px,transparent 1px);background-size:56px 56px}
.cs-hero .wrap{position:relative}
.cs-hero .crumbs{color:rgba(244,241,234,.6)}
.cs-hero .crumbs a:hover,.cs-hero .crumbs .cur{color:var(--lime)}
.cs-kick{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:28px;font-family:var(--mono);font-size:14px;color:var(--lime)}
.cs-hero h1{font-family:var(--display);font-weight:700;font-size:clamp(34px,5vw,62px);line-height:1.04;letter-spacing:-.03em;color:var(--cream);margin:16px 0 18px;max-width:940px}
.cs-hero h1 .hl{color:var(--lime)}
.cs-hero .lead{font-size:19px;color:rgba(244,241,234,.78);max-width:720px;text-wrap:pretty}
.cs-by{margin-top:18px;font-size:14px;color:rgba(244,241,234,.6)}
.cs-by b{color:var(--cream);font-weight:600}

/* "PHP 5.6 → PHP 8.4" */
.cs-move{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:13px;font-weight:500;padding:5px 10px;border-radius:8px;background:rgba(198,243,107,.12);color:var(--cream)}
.cs-move i{font-style:normal;color:var(--lime)}
.cs-move b{font-weight:500;color:var(--lime)}

/* Key numbers */
.cs-nums{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:40px}
.cs-nums-1{grid-template-columns:minmax(0,300px)}
.cs-nums-2{grid-template-columns:repeat(2,minmax(0,300px))}
.cs-nums-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cs-nums>div{background:var(--forest-3);border:1px solid var(--line-dark);border-radius:18px;padding:22px 24px}
.cs-nums b{display:block;font-family:var(--display);font-weight:700;font-size:clamp(30px,3.6vw,44px);line-height:1.05;letter-spacing:-.02em;color:var(--lime)}
.cs-nums span{display:block;margin-top:8px;font-size:14.5px;line-height:1.4;color:rgba(244,241,234,.78)}

.cs-page .layout{padding-top:56px}

/* Story + sidebar. On wide screens the story starts at the hero's left edge
   (not squeezed into the middle) and the sidebar keeps the sections and a way
   to get in touch in view. Narrower screens keep the single reading column. */
.cs-side{display:none}
@media (min-width:1100px){
  .cs-page .layout{display:grid;grid-template-columns:minmax(0,800px) 300px;justify-content:space-between;column-gap:56px;align-items:start}
  .cs-page article{max-width:none;margin:0}
  .cs-side{display:block;position:sticky;top:110px}
  .admin-bar .cs-side{top:142px}
}
.cs-toc{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:20px 22px}
.cs-toc .sec-label{margin-bottom:8px;font-size:13px}
.cs-toc ol{list-style:none;margin:0;padding:0;counter-reset:cs}
.cs-toc a{display:flex;gap:10px;padding:8px 0;font-size:14.5px;line-height:1.35;color:var(--ink);border-bottom:1px dashed var(--line);transition:color .15s}
.cs-toc li:last-child a{border-bottom:0;padding-bottom:2px}
.cs-toc a::before{counter-increment:cs;content:counter(cs,decimal-leading-zero);flex:none;font-family:var(--mono);font-size:12px;color:var(--forest-3);padding-top:2px}
.cs-toc a:hover{color:var(--forest)}
.cs-toc a.active{color:var(--forest);font-weight:600}
.cs-side-cta{margin-top:14px;background:var(--forest);border-radius:18px;padding:22px}
.cs-side-cta b{display:block;font-family:var(--display);font-weight:700;font-size:19px;line-height:1.2;color:var(--cream)}
.cs-side-cta p{margin:8px 0 16px;font-size:14px;line-height:1.5;color:rgba(244,241,234,.75)}
.cs-side-cta .btn{padding:11px 16px;font-size:14.5px}

/* At a glance */
.cs-glance{margin-bottom:44px}
.cs-glance dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));background:var(--paper);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.cs-glance dl>div{padding:16px 18px;box-shadow:1px 0 0 var(--line),0 1px 0 var(--line)}
.cs-glance dt{font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.cs-glance dd{margin-top:4px;font-family:var(--display);font-weight:600;font-size:18px;line-height:1.25;color:var(--forest)}

/* Tables written in the story: WordPress's default black borders off */
.cs-page .prose .wp-block-table thead{border-bottom:0}
.cs-page .prose .wp-block-table th,.cs-page .prose .wp-block-table td{border:0}
.cs-page .prose .wp-block-table td{border-top:1px solid var(--line)}

/* Results */
.cs-results{margin-top:56px}
.cs-table{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:var(--paper)}
.cs-table table{width:100%;border-collapse:collapse;font-size:15.5px}
.cs-table thead th{text-align:left;font-family:var(--mono);font-weight:500;font-size:12.5px;color:var(--forest-3);background:var(--cream-2);padding:12px 16px}
.cs-table tbody th{text-align:left;font-weight:600;color:var(--forest)}
.cs-table tbody th,.cs-table td{padding:13px 16px;border-top:1px solid var(--line);vertical-align:top}
.cs-table td{color:var(--muted)}
.cs-table td.after{font-weight:600;color:var(--forest)}

/* Quote */
.cs-quote{margin-top:48px;background:var(--forest);border-radius:22px;padding:32px}
.cs-quote blockquote{font-family:var(--display);font-weight:500;font-size:clamp(20px,2.2vw,26px);line-height:1.35;letter-spacing:-.01em;color:var(--cream)}
.cs-quote figcaption{margin-top:14px;font-family:var(--mono);font-size:13px;color:var(--lime)}

/* CTA: a button in place of the post page's email form */
.cs-cta-go{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:10px}

/* Cards: one wide row per case study, the story left and its numbers right.
   Looks finished with one case study and still reads well with twenty. */
.cs-more,.cs-page .related{margin-top:64px}
.cs-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:20px}
.cs-card{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:48px;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:40px 44px;box-shadow:var(--shadow);transition:transform .2s,border-color .2s}
.cs-card-plain{grid-template-columns:minmax(0,1fr)}
.cs-card:hover{transform:translateY(-3px);border-color:var(--forest)}
.cs-card[hidden]{display:none}
.cs-card-main{display:flex;flex-direction:column;align-items:flex-start;gap:16px;min-width:0}
.cs-card-tags{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.cs-tag{font-family:var(--mono);font-size:13px;font-weight:500;padding:5px 10px;border-radius:8px;background:var(--lime);color:var(--forest)}
.cs-card .cs-move{background:var(--forest)}
.cs-card h3{font-family:var(--display);font-weight:700;font-size:clamp(24px,2.6vw,34px);line-height:1.1;letter-spacing:-.02em;color:var(--forest);max-width:640px}
.cs-card p{font-size:17px;line-height:1.6;color:var(--muted);max-width:600px}
.cs-card-go{margin-top:6px;font-weight:600;font-size:15.5px;color:var(--forest)}
.cs-card:hover .cs-card-go{text-decoration:underline;text-underline-offset:4px}
.cs-card-nums{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.cs-card-nums-1{grid-template-columns:minmax(0,1fr)}
.cs-card-nums-3>span:last-child{grid-column:1/-1}
.cs-card-nums>span{display:flex;flex-direction:column;justify-content:space-between;gap:10px;min-height:118px;background:var(--forest);border-radius:18px;padding:20px 22px}
.cs-card-nums b{font-family:var(--display);font-weight:700;font-size:clamp(26px,2.6vw,34px);line-height:1.05;letter-spacing:-.02em;color:var(--lime)}
.cs-card-nums small{font-size:13.5px;line-height:1.4;color:rgba(244,241,234,.78)}

/* Hub */
.cs-hub{padding-top:48px}
.cs-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.cs-chips[hidden]{display:none}
.cs-chips button{font-family:var(--mono);font-size:13px;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--paper);color:var(--forest);cursor:pointer}
.cs-chips button.on{background:var(--forest);border-color:var(--forest);color:var(--lime)}
.cs-empty{padding:48px 24px;text-align:center;font-size:17px;color:var(--muted);background:var(--paper);border:1px dashed var(--line);border-radius:20px}
.cs-hub .cs-cta{margin-top:56px}

@media (max-width:900px){
  .cs-nums,.cs-nums-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cs-glance dl{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cs-card{grid-template-columns:minmax(0,1fr);gap:28px;padding:30px}
}
@media (max-width:520px){
  .cs-hero{padding:32px 0 44px}
  .cs-nums,.cs-nums-1,.cs-nums-2,.cs-nums-3{grid-template-columns:minmax(0,1fr)}
  .cs-glance dl{grid-template-columns:minmax(0,1fr)}
  .cs-card{padding:24px 22px;border-radius:20px}
  .cs-card p{font-size:16px}
  .cs-card-nums{gap:10px}
  .cs-card-nums>span{min-height:0;padding:16px 16px 18px}
  .cs-quote{padding:24px}
  .cs-table table{font-size:14.5px}
  .cs-table thead th,.cs-table tbody th,.cs-table td{padding:11px 12px}
}