/* References: design/refs/aboard (quiet surfaces, system type), design/refs/amie (readable copy, FAQ).
   Extends Sticker Banner's existing berry accent and real pack preview components. */
.collection-page{--collection-space:64px;--radius-small:8px;--radius-panel:16px;background:#fff}
.collection-layout{display:grid;grid-template-columns:minmax(0,1fr);max-width:1248px;padding:0 32px;margin:auto}
.collection-main{min-width:0;width:100%;max-width:none;margin:0;padding:0 0 var(--collection-space)}
.collection-breadcrumb{display:flex;gap:12px;align-items:center;min-height:56px;font-size:13px;color:var(--muted)}
.collection-breadcrumb a{display:inline-flex;align-items:center;min-height:44px}
.collection-intro{padding:16px 0 24px}
.collection-intro h1{font-size:48px;line-height:1.08;letter-spacing:-.03em;font-weight:650;margin:0 0 16px}
.collection-intro>p{max-width:720px;margin:0;font-size:18px;line-height:28px;color:var(--muted)}
.collection-intro .collection-facts{display:flex;flex-wrap:wrap;gap:4px 12px;font-size:13px;line-height:20px;margin-top:16px;color:var(--brand)}
.collection-controls{border-top:1px solid var(--line);padding-top:20px}
.collection-controls .pack-filter-label{width:auto;margin-right:8px}
.collection-controls .pack-chips{flex-wrap:wrap;overflow:visible}
.collection-controls .pack-chips button{min-height:44px}
.collection-controls .pack-toolbar{margin-top:12px}
.collection-controls #toggle-previews{font-size:13px;background:transparent;border:0;padding:8px 0 8px 12px;color:var(--brand)}
.collection-main .pack-grid{grid-template-columns:repeat(3,minmax(0,1fr));align-items:start;margin-top:16px}
.collection-main .pack-card{min-width:0;scroll-margin-top:24px}
.collection-main .pack-heading{flex-wrap:wrap;gap:4px 8px}
.collection-main .pack-heading h3{flex-basis:100%;font-size:18px;font-weight:600;margin-top:12px}
.collection-main .pack-sizes{margin-top:4px}
.collection-main .pack-sizes button{min-height:44px;min-width:44px}
.collection-main .pack-duration{font-size:12px;margin-left:auto;color:var(--muted)}
.collection-main .pack-meta{font-size:13px;margin:8px 0 0}
.collection-main .desktop-copy{display:inline}.collection-main .mobile-copy{display:none}
.collection-main .pack-count{position:absolute;bottom:8px;left:8px;padding:3px 8px;border-radius:999px;background:#fff;color:var(--text);font-size:11px;box-shadow:0 1px 4px #0000000f}
.collection-main .pack-files{display:none}
.collection-main .pack-save{width:100%;font-size:13px}
.collection-main .pack-save summary{display:flex;align-items:center;min-height:44px;cursor:pointer;color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.collection-main .pack-save summary::after{content:'+';margin-left:auto}
.collection-main .pack-save[open] summary::after{content:'\2212'}
.collection-main .pack-save p{margin:0 0 8px;color:var(--muted)}
.collection-main .pack-save-files{display:flex;flex-wrap:wrap;gap:8px}
.collection-main .pack-save-files a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;border-radius:8px;background:var(--soft);font-size:14px;text-decoration:none}
.collection-main .pack-actions{gap:8px;margin-top:4px}
.collection-main .pack-zip{font-size:13px;padding-inline:16px;min-height:44px}
.collection-main .pack-credit{overflow-wrap:anywhere;font-size:12px;line-height:18px;padding-top:16px}
.collection-main .pack-credit a{display:inline-block;min-height:28px}
.collection-prose{max-width:720px;padding-top:var(--collection-space);scroll-margin-top:24px}
.collection-prose h2,.collection-related h2{font-size:30px;line-height:1.2;letter-spacing:-.02em;font-weight:600;margin:0 0 20px}
.collection-prose p,.collection-prose li{font-size:16px;line-height:28px;color:#444852}
.collection-prose p{margin:0 0 16px}.collection-prose ol{padding-left:24px}.collection-prose li{padding-left:4px;margin:0 0 16px}
.collection-faq details{border-top:1px solid var(--line)}
.collection-faq summary{min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;font-size:16px;font-weight:600;cursor:pointer}
.collection-faq summary::after{content:'+';color:var(--brand);flex:none}.collection-faq details[open] summary::after{content:'\2212'}
.collection-faq details p{padding-bottom:12px}
.collection-related{padding-top:var(--collection-space)}
.collection-links{display:flex;flex-wrap:wrap;gap:8px}
.collection-links a{display:inline-flex;align-items:center;min-height:44px;padding:8px 16px;border-radius:999px;text-decoration:none;background:var(--bg);color:var(--text);font-size:14px}
.collection-links a[aria-current=page]{background:var(--soft);color:var(--brand)}
.collection-sidebar{display:none}.collection-helper{display:none}
.collection-discovery{margin:24px 0;max-width:100%}.collection-discovery h2{font-size:24px;margin:0 0 8px}.collection-discovery p{max-width:720px}.collection-discovery .collection-links{margin-top:12px}
.collection-page a:active:not(:focus-visible),.collection-page button:active:not(:focus-visible){transform:scale(.98)}
@media(hover:hover){.collection-links a:hover{background:var(--soft);color:var(--brand)}.collection-main .pack-zip:hover{background:#941546}}
@media(min-width:1600px){
 .collection-layout{max-width:1760px;grid-template-columns:224px minmax(0,1fr) 240px;gap:40px}
 .collection-sidebar,.collection-helper{display:block;align-self:start;position:sticky;top:32px;padding-top:32px}
 .rail-label{font-size:12px;color:var(--muted);margin:0 0 16px}
 .collection-sidebar .collection-links{display:flex;flex-direction:column;gap:4px}
 .collection-sidebar .collection-links a{background:transparent;border-radius:8px;padding-inline:12px}
 .collection-sidebar .collection-links a[aria-current=page]{background:var(--soft);color:var(--brand)}
 .all-templates{display:inline-flex;align-items:center;min-height:44px;font-size:13px;margin-top:12px;padding-left:12px}
 .collection-outline{display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--line);padding-top:20px;margin-top:20px}
 .collection-outline a{display:flex;align-items:center;min-height:44px;font-size:13px;color:var(--muted)}
 .collection-helper{padding-top:104px}.collection-helper h2{font-size:22px;line-height:28px;font-weight:600;margin:0 0 16px}
 .collection-helper p{font-size:14px;line-height:24px;color:var(--muted)}.collection-helper a{display:inline-flex;align-items:center;min-height:44px;font-size:14px}
 .helper-own{border-top:1px solid var(--line);margin-top:32px;padding-top:24px}
 .collection-main .pack-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:1000px){.collection-main .pack-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){
 .collection-page{--collection-space:48px}.collection-layout{padding:0 20px}.collection-breadcrumb{min-height:48px}
 .collection-intro{padding:8px 0 20px}.collection-intro h1{font-size:36px;line-height:40px;letter-spacing:-.025em}
 .collection-intro>p{font-size:16px;line-height:26px}.collection-intro .collection-facts{gap:4px 8px;font-size:12px}
 .collection-controls{padding-top:16px}.collection-main .pack-grid{grid-template-columns:1fr;gap:20px}
 .collection-prose h2,.collection-related h2{font-size:26px}.collection-page>header{flex-wrap:wrap;gap:4px 16px}
 .collection-page .site-nav{gap:16px;margin-left:0;width:100%;justify-content:space-between}
 .collection-page .site-nav a{font-size:13px;display:inline-flex;align-items:center;min-height:44px}
 .collection-main .pack-heading h3{flex-basis:auto}
}
@media(prefers-reduced-motion:reduce){.collection-page a:active,.collection-page button:active{transform:none}}