/* Shared layouts for the site's standalone collections. */
.collection-page .workspace{min-height:100vh;display:flex;flex-direction:column}
.collection-main{width:100%;max-width:1260px;flex:1;margin:0 auto;padding:40px clamp(20px,4vw,60px) 64px}
.page-breadcrumb{display:flex;align-items:center;gap:10px;min-width:0;font-size:12px;letter-spacing:0}
.page-breadcrumb a{color:var(--muted)}
.page-breadcrumb a:hover{color:var(--accent)}
.page-breadcrumb>span[aria-hidden]{color:var(--line-hi)}
.page-heading{position:relative;margin-bottom:32px;padding-bottom:29px;border-bottom:1px solid var(--line-hi)}
.page-kicker{display:flex;align-items:center;gap:9px;margin:0 0 12px;color:var(--accent);font:11px/1.6 var(--mono);letter-spacing:.09em}
.page-kicker::before{content:"";width:8px;height:8px;background:var(--mint);box-shadow:3px 3px 0 var(--surface-deep)}
.page-title{margin:0;color:var(--text);font-size:clamp(30px,3.5vw,46px);font-weight:750;line-height:1.25;letter-spacing:-.04em}
.page-intro{max-width:690px;margin:16px 0 0;color:var(--text-soft);font-size:15px;line-height:1.95}
.page-panel{padding:26px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow)}
.page-panel h2{margin:0 0 14px;font-size:20px;line-height:1.5}
.page-panel p{color:var(--text-soft)}
.collection-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.page-empty{display:grid;grid-template-columns:160px minmax(0,1fr);align-items:center;gap:32px;padding:40px}
.empty-art{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;aspect-ratio:1;border:1px solid var(--line-hi);border-radius:12px;background:var(--surface-hi);color:var(--accent)}
.empty-art .icon{width:46px;height:46px}
.empty-art span{font:11px var(--mono);letter-spacing:.07em}
.page-empty h2{margin:10px 0 12px;font-size:25px;line-height:1.5}
.page-empty p{margin:0 0 20px;line-height:1.9}
.page-empty .tag{display:inline-block}
.page-button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:43px;padding:10px 17px;border:1px solid var(--line-hi);border-radius:8px;background:var(--surface-hi);color:var(--accent);font-size:13px;font-weight:600;transition:background .2s,border-color .2s}
.page-button:hover{background:var(--surface-deep);border-color:var(--accent)}
.page-button .icon{width:17px;height:17px}
.review-principles{margin-top:28px}
.review-principles>h2{margin:0 0 16px;font-size:17px}
.principles-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.principle{padding:22px;border:1px solid var(--line);border-radius:12px;background:var(--surface-hi)}
.principle-number{color:var(--accent);font:12px var(--mono)}
.principle h3{margin:12px 0 9px;font-size:15px}
.principle p{margin:0;color:var(--text-soft);font-size:13px;line-height:1.9}
.notes-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-bottom:24px}
.collection-main .note-filters{margin:0;flex-wrap:wrap}
.collection-main .note-filters button{min-height:38px;padding:8px 12px;border-radius:7px;font-size:12px}
:root[data-theme="dark"] .collection-main .note-filters button.is-active{background:var(--surface-hi);box-shadow:inset 0 0 0 1px var(--line-hi)}
.notes-search-wrap{position:relative;display:flex;align-items:center;flex:0 1 275px;min-width:0}
.notes-search-wrap>.icon{position:absolute;left:13px;color:var(--muted);width:17px;height:17px;pointer-events:none}
.notes-search-wrap input{width:100%;min-height:42px;padding:10px 14px 10px 39px;border:1px solid var(--line-hi);border-radius:8px;background:var(--surface);color:var(--text);font-size:13px}
.notes-search-wrap input::placeholder{color:var(--muted)}
.collection-count{margin:0 0 15px;color:var(--muted);font:11px var(--mono)}
.collection-notes{display:grid;gap:15px}
.collection-note{display:grid;grid-template-columns:116px minmax(0,1fr) 28px;align-items:center;gap:25px;padding:24px;border:1px solid var(--line);border-radius:13px;background:var(--surface);box-shadow:var(--shadow);transition:transform .2s,border-color .2s}
.collection-note:hover{transform:translateY(-2px);border-color:var(--line-hi)}
.collection-note .note-thumb{width:116px;height:116px;border-radius:9px}
.collection-note .note-thumb img{width:75px;height:auto}
.collection-note .note-thumb svg{width:100px;height:80px}
.collection-note .note-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:10px;font-size:11px;color:var(--muted)}
.collection-note h2{margin:0 0 10px;font-size:20px;line-height:1.6;letter-spacing:-.02em}
.collection-note p{margin:0;color:var(--text-soft);font-size:13px;line-height:1.9}
.note-read{display:inline-flex;align-items:center;gap:7px;margin-top:15px;color:var(--accent);font-size:12px;font-weight:600}
.collection-note>.icon{color:var(--accent)}
.collection-main .filter-empty{padding:44px 24px;border:1px dashed var(--line-hi);border-radius:12px;background:var(--surface)}
.collection-main .filter-empty h2{margin:0 0 12px;color:var(--text);font-size:22px;line-height:1.5}
.collection-main .filter-empty p{max-width:680px;margin:0 0 22px;color:var(--text-soft);font-size:13px;line-height:1.9}
.page-note{margin-top:24px;color:var(--muted);font-size:12px;line-height:1.8}
.collection-page .site-footer{margin-top:auto}
@media(min-width:1450px){.collection-main{padding-top:55px}}
@media(max-width:1024px){.collection-main{padding:30px 24px 48px}.page-empty{padding:28px;grid-template-columns:125px minmax(0,1fr);gap:24px}.principles-grid{gap:12px}.principle{padding:18px}.collection-note{grid-template-columns:96px minmax(0,1fr) 20px;gap:19px}.collection-note .note-thumb{width:96px;height:105px}}
@media(max-width:760px){.collection-main{padding:25px 16px 40px}.collection-page .topbar{gap:10px}.collection-page .topbar-right{gap:8px}.page-heading{margin-bottom:24px;padding-bottom:24px}.page-intro{font-size:14px}.page-panel{padding:22px}.page-empty{grid-template-columns:90px minmax(0,1fr);gap:20px}.empty-art .icon{width:32px;height:32px}.empty-art span{font-size:8px}.page-empty h2{font-size:21px}.page-empty p{font-size:13px}.principles-grid{grid-template-columns:1fr}.principle{padding:20px}.principle-number{float:right}.principle h3{margin-top:0}.collection-grid{grid-template-columns:1fr}.notes-toolbar{align-items:stretch}.notes-search-wrap{flex-basis:100%;order:-1}.collection-note{padding:20px;grid-template-columns:76px minmax(0,1fr);gap:16px}.collection-note>.icon{display:none}.collection-note .note-thumb{width:76px;height:92px}.collection-note .note-thumb img{width:58px}.collection-note .note-thumb svg{width:75px}.collection-note h2{font-size:17px}.collection-note p{font-size:12px}.collection-note .note-meta{gap:7px;font-size:10px}}
@media(max-width:430px){.page-empty{grid-template-columns:1fr}.empty-art{width:85px;gap:10px}.collection-note{grid-template-columns:1fr;gap:15px}.collection-note .note-thumb{display:none}.collection-note h2{font-size:18px}.collection-note p{font-size:13px}.page-breadcrumb{gap:7px}.collection-page .topbar-right .window-dots{display:none}}
@media(prefers-reduced-motion:reduce){.collection-note{transition:none}.collection-note:hover{transform:none}}