/* Mindscape — simple, white, sky-blue accent */
:root{
  --bg:#fff;--text:#111;--muted:#666;--line:#e5e7eb;--soft:#eef8fd;
  --accent:#9ED8F5;--accent-dark:#6cc0ee;--radius:8px;
  --font:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic UI","Yu Gothic",Meiryo,system-ui,sans-serif;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.8;letter-spacing:.02em;
  min-height:100vh;display:flex;flex-direction:column}
a{color:var(--text);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:3px}
a:hover{text-decoration-color:var(--accent-dark)}
a:focus-visible,.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
img{max-width:100%;display:block}
.container{width:min(1040px,90%);margin:0 auto}
.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;background:#fff;color:#111;border:1px solid var(--line);padding:.4rem .8rem;z-index:10}
/* header */
.site-header{border-bottom:1px solid var(--line);background:#fff}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1.1rem 0;flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:.5rem;color:var(--text);font-weight:700;font-size:1.25rem;letter-spacing:.04em}
.brand,.brand:hover{text-decoration:none}
.brand small{color:var(--muted);font-weight:400;font-size:.75rem}
.nav{display:flex;gap:1.4rem;flex-wrap:wrap}
.nav a{color:var(--text);font-size:.92rem;padding:.2rem 0;border-bottom:2px solid transparent}
.nav a{text-decoration:none}
.nav a:hover{border-bottom-color:var(--accent)}
.nav a[aria-current="page"]{border-bottom-color:var(--accent)}
main{flex:1}
/* sections */
section{padding:3rem 0}
.hero{padding:6rem 0 4rem;text-align:center}
.hero h1{font-size:clamp(2.4rem,6vw,3.6rem);font-weight:700;letter-spacing:.06em;margin:0 0 1rem}
.hero h1::after{content:"";display:block;width:56px;height:3px;background:var(--accent);margin:1rem auto 0}
.hero p{margin:.3rem auto;max-width:36em;color:var(--muted)}
.hero .lead{color:var(--text);font-size:1.1rem}
.btns{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap;margin-top:2rem}
.btn{display:inline-block;padding:.65rem 1.4rem;border-radius:var(--radius);border:1px solid var(--line);color:var(--text);background:#fff}
.btn{text-decoration:none}
.btn:hover{text-decoration:none;border-color:var(--accent-dark);background:var(--soft)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--text)}
.btn.primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:var(--text)}
h2{font-weight:700;font-size:1.35rem;margin:0 0 1.4rem;padding-bottom:.6rem;border-bottom:1px solid var(--line)}
h3{font-weight:700;font-size:1.05rem;margin:1.8rem 0 .6rem}
.page-head{padding:4rem 0 1rem}
.page-head h1{font-weight:700;margin:0 0 .5rem;font-size:clamp(1.7rem,4vw,2.2rem)}
.page-head p{color:var(--muted);margin:0}
.concept{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.2rem}
.card,.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.panel{padding:1.4rem 1.6rem}
.concept .panel h3{margin-top:0}
.concept .panel p{margin:0;color:var(--muted)}
.prose{max-width:46em}
.prose h2{margin-top:2.6rem}
.prose li{margin:.3rem 0}
.notice{border-left:3px solid var(--accent);padding:.8rem 1.1rem;background:var(--soft);margin:1.2rem 0}
/* works grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.5rem}
.card{overflow:hidden;display:flex;flex-direction:column}
.card:hover{border-color:var(--accent)}
/* 透過PNGが映える、ごく薄いグレーの台紙 */
.card .thumb{aspect-ratio:4/3;background:#f4fafe;position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.card .thumb img{position:absolute;top:1.2rem;left:1.2rem;width:calc(100% - 2.4rem);height:calc(100% - 2.4rem);object-fit:contain}
.card .body{padding:1rem 1.1rem 1.2rem;display:flex;flex-direction:column;gap:.5rem;flex:1}
.card h3{margin:0;font-size:1rem}
.card p{margin:0;color:var(--muted);font-size:.9rem}
.badge{position:absolute;top:.6rem;left:.6rem;font-size:.72rem;padding:.1rem .55rem;border-radius:4px;background:#fff;border:1px solid var(--line);color:var(--text)}
.tags{display:flex;flex-wrap:wrap;gap:.35rem;list-style:none;padding:0;margin:0}
.tags li{font-size:.75rem;color:var(--muted);border:1px solid var(--line);padding:0 .5rem;border-radius:4px}
.meta{font-size:.8rem;color:var(--muted)}
.dl{margin-top:auto;padding-top:.4rem;font-size:.9rem;display:flex;gap:.5rem;flex-wrap:wrap}
.btn.small{padding:.4rem .9rem;font-size:.85rem;font-family:inherit;line-height:1.6;cursor:pointer}
button.btn:disabled{opacity:.6;cursor:progress}
.card .copy-msg{font-size:.8rem;min-height:0}
.card .copy-msg:empty{display:none}
.card .copy-msg.ok{color:var(--text)}
.card .copy-msg.ng{color:var(--text)}
.dl .disabled{color:var(--muted);cursor:not-allowed}
.license{font-size:.8rem;color:var(--muted);border-top:1px solid var(--line);padding-top:.5rem}
.status{color:var(--muted);padding:1rem 0}
/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:3rem;padding:2rem 0;color:var(--muted);font-size:.85rem}
.site-footer .container{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.site-footer nav a{color:var(--muted);margin-right:1.2rem}
.site-footer nav a{text-decoration:none}
.site-footer nav a:hover{color:var(--text);text-decoration:underline;text-decoration-color:var(--accent)}
@media (max-width:600px){.hero{padding:4rem 0 3rem}.nav{gap:1rem}}
/* filters & search（一覧ページ） */
[hidden]{display:none!important}
:root{--accent-pale:#9ED8F5;--accent-pale-soft:#eaf6fd}
.filters{border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem 1.2rem;margin:0 0 1.2rem;background:#fff}
.filters form{display:flex;flex-direction:column;gap:.9rem}
.filter-label{display:block;font-size:.85rem;font-weight:700;color:var(--text);margin:0 0 .4rem;padding:0}
.filter-label small{font-weight:400;color:var(--muted)}
.filter-group{border:0;margin:0;padding:0;min-width:0}
.search-box{display:flex;gap:.5rem}
.search-box input{flex:1;min-width:0;font:inherit;font-size:1rem;color:var(--text);background:#fff;border:1px solid #cfd6dd;border-radius:var(--radius);padding:.5rem .8rem}
.search-box input:focus{outline:2px solid var(--accent-pale);outline-offset:1px;border-color:var(--accent)}
.search-box .btn{white-space:nowrap}
button.btn[data-clear]:disabled{opacity:.45;cursor:default}
.chips{display:flex;flex-wrap:wrap;gap:.45rem}
.chip{position:relative;display:inline-flex;cursor:pointer}
.chip input{position:absolute;opacity:0;width:1px;height:1px;margin:0;pointer-events:none}
.chip span{display:inline-block;font-size:.85rem;line-height:1.5;padding:.32rem .85rem;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--text);transition:background-color .15s,border-color .15s}
.chip:hover span{border-color:var(--accent-pale)}
.chip input:checked+span{background:var(--accent-pale);border-color:var(--accent-pale);color:#111;font-weight:700}
.chip input[type=checkbox]:checked+span::before{content:"✓ "}
.chip input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}
.result-count{font-size:.9rem;color:var(--muted);margin:0 0 1rem}
.empty{text-align:center;padding:2.5rem 1rem;border:1px dashed var(--line);border-radius:var(--radius);color:var(--muted);grid-column:1/-1}
.empty p{margin:.2rem 0}
.empty .empty-title{color:var(--text);font-weight:700;font-size:1.05rem}
.empty .btn{margin-top:.9rem}
.tags.themes li{background:var(--accent-pale-soft);border-color:var(--accent-pale);color:#111}
@media (max-width:600px){.filters{padding:.9rem}.chip span{font-size:.82rem;padding:.3rem .75rem}}
@media (prefers-reduced-motion:reduce){.chip span{transition:none}}
.list-section{padding-top:1.5rem}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}