/* Hallmark · pre-emit critique: P5 H4 E4 S5 R5 V4
 * BT Atölyesi: sitenin "Atlas" kâğıdı üzerinde koyu bir ışıklı negatoskop bandı. Görüntü odakta; metin atlas düzeninde.
 * Tokenlar site.css'ten; koyu bant kendi tokenlarını tanımlar. */
:root{--lb:#141110;--lb-2:#1E1A19;--lb-line:#3A3332;--lb-ink:#EFE9E7;--lb-ink-2:#B9B0AD;--lb-acc:#F08A86;--spot:#F4D35E}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* başlık */
.bt-topic{padding-bottom:80px}
.bt-head{padding-top:44px;padding-bottom:28px;display:grid;gap:10px}
.bt-head .crumbs ol{margin-bottom:14px}
.bt-head h1{font-size:clamp(34px,5vw,54px);line-height:1.05;letter-spacing:-.02em;overflow-wrap:anywhere;min-width:0;max-width:22ch}
.bt-head .kick span{color:var(--ink-3);font-weight:500}
.bt-en{color:var(--ink-3);font-size:16px}
.bt-draft{border-left:3px solid var(--accent);padding:2px 0 2px 14px;color:var(--ink-2);font-size:15px}

/* negatoskop bandı */
.bv{background:var(--lb);color:var(--lb-ink);border-block:2px solid var(--ink)}
.bv-in{max-width:var(--wrap);margin:0 auto;display:grid;gap:0}
@media (min-width:960px){.bv-in{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);padding-inline:40px;gap:32px;padding-block:28px}}
.bv-stage{margin:0;min-width:0;display:grid;gap:8px}
.bv-img{position:relative;background:#000;max-height:78vh;margin-inline:auto;width:100%}
.bv-img img{width:100%;height:100%;object-fit:contain}
.bv-spot{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.bv-dim{fill:rgb(8 6 6 / .58);transition:opacity .25s var(--ease-out)}
.bv-ring{fill:none;stroke:var(--spot);stroke-width:3;vector-effect:non-scaling-stroke}
.bv-lab{fill:var(--spot);font:700 15px var(--f-b);paint-order:stroke;stroke:#000;stroke-width:4px;stroke-linejoin:round}
.bv-spot.off .bv-dim{opacity:0}
.bv-bar{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center;justify-content:space-between;padding:4px 20px 0;font-size:14px;color:var(--lb-ink-2);min-height:30px}
@media (min-width:960px){.bv-bar{padding-inline:0}}
.bv-tog{display:inline-flex;gap:8px;align-items:center;cursor:pointer;color:var(--lb-ink)}
.bv-tog input{accent-color:var(--lb-acc);width:18px;height:18px;margin:0}
.bv-side{min-width:0;display:grid;gap:12px;align-content:start;padding:18px 20px 22px}
@media (min-width:960px){.bv-side{padding:0}}
.bv-count{font:600 14px/1.2 var(--f-b);color:var(--lb-ink-2)}
.bv-dots{display:flex;gap:5px}
.bv-dots span{flex:1;height:4px;background:var(--lb-line);transition:background-color .2s var(--ease-out)}
.bv-dots span.on{background:var(--lb-acc)}
.bv-steps{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.bv-steps button{all:unset;box-sizing:border-box;display:grid;gap:4px;width:100%;padding:10px 12px 10px 14px;border-left:3px solid var(--lb-line);cursor:pointer;color:var(--lb-ink-2)}
.bv-steps button:hover{background:var(--lb-2);color:var(--lb-ink)}
.bv-steps button:focus-visible{outline:2px solid var(--lb-acc);outline-offset:-2px}
.bv-steps b{font:600 16px/1.35 var(--f-b);color:var(--lb-ink)}
.bv-steps span{font-size:15.5px;line-height:1.55}
.bv-steps em{font-style:normal;font-size:13.5px;color:var(--lb-ink-2);opacity:.8}
.bv-steps button[aria-pressed="true"]{border-left-color:var(--lb-acc);background:var(--lb-2);color:var(--lb-ink)}
.js .bv-steps button:not([aria-pressed="true"]) span,.js .bv-steps button:not([aria-pressed="true"]) em{display:none}
.bv-nav{display:none;gap:10px;margin-top:4px}
.js .bv-nav{display:flex}
.bv-nav button{min-height:44px;padding:0 18px;border-radius:var(--r);font:600 15px/1 var(--f-b);cursor:pointer;border:1px solid var(--lb-line);background:transparent;color:var(--lb-ink)}
.bv-nav button:hover{border-color:var(--lb-ink-2)}
.bv-nav .bv-next{background:var(--lb-acc);border-color:var(--lb-acc);color:#1A1110}
.bv-nav .bv-next:hover{background:#F7A29F;border-color:#F7A29F}
.bv-nav button:active{transform:translateY(1px)}
.bv-nav button:disabled{opacity:.4;cursor:default}
.bv-credit{max-width:var(--wrap);margin:0 auto;padding:12px 20px 18px;font-size:13px;line-height:1.5;color:var(--lb-ink-2);border-top:1px solid var(--lb-line);overflow-wrap:anywhere}
@media (min-width:960px){.bv-credit{padding-inline:40px}}
.bv-credit a{color:var(--lb-ink)}

/* belge düzeni */
.bt-doc{display:grid;gap:28px;padding-top:44px}
@media (min-width:1080px){.bt-doc{grid-template-columns:200px minmax(0,72ch);gap:56px}}
.bt-doc article{display:grid;gap:18px;min-width:0}
.bt-doc h2{font-size:25px;margin-top:22px;padding-top:18px;border-top:1px solid var(--rule)}
.bt-doc .lead{font:400 clamp(19px,2.2vw,22px)/1.55 var(--f-d);color:var(--ink-2)}
.bt-toc{display:none}
@media (min-width:1080px){.bt-toc{display:block;position:sticky;top:96px;align-self:start}}
.bt-toc ol{list-style:none;margin:0;padding:0;border-top:2px solid var(--ink)}
.bt-toc a{display:block;padding:8px 0;border-bottom:1px solid var(--line);text-decoration:none;font-size:15px;color:var(--ink-2)}
.bt-toc a:hover{color:var(--accent)}
.bt-list{margin:0;padding-left:20px;display:grid;gap:8px}
.bt-list li::marker,.bt-read li::marker{color:var(--accent)}
.bt-read{margin:0;padding-left:22px;display:grid;gap:10px}
.bt-ph dt small{font:600 12.5px/1 var(--f-b);color:var(--accent);margin-left:6px;letter-spacing:.01em}
.bt-dd dt{font-size:17px}
.bt-rel{list-style:none;padding:0!important;display:flex!important;flex-wrap:wrap;gap:8px 22px!important}
.bt-rel a{font:500 17px/1.3 var(--f-d)}
.bt-refs a{font:500 16px/1.35 var(--f-b);overflow-wrap:anywhere}

/* normal BT kıyası */
.bn{display:grid;gap:12px}
.bn-box{background:var(--lb);color:var(--lb-ink);border:1px solid var(--ink);min-height:120px;display:grid;place-items:center;padding:18px}
.bn-load{background:var(--lb-acc);color:#1A1110;white-space:normal;flex-wrap:wrap;justify-content:center;min-height:52px;text-align:center}
.bn-load small{font:500 13.5px/1.2 var(--f-b);opacity:.8}
.bn-load:hover{background:#F7A29F;color:#1A1110}
.bn-load[disabled]{opacity:.7;cursor:progress}
.bn-v{width:100%;display:grid;gap:10px}
.bn-c{position:relative;background:#000}
.bn-c canvas{display:block;max-width:100%;max-height:72vh;width:auto;height:auto;margin:0 auto;image-rendering:auto;touch-action:pan-y}
.bn-c .bn-lv{position:absolute;right:10px;top:8px;font:600 13px/1 var(--f-b);background:rgb(0 0 0 / .6);padding:3px 6px}
.bn-ctl{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;font-size:14px}
.bn-ctl label{display:flex;gap:8px;align-items:center}
.bn-ctl input[type=range]{accent-color:var(--lb-acc);flex:1;min-width:160px}
.bn-ctl .bn-sl{flex:1 1 260px}
.bn-ctl output{min-width:70px;font-variant-numeric:tabular-nums}
.bn-w{display:flex}
.bn-w button{min-height:36px;padding:0 12px;border:1px solid var(--lb-line);margin-left:-1px;background:transparent;color:var(--lb-ink);font:600 13.5px/1 var(--f-b);cursor:pointer;white-space:nowrap}
.bn-w button[aria-pressed="true"]{background:var(--lb-ink);color:var(--lb)}
.bn-ctl input[type=checkbox]{accent-color:var(--lb-acc);width:18px;height:18px;margin:0}
.bn-leg{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:13px;color:var(--lb-ink-2)}
.bn-leg i{display:inline-block;width:11px;height:11px;border:2px solid;margin-right:5px;vertical-align:-1px}
.bn-err{color:var(--lb-acc)}

/* quiz */
.bq{margin:0;padding-left:22px;display:grid;gap:22px}
.bq-q{display:grid;gap:10px}
.bq-t{font-weight:600}
.bq-o{list-style:none;margin:0;padding:0!important;display:grid;gap:6px!important}
.bq-o button{all:unset;box-sizing:border-box;display:block;width:100%;padding:11px 14px;border:1px solid var(--rule);border-radius:var(--r);cursor:pointer;line-height:1.4}
.bq-o button:hover{border-color:var(--ink)}
.bq-o button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.bq-o button[data-r="ok"]{border-color:#2F7D4F;background:color-mix(in oklab,#2F7D4F 10%,transparent)}
.bq-o button[data-r="no"]{border-color:var(--accent);background:color-mix(in oklab,var(--accent) 8%,transparent)}
.bq-o button[data-r="ok"]::after{content:" — doğru";font-weight:600;color:#2F7D4F}
.bq-o button[data-r="no"]::after{content:" — yanlış";font-weight:600;color:var(--accent)}
@media (prefers-color-scheme:dark){.bq-o button[data-r="ok"]{border-color:#6FC08F}.bq-o button[data-r="ok"]::after{color:#6FC08F}}
.bq-x summary{cursor:pointer;color:var(--ink-3);font-size:15px}
.bq-x p{margin-top:6px;color:var(--ink-2)}

/* birim kartları */
.bt-cards{list-style:none;padding:0!important;margin:8px 0 0;display:grid!important;grid-template-columns:repeat(auto-fill,minmax(min(100%,240px),1fr));gap:28px 24px!important}
.bt-cards a{display:grid;gap:6px;text-decoration:none;align-content:start}
.bt-cards img,.bt-noimg{width:100%;aspect-ratio:4/3;object-fit:cover;background:#0E0B0B;border:1px solid var(--ink)}
.bt-noimg{display:block;background:repeating-linear-gradient(135deg,var(--tint) 0 8px,var(--paper) 8px 16px);border-color:var(--rule)}
.bt-cards b{font:500 19px/1.25 var(--f-d);margin-top:4px}
.bt-cards a:hover b{color:var(--accent)}
.bt-cards span{font-size:14.5px;color:var(--ink-3);line-height:1.45}

/* arama */
.bt-search{display:grid;gap:8px;margin-top:6px;position:relative}
.bt-search label{font:600 14px/1.2 var(--f-b);color:var(--ink-3)}
.bt-search input{font:400 18px/1.3 var(--f-b);padding:13px 14px;border:2px solid var(--ink);border-radius:var(--r);background:var(--paper);color:var(--ink);width:100%}
.bt-search input:focus{outline:none;border-color:var(--accent)}
.bt-hits{display:grid}
.bt-hits a{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 14px;padding:10px 0;border-bottom:1px solid var(--line);text-decoration:none}
.bt-hits a b{font:500 18px/1.3 var(--f-d)}
.bt-hits a:hover b{color:var(--accent)}
.bt-hits a span{font-size:14px;color:var(--ink-3);text-align:right}
.bt-hits a i{grid-column:1/-1;font-style:normal;font-size:14px;color:var(--ink-3)}
.bt-hits p{padding:10px 0;color:var(--ink-3)}
@media (max-width:560px){.bt-hits a{grid-template-columns:minmax(0,1fr)}.bt-hits a span{text-align:left}}