/* ==========================================================================
   FORMULO · hoca katmanı (formulo/assets/formulo-hoca.css), 08.11.2026
   Sekmeler (fo-sekmeler), "Acadia anlatsın" tahtası (fs-), soru havuzu (fq-),
   Acadia'ya sor (fa-). Renkler formulo.css jetonlarından.
   ========================================================================== */
/* ---------- sekmeler ---------- */
.fo-orta{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;min-width:0}
.fo-sekmeler{position:sticky;top:64px;z-index:6;display:flex;gap:4px;padding:4px;background:rgba(250,247,240,.96);border:1px solid var(--kenar);border-radius:8px;backdrop-filter:blur(6px);overflow-x:auto;scrollbar-width:none}
.fo-sekmeler button{flex:1 0 auto;min-height:40px;padding:0 14px;border:0;border-radius:5px;background:transparent;color:var(--soluk);font:600 14.5px 'Instrument Sans',sans-serif;cursor:pointer;white-space:nowrap;transition:background .2s,color .2s}
.fo-sekmeler button:hover{color:var(--murekkep)}
.fo-sekmeler button[aria-selected="true"]{background:var(--murekkep);color:var(--zit)}
.fo-panel{min-width:0}
.fo-konular.fo-soluk{opacity:.45}
.fo-btn-acd{background:var(--fosfor);border-color:var(--sari);color:var(--fosfor-y)}
.fo-btn-acd::before{content:"";width:16px;height:6px;margin-right:8px;border-radius:1px;background:repeating-linear-gradient(90deg,var(--murekkep) 0 1px,transparent 1px 4px),rgba(30,42,68,.08);box-shadow:inset 0 0 0 1px var(--murekkep)}

/* ---------- tahta (fs-) ---------- */
body.fs-acik{overflow:hidden}
.fs-ort{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:18px;background:rgba(30,42,68,.55);animation:fsAc .25s ease}
@keyframes fsAc{from{opacity:0}}
.fs-tahta{position:relative;width:min(1180px,100%);max-height:calc(100vh - 36px);display:grid;grid-template-rows:auto minmax(0,1fr) auto;overflow:hidden;border-radius:10px;border:1px solid var(--kenar);border-top:4px solid var(--c);color:var(--murekkep);
  background-color:#123a2e;background-image:radial-gradient(900px 500px at 30% 0%,rgba(255,255,255,.07),transparent 70%),linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:auto,24px 24px,24px 24px;box-shadow:0 30px 80px rgba(0,0,0,.5),inset 0 0 0 10px rgba(80,52,30,.55),inset 0 0 0 12px rgba(0,0,0,.25)}
.fs-bas{display:flex;align-items:baseline;gap:12px;padding:18px 22px 6px}
.fs-eyb{font:500 11.5px 'JetBrains Mono',monospace;letter-spacing:.06em;text-transform:uppercase;color:var(--c)}
.fs-bas h2{margin:0;font:600 26px/1.15 Caveat,cursive;color:var(--murekkep);flex:1;min-width:0}
.fs-x{width:40px;height:40px;flex:none;border-radius:50%;border:1px solid rgba(234,244,255,.3);background:transparent;color:var(--murekkep);font-size:24px;line-height:1;cursor:pointer}
.fs-x:hover{background:rgba(234,244,255,.1)}
.fs-govde{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);grid-template-areas:"yazi sahne" "yazi olcu" "acadia acadia";gap:10px 26px;padding:6px 22px 10px;overflow:auto;min-height:0}
.fs-sahnesiz .fs-govde{grid-template-columns:minmax(0,1fr);grid-template-areas:"yazi" "olcu" "acadia"}
.fs-yazi{grid-area:yazi;min-width:0;align-self:center}
.fs-f{position:relative;font-size:clamp(26px,3.4vw,40px);padding:22px 8px 26px;color:#F4FAF5;text-shadow:0 0 1px rgba(255,255,255,.4)}
.fs-f .fv{border-bottom-color:rgba(255,255,255,.25);cursor:default;transition:color .35s,background .35s,opacity .35s}
.fs-f.fs-kur .fv{opacity:.35}
.fs-f.fs-kur .fv.fs-gecti,.fs-f.fs-kur .fv.fs-on,.fs-f.fs-tam .fv{opacity:1}
.fs-f .fv.fs-gecti{color:var(--rc);border-bottom-color:var(--rc)}
.fs-f .fv.fs-on{color:var(--zit);background:var(--rc);border-bottom-color:transparent;box-shadow:0 0 0 3px var(--rc);border-radius:3px}
.fs-f-ornek{font-size:clamp(22px,2.8vw,32px);padding-top:6px;border-top:1px dashed rgba(234,244,255,.25);animation:fsYaz .8s cubic-bezier(.5,0,.2,1)}
@keyframes fsYaz{from{clip-path:inset(-20px 100% -20px 0)}to{clip-path:inset(-20px 0 -20px 0)}}
.fs-f .fs-yerine{border-bottom:0;padding:0 .08em}
.fs-d{color:var(--sari);font-family:'JetBrains Mono',monospace;font-style:normal;font-size:.62em}
.fs-esit b{color:var(--sari);font-weight:400}
.fs-esit{font-family:'JetBrains Mono',monospace;font-size:.7em;color:var(--soluk)}
/* cetvel: terimin altına kayar */
.fs-cetvel{position:absolute;left:0;top:100%;height:14px;width:100%;opacity:0;pointer-events:none;border-radius:2px;
  background:repeating-linear-gradient(90deg,rgba(11,47,89,.75) 0 1px,transparent 1px 6px) top/100% 6px no-repeat,repeating-linear-gradient(90deg,rgba(11,47,89,.75) 0 1px,transparent 1px 30px) top/100% 9px no-repeat,#F2D58A;
  box-shadow:0 3px 0 rgba(0,0,0,.25),0 0 0 2px var(--k,#FFD86B);transition:left .55s cubic-bezier(.3,.9,.3,1),width .55s cubic-bezier(.3,.9,.3,1),top .4s,opacity .3s}
.fs-cetvel-2{position:absolute;z-index:2}
.fs-tablo{display:grid;gap:6px;margin-top:6px}
.fs-tr{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:14px;padding:4px 10px;border-radius:6px;transition:background .3s}
.fs-tr .fs-f{font-size:22px;padding:6px 0}
.fs-tr>span:last-child{font:600 20px Caveat,cursive;color:var(--soluk)}
.fs-tr.fs-on{background:rgba(255,216,107,.14)}
.fs-tr.fs-on>span:last-child{color:var(--sari)}
/* sahne */
.fs-sahne{grid-area:sahne;min-width:0;align-self:end}
.fs-sahne svg{display:block;width:100%;max-height:300px}
.fs-sahne text{font:15px var(--math);fill:var(--k,#BFD6CC)}
.fs-sahne .fs-koyu{fill:#123a2e;font-weight:700}
.fs-sahne [data-r]{transition:filter .3s}
.fs-sahne .fs-on{filter:drop-shadow(0 0 6px var(--k))}
.fs-cizgi,.fs-ar,.fs-ok,.fs-zemin{fill:none;stroke:var(--k,#EAF4FF);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.fs-zemin{stroke:rgba(234,244,255,.45);stroke-width:1.6}
.fs-ar{stroke-width:1.6;stroke:var(--k,#BFD6CC)}
.fs-ok{stroke-width:2.4}
.fs-on .fs-cizgi,.fs-on .fs-ar,.fs-on .fs-ok,.fs-cizgi.fs-on,.fs-ar.fs-on{stroke-width:3.2}
.fs-kesik{stroke-dasharray:5 6}
.fs-top{fill:var(--k,#EAF4FF);stroke:none}
.fs-top2{fill:var(--k,#FF9F5A)}
.fs-alan{fill:rgba(255,216,107,.18);stroke:none}
.fs-dik{fill:rgba(127,227,255,.12);stroke:var(--k,rgba(127,227,255,.5));stroke-width:1}
.fs-nokta{fill:var(--k,#BFD6CC)}
/* ölçü cetveli */
.fs-olcu{grid-area:olcu;display:grid;gap:7px;align-self:start;padding:10px 12px;border:1px dashed rgba(234,244,255,.22);border-radius:6px}
.fs-olcu-s{display:grid;grid-template-columns:52px minmax(0,1fr) auto;align-items:center;gap:10px;font-size:13px;transition:transform .3s}
.fs-olcu-s b{font:italic 18px var(--math);font-weight:400;color:var(--k,var(--murekkep));white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fs-olcu-ray{position:relative;height:12px;border-radius:2px;background:repeating-linear-gradient(90deg,rgba(234,244,255,.35) 0 1px,transparent 1px 10%) 0 0/100% 6px no-repeat,rgba(234,244,255,.07)}
.fs-olcu-ray i{position:absolute;left:0;top:0;bottom:0;border-radius:2px;background:var(--k,rgba(234,244,255,.45));transition:background .3s}
.fs-olcu-s em{font:500 12px 'JetBrains Mono',monospace;font-style:normal;color:var(--k,var(--soluk))}
.fs-olcu-s.fs-on{transform:translateX(4px)}
.fs-sahnesiz .fs-olcu{max-width:560px}
/* Acadia + balon */
.fs-acadia{grid-area:acadia;display:flex;align-items:flex-end;gap:14px;min-height:104px}
.fs-acd{position:relative;flex:none;width:120px;height:124px}
.fs-acd .acd{position:absolute;left:0;bottom:0}
.fs-elcetvel{position:absolute;right:-26px;bottom:42px;width:64px;transform:rotate(-28deg);transform-origin:left center}
.fs-elcetvel rect{fill:#F2D58A;stroke:#0B2F59;stroke-width:1.2}.fs-elcetvel line{stroke:#0B2F59;stroke-width:1}
.fs-balon{position:relative;margin:0 0 18px 18px;padding:12px 16px;max-width:620px;border-radius:14px;background:var(--murekkep);color:var(--zit);font:600 22px/1.25 Caveat,cursive;box-shadow:0 8px 20px rgba(0,0,0,.25)}
.fs-balon::before{content:"";position:absolute;left:-10px;bottom:14px;border:10px solid transparent;border-right-color:var(--murekkep);border-left:0}
.fs-balon.fs-yeni{animation:fsBalon .35s cubic-bezier(.2,.9,.3,1.3)}
@keyframes fsBalon{from{transform:scale(.92) translateY(6px);opacity:.3}}
.fs-oklar{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:3;overflow:visible}
.fs-ok-cizgi{fill:none;stroke-width:2.2;stroke-dasharray:6 6;stroke-linecap:round;animation:fsOk .7s ease both}
@keyframes fsOk{from{stroke-dashoffset:200;opacity:0}}
/* kontroller */
.fs-alt{display:flex;align-items:center;gap:8px;padding:10px 22px 16px;border-top:1px solid rgba(234,244,255,.12)}
.fs-dg{min-width:44px;height:44px;padding:0 12px;border-radius:8px;border:1px solid rgba(234,244,255,.3);background:transparent;color:var(--murekkep);font:600 14px 'JetBrains Mono',monospace;cursor:pointer}
.fs-dg:hover{background:rgba(234,244,255,.1)}
.fs-oyn{background:var(--sari);border-color:var(--sari);color:var(--zit)}
.fs-noktalar{display:flex;flex-wrap:wrap;gap:6px;margin-left:8px;flex:1;min-width:0}
.fs-noktalar button{width:22px;height:22px;padding:0;border-radius:50%;border:2px solid rgba(234,244,255,.35);background:transparent;cursor:pointer;position:relative}
.fs-noktalar button::after{content:"";position:absolute;inset:-10px}
.fs-noktalar button.gecti{background:rgba(234,244,255,.35)}
.fs-noktalar button.on{background:var(--sari);border-color:var(--sari);transform:scale(1.15)}
.fs-say{font:500 12px 'JetBrains Mono',monospace;color:var(--soluk)}
@media (max-width:860px){
  .fs-ort{padding:0;place-items:stretch}
  .fs-tahta{max-height:100vh;height:100%;border-radius:0}
  .fs-govde{grid-template-columns:minmax(0,1fr);grid-template-areas:"yazi" "sahne" "olcu" "acadia";padding:4px 14px 8px;gap:8px}
  .fs-bas{padding:14px 14px 4px}
  .fs-bas h2{font-size:22px}
  .fs-f{padding:16px 4px 22px}
  .fs-sahne svg{max-height:200px}
  .fs-olcu{padding:8px 10px}
  .fs-acadia{min-height:0}
  .fs-acd{width:70px;height:74px}
  .fs-acd .acd{width:70px;height:74px}
  .fs-elcetvel{width:46px;right:-18px;bottom:30px}
  .fs-balon{font-size:19px;margin:0 0 10px 12px;padding:10px 12px}
  .fs-alt{padding:8px 14px 14px;flex-wrap:wrap}
  .fs-noktalar{order:5;flex-basis:100%;margin:4px 0 0}
  .fs-say{margin-left:auto}
}

/* ---------- soru havuzu (fq-) ---------- */
.fq{display:grid;gap:14px}
.fq-ust{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px}
.fq-sev{display:flex;padding:3px;border:1px solid var(--kenar);border-radius:8px}
.fq-sev button{min-height:38px;padding:0 14px;border:0;border-radius:5px;background:transparent;color:var(--soluk);font:600 14px 'Instrument Sans',sans-serif;cursor:pointer}
.fq-sev button[aria-checked="true"]{background:var(--murekkep);color:var(--zit)}
.fq-konu{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--soluk)}
.fq-konu select{min-height:40px;max-width:220px;padding:0 10px;border:1px solid var(--kenar);border-radius:6px;background:var(--zit);color:var(--murekkep);font:500 14px 'Instrument Sans',sans-serif}
.fq-puan{margin-left:auto;font:500 12.5px 'JetBrains Mono',monospace;color:var(--soluk)}
.fq-puan b{color:var(--sari);font-weight:500}
.fq-kart{display:grid;grid-template-columns:84px minmax(0,1fr);gap:16px;padding:18px 20px;background:var(--yuzey);border:1px solid var(--kenar);border-left:3px solid var(--c);border-radius:4px;box-shadow:0 1px 0 var(--kenar)}
.fq-acadia{display:flex;flex-direction:column;align-items:center;gap:6px}
.fq-acd{display:block;width:64px;height:68px}
.fq-balon{margin:0;padding:6px 8px;border-radius:10px;background:var(--kagit);border:1px solid var(--kenar);color:var(--murekkep);font:600 16px/1.1 Caveat,cursive;text-align:center}
.fq-balon.fq-yeni{animation:fsBalon .35s cubic-bezier(.2,.9,.3,1.3)}
.fq-govde{min-width:0}
.fq-etiket{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 8px;font:500 12px 'JetBrains Mono',monospace;color:var(--soluk)}
.fq-sev-e{padding:2px 8px;border-radius:999px;font-weight:500;color:#12261F;background:#B5EBCB}
.fq-sev-e.fq-orta{background:var(--fosfor)}.fq-sev-e.fq-zor{background:var(--tur)}
.fq-not{margin:0 0 8px;font-size:13px;color:var(--soluk)}
.fq-metin{margin:0 0 10px;font-size:17px;line-height:1.55}
.fq-metin b{color:var(--sari);font-weight:600;white-space:nowrap}
.fq-gizli{display:inline-block;min-width:1.4em;text-align:center;border-bottom:2px solid var(--cam);color:var(--cam)!important}
.fq-ver{display:flex;flex-wrap:wrap;gap:4px 16px;margin:0 0 12px;font-size:14.5px;color:var(--soluk)}
.fq-s{font:italic 18px var(--math);color:var(--murekkep)}
.fq-s i,.fq-s b{font-weight:400}
.fq-s sup,.fq-s sub,.fq-ver sup,.fq-ver sub{font-size:.65em;line-height:0}
.fq-form{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.fq-form label{display:flex;align-items:center;gap:8px}
.fq-form input{width:150px;min-height:42px;padding:0 10px;border:1px solid var(--kenar);border-radius:6px;background:var(--zit);color:var(--murekkep);font:500 16px 'JetBrains Mono',monospace}
.fq-form em{font:500 13px 'JetBrains Mono',monospace;font-style:normal;color:var(--soluk)}
.fq-form .fo-btn i{font-style:normal;margin-left:6px;font:500 11px 'JetBrains Mono',monospace;opacity:.7}
.fq-c{margin:10px 0 0;font-weight:600}
.fq-c.fo-ok{color:var(--ok-y)}.fq-c.fo-no{color:var(--tur)}
.fq-ip{margin-top:10px;padding:10px 12px;border:1px dashed var(--cam);border-radius:6px;background:var(--ton);font-size:14.5px}
.fq-ip>b{display:block;font:500 11.5px 'JetBrains Mono',monospace;color:var(--cam);text-transform:uppercase;letter-spacing:.06em}
.fq-ip p{margin:6px 0}
.fq-f{font-size:22px;padding:8px 2px 10px}
.fq-d,.fa-d{color:var(--sari);font-family:'JetBrains Mono',monospace;font-style:normal;font-size:.66em}
.fq-yerine{border-bottom:0;cursor:default}
.fq-cozum{margin:14px 0 0;padding:0;list-style:none;counter-reset:fq;display:grid;gap:10px}
.fq-cozum li{position:relative;padding:10px 12px 10px 44px;border:1px solid var(--kenar);border-radius:6px;background:var(--kagit);counter-increment:fq}
.fq-cozum li::before{content:counter(fq);position:absolute;left:12px;top:10px;width:22px;height:22px;display:grid;place-items:center;border-radius:50%;background:var(--murekkep);color:var(--zit);font:700 12px 'JetBrains Mono',monospace}
.fq-cozum li>b{font:500 12px 'JetBrains Mono',monospace;text-transform:uppercase;letter-spacing:.05em;color:var(--soluk)}
.fq-cozum p{margin:4px 0}
.fq-son b{color:var(--sari);font-size:20px}
.fq-bos{color:var(--soluk)}
/* hata defteri */
.fq-hata{margin-top:28px}
.fq-h2{display:flex;align-items:baseline;gap:10px;margin:0 0 12px;font:700 22px 'Bricolage Grotesque',sans-serif}
.fq-h2 span{font:500 12px 'JetBrains Mono',monospace;color:var(--soluk)}
.fq-hata ul{display:grid;gap:12px;margin:0;padding:0;list-style:none}
.fq-hata li{padding:14px 16px;background:var(--yuzey);border:1px solid var(--kenar);border-left:3px solid var(--c);border-radius:4px;box-shadow:0 1px 0 var(--kenar)}
.fq-hata small{font:500 11.5px 'JetBrains Mono',monospace;color:var(--soluk)}
.fq-hata li>p{margin:6px 0}
.fq-hata li>p b{color:var(--sari);font-weight:600}
.fq-hata-c{font-size:14px;color:var(--soluk)}
.fq-hata li>div{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.fq-hata .fo-btn{text-decoration:none;min-height:38px}

/* ---------- Acadia'ya sor (fa-) ---------- */
.fa{display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:10px;height:min(76vh,760px);min-height:460px;padding:14px;background:var(--yuzey);border:1px solid var(--kenar);border-left:3px solid var(--c);border-radius:4px;box-shadow:0 1px 0 var(--kenar)}
.fa-bant{margin:0;padding:8px 12px;border:1px dashed var(--kenar);border-radius:6px;font-size:12.5px;color:var(--soluk)}
.fa-akis{display:flex;flex-direction:column;gap:12px;overflow-y:auto;padding:4px 2px;scrollbar-width:thin}
.fa-m{display:flex;gap:10px;align-items:flex-start;max-width:100%}
.fa-acd{flex:none;width:44px;height:46px}
.fa-b{min-width:0;padding:10px 14px;border-radius:4px 14px 14px 14px;background:var(--kagit);border:1px solid var(--kenar);font-size:15px}
.fa-b p{margin:4px 0}
.fa-sen{justify-content:flex-end}
.fa-sen .fa-b{border-radius:14px 4px 14px 14px;background:var(--murekkep);color:var(--zit);border-color:var(--murekkep);font-weight:600}
.fa-f{font-size:22px;padding:6px 2px 10px}
.fa-k{font:500 11.5px 'JetBrains Mono',monospace !important;text-transform:uppercase;letter-spacing:.06em;color:var(--soluk);margin-top:10px!important}
.fa-v{margin:4px 0;padding-left:18px}
.fa-v li{margin:2px 0}
.fa-v i{font:italic 17px var(--math)}
.fa-v small{color:var(--soluk);font-family:'JetBrains Mono',monospace}
.fa-not{color:var(--soluk);font-size:14px}
.fa-kaynak{margin:6px 0 0;font-family:var(--mono,ui-monospace,monospace);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--soluk)}   /* 08.11.2026: yapay zekâ yanıtı etiketi */
.fa-son b{color:var(--sari);font-size:21px}
.fa-tablo{display:grid;gap:4px}
.fa-tablo>div{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center}
.fa-tablo .fo-f{font-size:18px;padding:4px 0}
.fa-oneri{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.fa-oneri button{min-height:36px;padding:0 12px;border-radius:999px;border:1px solid var(--cam);background:transparent;color:var(--cam);font:500 13.5px 'Instrument Sans',sans-serif;cursor:pointer;text-align:left}
.fa-oneri button:hover{background:var(--ton)}
.fa-eylem{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.fa-eylem .fo-btn{min-height:36px;font-size:13px;text-decoration:none}
.fa-soru{font-size:16px}
.fa-soru b{color:var(--sari)}
.fa-cevap summary{cursor:pointer;color:var(--cam);font-weight:600;margin-top:6px}
.fa-nokta{display:flex;gap:4px;padding:6px 0}
.fa-nokta i{width:7px;height:7px;border-radius:50%;background:var(--soluk);animation:faNokta 1s infinite}
.fa-nokta i:nth-child(2){animation-delay:.15s}.fa-nokta i:nth-child(3){animation-delay:.3s}
@keyframes faNokta{50%{transform:translateY(-4px);opacity:.4}}
.fa-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.fa-form input[type=text]{flex:1;min-width:0;min-height:44px;padding:0 12px;border:1px solid var(--kenar);border-radius:8px;background:var(--zit);color:var(--murekkep);font:500 15px 'Instrument Sans',sans-serif}
.fa-ip{display:flex;align-items:center;gap:6px;min-height:44px;padding:0 10px;border:1px solid var(--kenar);border-radius:8px;font-size:13px;color:var(--soluk);cursor:pointer;white-space:nowrap}
.fa-ip input{accent-color:var(--sari);width:16px;height:16px}
.fa-ip:has(input:checked){border-color:var(--sari);color:var(--sari)}
@media (max-width:1099px){.fo-sekmeler{top:122px}}
@media (max-width:760px){
  .fq-kart{grid-template-columns:minmax(0,1fr);padding:14px}
  .fq-acadia{flex-direction:row;justify-content:flex-start}
  .fq-acd{width:52px;height:56px}
  .fq-acd .acd{width:52px;height:56px}
  .fq-puan{margin-left:0;flex-basis:100%}
  .fq-form input{width:120px}
  .fq-f,.fa-f{font-size:19px}
  .fa{padding:10px;height:72vh}
  .fa-form{display:grid;grid-template-columns:minmax(0,1fr) auto}
  .fa-ip{grid-column:1/-1;justify-self:start}
}
@media (prefers-reduced-motion:reduce){.fs-cetvel,.fs-ok-cizgi,.fs-f-ornek{transition:none;animation:none}}
.fo-f .fv-yerine{border-bottom:0;cursor:default;background:none;padding:0}
.fv-carp{margin:0 .1em;color:var(--soluk);font-style:normal}
.fs-acd svg.acd,.fq-acd svg.acd,.fa-acd svg.acd{width:100%;height:100%;overflow:visible}
.fs-sahnesiz .fs-govde{align-content:start}
.fs-sahnesiz .fs-acadia{margin-top:8px}

/* ---------- tebeşir dersi v2: yazma, çizme, canlı sahne, ara soru, örnek çözüm ---------- */
.fs-ort{--hiz:1}
.fs-ciz{stroke-dasharray:1 1;stroke-dashoffset:1;animation:fsCiz calc(1.1s / var(--hiz)) cubic-bezier(.4,0,.2,1) forwards}
@keyframes fsCiz{to{stroke-dashoffset:0}}
.fs-f.fs-yaziyor{animation:fsYaz calc(2.2s / var(--hiz)) linear both}
.fs-tebesir{position:absolute;top:50%;left:0;width:26px;height:9px;margin-top:-4px;border-radius:2px;background:linear-gradient(90deg,#fff,#dfe8e3);box-shadow:0 0 6px rgba(255,255,255,.6);transform:rotate(-24deg);opacity:0;pointer-events:none}
.fs-f.fs-yaziyor .fs-tebesir{animation:fsTebesir calc(2.2s / var(--hiz)) linear both}
@keyframes fsTebesir{0%{left:0;opacity:1}10%{transform:rotate(-24deg) translateY(-8px)}30%{transform:rotate(-24deg) translateY(6px)}50%{transform:rotate(-24deg) translateY(-6px)}70%{transform:rotate(-24deg) translateY(8px)}96%{opacity:1}100%{left:100%;opacity:0}}
.fs-iz{fill:none;stroke:rgba(255,216,107,.55);stroke-width:2;stroke-dasharray:3 5}
.fs-elektron{fill:#FFD86B;filter:drop-shadow(0 0 3px #FFD86B)}
.fs-akis{stroke-dasharray:6 6;animation:fsAkis calc(1.6s / var(--hiz)) linear 12}
@keyframes fsAkis{to{stroke-dashoffset:-12}}
.fs-delik{fill:#123a2e;stroke:#EAF4FF;stroke-width:2}
.fs-izgara{stroke:rgba(234,244,255,.28);stroke-width:1}
.fs-yon{stroke:rgba(127,227,255,.55);stroke-width:1.6;stroke-linecap:round}
.fs-venn{fill:rgba(127,227,255,.16);stroke:#EAF4FF;stroke-width:2}
.fs-venn2{fill:rgba(255,159,90,.18)}
.fs-dik-on{fill:rgba(255,216,107,.55);stroke:#FFD86B}
.fs-sahne .fs-not{font:500 12px 'JetBrains Mono',monospace;fill:#FFD86B}
.fs-tahta.fs-canlida .fs-sahne{filter:drop-shadow(0 0 12px rgba(255,216,107,.25))}
/* ölçü cetveli kaydırılabilir */
.fs-olcu-ray input{position:absolute;inset:-10px 0;width:100%;height:32px;margin:0;opacity:0;cursor:ew-resize}
.fs-olcu-ray{cursor:ew-resize}
.fs-olcu-s{cursor:ew-resize}
.fs-olcu-son{display:flex;align-items:baseline;gap:8px;margin:4px 0 0;padding-top:8px;border-top:1px dashed rgba(234,244,255,.2);font:500 12px 'JetBrains Mono',monospace;color:var(--soluk)}
.fs-olcu-son span{flex:1}
.fs-olcu-son b{font:400 22px var(--math);color:var(--sari)}
/* örnek soru defteri */
.fs-defter{display:grid;gap:8px;margin-top:6px}
.fs-defter:empty{display:none}
.fs-satir{padding:8px 12px;border-left:3px solid rgba(234,244,255,.35);font-size:16px;color:#F4FAF5;animation:fsSatir calc(1s / var(--hiz)) cubic-bezier(.5,0,.2,1) both}
@keyframes fsSatir{from{clip-path:inset(0 100% 0 0);opacity:.4}to{clip-path:inset(0 0 0 0)}}
.fs-satir>b{display:block;font:500 11.5px 'JetBrains Mono',monospace;letter-spacing:.06em;text-transform:uppercase;color:var(--c)}
.fs-satir p{margin:4px 0}
.fs-satir .fo-f{font-size:22px;padding:4px 0;color:#F4FAF5}
.fs-satir .fq-son b,.fs-satir b b{color:var(--sari)}
.fs-soru{border-left-color:var(--sari);background:rgba(255,216,107,.07);border-radius:0 6px 6px 0;font:600 21px/1.35 Caveat,cursive}
.fs-soru b b,.fs-soru>div>b{font-family:'Instrument Sans',sans-serif;font-size:15px;color:var(--sari)}
.fs-soru .fo-f{font-size:20px}
.fs-sik{margin:6px 0 0;padding-left:22px;font:16px 'Instrument Sans',sans-serif}
.fs-tahta.fs-ornekte .fs-f[data-fs-f]{font-size:clamp(20px,2.4vw,28px);padding:10px 4px 14px;opacity:.8}
/* ara soru */
.fs-konus{display:grid;gap:8px;min-width:0;flex:1}
.fs-ara{margin:0 0 14px 18px;padding:10px 12px;border:1px dashed var(--sari);border-radius:10px;background:rgba(255,216,107,.06)}
.fs-ara-not{margin:0 0 8px;font:500 12px 'JetBrains Mono',monospace;color:var(--sari)}
.fs-ara-s{display:flex;flex-wrap:wrap;gap:8px}
.fs-ara-s button{display:flex;align-items:center;gap:8px;min-height:42px;padding:0 14px;border-radius:8px;border:1px solid rgba(234,244,255,.35);background:rgba(234,244,255,.06);color:var(--murekkep);font:600 15px 'Instrument Sans',sans-serif;cursor:pointer}
.fs-ara-s button>i,.fq-sik>i{font:500 11px 'JetBrains Mono',monospace;font-style:normal;opacity:.7}
.fs-ara-s button .fo-f{font-size:18px;padding:0}
.fs-ara-s button:hover:not(:disabled){border-color:var(--sari)}
.fs-ara-s .fs-dogru{border-color:#9BF0C0;background:rgba(155,240,192,.15);color:#9BF0C0}
.fs-ara-s .fs-yanlis{border-color:var(--tur);background:rgba(255,159,90,.12);color:var(--tur)}
/* kontroller: hız ve ses */
.fs-ayar{display:flex;align-items:center;gap:8px;margin-left:auto}
.fs-hiz{display:flex;border:1px solid rgba(234,244,255,.3);border-radius:8px;padding:2px}
.fs-hiz button{min-height:38px;padding:0 9px;border:0;border-radius:6px;background:transparent;color:var(--soluk);font:500 12.5px 'JetBrains Mono',monospace;cursor:pointer}
.fs-hiz button[aria-checked="true"]{background:var(--murekkep);color:var(--zit)}
.fs-ses{font-size:17px}
.fs-ses[aria-pressed="false"]{opacity:.6}
.fs-noktalar .fs-n-ara{border-radius:4px;transform:rotate(45deg) scale(.85)}
.fs-noktalar .fs-n-coz,.fs-noktalar .fs-n-ornek{border-style:dashed}
.fs-noktalar .fs-n-ara.on{transform:rotate(45deg) scale(1)}
@media (max-width:860px){
  .fs-ayar{order:6;margin-left:0}
  .fs-ara{margin:0 0 8px 12px}
  .fs-satir .fo-f{font-size:18px}
  .fs-soru{font-size:19px}
}
/* soru havuzu: şıklar ve sayaç */
.fq-sayac{margin:-4px 0 0;font:500 12.5px 'JetBrains Mono',monospace;color:var(--soluk)}
.fq-sayac b{color:var(--sari);font-weight:500}
.fq-siklar{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:8px;margin:0 0 12px}
.fq-sik{display:flex;align-items:center;gap:10px;min-height:48px;padding:6px 12px;text-align:left;border-radius:8px;border:1px solid var(--kenar);background:var(--kagit);color:var(--murekkep);font:500 15px 'Instrument Sans',sans-serif;cursor:pointer;transition:border-color .2s,background .2s}
.fq-sik:hover:not(:disabled){border-color:var(--c)}
.fq-sik .fo-f{font-size:19px;padding:0;overflow:visible}
.fq-sik.fq-dogru{border-color:var(--ok-y);background:rgba(30,122,76,.1)}
.fq-sik.fq-yanlis{border-color:var(--tur);background:rgba(194,82,29,.08)}
.fq-sik:disabled{cursor:default}
.fq-metin .fo-f{display:block;font-size:24px;padding:8px 0}
.fq-ip-ic .fo-f{font-size:20px}
.fq-hata .fo-f{font-size:19px;padding:2px 0}
@media (prefers-reduced-motion:reduce){.fs-ciz,.fs-akis,.fs-satir,.fs-f.fs-yaziyor,.fs-tebesir{animation:none!important;stroke-dashoffset:0}}
.fo-orta>[hidden]{display:none!important}
.fo-kartlar{grid-template-columns:minmax(0,1fr)}
.fo-tablo{grid-template-columns:minmax(0,1fr)}
.fo-tr>.fo-f{min-width:0;flex:1 1 auto}
.fo-tr>span:last-child{flex:0 1 auto}
@media (max-width:760px){.fo-tr{flex-direction:column;align-items:flex-start;gap:0}.fo-tr>span:last-child{text-align:left}}
.fo-tr>.fo-f{display:block;max-width:100%}
.fs-balon .fq-s,.fs-balon .fo-f{color:inherit}.fs-balon .fo-f{font-size:1em;padding:0}

/* ---------- ana sayfa tanıtımı: kısa tahta dersi (ft-) ---------- */
.fo-tanitim{min-width:0}
.ft{display:grid;gap:4px}
.ft-tahta{position:relative;aspect-ratio:16/10;min-height:260px;border-radius:12px;overflow:hidden;color:#EEF5EF;
  background:radial-gradient(120% 90% at 30% 10%,#21483C,#173529 70%);box-shadow:inset 0 0 0 10px #7A5534,inset 0 0 0 12px rgba(0,0,0,.28),0 22px 36px -24px rgba(30,42,68,.55)}
.ft-tahta::after{content:"";position:absolute;left:12%;right:12%;bottom:10px;height:6px;border-radius:3px;background:#8C6440;box-shadow:0 -2px 0 rgba(0,0,0,.2)}
.ft-ic{position:absolute;inset:24px 28px 30px}
.ft-k{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:12px;text-align:center;opacity:0;visibility:hidden;transition:opacity .5s,visibility 0s .5s}
.ft-s0 .ft-k0,.ft-s1 .ft-k1,.ft-s2 .ft-k2,.ft-s3 .ft-k3,.ft-s4 .ft-k4,.ft-s5 .ft-k5{opacity:1;visibility:visible;transition:opacity .5s}
.ft-yazi{margin:0;font:600 clamp(44px,6vw,76px)/1 Caveat,cursive;color:#F4FAF5;text-shadow:0 0 1px rgba(255,255,255,.5)}
.ft-yazi span{color:#FFD86B}
.ft-s0 .ft-yazi,.ft-s5 .ft-yazi{animation:ftYaz 1.4s .2s cubic-bezier(.5,0,.2,1) both}
.ft-alt{margin:0;font:500 13px 'JetBrains Mono',monospace;letter-spacing:.2em;color:#B9CEC4;opacity:0;animation:ftBel .6s 1.4s forwards}
.ft-s0 .ft-alt{animation:ftBel .6s 1.4s forwards}
@keyframes ftYaz{from{clip-path:inset(-20px 100% -20px 0)}to{clip-path:inset(-20px 0 -20px 0)}}
@keyframes ftBel{to{opacity:1}}
.ft-f{font-size:clamp(24px,3vw,36px);padding:0;overflow:visible;color:#F4FAF5}
.ft-f .fv{border-bottom-color:rgba(255,255,255,.3);cursor:default}
.ft-s1 .ft-f{animation:ftYaz 1.5s .1s linear both}
.ft-sekil{width:min(300px,80%);overflow:visible}
.ft-z{stroke:rgba(234,244,255,.4);stroke-width:1.5}
.ft-yol{fill:none;stroke:#FFD86B;stroke-width:2.5;stroke-linecap:round;stroke-dasharray:4 6}
.ft-ok{stroke:#7FE3FF;stroke-width:3;stroke-linecap:round}
.ft-top{fill:#FF9F5A}
.ft-s1 .ft-yol{animation:ftBel .8s 1.4s both}
.ft-s1 .ft-top{animation:ftUc 2.2s 1.9s linear both}
@keyframes ftUc{0%{transform:translate(0,0)}25%{transform:translate(50px,-45px)}50%{transform:translate(100px,-60px)}75%{transform:translate(150px,-45px)}100%{transform:translate(200px,0)}}
.ft-olcu{display:grid;grid-template-columns:34px minmax(0,1fr) 70px;align-items:center;gap:12px;width:min(380px,86vw)}
.ft-sem{font:italic 28px var(--math)}
.ft-ray{position:relative;height:14px;border-radius:3px;background:repeating-linear-gradient(90deg,rgba(234,244,255,.4) 0 1px,transparent 1px 10%) 0 0/100% 7px no-repeat,rgba(234,244,255,.08)}
.ft-ray i{position:absolute;left:0;top:0;bottom:0;width:33%;border-radius:3px;background:#FFD86B}
.ft-ray i::after{content:"";position:absolute;right:-9px;top:-5px;width:18px;height:24px;border-radius:5px;background:#F4FAF5;box-shadow:0 2px 0 rgba(0,0,0,.3)}
.ft-olcu b{font:500 18px 'JetBrains Mono',monospace;color:#FFD86B;text-align:right}
.ft-sonuc{font:400 clamp(34px,4vw,48px) var(--math);color:#FFD86B;text-align:left}
.ft-olcu em{font:500 14px 'JetBrains Mono',monospace;font-style:normal;color:#B9CEC4}
.ft-soru{max-width:360px;padding:14px 18px;border-radius:6px;background:#FAF7F0;color:#1E2A44;text-align:left;transform:rotate(-1.2deg);box-shadow:0 10px 20px -10px rgba(0,0,0,.5)}
.ft-soru small{display:inline-block;padding:1px 8px;border-radius:999px;background:#FFE36E;font:500 11px 'JetBrains Mono',monospace}
.ft-soru p{margin:8px 0 10px;font-size:16px;font-weight:600}
.ft-sik{display:flex;gap:8px}
.ft-sik span{flex:1;padding:6px 0;text-align:center;border:1px solid rgba(30,42,68,.2);border-radius:6px;font:600 15px 'Instrument Sans',sans-serif}
.ft-s3 [data-ft-dogru]{animation:ftDogru .4s 2s forwards}
@keyframes ftDogru{to{background:rgba(30,122,76,.14);border-color:#1E7A4C;color:#1E7A4C}}
.ft-sohbet{display:grid;gap:10px;width:min(400px,88vw)}
.ft-sohbet p{margin:0;padding:10px 14px;border-radius:14px;font-size:15px;text-align:left;opacity:0}
.ft-sen{justify-self:end;background:#FAF7F0;color:#1E2A44;font-weight:600;border-radius:14px 4px 14px 14px!important}
.ft-ac{justify-self:start;border:1.5px dashed rgba(234,244,255,.5);border-radius:4px 14px 14px 14px!important}
.ft-s4 .ft-sen{animation:ftGel .4s .3s forwards}.ft-s4 .ft-ac{animation:ftGel .4s 1.3s forwards}
@keyframes ftGel{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.ft-nokta{position:absolute;right:26px;bottom:22px;display:flex;gap:6px;z-index:1}
.ft-nokta i{width:8px;height:8px;border-radius:50%;background:rgba(234,244,255,.25);transition:background .3s,transform .3s}
.ft-nokta i.gecti{background:rgba(234,244,255,.55)}
.ft-nokta i.on{background:#FFD86B;transform:scale(1.25)}
.ft-alt-satir{display:flex;align-items:flex-start;gap:8px;margin-top:-34px;padding-left:6px;position:relative;z-index:2}
.ft-acd{flex:none;width:110px;height:116px}
.ft-acd svg.acd{width:100%;height:100%;overflow:visible}
.ft-konus{display:grid;gap:8px;min-width:0;padding-top:40px}
.ft-balon{position:relative;margin:0;padding:10px 14px;border-radius:12px;background:var(--yuzey);border:1px solid var(--kenar);box-shadow:0 8px 18px -12px rgba(30,42,68,.4);font:600 20px/1.25 Caveat,cursive;color:var(--murekkep)}
.ft-balon::before{content:"";position:absolute;left:-9px;top:16px;width:16px;height:16px;background:var(--yuzey);border-left:1px solid var(--kenar);border-bottom:1px solid var(--kenar);transform:rotate(45deg)}
.ft-balon.ft-yeni{animation:fsBalon .35s cubic-bezier(.2,.9,.3,1.3)}
.ft-dug{display:flex;flex-wrap:wrap;gap:8px}
.ft-dug .fo-btn{min-height:40px;text-decoration:none}
.ft [data-ft-basla],.ft [data-ft-izle]{display:none}
.ft.ft-bitti [data-ft-basla],.ft.ft-bitti [data-ft-izle]{display:inline-flex}
.ft.ft-bitti [data-ft-atla]{display:none}
@media (max-width:760px){
  .ft-tahta{aspect-ratio:4/3;min-height:0}
  .ft-ic{inset:18px 18px 26px}
  .ft-alt-satir{margin-top:-24px}
  .ft-acd{width:84px;height:88px}
  .ft-konus{padding-top:28px}
  .ft-balon{font-size:18px}
  .ft-sohbet p{font-size:14px}
}
@media (prefers-reduced-motion:reduce){.ft *{animation:none!important;opacity:1}.ft-k{transition:none}}