<style>
  @import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:wght@400;700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Lexend:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap');
  :root{
    --ink:#1b2030;--ink-soft:#414a5e;--muted:#7b8499;--paper:#ffffff;--desk:#e6e9f1;
    --desk-edge:#d4d9e6;--grid:#d9e6f4;--grid-strong:#c4d6ee;--primary:#2f4bd6;--primary-deep:#1d2f93;
    --primary-soft:#eaeefc;--accent:#ee5253;--accent-soft:#fdeceb;--good:#10a06a;--good-soft:#e4f6ee;
    --amber:#f2a60c;--amber-soft:#fdf2da;--line:#e7eaf1;--shadow:0 10px 30px -12px rgba(27,32,48,.28);
    --shadow-sm:0 4px 14px -8px rgba(27,32,48,.30);--r:16px;--r-sm:11px;
  }
  *{box-sizing:border-box}html,body{height:100%}
  body{margin:0;font-family:'Plus Jakarta Sans',system-ui,sans-serif;color:var(--ink);background:var(--desk);-webkit-font-smoothing:antialiased}
  .app{display:flex;flex-direction:column;height:100vh;overflow:hidden}
  header.top{flex:0 0 auto;display:flex;align-items:center;gap:18px;padding:12px 20px;padding-right:106px;background:var(--paper);border-bottom:1px solid var(--line);z-index:30}
  .brand{display:flex;align-items:center;gap:11px}
  .brand-mark{width:38px;height:38px;border-radius:11px;flex:0 0 auto;background:linear-gradient(135deg,var(--primary),var(--primary-deep));position:relative;box-shadow:var(--shadow-sm)}
  .brand-mark::before{content:"";position:absolute;inset:8px;border-radius:4px;background-image:linear-gradient(rgba(255,255,255,.85) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.85) 1px,transparent 1px);background-size:6px 6px;opacity:.9}
  .brand h1{font-size:17px;font-weight:800;margin:0;letter-spacing:-.3px}
  .brand p{margin:0;font-size:11px;color:var(--muted);font-weight:600}
  .cloud-tag{margin-left:auto;display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--muted);font-weight:600;background:var(--desk);padding:7px 12px;border-radius:999px}
  .anlat-cta{margin-left:20px;display:inline-flex;align-items:center;gap:7px;border:none;cursor:pointer;font-family:inherit;font-weight:800;font-size:13px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-deep));padding:9px 16px;border-radius:999px;box-shadow:var(--shadow-sm);transition:.15s}
  .anlat-cta:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
  @media(max-width:520px){ .anlat-cta{margin-left:auto;font-size:12px;padding:8px 12px} .cloud-tag{display:none} }
  .dot{width:8px;height:8px;border-radius:50%;background:var(--good);box-shadow:0 0 0 3px var(--good-soft)}
  .mnav{display:none}
  main{flex:1 1 auto;display:grid;grid-template-columns:280px 1fr;min-height:0}
  .col{min-height:0;display:flex;flex-direction:column;background:var(--paper)}
  .col.left{border-right:1px solid var(--line)}.col.right{border-left:1px solid var(--line)}
  .col.center{background:var(--desk);position:relative}
  .col-head{flex:0 0 auto;padding:15px 16px 11px;display:flex;align-items:center;gap:9px}
  .eyebrow{font-family:'Space Mono',monospace;font-size:10.5px;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);font-weight:700}
  .col-head h2{margin:0;font-size:14px;font-weight:800;letter-spacing:-.2px}

  /* LEFT: uploads + pages */
  .uploader{margin:0 14px 12px;border:2px dashed var(--grid-strong);border-radius:14px;padding:18px 14px;text-align:center;cursor:pointer;transition:.15s;background:#fafbff}
  .uploader:hover,.uploader.drag{border-color:var(--primary);background:var(--primary-soft)}
  .uploader .ic{font-size:26px}
  .uploader .t{font-weight:800;font-size:13px;margin-top:6px}
  .uploader .s{font-size:11px;color:var(--muted);font-weight:600;margin-top:3px}
  .pages{flex:1 1 auto;overflow-y:auto;padding:2px 12px 18px;display:flex;flex-direction:column;gap:10px}
  .pagecard{border:1px solid var(--line);border-radius:12px;overflow:hidden;cursor:pointer;transition:.15s;background:#fff;position:relative}
  .pagecard:hover{border-color:var(--grid-strong);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
  .pagecard.on{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-soft)}
  .pagecard img{width:100%;display:block;max-height:150px;object-fit:cover;object-position:top;background:#f0f2f7}
  .pagecard .pf{display:flex;align-items:center;gap:8px;padding:8px 10px;font-size:11.5px;font-weight:700;color:var(--ink-soft)}
  .pagecard .pf .cnt{margin-left:auto;font-family:'Space Mono',monospace;font-size:10px;color:var(--primary);background:var(--primary-soft);padding:2px 7px;border-radius:6px}
  .pagecard .pf .cnt.work{color:var(--amber);background:var(--amber-soft)}
  .pagecard .del{position:absolute;top:6px;right:6px;width:22px;height:22px;border-radius:50%;background:rgba(27,32,48,.6);color:#fff;border:none;cursor:pointer;font-size:13px;display:flex;align-items:center;justify-content:center}
  .left-empty{color:var(--muted);font-size:12.5px;font-weight:600;text-align:center;padding:20px 16px;line-height:1.6}

  /* CENTER */
  .center-wrap{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;padding:16px 18px 18px;gap:14px}
  .empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--muted);gap:14px;padding:30px}
  .empty .big{width:74px;height:74px;border-radius:18px;background:var(--paper);box-shadow:var(--shadow);position:relative}
  .empty .big::before{content:"";position:absolute;inset:14px;border-radius:6px;background-image:linear-gradient(var(--grid-strong) 1px,transparent 1px),linear-gradient(90deg,var(--grid-strong) 1px,transparent 1px);background-size:9px 9px}
  .empty h3{margin:0;color:var(--ink);font-size:16px;font-weight:800}
  .empty p{margin:0;max-width:320px;font-size:13px;line-height:1.6;font-weight:500}

  /* PAGE VIEW (with boxes) */
  .pv{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;background:var(--paper);border-radius:var(--r);box-shadow:var(--shadow);border:1px solid var(--desk-edge);overflow:hidden}
  .pv-bar{flex:0 0 auto;display:flex;align-items:center;gap:9px;padding:10px 12px;border-bottom:1px solid var(--line);flex-wrap:wrap}
  .pv-bar .nm{font-weight:800;font-size:13px}
  .pv-bar .hint{font-size:11.5px;color:var(--muted);font-weight:600}
  .pv-stage-wrap{flex:1 1 auto;min-height:0;overflow:auto;padding:14px;display:flex;justify-content:center;background:var(--desk)}
  .pv-stage{position:relative;align-self:flex-start;box-shadow:var(--shadow);border-radius:8px;overflow:hidden;background:#fff;max-width:100%}
  .pv-stage img{display:block;width:100%;height:auto;user-select:none;-webkit-user-drag:none}
  .overlay{position:absolute;inset:0}
  .qbox{position:absolute;border:2px solid rgba(238,82,83,.55);border-radius:9px;background:rgba(238,82,83,.07);cursor:pointer;transition:background .12s,border-color .12s}
  .qbox:hover{background:rgba(238,82,83,.16);border-color:var(--accent)}
  .qbox .lbl{position:absolute;top:-13px;left:-13px;min-width:26px;height:26px;padding:0 5px;border-radius:999px;background:var(--accent);color:#fff;border:2.5px solid #fff;
    box-shadow:0 3px 8px -2px rgba(238,82,83,.6);font-family:'Space Mono',monospace;font-weight:700;font-size:11px;display:flex;align-items:center;justify-content:center;white-space:nowrap}
  .qbox.edit{border-style:dashed;cursor:move}
  .qbox.bilgi{border-color:rgba(47,75,214,.6);background:rgba(47,75,214,.07)}
  .qbox.bilgi:hover{background:rgba(47,75,214,.16);border-color:#2f4bd6}
  .qbox.bilgi .lbl{background:#2f4bd6}
  .qbox .h{position:absolute;width:16px;height:16px;background:#fff;border:2px solid var(--accent);border-radius:50%;right:-9px;bottom:-9px;cursor:nwse-resize}
  .qbox .rm{position:absolute;top:-10px;right:-10px;width:20px;height:20px;border-radius:50%;background:#1b2030;color:#fff;border:2px solid #fff;font-size:11px;cursor:pointer;display:none;align-items:center;justify-content:center}
  .qbox.edit .rm{display:flex}
  .qbox .tg{position:absolute;bottom:-12px;left:-8px;height:21px;padding:0 8px;border-radius:999px;background:#1b2030;color:#fff;border:2px solid #fff;font-size:10px;font-weight:700;cursor:pointer;display:none;align-items:center;white-space:nowrap}
  .qbox.edit .tg{display:inline-flex}
  .pv-detecting{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;background:rgba(255,255,255,.7);color:var(--ink-soft);font-weight:700;font-size:13px}

  /* DESK VIEW */
  .slip{background:var(--paper);border-radius:var(--r);box-shadow:var(--shadow);border:1px solid var(--desk-edge);padding:14px 16px;flex:0 0 auto;animation:lift .4s cubic-bezier(.2,.8,.2,1);position:relative}
  @keyframes lift{0%{opacity:0;transform:translateY(14px) scale(.98)}100%{opacity:1;transform:none}}
  .slip-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
  .slip-no{font-family:'Space Mono',monospace;font-weight:700;font-size:12px;color:#fff;background:var(--accent);padding:3px 9px;border-radius:7px}
  .slip-src{font-size:11px;color:var(--muted);font-weight:600}
  .slip-back{margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:8px;font-family:inherit;font-weight:700;font-size:11.5px;padding:6px 10px;cursor:pointer;color:var(--ink-soft)}
  .slip-back:hover{border-color:var(--primary);color:var(--primary)}
  .slip-crop{display:block;max-width:100%;width:auto;max-height:min(50vh,520px);margin:0 auto;border-radius:9px;border:1px solid var(--line);cursor:default;background:#fff}
  .lightbox{position:fixed;inset:0;background:rgba(15,18,28,.85);display:flex;align-items:center;justify-content:center;z-index:120;padding:22px;cursor:zoom-out}
  .lightbox img{max-width:97%;max-height:97%;border-radius:10px;box-shadow:var(--shadow);background:#fff}

  /* ===== TAM EKRAN ÇALIŞMA ALANI ===== */
  .ws{position:fixed;inset:0;background:var(--desk);z-index:60;display:none;flex-direction:column}
  .desk-bar{flex:0 0 auto;display:flex;align-items:center;gap:8px;padding:7px 12px;padding-right:104px;background:var(--paper);border-bottom:1px solid var(--line);flex-wrap:nowrap;overflow-x:auto}
  .desk-bar .nm{font-weight:800;font-size:13px;color:var(--ink);white-space:nowrap;margin-right:4px}
  .desk-bar .btn.sm{padding:7px 12px;font-size:12.5px;box-shadow:none}
  .desk-bar .qbtn{padding:6px 10px;white-space:nowrap}
  .ws-back{border:1px solid var(--line);background:#fff;color:var(--ink-soft);border-radius:9px;font-family:inherit;font-weight:800;font-size:14px;padding:6px 11px;cursor:pointer}
  .ws-back:hover{background:var(--desk)}
  .ws-tab{border:1px solid #2c3346;background:#1d2231;color:#c5ccdd;border-radius:10px;font-family:inherit;font-weight:700;font-size:13px;padding:9px 14px;cursor:pointer;display:inline-flex;gap:7px;align-items:center}
  .ws-tab:hover{background:#262d40}
  .ws-tab.on.solve{background:var(--primary);border-color:transparent;color:#fff}
  .ws-tab.on.self{background:var(--accent);border-color:transparent;color:#fff}
  .ws-body{flex:1 1 auto;min-height:0;display:flex}
  .ws-img{flex:0 0 42%;min-width:0;background:#0b0e16;display:flex;align-items:center;justify-content:center;padding:18px;border-right:1px solid #232838}
  .ws-img img{max-width:100%;max-height:100%;object-fit:contain;border-radius:8px;cursor:default;background:#fff}
  .ws-work{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;background:var(--paper)}
  @media(max-width:1080px){ .ws{right:0} .ws-img{flex-basis:38%} }
  @media(max-width:720px){ .ws-body{flex-direction:column} .ws-img{flex:0 0 34%;border-right:none;border-bottom:1px solid #232838} }

  .modes{display:flex;gap:8px;flex:0 0 auto}
  .mode-btn{flex:1;border:1px solid var(--desk-edge);background:var(--paper);border-radius:11px;padding:11px;font-family:inherit;font-weight:700;font-size:13px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;color:var(--ink-soft);transition:.15s}
  .mode-btn:hover{border-color:var(--grid-strong)}
  .mode-btn.on{color:#fff;border-color:transparent;box-shadow:var(--shadow-sm)}
  .mode-btn.on.solve{background:var(--primary)}.mode-btn.on.self{background:var(--accent)}
  .mode-btn small{display:block;font-size:10px;font-weight:600;opacity:.85}

  .board{flex:1 1 auto;min-height:0;border-radius:var(--r);overflow:hidden;position:relative;background:var(--paper);box-shadow:var(--shadow);border:1px solid var(--desk-edge);display:flex;flex-direction:column}
  .board-grid{background-color:var(--paper);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:22px 22px}
  .board-toolbar{flex:0 0 auto;display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.72);backdrop-filter:blur(4px);flex-wrap:wrap}
  .btn{border:none;border-radius:9px;font-family:inherit;font-weight:700;font-size:12.5px;padding:9px 13px;cursor:pointer;display:inline-flex;align-items:center;gap:7px;transition:.15s}
  .btn:disabled{opacity:.5;cursor:not-allowed}
  .btn.primary{background:var(--primary);color:#fff}.btn.primary:hover:not(:disabled){background:var(--primary-deep)}
  .btn.accent{background:var(--accent);color:#fff}.btn.accent:hover:not(:disabled){filter:brightness(.95)}
  .btn.ghost{background:var(--desk);color:var(--ink-soft)}.btn.ghost:hover:not(:disabled){background:var(--desk-edge)}
  .quick{display:flex;gap:6px;flex-wrap:wrap;margin-left:auto}
  .qbtn{border:1px solid var(--line);background:#fff;border-radius:999px;font-family:inherit;font-weight:600;font-size:11.5px;padding:6px 11px;cursor:pointer;color:var(--ink-soft);transition:.15s}
  .qbtn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}
  .board-body{flex:1 1 auto;min-height:0;overflow-y:auto;position:relative}
  .solution{padding:18px 22px;font-size:14px;line-height:1.75;color:var(--ink)}
  .solution h4{margin:18px 0 8px;font-size:13px;font-family:'Space Mono',monospace;letter-spacing:.5px;text-transform:uppercase;color:var(--primary)}
  .solution h4:first-child{margin-top:0}
  .solution strong{font-weight:800;color:var(--ink)}
  .solution .final{margin-top:16px;background:var(--good-soft);border:1px solid #bfe6d4;border-radius:11px;padding:12px 14px;font-weight:700;color:#0b7a51}
  .solution .katex{font-size:1.06em}
  .think{display:flex;align-items:center;gap:11px;color:var(--muted);font-weight:600;font-size:13.5px;padding:22px}
  .pencil{width:18px;height:18px;border:2.5px solid var(--grid-strong);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}
  @keyframes spin{to{transform:rotate(360deg)}}
  .caret::after{content:"";display:inline-block;width:2px;height:1.05em;background:var(--primary);margin-left:1px;vertical-align:text-bottom;animation:blink .9s step-end infinite}
  @keyframes blink{50%{opacity:0}}

  .note-tools{flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:9px 12px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.85);backdrop-filter:blur(4px);flex-wrap:wrap}
  .tgroup{display:flex;gap:4px;background:var(--desk);padding:4px;border-radius:11px}
  .tool{width:34px;height:34px;border:none;border-radius:8px;background:transparent;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:.13s;color:var(--ink-soft)}
  .tool:hover{background:#fff}.tool.on{background:#fff;box-shadow:var(--shadow-sm)}
  .tool.on[data-tool="pen"]{color:var(--primary)}.tool.on[data-tool="hl"]{color:var(--amber)}.tool.on[data-tool="eraser"]{color:var(--accent)}
  .swatches{display:flex;gap:5px}
  .sw{width:22px;height:22px;border-radius:50%;cursor:pointer;border:2px solid #fff;box-shadow:0 0 0 1px var(--line);transition:.13s}
  .sw.on{box-shadow:0 0 0 2px var(--ink);transform:scale(1.12)}
  .widths{display:flex;gap:5px;align-items:center}
  .wd{width:30px;height:26px;border:1px solid var(--line);border-radius:7px;background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center}
  .wd.on{border-color:var(--ink)}.wd i{display:block;background:var(--ink);border-radius:2px;width:16px}
  .note-host{flex:1 1 auto;position:relative;min-height:0}
  canvas#pad{position:absolute;inset:0;width:100%;height:100%;touch-action:none;cursor:crosshair}
  .pad-hint{position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);color:#aab2c4;font-weight:700;font-size:14px;pointer-events:none;text-align:center}
  .self-foot{flex:0 0 auto;border-top:1px solid var(--line);background:rgba(255,255,255,.9)}
  .uprow{display:flex;align-items:center;gap:9px;padding:9px 12px;flex-wrap:wrap;border-bottom:1px dashed var(--line)}
  .upbtn{border:1.5px dashed var(--grid-strong);background:#fff;color:var(--primary);border-radius:9px;font-family:inherit;font-weight:700;font-size:12px;padding:8px 12px;cursor:pointer;display:inline-flex;gap:7px;align-items:center}
  .upbtn:hover{background:var(--primary-soft)}
  .upnote{font-size:11px;color:var(--muted);font-weight:600}
  .thumbs{display:flex;gap:7px;flex-wrap:wrap}
  .thumb{position:relative;width:46px;height:46px;border-radius:8px;overflow:hidden;border:1px solid var(--line)}
  .thumb img{width:100%;height:100%;object-fit:cover}
  .thumb .x{position:absolute;top:-5px;right:-5px;width:18px;height:18px;border-radius:50%;background:var(--accent);color:#fff;border:2px solid #fff;font-size:11px;cursor:pointer;display:flex;align-items:center;justify-content:center;line-height:1}
  .thumb .key{position:absolute;left:0;bottom:0;right:0;background:var(--amber);color:#3a2a00;font-size:8px;font-weight:800;text-align:center}
  .checkrow{display:flex;align-items:center;gap:9px;padding:10px 12px}
  .checkrow input{flex:1;border:1.5px solid var(--line);border-radius:9px;padding:9px 12px;font-family:inherit;font-size:13px;font-weight:600;outline:none}
  .checkrow input:focus{border-color:var(--accent)}
  .feedwrap{border-top:1px solid var(--line)}
  .feedback{padding:14px 18px;font-size:13.5px;line-height:1.7}
  .verdict{display:inline-flex;align-items:center;gap:7px;font-weight:800;font-size:13px;padding:5px 11px;border-radius:999px;margin-bottom:8px}
  .verdict.ok{background:var(--good-soft);color:#0b7a51}.verdict.no{background:var(--accent-soft);color:#b23636}

  .chat-body{flex:1 1 auto;overflow-y:auto;padding:8px 14px 14px;display:flex;flex-direction:column;gap:11px}
  .ctx-pill{font-size:11px;color:var(--muted);font-weight:600;background:var(--desk);align-self:center;padding:5px 11px;border-radius:999px;margin:4px 0}
  .msg{max-width:88%;font-size:13.5px;line-height:1.6;font-weight:500;padding:10px 13px;border-radius:14px}
  .msg.ai{background:var(--desk);color:var(--ink);align-self:flex-start;border-bottom-left-radius:5px}
  .msg.me{background:var(--primary);color:#fff;align-self:flex-end;border-bottom-right-radius:5px;font-weight:600}
  .msg.ai strong{font-weight:800}
  .suggest{display:flex;flex-wrap:wrap;gap:7px;padding:0 14px 10px}
  .suggest button{border:1px solid var(--line);background:#fff;border-radius:999px;font-family:inherit;font-weight:600;font-size:11.5px;padding:7px 11px;cursor:pointer;color:var(--ink-soft);transition:.15s;text-align:left}
  .suggest button:hover{border-color:var(--primary);color:var(--primary)}
  .chat-input{flex:0 0 auto;border-top:1px solid var(--line);padding:11px 12px;display:flex;gap:8px}
  .chat-input input{flex:1;border:1.5px solid var(--line);border-radius:11px;padding:11px 13px;font-family:inherit;font-size:13.5px;font-weight:500;outline:none}
  .chat-input input:focus{border-color:var(--primary)}
  .send{width:42px;height:42px;flex:0 0 auto;border:none;border-radius:11px;background:var(--primary);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center}
  .send:hover{background:var(--primary-deep)}.send:disabled{opacity:.5;cursor:not-allowed}
  ::-webkit-scrollbar{width:9px;height:9px}::-webkit-scrollbar-thumb{background:#cfd5e3;border-radius:9px;border:2px solid var(--paper)}

  @media(max-width:1080px){
    main{grid-template-columns:1fr}.col{display:none}.col.show{display:flex}
    .mnav{display:flex;flex:0 0 auto;background:var(--paper);border-top:1px solid var(--line)}
    .mnav button{flex:1;border:none;background:transparent;font-family:inherit;font-weight:700;font-size:12px;padding:12px 6px;color:var(--muted);cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px;border-top:2.5px solid transparent}
    .mnav button.on{color:var(--primary);border-top-color:var(--primary)}
    .col.right{border-left:none}.col.left{border-right:none}
  }

  /* ---- EĞLENCE: Zeki Hoca avatarı, konfeti, Mermaid ---- */
  #confeti-canvas{position:fixed;inset:0;pointer-events:none;z-index:9999;width:100%;height:100%}
  @keyframes float{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-5px) rotate(3deg)}}
  @keyframes wave{0%,100%{transform:rotate(0)}25%{transform:rotate(-9deg)}75%{transform:rotate(9deg)}}
  .avatar-card{background:linear-gradient(135deg,var(--primary),var(--primary-deep));border-radius:14px;padding:13px 14px;margin:0 14px 6px;color:#fff;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
  .avatar-card::after{content:"";position:absolute;width:90px;height:90px;background:rgba(255,255,255,.06);border-radius:50%;bottom:-28px;right:-22px}
  .avatar-img-wrap{width:46px;height:46px;background:rgba(255,255,255,.22);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;position:relative;animation:float 4s ease-in-out infinite;flex:0 0 auto}
  .avatar-status{position:absolute;bottom:-2px;right:-2px;width:12px;height:12px;border-radius:50%;background:var(--good);border:2px solid #fff}
  .avatar-text h3{margin:0;font-size:14px;font-weight:800;letter-spacing:-.2px}
  .avatar-text p{margin:3px 0 0;font-size:11px;opacity:.9;font-weight:600}
  .solution .mermaid,.msg .mermaid{background:#f6f8ff;border:1px solid var(--line);border-radius:11px;padding:12px;margin:12px 0;text-align:center;overflow-x:auto}

  /* Önde giden yazıcı tırtıl + kelime belirişi (kutusuz) */
  .bug{display:inline-block;margin:0 2px;filter:drop-shadow(0 1px 1px rgba(0,0,0,.18));animation:bug-bob .5s ease-in-out infinite}
  @keyframes bug-bob{0%,100%{transform:translateY(0) rotate(-5deg)}50%{transform:translateY(-3px) rotate(6deg)}}
  .wrd{animation:wd-fade .34s ease both}
  @keyframes wd-fade{from{opacity:0;color:var(--primary)}to{opacity:1}}
  .calm .wrd{animation:wd-fade-calm .26s ease both}
  @keyframes wd-fade-calm{from{opacity:0}to{opacity:1}}
  .calm .bug{display:none}
  .ws-calm{border:1px solid var(--line);background:#fff;border-radius:999px;font-family:inherit;font-weight:700;font-size:11.5px;padding:6px 12px;cursor:pointer;color:var(--ink-soft)}
  .ws-calm.on{background:var(--primary-soft);color:var(--primary-deep);border-color:#d8def8}
  /* Çözüm metni: okunaklı font + sınırlı satır genişliği */
  .solution{font-family:'Atkinson Hyperlegible','Lexend',system-ui,sans-serif;max-width:66ch;line-height:1.8;letter-spacing:.012em;word-spacing:.04em}
  .ai-flow,.ai-flow .solution,.ai-flow .sol-area,.hint-tx{max-width:none;width:auto}
  .ai-flow .solution{max-width:68ch}
  .hint-tx{font-family:'Atkinson Hyperlegible','Lexend',system-ui,sans-serif;letter-spacing:.012em;word-spacing:.04em}
  .msg{font-family:'Lexend',system-ui,sans-serif}
  /* Üretken zorlanma merdiveni */
  .invite{padding:26px 22px;text-align:center;color:var(--ink-soft)}
  .invite-emoji{font-size:34px;margin-bottom:6px}
  .invite h4{margin:6px 0 6px;font-size:16px;color:var(--ink)}
  .invite p{margin:0 auto;max-width:46ch;font-size:13.5px;line-height:1.7;color:var(--muted)}
  .ladder{padding:16px 18px;display:flex;flex-direction:column;gap:12px}
  .hint-card{background:var(--amber-soft);border:1px solid #f7e2a8;border-left:4px solid var(--amber);border-radius:12px;padding:12px 14px}
  .hint-no{font-family:'Space Mono',monospace;font-size:10px;font-weight:700;color:#9a6b00;letter-spacing:.5px;text-transform:uppercase}
  .hint-tx{font-family:'Lexend',system-ui,sans-serif;font-size:14px;line-height:1.7;color:var(--ink-soft);margin-top:4px}
  .ladder-ctr{display:flex;gap:10px;flex-wrap:wrap;margin-top:2px}
  .sol-wrap{padding:4px 4px 14px}
  .se-card{margin:14px 18px 4px;background:var(--primary-soft);border:1px solid #d8def8;border-radius:14px;padding:14px 16px}
  .se-q{font-family:'Lexend',system-ui,sans-serif;font-weight:600;font-size:14px;color:var(--primary-deep);line-height:1.6}
  .se-row{display:flex;gap:8px;margin-top:10px}
  .se-row input{flex:1;border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;font-family:'Lexend',system-ui,sans-serif;font-size:14px}
  .se-row input:focus{border-color:var(--primary)}
  .se-fb{margin-top:10px}

  /* Soru bölme bitince kutular renklenerek belirir */
  @keyframes box-in{0%{opacity:0;transform:scale(.55);border-color:var(--good)}60%{opacity:1;border-color:var(--good);box-shadow:0 0 0 4px rgba(16,160,106,.18)}100%{opacity:1;transform:none}}
  .qbox.fresh{animation:box-in .5s cubic-bezier(.2,.9,.2,1) backwards}
  .qbox.fresh .lbl{animation:lbl-pop .5s .1s backwards}
  @keyframes lbl-pop{0%{transform:scale(0)}70%{transform:scale(1.25)}100%{transform:scale(1)}}
  /* Sayfa kartı analiz bitince yeşil nabız */
  @keyframes card-flash{0%{box-shadow:0 0 0 0 rgba(16,160,106,.55)}100%{box-shadow:0 0 0 14px rgba(16,160,106,0)}}
  .pagecard.flash{animation:card-flash .9s ease-out 2}
  .pagecard.flash .cnt{background:var(--good-soft);color:#0f7a4f}

  /* Yanlış cevap komik animasyonları */
  .fx-over{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:8}
  .fx-actor{position:absolute;top:38%;font-size:34px;white-space:nowrap;animation:fx-cross 1.45s ease-in-out forwards}
  .fx-actor .ex{font-style:normal;margin:0 -4px;opacity:.85}
  @keyframes fx-cross{0%{left:-16%}100%{left:112%}}
  .fx-actor.fly{animation:fx-cross 1.45s ease-in-out forwards, fx-arc 1.45s ease-in-out forwards}
  @keyframes fx-arc{0%,100%{transform:translateY(0)}50%{transform:translateY(-46px) rotate(8deg)}}
  .fx-actor.hop{animation:fx-cross 1.45s linear forwards, fx-hop .42s ease-in-out infinite}
  @keyframes fx-hop{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}
  .fx-actor.spin .ex{display:inline-block;animation:fx-spin .5s linear infinite}
  @keyframes fx-spin{to{transform:rotate(360deg)}}
  .fx-wipe{position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.92));transform:translateX(-100%);animation:fx-wipe 1.45s ease-in-out forwards;pointer-events:none}
  @keyframes fx-wipe{0%{transform:translateX(-100%)}100%{transform:translateX(0)}}

  /* ===== BİRLEŞİK DEFTER (AI + çocuk aynı yüzeyde) ===== */
  .desk-toolbar{flex:0 0 auto;display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.85);backdrop-filter:blur(6px);flex-wrap:wrap}
  .desk-scroll{flex:1 1 auto;min-height:0;overflow:auto;background:var(--paper);
    background-image:radial-gradient(var(--grid-strong) .9px, transparent .9px);background-size:22px 22px}
  .desk-content{position:relative;min-height:100%;max-width:none;margin:0;padding:20px 0}
  .desk-inner{max-width:880px;margin:0 auto;padding:0 18px;position:relative;z-index:1}
  .q-ref{float:right;max-width:min(34%,320px);margin:0 0 12px 18px;vertical-align:top;text-align:left}
  @media(max-width:680px){ .q-ref{float:none;max-width:min(62%,420px);margin:0 0 12px} }
  .q-ref img{display:block;width:auto;max-width:100%;max-height:clamp(150px,30vh,300px);object-fit:contain;border-radius:12px;border:1px solid var(--line);box-shadow:var(--shadow-sm);cursor:default;background:#fff}
  .q-ref .qtip{font-size:11px;color:var(--muted);font-weight:600;line-height:1.4;text-align:left;display:block;margin-top:4px}
  .board-label{display:flex;align-items:center;gap:7px;margin:2px 2px 10px;font-weight:800;font-size:12.5px;color:var(--primary-deep);letter-spacing:.3px;clear:both}
  .board-label[data-mode="cozum"]::before{content:"✏️ Çözüm tahtası — buraya yaz"}
  .board-label[data-mode="bilgi"]::before{content:"📘 Konu anlatımı — “Anlat” ile şema/çizimli açıklama al"}
  .ai-flow{position:relative;z-index:1}
  canvas#pad{position:absolute;left:0;top:0;width:100%;touch-action:none;z-index:3;pointer-events:none}
  canvas#pad.on{pointer-events:auto;cursor:crosshair}
  .pen-bar{flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:8px 14px;border-top:1px solid var(--line);background:rgba(255,255,255,.95);flex-wrap:wrap}
  .reliability{display:flex;align-items:center;gap:8px;margin:14px 2px 2px;padding:9px 12px;border:1px dashed #c9d2ea;background:#f7f9ff;border-radius:10px;font-size:12px;color:#4a5578;font-weight:600;position:relative;z-index:1}

  /* ===== SOHBET KÖŞESİ (küçük, tıklayınca büyür) ===== */
  .chat-dock{position:fixed;right:16px;bottom:16px;z-index:120;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
  .chat-launch{display:flex;align-items:center;gap:8px;height:52px;padding:0 18px 0 12px;border:none;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;cursor:pointer;box-shadow:var(--shadow);font-family:inherit;font-weight:700;font-size:13px}
  .chat-launch .face{width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.22);display:flex;align-items:center;justify-content:center;font-size:19px}
  .chat-panel{width:350px;max-width:88vw;height:64vh;max-height:560px;background:var(--paper);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);display:none;flex-direction:column;overflow:hidden}
  .chat-dock.open .chat-panel{display:flex}
  .chat-dock.open .chat-launch{display:none}
  .chat-phead{display:flex;align-items:center;gap:10px;padding:12px 14px;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff}
  .chat-phead .avatar-img-wrap{width:38px;height:38px;font-size:20px;margin:0}
  .chat-phead h3{margin:0;font-size:14px;font-weight:800}
  .chat-phead p{margin:1px 0 0;font-size:10.5px;opacity:.9}
  .chat-phead .x{margin-left:auto;background:rgba(255,255,255,.18);border:none;color:#fff;width:30px;height:30px;border-radius:8px;cursor:pointer;font-size:16px}
  @media(max-width:1080px){ .chat-panel{height:70vh} }
  .review-chip{margin-top:8px;align-self:flex-start;border:1px solid #c9d2ea;background:#eef1fb;color:var(--primary-deep);border-radius:999px;font-family:inherit;font-weight:700;font-size:11.5px;padding:6px 12px;cursor:pointer}
  .review-chip:hover{background:#e2e7f8}

  /* ===== HESAP EKRANLARI ===== */
  .screens{position:fixed;inset:0;z-index:200;background:var(--desk);overflow:auto}
  .scr-wrap{max-width:920px;margin:0 auto;padding:22px 18px 60px}
  .scr-top{display:flex;align-items:center;gap:12px;margin:6px 2px 18px}
  .scr-top .brand-mark{width:40px;height:40px}
  .scr-top h1{font-size:18px;margin:0;font-weight:800}
  .scr-top .who{margin-left:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-soft);font-weight:700}
  .scr-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-sm);padding:18px;margin-bottom:16px}
  .scr-card h2{margin:0 0 12px;font-size:15px}
  .auth-box{max-width:380px;margin:8vh auto 0}
  .auth-tabs{display:flex;gap:6px;margin-bottom:14px}
  .auth-tabs button{flex:1;border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px;font-family:inherit;font-weight:700;font-size:13px;cursor:pointer;color:var(--ink-soft)}
  .auth-tabs button.on{background:var(--primary);color:#fff;border-color:transparent}
  .fld{display:flex;flex-direction:column;gap:5px;margin-bottom:11px}
  .fld label{font-size:12px;font-weight:700;color:var(--muted)}
  .fld input,.fld select{border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;font-family:inherit;font-size:14px}
  .fld input:focus,.fld select:focus{border-color:var(--primary)}
  .scr-msg{font-size:12.5px;font-weight:700;margin:6px 2px}
  .scr-msg.err{color:var(--accent)}
  .scr-msg.ok{color:var(--good)}
  .row-list{display:flex;flex-direction:column;gap:8px}
  .lrow{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:11px;background:#fff}
  .lrow .nm{font-weight:700;font-size:13.5px}
  .lrow .sub{font-size:11.5px;color:var(--muted);font-weight:600}
  .lrow .sp{margin-left:auto;display:flex;gap:8px;align-items:center}
  .pill{font-size:11px;font-weight:800;padding:3px 9px;border-radius:999px}
  .pill.ready{background:var(--good-soft);color:#0f7a4f}
  .pill.draft{background:var(--amber-soft);color:#9a6b00}
  .pill.done{background:var(--primary-soft);color:var(--primary-deep)}
  .up-grid{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
  .up-card{width:120px;border:1px solid var(--line);border-radius:11px;overflow:hidden;background:#fff;position:relative}
  .up-card img{width:100%;height:90px;object-fit:cover;display:block}
  .up-card .ak{display:flex;align-items:center;gap:5px;font-size:10.5px;font-weight:700;padding:6px 7px;cursor:pointer;color:var(--ink-soft)}
  .up-card.akon{outline:2px solid var(--amber)}
  .up-card .ak input{accent-color:var(--amber)}
  .up-card .seg{font-size:10px;font-weight:700;color:var(--primary-deep);padding:0 7px 7px}
  .karne{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px;margin:8px 0}
  .kbox{border:1px solid var(--line);border-radius:12px;padding:12px;text-align:center;background:#fff}
  .kbox .v{font-size:24px;font-weight:800}
  .kbox .l{font-size:11px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.4px}
  .kbox.net{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;border:none}
  .kbox.net .l{color:rgba(255,255,255,.85)}
  .prog{height:8px;border-radius:999px;background:var(--line);overflow:hidden;margin:4px 0 2px}
  .prog i{display:block;height:100%;background:var(--good)}

  /* ===== ÖDEV / VELİ-ÇOCUK ===== */
  .assign-bar{flex:0 0 auto;border-top:1px solid var(--line);padding:12px 14px;display:flex;flex-direction:column;gap:8px;background:#fafbff}
  .abtn{border:none;border-radius:11px;font-family:inherit;font-weight:800;font-size:13px;padding:11px 12px;cursor:pointer;background:var(--desk);color:var(--ink-soft)}
  .abtn.primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff}
  .abtn.ghost{background:#fff;border:1px solid var(--line)}
  .abtn:hover{filter:brightness(.98)}
  .assign-tip{font-size:11px;color:var(--muted);line-height:1.5}
  .key-toggle{position:absolute;left:8px;top:8px;display:flex;align-items:center;gap:5px;background:rgba(16,20,36,.62);color:#fff;border:none;border-radius:8px;font-size:10.5px;font-weight:800;padding:5px 8px;cursor:pointer;backdrop-filter:blur(2px)}
  .key-toggle.on{background:var(--amber);color:#3b2700}
  .pagecard.iskey{outline:2px solid var(--amber)}

  .modal{position:fixed;inset:0;background:rgba(16,20,34,.55);z-index:200;display:flex;align-items:center;justify-content:center;padding:18px}
  .modal-card{background:#fff;border-radius:18px;box-shadow:var(--shadow);max-width:440px;width:100%;padding:22px;position:relative}
  .modal-card h3{margin:0 0 6px;font-size:18px;color:var(--ink)}
  .modal-card p{margin:0 0 14px;font-size:13px;color:var(--muted);line-height:1.6}
  .modal-x{position:absolute;right:12px;top:12px;border:none;background:var(--desk);width:30px;height:30px;border-radius:8px;cursor:pointer;font-size:16px}
  .code-big{font-family:'Space Mono',monospace;font-weight:700;font-size:34px;letter-spacing:6px;text-align:center;color:var(--primary-deep);background:var(--primary-soft);border:2px dashed #c7cdf6;border-radius:14px;padding:16px;margin:6px 0 12px}
  .modal-card input.fld{width:100%;border:1.5px solid var(--line);border-radius:11px;padding:12px 14px;font-family:inherit;font-size:15px;margin-bottom:10px}
  .modal-card input.code-in{font-family:'Space Mono',monospace;letter-spacing:4px;text-transform:uppercase;text-align:center;font-size:20px}
  .res-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 0}
  .res-cell{background:var(--desk);border-radius:12px;padding:12px;text-align:center}
  .res-cell b{display:block;font-size:24px;color:var(--ink)}
  .res-cell span{font-size:11px;color:var(--muted);font-weight:700}
  .res-net{background:var(--good-soft);border:1px solid #a9e6c9}
  .res-net b{color:#0f7a4f}
  .sess-bar{flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:8px 14px;background:var(--primary-soft);border-bottom:1px solid #d8def8;font-weight:800;font-size:13px;color:var(--primary-deep)}
  .sess-bar .prog{margin-left:auto;font-family:'Space Mono',monospace;font-size:12px}
  .sess-next{display:flex;justify-content:flex-end;padding:12px 16px}

  /* ===== ANLAT: kapılı ders + canlı etkileşim ===== */
  .lesson{max-width:none;clear:both}
  .lesson-actions{display:flex;align-items:center;gap:10px;margin:0 0 12px;flex-wrap:wrap}
  .lesson-vary{display:inline-flex;align-items:center;gap:6px;border:none;cursor:pointer;font-family:inherit;font-weight:800;font-size:12.5px;color:var(--primary-deep);background:var(--primary-soft);border:1px solid #d4dcf9;padding:8px 13px;border-radius:999px;transition:.15s}
  .lesson-vary:hover{background:#dfe6fc;transform:translateY(-1px)}
  .lesson-vary:disabled{opacity:.5;cursor:default;transform:none}
  .lesson-hint{font-size:11.5px;color:var(--muted);font-weight:600}
  .think-fb{color:var(--muted)!important;display:flex;align-items:center;gap:7px}
  .think-fb .pencil{display:inline-block;width:13px;height:13px;border:2px solid var(--primary);border-top-color:transparent;border-radius:50%;animation:spin .7s linear infinite}
  @keyframes spin{to{transform:rotate(360deg)}}
  .lstep-redo{margin-left:2px;background:var(--amber-soft);border:1px solid #f0d28a;color:#9a6a00;font-weight:700}
  .lesson-ozet{font-size:15.5px;line-height:1.75;color:var(--ink);margin:0 0 16px;font-weight:500;background:linear-gradient(180deg,var(--primary-soft),#fff);border:1px solid #dfe5fb;border-left:4px solid var(--primary);border-radius:12px;padding:13px 16px}
  .lesson-steps{display:flex;flex-direction:column;gap:11px;clear:both}
  .lesson-kapanis{font-size:14.5px;background:var(--good-soft);border:1px solid #bfe6d4;border-radius:12px;padding:12px 15px;color:#0b7a51;font-weight:700;margin-top:14px;clear:both}
  .lstep{position:relative;background:#fafbff;border:1px solid var(--line);border-radius:14px;padding:14px 16px 14px 18px;transition:opacity .25s,transform .25s;box-shadow:var(--shadow-sm);overflow:hidden}
  .lstep::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--primary),var(--primary-deep));opacity:.85}
  .lstep:not(.locked){animation:stepPop .35s ease}
  @keyframes stepPop{from{transform:translateY(6px);opacity:.4}to{transform:none;opacity:1}}
  .lstep.locked{opacity:.4;pointer-events:none;transform:scale(.99)}
  .lstep-no{font-size:11.5px;font-weight:800;color:var(--primary);letter-spacing:.4px;text-transform:uppercase;margin-bottom:6px}
  .lstep-body{font-size:15px;line-height:1.75;color:var(--ink)}
  .lstep-q{font-size:14.5px;color:var(--ink-soft);font-weight:700;margin:12px 0 8px}
  .lstep-ans{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
  .lstep-ans .lnum{width:104px;padding:8px 11px;border:1px solid var(--line);border-radius:10px;font-size:14px}
  .lopt{transition:.12s}
  .lopt.ok{background:var(--good-soft);border-color:#bfe6d4;color:#0b7a51}
  .lopt.no{background:var(--accent-soft);border-color:#f3b6b6;color:#b3322f}
  .lstep-fb{font-size:13.5px;min-height:18px;margin-top:8px;font-weight:600}
  .lstep-fb.good{color:var(--good)} .lstep-fb.bad{color:var(--accent)}
  .lesson-tool{background:#fff;border:1px solid #e3e8fa;border-radius:16px;padding:0;margin:0 0 18px;box-shadow:0 8px 26px -14px rgba(47,75,214,.4);clear:both;overflow:hidden}
  .iv-head{font-size:14.5px;font-weight:800;margin:0;padding:13px 16px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-deep));letter-spacing:.2px}
  .lesson-tool .iv-row{padding:0 16px}.lesson-tool .iv-row:first-of-type{padding-top:14px}
  .lesson-tool .iv-stage{padding:0 16px}.lesson-tool .iv-read{margin:0 16px;padding-bottom:14px}
  .iv-row{display:flex;align-items:center;gap:12px;margin-bottom:10px}
  .iv-row label{font-size:13px;color:var(--ink-soft);min-width:64px;font-weight:600}
  .iv-row input[type=range]{flex:1;min-width:130px;accent-color:var(--primary)}
  .iv-row span[data-out]{font-size:18px;font-weight:800;min-width:30px;color:var(--primary-deep)}
  .iv-stage{margin:14px 0;min-height:40px;display:flex;flex-direction:column;align-items:center}
  .iv-grid{display:grid;gap:4px;width:100%}
  .iv-cell{aspect-ratio:1;border-radius:5px;background:var(--paper);border:1px solid var(--line)}
  .iv-cell.on{background:var(--primary-soft);border-color:var(--primary)}
  .iv-chips{display:flex;flex-wrap:wrap;gap:7px;justify-content:center}
  .iv-chip{font-family:'Space Mono',monospace;font-size:13px;background:var(--primary-soft);color:var(--primary-deep);padding:5px 10px;border-radius:9px;font-weight:700}
  .iv-cnt{font-size:13px;color:var(--muted);margin-top:9px;font-weight:600}
  .iv-read{border-top:1px solid var(--line);padding-top:12px;display:flex;gap:22px;flex-wrap:wrap}
  .iv-stat .k{font-size:12px;color:var(--muted);font-weight:600} .iv-stat .v{font-size:22px;font-weight:800;color:var(--ink)}

  /* ===== 5sn koç balonu (kalem okuması) ===== */
  .ink-coach{position:fixed;left:50%;bottom:78px;transform:translateX(-50%) translateY(8px);max-width:min(440px,92vw);z-index:99990;
    background:#1b2030;color:#fff;border-radius:15px;padding:12px 15px 12px 14px;box-shadow:0 12px 34px -10px rgba(27,32,48,.6);
    font:600 13.5px/1.55 'Plus Jakarta Sans',system-ui;display:flex;gap:10px;align-items:flex-start;opacity:0;pointer-events:none;transition:.28s}
  .ink-coach.show{opacity:1;transform:translateX(-50%) translateY(0);pointer-events:auto}
  .ink-coach .ic-face{font-size:22px;line-height:1.2;flex:0 0 auto}
  .ink-coach .ic-tx{flex:1}
  .ink-coach.good{background:#0e7a52} .ink-coach.warn{background:#9a5b00} .ink-coach.again{background:#1d2f93}
  .ink-coach .ic-x{flex:0 0 auto;background:rgba(255,255,255,.16);border:none;color:#fff;border-radius:8px;width:22px;height:22px;cursor:pointer;font-size:14px;line-height:1}

  /* ===== Bana Konu Anlat sekmesi ===== */
  .anlatTab{position:fixed;inset:0;background:var(--desk);z-index:62;display:none;flex-direction:column}
  .anlatTab.show{display:flex}
  .at-bar{flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:9px 14px;padding-right:104px;background:var(--paper);border-bottom:1px solid var(--line)}
  .at-bar .at-title{font-weight:800;font-size:15px}
  .at-bar .at-title small{display:block;font-size:11px;color:var(--muted);font-weight:600}
  .at-scroll{flex:1 1 auto;min-height:0;overflow:auto;background:var(--paper)}
  .at-content{position:relative;min-height:100%;max-width:880px;margin:0 auto;padding:18px}
  .at-hello{background:linear-gradient(180deg,var(--primary-soft),#fff);border:1px solid #dfe5fb;border-radius:16px;padding:18px 20px;margin-bottom:14px}
  .at-hello h3{margin:0 0 6px;font-size:17px}
  .at-hello p{margin:0;color:var(--ink-soft);font-size:13.5px;line-height:1.6}
  .at-board{position:relative}
  .at-ink{position:absolute;left:0;top:0;width:100%;height:100%;touch-action:none;z-index:3;cursor:crosshair}
  .at-ask{position:sticky;bottom:0;z-index:6;display:flex;gap:8px;align-items:center;padding:12px;background:linear-gradient(180deg,rgba(255,255,255,0),#fff 30%)}
  .at-ask input{flex:1;padding:12px 14px;border:1.5px solid var(--line);border-radius:13px;font-size:14.5px;font-family:inherit}
  .at-ask input:focus{outline:none;border-color:var(--primary)}
  .at-penbtn{flex:0 0 auto}
  /* corner sohbet kutusu kaldırıldı — yerini satır içi 'ara soru' + ses aldı */
  #chatDock{display:none!important}

  /* ===== ara soru + ses çubuğu ===== */
  .ask-wrap{flex:0 0 auto;background:var(--paper);border-top:1px solid var(--line)}
  .ask-answer{max-height:38vh;overflow:auto;padding:12px 16px;border-bottom:1px solid var(--line);background:#fbfcff}
  .ask-answer .aa-q{font-weight:800;font-size:13px;color:var(--primary-deep);background:var(--primary-soft);border-radius:10px;padding:7px 11px;margin-bottom:9px;display:inline-block}
  .ask-answer .aa-a{font-size:14.5px;line-height:1.7;color:var(--ink)}
  .ask-bar{display:flex;gap:8px;align-items:center;padding:9px 12px;flex-wrap:wrap}
  .ask-bar input{flex:1;min-width:80px;padding:10px 13px;border:1.5px solid var(--line);border-radius:12px;font-size:14px;font-family:inherit}
  .ask-bar input:focus{outline:none;border-color:var(--primary)}
  .ask-mic{flex:0 0 auto;width:40px;height:40px;border-radius:50%;border:1.5px solid var(--line);background:#fff;font-size:18px;cursor:pointer;transition:.15s}
  .ask-mic:hover{border-color:var(--primary)}
  .ask-mic.on{background:var(--accent);border-color:var(--accent);color:#fff;animation:micPulse 1s ease-in-out infinite}
  @keyframes micPulse{0%,100%{box-shadow:0 0 0 0 rgba(238,82,83,.5)}50%{box-shadow:0 0 0 7px rgba(238,82,83,0)}}
  .narr-toggle{white-space:nowrap}
  .narr-toggle.on{background:var(--good-soft);border-color:#bfe6d4;color:#0b7a51}
  .at-ask .ask-mic{width:42px;height:42px}

  /* ===== şekli büyüt & üzerine çiz ===== */
  .figwrap{position:fixed;inset:0;z-index:130;background:rgba(15,18,28,.92);display:flex;flex-direction:column}
  .fig-bar{flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:10px 14px;background:#161b2b;color:#fff;flex-wrap:wrap}
  .fig-title{font-weight:800;font-size:13.5px}
  .fig-tools{display:flex;align-items:center;gap:7px}
  .fig-sw{width:24px;height:24px;border-radius:50%;cursor:pointer;border:2px solid transparent;box-shadow:0 0 0 1px rgba(255,255,255,.3)}
  .fig-sw.on{border-color:#fff;transform:scale(1.12)}
  .fig-btn,.fig-close{border:none;cursor:pointer;font-family:inherit;font-weight:700;border-radius:9px;padding:7px 11px;font-size:14px}
  .fig-btn{background:#2c3346;color:#fff}
  .fig-close{background:var(--good);color:#fff;font-size:13px}
  .fig-stage{flex:1 1 auto;min-height:0;overflow:auto;display:flex;align-items:flex-start;justify-content:center;padding:12px}
  .fig-cw{position:relative;flex:0 0 auto}
  .fig-cw img{display:block;border-radius:8px;background:#fff;user-select:none;-webkit-user-drag:none}
  .fig-cw canvas{position:absolute;left:0;top:0;touch-action:none;cursor:crosshair}

  /* soru görseli artık köşeye sıkışmıyor: tıklanır 'büyüt & çiz' rozeti */
  .q-ref{position:relative}
  .q-ref img{cursor:default}
  .q-zoom{position:absolute;top:7px;right:7px;border:none;cursor:pointer;font-family:inherit;font-weight:800;font-size:11px;color:#fff;background:rgba(27,32,48,.78);padding:5px 9px;border-radius:999px;backdrop-filter:blur(2px)}
  .q-zoom:hover{background:var(--primary)}
  /* ===== v1.3 · TABLET MASA + VURGU RENKLERİ ===== */
  .ws{ background:
    radial-gradient(120% 80% at 50% -8%, #f4f6fc, transparent 60%),
    radial-gradient(60% 50% at 100% 110%, #e9edf7, transparent 70%),
    var(--desk); }
  .desk-content{ padding:24px 0 40px;
    background-image:radial-gradient(rgba(47,75,214,.05) 1px, transparent 1px); background-size:26px 26px;
    background-position:center; }
  /* sahne: ORTADA büyük soru (tabana kadar), AI SAĞ kenarda (kitap gibi),
     SOL kenar öğrenciye serbest; kalem tüm yüzeyde (soru üstüne de yazılır) */
  .desk-inner{ max-width:1340px; display:grid;
    grid-template-columns:minmax(40px,1fr) minmax(340px,640px) minmax(300px,400px);
    gap:24px; align-items:start; padding:0 22px; }
  .desk-inner > .thumbs{ grid-column:1; grid-row:1; justify-content:flex-start; margin:0 }
  .desk-inner > .q-ref{ grid-column:2; grid-row:1 / span 2; float:none; max-width:none; margin:0;
    position:relative; display:flex; flex-direction:column; align-items:center; }
  .desk-inner > .board-label{ grid-column:3; grid-row:1; margin:0 0 12px }
  .desk-inner > .ai-flow{ grid-column:3; grid-row:2; border-left:2px solid var(--primary-soft);
    padding-left:18px; font-size:15.5px; }
  /* soru görseli: ortada, büyük, dikeyde dolu */
  .q-ref img{ display:block; margin:0 auto; width:auto; max-width:100%;
    max-height:calc(100vh - 150px); object-fit:contain;
    border:1px solid var(--line); border-radius:14px; box-shadow:var(--shadow); background:#fff; cursor:default; }
  .q-ref .qtip{ text-align:center; margin-top:8px; font-size:12.5px }
  .sheet-tab{ position:absolute; top:-9px; left:14px; z-index:2; display:inline-flex; align-items:center; gap:6px;
    background:var(--primary); color:#fff; font:700 11px 'Space Mono',monospace;
    letter-spacing:.6px; padding:6px 12px; border-radius:999px; box-shadow:var(--shadow-sm); }
  .ai-flow .solution{ max-width:none }
  /* tablet dokunma boyutları */
  .desk-bar{ padding-top:11px; padding-bottom:11px; gap:10px }
  .desk-bar .btn.sm{ padding:11px 16px; font-size:14.5px; min-height:46px }
  .desk-bar .qbtn{ padding:10px 13px; font-size:13.5px; min-height:46px }
  .ws-back{ min-height:46px; font-size:18px; padding:0 14px }
  .ws-calm,.narr-toggle{ min-height:46px }
  .pen-bar{ padding:10px 16px; gap:12px; border-radius:18px 18px 0 0 }
  .pen-bar .tool{ width:46px; height:46px; font-size:20px }
  .pen-bar .sw{ width:30px; height:30px }
  /* portre / dar: tek sütun — soru üstte büyük, AI altta */
  @media (max-width:1024px), (orientation:portrait){
    .desk-inner{ grid-template-columns:1fr; gap:18px; padding:0 16px }
    .desk-inner > .thumbs,.desk-inner > .q-ref,.desk-inner > .board-label,.desk-inner > .ai-flow{ grid-column:1 }
    .desk-inner > .q-ref{ grid-row:auto }
    .desk-inner > .ai-flow{ border-left:none; padding-left:0 }
    .q-ref img{ max-height:64vh }
  }
  /* ===== AI vurgu renkleri (kırmızı / sarı / yeşil) ===== */
  mark.hl-k,mark.hl-s,mark.hl-y{ border-radius:5px; padding:0 4px; font-weight:600;
    -webkit-box-decoration-break:clone; box-decoration-break:clone }
  mark.hl-k{ background:var(--accent-soft); color:#b3282a; text-decoration:underline; text-decoration-style:wavy; text-decoration-thickness:1px; text-underline-offset:3px }   /* kırmızı: dikkat (dalgalı alt çizgi) */
  mark.hl-s{ background:var(--amber-soft);  color:#8a5e05 }   /* sarı: anahtar terim */
  mark.hl-y{ background:var(--good-soft);   color:#0a7350; text-decoration:underline; text-decoration-style:solid; text-decoration-thickness:1px; text-underline-offset:3px }   /* yeşil: sonuç (düz alt çizgi) */
  body.no-stt .ask-mic{ display:none !important }
  body.no-tts .narr-toggle{ display:none !important }
  </style>