/* ==========================================================================
   FORMULO · tanıtım sayfası sahnesi (index.html #formulo, js/acadex-formulo.js), 08.11.2026
   "Bir formülün dersi": kareli defter kâğıdı üstünde ahşap çerçeveli yeşil tahta.
   Kaydırdıkça Profesör Acadia formülü yazar, şeklini çizer, açıyı kaydırmanla değiştirir,
   ara soru sorar ve sohbette ipucu verir. Hareket azaltılınca sahne sabitlenmez. Önek fmu-.
   ========================================================================== */
@font-face{font-family:'LM Roman';font-display:swap;font-style:normal;src:url(../formulo/assets/fonts/lm-regular.woff) format('woff')}
@font-face{font-family:'LM Roman';font-display:swap;font-style:italic;src:url(../formulo/assets/fonts/lm-italic.woff) format('woff')}
.fmu{--ink:#1E2A44;--kagit:#FAF7F0;--tahta:#183A30;--teb:#F1F6F2;--sari:#FFD86B;--cam:#7FE3FF;--tur:#FF9F5A;--math:'LM Roman','Cambria Math','Times New Roman',serif;position:relative;color:var(--ink);font-family:'Instrument Sans',system-ui,sans-serif;
  background-color:var(--kagit);background-image:linear-gradient(rgba(30,42,68,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(30,42,68,.055) 1px,transparent 1px);background-size:24px 24px}
.fmu,.fmu *,.fmu *::before,.fmu *::after{box-sizing:border-box}
.fmu-intro{max-width:1100px;margin:0 auto;padding:100px 28px 30px;display:grid;gap:14px;justify-items:center;text-align:center}
.fmu-eyb{display:inline-flex;align-items:center;gap:10px;font:500 13px 'JetBrains Mono',monospace;letter-spacing:.08em;text-transform:uppercase;color:#4A5470}
.fmu-eyb b{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--sari);color:var(--ink);font:italic 18px var(--math);text-transform:none}
.fmu-h{margin:0;font:800 clamp(38px,6vw,76px)/.98 'Bricolage Grotesque',sans-serif;letter-spacing:-.035em;max-width:16ch}
.fmu-h u{text-decoration:none;background:linear-gradient(transparent 60%,#FFE36E 60%,#FFE36E 90%,transparent 90%)}
.fmu-lead{margin:0;max-width:640px;font-size:clamp(17px,1.6vw,20px);line-height:1.5;color:#3F4A68}
.fmu-not{font:600 26px/1 Caveat,cursive;color:#0E6F7C;transform:rotate(-2deg)}

/* iz ve sahne */
.fmu-track{position:relative;height:calc(5 * 85vh + 40vh)}
.fmu-stage{position:sticky;top:0;height:100vh;min-height:600px;display:grid;grid-template-columns:minmax(240px,320px) minmax(0,1fr);grid-template-rows:1fr auto;gap:18px 34px;align-items:center;max-width:1260px;margin:0 auto;padding:84px 28px 26px}
/* ders planı */
.fmu-plan{list-style:none;margin:0;padding:0;display:grid;gap:8px;counter-reset:fmu}
.fmu-plan li{padding:10px 14px;border-left:3px solid transparent;border-radius:0 10px 10px 0;transition:background .35s,border-color .35s,opacity .35s;opacity:.55}
.fmu-plan li.fmu-gecti{opacity:.8}
.fmu-plan li.fmu-su{opacity:1;border-left-color:var(--c);background:#fff;box-shadow:0 10px 22px -18px rgba(30,42,68,.6)}
.fmu-plan button{all:unset;display:flex;align-items:center;gap:10px;cursor:pointer;min-height:36px}
.fmu-plan button:focus-visible{outline:2px solid #0E6F7C;outline-offset:4px;border-radius:4px}
.fmu-plan b{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;border:2px solid var(--c);font:700 13px 'JetBrains Mono',monospace;color:var(--ink)}
.fmu-plan li.fmu-su b,.fmu-plan li.fmu-gecti b{background:var(--c);color:#fff}
.fmu-plan span{font:800 22px 'Bricolage Grotesque',sans-serif;letter-spacing:-.02em}
.fmu-plan p{margin:4px 0 0 38px;font-size:15px;line-height:1.45;color:#4A5470;max-height:0;overflow:hidden;transition:max-height .45s ease}
.fmu-plan li.fmu-su p{max-height:90px}
/* tahta */
.fmu-tahta{position:relative;height:min(560px,calc(100vh - 150px));min-height:420px;border-radius:14px;overflow:hidden;color:var(--teb);
  background:radial-gradient(120% 90% at 30% 10%,#21483C,#173529 72%);box-shadow:inset 0 0 0 12px #7A5534,inset 0 0 0 14px rgba(0,0,0,.28),0 26px 40px -28px rgba(30,42,68,.6)}
.fmu-tahta::after{content:"";position:absolute;left:14%;right:14%;bottom:12px;height:7px;border-radius:3px;background:#8C6440}
.fmu-f{position:absolute;left:40px;top:34px;font:clamp(30px,3.4vw,46px)/1.4 var(--math);white-space:nowrap;clip-path:inset(-30px 100% -30px 0)}
.fmu-f i{font-style:italic;transition:color .4s,background .4s;border-radius:4px;padding:0 .05em}
.fmu-f sup,.fmu-f sub{font-size:.6em;line-height:0}
.fmu-fr{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;margin:0 .14em;font-size:.86em;line-height:1.25}
.fmu-fr>span{align-self:stretch;text-align:center;padding:0 .2em}
.fmu-fr>span:first-child{border-bottom:2px solid currentColor}
.fmu.fmu-v .fmu-tv{color:var(--sari)}.fmu.fmu-t .fmu-tt{color:var(--cam)}.fmu.fmu-g .fmu-tg{color:var(--tur)}
.fmu-sekil{position:absolute;left:30px;right:30px;top:118px;width:calc(100% - 60px);height:auto;max-height:calc(100% - 250px);overflow:visible;opacity:0;transition:opacity .5s}
.fmu[data-a="1"] .fmu-sekil,.fmu[data-a="2"] .fmu-sekil{opacity:1}
.fmu[data-a="3"] .fmu-sekil,.fmu[data-a="4"] .fmu-sekil{opacity:.25}
.fmu-zemin{stroke:rgba(241,246,242,.45);stroke-width:1.6}
.fmu-iz{fill:none;stroke:var(--sari);stroke-width:2.6;stroke-linecap:round;stroke-dasharray:5 6}
.fmu-ok{stroke:var(--cam);stroke-width:3;stroke-linecap:round}
.fmu-acy{fill:none;stroke:var(--cam);stroke-width:1.6}
.fmu-th-et{fill:var(--cam);font:italic 15px var(--math)}
.fmu-olcu{fill:none;stroke:rgba(241,246,242,.7);stroke-width:1.4}
.fmu-gok{stroke:var(--tur);stroke-width:2.6;marker-end:none}
.fmu-g-et{fill:var(--tur);font:italic 17px var(--math)}
.fmu-top{fill:var(--tur);stroke:var(--teb);stroke-width:1.5}
.fmu-kay{position:absolute;left:40px;right:40px;bottom:132px;display:grid;grid-template-columns:24px minmax(0,1fr) 54px 24px auto;align-items:center;gap:12px;opacity:0;transform:translateY(8px);transition:opacity .45s,transform .45s}
.fmu[data-a="2"] .fmu-kay{opacity:1;transform:none}
.fmu-sem{font:italic 24px var(--math)}
.fmu-ray{position:relative;height:12px;border-radius:3px;background:repeating-linear-gradient(90deg,rgba(241,246,242,.4) 0 1px,transparent 1px 10%) 0 0/100% 6px no-repeat,rgba(241,246,242,.08)}
.fmu-ray i{position:absolute;left:0;top:0;bottom:0;width:50%;border-radius:3px;background:var(--cam)}
.fmu-ray i::after{content:"";position:absolute;right:-9px;top:-6px;width:18px;height:24px;border-radius:5px;background:var(--teb);box-shadow:0 2px 0 rgba(0,0,0,.3)}
.fmu-kay b{font:500 16px 'JetBrains Mono',monospace;color:var(--cam)}
.fmu-kay .fmu-r{font:400 30px var(--math);color:var(--sari);white-space:nowrap}
/* ara soru ve sohbet */
.fmu-soru,.fmu-sohbet{position:absolute;left:50%;top:132px;width:min(420px,calc(100% - 60px));transform:translate(-50%,14px);opacity:0;transition:opacity .45s,transform .45s;pointer-events:none}
.fmu[data-a="3"] .fmu-soru,.fmu[data-a="4"] .fmu-sohbet{opacity:1;transform:translate(-50%,0)}
.fmu-soru{padding:16px 18px;border-radius:8px;background:var(--kagit);color:var(--ink);box-shadow:0 14px 26px -12px rgba(0,0,0,.55);transform:translate(-50%,14px) rotate(-1deg)}
.fmu[data-a="3"] .fmu-soru{transform:translate(-50%,0) rotate(-1deg)}
.fmu-soru small{display:inline-block;padding:2px 9px;border-radius:999px;background:#FFE36E;font:500 11px 'JetBrains Mono',monospace;letter-spacing:.06em;text-transform:uppercase}
.fmu-soru p{margin:8px 0 12px;font-size:17px;font-weight:600}
.fmu-sik{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.fmu-sik span{padding:8px 0;text-align:center;border:1.5px solid rgba(30,42,68,.2);border-radius:8px;font-weight:600;transition:background .35s,border-color .35s,color .35s}
.fmu.fmu-dogru .fmu-dog{background:rgba(30,122,76,.14);border-color:#1E7A4C;color:#1E7A4C}
.fmu.fmu-dogru .fmu-dog::after{content:" ✓"}
.fmu-sohbet{display:grid;gap:12px}
.fmu-sohbet p{margin:0;padding:11px 15px;border-radius:14px;font-size:16px;line-height:1.4}
.fmu-sen{justify-self:end;max-width:85%;background:var(--kagit);color:var(--ink);font-weight:600;border-radius:14px 4px 14px 14px!important}
.fmu-ac{justify-self:start;max-width:92%;border:1.5px dashed rgba(241,246,242,.55);border-radius:4px 14px 14px 14px!important;opacity:0;transform:translateY(8px);transition:opacity .4s,transform .4s}
.fmu.fmu-cvp .fmu-ac{opacity:1;transform:none}
/* Profesör Acadia */
.fmu-alt{position:absolute;left:26px;right:26px;bottom:24px;display:flex;align-items:flex-end;gap:10px}
.fmu-acd{flex:none;width:96px;height:100px}
.fmu-acd svg.acd{width:100%;height:100%;overflow:visible}
.fmu-balon{position:relative;margin:0 0 14px;padding:10px 14px;max-width:520px;border-radius:12px;background:var(--kagit);color:var(--ink);font:600 21px/1.25 Caveat,cursive;box-shadow:0 8px 18px -10px rgba(0,0,0,.5)}
.fmu-balon::before{content:"";position:absolute;left:-8px;bottom:16px;border:8px solid transparent;border-right-color:var(--kagit);border-left:0}
.fmu-balon.fmu-yeni{animation:fmuBalon .35s cubic-bezier(.2,.9,.3,1.3)}
@keyframes fmuBalon{from{transform:scale(.94) translateY(6px);opacity:.4}}
.fmu-cubuk{grid-column:1/-1;height:6px;border-radius:3px;background:rgba(30,42,68,.1);overflow:hidden}
.fmu-cubuk i{display:block;height:100%;width:calc(var(--p,0) * 100%);background:linear-gradient(90deg,#D99A00,#2A9BB5,#2FA36B,#E07035,#C9529E);border-radius:3px}
/* son */
.fmu-son{max-width:980px;margin:0 auto;padding:40px 28px 110px;display:grid;justify-items:center;gap:14px;text-align:center}
.fmu-dersler{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:8px}
.fmu-dersler li{padding:6px 12px;border:1.5px solid var(--c);border-top-width:5px;border-radius:6px;background:#fff;font-weight:600;font-size:14.5px}
.fmu-son h3{margin:6px 0 0;font:800 clamp(26px,3vw,36px)/1.1 'Bricolage Grotesque',sans-serif;letter-spacing:-.02em}
.fmu-btn{display:inline-flex;align-items:center;gap:10px;min-height:52px;padding:0 24px;border-radius:999px;background:var(--ink);color:#fff;font-weight:700;font-size:17px;text-decoration:none;transition:transform .2s}
.fmu-btn svg{width:20px;height:20px}
.fmu-btn:hover{transform:translateY(-2px)}
.fmu-son small{font:500 13px 'JetBrains Mono',monospace;color:#5B6787}

@media (max-width:900px){
  .fmu-intro{padding:80px 20px 20px}
  .fmu-stage{grid-template-columns:minmax(0,1fr);grid-template-rows:auto 1fr auto;gap:10px;padding:70px 14px 16px;min-height:560px}
  .fmu-plan{grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);gap:4px}
  .fmu-plan li{padding:6px 4px;border-left:0;border-bottom:3px solid transparent;border-radius:8px 8px 0 0;text-align:center}
  .fmu-plan li.fmu-su{border-bottom-color:var(--c)}
  .fmu-plan button{flex-direction:column;gap:2px;justify-content:center;width:100%}
  .fmu-plan b{width:24px;height:24px;font-size:11px}
  .fmu-plan span{font-size:12.5px}
  .fmu-plan p{display:none}
  .fmu-tahta{height:calc(100svh - 190px);min-height:440px}
  .fmu-f{left:22px;top:24px;font-size:28px}
  .fmu-sekil{left:14px;right:14px;width:calc(100% - 28px);top:96px;max-height:none}
  .fmu-kay{left:22px;right:22px;bottom:118px;grid-template-columns:20px minmax(0,1fr) 44px;row-gap:6px}
  .fmu-kay .fmu-sem-r{grid-row:2;grid-column:1}.fmu-kay .fmu-r{grid-row:2;grid-column:2/-1}
  .fmu-soru,.fmu-sohbet{top:90px}
  .fmu-alt{left:14px;right:14px;bottom:20px}
  .fmu-acd{width:72px;height:76px}
  .fmu-balon{font-size:18px}
}
@media (prefers-reduced-motion:reduce){
  .fmu-track{height:auto}
  .fmu-stage{position:relative;height:auto;min-height:0}
  .fmu-tahta{height:auto;min-height:0;padding:28px 26px 26px;display:grid;gap:16px}
  .fmu-f,.fmu-sekil,.fmu-kay,.fmu-soru,.fmu-sohbet,.fmu-alt{position:relative;left:auto;right:auto;top:auto;bottom:auto;transform:none!important;opacity:1!important;clip-path:none!important;width:auto;max-height:none}
  .fmu-ac{opacity:1;transform:none}
  .fmu-plan p{max-height:none}
  .fmu-cubuk{display:none}
}
/* site rehberi (js/acadia-rehber.js) bu bölümde kenara çekilir; tahtadaki Profesör Acadia anlatır */
.acd-guide.fmu-sakla{opacity:0!important;pointer-events:none}
@media (min-width:1201px){.fmu-stage{padding-right:150px}}
@media (max-width:900px){.fmu-tahta{height:min(calc(100svh - 190px),560px)}.fmu-sohbet{top:150px}}