/* Doç. Dr. Mehmet MUTLU — teknik çizim (blueprint) teması */
:root{
  --kagit:#0e3a63;
  --kagit-2:#0b2f52;
  --kagit-3:#0a2846;
  --cizgi:#e8f1fb;
  --soluk:#9fbad6;
  --izgara:rgba(232,241,251,.07);
  --izgara-k:rgba(232,241,251,.14);
  --vurgu:#ffcf5a;
  --kirmizi:#ff7a6b;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --sans:"IBM Plex Sans",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background-color:var(--kagit);color:var(--cizgi);font-family:var(--sans);font-size:16.5px;line-height:1.65;overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column;
  background-image:
    linear-gradient(var(--izgara-k) 1px,transparent 1px),linear-gradient(90deg,var(--izgara-k) 1px,transparent 1px),
    linear-gradient(var(--izgara) 1px,transparent 1px),linear-gradient(90deg,var(--izgara) 1px,transparent 1px);
  background-size:100px 100px,100px 100px,20px 20px,20px 20px;background-attachment:fixed}
main{flex:1}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:min(1200px,100% - 32px);margin-inline:auto}
.mono{font-family:var(--mono)}
.atla{position:absolute;left:-999px;top:8px;background:var(--vurgu);color:var(--kagit);padding:8px 14px;z-index:100;font-family:var(--mono);font-size:.8rem}
.atla:focus{left:8px}
:focus-visible{outline:2px solid var(--vurgu);outline-offset:2px}

/* ---------- üst menü ---------- */
.ust{position:sticky;top:0;z-index:40;background:rgba(11,47,82,.95);border-bottom:1px solid var(--cizgi);backdrop-filter:blur(6px)}
.bar{display:flex;align-items:stretch;justify-content:space-between;height:60px}
.kod{display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:.82rem;letter-spacing:.05em;padding-right:18px;border-right:1px solid rgba(232,241,251,.3);white-space:nowrap}
.kod svg{width:30px;height:30px;flex:none}
.kod small{display:block;font-size:.66rem;color:var(--soluk);letter-spacing:.1em}
.bar>nav{display:flex}
.menu{display:flex;list-style:none}
.menu>li{position:relative;display:flex}
.menu>li>a{display:flex;align-items:center;gap:6px;padding:0 13px;font-family:var(--mono);font-size:.74rem;letter-spacing:.07em;text-transform:uppercase;border-left:1px solid rgba(232,241,251,.15);color:var(--soluk);transition:.2s;white-space:nowrap}
.menu>li>a span{color:var(--vurgu)}
.menu>li>a:hover,.menu>li:focus-within>a{background:rgba(232,241,251,.08);color:var(--cizgi)}
.menu>li.aktif>a{color:var(--cizgi);box-shadow:inset 0 -3px 0 var(--vurgu)}
.menu .alt-menu{position:absolute;top:100%;left:0;min-width:300px;list-style:none;background:var(--kagit-2);border:1px solid var(--cizgi);border-top:0;padding:6px 0;display:none}
.menu>li:hover .alt-menu,.menu>li:focus-within .alt-menu{display:block}
.alt-menu a{display:block;padding:9px 16px;font-size:.88rem;color:var(--soluk)}
.alt-menu a:hover{background:rgba(255,207,90,.1);color:var(--cizgi)}
.alt-menu .ic a{padding-left:34px;font-size:.82rem}
.alt-menu .ic a::before{content:"└ ";font-family:var(--mono);color:rgba(159,186,214,.6)}
.mbtn{display:none;background:none;border:1px solid var(--cizgi);color:var(--cizgi);font-family:var(--mono);font-size:.8rem;padding:0 14px;margin:10px 0;cursor:pointer}

/* ---------- hero (ana sayfa) ---------- */
.hero{padding:56px 0 80px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.etiket{font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;color:var(--vurgu);text-transform:uppercase}
.hero h1{font-weight:300;font-size:clamp(1.3rem,3vw,2.3rem);line-height:1;margin:16px 0 20px;letter-spacing:-.02em}
.hero h1 b{font-weight:600;display:block;font-size:2em;margin-top:6px}
.hero p{color:var(--soluk);max-width:500px}
.cizim svg{width:100%;height:auto}
.cizim .ciz{stroke-dasharray:100;stroke-dashoffset:100;animation:ciz 3.2s ease forwards}
.cizim .ciz.g1{animation-delay:.3s}.cizim .ciz.g2{animation-delay:.9s}.cizim .ciz.g3{animation-delay:1.5s}
@keyframes ciz{to{stroke-dashoffset:0}}
@media (prefers-reduced-motion:reduce){.cizim .ciz{animation:none;stroke-dashoffset:0}}

/* antet (pafta künyesi) */
.antet{display:grid;grid-template-columns:120px 1fr 1fr;border:1.5px solid var(--cizgi);margin-top:34px;font-size:.88rem;background:var(--kagit-2)}
.antet>div{padding:10px 14px;border-right:1px solid rgba(232,241,251,.35);min-width:0}
.antet>div:last-child{border-right:0}
.antet .logo{padding:0;grid-row:span 2;border-right:1.5px solid var(--cizgi);background:#fff;display:grid;place-items:center}
.antet .logo img{width:100%;height:100%;object-fit:contain}
.antet small{display:block;font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;color:var(--soluk);text-transform:uppercase}
.antet .alt{border-top:1px solid rgba(232,241,251,.35)}
.antet .orcid{font-family:var(--mono);font-size:.74rem;white-space:nowrap}

/* ---------- alt sayfa başlığı ---------- */
.sayfa-bas{padding:46px 0 0}
.yol{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--soluk);display:flex;flex-wrap:wrap;gap:6px 8px;margin-bottom:26px}
.yol a{color:var(--soluk);border-bottom:1px dotted rgba(159,186,214,.5)}
.yol a:hover{color:var(--vurgu);border-color:var(--vurgu)}
.yol i{font-style:normal;opacity:.5}
.yol b{color:var(--cizgi);font-weight:500}

/* ---------- bölümler ---------- */
section{padding:80px 0;border-top:1px dashed rgba(232,241,251,.25)}
section.ilk{border-top:0;padding-top:20px}
.pafta{display:grid;grid-template-columns:auto 1fr auto;gap:20px;align-items:end;margin-bottom:40px;padding-bottom:14px;border-bottom:1.5px solid var(--cizgi)}
.pafta .no{font-family:var(--mono);font-size:3rem;line-height:.9;color:var(--vurgu);font-weight:500}
.pafta h1,.pafta h2{font-weight:500;font-size:clamp(1.6rem,3.4vw,2.4rem);line-height:1.15}
.pafta .olcek{font-family:var(--mono);font-size:.72rem;color:var(--soluk);text-align:right;text-transform:uppercase;letter-spacing:.1em;white-space:nowrap}
.alt-baslik{font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--vurgu);margin:46px 0 16px;display:flex;align-items:center;gap:12px}
.alt-baslik::after{content:"";flex:1;border-top:1px solid rgba(232,241,251,.3)}
.giris{color:#d3e2f2;max-width:760px;margin-bottom:28px}

/* köşe işaretli kutu */
.kutu{position:relative;padding:26px;border:1px solid rgba(232,241,251,.35);background:rgba(11,47,82,.6)}
.kutu::before,.kutu::after{content:"";position:absolute;width:14px;height:14px;border:2px solid var(--vurgu)}
.kutu::before{top:-5px;left:-5px;border-right:0;border-bottom:0}
.kutu::after{bottom:-5px;right:-5px;border-left:0;border-top:0}
a.kutu{display:block;transition:.2s}
a.kutu:hover{background:rgba(255,207,90,.07);border-color:var(--vurgu)}

.izgara-2,.izgara-3{display:grid;gap:24px}
.izgara-2{grid-template-columns:repeat(2,1fr)}
.izgara-2.basta{align-items:start}
.dizin-sutunlar{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.dizin-sutunlar>div{display:grid;gap:24px}
.izgara-3{grid-template-columns:repeat(3,1fr)}

/* pafta dizini kartları */
.dizin .ref{font-family:var(--mono);font-size:.72rem;color:var(--vurgu);letter-spacing:.1em}
.dizin h3{font-weight:500;font-size:1.2rem;margin:6px 0 10px}
.dizin h3 a:hover{color:var(--vurgu)}
.dizin ul{list-style:none;font-size:.92rem}
.dizin li a{display:flex;gap:8px;padding:5px 0;color:var(--soluk);border-bottom:1px dotted rgba(232,241,251,.2)}
.dizin li a::before{content:"→";font-family:var(--mono);color:var(--vurgu)}
.dizin li a:hover{color:var(--cizgi)}
.dizin li.ic a{padding-left:20px}
.dizin li.ic a::before{content:"└";color:rgba(159,186,214,.6)}
.dizin p{color:var(--soluk);font-size:.92rem}

/* kimlik / özellik listesi */
.spec{font-family:var(--mono);font-size:.84rem}
.spec div{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-bottom:1px dotted rgba(232,241,251,.3)}
.spec div>span:first-child{color:var(--soluk);flex:none}
.spec div>*:last-child{text-align:right;overflow-wrap:anywhere}
.spec a{color:var(--vurgu)}

/* liste satırları (ders/kategori bağlantıları) */
.satirlar{border-top:1.5px solid var(--cizgi)}
.satirlar a{display:grid;grid-template-columns:90px 1fr auto;gap:18px;align-items:center;padding:18px 6px;border-bottom:1px solid rgba(232,241,251,.2);transition:.2s}
.satirlar a:hover{background:rgba(255,207,90,.07)}
.satirlar .ref{font-family:var(--mono);font-size:.78rem;color:var(--vurgu)}
.satirlar b{font-weight:500;font-size:1.08rem;display:block}
.satirlar small{color:var(--soluk);font-size:.85rem}
.satirlar .ok{font-family:var(--mono);color:var(--vurgu)}
.durum{font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;padding:2px 7px;border:1px solid rgba(159,186,214,.5);color:var(--soluk);white-space:nowrap}
.durum.hazir{border-color:var(--vurgu);color:var(--vurgu)}

/* boş / hazırlanıyor durumu */
.bos{display:grid;grid-template-columns:150px 1fr;gap:30px;align-items:center}
.bos svg{width:150px;height:150px}
.bos h2,.bos h3{font-weight:500;font-size:1.3rem;margin-bottom:6px}
.bos p{color:var(--soluk);margin-bottom:12px}
.bos .baglar{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}

.btn{display:inline-flex;gap:10px;align-items:center;font-family:var(--mono);font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;padding:11px 18px;border:1.5px solid var(--vurgu);color:var(--vurgu);transition:.2s}
.btn:hover{background:var(--vurgu);color:var(--kagit)}
.btn.dolu{background:var(--vurgu);color:var(--kagit)}
.btn.dolu:hover{background:transparent;color:var(--vurgu)}
.btn.ince{border-color:rgba(232,241,251,.5);color:var(--cizgi);font-size:.74rem;padding:8px 14px}
.btn.ince:hover{background:var(--cizgi);color:var(--kagit)}

/* konu ağacı (Yapı Bilgisi II) */
.agac{list-style:none;counter-reset:k}
.agac>li{counter-increment:k;padding:14px 0;border-bottom:1px dotted rgba(232,241,251,.3)}
.agac>li>span{display:flex;gap:14px;font-weight:500;font-size:1.05rem}
.agac>li>span a{color:inherit;text-decoration:none;border-bottom:1px solid var(--vurgu)}
.agac>li>span a:hover{color:var(--vurgu)}
.agac>li>span::before{content:counter(k,decimal-leading-zero);font-family:var(--mono);color:var(--vurgu);font-size:.85rem;padding-top:3px}
.agac ul{list-style:none;margin:10px 0 0 34px;border-left:1px solid rgba(232,241,251,.3)}
.agac ul li{padding:8px 0 8px 18px;position:relative}
.agac ul li::before{content:"";position:absolute;left:0;top:20px;width:12px;border-top:1px solid rgba(232,241,251,.3)}
.agac ul ul{margin-left:6px}
.agac .yontem{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;color:var(--soluk)}
.cip{font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;padding:2px 8px;border:1px solid rgba(232,241,251,.4);color:var(--cizgi)}
a.cip{text-decoration:none;border-color:var(--vurgu);color:var(--vurgu)}
a.cip:hover{background:var(--vurgu);color:var(--kagit)}

/* yayın listeleri */
.yayinlar{list-style:none}
.yayinlar li{display:grid;grid-template-columns:70px 1fr;gap:18px;padding:18px 6px;border-bottom:1px solid rgba(232,241,251,.2)}
.yayinlar .yil{font-family:var(--mono);font-size:.85rem;color:var(--vurgu);padding-top:3px}
.yayinlar .ad{display:block;font-weight:500;font-size:1.05rem;line-height:1.4}
.yayinlar .ad a{color:inherit;text-decoration:none;border-bottom:1px solid var(--vurgu)}
.yayinlar .ad a:hover{color:var(--vurgu)}
.yayinlar .ad a::after{content:" ↗";font-family:var(--mono);font-size:.8em;color:var(--vurgu)}
.yayinlar .yazar,.yayinlar .yer{display:block;color:var(--soluk);font-size:.88rem;margin-top:4px}
.yayinlar .yazar b{color:var(--cizgi);font-weight:500}
.yayinlar .etiketler{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
@media (max-width:600px){.yayinlar li{grid-template-columns:1fr;gap:4px}}

.duyuru-kutu{display:flex;gap:24px;align-items:center;flex-wrap:wrap;justify-content:space-between}

/* bağlantı lejantı */
.lejant{display:grid;grid-template-columns:repeat(3,1fr);border:1.5px solid var(--cizgi)}
.lejant a{display:grid;grid-template-columns:48px 1fr auto;gap:14px;align-items:center;padding:16px 18px;border-right:1px solid rgba(232,241,251,.25);border-bottom:1px solid rgba(232,241,251,.25);transition:.2s;min-width:0}
.lejant a:hover{background:rgba(255,207,90,.1)}
.lejant .sembol{width:48px;height:48px;border:1.5px solid var(--cizgi);display:grid;place-items:center;font-family:var(--mono);font-weight:600;font-size:.82rem;border-radius:50%}
.lejant b{font-weight:500;display:block}
.lejant small{font-family:var(--mono);font-size:.72rem;color:var(--soluk);overflow-wrap:anywhere}
.lejant .ok{font-family:var(--mono);color:var(--vurgu)}

/* videolar */
.videolar{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.videolar iframe{display:block;width:100%;aspect-ratio:16/9;border:0;background:#000}
.videolar h3{font-weight:500;font-size:1.05rem;margin:12px 0 10px;line-height:1.35}
.videolar .ref{font-family:var(--mono);font-size:.7rem;color:var(--vurgu);letter-spacing:.1em;display:block;margin-top:12px}

/* şekil (fotoğraf) */
.sekil{margin:0}
.sekil .cerceve{position:relative;border:1.5px solid var(--cizgi);padding:10px;background:var(--kagit-2)}
.sekil img{width:100%;aspect-ratio:902/462;object-fit:cover;filter:grayscale(1) contrast(1.1);mix-blend-mode:screen;opacity:.85}
.sekil .mavi{background:#1b5a94}
.sekil figcaption{display:flex;justify-content:space-between;gap:12px;font-family:var(--mono);font-size:.72rem;color:var(--soluk);margin-top:10px;letter-spacing:.06em;flex-wrap:wrap}
.sekil figcaption b{color:var(--vurgu);font-weight:500}

/* iletişim */
.il dl{display:grid;gap:18px}
.il dt{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--vurgu)}
.il dd{font-size:1.05rem;overflow-wrap:anywhere}
.il dd a:hover{text-decoration:underline}
.harita{border:1.5px solid var(--cizgi);min-height:360px;display:flex}
.harita iframe{width:100%;min-height:360px;border:0}
.gizli-alan{position:absolute;left:-9999px}
.form-izgara{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:22px}
.form-izgara label{display:block;font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--vurgu)}
.form-izgara .genis{grid-column:1/-1}
.form-izgara input,.form-izgara textarea{display:block;width:100%;margin-top:8px;padding:11px 12px;background:var(--kagit-3);border:1px solid rgba(232,241,251,.45);color:var(--cizgi);font-family:var(--sans);font-size:1rem;letter-spacing:normal;text-transform:none;border-radius:0}
.form-izgara textarea{resize:vertical;min-height:150px}
.form-izgara input:focus,.form-izgara textarea:focus{border-color:var(--vurgu)}
.iletisim-formu .btn{cursor:pointer}
.iletisim-formu .btn:disabled{opacity:.6;cursor:wait}
.form-durum{margin-top:14px}
.form-durum a{color:var(--vurgu);text-decoration:underline}
@media (max-width:640px){.form-izgara{grid-template-columns:1fr}}

/* ---------- alt bilgi ---------- */
.alt-bilgi{border-top:1.5px solid var(--cizgi);background:var(--kagit-3);margin-top:60px}
.alt-izgara{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:30px;padding:46px 0 30px}
.alt-izgara h4{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--vurgu);font-weight:500;margin-bottom:12px}
.alt-izgara ul{list-style:none;font-size:.88rem}
.alt-izgara li a{display:block;padding:3px 0;color:var(--soluk)}
.alt-izgara li a:hover{color:var(--cizgi)}
.alt-izgara li.ic a{padding-left:14px}
.alt-izgara p{color:var(--soluk);font-size:.88rem}
.alt-izgara p a:hover{color:var(--cizgi)}
.alt-cizgi{border-top:1px solid rgba(232,241,251,.2);font-family:var(--mono);font-size:.72rem;color:var(--soluk)}
.alt-cizgi .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:18px 0}

.gor{opacity:0;transform:translateY(18px);transition:opacity .6s,transform .6s}
.gor.tamam{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.gor{opacity:1;transform:none;transition:none}}

/* ---------- duyarlı ---------- */
@media (max-width:1100px){
  .ust{backdrop-filter:none} /* backdrop-filter, fixed menüyü başlığın içine hapseder */
  .menu{position:fixed;top:60px;left:0;right:0;bottom:0;flex-direction:column;background:var(--kagit-2);border-top:1px solid var(--cizgi);display:none;overflow-y:auto;padding-bottom:30px}
  .menu.acik{display:flex}
  .menu>li{flex-direction:column}
  .menu>li>a{padding:14px 16px;border-left:0;border-top:1px solid rgba(232,241,251,.15)}
  .menu .alt-menu{position:static;display:block;border:0;padding:0 0 8px;min-width:0;background:transparent}
  .alt-menu a{padding:7px 16px 7px 40px}
  .alt-menu .ic a{padding-left:58px}
  .mbtn{display:block;order:2}
}
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr}
  .izgara-3,.lejant,.dizin-sutunlar{grid-template-columns:1fr 1fr}
  .alt-izgara{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  section{padding:56px 0}
  .izgara-2,.izgara-3,.lejant,.videolar,.alt-izgara,.dizin-sutunlar{grid-template-columns:1fr}
  .pafta{grid-template-columns:auto 1fr}
  .pafta .olcek{display:none}
  .pafta .no{font-size:2.1rem}
  .antet{grid-template-columns:90px 1fr}
  .antet>div:nth-child(3){display:none}
  .kod{font-size:.74rem;padding-right:10px}
  .satirlar a{grid-template-columns:56px 1fr auto;gap:12px}
  .bos{grid-template-columns:1fr}
  .bos svg{width:110px;height:110px}
  .agac ul{margin-left:14px}
}