:root{
  --bg:#f4f0e6; --paper:#fffdf7; --ink:#1d1b16; --muted:#57524a; --line:#ddd5c3; --line2:#c4baa3;
  --accent:#d9512c; --mark:#f6d860; --bad:#b8321f; --warnbg:#fbe9c4; --shadow:4px 4px 0 var(--ink);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#17160f; --paper:#211f18; --ink:#efe9da; --muted:#bdb6a5; --line:#36332a; --line2:#4b473b;
    --accent:#ee6f47; --mark:#7a5f10; --bad:#f07a62; --warnbg:#3a2f12;
  }
}
:root[data-theme="dark"]{
  --bg:#17160f; --paper:#211f18; --ink:#efe9da; --muted:#bdb6a5; --line:#36332a; --line2:#4b473b;
  --accent:#ee6f47; --mark:#7a5f10; --bad:#f07a62; --warnbg:#3a2f12;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Instrument Sans',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;overflow-x:hidden;transition:background .3s,color .3s}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3{font-family:'Fraunces',Georgia,serif;font-weight:700;letter-spacing:-.015em}
.wrap{max-width:1160px;margin:0 auto;padding:0 16px}
section,[id]{scroll-margin-top:84px}
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--accent);z-index:100}
@keyframes up{from{opacity:0;transform:translateY(14px)}}

/* Header */
header{position:sticky;top:0;z-index:50;background:var(--bg);border-bottom:2px solid var(--ink)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.logo{display:flex;align-items:center;gap:10px;font-family:'Fraunces',serif;font-weight:700;font-size:1.35rem}
.logo b{font-weight:500;font-style:italic}
.logo-mk{width:38px;height:38px;flex:none;transform:rotate(-4deg);transition:transform .35s cubic-bezier(.3,1.6,.5,1)}
.logo:hover .logo-mk{transform:rotate(6deg) scale(1.06)}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{font-weight:600;font-size:.95rem;position:relative}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-3px;height:2px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.nav-links a:hover::after{transform:scaleX(1)}
.icon-btn{width:38px;height:38px;border:2px solid var(--ink);background:var(--paper);cursor:pointer;display:grid;place-items:center;font-size:1.05rem;box-shadow:2px 2px 0 var(--ink);transition:transform .15s,box-shadow .15s}
.icon-btn:hover{transform:translate(-1px,-1px);box-shadow:3px 3px 0 var(--ink)}
.icon-btn:active{transform:translate(2px,2px);box-shadow:0 0 0 var(--ink)}
@media(max-width:640px){.nav-links{gap:14px}.nav-links .hide-sm{display:none}.logo{font-size:1.2rem}}

/* Giriş alanı */
.hero-band{position:relative;isolation:isolate;border-bottom:2px solid var(--ink);overflow:hidden}
.hero-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none}
.hero{padding:60px 16px 48px;display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:center}
.kicker{font-family:'JetBrains Mono',monospace;font-size:.82rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;animation:up .6s both}
.hero h1{font-size:clamp(2.1rem,5vw,4rem);line-height:1.08;margin:16px 0 18px;animation:up .6s .08s both}
.hl{position:relative;display:inline-block;color:var(--accent);font-style:italic}
.scribble{position:absolute;left:-2%;bottom:-.1em;width:104%;height:.3em;overflow:visible}
.scribble path{fill:none;stroke:var(--ink);stroke-width:3;stroke-linecap:round;stroke-dasharray:340;stroke-dashoffset:340;animation:draw 1s .5s forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.lead{font-size:clamp(1rem,2vw,1.15rem);max-width:580px;margin-bottom:26px;animation:up .6s .16s both}
.lead span{display:block;color:var(--muted)}
.search{max-width:600px;position:relative;animation:up .6s .24s both;z-index:5}
.search input{width:100%;padding:16px 60px 16px 18px;border:2px solid var(--ink);border-radius:0;background:var(--paper);font-size:1.05rem;box-shadow:var(--shadow);outline:none;transition:box-shadow .15s,transform .15s;-webkit-appearance:none}
.search input:focus{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--accent)}
.search kbd{position:absolute;right:14px;top:27px;transform:translateY(-50%);font-family:'JetBrains Mono',monospace;font-size:.75rem;padding:2px 8px;border:1.5px solid var(--muted);color:var(--muted)}
.sugg{position:absolute;left:0;right:0;top:calc(100% + 8px);background:var(--paper);border:2px solid var(--ink);box-shadow:var(--shadow);display:none}
.sugg.open{display:block}
.sugg a{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:11px 14px;border-bottom:1px solid var(--line)}
.sugg a:last-child{border-bottom:0}
.sugg a:hover,.sugg a.act{background:var(--bg)}
.sugg small{color:var(--muted);font-size:.8rem;white-space:nowrap}
.sugg p{padding:12px 14px;color:var(--muted)}
.sugg p a{display:inline;padding:0;border:0;text-decoration:underline}
.quick{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;align-items:center;animation:up .6s .3s both}
.quick>span{font-size:.88rem;color:var(--muted);margin-right:2px}
.quick a{padding:7px 13px;border:1.5px solid var(--ink);background:var(--paper);font-weight:600;font-size:.9rem;transition:background .15s,color .15s}
.quick a:hover{background:var(--ink);color:var(--bg)}
.stats{display:flex;flex-wrap:wrap;margin-top:36px;max-width:640px;border-top:2px solid var(--ink);border-bottom:2px solid var(--ink);animation:up .6s .36s both}
.stat{flex:1 1 150px;padding:12px 16px 10px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-family:'JetBrains Mono',monospace;font-size:1.5rem;font-weight:600;line-height:1.25}
.stat span{color:var(--muted);font-size:.88rem}
.hero-art{width:320px;animation:up .8s .3s both}
.hero-art svg{display:block;width:100%;height:auto;overflow:visible}
.orbit{stroke-dasharray:4 7;animation:dash 6s linear infinite}
@keyframes dash{to{stroke-dashoffset:-110}}
.globe-line{stroke-dasharray:630;stroke-dashoffset:630;animation:draw 1.4s .4s forwards}
.spark{transform-box:fill-box;transform-origin:center;animation:spin 9s linear infinite}
.spark.s2{animation-duration:13s;animation-direction:reverse}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:960px){.hero{grid-template-columns:1fr;gap:6px;padding-top:40px}.hero-art{width:170px;margin:0 auto;order:2}}
@media(max-width:640px){.hero h1{font-size:2rem}.stats{margin-top:26px}.stat b{font-size:1.25rem}.search kbd{display:none}.search input{padding-right:18px}}

/* Bölümler */
section{padding:48px 0 8px}
.sec-head{display:flex;align-items:end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px;padding-bottom:12px;border-bottom:2px solid var(--ink)}
.sec-no{display:block;font-family:'JetBrains Mono',monospace;color:var(--accent);font-size:.9rem;margin-bottom:2px}
.sec-head h2{font-size:clamp(1.8rem,4vw,2.5rem);line-height:1.1}
.sec-head p{color:var(--muted);max-width:420px}

/* Kartlar */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.card{display:block;position:relative;background:var(--paper);border:1.5px solid var(--line2);padding:16px 18px 46px;transition:transform .18s,box-shadow .18s,border-color .18s}
.card:hover,.card:focus-visible{border-color:var(--ink);transform:translate(-3px,-3px);box-shadow:6px 6px 0 var(--c,var(--ink));outline:none}
.card.rv{opacity:0}
.card.rv.in{opacity:1;animation:up .5s both;animation-delay:var(--d,0ms)}
.cat{display:inline-flex;align-items:center;gap:7px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:10px}
.cat i{width:9px;height:9px;background:var(--c);transform:rotate(45deg);flex:none}
.card h3{font-size:1.2rem;line-height:1.22;margin-bottom:5px}
.card p{color:var(--muted);font-size:.93rem}
.card .go{position:absolute;left:18px;bottom:13px;font-weight:700;font-size:.88rem;color:var(--ink);transition:letter-spacing .2s}
.card:hover .go{letter-spacing:.05em}
.card:hover .go::after{content:"";display:block;height:2px;background:var(--c);margin-top:1px}

/* Kategori kutuları */
.cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.cat-tile{display:block;background:var(--paper);border:1.5px solid var(--line2);padding:18px;transition:transform .18s,box-shadow .18s,border-color .18s}
.cat-tile:hover{border-color:var(--ink);transform:translate(-3px,-3px);box-shadow:6px 6px 0 var(--c)}
.cat-tile .top{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.cat-tile h3{font-size:1.25rem;display:flex;align-items:center;gap:10px}
.cat-tile h3 i{width:11px;height:11px;background:var(--c);transform:rotate(45deg)}
.cat-tile .n{font-family:'JetBrains Mono',monospace;font-size:.8rem;color:var(--muted)}
.cat-tile p{color:var(--muted);font-size:.9rem}
.all-link{display:inline-block;margin-top:28px;font-weight:700;font-size:1.05rem;border-bottom:2px solid var(--accent);padding-bottom:2px;transition:padding .2s}
.all-link:hover{padding-right:8px}

/* Tüm araçlar sayfası */
.page-head{padding:30px 0 10px}
.crumb{font-size:.88rem;color:var(--muted);margin-bottom:12px}
.crumb a:hover{color:var(--ink);text-decoration:underline}
.page-head h1{font-size:clamp(2rem,4.5vw,3rem);line-height:1.1}
.page-lead{color:var(--muted);font-size:1.05rem;margin:8px 0 6px;max-width:660px}
.filters{display:flex;flex-direction:column;gap:12px;margin:22px 0 26px}
.filters input{max-width:460px;width:100%;padding:12px 14px;border:2px solid var(--ink);border-radius:0;background:var(--paper);outline:none;-webkit-appearance:none}
.filters input:focus{box-shadow:3px 3px 0 var(--accent)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{display:flex;align-items:center;gap:7px;padding:7px 13px;border:1.5px solid var(--ink);background:var(--paper);cursor:pointer;font-weight:600;font-size:.88rem;transition:background .15s,color .15s}
.chip.on{background:var(--ink);color:var(--bg)}
.chip i{width:9px;height:9px;background:var(--c);transform:rotate(45deg)}
.chip small{font-family:'JetBrains Mono',monospace;font-size:.72rem;opacity:.7}
.cat-select{display:none;max-width:460px;width:100%;padding:12px 14px;border:2px solid var(--ink);border-radius:0;background:var(--paper)}
@media(max-width:640px){.chips{display:none}.cat-select{display:block}}
.group{margin-bottom:38px}
.group-h{display:flex;align-items:center;gap:10px;font-size:1.45rem;margin-bottom:14px}
.group-h i{width:11px;height:11px;background:var(--c);transform:rotate(45deg)}
.group-h small{font-family:'JetBrains Mono',monospace;font-size:.8rem;color:var(--muted);font-weight:400}
.empty{display:none;padding:30px 0;color:var(--muted)}

/* Hesaplama sayfası */
.tool-box{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:26px;background:var(--paper);border:2px solid var(--ink);box-shadow:6px 6px 0 var(--ink);padding:24px;margin-top:22px}
@media(max-width:760px){.tool-box{grid-template-columns:1fr;gap:18px;padding:16px;box-shadow:4px 4px 0 var(--ink)}}
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;font-size:.92rem;margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;padding:11px 12px;border:1.5px solid var(--ink);border-radius:0;background:var(--bg);outline:none;font-size:1rem;transition:box-shadow .15s;-webkit-appearance:none}
.field select{-webkit-appearance:auto}
.field textarea{min-height:76px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{box-shadow:3px 3px 0 var(--c)}
.field input::placeholder,.field textarea::placeholder{color:var(--muted);opacity:.65}
.field small{display:block;color:var(--muted);font-size:.84rem;margin-top:4px;line-height:1.45}
.opt{font-weight:400;color:var(--muted);font-size:.84rem}
.btn{width:100%;padding:13px 18px;border:2px solid var(--ink);background:var(--ink);color:var(--bg);font-weight:700;cursor:pointer;box-shadow:3px 3px 0 var(--c);transition:transform .12s,box-shadow .12s}
.btn:hover{transform:translate(-1px,-1px);box-shadow:5px 5px 0 var(--c)}
.btn:active{transform:translate(3px,3px);box-shadow:0 0 0 var(--c)}
.live-hint{font-size:.84rem;color:var(--muted);margin-top:8px}
.result{border:2px dashed var(--ink);background:var(--bg);padding:14px 18px 16px;min-height:200px;align-self:start}
.result h4{display:flex;justify-content:space-between;align-items:center;font-family:'JetBrains Mono',monospace;font-size:.76rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:8px}
.result h4 button{background:none;border:1.5px solid var(--muted);padding:3px 10px;font-size:.76rem;cursor:pointer;color:var(--muted);text-transform:none;letter-spacing:0}
.result h4 button:hover{border-color:var(--ink);color:var(--ink)}
.row{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);animation:slideIn .3s both}
.row:last-child{border-bottom:0}
.row span{color:var(--muted);font-size:.93rem}
.row b{font-family:'JetBrains Mono',monospace;font-weight:600;font-size:.95rem;text-align:right;word-break:break-word}
.row.big{flex-direction:column;gap:4px;border-bottom:2px solid var(--ink);padding:4px 0 12px;margin-bottom:4px}
.row.big b{align-self:flex-start;text-align:left;font-size:1.6rem;padding:0 4px;margin-left:-4px;background:linear-gradient(transparent 56%,var(--mark) 56%,var(--mark) 92%,transparent 92%)}
@keyframes slideIn{from{opacity:0;transform:translateY(5px)}}
.note{font-size:.88rem;color:var(--muted);padding:2px 0 2px 12px;border-left:3px solid var(--c);margin-top:12px}
.note.warn{background:var(--warnbg);color:var(--ink);border-left-color:var(--accent);padding:9px 12px}
.err{color:var(--bad)}
.placeholder{display:grid;place-items:center;text-align:center;height:150px;color:var(--muted);font-size:.95rem}
.used{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line2);font-size:.86rem}
.used h5{font-family:'JetBrains Mono',monospace;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:6px}
.used dl{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:3px 14px}
.used dt{color:var(--muted)}
.used dd{font-weight:600;text-align:right;word-break:break-word}
.how{display:inline-block;margin-top:12px;font-size:.88rem;font-weight:600;border-bottom:1.5px solid var(--accent)}
.gauge{margin:12px 0 8px}
.gauge .bar{position:relative;height:10px;border:1.5px solid var(--ink);background:linear-gradient(90deg,#7aa6d8 0 14%,#6fae7f 14% 40%,#e5b84a 40% 60%,#d9644a 60%)}
.gauge .mk{position:absolute;top:50%;width:4px;height:22px;background:var(--ink);transform:translate(-50%,-50%);transition:left .5s}
.gauge .lb{display:flex;justify-content:space-between;font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--muted);margin-top:6px}
.tool-info{grid-column:1/-1;font-size:.9rem;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}
.tool-info b{color:var(--ink)}
.tool-sec{max-width:780px;margin-top:48px}
.tool-sec h2{font-size:1.65rem;line-height:1.2;margin-bottom:12px}
.tool-sec p{margin-bottom:12px}
.tool-sec h3{font-size:1.1rem;margin:20px 0 6px}
.tool-sec ul{padding-left:20px;color:var(--muted)}
.tool-sec li{margin-bottom:4px}
.example{background:var(--paper);border-left:4px solid var(--accent);padding:14px 16px}
.tool-faq details{border-bottom:1.5px solid var(--ink)}
.tool-faq summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px;padding:14px 0}
.tool-faq summary::-webkit-details-marker{display:none}
.tool-faq summary::after{content:"+";font-family:'JetBrains Mono',monospace;color:var(--accent);font-size:1.1rem}
.tool-faq details[open] summary::after{content:"−"}
.tool-faq details p{color:var(--muted);margin:0 0 14px}
.rel{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.rel a{display:flex;align-items:center;gap:9px;border:1.5px solid var(--line2);padding:12px 14px;font-weight:600;background:var(--paper);transition:border-color .15s}
.rel a i{width:8px;height:8px;background:var(--c);transform:rotate(45deg);flex:none}
.rel a:hover{border-color:var(--ink)}
.updated{max-width:780px;margin-top:40px;font-size:.86rem;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}

/* SSS (ana sayfa) */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;column-gap:44px;align-items:start}
@media(max-width:820px){.faq-grid{grid-template-columns:1fr}}
.qa{border-bottom:1.5px solid var(--ink)}
.qa button{width:100%;text-align:left;background:none;border:0;padding:16px 0;cursor:pointer;display:flex;gap:14px;align-items:baseline;font-weight:600;font-size:1rem}
.qa button:hover>span:nth-child(2){text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:4px}
.qa .num{flex:none;font-family:'JetBrains Mono',monospace;font-size:.8rem;color:var(--accent)}
.qa .pm{margin-left:auto;flex:none;width:18px;height:18px;position:relative;align-self:center}
.qa .pm::before,.qa .pm::after{content:"";position:absolute;left:50%;top:50%;width:13px;height:2px;background:var(--ink);transform:translate(-50%,-50%);transition:transform .3s}
.qa .pm::after{transform:translate(-50%,-50%) rotate(90deg)}
.qa.open .pm::after{transform:translate(-50%,-50%) rotate(0)}
.qa .ans{display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s ease}
.qa.open .ans{grid-template-rows:1fr}
.qa .ans>div{overflow:hidden}
.qa .ans p{padding:0 30px 18px 36px;color:var(--muted);font-size:.95rem}

/* CTA + footer */
.cta{margin:52px 0 10px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;padding:28px;border:2px solid var(--ink);background:#f6d860;color:#1d1b16;box-shadow:6px 6px 0 var(--ink)}
.cta h2{font-size:clamp(1.4rem,3vw,1.9rem);line-height:1.15}
.cta p{opacity:.8}
.cta a{background:#1d1b16;color:#f6d860;padding:12px 22px;font-weight:700;border:2px solid #1d1b16;transition:transform .15s}
.cta a:hover{transform:translate(-2px,-2px)}
footer{border-top:2px solid var(--ink);padding:26px 0;margin-top:56px;color:var(--muted);font-size:.88rem}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.tk-ic{width:17px;height:17px;color:var(--accent);vertical-align:-3px}
.totop{position:fixed;right:18px;bottom:18px;width:44px;height:44px;border:2px solid var(--ink);background:var(--paper);box-shadow:3px 3px 0 var(--ink);cursor:pointer;font-size:1.1rem;opacity:0;transform:translateY(16px);transition:opacity .25s,transform .25s;z-index:60;pointer-events:none}
.totop.show{opacity:1;transform:none;pointer-events:auto}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,120px);background:var(--ink);color:var(--bg);padding:10px 18px;font-weight:600;font-size:.9rem;z-index:300;transition:transform .35s cubic-bezier(.2,1.3,.4,1)}
.toast.show{transform:translate(-50%,0)}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .card.rv{opacity:1}
}