/* Algoritma Postası — "hava postası" kimliği. Lacivert zemin, krem kâğıt, turuncu pul. */
:root{
  --ink:#0F1B2D; --ink-2:#16253B; --ink-3:#22385A;
  --paper:#F4F1EA; --paper-2:#E9E3D6;
  --muted:#A9B8CC; --accent:#FF6B2C; --accent-dk:#C2410C;
  --display:"Space Grotesk","Segoe UI",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  --serif:"Source Serif 4",Georgia,serif;
  --r:14px;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ink);color:var(--paper);font:17px/1.6 var(--display)}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.stripe{height:10px;background:repeating-linear-gradient(-45deg,var(--accent) 0 14px,var(--paper) 14px 22px,var(--ink) 22px 36px,var(--paper) 36px 44px)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* Üst menü */
.top{border-bottom:1px solid var(--ink-3)}
.top-in{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 20px var(--display);letter-spacing:-.01em}
.brand img{border-radius:50%}
.brand b{color:var(--accent)}
.brand.small{font-size:16px}
nav{display:flex;gap:6px;flex-wrap:wrap}
.top nav a{text-decoration:none;font:700 13px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:8px 10px;border-radius:8px}

.top nav a:hover{color:var(--paper);background:var(--ink-2)}

/* Ortak */
.eyebrow{font:700 12px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font:500 13px var(--mono);color:var(--muted)}
.tag{display:inline-block;font:700 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;background:var(--accent);color:var(--ink);padding:3px 8px;border-radius:4px}
.btn{display:inline-flex;align-items:center;min-height:44px;padding:10px 18px;border-radius:10px;background:var(--accent);color:var(--ink);font:700 15px var(--display);text-decoration:none}
.btn:hover{background:#ff8550}
.lead{font-size:19px;color:var(--muted);max-width:60ch;margin:12px 0 0}
h1,h2,h3{text-wrap:balance;letter-spacing:-.02em;margin:0}

/* Hero */
.hero{padding-block:56px 32px}
.hero h1{font:700 clamp(34px,6vw,64px)/1.02 var(--display);margin-top:12px;max-width:16ch}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero.small{padding-block:48px 16px}
.hero.small h1{font-size:clamp(30px,5vw,48px)}

/* Son gönderi */
.today{padding-block:8px 40px}
.today-label{font:700 12px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.feature{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:36px;align-items:center;background:var(--paper);color:var(--ink);border-radius:var(--r);padding:28px;position:relative}
.feature::after{content:"";position:absolute;inset:0;border-radius:var(--r);pointer-events:none;border:10px solid transparent;border-image:repeating-linear-gradient(-45deg,var(--accent) 0 14px,var(--paper) 14px 22px,var(--ink) 22px 36px,var(--paper) 36px 44px) 10;opacity:.9}
.feature .meta{color:#4A5A72}
.feature h2{font:700 clamp(26px,3.6vw,40px)/1.08 var(--display);margin:12px 0}
.feature p{color:#33425A;max-width:52ch;margin:0 0 20px}
@media (max-width:720px){.feature{grid-template-columns:minmax(0,1fr);padding:20px}.feature-video{max-width:300px}}
.empty-feature{display:flex;align-items:center;gap:20px;background:var(--ink-2);border:1.5px dashed var(--ink-3);border-radius:var(--r);padding:28px}
.empty-feature p{margin:0;color:var(--muted)}
.empty-feature b{color:var(--paper)}

/* Video kutusu */
.yt{position:relative;aspect-ratio:9/16;width:100%;max-width:300px;border-radius:12px;overflow:hidden;background:#000}
.yt img{width:100%;height:100%;object-fit:cover}
.feature-video .yt,.post-video .yt{height:auto}
.yt iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.play{position:absolute;left:0;right:0;bottom:20%;margin:0 auto;width:76px;height:76px;border-radius:50%;border:0;background:var(--accent);cursor:pointer;display:grid;place-items:center;box-shadow:0 8px 24px rgba(0,0,0,.35)}
.play svg{width:34px;height:34px;fill:var(--ink);margin-left:4px}
.play:hover{transform:scale(1.05)}

/* Zarf simgesi */
.env{width:64px;height:auto;flex:none}
.env rect,.env polyline{fill:none;stroke:var(--paper);stroke-width:9;stroke-linejoin:round;stroke-linecap:round}
.env .o{fill:var(--ink);stroke:var(--accent);stroke-width:6}
.env .f{fill:var(--accent)}

/* Kartlar */
.week{padding-block:24px 56px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:20px;flex-wrap:wrap}
.sec-head h2{font:700 28px var(--display)}
.sec-head a{font:700 13px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent);text-decoration:none}
.cards{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,240px),1fr));gap:18px}
.card{border-radius:var(--r);overflow:hidden;background:var(--ink-2);border:1px solid var(--ink-3);min-width:0}
.card-open{display:flex;flex-direction:column;text-decoration:none;height:100%}
.card-open img{height:auto;aspect-ratio:9/12;object-fit:cover;object-position:center 40%;width:100%}
.card-tx{padding:16px;display:flex;flex-direction:column;gap:8px}
.card h3{font:700 19px/1.2 var(--display)}
.card p{margin:0;font-size:15px;color:var(--muted)}
@media (max-width:600px){.cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.card p{display:none}.card h3{font-size:16px}.card-tx{padding:12px}.card-sealed{min-height:200px;padding:24px 12px}.sealed-tx b{font-size:15px}}
.card-open:hover h3{color:var(--accent)}
.card-sealed{display:none;flex-direction:column;align-items:center;justify-content:center;gap:16px;text-align:center;padding:36px 20px;min-height:260px;background:repeating-linear-gradient(-45deg,transparent 0 12px,rgba(244,241,234,.03) 12px 24px)}
.sealed-tx{display:flex;flex-direction:column;gap:6px;align-items:center;color:var(--muted);font-size:15px}
.sealed-tx b{color:var(--paper);font-size:17px}
.card.is-sealed .card-open{display:none}
.card.is-sealed .card-sealed{display:flex}
.card.is-sealed{border-style:dashed}

/* Bülten */
.nl{background:var(--paper);color:var(--ink);padding-block:48px}
.nl-in{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px;align-items:center}
@media (max-width:760px){.nl-in{grid-template-columns:minmax(0,1fr)}}
.nl h2{font:700 clamp(24px,3.4vw,34px)/1.1 var(--display);margin:8px 0}
.nl p{margin:0;color:#4A5A72}
.nl-form{display:flex;gap:8px;flex-wrap:wrap}
.nl-form input{flex:1 1 220px;min-height:48px;padding:10px 14px;border-radius:10px;border:2px solid var(--ink);background:#fff;color:var(--ink);font:16px var(--display)}
.nl-form button{min-height:48px;padding:10px 18px;border-radius:10px;border:0;background:var(--ink);color:var(--paper);font:700 15px var(--display);cursor:pointer}
.nl-form.soon input,.nl-form.soon button{opacity:.6;cursor:not-allowed}

/* Yazı sayfası */
.post{padding-block:40px 56px}
.crumb{font:700 12px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);text-decoration:none}
.post-head{max-width:760px;display:flex;flex-direction:column;gap:12px;margin-bottom:32px}
.post-head h1{font:700 clamp(30px,5vw,52px)/1.05 var(--display)}
.post-grid{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:48px;align-items:start}
@media (max-width:760px){.post-grid{grid-template-columns:minmax(0,1fr)}}
.post-video{position:sticky;top:20px;display:flex;flex-direction:column;gap:12px}
@media (max-width:760px){.post-video{position:static}}
.watch{display:flex;gap:8px;flex-wrap:wrap}
.watch a{font:700 12px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--paper);text-decoration:none;border:1.5px solid var(--ink-3);padding:8px 10px;border-radius:8px}
.watch a:hover{border-color:var(--accent);color:var(--accent)}
.post-body{font:19px/1.7 var(--serif);max-width:65ch}
.post-body p{margin:0 0 1.1em}
.post-body h2{font:700 14px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:32px 0 10px}
.sources{margin:0;padding-left:20px;font:16px/1.5 var(--display)}
.sources a{color:var(--muted)}
.sources a:hover{color:var(--paper)}
.sealed-box{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;aspect-ratio:9/16;max-width:300px;justify-content:center;border:1.5px dashed var(--ink-3);border-radius:12px;padding:24px;color:var(--muted)}
.sealed-box b{color:var(--paper)}
.post.is-open .sealed-only,.post.is-sealed .open-only{display:none}
.pager{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:12px;margin-top:48px}
.pn{display:flex;flex-direction:column;gap:4px;padding:16px;border:1px solid var(--ink-3);border-radius:12px;text-decoration:none;font-weight:700}
.pn span{font:700 11px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.pn.next{text-align:right}
.pn:hover{border-color:var(--accent)}
.pn.is-sealed{display:none}

/* Arşiv */
.arch{padding-block:16px 56px}
.arch-week{border-top:1px solid var(--ink-3);padding-top:24px;margin-top:24px}
.arch-week h2{font:700 26px var(--display)}
.arch-week .range{font:500 14px var(--mono);color:var(--accent);margin-top:4px}
.arch-week p{color:var(--muted);max-width:60ch}
.arch-list{list-style:none;padding:0;margin:16px 0 0;display:flex;flex-direction:column}
.arch-list li{border-bottom:1px solid var(--ink-3)}
.arch-list a{display:grid;grid-template-columns:150px auto minmax(0,1fr);gap:14px;align-items:center;padding:14px 4px;text-decoration:none;font:500 14px var(--mono);color:var(--muted)}
.arch-list a b{font:700 17px var(--display);color:var(--paper)}
.arch-list a:hover b{color:var(--accent)}
@media (max-width:640px){.arch-list a{grid-template-columns:minmax(0,1fr);gap:4px}}
.sealed-row{display:none;padding:14px 4px;font:500 14px var(--mono);color:var(--muted)}
.arch-list li.is-sealed a{display:none}
.arch-list li.is-sealed .sealed-row{display:block}

/* Alt bilgi */
.foot{border-top:1px solid var(--ink-3);padding-block:32px}
.foot-in{display:flex;flex-wrap:wrap;gap:20px 40px;justify-content:space-between;align-items:flex-start}
.foot p{margin:8px 0 0;color:var(--muted);font-size:15px}
.social{list-style:none;margin:0;padding:0;display:flex;gap:16px;flex-wrap:wrap}
.social a{font:700 13px var(--mono);letter-spacing:.1em;text-transform:uppercase;text-decoration:none;color:var(--paper)}
.social a:hover{color:var(--accent)}
.fine{flex-basis:100%;font-size:13px!important}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}