/* tahagundogar.com — record sheet
   One family, no colour except the source mark, structure carries the meaning. */

:root{
  --paper:#F3F4F2;
  --paper-2:#E8EAE7;
  --ink:#16181A;
  --ink-2:#585D62;
  --rule:#C8CCC8;
  --rule-soft:#DDE0DC;
  --mark:#1B4A6B;

  --measure:68ch;
  --wrap:1180px;
  --gut:clamp(20px,5vw,64px);
  --band:clamp(64px,9vw,124px);
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"IBM Plex Sans","Segoe UI",Helvetica,Arial,sans-serif;
  font-size:17px;
  line-height:1.62;
  font-feature-settings:"kern" 1;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{font-weight:600;line-height:1.12;letter-spacing:-0.017em;margin:0}
p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}

a{color:inherit}
a:focus-visible,button:focus-visible{outline:2px solid var(--mark);outline-offset:3px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.measure{max-width:var(--measure)}

/* ---------- masthead ---------- */

.mast{
  position:sticky;top:0;z-index:20;
  background:var(--paper);
  border-bottom:1px solid var(--rule);
}
.mast-in{display:flex;align-items:baseline;gap:24px;padding:15px 0;justify-content:space-between}
.mark{
  font-weight:600;font-size:15px;letter-spacing:0.02em;
  text-decoration:none;white-space:nowrap;
}
.mark span{font-weight:400;color:var(--ink-2)}
.nav{display:flex;gap:22px;flex-wrap:wrap;justify-content:flex-end}
.nav a{
  font-size:14.5px;color:var(--ink-2);text-decoration:none;
  padding-bottom:2px;border-bottom:1px solid transparent;
}
.nav a:hover{color:var(--ink)}
.nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--ink)}
.navbtn{
  display:none;background:none;border:1px solid var(--rule);
  font:inherit;font-size:14px;padding:5px 12px;color:var(--ink);cursor:pointer;
}

/* ---------- shared blocks ---------- */

.band{padding:var(--band) 0;border-top:1px solid var(--rule)}
.band:first-of-type{border-top:0}
.band.dark{background:var(--ink);color:var(--paper);border-top:0}
.band.dark a{color:var(--paper)}
.band.tint{background:var(--paper-2)}

.lede{font-size:clamp(19px,2vw,22px);line-height:1.5;color:var(--ink-2)}

.head{padding:clamp(56px,8vw,96px) 0 clamp(30px,4vw,44px)}
.head h1{font-size:clamp(31px,4.4vw,50px);max-width:19ch}
.head .lede{margin-top:18px;max-width:60ch}

/* two-column body: statement left, aside right */
.split{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:clamp(28px,5vw,84px);align-items:start}
.aside{font-size:14.5px;line-height:1.6;color:var(--ink-2);border-top:2px solid var(--ink);padding-top:14px}
.dark .aside{border-top-color:var(--paper);color:#B9BEC2}

/* ---------- the record row: claim left, source right ---------- */

.rec{border-top:1px solid var(--rule)}
.rec > li{list-style:none}
.rec{margin:0;padding:0}
.row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,240px);
  gap:clamp(16px,4vw,56px);
  padding:26px 0;
  border-bottom:1px solid var(--rule-soft);
  align-items:start;
}
.row:last-child{border-bottom:1px solid var(--rule)}
.dark .rec,.dark .row:last-child{border-color:#3A3E42}
.dark .row{border-bottom-color:#2A2E31}

.row h3{font-size:clamp(18px,1.8vw,21px)}
.row .org{font-size:15px;color:var(--ink-2);margin-top:3px}
.dark .row .org{color:#AEB4B8}
.row p{font-size:16px;margin-top:11px;max-width:62ch}
.dark .row p{color:#D5D9DB}

.src{font-size:14px;line-height:1.5;color:var(--ink-2);text-align:right}
.dark .src{color:#AEB4B8}
.src .when{display:block;color:var(--ink);font-weight:600}
.dark .src .when{color:var(--paper)}
.src a{color:var(--mark);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.dark .src a{color:#9CC3DE}

/* ---------- home ---------- */

.hero{padding:clamp(58px,10vw,132px) 0 clamp(44px,6vw,80px)}
.hero h1{font-size:19px;font-weight:600;letter-spacing:0}
.hero .role{font-size:19px;color:var(--ink-2);max-width:46ch;margin-top:2px}
.thesis{
  font-size:clamp(34px,6.1vw,74px);
  line-height:1.03;
  letter-spacing:-0.032em;
  font-weight:600;
  margin:clamp(30px,5vw,58px) 0 0;
  max-width:17ch;
}
.thesis em{font-style:normal;color:var(--ink-2)}

.argument{columns:2;column-gap:clamp(28px,5vw,72px);max-width:none}
.argument p{break-inside:avoid;max-width:52ch}

/* ---------- misc ---------- */

.pill-row{font-size:15px;color:var(--ink-2);margin-top:26px;padding-top:14px;border-top:1px solid var(--rule)}

.cred{border-top:1px solid var(--rule);padding-top:22px;margin-top:30px}
.dark .cred{border-top-color:#3A3E42}
.cred h3{font-size:19px}
.cred p{font-size:16px;margin-top:9px;max-width:64ch}
.dark .cred p{color:#D5D9DB}

.grouphead{font-size:15px;font-weight:600;margin:44px 0 0}
.grouphead:first-child{margin-top:0}

.note{font-size:14.5px;color:var(--ink-2);max-width:62ch;margin-top:20px}

.foot{border-top:1px solid var(--rule);padding:34px 0 46px;font-size:14.5px;color:var(--ink-2)}
.foot-in{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.foot strong{display:block;color:var(--ink);font-weight:600}
.foot a{color:var(--mark)}

/* ---------- responsive ---------- */

@media (max-width:820px){
  .split{grid-template-columns:1fr;gap:30px}
  .argument{columns:1}
  .row{grid-template-columns:1fr;gap:10px}
  .src{text-align:left}
  .src .when{display:inline;margin-right:8px}
}

@media (max-width:640px){
  body{font-size:16px}
  .nav{display:none;width:100%;flex-direction:column;align-items:flex-start;gap:2px;padding:6px 0 12px}
  .nav.open{display:flex}
  .nav a{padding:7px 0;font-size:16px}
  .navbtn{display:block}
  .mast-in{flex-wrap:wrap}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}