/* portfolio.css - shared design tokens + base + nav + footer
   Used by every page (home, notes, article) to keep branding consistent. */

:root {
  --paper:#F2EEE5;
  --paper-2:#EBE6DA;
  --ink:#1A1814;
  --ink-2:#3A352C;
  --ink-3:#6A6253;
  --ink-4:#A39A88;
  --rule:rgba(26,24,20,0.14);
  --rule-soft:rgba(26,24,20,0.07);
  --accent:#0080ff;
  --accent-ink:#FFFFFF;
  --selection:rgba(0,128,255,.25);
}
html[data-theme="dark"] {
  --paper:#15140F;
  --paper-2:#1C1A14;
  --ink:#EFEAE0;
  --ink-2:#CFC8B9;
  --ink-3:#928974;
  --ink-4:#5C5546;
  --rule:rgba(239,234,224,0.14);
  --rule-soft:rgba(239,234,224,0.07);
  --accent:#4da3ff;
  --accent-ink:#15140F;
  --selection:rgba(77,163,255,.28);
}

*{box-sizing:border-box}
::selection{background:var(--selection)}
html,body{margin:0;padding:0;background:var(--paper);color:var(--ink);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  transition:background .4s ease, color .4s ease;}
body{font-family:"Instrument Serif", "Source Serif 4", Georgia, serif;}
.sans{font-family:"Instrument Sans", ui-sans-serif, system-ui, sans-serif;}
.mono{font-family:"JetBrains Mono", ui-monospace, monospace;}
.serif{font-family:"Instrument Serif", "Source Serif 4", Georgia, serif;}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:default}

.frame{max-width:1560px;margin:0 auto;padding:28px 64px 80px;position:relative}
.frame.narrow{max-width:1120px;padding:28px 56px 80px}
@media (min-width:1500px){ .frame{padding:32px 88px 96px} .frame.narrow{padding:32px 80px 96px} }
@media (min-width:1800px){ .frame{padding:36px 112px 120px} .frame.narrow{padding:36px 96px 120px} }
@media (max-width:900px){ .frame, .frame.narrow{padding:20px 20px 56px} }
@media (max-width:560px){ .frame, .frame.narrow{padding:16px 16px 48px} }

/* ─── nav ─── */
.nav{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;
  padding-bottom:18px;border-bottom:.5px solid var(--rule);
  font-family:"Instrument Sans",sans-serif;font-size:13px;
}
.nav .left{display:flex;gap:18px;color:var(--ink-3)}
@media (max-width:900px){
  .nav{grid-template-columns:auto auto;row-gap:14px;column-gap:16px}
  .nav .left{order:1;font-size:12px;gap:10px;flex-wrap:wrap}
  .nav .center{order:0;grid-column:1 / -1;font-size:17px}
  .nav .right{order:2;gap:14px;font-size:12.5px}
  .nav .left span:nth-child(2){display:none}
}
@media (max-width:560px){
  .nav .right{gap:12px}
  .nav .right a[href*="#work"]{display:none}
  .theme-btn span:last-child{display:none}
  .theme-btn{padding:4px;width:24px;height:24px;justify-content:center;gap:0}
}
.nav .left .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);
  align-self:center;display:inline-block;margin-right:6px;
  box-shadow:0 0 0 4px color-mix(in oklab, var(--accent) 22%, transparent);
  animation:pulse 2.6s ease-in-out infinite;}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(.8);opacity:.7}}
.nav .center{font-family:"Instrument Serif",serif;font-style:italic;font-size:18px;letter-spacing:-.01em}
.nav .center a{display:inline}
.nav .right{display:flex;justify-content:flex-end;gap:18px;align-items:center;color:var(--ink-3)}
.nav .right a{position:relative;padding:4px 0}
.nav .right a.current{color:var(--ink)}
.nav .right a:hover{color:var(--ink)}
.nav .right a:hover::after,.nav .right a.current::after{transform:scaleX(1)}
.nav .right a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.theme-btn{display:inline-flex;align-items:center;gap:7px;padding:4px 9px;border:.5px solid var(--rule);border-radius:999px;color:var(--ink-3)}
.theme-btn:hover{color:var(--ink);border-color:var(--ink-3)}
.theme-btn .glyph{width:11px;height:11px;border-radius:50%;background:var(--ink);position:relative;overflow:hidden}
html[data-theme="dark"] .theme-btn .glyph::after{content:"";position:absolute;inset:0;background:var(--paper);transform:translate(35%,-35%);border-radius:50%}

/* ─── reveal (scroll-triggered, data-attr so React reconciliation can't wipe it) ─── */
@keyframes rv-in{
  from{opacity:0;transform:translateY(14px);filter:blur(6px)}
  to{opacity:1;transform:none;filter:none}
}
.rv{opacity:0;transform:translateY(14px);filter:blur(6px)}
.rv[data-revealed="true"]{animation:rv-in .9s cubic-bezier(.2,.7,.2,1) forwards;animation-delay:var(--rv-d,0ms)}
@media (prefers-reduced-motion: reduce){
  .rv{opacity:1;transform:none;filter:none}
  .rv[data-revealed="true"]{animation:none}
}

/* page transitions - fade body on internal nav */
body{transition:opacity .28s ease, transform .28s ease}
body.page-out{opacity:0;transform:translateY(-6px)}

/* ─── section header ─── */
.sec-h{
  display:grid;grid-template-columns:auto 1fr auto;align-items:end;gap:32px;
  padding:48px 0 22px;border-bottom:.5px solid var(--rule);
}
.sec-h .num{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.14em;color:var(--ink-3);text-transform:uppercase}
.sec-h h2{font-family:"Instrument Serif",serif;font-weight:400;font-size:clamp(28px,3.4vw,44px);line-height:1;letter-spacing:-.02em;margin:0}
.sec-h h2 em{font-style:italic;color:var(--accent)}
.sec-h .count{font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--ink-3)}
.sec-h .count a:hover{color:var(--ink)}
@media (max-width:680px){
  .sec-h{grid-template-columns:auto 1fr;gap:14px;padding:36px 0 18px}
  .sec-h .count{grid-column:1 / -1;text-align:left}
  .sec-h h2{font-size:32px}
}

/* ─── footer ─── */
.foot{
  margin-top:120px;padding-top:48px;border-top:.5px solid var(--rule);
  display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:48px;
}
@media (max-width:900px){
  .foot{grid-template-columns:1fr;gap:36px;margin-top:80px;padding-top:36px}
  .foot .col a.big-link{font-size:24px}
}
@media (max-width:560px){
  .foot .big{font-size:40px}
  .foot .col a.big-link{font-size:22px}
  .colophon{flex-direction:column;gap:10px;text-align:center;font-size:10px}
}
.foot .big{font-family:"Instrument Serif",serif;font-size:clamp(36px,5vw,72px);line-height:.98;letter-spacing:-.025em;color:var(--ink);max-width:14ch}
.foot .big em{font-style:italic;color:var(--accent)}
.foot .col h4{font-family:"JetBrains Mono",monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin:0 0 14px;font-weight:500}
.foot .col a.big-link{display:block;font-family:"Instrument Serif",serif;font-style:italic;font-size:30px;line-height:1.1;letter-spacing:-.015em;color:var(--ink);padding:6px 0;border-bottom:.5px solid var(--rule);position:relative}
.foot .col a.big-link:hover{color:var(--accent)}
.foot .col a.big-link::after{content:"↗";position:absolute;right:6px;top:6px;font-size:18px;font-style:normal;color:var(--ink-3);transition:transform .3s}
.foot .col a.big-link:hover::after{transform:translate(4px,-4px);color:var(--accent)}
.foot .col p.note{font-family:"Instrument Serif",serif;font-style:italic;font-size:15px;color:var(--ink-3);margin:14px 0 0;line-height:1.4}

.colophon{
  display:flex;justify-content:space-between;align-items:center;
  margin-top:64px;padding-top:18px;border-top:.5px solid var(--rule-soft);
  font-family:"JetBrains Mono",monospace;font-size:10.5px;color:var(--ink-3);
  letter-spacing:.06em;text-transform:uppercase;
}
.colophon .dots{display:flex;gap:6px}
.colophon .dots i{width:6px;height:6px;border-radius:50%;background:var(--ink-4)}
.colophon .dots i:first-child{background:var(--accent)}

/* ─── filter chips (used on Notes too) ─── */
.filters{display:flex;flex-wrap:wrap;gap:8px;padding:18px 0 22px;border-bottom:.5px solid var(--rule-soft);font-family:"Instrument Sans",sans-serif}
.chip{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:.5px solid var(--rule);border-radius:999px;font-size:12.5px;color:var(--ink-2);letter-spacing:-.005em;transition:all .25s ease}
.chip:hover{border-color:var(--ink-3);color:var(--ink)}
.chip.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.chip .n{font-family:"JetBrains Mono",monospace;font-size:10.5px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.chip.active .n{color:color-mix(in oklab, var(--paper) 60%, transparent)}

/* ─── tweaks panel override (warm dark) ─── */
html[data-theme="dark"] .twk-panel{background:rgba(28,26,20,.82);color:var(--ink);border-color:rgba(255,255,255,.08)}
html[data-theme="dark"] .twk-hd b,html[data-theme="dark"] .twk-x{color:var(--ink)}
html[data-theme="dark"] .twk-lbl,html[data-theme="dark"] .twk-val{color:var(--ink-2)}