/* base compartilhada do urna.app: home (home.html) e páginas internas (_includes/header.html). Estático, fora do PostCSS. */
:root{
  /* cores amostradas dos cards da App Store 7.8.0 + paleta do app */
  --sky:#027FEC; --sky-d:#0050A3; --store-blue:#0079FB; --store-green:#029243; --store-green-2:#019D3E; --store-yellow:#FDDB04;
  --blue:#2C3496; --confirma:#36C75B; --corrige:#FF7F57; --ink:#151618; --paper:#F2F2F6; --lcd:#F3F1E6;
  --display:"Bricolage Grotesque",system-ui,sans-serif; --body:"Nunito",system-ui,sans-serif; --mono:"IBM Plex Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
/* html = status bar, barras e overscroll do Safari: claro como o header das internas; o footer.html troca para preto no fim (a home sobrescreve em home.css) */
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip;background:var(--paper)}
body{margin:0;background:linear-gradient(var(--paper),var(--paper));color:var(--ink);font:400 18px/1.55 var(--body);overflow-x:clip}
img,video{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--display);margin:0;letter-spacing:-.02em}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* header de vidro: flutua sobre o conteúdo; o JS tinge com a cor da seção de baixo e troca o texto (claro/escuro) */
.hdr{--tint:8,95,172;position:sticky;top:0;z-index:50;margin-bottom:-68px;color:#fff;background:rgba(var(--tint),var(--a,.74));-webkit-backdrop-filter:saturate(180%) blur(18px);backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid rgba(255,255,255,.16);transition:background-color .25s,color .25s,border-color .25s}
.hdr[data-tone="light"] .logo b,.hdr[data-tone="light"] .nav a.link{text-shadow:0 1px 3px rgba(0,0,0,.28)}
.hdr[data-tone="dark"]{--a:.55;color:var(--ink);border-bottom-color:rgba(21,22,24,.08)}
.hdr[data-tone="dark"] .nav a.link:hover{background:rgba(21,22,24,.07)}
.hdr .wrap{display:flex;align-items:center;gap:18px;height:68px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font:800 21px/1 var(--display);letter-spacing:-.02em}
.logo img{width:36px;height:36px;border-radius:9px;box-shadow:0 2px 8px rgba(0,0,0,.2)}
.logo span{opacity:.75;font-weight:600}
.nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav a.link{padding:8px 14px;border-radius:99px;text-decoration:none;font-weight:800;font-size:15px}
.nav a.link:hover{background:rgba(255,255,255,.14)}
.keycap{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font:800 14px/1 var(--body);letter-spacing:.04em;text-transform:uppercase;padding:12px 18px;border-radius:9px;color:var(--ink);background:var(--confirma);box-shadow:inset 0 -4px 0 rgba(0,0,0,.2),0 2px 0 rgba(0,0,0,.25);transition:transform .1s,box-shadow .1s}
.keycap:active{transform:translateY(2px);box-shadow:inset 0 -2px 0 rgba(0,0,0,.2)}
.keycap.white{background:#fff}.keycap.orange{background:var(--corrige)}
.menu-btn{display:none;background:none;border:0;color:inherit;width:40px;height:40px;cursor:pointer}
.mobile-menu{display:none}

footer{background:var(--ink);color:rgba(255,255,255,.8);padding:52px 0 32px;font-size:15px}
.foot{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px}
.foot h4{font:700 12px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.5);margin:0 0 14px}
.foot a{display:block;text-decoration:none;padding:5px 0}
.foot a:hover{color:#fff}
.foot a.logo{display:flex;color:#fff}
.foot p{margin:1em 0}
.legal{margin-top:36px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:13px;color:rgba(255,255,255,.6)}
.legal img{height:22px;width:auto;filter:invert(1) brightness(1.4)}

/* páginas internas (_includes/header.html): o mesmo vidro, claro sobre --paper, texto escuro e no fluxo (sem tinta por JS) */
.hdr.site{--tint:242,242,246;--a:.82;margin-bottom:0}
.kicker-mono{display:block;font:600 13px/1.3 var(--mono);color:var(--sky-d)}

/* artigos: leitura primeiro. Coluna de 720px (~68ch), corpo Nunito 18/1.7, sem blocos de cor nem caixa alta */
.post{max-width:720px;margin:56px auto 24px}
.post h1{font-size:clamp(32px,5vw,46px);line-height:1.08;font-weight:800;margin:10px 0 0}
.post-cover{margin:28px 0 0;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:20px;background:#e4e4ea}
.post-body.prose{--tw-prose-body:var(--ink);--tw-prose-headings:var(--ink);--tw-prose-bold:var(--ink);--tw-prose-links:var(--sky-d);--tw-prose-quotes:var(--ink);--tw-prose-quote-borders:#c9cad3;--tw-prose-bullets:#8a8d99;--tw-prose-counters:#5b5e6a;--tw-prose-hr:#dcdde3;max-width:none;margin-top:32px;font-size:18px;line-height:1.7}
.post-back{display:inline-block;margin-top:40px;padding:10px 18px;border:1px solid rgba(21,22,24,.14);border-radius:99px;font-weight:700;font-size:15px;text-decoration:none;color:#474a55}
.post-back:hover{background:#fff;color:var(--ink)}

/* /artigos: cards claros, capa 16:9 */
.posts-head{margin-top:56px}
.posts-head h1{font-size:clamp(36px,5vw,56px);line-height:1;font-weight:800}
.posts-head p{margin:14px 0 0;max-width:34em;color:#474a55}
.post-list{list-style:none;margin:36px 0 24px;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:20px}
.post-card{display:block;height:100%;background:#fff;border-radius:22px;overflow:hidden;text-decoration:none;color:var(--ink);box-shadow:0 1px 2px rgba(21,22,24,.06);transition:transform .15s,box-shadow .15s}
.post-card:hover{transform:translateY(-2px);box-shadow:0 16px 32px -18px rgba(21,22,24,.35)}
.post-card img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.post-card div{padding:18px 22px 22px}
.post-card h2{font-size:22px;line-height:1.15;font-weight:800;margin-top:8px}

@media (max-width:640px){
  body{font-size:17px}
  .wrap{padding:0 16px}
  .nav a.link{display:none}
  .menu-btn{display:grid;place-items:center}
  .hdr .keycap{padding:10px 14px}
  .mobile-menu.open{display:block;padding:0 16px 12px}
  /* menu aberto: vidro vira fundo sólido (a tinta semitransparente + blur sobre o hero dava um degradê na altura do menu); --solid = cor composta que o JS da home calcula, nas internas o próprio --paper */
  .hdr.menu-open{background:var(--solid,rgb(var(--tint)));-webkit-backdrop-filter:none;backdrop-filter:none}
  .mobile-menu a{display:block;padding:12px 0;font-weight:800;text-decoration:none;border-top:1px solid currentColor;border-top-color:color-mix(in srgb,currentColor 20%,transparent)}
  .foot{grid-template-columns:1fr}
  .legal{flex-direction:column;align-items:flex-start}
  .post,.posts-head{margin-top:32px}
  .post-body.prose{font-size:17px}
  .post-list{grid-template-columns:1fr}
}