/* pool.bz — base comum a todas as páginas: fontes, cores, cabeçalho (o trilho), rodapé, botões.
   As cores vêm da mesa: pano, trilho de nogueira, losangos de madrepérola, giz azul.
   Carregar antes do CSS próprio da página (play/style.css, diagram/desk.css). */
@font-face{font-family:"Barlow";src:url(/assets/fonts/barlow-400.woff2) format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Barlow";src:url(/assets/fonts/barlow-400-italic.woff2) format("woff2");font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:"Barlow";src:url(/assets/fonts/barlow-600.woff2) format("woff2");font-weight:600 700;font-style:normal;font-display:swap}
@font-face{font-family:"Barlow Condensed";src:url(/assets/fonts/barlow-condensed-600.woff2) format("woff2");font-weight:500 600;font-style:normal;font-display:swap}
@font-face{font-family:"Barlow Condensed";src:url(/assets/fonts/barlow-condensed-700.woff2) format("woff2");font-weight:700 900;font-style:normal;font-display:swap}
:root{
 --chalk:#e9eeec;--chalk-line:#cfd8d4;--slate:#17211e;--slate-soft:#4a5753;
 --cloth:#1f6a51;--cloth-deep:#174f3d;--rail:#5a3920;--rail-edge:#3e2716;--pearl:#f3efe4;
 --blue:#2e6bb8;--blue-ink:#1f4f8f;--blue-light:#7aaae6;
 --text:"Barlow",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
 --display:"Barlow Condensed","Barlow",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
 --measure:66ch;--wrap:min(1280px,calc(100% - 64px));
}
@media (max-width:900px){:root{--wrap:calc(100% - 32px)}}
@media (max-width:700px){:root{--wrap:calc(100% - 24px)}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:400 17px/1.6 var(--text);color:var(--slate);background:var(--chalk)}
:where(h1,h2,h3){font-family:var(--display);font-weight:700;letter-spacing:0;line-height:1.08;text-wrap:balance}
:where(a){color:var(--blue-ink);text-underline-offset:3px;text-decoration-thickness:1px}
:where(a:hover){text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--blue-light);outline-offset:2px}
.skip{position:absolute;left:-999px;top:8px;z-index:50;padding:8px 12px;background:var(--pearl);color:var(--slate)}
.skip:focus{left:8px}

/* Cabeçalho = o trilho da mesa: nogueira com os losangos de mira ao longo da borda.
   Classes próprias (header.site-rail, nav.site-nav) para vencer os seletores de elemento antigos
   de play/style.css e diagram/desk.css. */
header.site-rail{position:relative;background:linear-gradient(#64432a,#563820);color:var(--pearl);border:0;border-bottom:3px solid var(--rail-edge);padding:0;margin:0}
header.site-rail::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:7px;width:var(--wrap);margin:0 auto;pointer-events:none;opacity:.7;
 background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='7' viewBox='0 0 8 7' preserveAspectRatio='xMidYMid meet'%3E%3Cpath d='M4 0l3 3.5L4 7 1 3.5z' fill='%23efe6cf'/%3E%3C/svg%3E") 0 0/calc(100% / 8) 7px repeat-x}
.site-rail .rail-in{display:flex;align-items:center;justify-content:space-between;gap:16px;width:var(--wrap);margin:0 auto;padding:10px 0 17px}
a.site-brand{display:inline-flex;align-items:center;gap:9px;color:var(--pearl);text-decoration:none;font:700 27px/1 var(--display);letter-spacing:0}
a.site-brand img{width:30px;height:30px;display:block}
nav.site-nav{display:flex;align-items:center;gap:clamp(14px,2.4vw,28px);background:none;margin:0;padding:0}
nav.site-nav a{color:var(--pearl);opacity:.86;text-decoration:none;font:600 18px/1 var(--display);letter-spacing:0;padding:8px 0;border-bottom:2px solid transparent}
nav.site-nav a:hover{opacity:1;border-bottom-color:#c9b48d;text-decoration:none}
nav.site-nav a[aria-current="page"]{opacity:1;border-bottom-color:var(--pearl)}
@media (max-width:380px){nav.site-nav .nav-extra{display:none}a.site-brand{font-size:24px}a.site-brand img{width:26px;height:26px}}

/* Rodapé: o mesmo trilho, mais baixo. */
footer.site-foot{background:var(--rail);color:var(--pearl);border:0;border-top:3px solid var(--rail-edge);padding:0;margin:0}
.site-foot .foot-in{display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;width:var(--wrap);margin:0 auto;padding:18px 0;font:400 15px/1.4 var(--text)}
.site-foot .foot-in b{font:700 20px/1 var(--display);margin-right:auto}
.site-foot a{color:var(--pearl);opacity:.86;font-size:inherit;text-decoration:underline}
.site-foot a:hover{opacity:1}

/* Botões: ação principal em azul de giz; a secundária só com contorno. */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 22px;border-radius:6px;font:600 19px/1.1 var(--display);letter-spacing:0;text-decoration:none;cursor:pointer}
.btn-primary{background:var(--blue);color:#fff;border:2px solid var(--blue)}
.btn-primary:hover{background:var(--blue-ink);border-color:var(--blue-ink)}
.btn-quiet{background:transparent;color:var(--slate);border:2px solid var(--slate)}
.btn-quiet:hover{background:var(--slate);color:var(--pearl)}
@media (prefers-reduced-motion:no-preference){.btn,nav.site-nav a{transition:background-color .15s,border-color .15s,opacity .15s,color .15s}}

/* Páginas de texto (home, drills, about, 404, entradas antigas). */
.page{width:var(--wrap);margin:0 auto}
.lede{max-width:var(--measure);font-size:19px;color:var(--slate-soft);margin:0 0 26px}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.home-top{padding:clamp(28px,6vw,60px) 0 8px}
.home-top h1{font-size:clamp(40px,5.6vw,68px);max-width:22ch;margin:0 0 18px}
.home-table{display:block;width:100%;height:auto;margin:clamp(20px,4vw,40px) 0 0}
.home-ways{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:28px 48px;padding:40px 0 64px;border-top:1px solid var(--chalk-line);margin-top:40px}
.home-ways h2{font-size:30px;margin:0 0 8px}
.home-ways p{margin:0 0 10px;color:var(--slate-soft)}
.home-ways a{font-weight:600}
.doc{padding:clamp(28px,5vw,56px) 0 64px;max-width:var(--measure)}
.doc h1{font-size:clamp(38px,5.4vw,60px);margin:0 0 14px}
.doc h2{font-size:30px;margin:44px 0 10px}
.doc ol{padding-left:1.3em}
.doc li{margin:6px 0}
.doc .fine{font-size:15px;color:var(--slate-soft);margin-top:28px}
.medicao{font-size:15px;color:var(--slate-soft)}