/* Simple-Project website
   Colors: the red and white of the SOS lifebuoy on warm paper, ink-black text.
   Inter is the Simple OS system font; other systems fall back to their own UI font. */

:root{
  --bg:#f7f5f0;--paper:#fffdf9;--soft:#efebe3;--line:#ddd7cb;--text:#1d1d1b;--sub:#5f5b52;
  --red:#c8242c;--red-dark:#a01c23;--link:#1f4e8c;--org:#1565c0;--on:#ffffff;--accent:var(--red);
  --ink:#1d1d1b;--ink-text:#ece8e1;--ink-sub:#a8a297;--ink-line:#38362f;
  --note-bg:#fbf1dc;--note-line:#c98a12;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#1a1917;--paper:#211f1c;--soft:#26241f;--line:#38362f;--text:#ece8e1;--sub:#a8a297;
    --red:#e5484d;--red-dark:#c8242c;--link:#8db4ec;--org:#3b86da;--on:#ffffff;
    --ink:#121110;--note-bg:#2b261b;--note-line:#d9a53a;
  }
}
body.org{--accent:var(--org)}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:16px}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 Inter,"Segoe UI",system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--link);text-underline-offset:2px}
img,svg{display:block}
::selection{background:var(--red);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.sub{color:var(--sub)}
.small{font-size:14px}
.skip{position:absolute;left:-9999px;top:8px;z-index:20;background:var(--paper);color:var(--text);padding:8px 12px;border:2px solid var(--text)}
.skip:focus{left:8px}

/* ---------- header ---------- */
.site-head{background:var(--paper);border-bottom:4px solid var(--red)}
.site-head .wrap{display:flex;align-items:center;flex-wrap:wrap;gap:6px 28px;min-height:66px}
.logo{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;font-weight:700;letter-spacing:-.01em}
.mark{display:inline-block;font-weight:800;font-size:16px;letter-spacing:.02em;line-height:1;padding:8px 9px;background:var(--ink);color:#fff;white-space:nowrap}
.mark .s,.mark .p{color:#fff}.mark .d{color:#ff5a5f;margin:0 1px}
.site-nav{display:flex;gap:0;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.site-nav::-webkit-scrollbar{display:none}
.site-nav a{color:var(--sub);text-decoration:none;padding:21px 11px 19px;white-space:nowrap;font-size:15px;font-weight:500;border-bottom:3px solid transparent;margin-bottom:-4px}
.site-nav a:hover{color:var(--text)}
.site-nav a[aria-current]{color:var(--text);border-bottom-color:var(--text)}
@media(max-width:860px){
  .site-head .wrap{padding-top:10px}
  .site-nav{margin:0 -11px;width:calc(100% + 22px)}
  .site-nav a{padding:10px 11px 12px}
}

/* ---------- page header ---------- */
.page-head{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:44px 0 40px}
.page-head .wrap{position:relative;z-index:1}
.page-head h1{font-size:clamp(30px,4.2vw,42px);line-height:1.1;letter-spacing:-.025em;margin:0}
.page-head .meta{color:var(--sub);margin:8px 0 0}
.page-head .lead{max-width:42em;margin:14px 0 0;font-size:18px}
.page-head .title{display:flex;align-items:center;gap:18px}
.page-head .title svg{flex:none}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
/* big lifebuoy on the Simple OS page */
.page-head.os::after{content:"";position:absolute;width:380px;height:380px;right:-70px;top:50%;transform:translateY(-50%) rotate(-12deg);border-radius:50%;
  background:repeating-conic-gradient(var(--red) 0 45deg,var(--paper) 45deg 90deg);opacity:.16;
  -webkit-mask:radial-gradient(circle,transparent 0 37%,#000 37.5% 70%,transparent 70.5%);
          mask:radial-gradient(circle,transparent 0 37%,#000 37.5% 70%,transparent 70.5%)}
@media(max-width:700px){.page-head.os::after{width:220px;height:220px;right:-110px;top:30%;opacity:.1}}

/* home intro */
.hero{padding:56px 0 52px;background:var(--paper)}
.hero .wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(34px,5.4vw,56px)}
@media(max-width:860px){.hero .wrap{grid-template-columns:1fr;gap:28px}}
.tiles{display:grid;gap:0;border-top:2px solid var(--text)}
.tile{display:grid;grid-template-columns:46px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.tile h2{margin:0;font-size:20px;letter-spacing:-.01em}
.tile h2 a{color:inherit;text-decoration:none}
.tile h2 a:hover{text-decoration:underline}
.tile p{margin:3px 0 12px;color:var(--sub);font-size:15px}
.tile .links{display:flex;align-items:center;gap:16px;font-size:14px}
.tile .btn{padding:7px 14px;font-size:14px}
.ver{font-size:13px;font-weight:600;color:var(--sub);margin-left:8px;font-variant-numeric:tabular-nums}

.tile img,.page-head .title img,.dl-main img{flex:none}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:3px;background:var(--red);color:var(--on);
  font-weight:600;font-size:15px;text-decoration:none;border:2px solid var(--red)}
.btn:hover{background:var(--red-dark);border-color:var(--red-dark)}
.btn.org{background:var(--org);border-color:var(--org)}
.btn.org:hover{filter:brightness(.9)}
.btn.plain{background:transparent;color:var(--text);border-color:var(--text)}
.btn.plain:hover{background:var(--text);color:var(--bg)}
.btn .size{font-weight:400;opacity:.85}

/* ---------- layouts ---------- */
.home{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:56px;padding-top:44px;padding-bottom:72px}
.docs{display:grid;grid-template-columns:210px minmax(0,1fr);gap:56px;padding-top:44px;padding-bottom:72px}
@media(max-width:900px){.home,.docs{grid-template-columns:minmax(0,1fr);gap:30px}}

main h2{font-size:25px;line-height:1.25;letter-spacing:-.015em;margin:60px 0 16px;padding-top:14px;border-top:2px solid var(--text)}
.content > :first-child,main > h2:first-child{margin-top:0}
.content > figure:first-child + h2{margin-top:8px}
h3{font-size:18px;margin:28px 0 6px;letter-spacing:-.005em}
p{margin:0 0 14px}
ul,ol{margin:0 0 16px;padding-left:22px}
li{margin:5px 0}
ol > li::marker{font-weight:700}

/* table of contents */
.toc{position:sticky;top:24px;font-size:15px}
.toc strong{display:block;font-size:12px;color:var(--sub);text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px}
.toc ul{list-style:none;padding:0;margin:0;border-left:1px solid var(--line)}
.toc li{margin:0}
.toc a{display:block;margin-left:-1px;padding:5px 0 5px 14px;border-left:3px solid transparent;color:var(--sub);text-decoration:none}
.toc a:hover{color:var(--text)}
.toc a.active{color:var(--text);border-left-color:var(--accent);font-weight:600}
@media(max-width:900px){
  .toc{position:static;background:var(--paper);border:1px solid var(--line);padding:14px 16px}
  .toc ul{border:0;display:flex;flex-wrap:wrap;gap:4px 16px}
  .toc a{margin:0;padding:2px 0;border:0}
}

/* side boxes */
.side .box{border:1px solid var(--line);background:var(--paper);padding:18px 20px;margin-bottom:18px}
.side .box.accent{border-top:4px solid var(--red)}
.side h3{margin:0 0 10px;font-size:16px}
.side p:last-child,.side table:last-child,.side ul:last-child{margin-bottom:0}
.side .item{padding:10px 0;border-top:1px solid var(--line)}
.side .item:first-of-type{border-top:0;padding-top:0}
.side .item strong{display:block}

/* ---------- news ---------- */
.news article{display:grid;grid-template-columns:58px minmax(0,1fr);gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}
.news article:last-child{border-bottom:0}
.date{display:flex;flex-direction:column;align-items:center;justify-content:center;height:68px;border:2px solid var(--text);background:var(--paper);
  font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--sub);line-height:1.15;font-weight:600}
.date span:first-child{color:var(--red)}
.date b{font-size:24px;color:var(--text);letter-spacing:-.02em;margin:1px 0}
.news h3{margin:2px 0 6px;font-size:18px}
.news p{margin:0 0 6px}
.news a{font-size:15px}
.label{display:inline-block;font-size:11px;font-weight:700;padding:1px 7px;vertical-align:2px;margin-right:8px;letter-spacing:.04em;text-transform:uppercase;border:1.5px solid currentColor}
.label.os{color:var(--red)}
.label.org{color:var(--org)}

/* ---------- tables ---------- */
.scroll{overflow-x:auto;margin:0 0 20px;border:1px solid var(--line);background:var(--paper)}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{text-align:left;vertical-align:top;padding:11px 14px;border-bottom:1px solid var(--line)}
tr:last-child > *{border-bottom:0}
thead th{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--sub);background:var(--soft);font-weight:700}
tbody th{font-weight:600;white-space:nowrap}
td.num{white-space:nowrap;font-variant-numeric:tabular-nums}
.side table{font-size:15px}
.side td,.side th{padding:4px 0;border:0}
.side td + td{padding-left:10px}

/* ---------- screenshots ---------- */
figure{margin:0 0 26px}
.banner{width:100%;height:auto;border:1px solid var(--line)}
.frame{position:relative;aspect-ratio:16/9;display:grid;place-items:center;overflow:hidden;border:1px solid var(--line);
  background:var(--soft);color:var(--sub);font-size:14px}
.frame::after{content:"";position:absolute;left:0;right:0;bottom:0;height:9%;min-height:14px;background:var(--line)}
.frame span{position:relative;z-index:1;background:var(--paper);border:1px solid var(--line);padding:4px 11px;font-size:13px}
.shot{display:block;width:100%;height:auto;border:1px solid var(--line);background:#1e1e2e}
.gallery a:focus-visible .shot,.gallery a:hover .shot{border-color:var(--text)}
figcaption{font-size:14px;color:var(--sub);margin-top:8px}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.gallery figure{margin:0}

/* ---------- downloads ---------- */
.dl-card{border:2px solid var(--text);background:var(--paper);margin:0 0 22px}
.dl-main{display:flex;align-items:center;flex-wrap:wrap;gap:16px;padding:20px 22px}
.dl-main .file strong{display:block;font-size:17px}
.dl-main .file span{color:var(--sub);font-size:14px}
.dl-main .btn{margin-left:auto}
.dl-hash{display:flex;align-items:center;flex-wrap:wrap;gap:6px 12px;padding:12px 22px;background:var(--soft);border-top:1px solid var(--line);font-size:14px}
.dl-hash .k{color:var(--sub);font-weight:700;text-transform:uppercase;font-size:12px;letter-spacing:.07em}
.dl-hash code{background:none;border:0;padding:0;word-break:break-all;flex:1 1 300px}
@media(max-width:560px){.dl-main .btn{margin-left:0;width:100%;justify-content:center}}

/* ---------- code, notes, misc ---------- */
code,kbd,pre{font-family:"Cascadia Mono",Consolas,ui-monospace,monospace}
code{font-size:.88em;background:var(--soft);border:1px solid var(--line);padding:0 5px;overflow-wrap:anywhere}
pre{font-size:14px;line-height:1.55;background:var(--ink);color:#ece8e1;padding:14px 16px;overflow-x:auto;margin:0}
.codeblock{position:relative;margin:0 0 18px}
.codeblock pre{padding-right:76px}
.copy{font:600 12.5px Inter,"Segoe UI",system-ui,sans-serif;padding:4px 10px;border:1px solid var(--text);background:var(--paper);color:var(--text);cursor:pointer}
.copy:hover{background:var(--text);color:var(--bg)}
.codeblock .copy{position:absolute;top:9px;right:9px;background:transparent;color:#ece8e1;border-color:#6b675e}
.codeblock .copy:hover{background:#ece8e1;color:#1d1d1b}
kbd{font-size:13px;border:1px solid var(--line);border-bottom-width:2px;border-radius:3px;padding:0 6px;background:var(--paper)}
.note{background:var(--note-bg);border-left:4px solid var(--note-line);padding:12px 16px;margin:0 0 18px}
.note p:last-child{margin:0}
.tags{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.tags li{margin:0;padding:4px 12px;border:1px solid var(--line);background:var(--paper);font-size:15px}
.faq h3{margin-top:24px}
.checklist{list-style:none;padding:0}
.checklist li{position:relative;padding-left:28px}
.checklist li::before{content:"";position:absolute;left:2px;top:6px;width:13px;height:13px;border:2px solid var(--text)}
.checklist li.done::before{background:var(--text);box-shadow:inset 0 0 0 2px var(--paper)}
.pill{display:inline-block;font-size:11px;font-weight:700;padding:0 8px;border:1.5px solid var(--sub);color:var(--sub);vertical-align:5px;margin-left:10px;line-height:20px;letter-spacing:.05em;text-transform:uppercase}
.pill.next{border-color:var(--red);color:var(--red)}
.when{color:var(--sub);margin:-4px 0 14px}
.notfound{padding:80px 20px 110px}

/* ---------- footer ---------- */
.site-foot{background:var(--ink);color:var(--ink-sub);font-size:14px;padding:42px 0 28px;border-top:4px solid var(--red)}
.site-foot .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
@media(max-width:760px){.site-foot .cols{grid-template-columns:1fr 1fr}.site-foot .cols > :first-child{grid-column:1/-1}}
.site-foot strong{color:#fff;font-weight:600}
.site-foot .mark{margin-bottom:12px;border:1px solid var(--ink-line)}
.site-foot ul{list-style:none;padding:0;margin:8px 0 0}
.site-foot li{margin:5px 0}
.site-foot a{color:var(--ink-sub);text-decoration:none}
.site-foot a:hover{color:#fff;text-decoration:underline}
.site-foot .legal{border-top:1px solid var(--ink-line);margin:30px 0 0;padding-top:18px;font-size:13px}