/* littleFedi website
   One stylesheet, no JavaScript anywhere on this site.
   Colours follow the littlefedi.org landing page. */

:root{
  color-scheme:light dark;

  --bg:#f8fafb;
  --text:#101418;
  --muted:#586771;
  --line:rgba(16,20,24,.10);
  --line-strong:rgba(16,20,24,.22);

  --brand:#12b8a6;
  --brand-ink:#076b64;
  --brand-ink-hover:#04524d;
  --cyan-ink:#0a6b7d;

  --panel:rgba(255,255,255,.78);
  --panel-2:rgba(255,255,255,.55);
  --code-bg:#eaf2f2;
  --code-text:#0d1d1d;
  --mark:rgba(18,184,166,.18);

  --shadow:0 24px 80px rgba(20,91,88,.14);
  --shadow-sm:0 8px 28px rgba(20,91,88,.10);

  --radius:24px;
  --radius-sm:12px;
  --radius-pill:999px;

  --maxw:74rem;
  --prose:46rem;

  --font-body:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"DejaVu Sans Mono",monospace;
}

@media (prefers-color-scheme:dark){
  :root{
    --bg:#0b1113;
    --text:#f2f7f7;
    --muted:#a3b3b8;
    --line:rgba(255,255,255,.10);
    --line-strong:rgba(255,255,255,.24);

    --brand:#20c7b7;
    --brand-ink:#3fd8c7;
    --brand-ink-hover:#7defdf;
    --cyan-ink:#4fc9e8;

    --panel:rgba(16,26,29,.74);
    --panel-2:rgba(255,255,255,.04);
    --code-bg:#0f1a1d;
    --code-text:#dcecec;
    --mark:rgba(32,199,183,.22);

    --shadow:0 24px 80px rgba(0,0,0,.38);
    --shadow-sm:0 8px 28px rgba(0,0,0,.30);
  }
}

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

html{
  min-height:100%;
  background:var(--bg);
  -webkit-text-size-adjust:100%;
  scroll-padding-top:6.5rem;
}

body{
  margin:0;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  color:var(--text);
  font-family:var(--font-body);
  font-size:1.02rem;
  line-height:1.68;
  background:
    radial-gradient(circle at 12% 4%,rgba(18,184,166,.16),transparent 30rem),
    radial-gradient(circle at 92% 78%,rgba(8,145,178,.13),transparent 32rem),
    linear-gradient(160deg,#fbfcfd,#f2f8f8);
  background-attachment:fixed;
}

@media (prefers-color-scheme:dark){
  body{
    background:
      radial-gradient(circle at 12% 4%,rgba(18,184,166,.12),transparent 30rem),
      radial-gradient(circle at 92% 78%,rgba(8,145,178,.10),transparent 32rem),
      linear-gradient(160deg,#0b1113,#10191c);
  }
}

/* ---------- shared bits ---------- */

.wrap{width:min(100% - 2.5rem,var(--maxw));margin-inline:auto}

.skip{
  position:absolute;
  left:.75rem;top:-4rem;
  z-index:50;
  padding:.7rem 1.1rem;
  border-radius:var(--radius-sm);
  background:var(--bg);
  color:var(--text);
  border:2px solid var(--brand-ink);
  font-weight:700;
  text-decoration:none;
  transition:top .15s ease;
}
.skip:focus{top:.75rem}

a{color:var(--brand-ink);text-underline-offset:.18em;text-decoration-thickness:.08em}
a:hover{color:var(--brand-ink-hover)}

:focus-visible{
  outline:3px solid var(--brand-ink);
  outline-offset:3px;
  border-radius:4px;
}

::selection{background:var(--mark)}

/* ---------- header ---------- */

.site-header{
  position:sticky;top:0;z-index:30;
  border-bottom:1px solid var(--line);
  background:var(--panel);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}

.site-header .wrap{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.75rem 1.5rem;
  padding:.85rem 0;
}

.brand{
  display:inline-flex;align-items:center;gap:.6rem;
  text-decoration:none;color:inherit;
  font-weight:850;letter-spacing:-.045em;font-size:1.4rem;
  line-height:1;
}
.brand img{width:30px;height:30px}
.brand .little{color:var(--text)}
.brand .fedi{color:var(--brand-ink)}

.site-nav{margin-left:auto}
.site-nav ul{
  display:flex;flex-wrap:wrap;gap:.15rem .35rem;
  margin:0;padding:0;list-style:none;
}
.site-nav a{
  display:block;
  padding:.42rem .7rem;
  border-radius:var(--radius-pill);
  color:var(--muted);
  text-decoration:none;
  font-size:.94rem;
  font-weight:650;
}
.site-nav a:hover{color:var(--text);background:var(--panel-2)}
.site-nav a[aria-current="page"]{
  color:var(--brand-ink);
  background:rgba(18,184,166,.12);
}

/* ---------- panels and sections ---------- */

main{flex:1 0 auto;padding:2.5rem 0 4rem}

.panel{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--panel);
  box-shadow:var(--shadow-sm);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:clamp(1.4rem,3.5vw,2.4rem);
}

.section{margin-top:3rem}
.section > h2:first-child{margin-top:0}

.hero{
  border:1px solid var(--line);
  border-radius:30px;
  background:var(--panel);
  box-shadow:var(--shadow);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  padding:clamp(2rem,5.5vw,4rem);
}

.eyebrow{
  margin:0 0 .9rem;
  color:var(--brand-ink);
  font-size:.76rem;font-weight:800;
  letter-spacing:.14em;text-transform:uppercase;
}

h1{
  margin:0;
  font-size:clamp(2.1rem,5.6vw,3.9rem);
  line-height:1.03;
  letter-spacing:-.045em;
  font-weight:850;
}
h2{
  margin:2.6rem 0 .9rem;
  font-size:clamp(1.45rem,3vw,2.05rem);
  line-height:1.18;
  letter-spacing:-.03em;
  font-weight:800;
}
h3{
  margin:2rem 0 .6rem;
  font-size:1.16rem;
  line-height:1.3;
  letter-spacing:-.015em;
  font-weight:750;
}
h4{margin:1.5rem 0 .5rem;font-size:1.02rem;font-weight:750}

.lead{
  max-width:var(--prose);
  margin:1.3rem 0 0;
  color:var(--muted);
  font-size:clamp(1.04rem,1.6vw,1.2rem);
  line-height:1.7;
}

p,ul,ol,dl{max-width:var(--prose)}
.panel > p,.panel > ul,.panel > ol{max-width:var(--prose)}

ul,ol{padding-left:1.35rem}
li{margin:.35rem 0}
li > ul,li > ol{margin-top:.35rem}

hr{
  border:0;border-top:1px solid var(--line);
  margin:2.5rem 0;
}

strong{font-weight:750}

/* ---------- buttons and pills ---------- */

.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}

.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.78rem 1.35rem;
  border-radius:var(--radius-pill);
  font-weight:700;font-size:1rem;
  text-decoration:none;
  border:1px solid transparent;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,#0b7f74,#0a6b7d);
  box-shadow:0 10px 26px rgba(11,127,116,.28);
}
.btn-primary:hover{color:#fff;background:linear-gradient(135deg,#096e64,#095b6b)}
.btn-secondary{
  color:var(--text);
  border-color:var(--line-strong);
  background:var(--panel-2);
}
.btn-secondary:hover{color:var(--text);border-color:var(--brand-ink)}

.status-pill{
  display:inline-flex;align-items:center;gap:.6rem;
  margin-top:2rem;
  padding:.6rem 1rem;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:var(--panel-2);
  color:var(--muted);
  font-size:.9rem;font-weight:650;
}
.dot{
  width:.62rem;height:.62rem;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 .32rem rgba(18,184,166,.14);
  animation:pulse 2.4s ease-in-out infinite;
  flex:none;
}
@keyframes pulse{
  0%,100%{transform:scale(1);opacity:1}
  50%{transform:scale(.8);opacity:.6}
}
@media (prefers-reduced-motion:reduce){
  .dot{animation:none}
  *{transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* ---------- card grids ---------- */

.cards{
  display:grid;
  gap:1rem;
  grid-template-columns:repeat(auto-fit,minmax(17rem,1fr));
  margin:1.5rem 0 0;
  padding:0;
  list-style:none;
  max-width:none;
}
.cards li{margin:0}
.card{
  height:100%;
  padding:1.35rem 1.4rem;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--panel-2);
}
.card h3{margin:0 0 .45rem;font-size:1.05rem}
.card p{margin:0;color:var(--muted);font-size:.96rem;max-width:none}
.card a{font-weight:650}

a.card{display:block;text-decoration:none;color:inherit}
a.card:hover{border-color:var(--brand-ink);background:rgba(18,184,166,.07)}
a.card h3{color:var(--brand-ink)}
a.card .more{display:inline-block;margin-top:.7rem;color:var(--brand-ink);font-weight:700;font-size:.93rem}

/* ---------- tables ---------- */

.table-scroll{
  overflow-x:auto;
  margin:1.3rem 0;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--panel-2);
}
table{
  border-collapse:collapse;
  width:100%;
  min-width:34rem;
  font-size:.95rem;
}
caption{
  padding:.8rem 1rem;
  text-align:left;
  color:var(--muted);
  font-size:.9rem;
  border-bottom:1px solid var(--line);
}
th,td{
  padding:.65rem .9rem;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid var(--line);
}
thead th{
  font-size:.82rem;
  letter-spacing:.05em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:750;
  white-space:nowrap;
}
thead th code{text-transform:none;letter-spacing:0}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
tbody th{font-weight:700}

/* ---------- code ---------- */

code{
  font-family:var(--font-mono);
  font-size:.9em;
  padding:.12em .38em;
  border-radius:5px;
  background:var(--code-bg);
  color:var(--code-text);
}
pre{
  margin:1.2rem 0;
  padding:1rem 1.15rem;
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--code-bg);
  color:var(--code-text);
  font-size:.9rem;
  line-height:1.6;
  max-width:none;
}
pre code{padding:0;background:none;font-size:1em}

kbd{
  font-family:var(--font-mono);
  font-size:.85em;
  padding:.1em .4em;
  border:1px solid var(--line-strong);
  border-bottom-width:2px;
  border-radius:5px;
}

/* ---------- notes ---------- */

.note{
  margin:1.5rem 0;
  padding:1.05rem 1.25rem;
  border:1px solid var(--line);
  border-left:4px solid var(--brand);
  border-radius:var(--radius-sm);
  background:var(--panel-2);
  max-width:var(--prose);
}
.note > :first-child{margin-top:0}
.note > :last-child{margin-bottom:0}
.note p{max-width:none}
.note .note-title{
  display:block;
  margin-bottom:.3rem;
  font-weight:750;
  font-size:.94rem;
  letter-spacing:.02em;
}

/* ---------- definition lists ---------- */

dl.stack{margin:1.3rem 0;max-width:var(--prose)}
dl.stack dt{font-weight:750;margin-top:1.1rem}
dl.stack dd{margin:.2rem 0 0;color:var(--muted)}

/* ---------- details / FAQ ---------- */

details{
  margin:.75rem 0;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--panel-2);
  max-width:var(--prose);
}
details summary{
  cursor:pointer;
  padding:.9rem 1.15rem;
  font-weight:700;
  list-style-position:inside;
}
details summary:hover{color:var(--brand-ink)}
details summary::marker{color:var(--brand-ink)}
details[open] summary{border-bottom:1px solid var(--line)}
details .details-body{padding:.35rem 1.15rem 1rem}
details .details-body > :first-child{margin-top:.75rem}
details .details-body > :last-child{margin-bottom:0}

/* ---------- page intro ---------- */

.page-head{
  padding-bottom:.5rem;
  border-bottom:1px solid var(--line);
  margin-bottom:2.2rem;
}
.page-head h1{font-size:clamp(1.9rem,4.4vw,3rem)}
.page-head .lead{margin-bottom:1.6rem}

/* ---------- table of contents ---------- */

.toc{
  margin:0 0 2.2rem;
  padding:1.1rem 1.3rem;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--panel-2);
}
.toc h2{
  margin:0 0 .5rem;
  font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);font-weight:800;
}
.toc ul{
  margin:0;padding:0;list-style:none;
  columns:2;column-gap:2rem;
  max-width:none;
}
.toc li{margin:.22rem 0;break-inside:avoid}
.toc a{font-weight:650;font-size:.96rem}
@media (max-width:44rem){.toc ul{columns:1}}

/* ---------- diagram ---------- */

figure{margin:1.8rem 0;max-width:none}
figure svg{
  display:block;
  width:100%;
  max-width:44rem;
  height:auto;
  margin-inline:auto;
}
figcaption{
  margin-top:.7rem;
  color:var(--muted);
  font-size:.92rem;
  max-width:var(--prose);
}

.diagram .box{fill:var(--panel-2);stroke:var(--line-strong);stroke-width:1.5}
.diagram .box-accent{fill:rgba(18,184,166,.10);stroke:var(--brand-ink);stroke-width:1.5}
.diagram text{fill:var(--text);font-family:var(--font-body);font-size:14px;font-weight:700}
.diagram .sub{fill:var(--muted);font-size:12px;font-weight:500}
.diagram .link{stroke:var(--brand-ink);stroke-width:2;fill:none}
.diagram .dashed{stroke-dasharray:6 5}
.diagram .arrow{fill:var(--brand-ink)}

/* ---------- footer ---------- */

.site-footer{
  flex:none;
  border-top:1px solid var(--line);
  background:var(--panel-2);
  padding:2.5rem 0;
  color:var(--muted);
  font-size:.94rem;
}
.footer-grid{
  display:grid;
  gap:1.5rem 2.5rem;
  grid-template-columns:repeat(auto-fit,minmax(12rem,1fr));
}
.site-footer h2{
  margin:0 0 .6rem;
  font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--text);font-weight:800;
}
.site-footer ul{margin:0;padding:0;list-style:none;max-width:none}
.site-footer li{margin:.3rem 0}
.site-footer p{max-width:34rem}
.colophon{
  margin-top:2.2rem;
  padding-top:1.4rem;
  border-top:1px solid var(--line);
  font-size:.9rem;
}
.colophon p{margin:.3rem 0}

/* ---------- utilities ---------- */

.muted{color:var(--muted)}
.small{font-size:.92rem}
.nowrap{white-space:nowrap}
.stack-tight > * + *{margin-top:.4rem}
.center{text-align:center}

.tag-row{
  display:flex;flex-wrap:wrap;gap:.5rem;
  margin:1.2rem 0 0;padding:0;list-style:none;max-width:none;
}
.tag-row li{margin:0}
.tag{
  display:inline-block;
  padding:.32rem .8rem;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:var(--panel-2);
  font-size:.88rem;font-weight:650;
}

@media (max-width:34rem){
  .site-header .wrap{padding:.7rem 0}
  .brand{font-size:1.25rem}
  .site-nav{margin-left:0;width:100%}
  .btn{width:100%;justify-content:center}
}

/* Firefox on mobile repaints fixed, blurred layers while scrolling. */
@media (max-width:44rem){
  body{background-attachment:scroll}
  .site-header,.panel,.hero{
    backdrop-filter:none;
    -webkit-backdrop-filter:none;
  }
}

@media print{
  .site-header,.site-nav,.skip{display:none}
  body{background:#fff;color:#000}
  .panel,.hero{box-shadow:none;border:1px solid #ccc;background:#fff}
}