/* parseh.io -- Parseh's colours and faces, as lib/parseh.css in the Parseh
   repository names them: the accent (Viva Magenta) and the sepia paper. */
:root{
  --accent:#be3455;
  --accentlt:#ce5b78;
  --on:#ffffff;        /* text on the accent */
  --bg:#ece5d4;        /* sepia: the ground */
  --card:#f8f3e6;      /* sepia: the sheet */
  --ink:#3c3425;
  --dim:#6f6653;
  --faint:#9d9078;
  --rule:#d8cfba;
  --bar:56px;          /* the height the curtain keeps once it is up */
  --p:0;               /* how far up the curtain is, 0..1 (site.js) */
}

@font-face{font-family:'Noto Nastaliq Urdu';
  src:url(fonts/NotoNastaliqUrdu.woff2) format('woff2');font-display:block}
@font-face{font-family:'TeX Gyre Chorus';
  src:url(fonts/texgyrechorus-mediumitalic.otf) format('opentype');font-display:swap}

*{box-sizing:border-box}
html{scroll-padding-top:var(--bar);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,system-ui,sans-serif;
  font-size:16px;line-height:1.5}
a{color:var(--accent)}

/* ── the curtain ─────────────────────────────────────────────────────────
   One screen of accent.  It is an ordinary block that scrolls away with the
   page, and STICKS when only its last --bar pixels are left: that strip is
   the top bar.  Nothing here needs a script; site.js only tells the CSS how
   far up the curtain is (--p), so the words fade out and the bar fades in. */
.curtain{position:sticky;top:calc(var(--bar) - 100vh);height:100vh;z-index:10;
  background:var(--accent);color:var(--on);overflow:hidden}
@supports (height:100svh){
  .curtain{top:calc(var(--bar) - 100svh);height:100svh}
}

.hero{position:absolute;inset:0 0 var(--bar) 0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;
  padding:0 20px 5vh;opacity:calc(1 - var(--p) * 1.7)}
.hero h1{margin:0;font-weight:400;display:flex;flex-direction:column;align-items:center}
/* the name is Persian, whatever is being learned */
.hero .fa{font-family:'Noto Nastaliq Urdu',serif;direction:rtl;
  font-size:clamp(84px,min(24vw,26vh),230px);line-height:1.75;
  margin-top:-.38em}
.hero .lat{font-family:'TeX Gyre Chorus','Apple Chancery','URW Chancery L',cursive;
  font-size:clamp(34px,min(7vw,7.5vh),68px);line-height:1;letter-spacing:.01em;
  margin-top:.42em}
.hero .tag span{white-space:nowrap}
.hero .tag{margin:clamp(14px,2.6vh,28px) 0 0;font-size:clamp(15px,min(2.6vw,2.6vh),21px);
  letter-spacing:.14em;text-transform:uppercase;font-weight:500;opacity:.94}

.dl{margin-top:clamp(30px,8.5vh,96px);display:inline-flex;align-items:center;gap:14px;
  padding:13px 26px 13px 20px;border-radius:999px;background:var(--on);color:var(--accent);
  text-decoration:none;text-align:left;box-shadow:0 6px 22px rgba(60,10,25,.25);
  transition:transform .15s ease,box-shadow .15s ease}
.dl:hover{transform:translateY(-1px);box-shadow:0 9px 26px rgba(60,10,25,.32)}
.dl:focus-visible,.bar a:focus-visible,.bar button:focus-visible,.more:focus-visible{
  outline:3px solid var(--on);outline-offset:3px}
.dl svg{width:26px;height:26px;flex:none}
.dl b{display:block;font-size:17px;font-weight:650;line-height:1.25}
.dl small{display:block;font-size:13px;line-height:1.3;color:var(--dim)}
/* on a phone or a tablet there is nothing to download: a notice, not a button */
.dl.phone{background:none;color:var(--on);border:1.5px solid rgba(255,255,255,.75);
  box-shadow:none;max-width:340px;border-radius:22px;cursor:default}
.dl.phone:hover{transform:none;box-shadow:none}
.dl.phone small{color:var(--on);opacity:.9}
.dl[hidden]{display:none}

.alpha{margin:14px 0 0;font-size:13.5px;opacity:.88;max-width:340px}

/* the hint that there is something under the curtain */
.more{position:absolute;left:50%;bottom:calc(var(--bar) + 6px);transform:translateX(-50%);
  width:44px;height:44px;border:0;background:none;color:var(--on);cursor:pointer;
  opacity:calc(1 - var(--p) * 4);padding:6px}
.more svg{width:100%;height:100%;animation:nod 2.2s ease-in-out infinite}
@keyframes nod{0%,100%{transform:translateY(-6px)}50%{transform:translateY(5px)}}

/* ── the bar: the curtain's last strip, and the head of every other page ── */
.bar{position:absolute;left:0;right:0;bottom:0;height:var(--bar);
  display:flex;align-items:center;gap:6px;padding:0 max(14px,env(safe-area-inset-right)) 0 max(14px,env(safe-area-inset-left));
  color:var(--on)}
.js .curtain .bar{opacity:calc((var(--p) - .55) / .45);visibility:hidden}
.js .curtain.up .bar,.js .curtain.rising .bar{visibility:visible}
.bar .home{display:inline-flex;align-items:center;gap:10px;margin-right:auto;
  color:inherit;text-decoration:none}
.bar .glyph{font-family:'Noto Nastaliq Urdu',serif;font-size:15px;line-height:1;
  width:34px;height:34px;border-radius:50%;background:var(--on);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;flex:none}
/* a nastaliq line box is far taller than the letter: lift the ink to the middle */
.bar .glyph i{font-style:normal;display:block;transform:translateY(-.62em)}
.bar .name{font-family:'TeX Gyre Chorus','Apple Chancery',cursive;font-size:27px;line-height:1}
.bar nav{display:flex;align-items:center;gap:2px;flex-wrap:nowrap;white-space:nowrap}
.bar nav a{color:inherit;text-decoration:none;font-size:15px;font-weight:550;
  padding:8px 12px;border-radius:999px}
.bar nav a:hover,.bar nav a[aria-current]{background:rgba(255,255,255,.16)}
.bar .lang{width:34px;height:34px;margin-left:8px;padding:0;border-radius:50%;
  border:2px solid var(--on);background:none;overflow:hidden;cursor:default;flex:none}
.bar .lang svg{display:block;width:100%;height:100%}

/* a page with no curtain: the bar alone, at the top */
.bar.alone{position:sticky;top:0;bottom:auto;z-index:10;background:var(--accent)}

/* ── under the curtain: the sepia paper ───────────────────────────────── */
main{min-height:calc(100vh - var(--bar));
  display:flex;flex-direction:column}
/* the LARGEST screen (a phone's, once its address bar has slid away): with
   less than that under the curtain the page ends before the curtain is up,
   and the bar is left taller than its one line */
@supports (height:100lvh){main{min-height:calc(100lvh - var(--bar))}}
.paper{flex:1;display:flex;align-items:center;justify-content:center;
  padding:48px 20px;text-align:center}
.paper p{margin:0;font-family:'TeX Gyre Pagella','Palatino Linotype',Palatino,'Book Antiqua',Georgia,serif;
  font-size:clamp(22px,4vw,34px);color:var(--dim)}
.sheet{width:100%;max-width:760px;margin:0 auto;padding:36px 20px 64px}
.sheet h1{font-family:'TeX Gyre Pagella','Palatino Linotype',Palatino,'Book Antiqua',Georgia,serif;
  font-weight:400;font-size:34px;margin:0 0 6px}
.sheet .sub{color:var(--dim);margin:0 0 26px}
.releases{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.releases li{background:var(--card);border:1px solid var(--rule);border-radius:12px;
  padding:14px 18px;display:flex;align-items:center;gap:8px 18px;flex-wrap:wrap}
.releases .v{font-size:19px;font-weight:650}
.releases .newest{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:var(--on);background:var(--accent);border-radius:999px;padding:2px 9px}
.releases .when{color:var(--dim);font-size:14px;margin-right:auto}
.releases a{font-size:15px}
.releases a.zip{font-weight:650;text-decoration:none;color:var(--on);background:var(--accent);
  border-radius:999px;padding:7px 15px}
.releases a.zip:hover{background:var(--accentlt)}
.note{color:var(--dim);font-size:15px}
.examples{list-style:none;margin:0 0 26px;padding:0;display:grid;gap:14px}
.examples a.ex{display:block;background:var(--card);border:1px solid var(--rule);border-radius:12px;
  padding:18px 20px;text-decoration:none;color:var(--ink);transition:border-color .15s ease}
.examples a.ex:hover{border-color:var(--accent)}
.examples b{display:block;font-size:19px;font-weight:650;margin-bottom:4px}
.examples span{display:block;color:var(--dim);font-size:15px}
.examples i{display:inline-block;margin-top:12px;font-style:normal;font-weight:650;font-size:15px;
  color:var(--on);background:var(--accent);border-radius:999px;padding:6px 15px}
/* an example: the bar, one line saying where one is, and the exported page
   itself in a frame that takes the rest of the screen */
body.framed{height:100vh;display:flex;flex-direction:column;overflow:hidden}
@supports (height:100dvh){body.framed{height:100dvh}}
body.framed .bar.alone{position:static;flex:none}
.crumb{flex:none;margin:0;padding:7px 16px;font-size:14px;color:var(--dim);background:var(--card);
  border-bottom:1px solid var(--rule);display:flex;gap:8px;align-items:baseline;white-space:nowrap}
.crumb b{color:var(--ink);font-weight:600;overflow:hidden;text-overflow:ellipsis}
.crumb .alone{margin-left:auto}
iframe.deck{flex:1;min-height:0;width:100%;border:0;background:var(--card)}
.credit{flex:none;margin:0;padding:6px 16px;font-size:12px;line-height:1.35;color:var(--dim);
  background:var(--card);border-top:1px solid var(--rule)}
.onphone{background:var(--card);border:1px solid var(--rule);border-left:4px solid var(--accent);
  border-radius:8px;padding:12px 16px;margin:0 0 18px}
footer{padding:18px 20px 26px;text-align:center;font-size:13px;color:var(--faint)}
footer a{color:var(--dim)}

@media (max-width:520px){
  :root{--bar:44px}
  .bar{gap:2px;padding:0 max(10px,env(safe-area-inset-right)) 0 max(10px,env(safe-area-inset-left))}
  .bar .name{display:none}
  .bar .glyph{width:28px;height:28px;font-size:12.5px}
  .bar nav{gap:0}
  .bar nav a{padding:5px 8px;font-size:14px}
  .bar .lang{width:26px;height:26px;margin-left:4px;border-width:1.5px}
  /* too narrow for one line: three, with the & alone in the middle */
  .hero .tag span{display:block}
  .hero .tag{line-height:1.55}
}
/* a low, wide screen (a phone on its side): keep the button on the screen */
@media (max-height:520px){
  .hero{padding-bottom:22px}
  .hero .fa{font-size:clamp(60px,21vh,120px)}
  .hero .tag{margin-top:8px}
  .dl.phone{max-width:560px;border-radius:16px}
  .dl small{font-size:12.5px}
  .alpha{margin-top:6px;font-size:12.5px;max-width:none}
  .dl{margin-top:12px;padding:7px 18px 7px 14px}
  .more{width:30px;height:30px;bottom:calc(var(--bar) - 14px)}
}
@media (prefers-reduced-motion:reduce){
  .more svg{animation:none}
  .dl{transition:none}
}