/* ZPTH — zpth.github.io
   Self-hosted JetBrains Mono, no CDNs, no analytics: outside the Reels
   section the site makes no third-party requests, same as the app. */

@font-face{
  font-family:'JetBrains Mono'; font-style:normal; font-weight:400; font-display:swap;
  src:url('fonts/JetBrainsMono-Regular.woff2') format('woff2');
}
@font-face{
  font-family:'JetBrains Mono'; font-style:normal; font-weight:500; font-display:swap;
  src:url('fonts/JetBrainsMono-Medium.woff2') format('woff2');
}
@font-face{
  font-family:'JetBrains Mono'; font-style:normal; font-weight:600; font-display:swap;
  src:url('fonts/JetBrainsMono-SemiBold.woff2') format('woff2');
}
@font-face{
  font-family:'JetBrains Mono'; font-style:normal; font-weight:700; font-display:swap;
  src:url('fonts/JetBrainsMono-Bold.woff2') format('woff2');
}

:root{
  /* dark, like the app */
  --bg:#08080a;
  --ink:#f0ede6;
  --muted:#8e8a81;
  --subtle:#57544e;
  --line:rgba(240,237,230,.13);
  --card:#111114;
  --frame:#222228;
  --accent:#ffd23f;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --sans:var(--mono);
  --pad:clamp(20px,3.2vw,52px);
  /* phone height, then width derived from it — never rely on aspect-ratio for
     the cross axis of a flex item, it loses to fit-content */
  --ph:min(calc(100dvh - 2*var(--pad) - 58px),780px);
  --pw:calc(var(--ph) * 390 / 844);
}
html{color-scheme:dark}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--ink);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overscroll-behavior:none;
}
a{color:inherit}
img{max-width:100%;display:block}
::selection{background:var(--accent);color:#000}

/* ══════════════════════════════════════════════════════════════════ shell */
.shell{
  height:100dvh; overflow:hidden;
  display:grid; grid-template-columns:21% 54% 25%;
  padding:var(--pad) clamp(18px,2.8vw,44px);
  gap:clamp(8px,1.6vw,28px);
}

/* ═══════════════════════════════════════════════════════════════════ rail */
.rail{display:flex;flex-direction:column;justify-content:space-between;padding-right:12px;min-width:0}
.brand{
  font-family:var(--mono); font-size:clamp(19px,1.5vw,23px); font-weight:600;
  letter-spacing:.16em; margin:0 0 6px; line-height:1;
}
.brand-sub{font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:.09em;margin:0 0 18px}

.ticks{display:flex;gap:6px;align-items:center}
.ticks button{
  width:7px;height:2px;border:0;padding:0;border-radius:1px;cursor:pointer;
  background:var(--subtle); transition:width .35s ease,background .35s ease;
}
.ticks button[aria-current="true"]{width:22px;background:var(--ink)}

.rail-titles{flex:1;position:relative;min-height:0}
.rt{
  position:absolute;top:50%;left:0;right:8px;
  transform:translateY(calc(-50% + 12px)); opacity:0; pointer-events:none;
  transition:opacity .5s ease, transform .5s ease;
}
.rt.on{opacity:1;transform:translateY(-50%);pointer-events:auto}
.rt-a,.rt-b{margin:0;font-size:clamp(21px,2.1vw,31px);font-weight:600;line-height:1.1;letter-spacing:-.02em}
.rt-b{color:var(--subtle)}

.rail-foot{font-family:var(--mono);font-size:10px;color:var(--subtle);letter-spacing:.06em;margin:0}

/* ══════════════════════════════════════════════════════════════════ stage */
.stage{display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;min-width:0}

.phone{
  position:relative;flex:0 0 auto;
  height:var(--ph); width:min(var(--pw),100%);
  background:var(--frame); border-radius:44px; padding:9px;
  box-shadow:0 30px 70px -30px rgba(0,0,0,.55), inset 0 0 0 1px rgba(255,255,255,.10);
}
.screen{
  width:100%;height:100%;border-radius:36px;overflow:hidden;background:#000;
  display:flex;flex-direction:column;color:#fff;min-width:0;
}

.statusbar{
  flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;
  padding:9px 26px 5px;font-family:var(--mono);font-size:12px;font-weight:600;
}
.sb-dot{width:6px;height:6px;border-radius:50%;background:#3ad07a}
.sb-right{display:flex;align-items:center;gap:5px}
.sb-right svg{fill:currentColor}

.viewport{position:relative;width:100%;aspect-ratio:3/4;background:#000;flex:0 0 auto;overflow:hidden}
.viewport canvas,.viewport .still{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.viewport .still[hidden]{display:none}

.vp-overlay{
  position:absolute;left:10px;top:10px;display:flex;align-items:center;gap:7px;
  padding:5px 10px;border-radius:999px;background:rgba(0,0,0,.55);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  font-family:var(--mono);font-size:10px;letter-spacing:.06em;
}
.vp-overlay[hidden]{display:none}
.ndi-dot{width:6px;height:6px;border-radius:50%;background:#ff4a4a;animation:blink 1.6s ease-in-out infinite}
.ndi-name{font-weight:700}
.ndi-tag{color:rgba(255,255,255,.6)}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}

.vp-note{
  position:absolute;right:10px;bottom:10px;font-family:var(--mono);font-size:9px;
  letter-spacing:.07em;color:rgba(255,255,255,.55);
  background:rgba(0,0,0,.4);padding:4px 8px;border-radius:999px;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.vp-note[hidden]{display:none}

.chrome{flex:1 1 auto;display:flex;flex-direction:column;justify-content:space-evenly;padding:10px 12px 14px;gap:8px;min-height:0}

.strip{
  display:flex;gap:2px;overflow-x:auto;min-width:0;width:100%;scroll-snap-type:x mandatory;
  background:rgba(255,255,255,.055);border-radius:999px;padding:3px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.strip::-webkit-scrollbar{display:none}
.strip button{
  flex:0 0 auto;scroll-snap-align:center;border:0;cursor:pointer;background:transparent;
  color:rgba(255,255,255,.55);font-family:var(--mono);font-size:11px;letter-spacing:.01em;
  padding:7px 13px;border-radius:999px;white-space:nowrap;transition:background .25s,color .25s;
}
.strip button:hover{color:#fff}
.strip button[aria-selected="true"]{background:#fff;color:#000;font-weight:600}

/* the App Store preview, filling the whole phone screen */
.filmstrip{
  position:absolute;inset:0;z-index:3;
  width:100%;height:100%;object-fit:cover;background:#000;display:block;
}
.filmstrip[hidden]{display:none}

/* Instagram reels, shown inside the phone. The iframe is only created when the
   Reels section is opened, so nothing reaches instagram.com before that. */
.reels{position:absolute;inset:0;z-index:4;background:#000;display:flex;flex-direction:column}
.reels[hidden]{display:none}
.reel-tabs{display:flex;gap:3px;padding:12px 10px 8px;flex:0 0 auto}
.reel-tabs button{
  flex:1;min-width:0;border:0;cursor:pointer;background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.62);font-family:var(--mono);font-size:9.5px;
  padding:8px 4px;border-radius:999px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:background .25s,color .25s;
}
.reel-tabs button:hover{color:#fff}
.reel-tabs button[aria-selected="true"]{background:#fff;color:#000;font-weight:600}
.reel-frame{flex:1 1 auto;position:relative;background:#000;overflow:hidden}
.reel-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:#000}
.reel-load{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;background:#000;border:0;color:#fff;cursor:pointer;
  font-family:var(--mono);font-size:11px;padding:24px;text-align:center;
}
.reel-play{
  width:54px;height:54px;border-radius:50%;background:rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:center;font-size:15px;padding-left:3px;
}
.reel-load small{color:rgba(255,255,255,.45);font-size:9.5px;letter-spacing:.04em}

.row{display:flex;background:rgba(255,255,255,.055);border-radius:999px;padding:3px}
.row .pill{
  flex:1;text-align:center;font-family:var(--mono);font-size:11px;
  color:rgba(255,255,255,.62);padding:7px 4px;border-radius:999px;
}
.row .pill.on{background:rgba(255,255,255,.10);color:var(--accent)}

.keys{background:none;justify-content:center;align-items:center;gap:26px;padding:2px 0}
.key{display:flex;align-items:center;justify-content:center;color:#fff}
.key.sm{width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.10)}
.key.shutter{width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.10)}
.key.shutter i{width:34px;height:34px;border-radius:50%;background:#ff4438;display:block}

.nudge{
  margin-top:16px;width:34px;height:34px;border-radius:50%;
  border:1px solid var(--line);background:transparent;color:var(--muted);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:color .25s,border-color .25s,transform .25s;
}
.nudge:hover{color:var(--ink);border-color:var(--ink);transform:translateY(2px)}

/* ══════════════════════════════════════════════════════════════════ panel */
.panel{position:relative;min-width:0}
.panel-scroll{position:relative;height:100%}
.pi{
  position:absolute;top:50%;left:0;right:0;
  transform:translateY(calc(-50% + 14px));opacity:0;pointer-events:none;
  transition:opacity .5s ease,transform .5s ease;
  max-height:100%;overflow-y:auto;padding-right:6px;
  scrollbar-width:thin;
}
.pi.on{opacity:1;transform:translateY(-50%);pointer-events:auto}
.pi::-webkit-scrollbar{width:3px}
.pi::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}

.eyebrow{font-family:var(--mono);font-size:10px;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);margin:0 0 12px}
.lead{font-size:clamp(15px,1.25vw,18px);font-weight:600;line-height:1.32;letter-spacing:-.01em;margin:0 0 12px}
.body{font-size:13.5px;line-height:1.55;color:var(--muted);margin:0 0 20px;max-width:34ch}
.fine{font-size:11px;line-height:1.55;color:var(--subtle);margin:18px 0 0;max-width:38ch}
.fine.note{margin-top:8px;color:var(--muted);opacity:.8}

.blk{margin:0 0 20px}
.lbl{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.val{font-size:13.5px;line-height:1.5;color:var(--ink);margin:0 0 4px;max-width:34ch}
.val b{font-family:var(--mono);font-weight:700;font-size:12.5px}
.val a{text-decoration:none;border-bottom:1px solid var(--line)}
.val a:hover{border-color:var(--ink)}

.cta{
  display:inline-block;font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;
  text-decoration:none;padding:11px 16px;border-radius:999px;
  background:var(--ink);color:var(--bg);margin:2px 0 20px;transition:opacity .2s;
}
.cta:hover{opacity:.82}
.cta.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.cta.ghost:hover{border-color:var(--ink);opacity:1}

.modegrid{display:flex;flex-wrap:wrap;gap:4px;max-width:100%}
.modegrid button{
  border:1px solid var(--line);background:transparent;color:var(--muted);cursor:pointer;
  font-family:var(--mono);font-size:10.5px;padding:5px 8px;border-radius:999px;
  transition:color .2s,border-color .2s,background .2s;
}
.modegrid button:hover{color:var(--ink);border-color:var(--ink)}
.modegrid button[aria-current="true"]{background:var(--accent);border-color:var(--accent);color:#111}

.realshot{margin:0 0 18px}
.realshot img{border-radius:9px;border:1px solid var(--line)}
.realshot figcaption{font-family:var(--mono);font-size:9.5px;letter-spacing:.07em;color:var(--subtle);margin-top:6px;text-transform:uppercase}
.realshot[hidden]{display:none}

.sheet-grip{display:none}

/* ═══════════════════════════════════════════════ reference (last section) */
.docs{
  grid-column:2 / span 2; min-width:0;
  display:flex; flex-direction:column; height:100%; overflow:hidden;
  padding-right:clamp(4px,1.5vw,24px);
}
.docs-foot{
  flex:0 0 auto;font-size:11px;line-height:1.55;color:var(--subtle);
  margin:0;padding-top:14px;border-top:1px solid var(--line);max-width:80ch;
}
.docs[hidden]{display:none}
body.docs-on .stage, body.docs-on .panel{display:none}

.docs-head{flex:0 0 auto}
.docs-title{font-size:clamp(17px,1.6vw,23px);font-weight:600;letter-spacing:-.02em;margin:0 0 6px;line-height:1.2}
.docs-sub{font-size:11.5px;color:var(--muted);margin:0 0 18px}

.docs-pills{
  flex:0 0 auto; display:flex; gap:5px; overflow-x:auto; padding:2px 0 14px;
  border-bottom:1px solid var(--line); margin-bottom:16px;
  scrollbar-width:thin; -webkit-overflow-scrolling:touch;
}
.docs-pills::-webkit-scrollbar{height:5px}
.docs-pills::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.docs-pills::-webkit-scrollbar-track{background:transparent}
.docs-pills button{
  flex:0 0 auto; border:1px solid var(--line); background:transparent; color:var(--muted);
  cursor:pointer; font-family:var(--mono); font-size:11px; padding:7px 12px;
  border-radius:999px; white-space:nowrap; transition:color .2s,border-color .2s,background .2s;
}
.docs-pills button:hover{color:var(--ink);border-color:var(--ink)}
.docs-pills button[aria-selected="true"]{background:var(--accent);border-color:var(--accent);color:#111;font-weight:600}
.docs-pills .sep{flex:0 0 auto;width:1px;background:var(--line);margin:2px 6px}

.docs-body{flex:1 1 auto;overflow-y:auto;padding:0 10px 26px 0;scrollbar-width:thin}
.docs-body::-webkit-scrollbar{width:5px}
.docs-body::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}

.docs-mode{font-size:clamp(20px,2vw,28px);font-weight:600;letter-spacing:-.02em;margin:0 0 6px}
.docs-desc{font-size:13.5px;line-height:1.6;color:var(--muted);margin:0 0 12px;max-width:74ch}
.docs-note{
  font-size:12px;line-height:1.6;color:var(--muted);margin:0 0 18px;max-width:74ch;
  border-left:2px solid var(--accent);padding:2px 0 2px 12px;
}
.docs-tag{
  display:inline-block;font-size:9.5px;letter-spacing:.09em;text-transform:uppercase;
  color:#111;background:var(--accent);border-radius:999px;padding:3px 8px;margin:0 0 14px;
}
.docs-group{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);
  margin:26px 0 10px;padding-top:14px;border-top:1px solid var(--line)}
.docs-group:first-of-type{margin-top:0;padding-top:0;border-top:0}

table.docs-tbl{width:100%;border-collapse:collapse;font-size:13px;margin-bottom:8px}
.docs-tbl th{
  text-align:left;font-size:9.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);
  font-weight:400;padding:0 14px 9px 0;border-bottom:1px solid var(--line);white-space:nowrap;
}
.docs-tbl td{padding:11px 14px 11px 0;border-bottom:1px solid rgba(240,237,230,.06);vertical-align:top}
.docs-tbl tr:last-child td{border-bottom:0}
.docs-tbl .c-name{font-weight:600;white-space:nowrap;width:1%}
.docs-tbl .c-kind{color:var(--subtle);font-size:10.5px;white-space:nowrap;width:1%;text-transform:uppercase;letter-spacing:.07em}
.docs-tbl .c-range{color:var(--muted);font-size:11.5px;white-space:nowrap;width:1%}
.docs-tbl .c-desc{color:var(--muted);line-height:1.55}
.docs-tbl .opts{display:block;margin-top:5px;color:var(--subtle);font-size:11px}

@media (max-width:900px){
  .docs{
    position:fixed;inset:0;z-index:7;grid-column:auto;
    padding:calc(env(safe-area-inset-top) + 52px) 18px calc(18px + env(safe-area-inset-bottom));
    background:var(--bg);
  }
  body.docs-on .rail{background:var(--bg)}
  .docs-title{font-size:17px}
  .docs-body{padding-right:0}
  /* stack each row as a card — a 4-column table cannot work at 390px */
  .docs-tbl, .docs-tbl tbody, .docs-tbl tr, .docs-tbl td{display:block;width:auto}
  .docs-tbl thead{display:none}
  .docs-tbl tr{padding:12px 0;border-bottom:1px solid rgba(240,237,230,.08)}
  .docs-tbl td{padding:0;border:0}
  .docs-tbl .c-name{display:inline;font-size:14px}
  .docs-tbl .c-kind{display:none}
  .docs-tbl .c-range{display:inline;margin-left:8px}
  .docs-tbl .c-range.is-none{display:none}
  .docs-tbl .c-desc{display:block;margin-top:5px}
}

/* ═════════════════════════════════════════════════════════ mobile / narrow */
@media (max-width:900px){
  .shell{
    display:block;height:100dvh;padding:0;gap:0;
    padding-top:env(safe-area-inset-top);
  }

  /* rail → compact top bar */
  .rail{
    position:fixed;top:0;left:0;right:0;z-index:5;
    flex-direction:row;align-items:center;justify-content:space-between;
    padding:calc(env(safe-area-inset-top) + 12px) 18px 12px;
    background:linear-gradient(var(--bg) 62%,rgba(0,0,0,0));
  }
  .brand{font-size:15px;margin:0}
  .brand-sub,.rail-foot{display:none}
  .rail-head{display:flex;align-items:center;gap:14px}
  .ticks{gap:5px}
  .ticks button{height:3px;border-radius:2px}
  .ticks button[aria-current="true"]{width:16px}
  .rail-titles{position:static;flex:0 0 auto;min-height:0;height:auto;text-align:right}
  .rt{position:absolute;right:18px;top:calc(env(safe-area-inset-top) + 12px);left:auto;transform:translateY(6px)}
  .rt.on{transform:translateY(0)}
  .rt-a{display:none}
  .rt-b{font-size:13px;color:var(--muted);font-weight:500}

  /* stage fills the screen */
  .stage{
    position:fixed;inset:0;
    padding:calc(env(safe-area-inset-top) + 46px) 0 calc(78px + env(safe-area-inset-bottom));
    justify-content:flex-start;
  }
  .phone{
    height:100%;width:100%;max-height:none;
    border-radius:0;padding:0 12px;background:transparent;box-shadow:none;
  }
  /* keep the app's own dark chrome on mobile — it is the app, not the page */
  .screen{
    border-radius:20px;background:#000;height:100%;
    box-shadow:0 18px 44px -22px rgba(0,0,0,.55);
  }
  .statusbar{display:none}
  .viewport{border-radius:0;margin:0;width:100%}
  .chrome{padding:12px 12px 16px}
  .nudge{display:none}

  /* panel → bottom sheet */
  .panel{
    position:fixed;left:0;right:0;bottom:0;z-index:6;
    background:var(--card);
    border-top-left-radius:22px;border-top-right-radius:22px;
    box-shadow:0 -14px 40px -18px rgba(0,0,0,.45);
    border-top:1px solid var(--line);
    height:min(76dvh,620px);
    transform:translateY(calc(100% - 66px - env(safe-area-inset-bottom)));
    transition:transform .34s cubic-bezier(.32,.72,0,1);
  }
  .panel.open{transform:translateY(0)}
  .sheet-grip{
    display:flex;align-items:center;justify-content:center;
    height:56px;cursor:pointer;color:var(--muted);
  }
  .sheet-grip svg{transition:transform .34s cubic-bezier(.32,.72,0,1)}
  .panel.open .sheet-grip svg{transform:rotate(180deg)}
  .panel-scroll{height:calc(100% - 56px);overflow:hidden;padding:0 20px calc(24px + env(safe-area-inset-bottom))}
  .pi{
    position:absolute;top:0;left:20px;right:20px;transform:translateY(10px);
    max-height:100%;overflow-y:auto;-webkit-overflow-scrolling:touch;
  }
  .pi.on{transform:translateY(0)}
  .body,.val,.fine{max-width:none}
  .lead{font-size:17px}
}

@media (max-width:900px) and (orientation:landscape){
  .panel{height:88dvh}
  .stage{padding-bottom:70px}
}

/* keep the tallest phones from clipping the app chrome on short screens */
@media (min-width:901px) and (max-height:640px){
  .phone{height:calc(100dvh - 2*var(--pad))}
  .rt-a,.rt-b{font-size:19px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* ═══════════════════════════════════════════════ privacy / document pages */
.doc-body{overscroll-behavior:auto}
.doc{max-width:70ch;margin:0 auto;padding:clamp(26px,5vw,64px) 22px clamp(60px,10vw,120px)}
.doc-back{
  display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.09em;
  color:var(--muted);text-decoration:none;margin-bottom:clamp(28px,5vw,52px);
}
.doc-back:hover{color:var(--ink)}
.doc h1{font-size:clamp(26px,4.4vw,38px);font-weight:600;letter-spacing:-.025em;margin:0 0 8px;line-height:1.1}
.doc-meta{font-family:var(--mono);font-size:11px;letter-spacing:.07em;color:var(--subtle);margin:0 0 34px}
.doc-lead{font-size:clamp(15px,1.7vw,18px);line-height:1.55;margin:0 0 40px;letter-spacing:-.005em}
.doc h2{
  font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.13em;text-transform:uppercase;
  color:var(--muted);margin:38px 0 12px;padding-top:16px;border-top:1px solid var(--line);
}
.doc p,.doc li{font-size:14.5px;line-height:1.68;color:var(--ink);margin:0 0 14px}
.doc ul{padding-left:20px;margin:0 0 14px}
.doc li{margin:0 0 7px}
.doc a{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line)}
.doc a:hover{border-color:var(--ink)}
.doc hr{border:0;border-top:1px solid var(--line);margin:46px 0 22px}
.doc-foot{font-family:var(--mono);font-size:10.5px;line-height:1.7;color:var(--subtle)}